1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
3 
4 /* ethtool support for i40e */
5 
6 #include "i40e.h"
7 #include "i40e_diag.h"
8 #include "i40e_txrx_common.h"
9 
10 /* ethtool statistics helpers */
11 
12 /**
13  * struct i40e_stats - definition for an ethtool statistic
14  * @stat_string: statistic name to display in ethtool -S output
15  * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64)
16  * @stat_offset: offsetof() the stat from a base pointer
17  *
18  * This structure defines a statistic to be added to the ethtool stats buffer.
19  * It defines a statistic as offset from a common base pointer. Stats should
20  * be defined in constant arrays using the I40E_STAT macro, with every element
21  * of the array using the same _type for calculating the sizeof_stat and
22  * stat_offset.
23  *
24  * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or
25  * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from
26  * the i40e_add_ethtool_stat() helper function.
27  *
28  * The @stat_string is interpreted as a format string, allowing formatted
29  * values to be inserted while looping over multiple structures for a given
30  * statistics array. Thus, every statistic string in an array should have the
31  * same type and number of format specifiers, to be formatted by variadic
32  * arguments to the i40e_add_stat_string() helper function.
33  **/
34 struct i40e_stats {
35 	char stat_string[ETH_GSTRING_LEN];
36 	int sizeof_stat;
37 	int stat_offset;
38 };
39 
40 /* Helper macro to define an i40e_stat structure with proper size and type.
41  * Use this when defining constant statistics arrays. Note that @_type expects
42  * only a type name and is used multiple times.
43  */
44 #define I40E_STAT(_type, _name, _stat) { \
45 	.stat_string = _name, \
46 	.sizeof_stat = sizeof_field(_type, _stat), \
47 	.stat_offset = offsetof(_type, _stat) \
48 }
49 
50 /* Helper macro for defining some statistics directly copied from the netdev
51  * stats structure.
52  */
53 #define I40E_NETDEV_STAT(_net_stat) \
54 	I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat)
55 
56 /* Helper macro for defining some statistics related to queues */
57 #define I40E_QUEUE_STAT(_name, _stat) \
58 	I40E_STAT(struct i40e_ring, _name, _stat)
59 
60 /* Stats associated with a Tx or Rx ring */
61 static const struct i40e_stats i40e_gstrings_queue_stats[] = {
62 	I40E_QUEUE_STAT("%s-%u.packets", stats.packets),
63 	I40E_QUEUE_STAT("%s-%u.bytes", stats.bytes),
64 };
65 
66 /**
67  * i40e_add_one_ethtool_stat - copy the stat into the supplied buffer
68  * @data: location to store the stat value
69  * @pointer: basis for where to copy from
70  * @stat: the stat definition
71  *
72  * Copies the stat data defined by the pointer and stat structure pair into
73  * the memory supplied as data. Used to implement i40e_add_ethtool_stats and
74  * i40e_add_queue_stats. If the pointer is null, data will be zero'd.
75  */
76 static void
i40e_add_one_ethtool_stat(u64 * data,void * pointer,const struct i40e_stats * stat)77 i40e_add_one_ethtool_stat(u64 *data, void *pointer,
78 			  const struct i40e_stats *stat)
79 {
80 	char *p;
81 
82 	if (!pointer) {
83 		/* ensure that the ethtool data buffer is zero'd for any stats
84 		 * which don't have a valid pointer.
85 		 */
86 		*data = 0;
87 		return;
88 	}
89 
90 	p = (char *)pointer + stat->stat_offset;
91 	switch (stat->sizeof_stat) {
92 	case sizeof(u64):
93 		*data = *((u64 *)p);
94 		break;
95 	case sizeof(u32):
96 		*data = *((u32 *)p);
97 		break;
98 	case sizeof(u16):
99 		*data = *((u16 *)p);
100 		break;
101 	case sizeof(u8):
102 		*data = *((u8 *)p);
103 		break;
104 	default:
105 		WARN_ONCE(1, "unexpected stat size for %s",
106 			  stat->stat_string);
107 		*data = 0;
108 	}
109 }
110 
111 /**
112  * __i40e_add_ethtool_stats - copy stats into the ethtool supplied buffer
113  * @data: ethtool stats buffer
114  * @pointer: location to copy stats from
115  * @stats: array of stats to copy
116  * @size: the size of the stats definition
117  *
118  * Copy the stats defined by the stats array using the pointer as a base into
119  * the data buffer supplied by ethtool. Updates the data pointer to point to
120  * the next empty location for successive calls to __i40e_add_ethtool_stats.
121  * If pointer is null, set the data values to zero and update the pointer to
122  * skip these stats.
123  **/
124 static void
__i40e_add_ethtool_stats(u64 ** data,void * pointer,const struct i40e_stats stats[],const unsigned int size)125 __i40e_add_ethtool_stats(u64 **data, void *pointer,
126 			 const struct i40e_stats stats[],
127 			 const unsigned int size)
128 {
129 	unsigned int i;
130 
131 	for (i = 0; i < size; i++)
132 		i40e_add_one_ethtool_stat((*data)++, pointer, &stats[i]);
133 }
134 
135 /**
136  * i40e_add_ethtool_stats - copy stats into ethtool supplied buffer
137  * @data: ethtool stats buffer
138  * @pointer: location where stats are stored
139  * @stats: static const array of stat definitions
140  *
141  * Macro to ease the use of __i40e_add_ethtool_stats by taking a static
142  * constant stats array and passing the ARRAY_SIZE(). This avoids typos by
143  * ensuring that we pass the size associated with the given stats array.
144  *
145  * The parameter @stats is evaluated twice, so parameters with side effects
146  * should be avoided.
147  **/
148 #define i40e_add_ethtool_stats(data, pointer, stats) \
149 	__i40e_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
150 
151 /**
152  * i40e_add_queue_stats - copy queue statistics into supplied buffer
153  * @data: ethtool stats buffer
154  * @ring: the ring to copy
155  *
156  * Queue statistics must be copied while protected by
157  * u64_stats_fetch_begin_irq, so we can't directly use i40e_add_ethtool_stats.
158  * Assumes that queue stats are defined in i40e_gstrings_queue_stats. If the
159  * ring pointer is null, zero out the queue stat values and update the data
160  * pointer. Otherwise safely copy the stats from the ring into the supplied
161  * buffer and update the data pointer when finished.
162  *
163  * This function expects to be called while under rcu_read_lock().
164  **/
165 static void
i40e_add_queue_stats(u64 ** data,struct i40e_ring * ring)166 i40e_add_queue_stats(u64 **data, struct i40e_ring *ring)
167 {
168 	const unsigned int size = ARRAY_SIZE(i40e_gstrings_queue_stats);
169 	const struct i40e_stats *stats = i40e_gstrings_queue_stats;
170 	unsigned int start;
171 	unsigned int i;
172 
173 	/* To avoid invalid statistics values, ensure that we keep retrying
174 	 * the copy until we get a consistent value according to
175 	 * u64_stats_fetch_retry_irq. But first, make sure our ring is
176 	 * non-null before attempting to access its syncp.
177 	 */
178 	do {
179 		start = !ring ? 0 : u64_stats_fetch_begin_irq(&ring->syncp);
180 		for (i = 0; i < size; i++) {
181 			i40e_add_one_ethtool_stat(&(*data)[i], ring,
182 						  &stats[i]);
183 		}
184 	} while (ring && u64_stats_fetch_retry_irq(&ring->syncp, start));
185 
186 	/* Once we successfully copy the stats in, update the data pointer */
187 	*data += size;
188 }
189 
190 /**
191  * __i40e_add_stat_strings - copy stat strings into ethtool buffer
192  * @p: ethtool supplied buffer
193  * @stats: stat definitions array
194  * @size: size of the stats array
195  *
196  * Format and copy the strings described by stats into the buffer pointed at
197  * by p.
198  **/
__i40e_add_stat_strings(u8 ** p,const struct i40e_stats stats[],const unsigned int size,...)199 static void __i40e_add_stat_strings(u8 **p, const struct i40e_stats stats[],
200 				    const unsigned int size, ...)
201 {
202 	unsigned int i;
203 
204 	for (i = 0; i < size; i++) {
205 		va_list args;
206 
207 		va_start(args, size);
208 		vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
209 		*p += ETH_GSTRING_LEN;
210 		va_end(args);
211 	}
212 }
213 
214 /**
215  * i40e_add_stat_strings - copy stat strings into ethtool buffer
216  * @p: ethtool supplied buffer
217  * @stats: stat definitions array
218  *
219  * Format and copy the strings described by the const static stats value into
220  * the buffer pointed at by p.
221  *
222  * The parameter @stats is evaluated twice, so parameters with side effects
223  * should be avoided. Additionally, stats must be an array such that
224  * ARRAY_SIZE can be called on it.
225  **/
226 #define i40e_add_stat_strings(p, stats, ...) \
227 	__i40e_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
228 
229 #define I40E_PF_STAT(_name, _stat) \
230 	I40E_STAT(struct i40e_pf, _name, _stat)
231 #define I40E_VSI_STAT(_name, _stat) \
232 	I40E_STAT(struct i40e_vsi, _name, _stat)
233 #define I40E_VEB_STAT(_name, _stat) \
234 	I40E_STAT(struct i40e_veb, _name, _stat)
235 #define I40E_VEB_TC_STAT(_name, _stat) \
236 	I40E_STAT(struct i40e_cp_veb_tc_stats, _name, _stat)
237 #define I40E_PFC_STAT(_name, _stat) \
238 	I40E_STAT(struct i40e_pfc_stats, _name, _stat)
239 #define I40E_QUEUE_STAT(_name, _stat) \
240 	I40E_STAT(struct i40e_ring, _name, _stat)
241 
242 static const struct i40e_stats i40e_gstrings_net_stats[] = {
243 	I40E_NETDEV_STAT(rx_packets),
244 	I40E_NETDEV_STAT(tx_packets),
245 	I40E_NETDEV_STAT(rx_bytes),
246 	I40E_NETDEV_STAT(tx_bytes),
247 	I40E_NETDEV_STAT(rx_errors),
248 	I40E_NETDEV_STAT(tx_errors),
249 	I40E_NETDEV_STAT(rx_dropped),
250 	I40E_NETDEV_STAT(tx_dropped),
251 	I40E_NETDEV_STAT(collisions),
252 	I40E_NETDEV_STAT(rx_length_errors),
253 	I40E_NETDEV_STAT(rx_crc_errors),
254 };
255 
256 static const struct i40e_stats i40e_gstrings_veb_stats[] = {
257 	I40E_VEB_STAT("veb.rx_bytes", stats.rx_bytes),
258 	I40E_VEB_STAT("veb.tx_bytes", stats.tx_bytes),
259 	I40E_VEB_STAT("veb.rx_unicast", stats.rx_unicast),
260 	I40E_VEB_STAT("veb.tx_unicast", stats.tx_unicast),
261 	I40E_VEB_STAT("veb.rx_multicast", stats.rx_multicast),
262 	I40E_VEB_STAT("veb.tx_multicast", stats.tx_multicast),
263 	I40E_VEB_STAT("veb.rx_broadcast", stats.rx_broadcast),
264 	I40E_VEB_STAT("veb.tx_broadcast", stats.tx_broadcast),
265 	I40E_VEB_STAT("veb.rx_discards", stats.rx_discards),
266 	I40E_VEB_STAT("veb.tx_discards", stats.tx_discards),
267 	I40E_VEB_STAT("veb.tx_errors", stats.tx_errors),
268 	I40E_VEB_STAT("veb.rx_unknown_protocol", stats.rx_unknown_protocol),
269 };
270 
271 struct i40e_cp_veb_tc_stats {
272 	u64 tc_rx_packets;
273 	u64 tc_rx_bytes;
274 	u64 tc_tx_packets;
275 	u64 tc_tx_bytes;
276 };
277 
278 static const struct i40e_stats i40e_gstrings_veb_tc_stats[] = {
279 	I40E_VEB_TC_STAT("veb.tc_%u_tx_packets", tc_tx_packets),
280 	I40E_VEB_TC_STAT("veb.tc_%u_tx_bytes", tc_tx_bytes),
281 	I40E_VEB_TC_STAT("veb.tc_%u_rx_packets", tc_rx_packets),
282 	I40E_VEB_TC_STAT("veb.tc_%u_rx_bytes", tc_rx_bytes),
283 };
284 
285 static const struct i40e_stats i40e_gstrings_misc_stats[] = {
286 	I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast),
287 	I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast),
288 	I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast),
289 	I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast),
290 	I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
291 	I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
292 	I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
293 	I40E_VSI_STAT("tx_linearize", tx_linearize),
294 	I40E_VSI_STAT("tx_force_wb", tx_force_wb),
295 	I40E_VSI_STAT("tx_busy", tx_busy),
296 	I40E_VSI_STAT("tx_stopped", tx_stopped),
297 	I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed),
298 	I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
299 	I40E_VSI_STAT("rx_cache_reuse", rx_page_reuse),
300 	I40E_VSI_STAT("rx_cache_alloc", rx_page_alloc),
301 	I40E_VSI_STAT("rx_cache_waive", rx_page_waive),
302 	I40E_VSI_STAT("rx_cache_busy", rx_page_busy),
303 	I40E_VSI_STAT("tx_restart", tx_restart),
304 };
305 
306 /* These PF_STATs might look like duplicates of some NETDEV_STATs,
307  * but they are separate.  This device supports Virtualization, and
308  * as such might have several netdevs supporting VMDq and FCoE going
309  * through a single port.  The NETDEV_STATs are for individual netdevs
310  * seen at the top of the stack, and the PF_STATs are for the physical
311  * function at the bottom of the stack hosting those netdevs.
312  *
313  * The PF_STATs are appended to the netdev stats only when ethtool -S
314  * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
315  */
316 static const struct i40e_stats i40e_gstrings_stats[] = {
317 	I40E_PF_STAT("port.rx_bytes", stats.eth.rx_bytes),
318 	I40E_PF_STAT("port.tx_bytes", stats.eth.tx_bytes),
319 	I40E_PF_STAT("port.rx_unicast", stats.eth.rx_unicast),
320 	I40E_PF_STAT("port.tx_unicast", stats.eth.tx_unicast),
321 	I40E_PF_STAT("port.rx_multicast", stats.eth.rx_multicast),
322 	I40E_PF_STAT("port.tx_multicast", stats.eth.tx_multicast),
323 	I40E_PF_STAT("port.rx_broadcast", stats.eth.rx_broadcast),
324 	I40E_PF_STAT("port.tx_broadcast", stats.eth.tx_broadcast),
325 	I40E_PF_STAT("port.tx_errors", stats.eth.tx_errors),
326 	I40E_PF_STAT("port.rx_dropped", stats.eth.rx_discards),
327 	I40E_PF_STAT("port.tx_dropped_link_down", stats.tx_dropped_link_down),
328 	I40E_PF_STAT("port.rx_crc_errors", stats.crc_errors),
329 	I40E_PF_STAT("port.illegal_bytes", stats.illegal_bytes),
330 	I40E_PF_STAT("port.mac_local_faults", stats.mac_local_faults),
331 	I40E_PF_STAT("port.mac_remote_faults", stats.mac_remote_faults),
332 	I40E_PF_STAT("port.tx_timeout", tx_timeout_count),
333 	I40E_PF_STAT("port.rx_csum_bad", hw_csum_rx_error),
334 	I40E_PF_STAT("port.rx_length_errors", stats.rx_length_errors),
335 	I40E_PF_STAT("port.link_xon_rx", stats.link_xon_rx),
336 	I40E_PF_STAT("port.link_xoff_rx", stats.link_xoff_rx),
337 	I40E_PF_STAT("port.link_xon_tx", stats.link_xon_tx),
338 	I40E_PF_STAT("port.link_xoff_tx", stats.link_xoff_tx),
339 	I40E_PF_STAT("port.rx_size_64", stats.rx_size_64),
340 	I40E_PF_STAT("port.rx_size_127", stats.rx_size_127),
341 	I40E_PF_STAT("port.rx_size_255", stats.rx_size_255),
342 	I40E_PF_STAT("port.rx_size_511", stats.rx_size_511),
343 	I40E_PF_STAT("port.rx_size_1023", stats.rx_size_1023),
344 	I40E_PF_STAT("port.rx_size_1522", stats.rx_size_1522),
345 	I40E_PF_STAT("port.rx_size_big", stats.rx_size_big),
346 	I40E_PF_STAT("port.tx_size_64", stats.tx_size_64),
347 	I40E_PF_STAT("port.tx_size_127", stats.tx_size_127),
348 	I40E_PF_STAT("port.tx_size_255", stats.tx_size_255),
349 	I40E_PF_STAT("port.tx_size_511", stats.tx_size_511),
350 	I40E_PF_STAT("port.tx_size_1023", stats.tx_size_1023),
351 	I40E_PF_STAT("port.tx_size_1522", stats.tx_size_1522),
352 	I40E_PF_STAT("port.tx_size_big", stats.tx_size_big),
353 	I40E_PF_STAT("port.rx_undersize", stats.rx_undersize),
354 	I40E_PF_STAT("port.rx_fragments", stats.rx_fragments),
355 	I40E_PF_STAT("port.rx_oversize", stats.rx_oversize),
356 	I40E_PF_STAT("port.rx_jabber", stats.rx_jabber),
357 	I40E_PF_STAT("port.VF_admin_queue_requests", vf_aq_requests),
358 	I40E_PF_STAT("port.arq_overflows", arq_overflows),
359 	I40E_PF_STAT("port.tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
360 	I40E_PF_STAT("port.rx_hwtstamp_cleared", rx_hwtstamp_cleared),
361 	I40E_PF_STAT("port.tx_hwtstamp_skipped", tx_hwtstamp_skipped),
362 	I40E_PF_STAT("port.fdir_flush_cnt", fd_flush_cnt),
363 	I40E_PF_STAT("port.fdir_atr_match", stats.fd_atr_match),
364 	I40E_PF_STAT("port.fdir_atr_tunnel_match", stats.fd_atr_tunnel_match),
365 	I40E_PF_STAT("port.fdir_atr_status", stats.fd_atr_status),
366 	I40E_PF_STAT("port.fdir_sb_match", stats.fd_sb_match),
367 	I40E_PF_STAT("port.fdir_sb_status", stats.fd_sb_status),
368 
369 	/* LPI stats */
370 	I40E_PF_STAT("port.tx_lpi_status", stats.tx_lpi_status),
371 	I40E_PF_STAT("port.rx_lpi_status", stats.rx_lpi_status),
372 	I40E_PF_STAT("port.tx_lpi_count", stats.tx_lpi_count),
373 	I40E_PF_STAT("port.rx_lpi_count", stats.rx_lpi_count),
374 };
375 
376 struct i40e_pfc_stats {
377 	u64 priority_xon_rx;
378 	u64 priority_xoff_rx;
379 	u64 priority_xon_tx;
380 	u64 priority_xoff_tx;
381 	u64 priority_xon_2_xoff;
382 };
383 
384 static const struct i40e_stats i40e_gstrings_pfc_stats[] = {
385 	I40E_PFC_STAT("port.tx_priority_%u_xon_tx", priority_xon_tx),
386 	I40E_PFC_STAT("port.tx_priority_%u_xoff_tx", priority_xoff_tx),
387 	I40E_PFC_STAT("port.rx_priority_%u_xon_rx", priority_xon_rx),
388 	I40E_PFC_STAT("port.rx_priority_%u_xoff_rx", priority_xoff_rx),
389 	I40E_PFC_STAT("port.rx_priority_%u_xon_2_xoff", priority_xon_2_xoff),
390 };
391 
392 #define I40E_NETDEV_STATS_LEN	ARRAY_SIZE(i40e_gstrings_net_stats)
393 
394 #define I40E_MISC_STATS_LEN	ARRAY_SIZE(i40e_gstrings_misc_stats)
395 
396 #define I40E_VSI_STATS_LEN	(I40E_NETDEV_STATS_LEN + I40E_MISC_STATS_LEN)
397 
398 #define I40E_PFC_STATS_LEN	(ARRAY_SIZE(i40e_gstrings_pfc_stats) * \
399 				 I40E_MAX_USER_PRIORITY)
400 
401 #define I40E_VEB_STATS_LEN	(ARRAY_SIZE(i40e_gstrings_veb_stats) + \
402 				 (ARRAY_SIZE(i40e_gstrings_veb_tc_stats) * \
403 				  I40E_MAX_TRAFFIC_CLASS))
404 
405 #define I40E_GLOBAL_STATS_LEN	ARRAY_SIZE(i40e_gstrings_stats)
406 
407 #define I40E_PF_STATS_LEN	(I40E_GLOBAL_STATS_LEN + \
408 				 I40E_PFC_STATS_LEN + \
409 				 I40E_VEB_STATS_LEN + \
410 				 I40E_VSI_STATS_LEN)
411 
412 /* Length of stats for a single queue */
413 #define I40E_QUEUE_STATS_LEN	ARRAY_SIZE(i40e_gstrings_queue_stats)
414 
415 enum i40e_ethtool_test_id {
416 	I40E_ETH_TEST_REG = 0,
417 	I40E_ETH_TEST_EEPROM,
418 	I40E_ETH_TEST_INTR,
419 	I40E_ETH_TEST_LINK,
420 };
421 
422 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
423 	"Register test  (offline)",
424 	"Eeprom test    (offline)",
425 	"Interrupt test (offline)",
426 	"Link test   (on/offline)"
427 };
428 
429 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
430 
431 struct i40e_priv_flags {
432 	char flag_string[ETH_GSTRING_LEN];
433 	u64 flag;
434 	bool read_only;
435 };
436 
437 #define I40E_PRIV_FLAG(_name, _flag, _read_only) { \
438 	.flag_string = _name, \
439 	.flag = _flag, \
440 	.read_only = _read_only, \
441 }
442 
443 static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = {
444 	/* NOTE: MFP setting cannot be changed */
445 	I40E_PRIV_FLAG("MFP", I40E_FLAG_MFP_ENABLED, 1),
446 	I40E_PRIV_FLAG("total-port-shutdown",
447 		       I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED, 1),
448 	I40E_PRIV_FLAG("LinkPolling", I40E_FLAG_LINK_POLLING_ENABLED, 0),
449 	I40E_PRIV_FLAG("flow-director-atr", I40E_FLAG_FD_ATR_ENABLED, 0),
450 	I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0),
451 	I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0),
452 	I40E_PRIV_FLAG("link-down-on-close",
453 		       I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED, 0),
454 	I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0),
455 	I40E_PRIV_FLAG("disable-source-pruning",
456 		       I40E_FLAG_SOURCE_PRUNING_DISABLED, 0),
457 	I40E_PRIV_FLAG("disable-fw-lldp", I40E_FLAG_DISABLE_FW_LLDP, 0),
458 	I40E_PRIV_FLAG("rs-fec", I40E_FLAG_RS_FEC, 0),
459 	I40E_PRIV_FLAG("base-r-fec", I40E_FLAG_BASE_R_FEC, 0),
460 };
461 
462 #define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags)
463 
464 /* Private flags with a global effect, restricted to PF 0 */
465 static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = {
466 	I40E_PRIV_FLAG("vf-true-promisc-support",
467 		       I40E_FLAG_TRUE_PROMISC_SUPPORT, 0),
468 };
469 
470 #define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags)
471 
472 /**
473  * i40e_partition_setting_complaint - generic complaint for MFP restriction
474  * @pf: the PF struct
475  **/
i40e_partition_setting_complaint(struct i40e_pf * pf)476 static void i40e_partition_setting_complaint(struct i40e_pf *pf)
477 {
478 	dev_info(&pf->pdev->dev,
479 		 "The link settings are allowed to be changed only from the first partition of a given port. Please switch to the first partition in order to change the setting.\n");
480 }
481 
482 /**
483  * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes
484  * @pf: PF struct with phy_types
485  * @ks: ethtool link ksettings struct to fill out
486  *
487  **/
i40e_phy_type_to_ethtool(struct i40e_pf * pf,struct ethtool_link_ksettings * ks)488 static void i40e_phy_type_to_ethtool(struct i40e_pf *pf,
489 				     struct ethtool_link_ksettings *ks)
490 {
491 	struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info;
492 	u64 phy_types = pf->hw.phy.phy_types;
493 
494 	ethtool_link_ksettings_zero_link_mode(ks, supported);
495 	ethtool_link_ksettings_zero_link_mode(ks, advertising);
496 
497 	if (phy_types & I40E_CAP_PHY_TYPE_SGMII) {
498 		ethtool_link_ksettings_add_link_mode(ks, supported,
499 						     1000baseT_Full);
500 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
501 			ethtool_link_ksettings_add_link_mode(ks, advertising,
502 							     1000baseT_Full);
503 		if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
504 			ethtool_link_ksettings_add_link_mode(ks, supported,
505 							     100baseT_Full);
506 			ethtool_link_ksettings_add_link_mode(ks, advertising,
507 							     100baseT_Full);
508 		}
509 	}
510 	if (phy_types & I40E_CAP_PHY_TYPE_XAUI ||
511 	    phy_types & I40E_CAP_PHY_TYPE_XFI ||
512 	    phy_types & I40E_CAP_PHY_TYPE_SFI ||
513 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_SFPP_CU ||
514 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC) {
515 		ethtool_link_ksettings_add_link_mode(ks, supported,
516 						     10000baseT_Full);
517 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
518 			ethtool_link_ksettings_add_link_mode(ks, advertising,
519 							     10000baseT_Full);
520 	}
521 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_T) {
522 		ethtool_link_ksettings_add_link_mode(ks, supported,
523 						     10000baseT_Full);
524 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
525 			ethtool_link_ksettings_add_link_mode(ks, advertising,
526 							     10000baseT_Full);
527 	}
528 	if (phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T) {
529 		ethtool_link_ksettings_add_link_mode(ks, supported,
530 						     2500baseT_Full);
531 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
532 			ethtool_link_ksettings_add_link_mode(ks, advertising,
533 							     2500baseT_Full);
534 	}
535 	if (phy_types & I40E_CAP_PHY_TYPE_5GBASE_T) {
536 		ethtool_link_ksettings_add_link_mode(ks, supported,
537 						     5000baseT_Full);
538 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
539 			ethtool_link_ksettings_add_link_mode(ks, advertising,
540 							     5000baseT_Full);
541 	}
542 	if (phy_types & I40E_CAP_PHY_TYPE_XLAUI ||
543 	    phy_types & I40E_CAP_PHY_TYPE_XLPPI ||
544 	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC)
545 		ethtool_link_ksettings_add_link_mode(ks, supported,
546 						     40000baseCR4_Full);
547 	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
548 	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) {
549 		ethtool_link_ksettings_add_link_mode(ks, supported,
550 						     40000baseCR4_Full);
551 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB)
552 			ethtool_link_ksettings_add_link_mode(ks, advertising,
553 							     40000baseCR4_Full);
554 	}
555 	if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
556 		ethtool_link_ksettings_add_link_mode(ks, supported,
557 						     100baseT_Full);
558 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
559 			ethtool_link_ksettings_add_link_mode(ks, advertising,
560 							     100baseT_Full);
561 	}
562 	if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T) {
563 		ethtool_link_ksettings_add_link_mode(ks, supported,
564 						     1000baseT_Full);
565 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
566 			ethtool_link_ksettings_add_link_mode(ks, advertising,
567 							     1000baseT_Full);
568 	}
569 	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4) {
570 		ethtool_link_ksettings_add_link_mode(ks, supported,
571 						     40000baseSR4_Full);
572 		ethtool_link_ksettings_add_link_mode(ks, advertising,
573 						     40000baseSR4_Full);
574 	}
575 	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4) {
576 		ethtool_link_ksettings_add_link_mode(ks, supported,
577 						     40000baseLR4_Full);
578 		ethtool_link_ksettings_add_link_mode(ks, advertising,
579 						     40000baseLR4_Full);
580 	}
581 	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) {
582 		ethtool_link_ksettings_add_link_mode(ks, supported,
583 						     40000baseKR4_Full);
584 		ethtool_link_ksettings_add_link_mode(ks, advertising,
585 						     40000baseKR4_Full);
586 	}
587 	if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) {
588 		ethtool_link_ksettings_add_link_mode(ks, supported,
589 						     20000baseKR2_Full);
590 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB)
591 			ethtool_link_ksettings_add_link_mode(ks, advertising,
592 							     20000baseKR2_Full);
593 	}
594 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) {
595 		ethtool_link_ksettings_add_link_mode(ks, supported,
596 						     10000baseKX4_Full);
597 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
598 			ethtool_link_ksettings_add_link_mode(ks, advertising,
599 							     10000baseKX4_Full);
600 	}
601 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR &&
602 	    !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
603 		ethtool_link_ksettings_add_link_mode(ks, supported,
604 						     10000baseKR_Full);
605 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
606 			ethtool_link_ksettings_add_link_mode(ks, advertising,
607 							     10000baseKR_Full);
608 	}
609 	if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX &&
610 	    !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
611 		ethtool_link_ksettings_add_link_mode(ks, supported,
612 						     1000baseKX_Full);
613 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
614 			ethtool_link_ksettings_add_link_mode(ks, advertising,
615 							     1000baseKX_Full);
616 	}
617 	/* need to add 25G PHY types */
618 	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR) {
619 		ethtool_link_ksettings_add_link_mode(ks, supported,
620 						     25000baseKR_Full);
621 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
622 			ethtool_link_ksettings_add_link_mode(ks, advertising,
623 							     25000baseKR_Full);
624 	}
625 	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR) {
626 		ethtool_link_ksettings_add_link_mode(ks, supported,
627 						     25000baseCR_Full);
628 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
629 			ethtool_link_ksettings_add_link_mode(ks, advertising,
630 							     25000baseCR_Full);
631 	}
632 	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
633 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) {
634 		ethtool_link_ksettings_add_link_mode(ks, supported,
635 						     25000baseSR_Full);
636 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
637 			ethtool_link_ksettings_add_link_mode(ks, advertising,
638 							     25000baseSR_Full);
639 	}
640 	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
641 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
642 		ethtool_link_ksettings_add_link_mode(ks, supported,
643 						     25000baseCR_Full);
644 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
645 			ethtool_link_ksettings_add_link_mode(ks, advertising,
646 							     25000baseCR_Full);
647 	}
648 	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
649 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
650 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
651 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
652 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
653 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
654 		ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
655 		ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
656 		ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
657 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) {
658 			ethtool_link_ksettings_add_link_mode(ks, advertising,
659 							     FEC_NONE);
660 			ethtool_link_ksettings_add_link_mode(ks, advertising,
661 							     FEC_RS);
662 			ethtool_link_ksettings_add_link_mode(ks, advertising,
663 							     FEC_BASER);
664 		}
665 	}
666 	/* need to add new 10G PHY types */
667 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
668 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU) {
669 		ethtool_link_ksettings_add_link_mode(ks, supported,
670 						     10000baseCR_Full);
671 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
672 			ethtool_link_ksettings_add_link_mode(ks, advertising,
673 							     10000baseCR_Full);
674 	}
675 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR) {
676 		ethtool_link_ksettings_add_link_mode(ks, supported,
677 						     10000baseSR_Full);
678 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
679 			ethtool_link_ksettings_add_link_mode(ks, advertising,
680 							     10000baseSR_Full);
681 	}
682 	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR) {
683 		ethtool_link_ksettings_add_link_mode(ks, supported,
684 						     10000baseLR_Full);
685 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
686 			ethtool_link_ksettings_add_link_mode(ks, advertising,
687 							     10000baseLR_Full);
688 	}
689 	if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
690 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
691 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL) {
692 		ethtool_link_ksettings_add_link_mode(ks, supported,
693 						     1000baseX_Full);
694 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
695 			ethtool_link_ksettings_add_link_mode(ks, advertising,
696 							     1000baseX_Full);
697 	}
698 	/* Autoneg PHY types */
699 	if (phy_types & I40E_CAP_PHY_TYPE_SGMII ||
700 	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4 ||
701 	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
702 	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4 ||
703 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
704 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
705 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
706 	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
707 	    phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2 ||
708 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR ||
709 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR ||
710 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4 ||
711 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR ||
712 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU ||
713 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
714 	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_T ||
715 	    phy_types & I40E_CAP_PHY_TYPE_5GBASE_T ||
716 	    phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T ||
717 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL ||
718 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_T ||
719 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
720 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
721 	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX ||
722 	    phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
723 		ethtool_link_ksettings_add_link_mode(ks, supported,
724 						     Autoneg);
725 		ethtool_link_ksettings_add_link_mode(ks, advertising,
726 						     Autoneg);
727 	}
728 }
729 
730 /**
731  * i40e_get_settings_link_up_fec - Get the FEC mode encoding from mask
732  * @req_fec_info: mask request FEC info
733  * @ks: ethtool ksettings to fill in
734  **/
i40e_get_settings_link_up_fec(u8 req_fec_info,struct ethtool_link_ksettings * ks)735 static void i40e_get_settings_link_up_fec(u8 req_fec_info,
736 					  struct ethtool_link_ksettings *ks)
737 {
738 	ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
739 	ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
740 	ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
741 
742 	if ((I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) &&
743 	    (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info)) {
744 		ethtool_link_ksettings_add_link_mode(ks, advertising,
745 						     FEC_NONE);
746 		ethtool_link_ksettings_add_link_mode(ks, advertising,
747 						     FEC_BASER);
748 		ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
749 	} else if (I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) {
750 		ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
751 	} else if (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info) {
752 		ethtool_link_ksettings_add_link_mode(ks, advertising,
753 						     FEC_BASER);
754 	} else {
755 		ethtool_link_ksettings_add_link_mode(ks, advertising,
756 						     FEC_NONE);
757 	}
758 }
759 
760 /**
761  * i40e_get_settings_link_up - Get the Link settings for when link is up
762  * @hw: hw structure
763  * @ks: ethtool ksettings to fill in
764  * @netdev: network interface device structure
765  * @pf: pointer to physical function struct
766  **/
i40e_get_settings_link_up(struct i40e_hw * hw,struct ethtool_link_ksettings * ks,struct net_device * netdev,struct i40e_pf * pf)767 static void i40e_get_settings_link_up(struct i40e_hw *hw,
768 				      struct ethtool_link_ksettings *ks,
769 				      struct net_device *netdev,
770 				      struct i40e_pf *pf)
771 {
772 	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
773 	struct ethtool_link_ksettings cap_ksettings;
774 	u32 link_speed = hw_link_info->link_speed;
775 
776 	/* Initialize supported and advertised settings based on phy settings */
777 	switch (hw_link_info->phy_type) {
778 	case I40E_PHY_TYPE_40GBASE_CR4:
779 	case I40E_PHY_TYPE_40GBASE_CR4_CU:
780 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
781 		ethtool_link_ksettings_add_link_mode(ks, supported,
782 						     40000baseCR4_Full);
783 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
784 		ethtool_link_ksettings_add_link_mode(ks, advertising,
785 						     40000baseCR4_Full);
786 		break;
787 	case I40E_PHY_TYPE_XLAUI:
788 	case I40E_PHY_TYPE_XLPPI:
789 	case I40E_PHY_TYPE_40GBASE_AOC:
790 		ethtool_link_ksettings_add_link_mode(ks, supported,
791 						     40000baseCR4_Full);
792 		ethtool_link_ksettings_add_link_mode(ks, advertising,
793 						     40000baseCR4_Full);
794 		break;
795 	case I40E_PHY_TYPE_40GBASE_SR4:
796 		ethtool_link_ksettings_add_link_mode(ks, supported,
797 						     40000baseSR4_Full);
798 		ethtool_link_ksettings_add_link_mode(ks, advertising,
799 						     40000baseSR4_Full);
800 		break;
801 	case I40E_PHY_TYPE_40GBASE_LR4:
802 		ethtool_link_ksettings_add_link_mode(ks, supported,
803 						     40000baseLR4_Full);
804 		ethtool_link_ksettings_add_link_mode(ks, advertising,
805 						     40000baseLR4_Full);
806 		break;
807 	case I40E_PHY_TYPE_25GBASE_SR:
808 	case I40E_PHY_TYPE_25GBASE_LR:
809 	case I40E_PHY_TYPE_10GBASE_SR:
810 	case I40E_PHY_TYPE_10GBASE_LR:
811 	case I40E_PHY_TYPE_1000BASE_SX:
812 	case I40E_PHY_TYPE_1000BASE_LX:
813 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
814 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
815 		ethtool_link_ksettings_add_link_mode(ks, supported,
816 						     25000baseSR_Full);
817 		ethtool_link_ksettings_add_link_mode(ks, advertising,
818 						     25000baseSR_Full);
819 		i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
820 		ethtool_link_ksettings_add_link_mode(ks, supported,
821 						     10000baseSR_Full);
822 		ethtool_link_ksettings_add_link_mode(ks, advertising,
823 						     10000baseSR_Full);
824 		ethtool_link_ksettings_add_link_mode(ks, supported,
825 						     10000baseLR_Full);
826 		ethtool_link_ksettings_add_link_mode(ks, advertising,
827 						     10000baseLR_Full);
828 		ethtool_link_ksettings_add_link_mode(ks, supported,
829 						     1000baseX_Full);
830 		ethtool_link_ksettings_add_link_mode(ks, advertising,
831 						     1000baseX_Full);
832 		ethtool_link_ksettings_add_link_mode(ks, supported,
833 						     10000baseT_Full);
834 		if (hw_link_info->module_type[2] &
835 		    I40E_MODULE_TYPE_1000BASE_SX ||
836 		    hw_link_info->module_type[2] &
837 		    I40E_MODULE_TYPE_1000BASE_LX) {
838 			ethtool_link_ksettings_add_link_mode(ks, supported,
839 							     1000baseT_Full);
840 			if (hw_link_info->requested_speeds &
841 			    I40E_LINK_SPEED_1GB)
842 				ethtool_link_ksettings_add_link_mode(
843 				     ks, advertising, 1000baseT_Full);
844 		}
845 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
846 			ethtool_link_ksettings_add_link_mode(ks, advertising,
847 							     10000baseT_Full);
848 		break;
849 	case I40E_PHY_TYPE_10GBASE_T:
850 	case I40E_PHY_TYPE_5GBASE_T_LINK_STATUS:
851 	case I40E_PHY_TYPE_2_5GBASE_T_LINK_STATUS:
852 	case I40E_PHY_TYPE_1000BASE_T:
853 	case I40E_PHY_TYPE_100BASE_TX:
854 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
855 		ethtool_link_ksettings_add_link_mode(ks, supported,
856 						     10000baseT_Full);
857 		ethtool_link_ksettings_add_link_mode(ks, supported,
858 						     5000baseT_Full);
859 		ethtool_link_ksettings_add_link_mode(ks, supported,
860 						     2500baseT_Full);
861 		ethtool_link_ksettings_add_link_mode(ks, supported,
862 						     1000baseT_Full);
863 		ethtool_link_ksettings_add_link_mode(ks, supported,
864 						     100baseT_Full);
865 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
866 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
867 			ethtool_link_ksettings_add_link_mode(ks, advertising,
868 							     10000baseT_Full);
869 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
870 			ethtool_link_ksettings_add_link_mode(ks, advertising,
871 							     5000baseT_Full);
872 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
873 			ethtool_link_ksettings_add_link_mode(ks, advertising,
874 							     2500baseT_Full);
875 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
876 			ethtool_link_ksettings_add_link_mode(ks, advertising,
877 							     1000baseT_Full);
878 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
879 			ethtool_link_ksettings_add_link_mode(ks, advertising,
880 							     100baseT_Full);
881 		break;
882 	case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
883 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
884 		ethtool_link_ksettings_add_link_mode(ks, supported,
885 						     1000baseT_Full);
886 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
887 		ethtool_link_ksettings_add_link_mode(ks, advertising,
888 						     1000baseT_Full);
889 		break;
890 	case I40E_PHY_TYPE_10GBASE_CR1_CU:
891 	case I40E_PHY_TYPE_10GBASE_CR1:
892 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
893 		ethtool_link_ksettings_add_link_mode(ks, supported,
894 						     10000baseT_Full);
895 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
896 		ethtool_link_ksettings_add_link_mode(ks, advertising,
897 						     10000baseT_Full);
898 		break;
899 	case I40E_PHY_TYPE_XAUI:
900 	case I40E_PHY_TYPE_XFI:
901 	case I40E_PHY_TYPE_SFI:
902 	case I40E_PHY_TYPE_10GBASE_SFPP_CU:
903 	case I40E_PHY_TYPE_10GBASE_AOC:
904 		ethtool_link_ksettings_add_link_mode(ks, supported,
905 						     10000baseT_Full);
906 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
907 			ethtool_link_ksettings_add_link_mode(ks, advertising,
908 							     10000baseT_Full);
909 		i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
910 		break;
911 	case I40E_PHY_TYPE_SGMII:
912 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
913 		ethtool_link_ksettings_add_link_mode(ks, supported,
914 						     1000baseT_Full);
915 		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
916 			ethtool_link_ksettings_add_link_mode(ks, advertising,
917 							     1000baseT_Full);
918 		if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
919 			ethtool_link_ksettings_add_link_mode(ks, supported,
920 							     100baseT_Full);
921 			if (hw_link_info->requested_speeds &
922 			    I40E_LINK_SPEED_100MB)
923 				ethtool_link_ksettings_add_link_mode(
924 				      ks, advertising, 100baseT_Full);
925 		}
926 		break;
927 	case I40E_PHY_TYPE_40GBASE_KR4:
928 	case I40E_PHY_TYPE_25GBASE_KR:
929 	case I40E_PHY_TYPE_20GBASE_KR2:
930 	case I40E_PHY_TYPE_10GBASE_KR:
931 	case I40E_PHY_TYPE_10GBASE_KX4:
932 	case I40E_PHY_TYPE_1000BASE_KX:
933 		ethtool_link_ksettings_add_link_mode(ks, supported,
934 						     40000baseKR4_Full);
935 		ethtool_link_ksettings_add_link_mode(ks, supported,
936 						     25000baseKR_Full);
937 		ethtool_link_ksettings_add_link_mode(ks, supported,
938 						     20000baseKR2_Full);
939 		ethtool_link_ksettings_add_link_mode(ks, supported,
940 						     10000baseKR_Full);
941 		ethtool_link_ksettings_add_link_mode(ks, supported,
942 						     10000baseKX4_Full);
943 		ethtool_link_ksettings_add_link_mode(ks, supported,
944 						     1000baseKX_Full);
945 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
946 		ethtool_link_ksettings_add_link_mode(ks, advertising,
947 						     40000baseKR4_Full);
948 		ethtool_link_ksettings_add_link_mode(ks, advertising,
949 						     25000baseKR_Full);
950 		i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
951 		ethtool_link_ksettings_add_link_mode(ks, advertising,
952 						     20000baseKR2_Full);
953 		ethtool_link_ksettings_add_link_mode(ks, advertising,
954 						     10000baseKR_Full);
955 		ethtool_link_ksettings_add_link_mode(ks, advertising,
956 						     10000baseKX4_Full);
957 		ethtool_link_ksettings_add_link_mode(ks, advertising,
958 						     1000baseKX_Full);
959 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
960 		break;
961 	case I40E_PHY_TYPE_25GBASE_CR:
962 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
963 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
964 		ethtool_link_ksettings_add_link_mode(ks, supported,
965 						     25000baseCR_Full);
966 		ethtool_link_ksettings_add_link_mode(ks, advertising,
967 						     25000baseCR_Full);
968 		i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
969 
970 		break;
971 	case I40E_PHY_TYPE_25GBASE_AOC:
972 	case I40E_PHY_TYPE_25GBASE_ACC:
973 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
974 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
975 		ethtool_link_ksettings_add_link_mode(ks, supported,
976 						     25000baseCR_Full);
977 		ethtool_link_ksettings_add_link_mode(ks, advertising,
978 						     25000baseCR_Full);
979 		i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
980 
981 		ethtool_link_ksettings_add_link_mode(ks, supported,
982 						     10000baseCR_Full);
983 		ethtool_link_ksettings_add_link_mode(ks, advertising,
984 						     10000baseCR_Full);
985 		break;
986 	default:
987 		/* if we got here and link is up something bad is afoot */
988 		netdev_info(netdev,
989 			    "WARNING: Link is up but PHY type 0x%x is not recognized, or incorrect cable is in use\n",
990 			    hw_link_info->phy_type);
991 	}
992 
993 	/* Now that we've worked out everything that could be supported by the
994 	 * current PHY type, get what is supported by the NVM and intersect
995 	 * them to get what is truly supported
996 	 */
997 	memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings));
998 	i40e_phy_type_to_ethtool(pf, &cap_ksettings);
999 	ethtool_intersect_link_masks(ks, &cap_ksettings);
1000 
1001 	/* Set speed and duplex */
1002 	switch (link_speed) {
1003 	case I40E_LINK_SPEED_40GB:
1004 		ks->base.speed = SPEED_40000;
1005 		break;
1006 	case I40E_LINK_SPEED_25GB:
1007 		ks->base.speed = SPEED_25000;
1008 		break;
1009 	case I40E_LINK_SPEED_20GB:
1010 		ks->base.speed = SPEED_20000;
1011 		break;
1012 	case I40E_LINK_SPEED_10GB:
1013 		ks->base.speed = SPEED_10000;
1014 		break;
1015 	case I40E_LINK_SPEED_5GB:
1016 		ks->base.speed = SPEED_5000;
1017 		break;
1018 	case I40E_LINK_SPEED_2_5GB:
1019 		ks->base.speed = SPEED_2500;
1020 		break;
1021 	case I40E_LINK_SPEED_1GB:
1022 		ks->base.speed = SPEED_1000;
1023 		break;
1024 	case I40E_LINK_SPEED_100MB:
1025 		ks->base.speed = SPEED_100;
1026 		break;
1027 	default:
1028 		ks->base.speed = SPEED_UNKNOWN;
1029 		break;
1030 	}
1031 	ks->base.duplex = DUPLEX_FULL;
1032 }
1033 
1034 /**
1035  * i40e_get_settings_link_down - Get the Link settings for when link is down
1036  * @hw: hw structure
1037  * @ks: ethtool ksettings to fill in
1038  * @pf: pointer to physical function struct
1039  *
1040  * Reports link settings that can be determined when link is down
1041  **/
i40e_get_settings_link_down(struct i40e_hw * hw,struct ethtool_link_ksettings * ks,struct i40e_pf * pf)1042 static void i40e_get_settings_link_down(struct i40e_hw *hw,
1043 					struct ethtool_link_ksettings *ks,
1044 					struct i40e_pf *pf)
1045 {
1046 	/* link is down and the driver needs to fall back on
1047 	 * supported phy types to figure out what info to display
1048 	 */
1049 	i40e_phy_type_to_ethtool(pf, ks);
1050 
1051 	/* With no link speed and duplex are unknown */
1052 	ks->base.speed = SPEED_UNKNOWN;
1053 	ks->base.duplex = DUPLEX_UNKNOWN;
1054 }
1055 
1056 /**
1057  * i40e_get_link_ksettings - Get Link Speed and Duplex settings
1058  * @netdev: network interface device structure
1059  * @ks: ethtool ksettings
1060  *
1061  * Reports speed/duplex settings based on media_type
1062  **/
i40e_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * ks)1063 static int i40e_get_link_ksettings(struct net_device *netdev,
1064 				   struct ethtool_link_ksettings *ks)
1065 {
1066 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1067 	struct i40e_pf *pf = np->vsi->back;
1068 	struct i40e_hw *hw = &pf->hw;
1069 	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1070 	bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1071 
1072 	ethtool_link_ksettings_zero_link_mode(ks, supported);
1073 	ethtool_link_ksettings_zero_link_mode(ks, advertising);
1074 
1075 	if (link_up)
1076 		i40e_get_settings_link_up(hw, ks, netdev, pf);
1077 	else
1078 		i40e_get_settings_link_down(hw, ks, pf);
1079 
1080 	/* Now set the settings that don't rely on link being up/down */
1081 	/* Set autoneg settings */
1082 	ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1083 			    AUTONEG_ENABLE : AUTONEG_DISABLE);
1084 
1085 	/* Set media type settings */
1086 	switch (hw->phy.media_type) {
1087 	case I40E_MEDIA_TYPE_BACKPLANE:
1088 		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
1089 		ethtool_link_ksettings_add_link_mode(ks, supported, Backplane);
1090 		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
1091 		ethtool_link_ksettings_add_link_mode(ks, advertising,
1092 						     Backplane);
1093 		ks->base.port = PORT_NONE;
1094 		break;
1095 	case I40E_MEDIA_TYPE_BASET:
1096 		ethtool_link_ksettings_add_link_mode(ks, supported, TP);
1097 		ethtool_link_ksettings_add_link_mode(ks, advertising, TP);
1098 		ks->base.port = PORT_TP;
1099 		break;
1100 	case I40E_MEDIA_TYPE_DA:
1101 	case I40E_MEDIA_TYPE_CX4:
1102 		ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1103 		ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1104 		ks->base.port = PORT_DA;
1105 		break;
1106 	case I40E_MEDIA_TYPE_FIBER:
1107 		ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1108 		ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1109 		ks->base.port = PORT_FIBRE;
1110 		break;
1111 	case I40E_MEDIA_TYPE_UNKNOWN:
1112 	default:
1113 		ks->base.port = PORT_OTHER;
1114 		break;
1115 	}
1116 
1117 	/* Set flow control settings */
1118 	ethtool_link_ksettings_add_link_mode(ks, supported, Pause);
1119 	ethtool_link_ksettings_add_link_mode(ks, supported, Asym_Pause);
1120 
1121 	switch (hw->fc.requested_mode) {
1122 	case I40E_FC_FULL:
1123 		ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1124 		break;
1125 	case I40E_FC_TX_PAUSE:
1126 		ethtool_link_ksettings_add_link_mode(ks, advertising,
1127 						     Asym_Pause);
1128 		break;
1129 	case I40E_FC_RX_PAUSE:
1130 		ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1131 		ethtool_link_ksettings_add_link_mode(ks, advertising,
1132 						     Asym_Pause);
1133 		break;
1134 	default:
1135 		ethtool_link_ksettings_del_link_mode(ks, advertising, Pause);
1136 		ethtool_link_ksettings_del_link_mode(ks, advertising,
1137 						     Asym_Pause);
1138 		break;
1139 	}
1140 
1141 	return 0;
1142 }
1143 
1144 /**
1145  * i40e_set_link_ksettings - Set Speed and Duplex
1146  * @netdev: network interface device structure
1147  * @ks: ethtool ksettings
1148  *
1149  * Set speed/duplex per media_types advertised/forced
1150  **/
i40e_set_link_ksettings(struct net_device * netdev,const struct ethtool_link_ksettings * ks)1151 static int i40e_set_link_ksettings(struct net_device *netdev,
1152 				   const struct ethtool_link_ksettings *ks)
1153 {
1154 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1155 	struct i40e_aq_get_phy_abilities_resp abilities;
1156 	struct ethtool_link_ksettings safe_ks;
1157 	struct ethtool_link_ksettings copy_ks;
1158 	struct i40e_aq_set_phy_config config;
1159 	struct i40e_pf *pf = np->vsi->back;
1160 	struct i40e_vsi *vsi = np->vsi;
1161 	struct i40e_hw *hw = &pf->hw;
1162 	bool autoneg_changed = false;
1163 	i40e_status status = 0;
1164 	int timeout = 50;
1165 	int err = 0;
1166 	u8 autoneg;
1167 
1168 	/* Changing port settings is not supported if this isn't the
1169 	 * port's controlling PF
1170 	 */
1171 	if (hw->partition_id != 1) {
1172 		i40e_partition_setting_complaint(pf);
1173 		return -EOPNOTSUPP;
1174 	}
1175 	if (vsi != pf->vsi[pf->lan_vsi])
1176 		return -EOPNOTSUPP;
1177 	if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET &&
1178 	    hw->phy.media_type != I40E_MEDIA_TYPE_FIBER &&
1179 	    hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE &&
1180 	    hw->phy.media_type != I40E_MEDIA_TYPE_DA &&
1181 	    hw->phy.link_info.link_info & I40E_AQ_LINK_UP)
1182 		return -EOPNOTSUPP;
1183 	if (hw->device_id == I40E_DEV_ID_KX_B ||
1184 	    hw->device_id == I40E_DEV_ID_KX_C ||
1185 	    hw->device_id == I40E_DEV_ID_20G_KR2 ||
1186 	    hw->device_id == I40E_DEV_ID_20G_KR2_A ||
1187 	    hw->device_id == I40E_DEV_ID_25G_B ||
1188 	    hw->device_id == I40E_DEV_ID_KX_X722) {
1189 		netdev_info(netdev, "Changing settings is not supported on backplane.\n");
1190 		return -EOPNOTSUPP;
1191 	}
1192 
1193 	/* copy the ksettings to copy_ks to avoid modifying the origin */
1194 	memcpy(&copy_ks, ks, sizeof(struct ethtool_link_ksettings));
1195 
1196 	/* save autoneg out of ksettings */
1197 	autoneg = copy_ks.base.autoneg;
1198 
1199 	/* get our own copy of the bits to check against */
1200 	memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings));
1201 	safe_ks.base.cmd = copy_ks.base.cmd;
1202 	safe_ks.base.link_mode_masks_nwords =
1203 		copy_ks.base.link_mode_masks_nwords;
1204 	i40e_get_link_ksettings(netdev, &safe_ks);
1205 
1206 	/* Get link modes supported by hardware and check against modes
1207 	 * requested by the user.  Return an error if unsupported mode was set.
1208 	 */
1209 	if (!bitmap_subset(copy_ks.link_modes.advertising,
1210 			   safe_ks.link_modes.supported,
1211 			   __ETHTOOL_LINK_MODE_MASK_NBITS))
1212 		return -EINVAL;
1213 
1214 	/* set autoneg back to what it currently is */
1215 	copy_ks.base.autoneg = safe_ks.base.autoneg;
1216 
1217 	/* If copy_ks.base and safe_ks.base are not the same now, then they are
1218 	 * trying to set something that we do not support.
1219 	 */
1220 	if (memcmp(&copy_ks.base, &safe_ks.base,
1221 		   sizeof(struct ethtool_link_settings)))
1222 		return -EOPNOTSUPP;
1223 
1224 	while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1225 		timeout--;
1226 		if (!timeout)
1227 			return -EBUSY;
1228 		usleep_range(1000, 2000);
1229 	}
1230 
1231 	/* Get the current phy config */
1232 	status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1233 					      NULL);
1234 	if (status) {
1235 		err = -EAGAIN;
1236 		goto done;
1237 	}
1238 
1239 	/* Copy abilities to config in case autoneg is not
1240 	 * set below
1241 	 */
1242 	memset(&config, 0, sizeof(struct i40e_aq_set_phy_config));
1243 	config.abilities = abilities.abilities;
1244 
1245 	/* Check autoneg */
1246 	if (autoneg == AUTONEG_ENABLE) {
1247 		/* If autoneg was not already enabled */
1248 		if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) {
1249 			/* If autoneg is not supported, return error */
1250 			if (!ethtool_link_ksettings_test_link_mode(&safe_ks,
1251 								   supported,
1252 								   Autoneg)) {
1253 				netdev_info(netdev, "Autoneg not supported on this phy\n");
1254 				err = -EINVAL;
1255 				goto done;
1256 			}
1257 			/* Autoneg is allowed to change */
1258 			config.abilities = abilities.abilities |
1259 					   I40E_AQ_PHY_ENABLE_AN;
1260 			autoneg_changed = true;
1261 		}
1262 	} else {
1263 		/* If autoneg is currently enabled */
1264 		if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) {
1265 			/* If autoneg is supported 10GBASE_T is the only PHY
1266 			 * that can disable it, so otherwise return error
1267 			 */
1268 			if (ethtool_link_ksettings_test_link_mode(&safe_ks,
1269 								  supported,
1270 								  Autoneg) &&
1271 			    hw->phy.media_type != I40E_MEDIA_TYPE_BASET) {
1272 				netdev_info(netdev, "Autoneg cannot be disabled on this phy\n");
1273 				err = -EINVAL;
1274 				goto done;
1275 			}
1276 			/* Autoneg is allowed to change */
1277 			config.abilities = abilities.abilities &
1278 					   ~I40E_AQ_PHY_ENABLE_AN;
1279 			autoneg_changed = true;
1280 		}
1281 	}
1282 
1283 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1284 						  100baseT_Full))
1285 		config.link_speed |= I40E_LINK_SPEED_100MB;
1286 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1287 						  1000baseT_Full) ||
1288 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1289 						  1000baseX_Full) ||
1290 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1291 						  1000baseKX_Full))
1292 		config.link_speed |= I40E_LINK_SPEED_1GB;
1293 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1294 						  10000baseT_Full) ||
1295 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1296 						  10000baseKX4_Full) ||
1297 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1298 						  10000baseKR_Full) ||
1299 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1300 						  10000baseCR_Full) ||
1301 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1302 						  10000baseSR_Full) ||
1303 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1304 						  10000baseLR_Full))
1305 		config.link_speed |= I40E_LINK_SPEED_10GB;
1306 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1307 						  2500baseT_Full))
1308 		config.link_speed |= I40E_LINK_SPEED_2_5GB;
1309 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1310 						  5000baseT_Full))
1311 		config.link_speed |= I40E_LINK_SPEED_5GB;
1312 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1313 						  20000baseKR2_Full))
1314 		config.link_speed |= I40E_LINK_SPEED_20GB;
1315 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1316 						  25000baseCR_Full) ||
1317 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1318 						  25000baseKR_Full) ||
1319 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1320 						  25000baseSR_Full))
1321 		config.link_speed |= I40E_LINK_SPEED_25GB;
1322 	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1323 						  40000baseKR4_Full) ||
1324 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1325 						  40000baseCR4_Full) ||
1326 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1327 						  40000baseSR4_Full) ||
1328 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
1329 						  40000baseLR4_Full))
1330 		config.link_speed |= I40E_LINK_SPEED_40GB;
1331 
1332 	/* If speed didn't get set, set it to what it currently is.
1333 	 * This is needed because if advertise is 0 (as it is when autoneg
1334 	 * is disabled) then speed won't get set.
1335 	 */
1336 	if (!config.link_speed)
1337 		config.link_speed = abilities.link_speed;
1338 	if (autoneg_changed || abilities.link_speed != config.link_speed) {
1339 		/* copy over the rest of the abilities */
1340 		config.phy_type = abilities.phy_type;
1341 		config.phy_type_ext = abilities.phy_type_ext;
1342 		config.eee_capability = abilities.eee_capability;
1343 		config.eeer = abilities.eeer_val;
1344 		config.low_power_ctrl = abilities.d3_lpan;
1345 		config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
1346 				    I40E_AQ_PHY_FEC_CONFIG_MASK;
1347 
1348 		/* save the requested speeds */
1349 		hw->phy.link_info.requested_speeds = config.link_speed;
1350 		/* set link and auto negotiation so changes take effect */
1351 		config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1352 		/* If link is up put link down */
1353 		if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) {
1354 			/* Tell the OS link is going down, the link will go
1355 			 * back up when fw says it is ready asynchronously
1356 			 */
1357 			i40e_print_link_message(vsi, false);
1358 			netif_carrier_off(netdev);
1359 			netif_tx_stop_all_queues(netdev);
1360 		}
1361 
1362 		/* make the aq call */
1363 		status = i40e_aq_set_phy_config(hw, &config, NULL);
1364 		if (status) {
1365 			netdev_info(netdev,
1366 				    "Set phy config failed, err %s aq_err %s\n",
1367 				    i40e_stat_str(hw, status),
1368 				    i40e_aq_str(hw, hw->aq.asq_last_status));
1369 			err = -EAGAIN;
1370 			goto done;
1371 		}
1372 
1373 		status = i40e_update_link_info(hw);
1374 		if (status)
1375 			netdev_dbg(netdev,
1376 				   "Updating link info failed with err %s aq_err %s\n",
1377 				   i40e_stat_str(hw, status),
1378 				   i40e_aq_str(hw, hw->aq.asq_last_status));
1379 
1380 	} else {
1381 		netdev_info(netdev, "Nothing changed, exiting without setting anything.\n");
1382 	}
1383 
1384 done:
1385 	clear_bit(__I40E_CONFIG_BUSY, pf->state);
1386 
1387 	return err;
1388 }
1389 
i40e_set_fec_cfg(struct net_device * netdev,u8 fec_cfg)1390 static int i40e_set_fec_cfg(struct net_device *netdev, u8 fec_cfg)
1391 {
1392 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1393 	struct i40e_aq_get_phy_abilities_resp abilities;
1394 	struct i40e_pf *pf = np->vsi->back;
1395 	struct i40e_hw *hw = &pf->hw;
1396 	i40e_status status = 0;
1397 	u32 flags = 0;
1398 	int err = 0;
1399 
1400 	flags = READ_ONCE(pf->flags);
1401 	i40e_set_fec_in_flags(fec_cfg, &flags);
1402 
1403 	/* Get the current phy config */
1404 	memset(&abilities, 0, sizeof(abilities));
1405 	status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1406 					      NULL);
1407 	if (status) {
1408 		err = -EAGAIN;
1409 		goto done;
1410 	}
1411 
1412 	if (abilities.fec_cfg_curr_mod_ext_info != fec_cfg) {
1413 		struct i40e_aq_set_phy_config config;
1414 
1415 		memset(&config, 0, sizeof(config));
1416 		config.phy_type = abilities.phy_type;
1417 		config.abilities = abilities.abilities |
1418 				   I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1419 		config.phy_type_ext = abilities.phy_type_ext;
1420 		config.link_speed = abilities.link_speed;
1421 		config.eee_capability = abilities.eee_capability;
1422 		config.eeer = abilities.eeer_val;
1423 		config.low_power_ctrl = abilities.d3_lpan;
1424 		config.fec_config = fec_cfg & I40E_AQ_PHY_FEC_CONFIG_MASK;
1425 		status = i40e_aq_set_phy_config(hw, &config, NULL);
1426 		if (status) {
1427 			netdev_info(netdev,
1428 				    "Set phy config failed, err %s aq_err %s\n",
1429 				    i40e_stat_str(hw, status),
1430 				    i40e_aq_str(hw, hw->aq.asq_last_status));
1431 			err = -EAGAIN;
1432 			goto done;
1433 		}
1434 		pf->flags = flags;
1435 		status = i40e_update_link_info(hw);
1436 		if (status)
1437 			/* debug level message only due to relation to the link
1438 			 * itself rather than to the FEC settings
1439 			 * (e.g. no physical connection etc.)
1440 			 */
1441 			netdev_dbg(netdev,
1442 				   "Updating link info failed with err %s aq_err %s\n",
1443 				   i40e_stat_str(hw, status),
1444 				   i40e_aq_str(hw, hw->aq.asq_last_status));
1445 	}
1446 
1447 done:
1448 	return err;
1449 }
1450 
i40e_get_fec_param(struct net_device * netdev,struct ethtool_fecparam * fecparam)1451 static int i40e_get_fec_param(struct net_device *netdev,
1452 			      struct ethtool_fecparam *fecparam)
1453 {
1454 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1455 	struct i40e_aq_get_phy_abilities_resp abilities;
1456 	struct i40e_pf *pf = np->vsi->back;
1457 	struct i40e_hw *hw = &pf->hw;
1458 	i40e_status status = 0;
1459 	int err = 0;
1460 	u8 fec_cfg;
1461 
1462 	/* Get the current phy config */
1463 	memset(&abilities, 0, sizeof(abilities));
1464 	status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1465 					      NULL);
1466 	if (status) {
1467 		err = -EAGAIN;
1468 		goto done;
1469 	}
1470 
1471 	fecparam->fec = 0;
1472 	fec_cfg = abilities.fec_cfg_curr_mod_ext_info;
1473 	if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
1474 		fecparam->fec |= ETHTOOL_FEC_AUTO;
1475 	else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_RS |
1476 		 I40E_AQ_SET_FEC_ABILITY_RS))
1477 		fecparam->fec |= ETHTOOL_FEC_RS;
1478 	else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_KR |
1479 		 I40E_AQ_SET_FEC_ABILITY_KR))
1480 		fecparam->fec |= ETHTOOL_FEC_BASER;
1481 	if (fec_cfg == 0)
1482 		fecparam->fec |= ETHTOOL_FEC_OFF;
1483 
1484 	if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_KR_ENA)
1485 		fecparam->active_fec = ETHTOOL_FEC_BASER;
1486 	else if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_RS_ENA)
1487 		fecparam->active_fec = ETHTOOL_FEC_RS;
1488 	else
1489 		fecparam->active_fec = ETHTOOL_FEC_OFF;
1490 done:
1491 	return err;
1492 }
1493 
i40e_set_fec_param(struct net_device * netdev,struct ethtool_fecparam * fecparam)1494 static int i40e_set_fec_param(struct net_device *netdev,
1495 			      struct ethtool_fecparam *fecparam)
1496 {
1497 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1498 	struct i40e_pf *pf = np->vsi->back;
1499 	struct i40e_hw *hw = &pf->hw;
1500 	u8 fec_cfg = 0;
1501 
1502 	if (hw->device_id != I40E_DEV_ID_25G_SFP28 &&
1503 	    hw->device_id != I40E_DEV_ID_25G_B &&
1504 	    hw->device_id != I40E_DEV_ID_KX_X722)
1505 		return -EPERM;
1506 
1507 	if (hw->mac.type == I40E_MAC_X722 &&
1508 	    !(hw->flags & I40E_HW_FLAG_X722_FEC_REQUEST_CAPABLE)) {
1509 		netdev_err(netdev, "Setting FEC encoding not supported by firmware. Please update the NVM image.\n");
1510 		return -EOPNOTSUPP;
1511 	}
1512 
1513 	switch (fecparam->fec) {
1514 	case ETHTOOL_FEC_AUTO:
1515 		fec_cfg = I40E_AQ_SET_FEC_AUTO;
1516 		break;
1517 	case ETHTOOL_FEC_RS:
1518 		fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
1519 			     I40E_AQ_SET_FEC_ABILITY_RS);
1520 		break;
1521 	case ETHTOOL_FEC_BASER:
1522 		fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
1523 			     I40E_AQ_SET_FEC_ABILITY_KR);
1524 		break;
1525 	case ETHTOOL_FEC_OFF:
1526 	case ETHTOOL_FEC_NONE:
1527 		fec_cfg = 0;
1528 		break;
1529 	default:
1530 		dev_warn(&pf->pdev->dev, "Unsupported FEC mode: %d",
1531 			 fecparam->fec);
1532 		return -EINVAL;
1533 	}
1534 
1535 	return i40e_set_fec_cfg(netdev, fec_cfg);
1536 }
1537 
i40e_nway_reset(struct net_device * netdev)1538 static int i40e_nway_reset(struct net_device *netdev)
1539 {
1540 	/* restart autonegotiation */
1541 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1542 	struct i40e_pf *pf = np->vsi->back;
1543 	struct i40e_hw *hw = &pf->hw;
1544 	bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP;
1545 	i40e_status ret = 0;
1546 
1547 	ret = i40e_aq_set_link_restart_an(hw, link_up, NULL);
1548 	if (ret) {
1549 		netdev_info(netdev, "link restart failed, err %s aq_err %s\n",
1550 			    i40e_stat_str(hw, ret),
1551 			    i40e_aq_str(hw, hw->aq.asq_last_status));
1552 		return -EIO;
1553 	}
1554 
1555 	return 0;
1556 }
1557 
1558 /**
1559  * i40e_get_pauseparam -  Get Flow Control status
1560  * @netdev: netdevice structure
1561  * @pause: buffer to return pause parameters
1562  *
1563  * Return tx/rx-pause status
1564  **/
i40e_get_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)1565 static void i40e_get_pauseparam(struct net_device *netdev,
1566 				struct ethtool_pauseparam *pause)
1567 {
1568 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1569 	struct i40e_pf *pf = np->vsi->back;
1570 	struct i40e_hw *hw = &pf->hw;
1571 	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1572 	struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1573 
1574 	pause->autoneg =
1575 		((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1576 		  AUTONEG_ENABLE : AUTONEG_DISABLE);
1577 
1578 	/* PFC enabled so report LFC as off */
1579 	if (dcbx_cfg->pfc.pfcenable) {
1580 		pause->rx_pause = 0;
1581 		pause->tx_pause = 0;
1582 		return;
1583 	}
1584 
1585 	if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
1586 		pause->rx_pause = 1;
1587 	} else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
1588 		pause->tx_pause = 1;
1589 	} else if (hw->fc.current_mode == I40E_FC_FULL) {
1590 		pause->rx_pause = 1;
1591 		pause->tx_pause = 1;
1592 	}
1593 }
1594 
1595 /**
1596  * i40e_set_pauseparam - Set Flow Control parameter
1597  * @netdev: network interface device structure
1598  * @pause: return tx/rx flow control status
1599  **/
i40e_set_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)1600 static int i40e_set_pauseparam(struct net_device *netdev,
1601 			       struct ethtool_pauseparam *pause)
1602 {
1603 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1604 	struct i40e_pf *pf = np->vsi->back;
1605 	struct i40e_vsi *vsi = np->vsi;
1606 	struct i40e_hw *hw = &pf->hw;
1607 	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1608 	struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1609 	bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1610 	i40e_status status;
1611 	u8 aq_failures;
1612 	int err = 0;
1613 	u32 is_an;
1614 
1615 	/* Changing the port's flow control is not supported if this isn't the
1616 	 * port's controlling PF
1617 	 */
1618 	if (hw->partition_id != 1) {
1619 		i40e_partition_setting_complaint(pf);
1620 		return -EOPNOTSUPP;
1621 	}
1622 
1623 	if (vsi != pf->vsi[pf->lan_vsi])
1624 		return -EOPNOTSUPP;
1625 
1626 	is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED;
1627 	if (pause->autoneg != is_an) {
1628 		netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n");
1629 		return -EOPNOTSUPP;
1630 	}
1631 
1632 	/* If we have link and don't have autoneg */
1633 	if (!test_bit(__I40E_DOWN, pf->state) && !is_an) {
1634 		/* Send message that it might not necessarily work*/
1635 		netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n");
1636 	}
1637 
1638 	if (dcbx_cfg->pfc.pfcenable) {
1639 		netdev_info(netdev,
1640 			    "Priority flow control enabled. Cannot set link flow control.\n");
1641 		return -EOPNOTSUPP;
1642 	}
1643 
1644 	if (pause->rx_pause && pause->tx_pause)
1645 		hw->fc.requested_mode = I40E_FC_FULL;
1646 	else if (pause->rx_pause && !pause->tx_pause)
1647 		hw->fc.requested_mode = I40E_FC_RX_PAUSE;
1648 	else if (!pause->rx_pause && pause->tx_pause)
1649 		hw->fc.requested_mode = I40E_FC_TX_PAUSE;
1650 	else if (!pause->rx_pause && !pause->tx_pause)
1651 		hw->fc.requested_mode = I40E_FC_NONE;
1652 	else
1653 		return -EINVAL;
1654 
1655 	/* Tell the OS link is going down, the link will go back up when fw
1656 	 * says it is ready asynchronously
1657 	 */
1658 	i40e_print_link_message(vsi, false);
1659 	netif_carrier_off(netdev);
1660 	netif_tx_stop_all_queues(netdev);
1661 
1662 	/* Set the fc mode and only restart an if link is up*/
1663 	status = i40e_set_fc(hw, &aq_failures, link_up);
1664 
1665 	if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) {
1666 		netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %s aq_err %s\n",
1667 			    i40e_stat_str(hw, status),
1668 			    i40e_aq_str(hw, hw->aq.asq_last_status));
1669 		err = -EAGAIN;
1670 	}
1671 	if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) {
1672 		netdev_info(netdev, "Set fc failed on the set_phy_config call with err %s aq_err %s\n",
1673 			    i40e_stat_str(hw, status),
1674 			    i40e_aq_str(hw, hw->aq.asq_last_status));
1675 		err = -EAGAIN;
1676 	}
1677 	if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) {
1678 		netdev_info(netdev, "Set fc failed on the get_link_info call with err %s aq_err %s\n",
1679 			    i40e_stat_str(hw, status),
1680 			    i40e_aq_str(hw, hw->aq.asq_last_status));
1681 		err = -EAGAIN;
1682 	}
1683 
1684 	if (!test_bit(__I40E_DOWN, pf->state) && is_an) {
1685 		/* Give it a little more time to try to come back */
1686 		msleep(75);
1687 		if (!test_bit(__I40E_DOWN, pf->state))
1688 			return i40e_nway_reset(netdev);
1689 	}
1690 
1691 	return err;
1692 }
1693 
i40e_get_msglevel(struct net_device * netdev)1694 static u32 i40e_get_msglevel(struct net_device *netdev)
1695 {
1696 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1697 	struct i40e_pf *pf = np->vsi->back;
1698 	u32 debug_mask = pf->hw.debug_mask;
1699 
1700 	if (debug_mask)
1701 		netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask);
1702 
1703 	return pf->msg_enable;
1704 }
1705 
i40e_set_msglevel(struct net_device * netdev,u32 data)1706 static void i40e_set_msglevel(struct net_device *netdev, u32 data)
1707 {
1708 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1709 	struct i40e_pf *pf = np->vsi->back;
1710 
1711 	if (I40E_DEBUG_USER & data)
1712 		pf->hw.debug_mask = data;
1713 	else
1714 		pf->msg_enable = data;
1715 }
1716 
i40e_get_regs_len(struct net_device * netdev)1717 static int i40e_get_regs_len(struct net_device *netdev)
1718 {
1719 	int reg_count = 0;
1720 	int i;
1721 
1722 	for (i = 0; i40e_reg_list[i].offset != 0; i++)
1723 		reg_count += i40e_reg_list[i].elements;
1724 
1725 	return reg_count * sizeof(u32);
1726 }
1727 
i40e_get_regs(struct net_device * netdev,struct ethtool_regs * regs,void * p)1728 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
1729 			  void *p)
1730 {
1731 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1732 	struct i40e_pf *pf = np->vsi->back;
1733 	struct i40e_hw *hw = &pf->hw;
1734 	u32 *reg_buf = p;
1735 	unsigned int i, j, ri;
1736 	u32 reg;
1737 
1738 	/* Tell ethtool which driver-version-specific regs output we have.
1739 	 *
1740 	 * At some point, if we have ethtool doing special formatting of
1741 	 * this data, it will rely on this version number to know how to
1742 	 * interpret things.  Hence, this needs to be updated if/when the
1743 	 * diags register table is changed.
1744 	 */
1745 	regs->version = 1;
1746 
1747 	/* loop through the diags reg table for what to print */
1748 	ri = 0;
1749 	for (i = 0; i40e_reg_list[i].offset != 0; i++) {
1750 		for (j = 0; j < i40e_reg_list[i].elements; j++) {
1751 			reg = i40e_reg_list[i].offset
1752 				+ (j * i40e_reg_list[i].stride);
1753 			reg_buf[ri++] = rd32(hw, reg);
1754 		}
1755 	}
1756 
1757 }
1758 
i40e_get_eeprom(struct net_device * netdev,struct ethtool_eeprom * eeprom,u8 * bytes)1759 static int i40e_get_eeprom(struct net_device *netdev,
1760 			   struct ethtool_eeprom *eeprom, u8 *bytes)
1761 {
1762 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1763 	struct i40e_hw *hw = &np->vsi->back->hw;
1764 	struct i40e_pf *pf = np->vsi->back;
1765 	int ret_val = 0, len, offset;
1766 	u8 *eeprom_buff;
1767 	u16 i, sectors;
1768 	bool last;
1769 	u32 magic;
1770 
1771 #define I40E_NVM_SECTOR_SIZE  4096
1772 	if (eeprom->len == 0)
1773 		return -EINVAL;
1774 
1775 	/* check for NVMUpdate access method */
1776 	magic = hw->vendor_id | (hw->device_id << 16);
1777 	if (eeprom->magic && eeprom->magic != magic) {
1778 		struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1779 		int errno = 0;
1780 
1781 		/* make sure it is the right magic for NVMUpdate */
1782 		if ((eeprom->magic >> 16) != hw->device_id)
1783 			errno = -EINVAL;
1784 		else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1785 			 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1786 			errno = -EBUSY;
1787 		else
1788 			ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1789 
1790 		if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1791 			dev_info(&pf->pdev->dev,
1792 				 "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1793 				 ret_val, hw->aq.asq_last_status, errno,
1794 				 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1795 				 cmd->offset, cmd->data_size);
1796 
1797 		return errno;
1798 	}
1799 
1800 	/* normal ethtool get_eeprom support */
1801 	eeprom->magic = hw->vendor_id | (hw->device_id << 16);
1802 
1803 	eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
1804 	if (!eeprom_buff)
1805 		return -ENOMEM;
1806 
1807 	ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1808 	if (ret_val) {
1809 		dev_info(&pf->pdev->dev,
1810 			 "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
1811 			 ret_val, hw->aq.asq_last_status);
1812 		goto free_buff;
1813 	}
1814 
1815 	sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
1816 	sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
1817 	len = I40E_NVM_SECTOR_SIZE;
1818 	last = false;
1819 	for (i = 0; i < sectors; i++) {
1820 		if (i == (sectors - 1)) {
1821 			len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
1822 			last = true;
1823 		}
1824 		offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
1825 		ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len,
1826 				(u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
1827 				last, NULL);
1828 		if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
1829 			dev_info(&pf->pdev->dev,
1830 				 "read NVM failed, invalid offset 0x%x\n",
1831 				 offset);
1832 			break;
1833 		} else if (ret_val &&
1834 			   hw->aq.asq_last_status == I40E_AQ_RC_EACCES) {
1835 			dev_info(&pf->pdev->dev,
1836 				 "read NVM failed, access, offset 0x%x\n",
1837 				 offset);
1838 			break;
1839 		} else if (ret_val) {
1840 			dev_info(&pf->pdev->dev,
1841 				 "read NVM failed offset %d err=%d status=0x%x\n",
1842 				 offset, ret_val, hw->aq.asq_last_status);
1843 			break;
1844 		}
1845 	}
1846 
1847 	i40e_release_nvm(hw);
1848 	memcpy(bytes, (u8 *)eeprom_buff, eeprom->len);
1849 free_buff:
1850 	kfree(eeprom_buff);
1851 	return ret_val;
1852 }
1853 
i40e_get_eeprom_len(struct net_device * netdev)1854 static int i40e_get_eeprom_len(struct net_device *netdev)
1855 {
1856 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1857 	struct i40e_hw *hw = &np->vsi->back->hw;
1858 	u32 val;
1859 
1860 #define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF
1861 	if (hw->mac.type == I40E_MAC_X722) {
1862 		val = X722_EEPROM_SCOPE_LIMIT + 1;
1863 		return val;
1864 	}
1865 	val = (rd32(hw, I40E_GLPCI_LBARCTRL)
1866 		& I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
1867 		>> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
1868 	/* register returns value in power of 2, 64Kbyte chunks. */
1869 	val = (64 * 1024) * BIT(val);
1870 	return val;
1871 }
1872 
i40e_set_eeprom(struct net_device * netdev,struct ethtool_eeprom * eeprom,u8 * bytes)1873 static int i40e_set_eeprom(struct net_device *netdev,
1874 			   struct ethtool_eeprom *eeprom, u8 *bytes)
1875 {
1876 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1877 	struct i40e_hw *hw = &np->vsi->back->hw;
1878 	struct i40e_pf *pf = np->vsi->back;
1879 	struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1880 	int ret_val = 0;
1881 	int errno = 0;
1882 	u32 magic;
1883 
1884 	/* normal ethtool set_eeprom is not supported */
1885 	magic = hw->vendor_id | (hw->device_id << 16);
1886 	if (eeprom->magic == magic)
1887 		errno = -EOPNOTSUPP;
1888 	/* check for NVMUpdate access method */
1889 	else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id)
1890 		errno = -EINVAL;
1891 	else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1892 		 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1893 		errno = -EBUSY;
1894 	else
1895 		ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1896 
1897 	if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1898 		dev_info(&pf->pdev->dev,
1899 			 "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1900 			 ret_val, hw->aq.asq_last_status, errno,
1901 			 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1902 			 cmd->offset, cmd->data_size);
1903 
1904 	return errno;
1905 }
1906 
i40e_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)1907 static void i40e_get_drvinfo(struct net_device *netdev,
1908 			     struct ethtool_drvinfo *drvinfo)
1909 {
1910 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1911 	struct i40e_vsi *vsi = np->vsi;
1912 	struct i40e_pf *pf = vsi->back;
1913 
1914 	strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
1915 	strlcpy(drvinfo->fw_version, i40e_nvm_version_str(&pf->hw),
1916 		sizeof(drvinfo->fw_version));
1917 	strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
1918 		sizeof(drvinfo->bus_info));
1919 	drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN;
1920 	if (pf->hw.pf_id == 0)
1921 		drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN;
1922 }
1923 
i40e_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)1924 static void i40e_get_ringparam(struct net_device *netdev,
1925 			       struct ethtool_ringparam *ring,
1926 			       struct kernel_ethtool_ringparam *kernel_ring,
1927 			       struct netlink_ext_ack *extack)
1928 {
1929 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1930 	struct i40e_pf *pf = np->vsi->back;
1931 	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
1932 
1933 	ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1934 	ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1935 	ring->rx_mini_max_pending = 0;
1936 	ring->rx_jumbo_max_pending = 0;
1937 	ring->rx_pending = vsi->rx_rings[0]->count;
1938 	ring->tx_pending = vsi->tx_rings[0]->count;
1939 	ring->rx_mini_pending = 0;
1940 	ring->rx_jumbo_pending = 0;
1941 }
1942 
i40e_active_tx_ring_index(struct i40e_vsi * vsi,u16 index)1943 static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index)
1944 {
1945 	if (i40e_enabled_xdp_vsi(vsi)) {
1946 		return index < vsi->num_queue_pairs ||
1947 			(index >= vsi->alloc_queue_pairs &&
1948 			 index < vsi->alloc_queue_pairs + vsi->num_queue_pairs);
1949 	}
1950 
1951 	return index < vsi->num_queue_pairs;
1952 }
1953 
i40e_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)1954 static int i40e_set_ringparam(struct net_device *netdev,
1955 			      struct ethtool_ringparam *ring,
1956 			      struct kernel_ethtool_ringparam *kernel_ring,
1957 			      struct netlink_ext_ack *extack)
1958 {
1959 	struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
1960 	struct i40e_netdev_priv *np = netdev_priv(netdev);
1961 	struct i40e_hw *hw = &np->vsi->back->hw;
1962 	struct i40e_vsi *vsi = np->vsi;
1963 	struct i40e_pf *pf = vsi->back;
1964 	u32 new_rx_count, new_tx_count;
1965 	u16 tx_alloc_queue_pairs;
1966 	int timeout = 50;
1967 	int i, err = 0;
1968 
1969 	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
1970 		return -EINVAL;
1971 
1972 	if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1973 	    ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
1974 	    ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1975 	    ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
1976 		netdev_info(netdev,
1977 			    "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
1978 			    ring->tx_pending, ring->rx_pending,
1979 			    I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
1980 		return -EINVAL;
1981 	}
1982 
1983 	new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1984 	new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1985 
1986 	/* if nothing to do return success */
1987 	if ((new_tx_count == vsi->tx_rings[0]->count) &&
1988 	    (new_rx_count == vsi->rx_rings[0]->count))
1989 		return 0;
1990 
1991 	/* If there is a AF_XDP page pool attached to any of Rx rings,
1992 	 * disallow changing the number of descriptors -- regardless
1993 	 * if the netdev is running or not.
1994 	 */
1995 	if (i40e_xsk_any_rx_ring_enabled(vsi))
1996 		return -EBUSY;
1997 
1998 	while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1999 		timeout--;
2000 		if (!timeout)
2001 			return -EBUSY;
2002 		usleep_range(1000, 2000);
2003 	}
2004 
2005 	if (!netif_running(vsi->netdev)) {
2006 		/* simple case - set for the next time the netdev is started */
2007 		for (i = 0; i < vsi->num_queue_pairs; i++) {
2008 			vsi->tx_rings[i]->count = new_tx_count;
2009 			vsi->rx_rings[i]->count = new_rx_count;
2010 			if (i40e_enabled_xdp_vsi(vsi))
2011 				vsi->xdp_rings[i]->count = new_tx_count;
2012 		}
2013 		vsi->num_tx_desc = new_tx_count;
2014 		vsi->num_rx_desc = new_rx_count;
2015 		goto done;
2016 	}
2017 
2018 	/* We can't just free everything and then setup again,
2019 	 * because the ISRs in MSI-X mode get passed pointers
2020 	 * to the Tx and Rx ring structs.
2021 	 */
2022 
2023 	/* alloc updated Tx and XDP Tx resources */
2024 	tx_alloc_queue_pairs = vsi->alloc_queue_pairs *
2025 			       (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
2026 	if (new_tx_count != vsi->tx_rings[0]->count) {
2027 		netdev_info(netdev,
2028 			    "Changing Tx descriptor count from %d to %d.\n",
2029 			    vsi->tx_rings[0]->count, new_tx_count);
2030 		tx_rings = kcalloc(tx_alloc_queue_pairs,
2031 				   sizeof(struct i40e_ring), GFP_KERNEL);
2032 		if (!tx_rings) {
2033 			err = -ENOMEM;
2034 			goto done;
2035 		}
2036 
2037 		for (i = 0; i < tx_alloc_queue_pairs; i++) {
2038 			if (!i40e_active_tx_ring_index(vsi, i))
2039 				continue;
2040 
2041 			tx_rings[i] = *vsi->tx_rings[i];
2042 			tx_rings[i].count = new_tx_count;
2043 			/* the desc and bi pointers will be reallocated in the
2044 			 * setup call
2045 			 */
2046 			tx_rings[i].desc = NULL;
2047 			tx_rings[i].rx_bi = NULL;
2048 			err = i40e_setup_tx_descriptors(&tx_rings[i]);
2049 			if (err) {
2050 				while (i) {
2051 					i--;
2052 					if (!i40e_active_tx_ring_index(vsi, i))
2053 						continue;
2054 					i40e_free_tx_resources(&tx_rings[i]);
2055 				}
2056 				kfree(tx_rings);
2057 				tx_rings = NULL;
2058 
2059 				goto done;
2060 			}
2061 		}
2062 	}
2063 
2064 	/* alloc updated Rx resources */
2065 	if (new_rx_count != vsi->rx_rings[0]->count) {
2066 		netdev_info(netdev,
2067 			    "Changing Rx descriptor count from %d to %d\n",
2068 			    vsi->rx_rings[0]->count, new_rx_count);
2069 		rx_rings = kcalloc(vsi->alloc_queue_pairs,
2070 				   sizeof(struct i40e_ring), GFP_KERNEL);
2071 		if (!rx_rings) {
2072 			err = -ENOMEM;
2073 			goto free_tx;
2074 		}
2075 
2076 		for (i = 0; i < vsi->num_queue_pairs; i++) {
2077 			u16 unused;
2078 
2079 			/* clone ring and setup updated count */
2080 			rx_rings[i] = *vsi->rx_rings[i];
2081 			rx_rings[i].count = new_rx_count;
2082 			/* the desc and bi pointers will be reallocated in the
2083 			 * setup call
2084 			 */
2085 			rx_rings[i].desc = NULL;
2086 			rx_rings[i].rx_bi = NULL;
2087 			/* Clear cloned XDP RX-queue info before setup call */
2088 			memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq));
2089 			/* this is to allow wr32 to have something to write to
2090 			 * during early allocation of Rx buffers
2091 			 */
2092 			rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS;
2093 			err = i40e_setup_rx_descriptors(&rx_rings[i]);
2094 			if (err)
2095 				goto rx_unwind;
2096 			err = i40e_alloc_rx_bi(&rx_rings[i]);
2097 			if (err)
2098 				goto rx_unwind;
2099 
2100 			/* now allocate the Rx buffers to make sure the OS
2101 			 * has enough memory, any failure here means abort
2102 			 */
2103 			unused = I40E_DESC_UNUSED(&rx_rings[i]);
2104 			err = i40e_alloc_rx_buffers(&rx_rings[i], unused);
2105 rx_unwind:
2106 			if (err) {
2107 				do {
2108 					i40e_free_rx_resources(&rx_rings[i]);
2109 				} while (i--);
2110 				kfree(rx_rings);
2111 				rx_rings = NULL;
2112 
2113 				goto free_tx;
2114 			}
2115 		}
2116 	}
2117 
2118 	/* Bring interface down, copy in the new ring info,
2119 	 * then restore the interface
2120 	 */
2121 	i40e_down(vsi);
2122 
2123 	if (tx_rings) {
2124 		for (i = 0; i < tx_alloc_queue_pairs; i++) {
2125 			if (i40e_active_tx_ring_index(vsi, i)) {
2126 				i40e_free_tx_resources(vsi->tx_rings[i]);
2127 				*vsi->tx_rings[i] = tx_rings[i];
2128 			}
2129 		}
2130 		kfree(tx_rings);
2131 		tx_rings = NULL;
2132 	}
2133 
2134 	if (rx_rings) {
2135 		for (i = 0; i < vsi->num_queue_pairs; i++) {
2136 			i40e_free_rx_resources(vsi->rx_rings[i]);
2137 			/* get the real tail offset */
2138 			rx_rings[i].tail = vsi->rx_rings[i]->tail;
2139 			/* this is to fake out the allocation routine
2140 			 * into thinking it has to realloc everything
2141 			 * but the recycling logic will let us re-use
2142 			 * the buffers allocated above
2143 			 */
2144 			rx_rings[i].next_to_use = 0;
2145 			rx_rings[i].next_to_clean = 0;
2146 			rx_rings[i].next_to_alloc = 0;
2147 			/* do a struct copy */
2148 			*vsi->rx_rings[i] = rx_rings[i];
2149 		}
2150 		kfree(rx_rings);
2151 		rx_rings = NULL;
2152 	}
2153 
2154 	vsi->num_tx_desc = new_tx_count;
2155 	vsi->num_rx_desc = new_rx_count;
2156 	i40e_up(vsi);
2157 
2158 free_tx:
2159 	/* error cleanup if the Rx allocations failed after getting Tx */
2160 	if (tx_rings) {
2161 		for (i = 0; i < tx_alloc_queue_pairs; i++) {
2162 			if (i40e_active_tx_ring_index(vsi, i))
2163 				i40e_free_tx_resources(vsi->tx_rings[i]);
2164 		}
2165 		kfree(tx_rings);
2166 		tx_rings = NULL;
2167 	}
2168 
2169 done:
2170 	clear_bit(__I40E_CONFIG_BUSY, pf->state);
2171 
2172 	return err;
2173 }
2174 
2175 /**
2176  * i40e_get_stats_count - return the stats count for a device
2177  * @netdev: the netdev to return the count for
2178  *
2179  * Returns the total number of statistics for this netdev. Note that even
2180  * though this is a function, it is required that the count for a specific
2181  * netdev must never change. Basing the count on static values such as the
2182  * maximum number of queues or the device type is ok. However, the API for
2183  * obtaining stats is *not* safe against changes based on non-static
2184  * values such as the *current* number of queues, or runtime flags.
2185  *
2186  * If a statistic is not always enabled, return it as part of the count
2187  * anyways, always return its string, and report its value as zero.
2188  **/
i40e_get_stats_count(struct net_device * netdev)2189 static int i40e_get_stats_count(struct net_device *netdev)
2190 {
2191 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2192 	struct i40e_vsi *vsi = np->vsi;
2193 	struct i40e_pf *pf = vsi->back;
2194 	int stats_len;
2195 
2196 	if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1)
2197 		stats_len = I40E_PF_STATS_LEN;
2198 	else
2199 		stats_len = I40E_VSI_STATS_LEN;
2200 
2201 	/* The number of stats reported for a given net_device must remain
2202 	 * constant throughout the life of that device.
2203 	 *
2204 	 * This is because the API for obtaining the size, strings, and stats
2205 	 * is spread out over three separate ethtool ioctls. There is no safe
2206 	 * way to lock the number of stats across these calls, so we must
2207 	 * assume that they will never change.
2208 	 *
2209 	 * Due to this, we report the maximum number of queues, even if not
2210 	 * every queue is currently configured. Since we always allocate
2211 	 * queues in pairs, we'll just use netdev->num_tx_queues * 2. This
2212 	 * works because the num_tx_queues is set at device creation and never
2213 	 * changes.
2214 	 */
2215 	stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues;
2216 
2217 	return stats_len;
2218 }
2219 
i40e_get_sset_count(struct net_device * netdev,int sset)2220 static int i40e_get_sset_count(struct net_device *netdev, int sset)
2221 {
2222 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2223 	struct i40e_vsi *vsi = np->vsi;
2224 	struct i40e_pf *pf = vsi->back;
2225 
2226 	switch (sset) {
2227 	case ETH_SS_TEST:
2228 		return I40E_TEST_LEN;
2229 	case ETH_SS_STATS:
2230 		return i40e_get_stats_count(netdev);
2231 	case ETH_SS_PRIV_FLAGS:
2232 		return I40E_PRIV_FLAGS_STR_LEN +
2233 			(pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0);
2234 	default:
2235 		return -EOPNOTSUPP;
2236 	}
2237 }
2238 
2239 /**
2240  * i40e_get_veb_tc_stats - copy VEB TC statistics to formatted structure
2241  * @tc: the TC statistics in VEB structure (veb->tc_stats)
2242  * @i: the index of traffic class in (veb->tc_stats) structure to copy
2243  *
2244  * Copy VEB TC statistics from structure of arrays (veb->tc_stats) to
2245  * one dimensional structure i40e_cp_veb_tc_stats.
2246  * Produce formatted i40e_cp_veb_tc_stats structure of the VEB TC
2247  * statistics for the given TC.
2248  **/
2249 static struct i40e_cp_veb_tc_stats
i40e_get_veb_tc_stats(struct i40e_veb_tc_stats * tc,unsigned int i)2250 i40e_get_veb_tc_stats(struct i40e_veb_tc_stats *tc, unsigned int i)
2251 {
2252 	struct i40e_cp_veb_tc_stats veb_tc = {
2253 		.tc_rx_packets = tc->tc_rx_packets[i],
2254 		.tc_rx_bytes = tc->tc_rx_bytes[i],
2255 		.tc_tx_packets = tc->tc_tx_packets[i],
2256 		.tc_tx_bytes = tc->tc_tx_bytes[i],
2257 	};
2258 
2259 	return veb_tc;
2260 }
2261 
2262 /**
2263  * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure
2264  * @pf: the PF device structure
2265  * @i: the priority value to copy
2266  *
2267  * The PFC stats are found as arrays in pf->stats, which is not easy to pass
2268  * into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure
2269  * of the PFC stats for the given priority.
2270  **/
2271 static inline struct i40e_pfc_stats
i40e_get_pfc_stats(struct i40e_pf * pf,unsigned int i)2272 i40e_get_pfc_stats(struct i40e_pf *pf, unsigned int i)
2273 {
2274 #define I40E_GET_PFC_STAT(stat, priority) \
2275 	.stat = pf->stats.stat[priority]
2276 
2277 	struct i40e_pfc_stats pfc = {
2278 		I40E_GET_PFC_STAT(priority_xon_rx, i),
2279 		I40E_GET_PFC_STAT(priority_xoff_rx, i),
2280 		I40E_GET_PFC_STAT(priority_xon_tx, i),
2281 		I40E_GET_PFC_STAT(priority_xoff_tx, i),
2282 		I40E_GET_PFC_STAT(priority_xon_2_xoff, i),
2283 	};
2284 	return pfc;
2285 }
2286 
2287 /**
2288  * i40e_get_ethtool_stats - copy stat values into supplied buffer
2289  * @netdev: the netdev to collect stats for
2290  * @stats: ethtool stats command structure
2291  * @data: ethtool supplied buffer
2292  *
2293  * Copy the stats values for this netdev into the buffer. Expects data to be
2294  * pre-allocated to the size returned by i40e_get_stats_count.. Note that all
2295  * statistics must be copied in a static order, and the count must not change
2296  * for a given netdev. See i40e_get_stats_count for more details.
2297  *
2298  * If a statistic is not currently valid (such as a disabled queue), this
2299  * function reports its value as zero.
2300  **/
i40e_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)2301 static void i40e_get_ethtool_stats(struct net_device *netdev,
2302 				   struct ethtool_stats *stats, u64 *data)
2303 {
2304 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2305 	struct i40e_vsi *vsi = np->vsi;
2306 	struct i40e_pf *pf = vsi->back;
2307 	struct i40e_veb *veb = NULL;
2308 	unsigned int i;
2309 	bool veb_stats;
2310 	u64 *p = data;
2311 
2312 	i40e_update_stats(vsi);
2313 
2314 	i40e_add_ethtool_stats(&data, i40e_get_vsi_stats_struct(vsi),
2315 			       i40e_gstrings_net_stats);
2316 
2317 	i40e_add_ethtool_stats(&data, vsi, i40e_gstrings_misc_stats);
2318 
2319 	rcu_read_lock();
2320 	for (i = 0; i < netdev->num_tx_queues; i++) {
2321 		i40e_add_queue_stats(&data, READ_ONCE(vsi->tx_rings[i]));
2322 		i40e_add_queue_stats(&data, READ_ONCE(vsi->rx_rings[i]));
2323 	}
2324 	rcu_read_unlock();
2325 
2326 	if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2327 		goto check_data_pointer;
2328 
2329 	veb_stats = ((pf->lan_veb != I40E_NO_VEB) &&
2330 		     (pf->lan_veb < I40E_MAX_VEB) &&
2331 		     (pf->flags & I40E_FLAG_VEB_STATS_ENABLED));
2332 
2333 	if (veb_stats) {
2334 		veb = pf->veb[pf->lan_veb];
2335 		i40e_update_veb_stats(veb);
2336 	}
2337 
2338 	/* If veb stats aren't enabled, pass NULL instead of the veb so that
2339 	 * we initialize stats to zero and update the data pointer
2340 	 * intelligently
2341 	 */
2342 	i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
2343 			       i40e_gstrings_veb_stats);
2344 
2345 	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2346 		if (veb_stats) {
2347 			struct i40e_cp_veb_tc_stats veb_tc =
2348 				i40e_get_veb_tc_stats(&veb->tc_stats, i);
2349 
2350 			i40e_add_ethtool_stats(&data, &veb_tc,
2351 					       i40e_gstrings_veb_tc_stats);
2352 		} else {
2353 			i40e_add_ethtool_stats(&data, NULL,
2354 					       i40e_gstrings_veb_tc_stats);
2355 		}
2356 
2357 	i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats);
2358 
2359 	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
2360 		struct i40e_pfc_stats pfc = i40e_get_pfc_stats(pf, i);
2361 
2362 		i40e_add_ethtool_stats(&data, &pfc, i40e_gstrings_pfc_stats);
2363 	}
2364 
2365 check_data_pointer:
2366 	WARN_ONCE(data - p != i40e_get_stats_count(netdev),
2367 		  "ethtool stats count mismatch!");
2368 }
2369 
2370 /**
2371  * i40e_get_stat_strings - copy stat strings into supplied buffer
2372  * @netdev: the netdev to collect strings for
2373  * @data: supplied buffer to copy strings into
2374  *
2375  * Copy the strings related to stats for this netdev. Expects data to be
2376  * pre-allocated with the size reported by i40e_get_stats_count. Note that the
2377  * strings must be copied in a static order and the total count must not
2378  * change for a given netdev. See i40e_get_stats_count for more details.
2379  **/
i40e_get_stat_strings(struct net_device * netdev,u8 * data)2380 static void i40e_get_stat_strings(struct net_device *netdev, u8 *data)
2381 {
2382 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2383 	struct i40e_vsi *vsi = np->vsi;
2384 	struct i40e_pf *pf = vsi->back;
2385 	unsigned int i;
2386 	u8 *p = data;
2387 
2388 	i40e_add_stat_strings(&data, i40e_gstrings_net_stats);
2389 
2390 	i40e_add_stat_strings(&data, i40e_gstrings_misc_stats);
2391 
2392 	for (i = 0; i < netdev->num_tx_queues; i++) {
2393 		i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2394 				      "tx", i);
2395 		i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2396 				      "rx", i);
2397 	}
2398 
2399 	if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2400 		goto check_data_pointer;
2401 
2402 	i40e_add_stat_strings(&data, i40e_gstrings_veb_stats);
2403 
2404 	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2405 		i40e_add_stat_strings(&data, i40e_gstrings_veb_tc_stats, i);
2406 
2407 	i40e_add_stat_strings(&data, i40e_gstrings_stats);
2408 
2409 	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
2410 		i40e_add_stat_strings(&data, i40e_gstrings_pfc_stats, i);
2411 
2412 check_data_pointer:
2413 	WARN_ONCE(data - p != i40e_get_stats_count(netdev) * ETH_GSTRING_LEN,
2414 		  "stat strings count mismatch!");
2415 }
2416 
i40e_get_priv_flag_strings(struct net_device * netdev,u8 * data)2417 static void i40e_get_priv_flag_strings(struct net_device *netdev, u8 *data)
2418 {
2419 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2420 	struct i40e_vsi *vsi = np->vsi;
2421 	struct i40e_pf *pf = vsi->back;
2422 	unsigned int i;
2423 	u8 *p = data;
2424 
2425 	for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++)
2426 		ethtool_sprintf(&p, i40e_gstrings_priv_flags[i].flag_string);
2427 	if (pf->hw.pf_id != 0)
2428 		return;
2429 	for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++)
2430 		ethtool_sprintf(&p, i40e_gl_gstrings_priv_flags[i].flag_string);
2431 }
2432 
i40e_get_strings(struct net_device * netdev,u32 stringset,u8 * data)2433 static void i40e_get_strings(struct net_device *netdev, u32 stringset,
2434 			     u8 *data)
2435 {
2436 	switch (stringset) {
2437 	case ETH_SS_TEST:
2438 		memcpy(data, i40e_gstrings_test,
2439 		       I40E_TEST_LEN * ETH_GSTRING_LEN);
2440 		break;
2441 	case ETH_SS_STATS:
2442 		i40e_get_stat_strings(netdev, data);
2443 		break;
2444 	case ETH_SS_PRIV_FLAGS:
2445 		i40e_get_priv_flag_strings(netdev, data);
2446 		break;
2447 	default:
2448 		break;
2449 	}
2450 }
2451 
i40e_get_ts_info(struct net_device * dev,struct ethtool_ts_info * info)2452 static int i40e_get_ts_info(struct net_device *dev,
2453 			    struct ethtool_ts_info *info)
2454 {
2455 	struct i40e_pf *pf = i40e_netdev_to_pf(dev);
2456 
2457 	/* only report HW timestamping if PTP is enabled */
2458 	if (!(pf->flags & I40E_FLAG_PTP))
2459 		return ethtool_op_get_ts_info(dev, info);
2460 
2461 	info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
2462 				SOF_TIMESTAMPING_RX_SOFTWARE |
2463 				SOF_TIMESTAMPING_SOFTWARE |
2464 				SOF_TIMESTAMPING_TX_HARDWARE |
2465 				SOF_TIMESTAMPING_RX_HARDWARE |
2466 				SOF_TIMESTAMPING_RAW_HARDWARE;
2467 
2468 	if (pf->ptp_clock)
2469 		info->phc_index = ptp_clock_index(pf->ptp_clock);
2470 	else
2471 		info->phc_index = -1;
2472 
2473 	info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
2474 
2475 	info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
2476 			   BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
2477 			   BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
2478 			   BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ);
2479 
2480 	if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE)
2481 		info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
2482 				    BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
2483 				    BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
2484 				    BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
2485 				    BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
2486 				    BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
2487 				    BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
2488 				    BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
2489 
2490 	return 0;
2491 }
2492 
i40e_link_test(struct net_device * netdev,u64 * data)2493 static u64 i40e_link_test(struct net_device *netdev, u64 *data)
2494 {
2495 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2496 	struct i40e_pf *pf = np->vsi->back;
2497 	i40e_status status;
2498 	bool link_up = false;
2499 
2500 	netif_info(pf, hw, netdev, "link test\n");
2501 	status = i40e_get_link_status(&pf->hw, &link_up);
2502 	if (status) {
2503 		netif_err(pf, drv, netdev, "link query timed out, please retry test\n");
2504 		*data = 1;
2505 		return *data;
2506 	}
2507 
2508 	if (link_up)
2509 		*data = 0;
2510 	else
2511 		*data = 1;
2512 
2513 	return *data;
2514 }
2515 
i40e_reg_test(struct net_device * netdev,u64 * data)2516 static u64 i40e_reg_test(struct net_device *netdev, u64 *data)
2517 {
2518 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2519 	struct i40e_pf *pf = np->vsi->back;
2520 
2521 	netif_info(pf, hw, netdev, "register test\n");
2522 	*data = i40e_diag_reg_test(&pf->hw);
2523 
2524 	return *data;
2525 }
2526 
i40e_eeprom_test(struct net_device * netdev,u64 * data)2527 static u64 i40e_eeprom_test(struct net_device *netdev, u64 *data)
2528 {
2529 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2530 	struct i40e_pf *pf = np->vsi->back;
2531 
2532 	netif_info(pf, hw, netdev, "eeprom test\n");
2533 	*data = i40e_diag_eeprom_test(&pf->hw);
2534 
2535 	/* forcebly clear the NVM Update state machine */
2536 	pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT;
2537 
2538 	return *data;
2539 }
2540 
i40e_intr_test(struct net_device * netdev,u64 * data)2541 static u64 i40e_intr_test(struct net_device *netdev, u64 *data)
2542 {
2543 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2544 	struct i40e_pf *pf = np->vsi->back;
2545 	u16 swc_old = pf->sw_int_count;
2546 
2547 	netif_info(pf, hw, netdev, "interrupt test\n");
2548 	wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
2549 	     (I40E_PFINT_DYN_CTL0_INTENA_MASK |
2550 	      I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
2551 	      I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
2552 	      I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
2553 	      I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
2554 	usleep_range(1000, 2000);
2555 	*data = (swc_old == pf->sw_int_count);
2556 
2557 	return *data;
2558 }
2559 
i40e_active_vfs(struct i40e_pf * pf)2560 static inline bool i40e_active_vfs(struct i40e_pf *pf)
2561 {
2562 	struct i40e_vf *vfs = pf->vf;
2563 	int i;
2564 
2565 	for (i = 0; i < pf->num_alloc_vfs; i++)
2566 		if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states))
2567 			return true;
2568 	return false;
2569 }
2570 
i40e_active_vmdqs(struct i40e_pf * pf)2571 static inline bool i40e_active_vmdqs(struct i40e_pf *pf)
2572 {
2573 	return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2);
2574 }
2575 
i40e_diag_test(struct net_device * netdev,struct ethtool_test * eth_test,u64 * data)2576 static void i40e_diag_test(struct net_device *netdev,
2577 			   struct ethtool_test *eth_test, u64 *data)
2578 {
2579 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2580 	bool if_running = netif_running(netdev);
2581 	struct i40e_pf *pf = np->vsi->back;
2582 
2583 	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
2584 		/* Offline tests */
2585 		netif_info(pf, drv, netdev, "offline testing starting\n");
2586 
2587 		set_bit(__I40E_TESTING, pf->state);
2588 
2589 		if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
2590 		    test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) {
2591 			dev_warn(&pf->pdev->dev,
2592 				 "Cannot start offline testing when PF is in reset state.\n");
2593 			goto skip_ol_tests;
2594 		}
2595 
2596 		if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) {
2597 			dev_warn(&pf->pdev->dev,
2598 				 "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n");
2599 			goto skip_ol_tests;
2600 		}
2601 
2602 		/* If the device is online then take it offline */
2603 		if (if_running)
2604 			/* indicate we're in test mode */
2605 			i40e_close(netdev);
2606 		else
2607 			/* This reset does not affect link - if it is
2608 			 * changed to a type of reset that does affect
2609 			 * link then the following link test would have
2610 			 * to be moved to before the reset
2611 			 */
2612 			i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2613 
2614 		if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2615 			eth_test->flags |= ETH_TEST_FL_FAILED;
2616 
2617 		if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
2618 			eth_test->flags |= ETH_TEST_FL_FAILED;
2619 
2620 		if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
2621 			eth_test->flags |= ETH_TEST_FL_FAILED;
2622 
2623 		/* run reg test last, a reset is required after it */
2624 		if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
2625 			eth_test->flags |= ETH_TEST_FL_FAILED;
2626 
2627 		clear_bit(__I40E_TESTING, pf->state);
2628 		i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2629 
2630 		if (if_running)
2631 			i40e_open(netdev);
2632 	} else {
2633 		/* Online tests */
2634 		netif_info(pf, drv, netdev, "online testing starting\n");
2635 
2636 		if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2637 			eth_test->flags |= ETH_TEST_FL_FAILED;
2638 
2639 		/* Offline only tests, not run in online; pass by default */
2640 		data[I40E_ETH_TEST_REG] = 0;
2641 		data[I40E_ETH_TEST_EEPROM] = 0;
2642 		data[I40E_ETH_TEST_INTR] = 0;
2643 	}
2644 
2645 	netif_info(pf, drv, netdev, "testing finished\n");
2646 	return;
2647 
2648 skip_ol_tests:
2649 	data[I40E_ETH_TEST_REG]		= 1;
2650 	data[I40E_ETH_TEST_EEPROM]	= 1;
2651 	data[I40E_ETH_TEST_INTR]	= 1;
2652 	data[I40E_ETH_TEST_LINK]	= 1;
2653 	eth_test->flags |= ETH_TEST_FL_FAILED;
2654 	clear_bit(__I40E_TESTING, pf->state);
2655 	netif_info(pf, drv, netdev, "testing failed\n");
2656 }
2657 
i40e_get_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)2658 static void i40e_get_wol(struct net_device *netdev,
2659 			 struct ethtool_wolinfo *wol)
2660 {
2661 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2662 	struct i40e_pf *pf = np->vsi->back;
2663 	struct i40e_hw *hw = &pf->hw;
2664 	u16 wol_nvm_bits;
2665 
2666 	/* NVM bit on means WoL disabled for the port */
2667 	i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2668 	if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) {
2669 		wol->supported = 0;
2670 		wol->wolopts = 0;
2671 	} else {
2672 		wol->supported = WAKE_MAGIC;
2673 		wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
2674 	}
2675 }
2676 
2677 /**
2678  * i40e_set_wol - set the WakeOnLAN configuration
2679  * @netdev: the netdev in question
2680  * @wol: the ethtool WoL setting data
2681  **/
i40e_set_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)2682 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2683 {
2684 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2685 	struct i40e_pf *pf = np->vsi->back;
2686 	struct i40e_vsi *vsi = np->vsi;
2687 	struct i40e_hw *hw = &pf->hw;
2688 	u16 wol_nvm_bits;
2689 
2690 	/* WoL not supported if this isn't the controlling PF on the port */
2691 	if (hw->partition_id != 1) {
2692 		i40e_partition_setting_complaint(pf);
2693 		return -EOPNOTSUPP;
2694 	}
2695 
2696 	if (vsi != pf->vsi[pf->lan_vsi])
2697 		return -EOPNOTSUPP;
2698 
2699 	/* NVM bit on means WoL disabled for the port */
2700 	i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2701 	if (BIT(hw->port) & wol_nvm_bits)
2702 		return -EOPNOTSUPP;
2703 
2704 	/* only magic packet is supported */
2705 	if (wol->wolopts & ~WAKE_MAGIC)
2706 		return -EOPNOTSUPP;
2707 
2708 	/* is this a new value? */
2709 	if (pf->wol_en != !!wol->wolopts) {
2710 		pf->wol_en = !!wol->wolopts;
2711 		device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
2712 	}
2713 
2714 	return 0;
2715 }
2716 
i40e_set_phys_id(struct net_device * netdev,enum ethtool_phys_id_state state)2717 static int i40e_set_phys_id(struct net_device *netdev,
2718 			    enum ethtool_phys_id_state state)
2719 {
2720 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2721 	i40e_status ret = 0;
2722 	struct i40e_pf *pf = np->vsi->back;
2723 	struct i40e_hw *hw = &pf->hw;
2724 	int blink_freq = 2;
2725 	u16 temp_status;
2726 
2727 	switch (state) {
2728 	case ETHTOOL_ID_ACTIVE:
2729 		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2730 			pf->led_status = i40e_led_get(hw);
2731 		} else {
2732 			if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2733 				i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL,
2734 						      NULL);
2735 			ret = i40e_led_get_phy(hw, &temp_status,
2736 					       &pf->phy_led_val);
2737 			pf->led_status = temp_status;
2738 		}
2739 		return blink_freq;
2740 	case ETHTOOL_ID_ON:
2741 		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2742 			i40e_led_set(hw, 0xf, false);
2743 		else
2744 			ret = i40e_led_set_phy(hw, true, pf->led_status, 0);
2745 		break;
2746 	case ETHTOOL_ID_OFF:
2747 		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2748 			i40e_led_set(hw, 0x0, false);
2749 		else
2750 			ret = i40e_led_set_phy(hw, false, pf->led_status, 0);
2751 		break;
2752 	case ETHTOOL_ID_INACTIVE:
2753 		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2754 			i40e_led_set(hw, pf->led_status, false);
2755 		} else {
2756 			ret = i40e_led_set_phy(hw, false, pf->led_status,
2757 					       (pf->phy_led_val |
2758 					       I40E_PHY_LED_MODE_ORIG));
2759 			if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2760 				i40e_aq_set_phy_debug(hw, 0, NULL);
2761 		}
2762 		break;
2763 	default:
2764 		break;
2765 	}
2766 	if (ret)
2767 		return -ENOENT;
2768 	else
2769 		return 0;
2770 }
2771 
2772 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
2773  * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
2774  * 125us (8000 interrupts per second) == ITR(62)
2775  */
2776 
2777 /**
2778  * __i40e_get_coalesce - get per-queue coalesce settings
2779  * @netdev: the netdev to check
2780  * @ec: ethtool coalesce data structure
2781  * @queue: which queue to pick
2782  *
2783  * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
2784  * are per queue. If queue is <0 then we default to queue 0 as the
2785  * representative value.
2786  **/
__i40e_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,int queue)2787 static int __i40e_get_coalesce(struct net_device *netdev,
2788 			       struct ethtool_coalesce *ec,
2789 			       int queue)
2790 {
2791 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2792 	struct i40e_ring *rx_ring, *tx_ring;
2793 	struct i40e_vsi *vsi = np->vsi;
2794 
2795 	ec->tx_max_coalesced_frames_irq = vsi->work_limit;
2796 	ec->rx_max_coalesced_frames_irq = vsi->work_limit;
2797 
2798 	/* rx and tx usecs has per queue value. If user doesn't specify the
2799 	 * queue, return queue 0's value to represent.
2800 	 */
2801 	if (queue < 0)
2802 		queue = 0;
2803 	else if (queue >= vsi->num_queue_pairs)
2804 		return -EINVAL;
2805 
2806 	rx_ring = vsi->rx_rings[queue];
2807 	tx_ring = vsi->tx_rings[queue];
2808 
2809 	if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
2810 		ec->use_adaptive_rx_coalesce = 1;
2811 
2812 	if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
2813 		ec->use_adaptive_tx_coalesce = 1;
2814 
2815 	ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2816 	ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2817 
2818 	/* we use the _usecs_high to store/set the interrupt rate limit
2819 	 * that the hardware supports, that almost but not quite
2820 	 * fits the original intent of the ethtool variable,
2821 	 * the rx_coalesce_usecs_high limits total interrupts
2822 	 * per second from both tx/rx sources.
2823 	 */
2824 	ec->rx_coalesce_usecs_high = vsi->int_rate_limit;
2825 	ec->tx_coalesce_usecs_high = vsi->int_rate_limit;
2826 
2827 	return 0;
2828 }
2829 
2830 /**
2831  * i40e_get_coalesce - get a netdev's coalesce settings
2832  * @netdev: the netdev to check
2833  * @ec: ethtool coalesce data structure
2834  * @kernel_coal: ethtool CQE mode setting structure
2835  * @extack: extack for reporting error messages
2836  *
2837  * Gets the coalesce settings for a particular netdev. Note that if user has
2838  * modified per-queue settings, this only guarantees to represent queue 0. See
2839  * __i40e_get_coalesce for more details.
2840  **/
i40e_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)2841 static int i40e_get_coalesce(struct net_device *netdev,
2842 			     struct ethtool_coalesce *ec,
2843 			     struct kernel_ethtool_coalesce *kernel_coal,
2844 			     struct netlink_ext_ack *extack)
2845 {
2846 	return __i40e_get_coalesce(netdev, ec, -1);
2847 }
2848 
2849 /**
2850  * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue
2851  * @netdev: netdev structure
2852  * @ec: ethtool's coalesce settings
2853  * @queue: the particular queue to read
2854  *
2855  * Will read a specific queue's coalesce settings
2856  **/
i40e_get_per_queue_coalesce(struct net_device * netdev,u32 queue,struct ethtool_coalesce * ec)2857 static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
2858 				       struct ethtool_coalesce *ec)
2859 {
2860 	return __i40e_get_coalesce(netdev, ec, queue);
2861 }
2862 
2863 /**
2864  * i40e_set_itr_per_queue - set ITR values for specific queue
2865  * @vsi: the VSI to set values for
2866  * @ec: coalesce settings from ethtool
2867  * @queue: the queue to modify
2868  *
2869  * Change the ITR settings for a specific queue.
2870  **/
i40e_set_itr_per_queue(struct i40e_vsi * vsi,struct ethtool_coalesce * ec,int queue)2871 static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
2872 				   struct ethtool_coalesce *ec,
2873 				   int queue)
2874 {
2875 	struct i40e_ring *rx_ring = vsi->rx_rings[queue];
2876 	struct i40e_ring *tx_ring = vsi->tx_rings[queue];
2877 	struct i40e_pf *pf = vsi->back;
2878 	struct i40e_hw *hw = &pf->hw;
2879 	struct i40e_q_vector *q_vector;
2880 	u16 intrl;
2881 
2882 	intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit);
2883 
2884 	rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
2885 	tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
2886 
2887 	if (ec->use_adaptive_rx_coalesce)
2888 		rx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2889 	else
2890 		rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2891 
2892 	if (ec->use_adaptive_tx_coalesce)
2893 		tx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2894 	else
2895 		tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2896 
2897 	q_vector = rx_ring->q_vector;
2898 	q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
2899 
2900 	q_vector = tx_ring->q_vector;
2901 	q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
2902 
2903 	/* The interrupt handler itself will take care of programming
2904 	 * the Tx and Rx ITR values based on the values we have entered
2905 	 * into the q_vector, no need to write the values now.
2906 	 */
2907 
2908 	wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl);
2909 	i40e_flush(hw);
2910 }
2911 
2912 /**
2913  * __i40e_set_coalesce - set coalesce settings for particular queue
2914  * @netdev: the netdev to change
2915  * @ec: ethtool coalesce settings
2916  * @queue: the queue to change
2917  *
2918  * Sets the coalesce settings for a particular queue.
2919  **/
__i40e_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,int queue)2920 static int __i40e_set_coalesce(struct net_device *netdev,
2921 			       struct ethtool_coalesce *ec,
2922 			       int queue)
2923 {
2924 	struct i40e_netdev_priv *np = netdev_priv(netdev);
2925 	u16 intrl_reg, cur_rx_itr, cur_tx_itr;
2926 	struct i40e_vsi *vsi = np->vsi;
2927 	struct i40e_pf *pf = vsi->back;
2928 	int i;
2929 
2930 	if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
2931 		vsi->work_limit = ec->tx_max_coalesced_frames_irq;
2932 
2933 	if (queue < 0) {
2934 		cur_rx_itr = vsi->rx_rings[0]->itr_setting;
2935 		cur_tx_itr = vsi->tx_rings[0]->itr_setting;
2936 	} else if (queue < vsi->num_queue_pairs) {
2937 		cur_rx_itr = vsi->rx_rings[queue]->itr_setting;
2938 		cur_tx_itr = vsi->tx_rings[queue]->itr_setting;
2939 	} else {
2940 		netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
2941 			   vsi->num_queue_pairs - 1);
2942 		return -EINVAL;
2943 	}
2944 
2945 	cur_tx_itr &= ~I40E_ITR_DYNAMIC;
2946 	cur_rx_itr &= ~I40E_ITR_DYNAMIC;
2947 
2948 	/* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */
2949 	if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) {
2950 		netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n");
2951 		return -EINVAL;
2952 	}
2953 
2954 	if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) {
2955 		netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n",
2956 			   INTRL_REG_TO_USEC(I40E_MAX_INTRL));
2957 		return -EINVAL;
2958 	}
2959 
2960 	if (ec->rx_coalesce_usecs != cur_rx_itr &&
2961 	    ec->use_adaptive_rx_coalesce) {
2962 		netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n");
2963 		return -EINVAL;
2964 	}
2965 
2966 	if (ec->rx_coalesce_usecs > I40E_MAX_ITR) {
2967 		netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
2968 		return -EINVAL;
2969 	}
2970 
2971 	if (ec->tx_coalesce_usecs != cur_tx_itr &&
2972 	    ec->use_adaptive_tx_coalesce) {
2973 		netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n");
2974 		return -EINVAL;
2975 	}
2976 
2977 	if (ec->tx_coalesce_usecs > I40E_MAX_ITR) {
2978 		netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
2979 		return -EINVAL;
2980 	}
2981 
2982 	if (ec->use_adaptive_rx_coalesce && !cur_rx_itr)
2983 		ec->rx_coalesce_usecs = I40E_MIN_ITR;
2984 
2985 	if (ec->use_adaptive_tx_coalesce && !cur_tx_itr)
2986 		ec->tx_coalesce_usecs = I40E_MIN_ITR;
2987 
2988 	intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high);
2989 	vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg);
2990 	if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) {
2991 		netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n",
2992 			   vsi->int_rate_limit);
2993 	}
2994 
2995 	/* rx and tx usecs has per queue value. If user doesn't specify the
2996 	 * queue, apply to all queues.
2997 	 */
2998 	if (queue < 0) {
2999 		for (i = 0; i < vsi->num_queue_pairs; i++)
3000 			i40e_set_itr_per_queue(vsi, ec, i);
3001 	} else {
3002 		i40e_set_itr_per_queue(vsi, ec, queue);
3003 	}
3004 
3005 	return 0;
3006 }
3007 
3008 /**
3009  * i40e_set_coalesce - set coalesce settings for every queue on the netdev
3010  * @netdev: the netdev to change
3011  * @ec: ethtool coalesce settings
3012  * @kernel_coal: ethtool CQE mode setting structure
3013  * @extack: extack for reporting error messages
3014  *
3015  * This will set each queue to the same coalesce settings.
3016  **/
i40e_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)3017 static int i40e_set_coalesce(struct net_device *netdev,
3018 			     struct ethtool_coalesce *ec,
3019 			     struct kernel_ethtool_coalesce *kernel_coal,
3020 			     struct netlink_ext_ack *extack)
3021 {
3022 	return __i40e_set_coalesce(netdev, ec, -1);
3023 }
3024 
3025 /**
3026  * i40e_set_per_queue_coalesce - set specific queue's coalesce settings
3027  * @netdev: the netdev to change
3028  * @ec: ethtool's coalesce settings
3029  * @queue: the queue to change
3030  *
3031  * Sets the specified queue's coalesce settings.
3032  **/
i40e_set_per_queue_coalesce(struct net_device * netdev,u32 queue,struct ethtool_coalesce * ec)3033 static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
3034 				       struct ethtool_coalesce *ec)
3035 {
3036 	return __i40e_set_coalesce(netdev, ec, queue);
3037 }
3038 
3039 /**
3040  * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
3041  * @pf: pointer to the physical function struct
3042  * @cmd: ethtool rxnfc command
3043  *
3044  * Returns Success if the flow is supported, else Invalid Input.
3045  **/
i40e_get_rss_hash_opts(struct i40e_pf * pf,struct ethtool_rxnfc * cmd)3046 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
3047 {
3048 	struct i40e_hw *hw = &pf->hw;
3049 	u8 flow_pctype = 0;
3050 	u64 i_set = 0;
3051 
3052 	cmd->data = 0;
3053 
3054 	switch (cmd->flow_type) {
3055 	case TCP_V4_FLOW:
3056 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3057 		break;
3058 	case UDP_V4_FLOW:
3059 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3060 		break;
3061 	case TCP_V6_FLOW:
3062 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3063 		break;
3064 	case UDP_V6_FLOW:
3065 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3066 		break;
3067 	case SCTP_V4_FLOW:
3068 	case AH_ESP_V4_FLOW:
3069 	case AH_V4_FLOW:
3070 	case ESP_V4_FLOW:
3071 	case IPV4_FLOW:
3072 	case SCTP_V6_FLOW:
3073 	case AH_ESP_V6_FLOW:
3074 	case AH_V6_FLOW:
3075 	case ESP_V6_FLOW:
3076 	case IPV6_FLOW:
3077 		/* Default is src/dest for IP, no matter the L4 hashing */
3078 		cmd->data |= RXH_IP_SRC | RXH_IP_DST;
3079 		break;
3080 	default:
3081 		return -EINVAL;
3082 	}
3083 
3084 	/* Read flow based hash input set register */
3085 	if (flow_pctype) {
3086 		i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3087 					      flow_pctype)) |
3088 			((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3089 					       flow_pctype)) << 32);
3090 	}
3091 
3092 	/* Process bits of hash input set */
3093 	if (i_set) {
3094 		if (i_set & I40E_L4_SRC_MASK)
3095 			cmd->data |= RXH_L4_B_0_1;
3096 		if (i_set & I40E_L4_DST_MASK)
3097 			cmd->data |= RXH_L4_B_2_3;
3098 
3099 		if (cmd->flow_type == TCP_V4_FLOW ||
3100 		    cmd->flow_type == UDP_V4_FLOW) {
3101 			if (i_set & I40E_L3_SRC_MASK)
3102 				cmd->data |= RXH_IP_SRC;
3103 			if (i_set & I40E_L3_DST_MASK)
3104 				cmd->data |= RXH_IP_DST;
3105 		} else if (cmd->flow_type == TCP_V6_FLOW ||
3106 			  cmd->flow_type == UDP_V6_FLOW) {
3107 			if (i_set & I40E_L3_V6_SRC_MASK)
3108 				cmd->data |= RXH_IP_SRC;
3109 			if (i_set & I40E_L3_V6_DST_MASK)
3110 				cmd->data |= RXH_IP_DST;
3111 		}
3112 	}
3113 
3114 	return 0;
3115 }
3116 
3117 /**
3118  * i40e_check_mask - Check whether a mask field is set
3119  * @mask: the full mask value
3120  * @field: mask of the field to check
3121  *
3122  * If the given mask is fully set, return positive value. If the mask for the
3123  * field is fully unset, return zero. Otherwise return a negative error code.
3124  **/
i40e_check_mask(u64 mask,u64 field)3125 static int i40e_check_mask(u64 mask, u64 field)
3126 {
3127 	u64 value = mask & field;
3128 
3129 	if (value == field)
3130 		return 1;
3131 	else if (!value)
3132 		return 0;
3133 	else
3134 		return -1;
3135 }
3136 
3137 /**
3138  * i40e_parse_rx_flow_user_data - Deconstruct user-defined data
3139  * @fsp: pointer to rx flow specification
3140  * @data: pointer to userdef data structure for storage
3141  *
3142  * Read the user-defined data and deconstruct the value into a structure. No
3143  * other code should read the user-defined data, so as to ensure that every
3144  * place consistently reads the value correctly.
3145  *
3146  * The user-defined field is a 64bit Big Endian format value, which we
3147  * deconstruct by reading bits or bit fields from it. Single bit flags shall
3148  * be defined starting from the highest bits, while small bit field values
3149  * shall be defined starting from the lowest bits.
3150  *
3151  * Returns 0 if the data is valid, and non-zero if the userdef data is invalid
3152  * and the filter should be rejected. The data structure will always be
3153  * modified even if FLOW_EXT is not set.
3154  *
3155  **/
i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec * fsp,struct i40e_rx_flow_userdef * data)3156 static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3157 					struct i40e_rx_flow_userdef *data)
3158 {
3159 	u64 value, mask;
3160 	int valid;
3161 
3162 	/* Zero memory first so it's always consistent. */
3163 	memset(data, 0, sizeof(*data));
3164 
3165 	if (!(fsp->flow_type & FLOW_EXT))
3166 		return 0;
3167 
3168 	value = be64_to_cpu(*((__be64 *)fsp->h_ext.data));
3169 	mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data));
3170 
3171 #define I40E_USERDEF_FLEX_WORD		GENMASK_ULL(15, 0)
3172 #define I40E_USERDEF_FLEX_OFFSET	GENMASK_ULL(31, 16)
3173 #define I40E_USERDEF_FLEX_FILTER	GENMASK_ULL(31, 0)
3174 
3175 	valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER);
3176 	if (valid < 0) {
3177 		return -EINVAL;
3178 	} else if (valid) {
3179 		data->flex_word = value & I40E_USERDEF_FLEX_WORD;
3180 		data->flex_offset =
3181 			(value & I40E_USERDEF_FLEX_OFFSET) >> 16;
3182 		data->flex_filter = true;
3183 	}
3184 
3185 	return 0;
3186 }
3187 
3188 /**
3189  * i40e_fill_rx_flow_user_data - Fill in user-defined data field
3190  * @fsp: pointer to rx_flow specification
3191  * @data: pointer to return userdef data
3192  *
3193  * Reads the userdef data structure and properly fills in the user defined
3194  * fields of the rx_flow_spec.
3195  **/
i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec * fsp,struct i40e_rx_flow_userdef * data)3196 static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3197 					struct i40e_rx_flow_userdef *data)
3198 {
3199 	u64 value = 0, mask = 0;
3200 
3201 	if (data->flex_filter) {
3202 		value |= data->flex_word;
3203 		value |= (u64)data->flex_offset << 16;
3204 		mask |= I40E_USERDEF_FLEX_FILTER;
3205 	}
3206 
3207 	if (value || mask)
3208 		fsp->flow_type |= FLOW_EXT;
3209 
3210 	*((__be64 *)fsp->h_ext.data) = cpu_to_be64(value);
3211 	*((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask);
3212 }
3213 
3214 /**
3215  * i40e_get_ethtool_fdir_all - Populates the rule count of a command
3216  * @pf: Pointer to the physical function struct
3217  * @cmd: The command to get or set Rx flow classification rules
3218  * @rule_locs: Array of used rule locations
3219  *
3220  * This function populates both the total and actual rule count of
3221  * the ethtool flow classification command
3222  *
3223  * Returns 0 on success or -EMSGSIZE if entry not found
3224  **/
i40e_get_ethtool_fdir_all(struct i40e_pf * pf,struct ethtool_rxnfc * cmd,u32 * rule_locs)3225 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
3226 				     struct ethtool_rxnfc *cmd,
3227 				     u32 *rule_locs)
3228 {
3229 	struct i40e_fdir_filter *rule;
3230 	struct hlist_node *node2;
3231 	int cnt = 0;
3232 
3233 	/* report total rule count */
3234 	cmd->data = i40e_get_fd_cnt_all(pf);
3235 
3236 	hlist_for_each_entry_safe(rule, node2,
3237 				  &pf->fdir_filter_list, fdir_node) {
3238 		if (cnt == cmd->rule_cnt)
3239 			return -EMSGSIZE;
3240 
3241 		rule_locs[cnt] = rule->fd_id;
3242 		cnt++;
3243 	}
3244 
3245 	cmd->rule_cnt = cnt;
3246 
3247 	return 0;
3248 }
3249 
3250 /**
3251  * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
3252  * @pf: Pointer to the physical function struct
3253  * @cmd: The command to get or set Rx flow classification rules
3254  *
3255  * This function looks up a filter based on the Rx flow classification
3256  * command and fills the flow spec info for it if found
3257  *
3258  * Returns 0 on success or -EINVAL if filter not found
3259  **/
i40e_get_ethtool_fdir_entry(struct i40e_pf * pf,struct ethtool_rxnfc * cmd)3260 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
3261 				       struct ethtool_rxnfc *cmd)
3262 {
3263 	struct ethtool_rx_flow_spec *fsp =
3264 			(struct ethtool_rx_flow_spec *)&cmd->fs;
3265 	struct i40e_rx_flow_userdef userdef = {0};
3266 	struct i40e_fdir_filter *rule = NULL;
3267 	struct hlist_node *node2;
3268 	u64 input_set;
3269 	u16 index;
3270 
3271 	hlist_for_each_entry_safe(rule, node2,
3272 				  &pf->fdir_filter_list, fdir_node) {
3273 		if (fsp->location <= rule->fd_id)
3274 			break;
3275 	}
3276 
3277 	if (!rule || fsp->location != rule->fd_id)
3278 		return -EINVAL;
3279 
3280 	fsp->flow_type = rule->flow_type;
3281 	if (fsp->flow_type == IP_USER_FLOW) {
3282 		fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
3283 		fsp->h_u.usr_ip4_spec.proto = 0;
3284 		fsp->m_u.usr_ip4_spec.proto = 0;
3285 	}
3286 
3287 	if (fsp->flow_type == IPV6_USER_FLOW ||
3288 	    fsp->flow_type == UDP_V6_FLOW ||
3289 	    fsp->flow_type == TCP_V6_FLOW ||
3290 	    fsp->flow_type == SCTP_V6_FLOW) {
3291 		/* Reverse the src and dest notion, since the HW views them
3292 		 * from Tx perspective where as the user expects it from
3293 		 * Rx filter view.
3294 		 */
3295 		fsp->h_u.tcp_ip6_spec.psrc = rule->dst_port;
3296 		fsp->h_u.tcp_ip6_spec.pdst = rule->src_port;
3297 		memcpy(fsp->h_u.tcp_ip6_spec.ip6dst, rule->src_ip6,
3298 		       sizeof(__be32) * 4);
3299 		memcpy(fsp->h_u.tcp_ip6_spec.ip6src, rule->dst_ip6,
3300 		       sizeof(__be32) * 4);
3301 	} else {
3302 		/* Reverse the src and dest notion, since the HW views them
3303 		 * from Tx perspective where as the user expects it from
3304 		 * Rx filter view.
3305 		 */
3306 		fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port;
3307 		fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
3308 		fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
3309 		fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
3310 	}
3311 
3312 	switch (rule->flow_type) {
3313 	case SCTP_V4_FLOW:
3314 		index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
3315 		break;
3316 	case TCP_V4_FLOW:
3317 		index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3318 		break;
3319 	case UDP_V4_FLOW:
3320 		index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3321 		break;
3322 	case SCTP_V6_FLOW:
3323 		index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
3324 		break;
3325 	case TCP_V6_FLOW:
3326 		index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3327 		break;
3328 	case UDP_V6_FLOW:
3329 		index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3330 		break;
3331 	case IP_USER_FLOW:
3332 		index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
3333 		break;
3334 	case IPV6_USER_FLOW:
3335 		index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER;
3336 		break;
3337 	default:
3338 		/* If we have stored a filter with a flow type not listed here
3339 		 * it is almost certainly a driver bug. WARN(), and then
3340 		 * assign the input_set as if all fields are enabled to avoid
3341 		 * reading unassigned memory.
3342 		 */
3343 		WARN(1, "Missing input set index for flow_type %d\n",
3344 		     rule->flow_type);
3345 		input_set = 0xFFFFFFFFFFFFFFFFULL;
3346 		goto no_input_set;
3347 	}
3348 
3349 	input_set = i40e_read_fd_input_set(pf, index);
3350 
3351 no_input_set:
3352 	if (input_set & I40E_L3_V6_SRC_MASK) {
3353 		fsp->m_u.tcp_ip6_spec.ip6src[0] = htonl(0xFFFFFFFF);
3354 		fsp->m_u.tcp_ip6_spec.ip6src[1] = htonl(0xFFFFFFFF);
3355 		fsp->m_u.tcp_ip6_spec.ip6src[2] = htonl(0xFFFFFFFF);
3356 		fsp->m_u.tcp_ip6_spec.ip6src[3] = htonl(0xFFFFFFFF);
3357 	}
3358 
3359 	if (input_set & I40E_L3_V6_DST_MASK) {
3360 		fsp->m_u.tcp_ip6_spec.ip6dst[0] = htonl(0xFFFFFFFF);
3361 		fsp->m_u.tcp_ip6_spec.ip6dst[1] = htonl(0xFFFFFFFF);
3362 		fsp->m_u.tcp_ip6_spec.ip6dst[2] = htonl(0xFFFFFFFF);
3363 		fsp->m_u.tcp_ip6_spec.ip6dst[3] = htonl(0xFFFFFFFF);
3364 	}
3365 
3366 	if (input_set & I40E_L3_SRC_MASK)
3367 		fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF);
3368 
3369 	if (input_set & I40E_L3_DST_MASK)
3370 		fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF);
3371 
3372 	if (input_set & I40E_L4_SRC_MASK)
3373 		fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF);
3374 
3375 	if (input_set & I40E_L4_DST_MASK)
3376 		fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF);
3377 
3378 	if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET)
3379 		fsp->ring_cookie = RX_CLS_FLOW_DISC;
3380 	else
3381 		fsp->ring_cookie = rule->q_index;
3382 
3383 	if (rule->vlan_tag) {
3384 		fsp->h_ext.vlan_etype = rule->vlan_etype;
3385 		fsp->m_ext.vlan_etype = htons(0xFFFF);
3386 		fsp->h_ext.vlan_tci = rule->vlan_tag;
3387 		fsp->m_ext.vlan_tci = htons(0xFFFF);
3388 		fsp->flow_type |= FLOW_EXT;
3389 	}
3390 
3391 	if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) {
3392 		struct i40e_vsi *vsi;
3393 
3394 		vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi);
3395 		if (vsi && vsi->type == I40E_VSI_SRIOV) {
3396 			/* VFs are zero-indexed by the driver, but ethtool
3397 			 * expects them to be one-indexed, so add one here
3398 			 */
3399 			u64 ring_vf = vsi->vf_id + 1;
3400 
3401 			ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
3402 			fsp->ring_cookie |= ring_vf;
3403 		}
3404 	}
3405 
3406 	if (rule->flex_filter) {
3407 		userdef.flex_filter = true;
3408 		userdef.flex_word = be16_to_cpu(rule->flex_word);
3409 		userdef.flex_offset = rule->flex_offset;
3410 	}
3411 
3412 	i40e_fill_rx_flow_user_data(fsp, &userdef);
3413 
3414 	return 0;
3415 }
3416 
3417 /**
3418  * i40e_get_rxnfc - command to get RX flow classification rules
3419  * @netdev: network interface device structure
3420  * @cmd: ethtool rxnfc command
3421  * @rule_locs: pointer to store rule data
3422  *
3423  * Returns Success if the command is supported.
3424  **/
i40e_get_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * cmd,u32 * rule_locs)3425 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
3426 			  u32 *rule_locs)
3427 {
3428 	struct i40e_netdev_priv *np = netdev_priv(netdev);
3429 	struct i40e_vsi *vsi = np->vsi;
3430 	struct i40e_pf *pf = vsi->back;
3431 	int ret = -EOPNOTSUPP;
3432 
3433 	switch (cmd->cmd) {
3434 	case ETHTOOL_GRXRINGS:
3435 		cmd->data = vsi->rss_size;
3436 		ret = 0;
3437 		break;
3438 	case ETHTOOL_GRXFH:
3439 		ret = i40e_get_rss_hash_opts(pf, cmd);
3440 		break;
3441 	case ETHTOOL_GRXCLSRLCNT:
3442 		cmd->rule_cnt = pf->fdir_pf_active_filters;
3443 		/* report total rule count */
3444 		cmd->data = i40e_get_fd_cnt_all(pf);
3445 		ret = 0;
3446 		break;
3447 	case ETHTOOL_GRXCLSRULE:
3448 		ret = i40e_get_ethtool_fdir_entry(pf, cmd);
3449 		break;
3450 	case ETHTOOL_GRXCLSRLALL:
3451 		ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
3452 		break;
3453 	default:
3454 		break;
3455 	}
3456 
3457 	return ret;
3458 }
3459 
3460 /**
3461  * i40e_get_rss_hash_bits - Read RSS Hash bits from register
3462  * @nfc: pointer to user request
3463  * @i_setc: bits currently set
3464  *
3465  * Returns value of bits to be set per user request
3466  **/
i40e_get_rss_hash_bits(struct ethtool_rxnfc * nfc,u64 i_setc)3467 static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc)
3468 {
3469 	u64 i_set = i_setc;
3470 	u64 src_l3 = 0, dst_l3 = 0;
3471 
3472 	if (nfc->data & RXH_L4_B_0_1)
3473 		i_set |= I40E_L4_SRC_MASK;
3474 	else
3475 		i_set &= ~I40E_L4_SRC_MASK;
3476 	if (nfc->data & RXH_L4_B_2_3)
3477 		i_set |= I40E_L4_DST_MASK;
3478 	else
3479 		i_set &= ~I40E_L4_DST_MASK;
3480 
3481 	if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) {
3482 		src_l3 = I40E_L3_V6_SRC_MASK;
3483 		dst_l3 = I40E_L3_V6_DST_MASK;
3484 	} else if (nfc->flow_type == TCP_V4_FLOW ||
3485 		  nfc->flow_type == UDP_V4_FLOW) {
3486 		src_l3 = I40E_L3_SRC_MASK;
3487 		dst_l3 = I40E_L3_DST_MASK;
3488 	} else {
3489 		/* Any other flow type are not supported here */
3490 		return i_set;
3491 	}
3492 
3493 	if (nfc->data & RXH_IP_SRC)
3494 		i_set |= src_l3;
3495 	else
3496 		i_set &= ~src_l3;
3497 	if (nfc->data & RXH_IP_DST)
3498 		i_set |= dst_l3;
3499 	else
3500 		i_set &= ~dst_l3;
3501 
3502 	return i_set;
3503 }
3504 
3505 /**
3506  * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
3507  * @pf: pointer to the physical function struct
3508  * @nfc: ethtool rxnfc command
3509  *
3510  * Returns Success if the flow input set is supported.
3511  **/
i40e_set_rss_hash_opt(struct i40e_pf * pf,struct ethtool_rxnfc * nfc)3512 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
3513 {
3514 	struct i40e_hw *hw = &pf->hw;
3515 	u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
3516 		   ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
3517 	u8 flow_pctype = 0;
3518 	u64 i_set, i_setc;
3519 
3520 	if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3521 		dev_err(&pf->pdev->dev,
3522 			"Change of RSS hash input set is not supported when MFP mode is enabled\n");
3523 		return -EOPNOTSUPP;
3524 	}
3525 
3526 	/* RSS does not support anything other than hashing
3527 	 * to queues on src and dst IPs and ports
3528 	 */
3529 	if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
3530 			  RXH_L4_B_0_1 | RXH_L4_B_2_3))
3531 		return -EINVAL;
3532 
3533 	switch (nfc->flow_type) {
3534 	case TCP_V4_FLOW:
3535 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3536 		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3537 			hena |=
3538 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3539 		break;
3540 	case TCP_V6_FLOW:
3541 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3542 		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3543 			hena |=
3544 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3545 		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3546 			hena |=
3547 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK);
3548 		break;
3549 	case UDP_V4_FLOW:
3550 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3551 		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3552 			hena |=
3553 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
3554 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP);
3555 
3556 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3557 		break;
3558 	case UDP_V6_FLOW:
3559 		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3560 		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3561 			hena |=
3562 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
3563 			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP);
3564 
3565 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3566 		break;
3567 	case AH_ESP_V4_FLOW:
3568 	case AH_V4_FLOW:
3569 	case ESP_V4_FLOW:
3570 	case SCTP_V4_FLOW:
3571 		if ((nfc->data & RXH_L4_B_0_1) ||
3572 		    (nfc->data & RXH_L4_B_2_3))
3573 			return -EINVAL;
3574 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
3575 		break;
3576 	case AH_ESP_V6_FLOW:
3577 	case AH_V6_FLOW:
3578 	case ESP_V6_FLOW:
3579 	case SCTP_V6_FLOW:
3580 		if ((nfc->data & RXH_L4_B_0_1) ||
3581 		    (nfc->data & RXH_L4_B_2_3))
3582 			return -EINVAL;
3583 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
3584 		break;
3585 	case IPV4_FLOW:
3586 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
3587 			BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3588 		break;
3589 	case IPV6_FLOW:
3590 		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
3591 			BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3592 		break;
3593 	default:
3594 		return -EINVAL;
3595 	}
3596 
3597 	if (flow_pctype) {
3598 		i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3599 					       flow_pctype)) |
3600 			((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3601 					       flow_pctype)) << 32);
3602 		i_set = i40e_get_rss_hash_bits(nfc, i_setc);
3603 		i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype),
3604 				  (u32)i_set);
3605 		i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype),
3606 				  (u32)(i_set >> 32));
3607 		hena |= BIT_ULL(flow_pctype);
3608 	}
3609 
3610 	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
3611 	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
3612 	i40e_flush(hw);
3613 
3614 	return 0;
3615 }
3616 
3617 /**
3618  * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
3619  * @vsi: Pointer to the targeted VSI
3620  * @input: The filter to update or NULL to indicate deletion
3621  * @sw_idx: Software index to the filter
3622  * @cmd: The command to get or set Rx flow classification rules
3623  *
3624  * This function updates (or deletes) a Flow Director entry from
3625  * the hlist of the corresponding PF
3626  *
3627  * Returns 0 on success
3628  **/
i40e_update_ethtool_fdir_entry(struct i40e_vsi * vsi,struct i40e_fdir_filter * input,u16 sw_idx,struct ethtool_rxnfc * cmd)3629 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
3630 					  struct i40e_fdir_filter *input,
3631 					  u16 sw_idx,
3632 					  struct ethtool_rxnfc *cmd)
3633 {
3634 	struct i40e_fdir_filter *rule, *parent;
3635 	struct i40e_pf *pf = vsi->back;
3636 	struct hlist_node *node2;
3637 	int err = -EINVAL;
3638 
3639 	parent = NULL;
3640 	rule = NULL;
3641 
3642 	hlist_for_each_entry_safe(rule, node2,
3643 				  &pf->fdir_filter_list, fdir_node) {
3644 		/* hash found, or no matching entry */
3645 		if (rule->fd_id >= sw_idx)
3646 			break;
3647 		parent = rule;
3648 	}
3649 
3650 	/* if there is an old rule occupying our place remove it */
3651 	if (rule && (rule->fd_id == sw_idx)) {
3652 		/* Remove this rule, since we're either deleting it, or
3653 		 * replacing it.
3654 		 */
3655 		err = i40e_add_del_fdir(vsi, rule, false);
3656 		hlist_del(&rule->fdir_node);
3657 		kfree(rule);
3658 		pf->fdir_pf_active_filters--;
3659 	}
3660 
3661 	/* If we weren't given an input, this is a delete, so just return the
3662 	 * error code indicating if there was an entry at the requested slot
3663 	 */
3664 	if (!input)
3665 		return err;
3666 
3667 	/* Otherwise, install the new rule as requested */
3668 	INIT_HLIST_NODE(&input->fdir_node);
3669 
3670 	/* add filter to the list */
3671 	if (parent)
3672 		hlist_add_behind(&input->fdir_node, &parent->fdir_node);
3673 	else
3674 		hlist_add_head(&input->fdir_node,
3675 			       &pf->fdir_filter_list);
3676 
3677 	/* update counts */
3678 	pf->fdir_pf_active_filters++;
3679 
3680 	return 0;
3681 }
3682 
3683 /**
3684  * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table
3685  * @pf: pointer to PF structure
3686  *
3687  * This function searches the list of filters and determines which FLX_PIT
3688  * entries are still required. It will prune any entries which are no longer
3689  * in use after the deletion.
3690  **/
i40e_prune_flex_pit_list(struct i40e_pf * pf)3691 static void i40e_prune_flex_pit_list(struct i40e_pf *pf)
3692 {
3693 	struct i40e_flex_pit *entry, *tmp;
3694 	struct i40e_fdir_filter *rule;
3695 
3696 	/* First, we'll check the l3 table */
3697 	list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) {
3698 		bool found = false;
3699 
3700 		hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3701 			if (rule->flow_type != IP_USER_FLOW)
3702 				continue;
3703 			if (rule->flex_filter &&
3704 			    rule->flex_offset == entry->src_offset) {
3705 				found = true;
3706 				break;
3707 			}
3708 		}
3709 
3710 		/* If we didn't find the filter, then we can prune this entry
3711 		 * from the list.
3712 		 */
3713 		if (!found) {
3714 			list_del(&entry->list);
3715 			kfree(entry);
3716 		}
3717 	}
3718 
3719 	/* Followed by the L4 table */
3720 	list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) {
3721 		bool found = false;
3722 
3723 		hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3724 			/* Skip this filter if it's L3, since we already
3725 			 * checked those in the above loop
3726 			 */
3727 			if (rule->flow_type == IP_USER_FLOW)
3728 				continue;
3729 			if (rule->flex_filter &&
3730 			    rule->flex_offset == entry->src_offset) {
3731 				found = true;
3732 				break;
3733 			}
3734 		}
3735 
3736 		/* If we didn't find the filter, then we can prune this entry
3737 		 * from the list.
3738 		 */
3739 		if (!found) {
3740 			list_del(&entry->list);
3741 			kfree(entry);
3742 		}
3743 	}
3744 }
3745 
3746 /**
3747  * i40e_del_fdir_entry - Deletes a Flow Director filter entry
3748  * @vsi: Pointer to the targeted VSI
3749  * @cmd: The command to get or set Rx flow classification rules
3750  *
3751  * The function removes a Flow Director filter entry from the
3752  * hlist of the corresponding PF
3753  *
3754  * Returns 0 on success
3755  */
i40e_del_fdir_entry(struct i40e_vsi * vsi,struct ethtool_rxnfc * cmd)3756 static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
3757 			       struct ethtool_rxnfc *cmd)
3758 {
3759 	struct ethtool_rx_flow_spec *fsp =
3760 		(struct ethtool_rx_flow_spec *)&cmd->fs;
3761 	struct i40e_pf *pf = vsi->back;
3762 	int ret = 0;
3763 
3764 	if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
3765 	    test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
3766 		return -EBUSY;
3767 
3768 	if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
3769 		return -EBUSY;
3770 
3771 	ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
3772 
3773 	i40e_prune_flex_pit_list(pf);
3774 
3775 	i40e_fdir_check_and_reenable(pf);
3776 	return ret;
3777 }
3778 
3779 /**
3780  * i40e_unused_pit_index - Find an unused PIT index for given list
3781  * @pf: the PF data structure
3782  *
3783  * Find the first unused flexible PIT index entry. We search both the L3 and
3784  * L4 flexible PIT lists so that the returned index is unique and unused by
3785  * either currently programmed L3 or L4 filters. We use a bit field as storage
3786  * to track which indexes are already used.
3787  **/
i40e_unused_pit_index(struct i40e_pf * pf)3788 static u8 i40e_unused_pit_index(struct i40e_pf *pf)
3789 {
3790 	unsigned long available_index = 0xFF;
3791 	struct i40e_flex_pit *entry;
3792 
3793 	/* We need to make sure that the new index isn't in use by either L3
3794 	 * or L4 filters so that IP_USER_FLOW filters can program both L3 and
3795 	 * L4 to use the same index.
3796 	 */
3797 
3798 	list_for_each_entry(entry, &pf->l4_flex_pit_list, list)
3799 		clear_bit(entry->pit_index, &available_index);
3800 
3801 	list_for_each_entry(entry, &pf->l3_flex_pit_list, list)
3802 		clear_bit(entry->pit_index, &available_index);
3803 
3804 	return find_first_bit(&available_index, 8);
3805 }
3806 
3807 /**
3808  * i40e_find_flex_offset - Find an existing flex src_offset
3809  * @flex_pit_list: L3 or L4 flex PIT list
3810  * @src_offset: new src_offset to find
3811  *
3812  * Searches the flex_pit_list for an existing offset. If no offset is
3813  * currently programmed, then this will return an ERR_PTR if there is no space
3814  * to add a new offset, otherwise it returns NULL.
3815  **/
3816 static
i40e_find_flex_offset(struct list_head * flex_pit_list,u16 src_offset)3817 struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list,
3818 					    u16 src_offset)
3819 {
3820 	struct i40e_flex_pit *entry;
3821 	int size = 0;
3822 
3823 	/* Search for the src_offset first. If we find a matching entry
3824 	 * already programmed, we can simply re-use it.
3825 	 */
3826 	list_for_each_entry(entry, flex_pit_list, list) {
3827 		size++;
3828 		if (entry->src_offset == src_offset)
3829 			return entry;
3830 	}
3831 
3832 	/* If we haven't found an entry yet, then the provided src offset has
3833 	 * not yet been programmed. We will program the src offset later on,
3834 	 * but we need to indicate whether there is enough space to do so
3835 	 * here. We'll make use of ERR_PTR for this purpose.
3836 	 */
3837 	if (size >= I40E_FLEX_PIT_TABLE_SIZE)
3838 		return ERR_PTR(-ENOSPC);
3839 
3840 	return NULL;
3841 }
3842 
3843 /**
3844  * i40e_add_flex_offset - Add src_offset to flex PIT table list
3845  * @flex_pit_list: L3 or L4 flex PIT list
3846  * @src_offset: new src_offset to add
3847  * @pit_index: the PIT index to program
3848  *
3849  * This function programs the new src_offset to the list. It is expected that
3850  * i40e_find_flex_offset has already been tried and returned NULL, indicating
3851  * that this offset is not programmed, and that the list has enough space to
3852  * store another offset.
3853  *
3854  * Returns 0 on success, and negative value on error.
3855  **/
i40e_add_flex_offset(struct list_head * flex_pit_list,u16 src_offset,u8 pit_index)3856 static int i40e_add_flex_offset(struct list_head *flex_pit_list,
3857 				u16 src_offset,
3858 				u8 pit_index)
3859 {
3860 	struct i40e_flex_pit *new_pit, *entry;
3861 
3862 	new_pit = kzalloc(sizeof(*entry), GFP_KERNEL);
3863 	if (!new_pit)
3864 		return -ENOMEM;
3865 
3866 	new_pit->src_offset = src_offset;
3867 	new_pit->pit_index = pit_index;
3868 
3869 	/* We need to insert this item such that the list is sorted by
3870 	 * src_offset in ascending order.
3871 	 */
3872 	list_for_each_entry(entry, flex_pit_list, list) {
3873 		if (new_pit->src_offset < entry->src_offset) {
3874 			list_add_tail(&new_pit->list, &entry->list);
3875 			return 0;
3876 		}
3877 
3878 		/* If we found an entry with our offset already programmed we
3879 		 * can simply return here, after freeing the memory. However,
3880 		 * if the pit_index does not match we need to report an error.
3881 		 */
3882 		if (new_pit->src_offset == entry->src_offset) {
3883 			int err = 0;
3884 
3885 			/* If the PIT index is not the same we can't re-use
3886 			 * the entry, so we must report an error.
3887 			 */
3888 			if (new_pit->pit_index != entry->pit_index)
3889 				err = -EINVAL;
3890 
3891 			kfree(new_pit);
3892 			return err;
3893 		}
3894 	}
3895 
3896 	/* If we reached here, then we haven't yet added the item. This means
3897 	 * that we should add the item at the end of the list.
3898 	 */
3899 	list_add_tail(&new_pit->list, flex_pit_list);
3900 	return 0;
3901 }
3902 
3903 /**
3904  * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table
3905  * @pf: Pointer to the PF structure
3906  * @flex_pit_list: list of flexible src offsets in use
3907  * @flex_pit_start: index to first entry for this section of the table
3908  *
3909  * In order to handle flexible data, the hardware uses a table of values
3910  * called the FLX_PIT table. This table is used to indicate which sections of
3911  * the input correspond to what PIT index values. Unfortunately, hardware is
3912  * very restrictive about programming this table. Entries must be ordered by
3913  * src_offset in ascending order, without duplicates. Additionally, unused
3914  * entries must be set to the unused index value, and must have valid size and
3915  * length according to the src_offset ordering.
3916  *
3917  * This function will reprogram the FLX_PIT register from a book-keeping
3918  * structure that we guarantee is already ordered correctly, and has no more
3919  * than 3 entries.
3920  *
3921  * To make things easier, we only support flexible values of one word length,
3922  * rather than allowing variable length flexible values.
3923  **/
__i40e_reprogram_flex_pit(struct i40e_pf * pf,struct list_head * flex_pit_list,int flex_pit_start)3924 static void __i40e_reprogram_flex_pit(struct i40e_pf *pf,
3925 				      struct list_head *flex_pit_list,
3926 				      int flex_pit_start)
3927 {
3928 	struct i40e_flex_pit *entry = NULL;
3929 	u16 last_offset = 0;
3930 	int i = 0, j = 0;
3931 
3932 	/* First, loop over the list of flex PIT entries, and reprogram the
3933 	 * registers.
3934 	 */
3935 	list_for_each_entry(entry, flex_pit_list, list) {
3936 		/* We have to be careful when programming values for the
3937 		 * largest SRC_OFFSET value. It is possible that adding
3938 		 * additional empty values at the end would overflow the space
3939 		 * for the SRC_OFFSET in the FLX_PIT register. To avoid this,
3940 		 * we check here and add the empty values prior to adding the
3941 		 * largest value.
3942 		 *
3943 		 * To determine this, we will use a loop from i+1 to 3, which
3944 		 * will determine whether the unused entries would have valid
3945 		 * SRC_OFFSET. Note that there cannot be extra entries past
3946 		 * this value, because the only valid values would have been
3947 		 * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not
3948 		 * have been added to the list in the first place.
3949 		 */
3950 		for (j = i + 1; j < 3; j++) {
3951 			u16 offset = entry->src_offset + j;
3952 			int index = flex_pit_start + i;
3953 			u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3954 						       1,
3955 						       offset - 3);
3956 
3957 			if (offset > I40E_MAX_FLEX_SRC_OFFSET) {
3958 				i40e_write_rx_ctl(&pf->hw,
3959 						  I40E_PRTQF_FLX_PIT(index),
3960 						  value);
3961 				i++;
3962 			}
3963 		}
3964 
3965 		/* Now, we can program the actual value into the table */
3966 		i40e_write_rx_ctl(&pf->hw,
3967 				  I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3968 				  I40E_FLEX_PREP_VAL(entry->pit_index + 50,
3969 						     1,
3970 						     entry->src_offset));
3971 		i++;
3972 	}
3973 
3974 	/* In order to program the last entries in the table, we need to
3975 	 * determine the valid offset. If the list is empty, we'll just start
3976 	 * with 0. Otherwise, we'll start with the last item offset and add 1.
3977 	 * This ensures that all entries have valid sizes. If we don't do this
3978 	 * correctly, the hardware will disable flexible field parsing.
3979 	 */
3980 	if (!list_empty(flex_pit_list))
3981 		last_offset = list_prev_entry(entry, list)->src_offset + 1;
3982 
3983 	for (; i < 3; i++, last_offset++) {
3984 		i40e_write_rx_ctl(&pf->hw,
3985 				  I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3986 				  I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3987 						     1,
3988 						     last_offset));
3989 	}
3990 }
3991 
3992 /**
3993  * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change
3994  * @pf: pointer to the PF structure
3995  *
3996  * This function reprograms both the L3 and L4 FLX_PIT tables. See the
3997  * internal helper function for implementation details.
3998  **/
i40e_reprogram_flex_pit(struct i40e_pf * pf)3999 static void i40e_reprogram_flex_pit(struct i40e_pf *pf)
4000 {
4001 	__i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list,
4002 				  I40E_FLEX_PIT_IDX_START_L3);
4003 
4004 	__i40e_reprogram_flex_pit(pf, &pf->l4_flex_pit_list,
4005 				  I40E_FLEX_PIT_IDX_START_L4);
4006 
4007 	/* We also need to program the L3 and L4 GLQF ORT register */
4008 	i40e_write_rx_ctl(&pf->hw,
4009 			  I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX),
4010 			  I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3,
4011 					    3, 1));
4012 
4013 	i40e_write_rx_ctl(&pf->hw,
4014 			  I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX),
4015 			  I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4,
4016 					    3, 1));
4017 }
4018 
4019 /**
4020  * i40e_flow_str - Converts a flow_type into a human readable string
4021  * @fsp: the flow specification
4022  *
4023  * Currently only flow types we support are included here, and the string
4024  * value attempts to match what ethtool would use to configure this flow type.
4025  **/
i40e_flow_str(struct ethtool_rx_flow_spec * fsp)4026 static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp)
4027 {
4028 	switch (fsp->flow_type & ~FLOW_EXT) {
4029 	case TCP_V4_FLOW:
4030 		return "tcp4";
4031 	case UDP_V4_FLOW:
4032 		return "udp4";
4033 	case SCTP_V4_FLOW:
4034 		return "sctp4";
4035 	case IP_USER_FLOW:
4036 		return "ip4";
4037 	case TCP_V6_FLOW:
4038 		return "tcp6";
4039 	case UDP_V6_FLOW:
4040 		return "udp6";
4041 	case SCTP_V6_FLOW:
4042 		return "sctp6";
4043 	case IPV6_USER_FLOW:
4044 		return "ip6";
4045 	default:
4046 		return "unknown";
4047 	}
4048 }
4049 
4050 /**
4051  * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index
4052  * @pit_index: PIT index to convert
4053  *
4054  * Returns the mask for a given PIT index. Will return 0 if the pit_index is
4055  * of range.
4056  **/
i40e_pit_index_to_mask(int pit_index)4057 static u64 i40e_pit_index_to_mask(int pit_index)
4058 {
4059 	switch (pit_index) {
4060 	case 0:
4061 		return I40E_FLEX_50_MASK;
4062 	case 1:
4063 		return I40E_FLEX_51_MASK;
4064 	case 2:
4065 		return I40E_FLEX_52_MASK;
4066 	case 3:
4067 		return I40E_FLEX_53_MASK;
4068 	case 4:
4069 		return I40E_FLEX_54_MASK;
4070 	case 5:
4071 		return I40E_FLEX_55_MASK;
4072 	case 6:
4073 		return I40E_FLEX_56_MASK;
4074 	case 7:
4075 		return I40E_FLEX_57_MASK;
4076 	default:
4077 		return 0;
4078 	}
4079 }
4080 
4081 /**
4082  * i40e_print_input_set - Show changes between two input sets
4083  * @vsi: the vsi being configured
4084  * @old: the old input set
4085  * @new: the new input set
4086  *
4087  * Print the difference between old and new input sets by showing which series
4088  * of words are toggled on or off. Only displays the bits we actually support
4089  * changing.
4090  **/
i40e_print_input_set(struct i40e_vsi * vsi,u64 old,u64 new)4091 static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new)
4092 {
4093 	struct i40e_pf *pf = vsi->back;
4094 	bool old_value, new_value;
4095 	int i;
4096 
4097 	old_value = !!(old & I40E_L3_SRC_MASK);
4098 	new_value = !!(new & I40E_L3_SRC_MASK);
4099 	if (old_value != new_value)
4100 		netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n",
4101 			   old_value ? "ON" : "OFF",
4102 			   new_value ? "ON" : "OFF");
4103 
4104 	old_value = !!(old & I40E_L3_DST_MASK);
4105 	new_value = !!(new & I40E_L3_DST_MASK);
4106 	if (old_value != new_value)
4107 		netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n",
4108 			   old_value ? "ON" : "OFF",
4109 			   new_value ? "ON" : "OFF");
4110 
4111 	old_value = !!(old & I40E_L4_SRC_MASK);
4112 	new_value = !!(new & I40E_L4_SRC_MASK);
4113 	if (old_value != new_value)
4114 		netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n",
4115 			   old_value ? "ON" : "OFF",
4116 			   new_value ? "ON" : "OFF");
4117 
4118 	old_value = !!(old & I40E_L4_DST_MASK);
4119 	new_value = !!(new & I40E_L4_DST_MASK);
4120 	if (old_value != new_value)
4121 		netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n",
4122 			   old_value ? "ON" : "OFF",
4123 			   new_value ? "ON" : "OFF");
4124 
4125 	old_value = !!(old & I40E_VERIFY_TAG_MASK);
4126 	new_value = !!(new & I40E_VERIFY_TAG_MASK);
4127 	if (old_value != new_value)
4128 		netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n",
4129 			   old_value ? "ON" : "OFF",
4130 			   new_value ? "ON" : "OFF");
4131 
4132 	/* Show change of flexible filter entries */
4133 	for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) {
4134 		u64 flex_mask = i40e_pit_index_to_mask(i);
4135 
4136 		old_value = !!(old & flex_mask);
4137 		new_value = !!(new & flex_mask);
4138 		if (old_value != new_value)
4139 			netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n",
4140 				   i,
4141 				   old_value ? "ON" : "OFF",
4142 				   new_value ? "ON" : "OFF");
4143 	}
4144 
4145 	netif_info(pf, drv, vsi->netdev, "  Current input set: %0llx\n",
4146 		   old);
4147 	netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n",
4148 		   new);
4149 }
4150 
4151 /**
4152  * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid
4153  * @vsi: pointer to the targeted VSI
4154  * @fsp: pointer to Rx flow specification
4155  * @userdef: userdefined data from flow specification
4156  *
4157  * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support
4158  * for partial matches exists with a few limitations. First, hardware only
4159  * supports masking by word boundary (2 bytes) and not per individual bit.
4160  * Second, hardware is limited to using one mask for a flow type and cannot
4161  * use a separate mask for each filter.
4162  *
4163  * To support these limitations, if we already have a configured filter for
4164  * the specified type, this function enforces that new filters of the type
4165  * match the configured input set. Otherwise, if we do not have a filter of
4166  * the specified type, we allow the input set to be updated to match the
4167  * desired filter.
4168  *
4169  * To help ensure that administrators understand why filters weren't displayed
4170  * as supported, we print a diagnostic message displaying how the input set
4171  * would change and warning to delete the preexisting filters if required.
4172  *
4173  * Returns 0 on successful input set match, and a negative return code on
4174  * failure.
4175  **/
i40e_check_fdir_input_set(struct i40e_vsi * vsi,struct ethtool_rx_flow_spec * fsp,struct i40e_rx_flow_userdef * userdef)4176 static int i40e_check_fdir_input_set(struct i40e_vsi *vsi,
4177 				     struct ethtool_rx_flow_spec *fsp,
4178 				     struct i40e_rx_flow_userdef *userdef)
4179 {
4180 	static const __be32 ipv6_full_mask[4] = {cpu_to_be32(0xffffffff),
4181 		cpu_to_be32(0xffffffff), cpu_to_be32(0xffffffff),
4182 		cpu_to_be32(0xffffffff)};
4183 	struct ethtool_tcpip6_spec *tcp_ip6_spec;
4184 	struct ethtool_usrip6_spec *usr_ip6_spec;
4185 	struct ethtool_tcpip4_spec *tcp_ip4_spec;
4186 	struct ethtool_usrip4_spec *usr_ip4_spec;
4187 	struct i40e_pf *pf = vsi->back;
4188 	u64 current_mask, new_mask;
4189 	bool new_flex_offset = false;
4190 	bool flex_l3 = false;
4191 	u16 *fdir_filter_count;
4192 	u16 index, src_offset = 0;
4193 	u8 pit_index = 0;
4194 	int err;
4195 
4196 	switch (fsp->flow_type & ~FLOW_EXT) {
4197 	case SCTP_V4_FLOW:
4198 		index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
4199 		fdir_filter_count = &pf->fd_sctp4_filter_cnt;
4200 		break;
4201 	case TCP_V4_FLOW:
4202 		index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
4203 		fdir_filter_count = &pf->fd_tcp4_filter_cnt;
4204 		break;
4205 	case UDP_V4_FLOW:
4206 		index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
4207 		fdir_filter_count = &pf->fd_udp4_filter_cnt;
4208 		break;
4209 	case SCTP_V6_FLOW:
4210 		index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
4211 		fdir_filter_count = &pf->fd_sctp6_filter_cnt;
4212 		break;
4213 	case TCP_V6_FLOW:
4214 		index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
4215 		fdir_filter_count = &pf->fd_tcp6_filter_cnt;
4216 		break;
4217 	case UDP_V6_FLOW:
4218 		index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
4219 		fdir_filter_count = &pf->fd_udp6_filter_cnt;
4220 		break;
4221 	case IP_USER_FLOW:
4222 		index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
4223 		fdir_filter_count = &pf->fd_ip4_filter_cnt;
4224 		flex_l3 = true;
4225 		break;
4226 	case IPV6_USER_FLOW:
4227 		index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER;
4228 		fdir_filter_count = &pf->fd_ip6_filter_cnt;
4229 		flex_l3 = true;
4230 		break;
4231 	default:
4232 		return -EOPNOTSUPP;
4233 	}
4234 
4235 	/* Read the current input set from register memory. */
4236 	current_mask = i40e_read_fd_input_set(pf, index);
4237 	new_mask = current_mask;
4238 
4239 	/* Determine, if any, the required changes to the input set in order
4240 	 * to support the provided mask.
4241 	 *
4242 	 * Hardware only supports masking at word (2 byte) granularity and does
4243 	 * not support full bitwise masking. This implementation simplifies
4244 	 * even further and only supports fully enabled or fully disabled
4245 	 * masks for each field, even though we could split the ip4src and
4246 	 * ip4dst fields.
4247 	 */
4248 	switch (fsp->flow_type & ~FLOW_EXT) {
4249 	case SCTP_V4_FLOW:
4250 		new_mask &= ~I40E_VERIFY_TAG_MASK;
4251 		fallthrough;
4252 	case TCP_V4_FLOW:
4253 	case UDP_V4_FLOW:
4254 		tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec;
4255 
4256 		/* IPv4 source address */
4257 		if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4258 			new_mask |= I40E_L3_SRC_MASK;
4259 		else if (!tcp_ip4_spec->ip4src)
4260 			new_mask &= ~I40E_L3_SRC_MASK;
4261 		else
4262 			return -EOPNOTSUPP;
4263 
4264 		/* IPv4 destination address */
4265 		if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4266 			new_mask |= I40E_L3_DST_MASK;
4267 		else if (!tcp_ip4_spec->ip4dst)
4268 			new_mask &= ~I40E_L3_DST_MASK;
4269 		else
4270 			return -EOPNOTSUPP;
4271 
4272 		/* L4 source port */
4273 		if (tcp_ip4_spec->psrc == htons(0xFFFF))
4274 			new_mask |= I40E_L4_SRC_MASK;
4275 		else if (!tcp_ip4_spec->psrc)
4276 			new_mask &= ~I40E_L4_SRC_MASK;
4277 		else
4278 			return -EOPNOTSUPP;
4279 
4280 		/* L4 destination port */
4281 		if (tcp_ip4_spec->pdst == htons(0xFFFF))
4282 			new_mask |= I40E_L4_DST_MASK;
4283 		else if (!tcp_ip4_spec->pdst)
4284 			new_mask &= ~I40E_L4_DST_MASK;
4285 		else
4286 			return -EOPNOTSUPP;
4287 
4288 		/* Filtering on Type of Service is not supported. */
4289 		if (tcp_ip4_spec->tos)
4290 			return -EOPNOTSUPP;
4291 
4292 		break;
4293 	case SCTP_V6_FLOW:
4294 		new_mask &= ~I40E_VERIFY_TAG_MASK;
4295 		fallthrough;
4296 	case TCP_V6_FLOW:
4297 	case UDP_V6_FLOW:
4298 		tcp_ip6_spec = &fsp->m_u.tcp_ip6_spec;
4299 
4300 		/* Check if user provided IPv6 source address. */
4301 		if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6src,
4302 				    (struct in6_addr *)&ipv6_full_mask))
4303 			new_mask |= I40E_L3_V6_SRC_MASK;
4304 		else if (ipv6_addr_any((struct in6_addr *)
4305 				       &tcp_ip6_spec->ip6src))
4306 			new_mask &= ~I40E_L3_V6_SRC_MASK;
4307 		else
4308 			return -EOPNOTSUPP;
4309 
4310 		/* Check if user provided destination address. */
4311 		if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6dst,
4312 				    (struct in6_addr *)&ipv6_full_mask))
4313 			new_mask |= I40E_L3_V6_DST_MASK;
4314 		else if (ipv6_addr_any((struct in6_addr *)
4315 				       &tcp_ip6_spec->ip6dst))
4316 			new_mask &= ~I40E_L3_V6_DST_MASK;
4317 		else
4318 			return -EOPNOTSUPP;
4319 
4320 		/* L4 source port */
4321 		if (tcp_ip6_spec->psrc == htons(0xFFFF))
4322 			new_mask |= I40E_L4_SRC_MASK;
4323 		else if (!tcp_ip6_spec->psrc)
4324 			new_mask &= ~I40E_L4_SRC_MASK;
4325 		else
4326 			return -EOPNOTSUPP;
4327 
4328 		/* L4 destination port */
4329 		if (tcp_ip6_spec->pdst == htons(0xFFFF))
4330 			new_mask |= I40E_L4_DST_MASK;
4331 		else if (!tcp_ip6_spec->pdst)
4332 			new_mask &= ~I40E_L4_DST_MASK;
4333 		else
4334 			return -EOPNOTSUPP;
4335 
4336 		/* Filtering on Traffic Classes is not supported. */
4337 		if (tcp_ip6_spec->tclass)
4338 			return -EOPNOTSUPP;
4339 		break;
4340 	case IP_USER_FLOW:
4341 		usr_ip4_spec = &fsp->m_u.usr_ip4_spec;
4342 
4343 		/* IPv4 source address */
4344 		if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4345 			new_mask |= I40E_L3_SRC_MASK;
4346 		else if (!usr_ip4_spec->ip4src)
4347 			new_mask &= ~I40E_L3_SRC_MASK;
4348 		else
4349 			return -EOPNOTSUPP;
4350 
4351 		/* IPv4 destination address */
4352 		if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4353 			new_mask |= I40E_L3_DST_MASK;
4354 		else if (!usr_ip4_spec->ip4dst)
4355 			new_mask &= ~I40E_L3_DST_MASK;
4356 		else
4357 			return -EOPNOTSUPP;
4358 
4359 		/* First 4 bytes of L4 header */
4360 		if (usr_ip4_spec->l4_4_bytes == htonl(0xFFFFFFFF))
4361 			new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
4362 		else if (!usr_ip4_spec->l4_4_bytes)
4363 			new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
4364 		else
4365 			return -EOPNOTSUPP;
4366 
4367 		/* Filtering on Type of Service is not supported. */
4368 		if (usr_ip4_spec->tos)
4369 			return -EOPNOTSUPP;
4370 
4371 		/* Filtering on IP version is not supported */
4372 		if (usr_ip4_spec->ip_ver)
4373 			return -EINVAL;
4374 
4375 		/* Filtering on L4 protocol is not supported */
4376 		if (usr_ip4_spec->proto)
4377 			return -EINVAL;
4378 
4379 		break;
4380 	case IPV6_USER_FLOW:
4381 		usr_ip6_spec = &fsp->m_u.usr_ip6_spec;
4382 
4383 		/* Check if user provided IPv6 source address. */
4384 		if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6src,
4385 				    (struct in6_addr *)&ipv6_full_mask))
4386 			new_mask |= I40E_L3_V6_SRC_MASK;
4387 		else if (ipv6_addr_any((struct in6_addr *)
4388 				       &usr_ip6_spec->ip6src))
4389 			new_mask &= ~I40E_L3_V6_SRC_MASK;
4390 		else
4391 			return -EOPNOTSUPP;
4392 
4393 		/* Check if user provided destination address. */
4394 		if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6dst,
4395 				    (struct in6_addr *)&ipv6_full_mask))
4396 			new_mask |= I40E_L3_V6_DST_MASK;
4397 		else if (ipv6_addr_any((struct in6_addr *)
4398 				       &usr_ip6_spec->ip6dst))
4399 			new_mask &= ~I40E_L3_V6_DST_MASK;
4400 		else
4401 			return -EOPNOTSUPP;
4402 
4403 		if (usr_ip6_spec->l4_4_bytes == htonl(0xFFFFFFFF))
4404 			new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
4405 		else if (!usr_ip6_spec->l4_4_bytes)
4406 			new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
4407 		else
4408 			return -EOPNOTSUPP;
4409 
4410 		/* Filtering on Traffic class is not supported. */
4411 		if (usr_ip6_spec->tclass)
4412 			return -EOPNOTSUPP;
4413 
4414 		/* Filtering on L4 protocol is not supported */
4415 		if (usr_ip6_spec->l4_proto)
4416 			return -EINVAL;
4417 
4418 		break;
4419 	default:
4420 		return -EOPNOTSUPP;
4421 	}
4422 
4423 	if (fsp->flow_type & FLOW_EXT) {
4424 		/* Allow only 802.1Q and no etype defined, as
4425 		 * later it's modified to 0x8100
4426 		 */
4427 		if (fsp->h_ext.vlan_etype != htons(ETH_P_8021Q) &&
4428 		    fsp->h_ext.vlan_etype != 0)
4429 			return -EOPNOTSUPP;
4430 		if (fsp->m_ext.vlan_tci == htons(0xFFFF))
4431 			new_mask |= I40E_VLAN_SRC_MASK;
4432 		else
4433 			new_mask &= ~I40E_VLAN_SRC_MASK;
4434 	}
4435 
4436 	/* First, clear all flexible filter entries */
4437 	new_mask &= ~I40E_FLEX_INPUT_MASK;
4438 
4439 	/* If we have a flexible filter, try to add this offset to the correct
4440 	 * flexible filter PIT list. Once finished, we can update the mask.
4441 	 * If the src_offset changed, we will get a new mask value which will
4442 	 * trigger an input set change.
4443 	 */
4444 	if (userdef->flex_filter) {
4445 		struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL;
4446 
4447 		/* Flexible offset must be even, since the flexible payload
4448 		 * must be aligned on 2-byte boundary.
4449 		 */
4450 		if (userdef->flex_offset & 0x1) {
4451 			dev_warn(&pf->pdev->dev,
4452 				 "Flexible data offset must be 2-byte aligned\n");
4453 			return -EINVAL;
4454 		}
4455 
4456 		src_offset = userdef->flex_offset >> 1;
4457 
4458 		/* FLX_PIT source offset value is only so large */
4459 		if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) {
4460 			dev_warn(&pf->pdev->dev,
4461 				 "Flexible data must reside within first 64 bytes of the packet payload\n");
4462 			return -EINVAL;
4463 		}
4464 
4465 		/* See if this offset has already been programmed. If we get
4466 		 * an ERR_PTR, then the filter is not safe to add. Otherwise,
4467 		 * if we get a NULL pointer, this means we will need to add
4468 		 * the offset.
4469 		 */
4470 		flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list,
4471 						 src_offset);
4472 		if (IS_ERR(flex_pit))
4473 			return PTR_ERR(flex_pit);
4474 
4475 		/* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown)
4476 		 * packet types, and thus we need to program both L3 and L4
4477 		 * flexible values. These must have identical flexible index,
4478 		 * as otherwise we can't correctly program the input set. So
4479 		 * we'll find both an L3 and L4 index and make sure they are
4480 		 * the same.
4481 		 */
4482 		if (flex_l3) {
4483 			l3_flex_pit =
4484 				i40e_find_flex_offset(&pf->l3_flex_pit_list,
4485 						      src_offset);
4486 			if (IS_ERR(l3_flex_pit))
4487 				return PTR_ERR(l3_flex_pit);
4488 
4489 			if (flex_pit) {
4490 				/* If we already had a matching L4 entry, we
4491 				 * need to make sure that the L3 entry we
4492 				 * obtained uses the same index.
4493 				 */
4494 				if (l3_flex_pit) {
4495 					if (l3_flex_pit->pit_index !=
4496 					    flex_pit->pit_index) {
4497 						return -EINVAL;
4498 					}
4499 				} else {
4500 					new_flex_offset = true;
4501 				}
4502 			} else {
4503 				flex_pit = l3_flex_pit;
4504 			}
4505 		}
4506 
4507 		/* If we didn't find an existing flex offset, we need to
4508 		 * program a new one. However, we don't immediately program it
4509 		 * here because we will wait to program until after we check
4510 		 * that it is safe to change the input set.
4511 		 */
4512 		if (!flex_pit) {
4513 			new_flex_offset = true;
4514 			pit_index = i40e_unused_pit_index(pf);
4515 		} else {
4516 			pit_index = flex_pit->pit_index;
4517 		}
4518 
4519 		/* Update the mask with the new offset */
4520 		new_mask |= i40e_pit_index_to_mask(pit_index);
4521 	}
4522 
4523 	/* If the mask and flexible filter offsets for this filter match the
4524 	 * currently programmed values we don't need any input set change, so
4525 	 * this filter is safe to install.
4526 	 */
4527 	if (new_mask == current_mask && !new_flex_offset)
4528 		return 0;
4529 
4530 	netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n",
4531 		   i40e_flow_str(fsp));
4532 	i40e_print_input_set(vsi, current_mask, new_mask);
4533 	if (new_flex_offset) {
4534 		netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d",
4535 			   pit_index, src_offset);
4536 	}
4537 
4538 	/* Hardware input sets are global across multiple ports, so even the
4539 	 * main port cannot change them when in MFP mode as this would impact
4540 	 * any filters on the other ports.
4541 	 */
4542 	if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4543 		netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n");
4544 		return -EOPNOTSUPP;
4545 	}
4546 
4547 	/* This filter requires us to update the input set. However, hardware
4548 	 * only supports one input set per flow type, and does not support
4549 	 * separate masks for each filter. This means that we can only support
4550 	 * a single mask for all filters of a specific type.
4551 	 *
4552 	 * If we have preexisting filters, they obviously depend on the
4553 	 * current programmed input set. Display a diagnostic message in this
4554 	 * case explaining why the filter could not be accepted.
4555 	 */
4556 	if (*fdir_filter_count) {
4557 		netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n",
4558 			  i40e_flow_str(fsp),
4559 			  *fdir_filter_count);
4560 		return -EOPNOTSUPP;
4561 	}
4562 
4563 	i40e_write_fd_input_set(pf, index, new_mask);
4564 
4565 	/* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented
4566 	 * frames. If we're programming the input set for IPv4/Other, we also
4567 	 * need to program the IPv4/Fragmented input set. Since we don't have
4568 	 * separate support, we'll always assume and enforce that the two flow
4569 	 * types must have matching input sets.
4570 	 */
4571 	if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER)
4572 		i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
4573 					new_mask);
4574 
4575 	/* Add the new offset and update table, if necessary */
4576 	if (new_flex_offset) {
4577 		err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset,
4578 					   pit_index);
4579 		if (err)
4580 			return err;
4581 
4582 		if (flex_l3) {
4583 			err = i40e_add_flex_offset(&pf->l3_flex_pit_list,
4584 						   src_offset,
4585 						   pit_index);
4586 			if (err)
4587 				return err;
4588 		}
4589 
4590 		i40e_reprogram_flex_pit(pf);
4591 	}
4592 
4593 	return 0;
4594 }
4595 
4596 /**
4597  * i40e_match_fdir_filter - Return true of two filters match
4598  * @a: pointer to filter struct
4599  * @b: pointer to filter struct
4600  *
4601  * Returns true if the two filters match exactly the same criteria. I.e. they
4602  * match the same flow type and have the same parameters. We don't need to
4603  * check any input-set since all filters of the same flow type must use the
4604  * same input set.
4605  **/
i40e_match_fdir_filter(struct i40e_fdir_filter * a,struct i40e_fdir_filter * b)4606 static bool i40e_match_fdir_filter(struct i40e_fdir_filter *a,
4607 				   struct i40e_fdir_filter *b)
4608 {
4609 	/* The filters do not much if any of these criteria differ. */
4610 	if (a->dst_ip != b->dst_ip ||
4611 	    a->src_ip != b->src_ip ||
4612 	    a->dst_port != b->dst_port ||
4613 	    a->src_port != b->src_port ||
4614 	    a->flow_type != b->flow_type ||
4615 	    a->ipl4_proto != b->ipl4_proto ||
4616 	    a->vlan_tag != b->vlan_tag ||
4617 	    a->vlan_etype != b->vlan_etype)
4618 		return false;
4619 
4620 	return true;
4621 }
4622 
4623 /**
4624  * i40e_disallow_matching_filters - Check that new filters differ
4625  * @vsi: pointer to the targeted VSI
4626  * @input: new filter to check
4627  *
4628  * Due to hardware limitations, it is not possible for two filters that match
4629  * similar criteria to be programmed at the same time. This is true for a few
4630  * reasons:
4631  *
4632  * (a) all filters matching a particular flow type must use the same input
4633  * set, that is they must match the same criteria.
4634  * (b) different flow types will never match the same packet, as the flow type
4635  * is decided by hardware before checking which rules apply.
4636  * (c) hardware has no way to distinguish which order filters apply in.
4637  *
4638  * Due to this, we can't really support using the location data to order
4639  * filters in the hardware parsing. It is technically possible for the user to
4640  * request two filters matching the same criteria but which select different
4641  * queues. In this case, rather than keep both filters in the list, we reject
4642  * the 2nd filter when the user requests adding it.
4643  *
4644  * This avoids needing to track location for programming the filter to
4645  * hardware, and ensures that we avoid some strange scenarios involving
4646  * deleting filters which match the same criteria.
4647  **/
i40e_disallow_matching_filters(struct i40e_vsi * vsi,struct i40e_fdir_filter * input)4648 static int i40e_disallow_matching_filters(struct i40e_vsi *vsi,
4649 					  struct i40e_fdir_filter *input)
4650 {
4651 	struct i40e_pf *pf = vsi->back;
4652 	struct i40e_fdir_filter *rule;
4653 	struct hlist_node *node2;
4654 
4655 	/* Loop through every filter, and check that it doesn't match */
4656 	hlist_for_each_entry_safe(rule, node2,
4657 				  &pf->fdir_filter_list, fdir_node) {
4658 		/* Don't check the filters match if they share the same fd_id,
4659 		 * since the new filter is actually just updating the target
4660 		 * of the old filter.
4661 		 */
4662 		if (rule->fd_id == input->fd_id)
4663 			continue;
4664 
4665 		/* If any filters match, then print a warning message to the
4666 		 * kernel message buffer and bail out.
4667 		 */
4668 		if (i40e_match_fdir_filter(rule, input)) {
4669 			dev_warn(&pf->pdev->dev,
4670 				 "Existing user defined filter %d already matches this flow.\n",
4671 				 rule->fd_id);
4672 			return -EINVAL;
4673 		}
4674 	}
4675 
4676 	return 0;
4677 }
4678 
4679 /**
4680  * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
4681  * @vsi: pointer to the targeted VSI
4682  * @cmd: command to get or set RX flow classification rules
4683  *
4684  * Add Flow Director filters for a specific flow spec based on their
4685  * protocol.  Returns 0 if the filters were successfully added.
4686  **/
i40e_add_fdir_ethtool(struct i40e_vsi * vsi,struct ethtool_rxnfc * cmd)4687 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
4688 				 struct ethtool_rxnfc *cmd)
4689 {
4690 	struct i40e_rx_flow_userdef userdef;
4691 	struct ethtool_rx_flow_spec *fsp;
4692 	struct i40e_fdir_filter *input;
4693 	u16 dest_vsi = 0, q_index = 0;
4694 	struct i40e_pf *pf;
4695 	int ret = -EINVAL;
4696 	u8 dest_ctl;
4697 
4698 	if (!vsi)
4699 		return -EINVAL;
4700 	pf = vsi->back;
4701 
4702 	if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
4703 		return -EOPNOTSUPP;
4704 
4705 	if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
4706 		return -ENOSPC;
4707 
4708 	if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
4709 	    test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
4710 		return -EBUSY;
4711 
4712 	if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
4713 		return -EBUSY;
4714 
4715 	fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
4716 
4717 	/* Parse the user-defined field */
4718 	if (i40e_parse_rx_flow_user_data(fsp, &userdef))
4719 		return -EINVAL;
4720 
4721 	/* Extended MAC field is not supported */
4722 	if (fsp->flow_type & FLOW_MAC_EXT)
4723 		return -EINVAL;
4724 
4725 	ret = i40e_check_fdir_input_set(vsi, fsp, &userdef);
4726 	if (ret)
4727 		return ret;
4728 
4729 	if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
4730 			      pf->hw.func_caps.fd_filters_guaranteed)) {
4731 		return -EINVAL;
4732 	}
4733 
4734 	/* ring_cookie is either the drop index, or is a mask of the queue
4735 	 * index and VF id we wish to target.
4736 	 */
4737 	if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
4738 		dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4739 	} else {
4740 		u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie);
4741 		u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie);
4742 
4743 		if (!vf) {
4744 			if (ring >= vsi->num_queue_pairs)
4745 				return -EINVAL;
4746 			dest_vsi = vsi->id;
4747 		} else {
4748 			/* VFs are zero-indexed, so we subtract one here */
4749 			vf--;
4750 
4751 			if (vf >= pf->num_alloc_vfs)
4752 				return -EINVAL;
4753 			if (ring >= pf->vf[vf].num_queue_pairs)
4754 				return -EINVAL;
4755 			dest_vsi = pf->vf[vf].lan_vsi_id;
4756 		}
4757 		dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
4758 		q_index = ring;
4759 	}
4760 
4761 	input = kzalloc(sizeof(*input), GFP_KERNEL);
4762 
4763 	if (!input)
4764 		return -ENOMEM;
4765 
4766 	input->fd_id = fsp->location;
4767 	input->q_index = q_index;
4768 	input->dest_vsi = dest_vsi;
4769 	input->dest_ctl = dest_ctl;
4770 	input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
4771 	input->cnt_index  = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
4772 	input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4773 	input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4774 	input->flow_type = fsp->flow_type & ~FLOW_EXT;
4775 
4776 	input->vlan_etype = fsp->h_ext.vlan_etype;
4777 	if (!fsp->m_ext.vlan_etype && fsp->h_ext.vlan_tci)
4778 		input->vlan_etype = cpu_to_be16(ETH_P_8021Q);
4779 	if (fsp->m_ext.vlan_tci && input->vlan_etype)
4780 		input->vlan_tag = fsp->h_ext.vlan_tci;
4781 	if (input->flow_type == IPV6_USER_FLOW ||
4782 	    input->flow_type == UDP_V6_FLOW ||
4783 	    input->flow_type == TCP_V6_FLOW ||
4784 	    input->flow_type == SCTP_V6_FLOW) {
4785 		/* Reverse the src and dest notion, since the HW expects them
4786 		 * to be from Tx perspective where as the input from user is
4787 		 * from Rx filter view.
4788 		 */
4789 		input->ipl4_proto = fsp->h_u.usr_ip6_spec.l4_proto;
4790 		input->dst_port = fsp->h_u.tcp_ip6_spec.psrc;
4791 		input->src_port = fsp->h_u.tcp_ip6_spec.pdst;
4792 		memcpy(input->dst_ip6, fsp->h_u.ah_ip6_spec.ip6src,
4793 		       sizeof(__be32) * 4);
4794 		memcpy(input->src_ip6, fsp->h_u.ah_ip6_spec.ip6dst,
4795 		       sizeof(__be32) * 4);
4796 	} else {
4797 		/* Reverse the src and dest notion, since the HW expects them
4798 		 * to be from Tx perspective where as the input from user is
4799 		 * from Rx filter view.
4800 		 */
4801 		input->ipl4_proto = fsp->h_u.usr_ip4_spec.proto;
4802 		input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
4803 		input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
4804 		input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4805 		input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4806 	}
4807 
4808 	if (userdef.flex_filter) {
4809 		input->flex_filter = true;
4810 		input->flex_word = cpu_to_be16(userdef.flex_word);
4811 		input->flex_offset = userdef.flex_offset;
4812 	}
4813 
4814 	/* Avoid programming two filters with identical match criteria. */
4815 	ret = i40e_disallow_matching_filters(vsi, input);
4816 	if (ret)
4817 		goto free_filter_memory;
4818 
4819 	/* Add the input filter to the fdir_input_list, possibly replacing
4820 	 * a previous filter. Do not free the input structure after adding it
4821 	 * to the list as this would cause a use-after-free bug.
4822 	 */
4823 	i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
4824 	ret = i40e_add_del_fdir(vsi, input, true);
4825 	if (ret)
4826 		goto remove_sw_rule;
4827 	return 0;
4828 
4829 remove_sw_rule:
4830 	hlist_del(&input->fdir_node);
4831 	pf->fdir_pf_active_filters--;
4832 free_filter_memory:
4833 	kfree(input);
4834 	return ret;
4835 }
4836 
4837 /**
4838  * i40e_set_rxnfc - command to set RX flow classification rules
4839  * @netdev: network interface device structure
4840  * @cmd: ethtool rxnfc command
4841  *
4842  * Returns Success if the command is supported.
4843  **/
i40e_set_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * cmd)4844 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
4845 {
4846 	struct i40e_netdev_priv *np = netdev_priv(netdev);
4847 	struct i40e_vsi *vsi = np->vsi;
4848 	struct i40e_pf *pf = vsi->back;
4849 	int ret = -EOPNOTSUPP;
4850 
4851 	switch (cmd->cmd) {
4852 	case ETHTOOL_SRXFH:
4853 		ret = i40e_set_rss_hash_opt(pf, cmd);
4854 		break;
4855 	case ETHTOOL_SRXCLSRLINS:
4856 		ret = i40e_add_fdir_ethtool(vsi, cmd);
4857 		break;
4858 	case ETHTOOL_SRXCLSRLDEL:
4859 		ret = i40e_del_fdir_entry(vsi, cmd);
4860 		break;
4861 	default:
4862 		break;
4863 	}
4864 
4865 	return ret;
4866 }
4867 
4868 /**
4869  * i40e_max_channels - get Max number of combined channels supported
4870  * @vsi: vsi pointer
4871  **/
i40e_max_channels(struct i40e_vsi * vsi)4872 static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
4873 {
4874 	/* TODO: This code assumes DCB and FD is disabled for now. */
4875 	return vsi->alloc_queue_pairs;
4876 }
4877 
4878 /**
4879  * i40e_get_channels - Get the current channels enabled and max supported etc.
4880  * @dev: network interface device structure
4881  * @ch: ethtool channels structure
4882  *
4883  * We don't support separate tx and rx queues as channels. The other count
4884  * represents how many queues are being used for control. max_combined counts
4885  * how many queue pairs we can support. They may not be mapped 1 to 1 with
4886  * q_vectors since we support a lot more queue pairs than q_vectors.
4887  **/
i40e_get_channels(struct net_device * dev,struct ethtool_channels * ch)4888 static void i40e_get_channels(struct net_device *dev,
4889 			      struct ethtool_channels *ch)
4890 {
4891 	struct i40e_netdev_priv *np = netdev_priv(dev);
4892 	struct i40e_vsi *vsi = np->vsi;
4893 	struct i40e_pf *pf = vsi->back;
4894 
4895 	/* report maximum channels */
4896 	ch->max_combined = i40e_max_channels(vsi);
4897 
4898 	/* report info for other vector */
4899 	ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
4900 	ch->max_other = ch->other_count;
4901 
4902 	/* Note: This code assumes DCB is disabled for now. */
4903 	ch->combined_count = vsi->num_queue_pairs;
4904 }
4905 
4906 /**
4907  * i40e_set_channels - Set the new channels count.
4908  * @dev: network interface device structure
4909  * @ch: ethtool channels structure
4910  *
4911  * The new channels count may not be the same as requested by the user
4912  * since it gets rounded down to a power of 2 value.
4913  **/
i40e_set_channels(struct net_device * dev,struct ethtool_channels * ch)4914 static int i40e_set_channels(struct net_device *dev,
4915 			     struct ethtool_channels *ch)
4916 {
4917 	const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4918 	struct i40e_netdev_priv *np = netdev_priv(dev);
4919 	unsigned int count = ch->combined_count;
4920 	struct i40e_vsi *vsi = np->vsi;
4921 	struct i40e_pf *pf = vsi->back;
4922 	struct i40e_fdir_filter *rule;
4923 	struct hlist_node *node2;
4924 	int new_count;
4925 	int err = 0;
4926 
4927 	/* We do not support setting channels for any other VSI at present */
4928 	if (vsi->type != I40E_VSI_MAIN)
4929 		return -EINVAL;
4930 
4931 	/* We do not support setting channels via ethtool when TCs are
4932 	 * configured through mqprio
4933 	 */
4934 	if (i40e_is_tc_mqprio_enabled(pf))
4935 		return -EINVAL;
4936 
4937 	/* verify they are not requesting separate vectors */
4938 	if (!count || ch->rx_count || ch->tx_count)
4939 		return -EINVAL;
4940 
4941 	/* verify other_count has not changed */
4942 	if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
4943 		return -EINVAL;
4944 
4945 	/* verify the number of channels does not exceed hardware limits */
4946 	if (count > i40e_max_channels(vsi))
4947 		return -EINVAL;
4948 
4949 	/* verify that the number of channels does not invalidate any current
4950 	 * flow director rules
4951 	 */
4952 	hlist_for_each_entry_safe(rule, node2,
4953 				  &pf->fdir_filter_list, fdir_node) {
4954 		if (rule->dest_ctl != drop && count <= rule->q_index) {
4955 			dev_warn(&pf->pdev->dev,
4956 				 "Existing user defined filter %d assigns flow to queue %d\n",
4957 				 rule->fd_id, rule->q_index);
4958 			err = -EINVAL;
4959 		}
4960 	}
4961 
4962 	if (err) {
4963 		dev_err(&pf->pdev->dev,
4964 			"Existing filter rules must be deleted to reduce combined channel count to %d\n",
4965 			count);
4966 		return err;
4967 	}
4968 
4969 	/* update feature limits from largest to smallest supported values */
4970 	/* TODO: Flow director limit, DCB etc */
4971 
4972 	/* use rss_reconfig to rebuild with new queue count and update traffic
4973 	 * class queue mapping
4974 	 */
4975 	new_count = i40e_reconfig_rss_queues(pf, count);
4976 	if (new_count > 0)
4977 		return 0;
4978 	else
4979 		return -EINVAL;
4980 }
4981 
4982 /**
4983  * i40e_get_rxfh_key_size - get the RSS hash key size
4984  * @netdev: network interface device structure
4985  *
4986  * Returns the table size.
4987  **/
i40e_get_rxfh_key_size(struct net_device * netdev)4988 static u32 i40e_get_rxfh_key_size(struct net_device *netdev)
4989 {
4990 	return I40E_HKEY_ARRAY_SIZE;
4991 }
4992 
4993 /**
4994  * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size
4995  * @netdev: network interface device structure
4996  *
4997  * Returns the table size.
4998  **/
i40e_get_rxfh_indir_size(struct net_device * netdev)4999 static u32 i40e_get_rxfh_indir_size(struct net_device *netdev)
5000 {
5001 	return I40E_HLUT_ARRAY_SIZE;
5002 }
5003 
5004 /**
5005  * i40e_get_rxfh - get the rx flow hash indirection table
5006  * @netdev: network interface device structure
5007  * @indir: indirection table
5008  * @key: hash key
5009  * @hfunc: hash function
5010  *
5011  * Reads the indirection table directly from the hardware. Returns 0 on
5012  * success.
5013  **/
i40e_get_rxfh(struct net_device * netdev,u32 * indir,u8 * key,u8 * hfunc)5014 static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
5015 			 u8 *hfunc)
5016 {
5017 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5018 	struct i40e_vsi *vsi = np->vsi;
5019 	u8 *lut, *seed = NULL;
5020 	int ret;
5021 	u16 i;
5022 
5023 	if (hfunc)
5024 		*hfunc = ETH_RSS_HASH_TOP;
5025 
5026 	if (!indir)
5027 		return 0;
5028 
5029 	seed = key;
5030 	lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
5031 	if (!lut)
5032 		return -ENOMEM;
5033 	ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE);
5034 	if (ret)
5035 		goto out;
5036 	for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
5037 		indir[i] = (u32)(lut[i]);
5038 
5039 out:
5040 	kfree(lut);
5041 
5042 	return ret;
5043 }
5044 
5045 /**
5046  * i40e_set_rxfh - set the rx flow hash indirection table
5047  * @netdev: network interface device structure
5048  * @indir: indirection table
5049  * @key: hash key
5050  * @hfunc: hash function to use
5051  *
5052  * Returns -EINVAL if the table specifies an invalid queue id, otherwise
5053  * returns 0 after programming the table.
5054  **/
i40e_set_rxfh(struct net_device * netdev,const u32 * indir,const u8 * key,const u8 hfunc)5055 static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir,
5056 			 const u8 *key, const u8 hfunc)
5057 {
5058 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5059 	struct i40e_vsi *vsi = np->vsi;
5060 	struct i40e_pf *pf = vsi->back;
5061 	u8 *seed = NULL;
5062 	u16 i;
5063 
5064 	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
5065 		return -EOPNOTSUPP;
5066 
5067 	if (key) {
5068 		if (!vsi->rss_hkey_user) {
5069 			vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE,
5070 						     GFP_KERNEL);
5071 			if (!vsi->rss_hkey_user)
5072 				return -ENOMEM;
5073 		}
5074 		memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE);
5075 		seed = vsi->rss_hkey_user;
5076 	}
5077 	if (!vsi->rss_lut_user) {
5078 		vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
5079 		if (!vsi->rss_lut_user)
5080 			return -ENOMEM;
5081 	}
5082 
5083 	/* Each 32 bits pointed by 'indir' is stored with a lut entry */
5084 	if (indir)
5085 		for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
5086 			vsi->rss_lut_user[i] = (u8)(indir[i]);
5087 	else
5088 		i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE,
5089 				  vsi->rss_size);
5090 
5091 	return i40e_config_rss(vsi, seed, vsi->rss_lut_user,
5092 			       I40E_HLUT_ARRAY_SIZE);
5093 }
5094 
5095 /**
5096  * i40e_get_priv_flags - report device private flags
5097  * @dev: network interface device structure
5098  *
5099  * The get string set count and the string set should be matched for each
5100  * flag returned.  Add new strings for each flag to the i40e_gstrings_priv_flags
5101  * array.
5102  *
5103  * Returns a u32 bitmap of flags.
5104  **/
i40e_get_priv_flags(struct net_device * dev)5105 static u32 i40e_get_priv_flags(struct net_device *dev)
5106 {
5107 	struct i40e_netdev_priv *np = netdev_priv(dev);
5108 	struct i40e_vsi *vsi = np->vsi;
5109 	struct i40e_pf *pf = vsi->back;
5110 	u32 i, j, ret_flags = 0;
5111 
5112 	for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
5113 		const struct i40e_priv_flags *priv_flags;
5114 
5115 		priv_flags = &i40e_gstrings_priv_flags[i];
5116 
5117 		if (priv_flags->flag & pf->flags)
5118 			ret_flags |= BIT(i);
5119 	}
5120 
5121 	if (pf->hw.pf_id != 0)
5122 		return ret_flags;
5123 
5124 	for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
5125 		const struct i40e_priv_flags *priv_flags;
5126 
5127 		priv_flags = &i40e_gl_gstrings_priv_flags[j];
5128 
5129 		if (priv_flags->flag & pf->flags)
5130 			ret_flags |= BIT(i + j);
5131 	}
5132 
5133 	return ret_flags;
5134 }
5135 
5136 /**
5137  * i40e_set_priv_flags - set private flags
5138  * @dev: network interface device structure
5139  * @flags: bit flags to be set
5140  **/
i40e_set_priv_flags(struct net_device * dev,u32 flags)5141 static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
5142 {
5143 	struct i40e_netdev_priv *np = netdev_priv(dev);
5144 	u64 orig_flags, new_flags, changed_flags;
5145 	enum i40e_admin_queue_err adq_err;
5146 	struct i40e_vsi *vsi = np->vsi;
5147 	struct i40e_pf *pf = vsi->back;
5148 	u32 reset_needed = 0;
5149 	i40e_status status;
5150 	u32 i, j;
5151 
5152 	orig_flags = READ_ONCE(pf->flags);
5153 	new_flags = orig_flags;
5154 
5155 	for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
5156 		const struct i40e_priv_flags *priv_flags;
5157 
5158 		priv_flags = &i40e_gstrings_priv_flags[i];
5159 
5160 		if (flags & BIT(i))
5161 			new_flags |= priv_flags->flag;
5162 		else
5163 			new_flags &= ~(priv_flags->flag);
5164 
5165 		/* If this is a read-only flag, it can't be changed */
5166 		if (priv_flags->read_only &&
5167 		    ((orig_flags ^ new_flags) & ~BIT(i)))
5168 			return -EOPNOTSUPP;
5169 	}
5170 
5171 	if (pf->hw.pf_id != 0)
5172 		goto flags_complete;
5173 
5174 	for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
5175 		const struct i40e_priv_flags *priv_flags;
5176 
5177 		priv_flags = &i40e_gl_gstrings_priv_flags[j];
5178 
5179 		if (flags & BIT(i + j))
5180 			new_flags |= priv_flags->flag;
5181 		else
5182 			new_flags &= ~(priv_flags->flag);
5183 
5184 		/* If this is a read-only flag, it can't be changed */
5185 		if (priv_flags->read_only &&
5186 		    ((orig_flags ^ new_flags) & ~BIT(i)))
5187 			return -EOPNOTSUPP;
5188 	}
5189 
5190 flags_complete:
5191 	changed_flags = orig_flags ^ new_flags;
5192 
5193 	if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP)
5194 		reset_needed = I40E_PF_RESET_AND_REBUILD_FLAG;
5195 	if (changed_flags & (I40E_FLAG_VEB_STATS_ENABLED |
5196 	    I40E_FLAG_LEGACY_RX | I40E_FLAG_SOURCE_PRUNING_DISABLED))
5197 		reset_needed = BIT(__I40E_PF_RESET_REQUESTED);
5198 
5199 	/* Before we finalize any flag changes, we need to perform some
5200 	 * checks to ensure that the changes are supported and safe.
5201 	 */
5202 
5203 	/* ATR eviction is not supported on all devices */
5204 	if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) &&
5205 	    !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE))
5206 		return -EOPNOTSUPP;
5207 
5208 	/* If the driver detected FW LLDP was disabled on init, this flag could
5209 	 * be set, however we do not support _changing_ the flag:
5210 	 * - on XL710 if NPAR is enabled or FW API version < 1.7
5211 	 * - on X722 with FW API version < 1.6
5212 	 * There are situations where older FW versions/NPAR enabled PFs could
5213 	 * disable LLDP, however we _must_ not allow the user to enable/disable
5214 	 * LLDP with this flag on unsupported FW versions.
5215 	 */
5216 	if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5217 		if (!(pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE)) {
5218 			dev_warn(&pf->pdev->dev,
5219 				 "Device does not support changing FW LLDP\n");
5220 			return -EOPNOTSUPP;
5221 		}
5222 	}
5223 
5224 	if (changed_flags & I40E_FLAG_RS_FEC &&
5225 	    pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
5226 	    pf->hw.device_id != I40E_DEV_ID_25G_B) {
5227 		dev_warn(&pf->pdev->dev,
5228 			 "Device does not support changing FEC configuration\n");
5229 		return -EOPNOTSUPP;
5230 	}
5231 
5232 	if (changed_flags & I40E_FLAG_BASE_R_FEC &&
5233 	    pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
5234 	    pf->hw.device_id != I40E_DEV_ID_25G_B &&
5235 	    pf->hw.device_id != I40E_DEV_ID_KX_X722) {
5236 		dev_warn(&pf->pdev->dev,
5237 			 "Device does not support changing FEC configuration\n");
5238 		return -EOPNOTSUPP;
5239 	}
5240 
5241 	/* Process any additional changes needed as a result of flag changes.
5242 	 * The changed_flags value reflects the list of bits that were
5243 	 * changed in the code above.
5244 	 */
5245 
5246 	/* Flush current ATR settings if ATR was disabled */
5247 	if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) &&
5248 	    !(new_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5249 		set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
5250 		set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
5251 	}
5252 
5253 	if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) {
5254 		u16 sw_flags = 0, valid_flags = 0;
5255 		int ret;
5256 
5257 		if (!(new_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
5258 			sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
5259 		valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
5260 		ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags,
5261 						0, NULL);
5262 		if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
5263 			dev_info(&pf->pdev->dev,
5264 				 "couldn't set switch config bits, err %s aq_err %s\n",
5265 				 i40e_stat_str(&pf->hw, ret),
5266 				 i40e_aq_str(&pf->hw,
5267 					     pf->hw.aq.asq_last_status));
5268 			/* not a fatal problem, just keep going */
5269 		}
5270 	}
5271 
5272 	if ((changed_flags & I40E_FLAG_RS_FEC) ||
5273 	    (changed_flags & I40E_FLAG_BASE_R_FEC)) {
5274 		u8 fec_cfg = 0;
5275 
5276 		if (new_flags & I40E_FLAG_RS_FEC &&
5277 		    new_flags & I40E_FLAG_BASE_R_FEC) {
5278 			fec_cfg = I40E_AQ_SET_FEC_AUTO;
5279 		} else if (new_flags & I40E_FLAG_RS_FEC) {
5280 			fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
5281 				   I40E_AQ_SET_FEC_ABILITY_RS);
5282 		} else if (new_flags & I40E_FLAG_BASE_R_FEC) {
5283 			fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
5284 				   I40E_AQ_SET_FEC_ABILITY_KR);
5285 		}
5286 		if (i40e_set_fec_cfg(dev, fec_cfg))
5287 			dev_warn(&pf->pdev->dev, "Cannot change FEC config\n");
5288 	}
5289 
5290 	if ((changed_flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
5291 	    (orig_flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)) {
5292 		dev_err(&pf->pdev->dev,
5293 			"Setting link-down-on-close not supported on this port (because total-port-shutdown is enabled)\n");
5294 		return -EOPNOTSUPP;
5295 	}
5296 
5297 	if ((changed_flags & new_flags &
5298 	     I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
5299 	    (new_flags & I40E_FLAG_MFP_ENABLED))
5300 		dev_warn(&pf->pdev->dev,
5301 			 "Turning on link-down-on-close flag may affect other partitions\n");
5302 
5303 	if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5304 		if (new_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5305 #ifdef CONFIG_I40E_DCB
5306 			i40e_dcb_sw_default_config(pf);
5307 #endif /* CONFIG_I40E_DCB */
5308 			i40e_aq_cfg_lldp_mib_change_event(&pf->hw, false, NULL);
5309 			i40e_aq_stop_lldp(&pf->hw, true, false, NULL);
5310 		} else {
5311 			status = i40e_aq_start_lldp(&pf->hw, false, NULL);
5312 			if (status) {
5313 				adq_err = pf->hw.aq.asq_last_status;
5314 				switch (adq_err) {
5315 				case I40E_AQ_RC_EEXIST:
5316 					dev_warn(&pf->pdev->dev,
5317 						 "FW LLDP agent is already running\n");
5318 					reset_needed = 0;
5319 					break;
5320 				case I40E_AQ_RC_EPERM:
5321 					dev_warn(&pf->pdev->dev,
5322 						 "Device configuration forbids SW from starting the LLDP agent.\n");
5323 					return -EINVAL;
5324 				case I40E_AQ_RC_EAGAIN:
5325 					dev_warn(&pf->pdev->dev,
5326 						 "Stop FW LLDP agent command is still being processed, please try again in a second.\n");
5327 					return -EBUSY;
5328 				default:
5329 					dev_warn(&pf->pdev->dev,
5330 						 "Starting FW LLDP agent failed: error: %s, %s\n",
5331 						 i40e_stat_str(&pf->hw,
5332 							       status),
5333 						 i40e_aq_str(&pf->hw,
5334 							     adq_err));
5335 					return -EINVAL;
5336 				}
5337 			}
5338 		}
5339 	}
5340 
5341 	/* Now that we've checked to ensure that the new flags are valid, load
5342 	 * them into place. Since we only modify flags either (a) during
5343 	 * initialization or (b) while holding the RTNL lock, we don't need
5344 	 * anything fancy here.
5345 	 */
5346 	pf->flags = new_flags;
5347 
5348 	/* Issue reset to cause things to take effect, as additional bits
5349 	 * are added we will need to create a mask of bits requiring reset
5350 	 */
5351 	if (reset_needed)
5352 		i40e_do_reset(pf, reset_needed, true);
5353 
5354 	return 0;
5355 }
5356 
5357 /**
5358  * i40e_get_module_info - get (Q)SFP+ module type info
5359  * @netdev: network interface device structure
5360  * @modinfo: module EEPROM size and layout information structure
5361  **/
i40e_get_module_info(struct net_device * netdev,struct ethtool_modinfo * modinfo)5362 static int i40e_get_module_info(struct net_device *netdev,
5363 				struct ethtool_modinfo *modinfo)
5364 {
5365 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5366 	struct i40e_vsi *vsi = np->vsi;
5367 	struct i40e_pf *pf = vsi->back;
5368 	struct i40e_hw *hw = &pf->hw;
5369 	u32 sff8472_comp = 0;
5370 	u32 sff8472_swap = 0;
5371 	u32 sff8636_rev = 0;
5372 	i40e_status status;
5373 	u32 type = 0;
5374 
5375 	/* Check if firmware supports reading module EEPROM. */
5376 	if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) {
5377 		netdev_err(vsi->netdev, "Module EEPROM memory read not supported. Please update the NVM image.\n");
5378 		return -EINVAL;
5379 	}
5380 
5381 	status = i40e_update_link_info(hw);
5382 	if (status)
5383 		return -EIO;
5384 
5385 	if (hw->phy.link_info.phy_type == I40E_PHY_TYPE_EMPTY) {
5386 		netdev_err(vsi->netdev, "Cannot read module EEPROM memory. No module connected.\n");
5387 		return -EINVAL;
5388 	}
5389 
5390 	type = hw->phy.link_info.module_type[0];
5391 
5392 	switch (type) {
5393 	case I40E_MODULE_TYPE_SFP:
5394 		status = i40e_aq_get_phy_register(hw,
5395 				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5396 				I40E_I2C_EEPROM_DEV_ADDR, true,
5397 				I40E_MODULE_SFF_8472_COMP,
5398 				&sff8472_comp, NULL);
5399 		if (status)
5400 			return -EIO;
5401 
5402 		status = i40e_aq_get_phy_register(hw,
5403 				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5404 				I40E_I2C_EEPROM_DEV_ADDR, true,
5405 				I40E_MODULE_SFF_8472_SWAP,
5406 				&sff8472_swap, NULL);
5407 		if (status)
5408 			return -EIO;
5409 
5410 		/* Check if the module requires address swap to access
5411 		 * the other EEPROM memory page.
5412 		 */
5413 		if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) {
5414 			netdev_warn(vsi->netdev, "Module address swap to access page 0xA2 is not supported.\n");
5415 			modinfo->type = ETH_MODULE_SFF_8079;
5416 			modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5417 		} else if (sff8472_comp == 0x00) {
5418 			/* Module is not SFF-8472 compliant */
5419 			modinfo->type = ETH_MODULE_SFF_8079;
5420 			modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5421 		} else if (!(sff8472_swap & I40E_MODULE_SFF_DDM_IMPLEMENTED)) {
5422 			/* Module is SFF-8472 compliant but doesn't implement
5423 			 * Digital Diagnostic Monitoring (DDM).
5424 			 */
5425 			modinfo->type = ETH_MODULE_SFF_8079;
5426 			modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5427 		} else {
5428 			modinfo->type = ETH_MODULE_SFF_8472;
5429 			modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
5430 		}
5431 		break;
5432 	case I40E_MODULE_TYPE_QSFP_PLUS:
5433 		/* Read from memory page 0. */
5434 		status = i40e_aq_get_phy_register(hw,
5435 				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5436 				0, true,
5437 				I40E_MODULE_REVISION_ADDR,
5438 				&sff8636_rev, NULL);
5439 		if (status)
5440 			return -EIO;
5441 		/* Determine revision compliance byte */
5442 		if (sff8636_rev > 0x02) {
5443 			/* Module is SFF-8636 compliant */
5444 			modinfo->type = ETH_MODULE_SFF_8636;
5445 			modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5446 		} else {
5447 			modinfo->type = ETH_MODULE_SFF_8436;
5448 			modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5449 		}
5450 		break;
5451 	case I40E_MODULE_TYPE_QSFP28:
5452 		modinfo->type = ETH_MODULE_SFF_8636;
5453 		modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5454 		break;
5455 	default:
5456 		netdev_err(vsi->netdev, "Module type unrecognized\n");
5457 		return -EINVAL;
5458 	}
5459 	return 0;
5460 }
5461 
5462 /**
5463  * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents
5464  * @netdev: network interface device structure
5465  * @ee: EEPROM dump request structure
5466  * @data: buffer to be filled with EEPROM contents
5467  **/
i40e_get_module_eeprom(struct net_device * netdev,struct ethtool_eeprom * ee,u8 * data)5468 static int i40e_get_module_eeprom(struct net_device *netdev,
5469 				  struct ethtool_eeprom *ee,
5470 				  u8 *data)
5471 {
5472 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5473 	struct i40e_vsi *vsi = np->vsi;
5474 	struct i40e_pf *pf = vsi->back;
5475 	struct i40e_hw *hw = &pf->hw;
5476 	bool is_sfp = false;
5477 	i40e_status status;
5478 	u32 value = 0;
5479 	int i;
5480 
5481 	if (!ee || !ee->len || !data)
5482 		return -EINVAL;
5483 
5484 	if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP)
5485 		is_sfp = true;
5486 
5487 	for (i = 0; i < ee->len; i++) {
5488 		u32 offset = i + ee->offset;
5489 		u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0;
5490 
5491 		/* Check if we need to access the other memory page */
5492 		if (is_sfp) {
5493 			if (offset >= ETH_MODULE_SFF_8079_LEN) {
5494 				offset -= ETH_MODULE_SFF_8079_LEN;
5495 				addr = I40E_I2C_EEPROM_DEV_ADDR2;
5496 			}
5497 		} else {
5498 			while (offset >= ETH_MODULE_SFF_8436_LEN) {
5499 				/* Compute memory page number and offset. */
5500 				offset -= ETH_MODULE_SFF_8436_LEN / 2;
5501 				addr++;
5502 			}
5503 		}
5504 
5505 		status = i40e_aq_get_phy_register(hw,
5506 				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5507 				addr, true, offset, &value, NULL);
5508 		if (status)
5509 			return -EIO;
5510 		data[i] = value;
5511 	}
5512 	return 0;
5513 }
5514 
i40e_get_eee(struct net_device * netdev,struct ethtool_eee * edata)5515 static int i40e_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
5516 {
5517 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5518 	struct i40e_aq_get_phy_abilities_resp phy_cfg;
5519 	enum i40e_status_code status = 0;
5520 	struct i40e_vsi *vsi = np->vsi;
5521 	struct i40e_pf *pf = vsi->back;
5522 	struct i40e_hw *hw = &pf->hw;
5523 
5524 	/* Get initial PHY capabilities */
5525 	status = i40e_aq_get_phy_capabilities(hw, false, true, &phy_cfg, NULL);
5526 	if (status)
5527 		return -EAGAIN;
5528 
5529 	/* Check whether NIC configuration is compatible with Energy Efficient
5530 	 * Ethernet (EEE) mode.
5531 	 */
5532 	if (phy_cfg.eee_capability == 0)
5533 		return -EOPNOTSUPP;
5534 
5535 	edata->supported = SUPPORTED_Autoneg;
5536 	edata->lp_advertised = edata->supported;
5537 
5538 	/* Get current configuration */
5539 	status = i40e_aq_get_phy_capabilities(hw, false, false, &phy_cfg, NULL);
5540 	if (status)
5541 		return -EAGAIN;
5542 
5543 	edata->advertised = phy_cfg.eee_capability ? SUPPORTED_Autoneg : 0U;
5544 	edata->eee_enabled = !!edata->advertised;
5545 	edata->tx_lpi_enabled = pf->stats.tx_lpi_status;
5546 
5547 	edata->eee_active = pf->stats.tx_lpi_status && pf->stats.rx_lpi_status;
5548 
5549 	return 0;
5550 }
5551 
i40e_is_eee_param_supported(struct net_device * netdev,struct ethtool_eee * edata)5552 static int i40e_is_eee_param_supported(struct net_device *netdev,
5553 				       struct ethtool_eee *edata)
5554 {
5555 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5556 	struct i40e_vsi *vsi = np->vsi;
5557 	struct i40e_pf *pf = vsi->back;
5558 	struct i40e_ethtool_not_used {
5559 		u32 value;
5560 		const char *name;
5561 	} param[] = {
5562 		{edata->advertised & ~SUPPORTED_Autoneg, "advertise"},
5563 		{edata->tx_lpi_timer, "tx-timer"},
5564 		{edata->tx_lpi_enabled != pf->stats.tx_lpi_status, "tx-lpi"}
5565 	};
5566 	int i;
5567 
5568 	for (i = 0; i < ARRAY_SIZE(param); i++) {
5569 		if (param[i].value) {
5570 			netdev_info(netdev,
5571 				    "EEE setting %s not supported\n",
5572 				    param[i].name);
5573 			return -EOPNOTSUPP;
5574 		}
5575 	}
5576 
5577 	return 0;
5578 }
5579 
i40e_set_eee(struct net_device * netdev,struct ethtool_eee * edata)5580 static int i40e_set_eee(struct net_device *netdev, struct ethtool_eee *edata)
5581 {
5582 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5583 	struct i40e_aq_get_phy_abilities_resp abilities;
5584 	enum i40e_status_code status = I40E_SUCCESS;
5585 	struct i40e_aq_set_phy_config config;
5586 	struct i40e_vsi *vsi = np->vsi;
5587 	struct i40e_pf *pf = vsi->back;
5588 	struct i40e_hw *hw = &pf->hw;
5589 	__le16 eee_capability;
5590 
5591 	/* Deny parameters we don't support */
5592 	if (i40e_is_eee_param_supported(netdev, edata))
5593 		return -EOPNOTSUPP;
5594 
5595 	/* Get initial PHY capabilities */
5596 	status = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
5597 					      NULL);
5598 	if (status)
5599 		return -EAGAIN;
5600 
5601 	/* Check whether NIC configuration is compatible with Energy Efficient
5602 	 * Ethernet (EEE) mode.
5603 	 */
5604 	if (abilities.eee_capability == 0)
5605 		return -EOPNOTSUPP;
5606 
5607 	/* Cache initial EEE capability */
5608 	eee_capability = abilities.eee_capability;
5609 
5610 	/* Get current PHY configuration */
5611 	status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
5612 					      NULL);
5613 	if (status)
5614 		return -EAGAIN;
5615 
5616 	/* Cache current PHY configuration */
5617 	config.phy_type = abilities.phy_type;
5618 	config.phy_type_ext = abilities.phy_type_ext;
5619 	config.link_speed = abilities.link_speed;
5620 	config.abilities = abilities.abilities |
5621 			   I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
5622 	config.eeer = abilities.eeer_val;
5623 	config.low_power_ctrl = abilities.d3_lpan;
5624 	config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
5625 			    I40E_AQ_PHY_FEC_CONFIG_MASK;
5626 
5627 	/* Set desired EEE state */
5628 	if (edata->eee_enabled) {
5629 		config.eee_capability = eee_capability;
5630 		config.eeer |= cpu_to_le32(I40E_PRTPM_EEER_TX_LPI_EN_MASK);
5631 	} else {
5632 		config.eee_capability = 0;
5633 		config.eeer &= cpu_to_le32(~I40E_PRTPM_EEER_TX_LPI_EN_MASK);
5634 	}
5635 
5636 	/* Apply modified PHY configuration */
5637 	status = i40e_aq_set_phy_config(hw, &config, NULL);
5638 	if (status)
5639 		return -EAGAIN;
5640 
5641 	return 0;
5642 }
5643 
5644 static const struct ethtool_ops i40e_ethtool_recovery_mode_ops = {
5645 	.get_drvinfo		= i40e_get_drvinfo,
5646 	.set_eeprom		= i40e_set_eeprom,
5647 	.get_eeprom_len		= i40e_get_eeprom_len,
5648 	.get_eeprom		= i40e_get_eeprom,
5649 };
5650 
5651 static const struct ethtool_ops i40e_ethtool_ops = {
5652 	.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
5653 				     ETHTOOL_COALESCE_MAX_FRAMES_IRQ |
5654 				     ETHTOOL_COALESCE_USE_ADAPTIVE |
5655 				     ETHTOOL_COALESCE_RX_USECS_HIGH |
5656 				     ETHTOOL_COALESCE_TX_USECS_HIGH,
5657 	.get_drvinfo		= i40e_get_drvinfo,
5658 	.get_regs_len		= i40e_get_regs_len,
5659 	.get_regs		= i40e_get_regs,
5660 	.nway_reset		= i40e_nway_reset,
5661 	.get_link		= ethtool_op_get_link,
5662 	.get_wol		= i40e_get_wol,
5663 	.set_wol		= i40e_set_wol,
5664 	.set_eeprom		= i40e_set_eeprom,
5665 	.get_eeprom_len		= i40e_get_eeprom_len,
5666 	.get_eeprom		= i40e_get_eeprom,
5667 	.get_ringparam		= i40e_get_ringparam,
5668 	.set_ringparam		= i40e_set_ringparam,
5669 	.get_pauseparam		= i40e_get_pauseparam,
5670 	.set_pauseparam		= i40e_set_pauseparam,
5671 	.get_msglevel		= i40e_get_msglevel,
5672 	.set_msglevel		= i40e_set_msglevel,
5673 	.get_rxnfc		= i40e_get_rxnfc,
5674 	.set_rxnfc		= i40e_set_rxnfc,
5675 	.self_test		= i40e_diag_test,
5676 	.get_strings		= i40e_get_strings,
5677 	.get_eee		= i40e_get_eee,
5678 	.set_eee		= i40e_set_eee,
5679 	.set_phys_id		= i40e_set_phys_id,
5680 	.get_sset_count		= i40e_get_sset_count,
5681 	.get_ethtool_stats	= i40e_get_ethtool_stats,
5682 	.get_coalesce		= i40e_get_coalesce,
5683 	.set_coalesce		= i40e_set_coalesce,
5684 	.get_rxfh_key_size	= i40e_get_rxfh_key_size,
5685 	.get_rxfh_indir_size	= i40e_get_rxfh_indir_size,
5686 	.get_rxfh		= i40e_get_rxfh,
5687 	.set_rxfh		= i40e_set_rxfh,
5688 	.get_channels		= i40e_get_channels,
5689 	.set_channels		= i40e_set_channels,
5690 	.get_module_info	= i40e_get_module_info,
5691 	.get_module_eeprom	= i40e_get_module_eeprom,
5692 	.get_ts_info		= i40e_get_ts_info,
5693 	.get_priv_flags		= i40e_get_priv_flags,
5694 	.set_priv_flags		= i40e_set_priv_flags,
5695 	.get_per_queue_coalesce	= i40e_get_per_queue_coalesce,
5696 	.set_per_queue_coalesce	= i40e_set_per_queue_coalesce,
5697 	.get_link_ksettings	= i40e_get_link_ksettings,
5698 	.set_link_ksettings	= i40e_set_link_ksettings,
5699 	.get_fecparam = i40e_get_fec_param,
5700 	.set_fecparam = i40e_set_fec_param,
5701 	.flash_device = i40e_ddp_flash,
5702 };
5703 
i40e_set_ethtool_ops(struct net_device * netdev)5704 void i40e_set_ethtool_ops(struct net_device *netdev)
5705 {
5706 	struct i40e_netdev_priv *np = netdev_priv(netdev);
5707 	struct i40e_pf		*pf = np->vsi->back;
5708 
5709 	if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
5710 		netdev->ethtool_ops = &i40e_ethtool_ops;
5711 	else
5712 		netdev->ethtool_ops = &i40e_ethtool_recovery_mode_ops;
5713 }
5714