1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 /* Copyright (C) 2015-2018 Netronome Systems, Inc. */
3
4 /*
5 * nfp_net_ethtool.c
6 * Netronome network device driver: ethtool support
7 * Authors: Jakub Kicinski <jakub.kicinski@netronome.com>
8 * Jason McMullan <jason.mcmullan@netronome.com>
9 * Rolf Neugebauer <rolf.neugebauer@netronome.com>
10 * Brad Petrus <brad.petrus@netronome.com>
11 */
12
13 #include <linux/bitfield.h>
14 #include <linux/kernel.h>
15 #include <linux/netdevice.h>
16 #include <linux/etherdevice.h>
17 #include <linux/interrupt.h>
18 #include <linux/pci.h>
19 #include <linux/ethtool.h>
20 #include <linux/firmware.h>
21 #include <linux/sfp.h>
22
23 #include "nfpcore/nfp.h"
24 #include "nfpcore/nfp_dev.h"
25 #include "nfpcore/nfp_nsp.h"
26 #include "nfp_app.h"
27 #include "nfp_main.h"
28 #include "nfp_net_ctrl.h"
29 #include "nfp_net_dp.h"
30 #include "nfp_net.h"
31 #include "nfp_port.h"
32 #include "nfpcore/nfp_cpp.h"
33
34 struct nfp_et_stat {
35 char name[ETH_GSTRING_LEN];
36 int off;
37 };
38
39 static const struct nfp_et_stat nfp_net_et_stats[] = {
40 /* Stats from the device */
41 { "dev_rx_discards", NFP_NET_CFG_STATS_RX_DISCARDS },
42 { "dev_rx_errors", NFP_NET_CFG_STATS_RX_ERRORS },
43 { "dev_rx_bytes", NFP_NET_CFG_STATS_RX_OCTETS },
44 { "dev_rx_uc_bytes", NFP_NET_CFG_STATS_RX_UC_OCTETS },
45 { "dev_rx_mc_bytes", NFP_NET_CFG_STATS_RX_MC_OCTETS },
46 { "dev_rx_bc_bytes", NFP_NET_CFG_STATS_RX_BC_OCTETS },
47 { "dev_rx_pkts", NFP_NET_CFG_STATS_RX_FRAMES },
48 { "dev_rx_mc_pkts", NFP_NET_CFG_STATS_RX_MC_FRAMES },
49 { "dev_rx_bc_pkts", NFP_NET_CFG_STATS_RX_BC_FRAMES },
50
51 { "dev_tx_discards", NFP_NET_CFG_STATS_TX_DISCARDS },
52 { "dev_tx_errors", NFP_NET_CFG_STATS_TX_ERRORS },
53 { "dev_tx_bytes", NFP_NET_CFG_STATS_TX_OCTETS },
54 { "dev_tx_uc_bytes", NFP_NET_CFG_STATS_TX_UC_OCTETS },
55 { "dev_tx_mc_bytes", NFP_NET_CFG_STATS_TX_MC_OCTETS },
56 { "dev_tx_bc_bytes", NFP_NET_CFG_STATS_TX_BC_OCTETS },
57 { "dev_tx_pkts", NFP_NET_CFG_STATS_TX_FRAMES },
58 { "dev_tx_mc_pkts", NFP_NET_CFG_STATS_TX_MC_FRAMES },
59 { "dev_tx_bc_pkts", NFP_NET_CFG_STATS_TX_BC_FRAMES },
60
61 { "bpf_pass_pkts", NFP_NET_CFG_STATS_APP0_FRAMES },
62 { "bpf_pass_bytes", NFP_NET_CFG_STATS_APP0_BYTES },
63 /* see comments in outro functions in nfp_bpf_jit.c to find out
64 * how different BPF modes use app-specific counters
65 */
66 { "bpf_app1_pkts", NFP_NET_CFG_STATS_APP1_FRAMES },
67 { "bpf_app1_bytes", NFP_NET_CFG_STATS_APP1_BYTES },
68 { "bpf_app2_pkts", NFP_NET_CFG_STATS_APP2_FRAMES },
69 { "bpf_app2_bytes", NFP_NET_CFG_STATS_APP2_BYTES },
70 { "bpf_app3_pkts", NFP_NET_CFG_STATS_APP3_FRAMES },
71 { "bpf_app3_bytes", NFP_NET_CFG_STATS_APP3_BYTES },
72 };
73
74 static const struct nfp_et_stat nfp_mac_et_stats[] = {
75 { "rx_octets", NFP_MAC_STATS_RX_IN_OCTETS, },
76 { "rx_frame_too_long_errors",
77 NFP_MAC_STATS_RX_FRAME_TOO_LONG_ERRORS, },
78 { "rx_range_length_errors", NFP_MAC_STATS_RX_RANGE_LENGTH_ERRORS, },
79 { "rx_vlan_received_ok", NFP_MAC_STATS_RX_VLAN_RECEIVED_OK, },
80 { "rx_errors", NFP_MAC_STATS_RX_IN_ERRORS, },
81 { "rx_broadcast_pkts", NFP_MAC_STATS_RX_IN_BROADCAST_PKTS, },
82 { "rx_drop_events", NFP_MAC_STATS_RX_DROP_EVENTS, },
83 { "rx_alignment_errors", NFP_MAC_STATS_RX_ALIGNMENT_ERRORS, },
84 { "rx_pause_mac_ctrl_frames",
85 NFP_MAC_STATS_RX_PAUSE_MAC_CTRL_FRAMES, },
86 { "rx_frames_received_ok", NFP_MAC_STATS_RX_FRAMES_RECEIVED_OK, },
87 { "rx_frame_check_sequence_errors",
88 NFP_MAC_STATS_RX_FRAME_CHECK_SEQUENCE_ERRORS, },
89 { "rx_unicast_pkts", NFP_MAC_STATS_RX_UNICAST_PKTS, },
90 { "rx_multicast_pkts", NFP_MAC_STATS_RX_MULTICAST_PKTS, },
91 { "rx_pkts", NFP_MAC_STATS_RX_PKTS, },
92 { "rx_undersize_pkts", NFP_MAC_STATS_RX_UNDERSIZE_PKTS, },
93 { "rx_pkts_64_octets", NFP_MAC_STATS_RX_PKTS_64_OCTETS, },
94 { "rx_pkts_65_to_127_octets",
95 NFP_MAC_STATS_RX_PKTS_65_TO_127_OCTETS, },
96 { "rx_pkts_128_to_255_octets",
97 NFP_MAC_STATS_RX_PKTS_128_TO_255_OCTETS, },
98 { "rx_pkts_256_to_511_octets",
99 NFP_MAC_STATS_RX_PKTS_256_TO_511_OCTETS, },
100 { "rx_pkts_512_to_1023_octets",
101 NFP_MAC_STATS_RX_PKTS_512_TO_1023_OCTETS, },
102 { "rx_pkts_1024_to_1518_octets",
103 NFP_MAC_STATS_RX_PKTS_1024_TO_1518_OCTETS, },
104 { "rx_pkts_1519_to_max_octets",
105 NFP_MAC_STATS_RX_PKTS_1519_TO_MAX_OCTETS, },
106 { "rx_jabbers", NFP_MAC_STATS_RX_JABBERS, },
107 { "rx_fragments", NFP_MAC_STATS_RX_FRAGMENTS, },
108 { "rx_oversize_pkts", NFP_MAC_STATS_RX_OVERSIZE_PKTS, },
109 { "rx_pause_frames_class0", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS0, },
110 { "rx_pause_frames_class1", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS1, },
111 { "rx_pause_frames_class2", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS2, },
112 { "rx_pause_frames_class3", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS3, },
113 { "rx_pause_frames_class4", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS4, },
114 { "rx_pause_frames_class5", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS5, },
115 { "rx_pause_frames_class6", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS6, },
116 { "rx_pause_frames_class7", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS7, },
117 { "rx_mac_ctrl_frames_received",
118 NFP_MAC_STATS_RX_MAC_CTRL_FRAMES_RECEIVED, },
119 { "rx_mac_head_drop", NFP_MAC_STATS_RX_MAC_HEAD_DROP, },
120 { "tx_queue_drop", NFP_MAC_STATS_TX_QUEUE_DROP, },
121 { "tx_octets", NFP_MAC_STATS_TX_OUT_OCTETS, },
122 { "tx_vlan_transmitted_ok", NFP_MAC_STATS_TX_VLAN_TRANSMITTED_OK, },
123 { "tx_errors", NFP_MAC_STATS_TX_OUT_ERRORS, },
124 { "tx_broadcast_pkts", NFP_MAC_STATS_TX_BROADCAST_PKTS, },
125 { "tx_pause_mac_ctrl_frames",
126 NFP_MAC_STATS_TX_PAUSE_MAC_CTRL_FRAMES, },
127 { "tx_frames_transmitted_ok",
128 NFP_MAC_STATS_TX_FRAMES_TRANSMITTED_OK, },
129 { "tx_unicast_pkts", NFP_MAC_STATS_TX_UNICAST_PKTS, },
130 { "tx_multicast_pkts", NFP_MAC_STATS_TX_MULTICAST_PKTS, },
131 { "tx_pkts_64_octets", NFP_MAC_STATS_TX_PKTS_64_OCTETS, },
132 { "tx_pkts_65_to_127_octets",
133 NFP_MAC_STATS_TX_PKTS_65_TO_127_OCTETS, },
134 { "tx_pkts_128_to_255_octets",
135 NFP_MAC_STATS_TX_PKTS_128_TO_255_OCTETS, },
136 { "tx_pkts_256_to_511_octets",
137 NFP_MAC_STATS_TX_PKTS_256_TO_511_OCTETS, },
138 { "tx_pkts_512_to_1023_octets",
139 NFP_MAC_STATS_TX_PKTS_512_TO_1023_OCTETS, },
140 { "tx_pkts_1024_to_1518_octets",
141 NFP_MAC_STATS_TX_PKTS_1024_TO_1518_OCTETS, },
142 { "tx_pkts_1519_to_max_octets",
143 NFP_MAC_STATS_TX_PKTS_1519_TO_MAX_OCTETS, },
144 { "tx_pause_frames_class0", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS0, },
145 { "tx_pause_frames_class1", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS1, },
146 { "tx_pause_frames_class2", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS2, },
147 { "tx_pause_frames_class3", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS3, },
148 { "tx_pause_frames_class4", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS4, },
149 { "tx_pause_frames_class5", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS5, },
150 { "tx_pause_frames_class6", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS6, },
151 { "tx_pause_frames_class7", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS7, },
152 };
153
154 static const char nfp_tlv_stat_names[][ETH_GSTRING_LEN] = {
155 [1] = "dev_rx_discards",
156 [2] = "dev_rx_errors",
157 [3] = "dev_rx_bytes",
158 [4] = "dev_rx_uc_bytes",
159 [5] = "dev_rx_mc_bytes",
160 [6] = "dev_rx_bc_bytes",
161 [7] = "dev_rx_pkts",
162 [8] = "dev_rx_mc_pkts",
163 [9] = "dev_rx_bc_pkts",
164
165 [10] = "dev_tx_discards",
166 [11] = "dev_tx_errors",
167 [12] = "dev_tx_bytes",
168 [13] = "dev_tx_uc_bytes",
169 [14] = "dev_tx_mc_bytes",
170 [15] = "dev_tx_bc_bytes",
171 [16] = "dev_tx_pkts",
172 [17] = "dev_tx_mc_pkts",
173 [18] = "dev_tx_bc_pkts",
174 };
175
176 #define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats)
177 #define NN_ET_SWITCH_STATS_LEN 9
178 #define NN_RVEC_GATHER_STATS 13
179 #define NN_RVEC_PER_Q_STATS 3
180 #define NN_CTRL_PATH_STATS 4
181
182 #define SFP_SFF_REV_COMPLIANCE 1
183
nfp_net_get_nspinfo(struct nfp_app * app,char * version)184 static void nfp_net_get_nspinfo(struct nfp_app *app, char *version)
185 {
186 struct nfp_nsp *nsp;
187
188 if (!app)
189 return;
190
191 nsp = nfp_nsp_open(app->cpp);
192 if (IS_ERR(nsp))
193 return;
194
195 snprintf(version, ETHTOOL_FWVERS_LEN, "%hu.%hu",
196 nfp_nsp_get_abi_ver_major(nsp),
197 nfp_nsp_get_abi_ver_minor(nsp));
198
199 nfp_nsp_close(nsp);
200 }
201
202 static void
nfp_get_drvinfo(struct nfp_app * app,struct pci_dev * pdev,const char * vnic_version,struct ethtool_drvinfo * drvinfo)203 nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev,
204 const char *vnic_version, struct ethtool_drvinfo *drvinfo)
205 {
206 char nsp_version[ETHTOOL_FWVERS_LEN] = {};
207
208 strscpy(drvinfo->driver, dev_driver_string(&pdev->dev),
209 sizeof(drvinfo->driver));
210 nfp_net_get_nspinfo(app, nsp_version);
211 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
212 "%s %s %s %s", vnic_version, nsp_version,
213 nfp_app_mip_name(app), nfp_app_name(app));
214 }
215
216 static void
nfp_net_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)217 nfp_net_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
218 {
219 char vnic_version[ETHTOOL_FWVERS_LEN] = {};
220 struct nfp_net *nn = netdev_priv(netdev);
221
222 snprintf(vnic_version, sizeof(vnic_version), "%d.%d.%d.%d",
223 nn->fw_ver.extend, nn->fw_ver.class,
224 nn->fw_ver.major, nn->fw_ver.minor);
225 strscpy(drvinfo->bus_info, pci_name(nn->pdev),
226 sizeof(drvinfo->bus_info));
227
228 nfp_get_drvinfo(nn->app, nn->pdev, vnic_version, drvinfo);
229 }
230
231 static int
nfp_net_nway_reset(struct net_device * netdev)232 nfp_net_nway_reset(struct net_device *netdev)
233 {
234 struct nfp_eth_table_port *eth_port;
235 struct nfp_port *port;
236 int err;
237
238 port = nfp_port_from_netdev(netdev);
239 eth_port = nfp_port_get_eth_port(port);
240 if (!eth_port)
241 return -EOPNOTSUPP;
242
243 if (!netif_running(netdev))
244 return 0;
245
246 err = nfp_eth_set_configured(port->app->cpp, eth_port->index, false);
247 if (err) {
248 netdev_info(netdev, "Link down failed: %d\n", err);
249 return err;
250 }
251
252 err = nfp_eth_set_configured(port->app->cpp, eth_port->index, true);
253 if (err) {
254 netdev_info(netdev, "Link up failed: %d\n", err);
255 return err;
256 }
257
258 netdev_info(netdev, "Link reset succeeded\n");
259 return 0;
260 }
261
262 static void
nfp_app_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)263 nfp_app_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
264 {
265 struct nfp_app *app = nfp_app_from_netdev(netdev);
266
267 strscpy(drvinfo->bus_info, pci_name(app->pdev),
268 sizeof(drvinfo->bus_info));
269 nfp_get_drvinfo(app, app->pdev, "*", drvinfo);
270 }
271
272 static void
nfp_net_set_fec_link_mode(struct nfp_eth_table_port * eth_port,struct ethtool_link_ksettings * c)273 nfp_net_set_fec_link_mode(struct nfp_eth_table_port *eth_port,
274 struct ethtool_link_ksettings *c)
275 {
276 unsigned int modes;
277
278 ethtool_link_ksettings_add_link_mode(c, supported, FEC_NONE);
279 if (!nfp_eth_can_support_fec(eth_port)) {
280 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_NONE);
281 return;
282 }
283
284 modes = nfp_eth_supported_fec_modes(eth_port);
285 if (modes & NFP_FEC_BASER) {
286 ethtool_link_ksettings_add_link_mode(c, supported, FEC_BASER);
287 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_BASER);
288 }
289
290 if (modes & NFP_FEC_REED_SOLOMON) {
291 ethtool_link_ksettings_add_link_mode(c, supported, FEC_RS);
292 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_RS);
293 }
294 }
295
296 /**
297 * nfp_net_get_link_ksettings - Get Link Speed settings
298 * @netdev: network interface device structure
299 * @cmd: ethtool command
300 *
301 * Reports speed settings based on info in the BAR provided by the fw.
302 */
303 static int
nfp_net_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * cmd)304 nfp_net_get_link_ksettings(struct net_device *netdev,
305 struct ethtool_link_ksettings *cmd)
306 {
307 struct nfp_eth_table_port *eth_port;
308 struct nfp_port *port;
309 struct nfp_net *nn;
310 unsigned int speed;
311 u16 sts;
312
313 /* Init to unknowns */
314 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
315 cmd->base.port = PORT_OTHER;
316 cmd->base.speed = SPEED_UNKNOWN;
317 cmd->base.duplex = DUPLEX_UNKNOWN;
318
319 port = nfp_port_from_netdev(netdev);
320 eth_port = nfp_port_get_eth_port(port);
321 if (eth_port) {
322 ethtool_link_ksettings_add_link_mode(cmd, supported, Pause);
323 ethtool_link_ksettings_add_link_mode(cmd, advertising, Pause);
324 if (eth_port->supp_aneg) {
325 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
326 if (eth_port->aneg == NFP_ANEG_AUTO) {
327 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
328 cmd->base.autoneg = AUTONEG_ENABLE;
329 }
330 }
331 nfp_net_set_fec_link_mode(eth_port, cmd);
332 }
333
334 if (!netif_carrier_ok(netdev))
335 return 0;
336
337 /* Use link speed from ETH table if available, otherwise try the BAR */
338 if (eth_port) {
339 cmd->base.port = eth_port->port_type;
340 cmd->base.speed = eth_port->speed;
341 cmd->base.duplex = DUPLEX_FULL;
342 return 0;
343 }
344
345 if (!nfp_netdev_is_nfp_net(netdev))
346 return -EOPNOTSUPP;
347 nn = netdev_priv(netdev);
348
349 sts = nn_readw(nn, NFP_NET_CFG_STS);
350 speed = nfp_net_lr2speed(FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts));
351 if (!speed)
352 return -EOPNOTSUPP;
353
354 if (speed != SPEED_UNKNOWN) {
355 cmd->base.speed = speed;
356 cmd->base.duplex = DUPLEX_FULL;
357 }
358
359 return 0;
360 }
361
362 static int
nfp_net_set_link_ksettings(struct net_device * netdev,const struct ethtool_link_ksettings * cmd)363 nfp_net_set_link_ksettings(struct net_device *netdev,
364 const struct ethtool_link_ksettings *cmd)
365 {
366 bool req_aneg = (cmd->base.autoneg == AUTONEG_ENABLE);
367 struct nfp_eth_table_port *eth_port;
368 struct nfp_port *port;
369 struct nfp_nsp *nsp;
370 int err;
371
372 port = nfp_port_from_netdev(netdev);
373 eth_port = __nfp_port_get_eth_port(port);
374 if (!eth_port)
375 return -EOPNOTSUPP;
376
377 if (netif_running(netdev)) {
378 netdev_warn(netdev, "Changing settings not allowed on an active interface. It may cause the port to be disabled until driver reload.\n");
379 return -EBUSY;
380 }
381
382 nsp = nfp_eth_config_start(port->app->cpp, eth_port->index);
383 if (IS_ERR(nsp))
384 return PTR_ERR(nsp);
385
386 if (req_aneg && !eth_port->supp_aneg) {
387 netdev_warn(netdev, "Autoneg is not supported.\n");
388 err = -EOPNOTSUPP;
389 goto err_bad_set;
390 }
391
392 err = __nfp_eth_set_aneg(nsp, req_aneg ? NFP_ANEG_AUTO : NFP_ANEG_DISABLED);
393 if (err)
394 goto err_bad_set;
395
396 if (cmd->base.speed != SPEED_UNKNOWN) {
397 u32 speed = cmd->base.speed / eth_port->lanes;
398
399 if (req_aneg) {
400 netdev_err(netdev, "Speed changing is not allowed when working on autoneg mode.\n");
401 err = -EINVAL;
402 goto err_bad_set;
403 }
404
405 err = __nfp_eth_set_speed(nsp, speed);
406 if (err)
407 goto err_bad_set;
408 }
409
410 err = nfp_eth_config_commit_end(nsp);
411 if (err > 0)
412 return 0; /* no change */
413
414 nfp_net_refresh_port_table(port);
415
416 return err;
417
418 err_bad_set:
419 nfp_eth_config_cleanup_end(nsp);
420 return err;
421 }
422
nfp_net_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)423 static void nfp_net_get_ringparam(struct net_device *netdev,
424 struct ethtool_ringparam *ring,
425 struct kernel_ethtool_ringparam *kernel_ring,
426 struct netlink_ext_ack *extack)
427 {
428 struct nfp_net *nn = netdev_priv(netdev);
429 u32 qc_max = nn->dev_info->max_qc_size;
430
431 ring->rx_max_pending = qc_max;
432 ring->tx_max_pending = qc_max / nn->dp.ops->tx_min_desc_per_pkt;
433 ring->rx_pending = nn->dp.rxd_cnt;
434 ring->tx_pending = nn->dp.txd_cnt;
435 }
436
nfp_net_set_ring_size(struct nfp_net * nn,u32 rxd_cnt,u32 txd_cnt)437 static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt)
438 {
439 struct nfp_net_dp *dp;
440
441 dp = nfp_net_clone_dp(nn);
442 if (!dp)
443 return -ENOMEM;
444
445 dp->rxd_cnt = rxd_cnt;
446 dp->txd_cnt = txd_cnt;
447
448 return nfp_net_ring_reconfig(nn, dp, NULL);
449 }
450
nfp_net_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)451 static int nfp_net_set_ringparam(struct net_device *netdev,
452 struct ethtool_ringparam *ring,
453 struct kernel_ethtool_ringparam *kernel_ring,
454 struct netlink_ext_ack *extack)
455 {
456 u32 tx_dpp, qc_min, qc_max, rxd_cnt, txd_cnt;
457 struct nfp_net *nn = netdev_priv(netdev);
458
459 /* We don't have separate queues/rings for small/large frames. */
460 if (ring->rx_mini_pending || ring->rx_jumbo_pending)
461 return -EINVAL;
462
463 qc_min = nn->dev_info->min_qc_size;
464 qc_max = nn->dev_info->max_qc_size;
465 tx_dpp = nn->dp.ops->tx_min_desc_per_pkt;
466 /* Round up to supported values */
467 rxd_cnt = roundup_pow_of_two(ring->rx_pending);
468 txd_cnt = roundup_pow_of_two(ring->tx_pending);
469
470 if (rxd_cnt < qc_min || rxd_cnt > qc_max ||
471 txd_cnt < qc_min / tx_dpp || txd_cnt > qc_max / tx_dpp)
472 return -EINVAL;
473
474 if (nn->dp.rxd_cnt == rxd_cnt && nn->dp.txd_cnt == txd_cnt)
475 return 0;
476
477 nn_dbg(nn, "Change ring size: RxQ %u->%u, TxQ %u->%u\n",
478 nn->dp.rxd_cnt, rxd_cnt, nn->dp.txd_cnt, txd_cnt);
479
480 return nfp_net_set_ring_size(nn, rxd_cnt, txd_cnt);
481 }
482
nfp_test_link(struct net_device * netdev)483 static int nfp_test_link(struct net_device *netdev)
484 {
485 if (!netif_carrier_ok(netdev) || !(netdev->flags & IFF_UP))
486 return 1;
487
488 return 0;
489 }
490
nfp_test_nsp(struct net_device * netdev)491 static int nfp_test_nsp(struct net_device *netdev)
492 {
493 struct nfp_app *app = nfp_app_from_netdev(netdev);
494 struct nfp_nsp_identify *nspi;
495 struct nfp_nsp *nsp;
496 int err;
497
498 nsp = nfp_nsp_open(app->cpp);
499 if (IS_ERR(nsp)) {
500 err = PTR_ERR(nsp);
501 netdev_info(netdev, "NSP Test: failed to access the NSP: %d\n", err);
502 goto exit;
503 }
504
505 if (nfp_nsp_get_abi_ver_minor(nsp) < 15) {
506 err = -EOPNOTSUPP;
507 goto exit_close_nsp;
508 }
509
510 nspi = kzalloc(sizeof(*nspi), GFP_KERNEL);
511 if (!nspi) {
512 err = -ENOMEM;
513 goto exit_close_nsp;
514 }
515
516 err = nfp_nsp_read_identify(nsp, nspi, sizeof(*nspi));
517 if (err < 0)
518 netdev_info(netdev, "NSP Test: reading bsp version failed %d\n", err);
519
520 kfree(nspi);
521 exit_close_nsp:
522 nfp_nsp_close(nsp);
523 exit:
524 return err;
525 }
526
nfp_test_fw(struct net_device * netdev)527 static int nfp_test_fw(struct net_device *netdev)
528 {
529 struct nfp_net *nn = netdev_priv(netdev);
530 int err;
531
532 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_GEN);
533 if (err)
534 netdev_info(netdev, "FW Test: update failed %d\n", err);
535
536 return err;
537 }
538
nfp_test_reg(struct net_device * netdev)539 static int nfp_test_reg(struct net_device *netdev)
540 {
541 struct nfp_app *app = nfp_app_from_netdev(netdev);
542 struct nfp_cpp *cpp = app->cpp;
543 u32 model = nfp_cpp_model(cpp);
544 u32 value;
545 int err;
546
547 err = nfp_cpp_model_autodetect(cpp, &value);
548 if (err < 0) {
549 netdev_info(netdev, "REG Test: NFP model detection failed %d\n", err);
550 return err;
551 }
552
553 return (value == model) ? 0 : 1;
554 }
555
link_test_supported(struct net_device * netdev)556 static bool link_test_supported(struct net_device *netdev)
557 {
558 return true;
559 }
560
nsp_test_supported(struct net_device * netdev)561 static bool nsp_test_supported(struct net_device *netdev)
562 {
563 if (nfp_app_from_netdev(netdev))
564 return true;
565
566 return false;
567 }
568
fw_test_supported(struct net_device * netdev)569 static bool fw_test_supported(struct net_device *netdev)
570 {
571 if (nfp_netdev_is_nfp_net(netdev))
572 return true;
573
574 return false;
575 }
576
reg_test_supported(struct net_device * netdev)577 static bool reg_test_supported(struct net_device *netdev)
578 {
579 if (nfp_app_from_netdev(netdev))
580 return true;
581
582 return false;
583 }
584
585 static struct nfp_self_test_item {
586 char name[ETH_GSTRING_LEN];
587 bool (*is_supported)(struct net_device *dev);
588 int (*func)(struct net_device *dev);
589 } nfp_self_test[] = {
590 {"Link Test", link_test_supported, nfp_test_link},
591 {"NSP Test", nsp_test_supported, nfp_test_nsp},
592 {"Firmware Test", fw_test_supported, nfp_test_fw},
593 {"Register Test", reg_test_supported, nfp_test_reg}
594 };
595
596 #define NFP_TEST_TOTAL_NUM ARRAY_SIZE(nfp_self_test)
597
nfp_get_self_test_strings(struct net_device * netdev,u8 * data)598 static void nfp_get_self_test_strings(struct net_device *netdev, u8 *data)
599 {
600 int i;
601
602 for (i = 0; i < NFP_TEST_TOTAL_NUM; i++)
603 if (nfp_self_test[i].is_supported(netdev))
604 ethtool_sprintf(&data, nfp_self_test[i].name);
605 }
606
nfp_get_self_test_count(struct net_device * netdev)607 static int nfp_get_self_test_count(struct net_device *netdev)
608 {
609 int i, count = 0;
610
611 for (i = 0; i < NFP_TEST_TOTAL_NUM; i++)
612 if (nfp_self_test[i].is_supported(netdev))
613 count++;
614
615 return count;
616 }
617
nfp_net_self_test(struct net_device * netdev,struct ethtool_test * eth_test,u64 * data)618 static void nfp_net_self_test(struct net_device *netdev, struct ethtool_test *eth_test,
619 u64 *data)
620 {
621 int i, ret, count = 0;
622
623 netdev_info(netdev, "Start self test\n");
624
625 for (i = 0; i < NFP_TEST_TOTAL_NUM; i++) {
626 if (nfp_self_test[i].is_supported(netdev)) {
627 ret = nfp_self_test[i].func(netdev);
628 if (ret)
629 eth_test->flags |= ETH_TEST_FL_FAILED;
630 data[count++] = ret;
631 }
632 }
633
634 netdev_info(netdev, "Test end\n");
635 }
636
nfp_vnic_get_sw_stats_count(struct net_device * netdev)637 static unsigned int nfp_vnic_get_sw_stats_count(struct net_device *netdev)
638 {
639 struct nfp_net *nn = netdev_priv(netdev);
640
641 return NN_RVEC_GATHER_STATS + nn->max_r_vecs * NN_RVEC_PER_Q_STATS +
642 NN_CTRL_PATH_STATS;
643 }
644
nfp_vnic_get_sw_stats_strings(struct net_device * netdev,u8 * data)645 static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data)
646 {
647 struct nfp_net *nn = netdev_priv(netdev);
648 int i;
649
650 for (i = 0; i < nn->max_r_vecs; i++) {
651 ethtool_sprintf(&data, "rvec_%u_rx_pkts", i);
652 ethtool_sprintf(&data, "rvec_%u_tx_pkts", i);
653 ethtool_sprintf(&data, "rvec_%u_tx_busy", i);
654 }
655
656 ethtool_sprintf(&data, "hw_rx_csum_ok");
657 ethtool_sprintf(&data, "hw_rx_csum_inner_ok");
658 ethtool_sprintf(&data, "hw_rx_csum_complete");
659 ethtool_sprintf(&data, "hw_rx_csum_err");
660 ethtool_sprintf(&data, "rx_replace_buf_alloc_fail");
661 ethtool_sprintf(&data, "rx_tls_decrypted_packets");
662 ethtool_sprintf(&data, "hw_tx_csum");
663 ethtool_sprintf(&data, "hw_tx_inner_csum");
664 ethtool_sprintf(&data, "tx_gather");
665 ethtool_sprintf(&data, "tx_lso");
666 ethtool_sprintf(&data, "tx_tls_encrypted_packets");
667 ethtool_sprintf(&data, "tx_tls_ooo");
668 ethtool_sprintf(&data, "tx_tls_drop_no_sync_data");
669
670 ethtool_sprintf(&data, "hw_tls_no_space");
671 ethtool_sprintf(&data, "rx_tls_resync_req_ok");
672 ethtool_sprintf(&data, "rx_tls_resync_req_ign");
673 ethtool_sprintf(&data, "rx_tls_resync_sent");
674
675 return data;
676 }
677
nfp_vnic_get_sw_stats(struct net_device * netdev,u64 * data)678 static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data)
679 {
680 u64 gathered_stats[NN_RVEC_GATHER_STATS] = {};
681 struct nfp_net *nn = netdev_priv(netdev);
682 u64 tmp[NN_RVEC_GATHER_STATS];
683 unsigned int i, j;
684
685 for (i = 0; i < nn->max_r_vecs; i++) {
686 unsigned int start;
687
688 do {
689 start = u64_stats_fetch_begin_irq(&nn->r_vecs[i].rx_sync);
690 data[0] = nn->r_vecs[i].rx_pkts;
691 tmp[0] = nn->r_vecs[i].hw_csum_rx_ok;
692 tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok;
693 tmp[2] = nn->r_vecs[i].hw_csum_rx_complete;
694 tmp[3] = nn->r_vecs[i].hw_csum_rx_error;
695 tmp[4] = nn->r_vecs[i].rx_replace_buf_alloc_fail;
696 tmp[5] = nn->r_vecs[i].hw_tls_rx;
697 } while (u64_stats_fetch_retry_irq(&nn->r_vecs[i].rx_sync, start));
698
699 do {
700 start = u64_stats_fetch_begin_irq(&nn->r_vecs[i].tx_sync);
701 data[1] = nn->r_vecs[i].tx_pkts;
702 data[2] = nn->r_vecs[i].tx_busy;
703 tmp[6] = nn->r_vecs[i].hw_csum_tx;
704 tmp[7] = nn->r_vecs[i].hw_csum_tx_inner;
705 tmp[8] = nn->r_vecs[i].tx_gather;
706 tmp[9] = nn->r_vecs[i].tx_lso;
707 tmp[10] = nn->r_vecs[i].hw_tls_tx;
708 tmp[11] = nn->r_vecs[i].tls_tx_fallback;
709 tmp[12] = nn->r_vecs[i].tls_tx_no_fallback;
710 } while (u64_stats_fetch_retry_irq(&nn->r_vecs[i].tx_sync, start));
711
712 data += NN_RVEC_PER_Q_STATS;
713
714 for (j = 0; j < NN_RVEC_GATHER_STATS; j++)
715 gathered_stats[j] += tmp[j];
716 }
717
718 for (j = 0; j < NN_RVEC_GATHER_STATS; j++)
719 *data++ = gathered_stats[j];
720
721 *data++ = atomic_read(&nn->ktls_no_space);
722 *data++ = atomic_read(&nn->ktls_rx_resync_req);
723 *data++ = atomic_read(&nn->ktls_rx_resync_ign);
724 *data++ = atomic_read(&nn->ktls_rx_resync_sent);
725
726 return data;
727 }
728
nfp_vnic_get_hw_stats_count(unsigned int num_vecs)729 static unsigned int nfp_vnic_get_hw_stats_count(unsigned int num_vecs)
730 {
731 return NN_ET_GLOBAL_STATS_LEN + num_vecs * 4;
732 }
733
734 static u8 *
nfp_vnic_get_hw_stats_strings(u8 * data,unsigned int num_vecs,bool repr)735 nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int num_vecs, bool repr)
736 {
737 int swap_off, i;
738
739 BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2);
740 /* If repr is true first add SWITCH_STATS_LEN and then subtract it
741 * effectively swapping the RX and TX statistics (giving us the RX
742 * and TX from perspective of the switch).
743 */
744 swap_off = repr * NN_ET_SWITCH_STATS_LEN;
745
746 for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++)
747 ethtool_sprintf(&data, nfp_net_et_stats[i + swap_off].name);
748
749 for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++)
750 ethtool_sprintf(&data, nfp_net_et_stats[i - swap_off].name);
751
752 for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++)
753 ethtool_sprintf(&data, nfp_net_et_stats[i].name);
754
755 for (i = 0; i < num_vecs; i++) {
756 ethtool_sprintf(&data, "rxq_%u_pkts", i);
757 ethtool_sprintf(&data, "rxq_%u_bytes", i);
758 ethtool_sprintf(&data, "txq_%u_pkts", i);
759 ethtool_sprintf(&data, "txq_%u_bytes", i);
760 }
761
762 return data;
763 }
764
765 static u64 *
nfp_vnic_get_hw_stats(u64 * data,u8 __iomem * mem,unsigned int num_vecs)766 nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, unsigned int num_vecs)
767 {
768 unsigned int i;
769
770 for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++)
771 *data++ = readq(mem + nfp_net_et_stats[i].off);
772
773 for (i = 0; i < num_vecs; i++) {
774 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i));
775 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8);
776 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i));
777 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8);
778 }
779
780 return data;
781 }
782
nfp_vnic_get_tlv_stats_count(struct nfp_net * nn)783 static unsigned int nfp_vnic_get_tlv_stats_count(struct nfp_net *nn)
784 {
785 return nn->tlv_caps.vnic_stats_cnt + nn->max_r_vecs * 4;
786 }
787
nfp_vnic_get_tlv_stats_strings(struct nfp_net * nn,u8 * data)788 static u8 *nfp_vnic_get_tlv_stats_strings(struct nfp_net *nn, u8 *data)
789 {
790 unsigned int i, id;
791 u8 __iomem *mem;
792 u64 id_word = 0;
793
794 mem = nn->dp.ctrl_bar + nn->tlv_caps.vnic_stats_off;
795 for (i = 0; i < nn->tlv_caps.vnic_stats_cnt; i++) {
796 if (!(i % 4))
797 id_word = readq(mem + i * 2);
798
799 id = (u16)id_word;
800 id_word >>= 16;
801
802 if (id < ARRAY_SIZE(nfp_tlv_stat_names) &&
803 nfp_tlv_stat_names[id][0]) {
804 memcpy(data, nfp_tlv_stat_names[id], ETH_GSTRING_LEN);
805 data += ETH_GSTRING_LEN;
806 } else {
807 ethtool_sprintf(&data, "dev_unknown_stat%u", id);
808 }
809 }
810
811 for (i = 0; i < nn->max_r_vecs; i++) {
812 ethtool_sprintf(&data, "rxq_%u_pkts", i);
813 ethtool_sprintf(&data, "rxq_%u_bytes", i);
814 ethtool_sprintf(&data, "txq_%u_pkts", i);
815 ethtool_sprintf(&data, "txq_%u_bytes", i);
816 }
817
818 return data;
819 }
820
nfp_vnic_get_tlv_stats(struct nfp_net * nn,u64 * data)821 static u64 *nfp_vnic_get_tlv_stats(struct nfp_net *nn, u64 *data)
822 {
823 u8 __iomem *mem;
824 unsigned int i;
825
826 mem = nn->dp.ctrl_bar + nn->tlv_caps.vnic_stats_off;
827 mem += roundup(2 * nn->tlv_caps.vnic_stats_cnt, 8);
828 for (i = 0; i < nn->tlv_caps.vnic_stats_cnt; i++)
829 *data++ = readq(mem + i * 8);
830
831 mem = nn->dp.ctrl_bar;
832 for (i = 0; i < nn->max_r_vecs; i++) {
833 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i));
834 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8);
835 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i));
836 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8);
837 }
838
839 return data;
840 }
841
nfp_mac_get_stats_count(struct net_device * netdev)842 static unsigned int nfp_mac_get_stats_count(struct net_device *netdev)
843 {
844 struct nfp_port *port;
845
846 port = nfp_port_from_netdev(netdev);
847 if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
848 return 0;
849
850 return ARRAY_SIZE(nfp_mac_et_stats);
851 }
852
nfp_mac_get_stats_strings(struct net_device * netdev,u8 * data)853 static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data)
854 {
855 struct nfp_port *port;
856 unsigned int i;
857
858 port = nfp_port_from_netdev(netdev);
859 if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
860 return data;
861
862 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++)
863 ethtool_sprintf(&data, "mac.%s", nfp_mac_et_stats[i].name);
864
865 return data;
866 }
867
nfp_mac_get_stats(struct net_device * netdev,u64 * data)868 static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data)
869 {
870 struct nfp_port *port;
871 unsigned int i;
872
873 port = nfp_port_from_netdev(netdev);
874 if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
875 return data;
876
877 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++)
878 *data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off);
879
880 return data;
881 }
882
nfp_net_get_strings(struct net_device * netdev,u32 stringset,u8 * data)883 static void nfp_net_get_strings(struct net_device *netdev,
884 u32 stringset, u8 *data)
885 {
886 struct nfp_net *nn = netdev_priv(netdev);
887
888 switch (stringset) {
889 case ETH_SS_STATS:
890 data = nfp_vnic_get_sw_stats_strings(netdev, data);
891 if (!nn->tlv_caps.vnic_stats_off)
892 data = nfp_vnic_get_hw_stats_strings(data,
893 nn->max_r_vecs,
894 false);
895 else
896 data = nfp_vnic_get_tlv_stats_strings(nn, data);
897 data = nfp_mac_get_stats_strings(netdev, data);
898 data = nfp_app_port_get_stats_strings(nn->port, data);
899 break;
900 case ETH_SS_TEST:
901 nfp_get_self_test_strings(netdev, data);
902 break;
903 }
904 }
905
906 static void
nfp_net_get_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)907 nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats,
908 u64 *data)
909 {
910 struct nfp_net *nn = netdev_priv(netdev);
911
912 data = nfp_vnic_get_sw_stats(netdev, data);
913 if (!nn->tlv_caps.vnic_stats_off)
914 data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar,
915 nn->max_r_vecs);
916 else
917 data = nfp_vnic_get_tlv_stats(nn, data);
918 data = nfp_mac_get_stats(netdev, data);
919 data = nfp_app_port_get_stats(nn->port, data);
920 }
921
nfp_net_get_sset_count(struct net_device * netdev,int sset)922 static int nfp_net_get_sset_count(struct net_device *netdev, int sset)
923 {
924 struct nfp_net *nn = netdev_priv(netdev);
925 unsigned int cnt;
926
927 switch (sset) {
928 case ETH_SS_STATS:
929 cnt = nfp_vnic_get_sw_stats_count(netdev);
930 if (!nn->tlv_caps.vnic_stats_off)
931 cnt += nfp_vnic_get_hw_stats_count(nn->max_r_vecs);
932 else
933 cnt += nfp_vnic_get_tlv_stats_count(nn);
934 cnt += nfp_mac_get_stats_count(netdev);
935 cnt += nfp_app_port_get_stats_count(nn->port);
936 return cnt;
937 case ETH_SS_TEST:
938 return nfp_get_self_test_count(netdev);
939 default:
940 return -EOPNOTSUPP;
941 }
942 }
943
nfp_port_get_strings(struct net_device * netdev,u32 stringset,u8 * data)944 static void nfp_port_get_strings(struct net_device *netdev,
945 u32 stringset, u8 *data)
946 {
947 struct nfp_port *port = nfp_port_from_netdev(netdev);
948
949 switch (stringset) {
950 case ETH_SS_STATS:
951 if (nfp_port_is_vnic(port))
952 data = nfp_vnic_get_hw_stats_strings(data, 0, true);
953 else
954 data = nfp_mac_get_stats_strings(netdev, data);
955 data = nfp_app_port_get_stats_strings(port, data);
956 break;
957 case ETH_SS_TEST:
958 nfp_get_self_test_strings(netdev, data);
959 break;
960 }
961 }
962
963 static void
nfp_port_get_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)964 nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats,
965 u64 *data)
966 {
967 struct nfp_port *port = nfp_port_from_netdev(netdev);
968
969 if (nfp_port_is_vnic(port))
970 data = nfp_vnic_get_hw_stats(data, port->vnic, 0);
971 else
972 data = nfp_mac_get_stats(netdev, data);
973 data = nfp_app_port_get_stats(port, data);
974 }
975
nfp_port_get_sset_count(struct net_device * netdev,int sset)976 static int nfp_port_get_sset_count(struct net_device *netdev, int sset)
977 {
978 struct nfp_port *port = nfp_port_from_netdev(netdev);
979 unsigned int count;
980
981 switch (sset) {
982 case ETH_SS_STATS:
983 if (nfp_port_is_vnic(port))
984 count = nfp_vnic_get_hw_stats_count(0);
985 else
986 count = nfp_mac_get_stats_count(netdev);
987 count += nfp_app_port_get_stats_count(port);
988 return count;
989 case ETH_SS_TEST:
990 return nfp_get_self_test_count(netdev);
991 default:
992 return -EOPNOTSUPP;
993 }
994 }
995
nfp_port_fec_ethtool_to_nsp(u32 fec)996 static int nfp_port_fec_ethtool_to_nsp(u32 fec)
997 {
998 switch (fec) {
999 case ETHTOOL_FEC_AUTO:
1000 return NFP_FEC_AUTO_BIT;
1001 case ETHTOOL_FEC_OFF:
1002 return NFP_FEC_DISABLED_BIT;
1003 case ETHTOOL_FEC_RS:
1004 return NFP_FEC_REED_SOLOMON_BIT;
1005 case ETHTOOL_FEC_BASER:
1006 return NFP_FEC_BASER_BIT;
1007 default:
1008 /* NSP only supports a single mode at a time */
1009 return -EOPNOTSUPP;
1010 }
1011 }
1012
nfp_port_fec_nsp_to_ethtool(u32 fec)1013 static u32 nfp_port_fec_nsp_to_ethtool(u32 fec)
1014 {
1015 u32 result = 0;
1016
1017 if (fec & NFP_FEC_AUTO)
1018 result |= ETHTOOL_FEC_AUTO;
1019 if (fec & NFP_FEC_BASER)
1020 result |= ETHTOOL_FEC_BASER;
1021 if (fec & NFP_FEC_REED_SOLOMON)
1022 result |= ETHTOOL_FEC_RS;
1023 if (fec & NFP_FEC_DISABLED)
1024 result |= ETHTOOL_FEC_OFF;
1025
1026 return result ?: ETHTOOL_FEC_NONE;
1027 }
1028
1029 static int
nfp_port_get_fecparam(struct net_device * netdev,struct ethtool_fecparam * param)1030 nfp_port_get_fecparam(struct net_device *netdev,
1031 struct ethtool_fecparam *param)
1032 {
1033 struct nfp_eth_table_port *eth_port;
1034 struct nfp_port *port;
1035
1036 param->active_fec = ETHTOOL_FEC_NONE;
1037 param->fec = ETHTOOL_FEC_NONE;
1038
1039 port = nfp_port_from_netdev(netdev);
1040 eth_port = nfp_port_get_eth_port(port);
1041 if (!eth_port)
1042 return -EOPNOTSUPP;
1043
1044 if (!nfp_eth_can_support_fec(eth_port))
1045 return 0;
1046
1047 param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported);
1048 param->active_fec = nfp_port_fec_nsp_to_ethtool(BIT(eth_port->act_fec));
1049
1050 return 0;
1051 }
1052
1053 static int
nfp_port_set_fecparam(struct net_device * netdev,struct ethtool_fecparam * param)1054 nfp_port_set_fecparam(struct net_device *netdev,
1055 struct ethtool_fecparam *param)
1056 {
1057 struct nfp_eth_table_port *eth_port;
1058 struct nfp_port *port;
1059 int err, fec;
1060
1061 port = nfp_port_from_netdev(netdev);
1062 eth_port = nfp_port_get_eth_port(port);
1063 if (!eth_port)
1064 return -EOPNOTSUPP;
1065
1066 if (!nfp_eth_can_support_fec(eth_port))
1067 return -EOPNOTSUPP;
1068
1069 fec = nfp_port_fec_ethtool_to_nsp(param->fec);
1070 if (fec < 0)
1071 return fec;
1072
1073 err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec);
1074 if (!err)
1075 /* Only refresh if we did something */
1076 nfp_net_refresh_port_table(port);
1077
1078 return err < 0 ? err : 0;
1079 }
1080
1081 /* RX network flow classification (RSS, filters, etc)
1082 */
ethtool_flow_to_nfp_flag(u32 flow_type)1083 static u32 ethtool_flow_to_nfp_flag(u32 flow_type)
1084 {
1085 static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = {
1086 [TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP,
1087 [TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP,
1088 [UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP,
1089 [UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP,
1090 [IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4,
1091 [IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6,
1092 };
1093
1094 if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp))
1095 return 0;
1096
1097 return xlate_ethtool_to_nfp[flow_type];
1098 }
1099
nfp_net_get_rss_hash_opts(struct nfp_net * nn,struct ethtool_rxnfc * cmd)1100 static int nfp_net_get_rss_hash_opts(struct nfp_net *nn,
1101 struct ethtool_rxnfc *cmd)
1102 {
1103 u32 nfp_rss_flag;
1104
1105 cmd->data = 0;
1106
1107 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
1108 return -EOPNOTSUPP;
1109
1110 nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type);
1111 if (!nfp_rss_flag)
1112 return -EINVAL;
1113
1114 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1115 if (nn->rss_cfg & nfp_rss_flag)
1116 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1117
1118 return 0;
1119 }
1120
nfp_net_get_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * cmd,u32 * rule_locs)1121 static int nfp_net_get_rxnfc(struct net_device *netdev,
1122 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1123 {
1124 struct nfp_net *nn = netdev_priv(netdev);
1125
1126 switch (cmd->cmd) {
1127 case ETHTOOL_GRXRINGS:
1128 cmd->data = nn->dp.num_rx_rings;
1129 return 0;
1130 case ETHTOOL_GRXFH:
1131 return nfp_net_get_rss_hash_opts(nn, cmd);
1132 default:
1133 return -EOPNOTSUPP;
1134 }
1135 }
1136
nfp_net_set_rss_hash_opt(struct nfp_net * nn,struct ethtool_rxnfc * nfc)1137 static int nfp_net_set_rss_hash_opt(struct nfp_net *nn,
1138 struct ethtool_rxnfc *nfc)
1139 {
1140 u32 new_rss_cfg = nn->rss_cfg;
1141 u32 nfp_rss_flag;
1142 int err;
1143
1144 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
1145 return -EOPNOTSUPP;
1146
1147 /* RSS only supports IP SA/DA and L4 src/dst ports */
1148 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
1149 RXH_L4_B_0_1 | RXH_L4_B_2_3))
1150 return -EINVAL;
1151
1152 /* We need at least the IP SA/DA fields for hashing */
1153 if (!(nfc->data & RXH_IP_SRC) ||
1154 !(nfc->data & RXH_IP_DST))
1155 return -EINVAL;
1156
1157 nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type);
1158 if (!nfp_rss_flag)
1159 return -EINVAL;
1160
1161 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1162 case 0:
1163 new_rss_cfg &= ~nfp_rss_flag;
1164 break;
1165 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1166 new_rss_cfg |= nfp_rss_flag;
1167 break;
1168 default:
1169 return -EINVAL;
1170 }
1171
1172 new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc);
1173 new_rss_cfg |= NFP_NET_CFG_RSS_MASK;
1174
1175 if (new_rss_cfg == nn->rss_cfg)
1176 return 0;
1177
1178 writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL);
1179 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS);
1180 if (err)
1181 return err;
1182
1183 nn->rss_cfg = new_rss_cfg;
1184
1185 nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg);
1186 return 0;
1187 }
1188
nfp_net_set_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * cmd)1189 static int nfp_net_set_rxnfc(struct net_device *netdev,
1190 struct ethtool_rxnfc *cmd)
1191 {
1192 struct nfp_net *nn = netdev_priv(netdev);
1193
1194 switch (cmd->cmd) {
1195 case ETHTOOL_SRXFH:
1196 return nfp_net_set_rss_hash_opt(nn, cmd);
1197 default:
1198 return -EOPNOTSUPP;
1199 }
1200 }
1201
nfp_net_get_rxfh_indir_size(struct net_device * netdev)1202 static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev)
1203 {
1204 struct nfp_net *nn = netdev_priv(netdev);
1205
1206 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
1207 return 0;
1208
1209 return ARRAY_SIZE(nn->rss_itbl);
1210 }
1211
nfp_net_get_rxfh_key_size(struct net_device * netdev)1212 static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev)
1213 {
1214 struct nfp_net *nn = netdev_priv(netdev);
1215
1216 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
1217 return -EOPNOTSUPP;
1218
1219 return nfp_net_rss_key_sz(nn);
1220 }
1221
nfp_net_get_rxfh(struct net_device * netdev,u32 * indir,u8 * key,u8 * hfunc)1222 static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
1223 u8 *hfunc)
1224 {
1225 struct nfp_net *nn = netdev_priv(netdev);
1226 int i;
1227
1228 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
1229 return -EOPNOTSUPP;
1230
1231 if (indir)
1232 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++)
1233 indir[i] = nn->rss_itbl[i];
1234 if (key)
1235 memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn));
1236 if (hfunc) {
1237 *hfunc = nn->rss_hfunc;
1238 if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT)
1239 *hfunc = ETH_RSS_HASH_UNKNOWN;
1240 }
1241
1242 return 0;
1243 }
1244
nfp_net_set_rxfh(struct net_device * netdev,const u32 * indir,const u8 * key,const u8 hfunc)1245 static int nfp_net_set_rxfh(struct net_device *netdev,
1246 const u32 *indir, const u8 *key,
1247 const u8 hfunc)
1248 {
1249 struct nfp_net *nn = netdev_priv(netdev);
1250 int i;
1251
1252 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) ||
1253 !(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc))
1254 return -EOPNOTSUPP;
1255
1256 if (!key && !indir)
1257 return 0;
1258
1259 if (key) {
1260 memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn));
1261 nfp_net_rss_write_key(nn);
1262 }
1263 if (indir) {
1264 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++)
1265 nn->rss_itbl[i] = indir[i];
1266
1267 nfp_net_rss_write_itbl(nn);
1268 }
1269
1270 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS);
1271 }
1272
1273 /* Dump BAR registers
1274 */
nfp_net_get_regs_len(struct net_device * netdev)1275 static int nfp_net_get_regs_len(struct net_device *netdev)
1276 {
1277 return NFP_NET_CFG_BAR_SZ;
1278 }
1279
nfp_net_get_regs(struct net_device * netdev,struct ethtool_regs * regs,void * p)1280 static void nfp_net_get_regs(struct net_device *netdev,
1281 struct ethtool_regs *regs, void *p)
1282 {
1283 struct nfp_net *nn = netdev_priv(netdev);
1284 u32 *regs_buf = p;
1285 int i;
1286
1287 regs->version = nn_readl(nn, NFP_NET_CFG_VERSION);
1288
1289 for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++)
1290 regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32)));
1291 }
1292
nfp_net_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)1293 static int nfp_net_get_coalesce(struct net_device *netdev,
1294 struct ethtool_coalesce *ec,
1295 struct kernel_ethtool_coalesce *kernel_coal,
1296 struct netlink_ext_ack *extack)
1297 {
1298 struct nfp_net *nn = netdev_priv(netdev);
1299
1300 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD))
1301 return -EINVAL;
1302
1303 ec->use_adaptive_rx_coalesce = nn->rx_coalesce_adapt_on;
1304 ec->use_adaptive_tx_coalesce = nn->tx_coalesce_adapt_on;
1305
1306 ec->rx_coalesce_usecs = nn->rx_coalesce_usecs;
1307 ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames;
1308 ec->tx_coalesce_usecs = nn->tx_coalesce_usecs;
1309 ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames;
1310
1311 return 0;
1312 }
1313
1314 /* Other debug dumps
1315 */
1316 static int
nfp_dump_nsp_diag(struct nfp_app * app,struct ethtool_dump * dump,void * buffer)1317 nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer)
1318 {
1319 struct nfp_resource *res;
1320 int ret;
1321
1322 if (!app)
1323 return -EOPNOTSUPP;
1324
1325 dump->version = 1;
1326 dump->flag = NFP_DUMP_NSP_DIAG;
1327
1328 res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG);
1329 if (IS_ERR(res))
1330 return PTR_ERR(res);
1331
1332 if (buffer) {
1333 if (dump->len != nfp_resource_size(res)) {
1334 ret = -EINVAL;
1335 goto exit_release;
1336 }
1337
1338 ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res),
1339 nfp_resource_address(res),
1340 buffer, dump->len);
1341 if (ret != dump->len)
1342 ret = ret < 0 ? ret : -EIO;
1343 else
1344 ret = 0;
1345 } else {
1346 dump->len = nfp_resource_size(res);
1347 ret = 0;
1348 }
1349 exit_release:
1350 nfp_resource_release(res);
1351
1352 return ret;
1353 }
1354
1355 /* Set the dump flag/level. Calculate the dump length for flag > 0 only (new TLV
1356 * based dumps), since flag 0 (default) calculates the length in
1357 * nfp_app_get_dump_flag(), and we need to support triggering a level 0 dump
1358 * without setting the flag first, for backward compatibility.
1359 */
nfp_app_set_dump(struct net_device * netdev,struct ethtool_dump * val)1360 static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val)
1361 {
1362 struct nfp_app *app = nfp_app_from_netdev(netdev);
1363 s64 len;
1364
1365 if (!app)
1366 return -EOPNOTSUPP;
1367
1368 if (val->flag == NFP_DUMP_NSP_DIAG) {
1369 app->pf->dump_flag = val->flag;
1370 return 0;
1371 }
1372
1373 if (!app->pf->dumpspec)
1374 return -EOPNOTSUPP;
1375
1376 len = nfp_net_dump_calculate_size(app->pf, app->pf->dumpspec,
1377 val->flag);
1378 if (len < 0)
1379 return len;
1380
1381 app->pf->dump_flag = val->flag;
1382 app->pf->dump_len = len;
1383
1384 return 0;
1385 }
1386
1387 static int
nfp_app_get_dump_flag(struct net_device * netdev,struct ethtool_dump * dump)1388 nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump)
1389 {
1390 struct nfp_app *app = nfp_app_from_netdev(netdev);
1391
1392 if (!app)
1393 return -EOPNOTSUPP;
1394
1395 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG)
1396 return nfp_dump_nsp_diag(app, dump, NULL);
1397
1398 dump->flag = app->pf->dump_flag;
1399 dump->len = app->pf->dump_len;
1400
1401 return 0;
1402 }
1403
1404 static int
nfp_app_get_dump_data(struct net_device * netdev,struct ethtool_dump * dump,void * buffer)1405 nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump,
1406 void *buffer)
1407 {
1408 struct nfp_app *app = nfp_app_from_netdev(netdev);
1409
1410 if (!app)
1411 return -EOPNOTSUPP;
1412
1413 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG)
1414 return nfp_dump_nsp_diag(app, dump, buffer);
1415
1416 dump->flag = app->pf->dump_flag;
1417 dump->len = app->pf->dump_len;
1418
1419 return nfp_net_dump_populate_buffer(app->pf, app->pf->dumpspec, dump,
1420 buffer);
1421 }
1422
1423 static int
nfp_port_get_module_info(struct net_device * netdev,struct ethtool_modinfo * modinfo)1424 nfp_port_get_module_info(struct net_device *netdev,
1425 struct ethtool_modinfo *modinfo)
1426 {
1427 struct nfp_eth_table_port *eth_port;
1428 struct nfp_port *port;
1429 unsigned int read_len;
1430 struct nfp_nsp *nsp;
1431 int err = 0;
1432 u8 data;
1433
1434 port = nfp_port_from_netdev(netdev);
1435 if (!port)
1436 return -EOPNOTSUPP;
1437
1438 /* update port state to get latest interface */
1439 set_bit(NFP_PORT_CHANGED, &port->flags);
1440 eth_port = nfp_port_get_eth_port(port);
1441 if (!eth_port)
1442 return -EOPNOTSUPP;
1443
1444 nsp = nfp_nsp_open(port->app->cpp);
1445 if (IS_ERR(nsp)) {
1446 err = PTR_ERR(nsp);
1447 netdev_err(netdev, "Failed to access the NSP: %d\n", err);
1448 return err;
1449 }
1450
1451 if (!nfp_nsp_has_read_module_eeprom(nsp)) {
1452 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n");
1453 err = -EOPNOTSUPP;
1454 goto exit_close_nsp;
1455 }
1456
1457 switch (eth_port->interface) {
1458 case NFP_INTERFACE_SFP:
1459 case NFP_INTERFACE_SFP28:
1460 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
1461 SFP_SFF8472_COMPLIANCE, &data,
1462 1, &read_len);
1463 if (err < 0)
1464 goto exit_close_nsp;
1465
1466 if (!data) {
1467 modinfo->type = ETH_MODULE_SFF_8079;
1468 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
1469 } else {
1470 modinfo->type = ETH_MODULE_SFF_8472;
1471 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
1472 }
1473 break;
1474 case NFP_INTERFACE_QSFP:
1475 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
1476 SFP_SFF_REV_COMPLIANCE, &data,
1477 1, &read_len);
1478 if (err < 0)
1479 goto exit_close_nsp;
1480
1481 if (data < 0x3) {
1482 modinfo->type = ETH_MODULE_SFF_8436;
1483 modinfo->eeprom_len = ETH_MODULE_SFF_8436_MAX_LEN;
1484 } else {
1485 modinfo->type = ETH_MODULE_SFF_8636;
1486 modinfo->eeprom_len = ETH_MODULE_SFF_8636_MAX_LEN;
1487 }
1488 break;
1489 case NFP_INTERFACE_QSFP28:
1490 modinfo->type = ETH_MODULE_SFF_8636;
1491 modinfo->eeprom_len = ETH_MODULE_SFF_8636_MAX_LEN;
1492 break;
1493 default:
1494 netdev_err(netdev, "Unsupported module 0x%x detected\n",
1495 eth_port->interface);
1496 err = -EINVAL;
1497 }
1498
1499 exit_close_nsp:
1500 nfp_nsp_close(nsp);
1501 return err;
1502 }
1503
1504 static int
nfp_port_get_module_eeprom(struct net_device * netdev,struct ethtool_eeprom * eeprom,u8 * data)1505 nfp_port_get_module_eeprom(struct net_device *netdev,
1506 struct ethtool_eeprom *eeprom, u8 *data)
1507 {
1508 struct nfp_eth_table_port *eth_port;
1509 struct nfp_port *port;
1510 struct nfp_nsp *nsp;
1511 int err;
1512
1513 port = nfp_port_from_netdev(netdev);
1514 eth_port = __nfp_port_get_eth_port(port);
1515 if (!eth_port)
1516 return -EOPNOTSUPP;
1517
1518 nsp = nfp_nsp_open(port->app->cpp);
1519 if (IS_ERR(nsp)) {
1520 err = PTR_ERR(nsp);
1521 netdev_err(netdev, "Failed to access the NSP: %d\n", err);
1522 return err;
1523 }
1524
1525 if (!nfp_nsp_has_read_module_eeprom(nsp)) {
1526 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n");
1527 err = -EOPNOTSUPP;
1528 goto exit_close_nsp;
1529 }
1530
1531 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
1532 eeprom->offset, data, eeprom->len,
1533 &eeprom->len);
1534 if (err < 0) {
1535 if (eeprom->len) {
1536 netdev_warn(netdev,
1537 "Incomplete read from module EEPROM: %d\n",
1538 err);
1539 err = 0;
1540 } else {
1541 netdev_err(netdev,
1542 "Reading from module EEPROM failed: %d\n",
1543 err);
1544 }
1545 }
1546
1547 exit_close_nsp:
1548 nfp_nsp_close(nsp);
1549 return err;
1550 }
1551
nfp_net_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)1552 static int nfp_net_set_coalesce(struct net_device *netdev,
1553 struct ethtool_coalesce *ec,
1554 struct kernel_ethtool_coalesce *kernel_coal,
1555 struct netlink_ext_ack *extack)
1556 {
1557 struct nfp_net *nn = netdev_priv(netdev);
1558 unsigned int factor;
1559
1560 /* Compute factor used to convert coalesce '_usecs' parameters to
1561 * ME timestamp ticks. There are 16 ME clock cycles for each timestamp
1562 * count.
1563 */
1564 factor = nn->tlv_caps.me_freq_mhz / 16;
1565
1566 /* Each pair of (usecs, max_frames) fields specifies that interrupts
1567 * should be coalesced until
1568 * (usecs > 0 && time_since_first_completion >= usecs) ||
1569 * (max_frames > 0 && completed_frames >= max_frames)
1570 *
1571 * It is illegal to set both usecs and max_frames to zero as this would
1572 * cause interrupts to never be generated. To disable coalescing, set
1573 * usecs = 0 and max_frames = 1.
1574 *
1575 * Some implementations ignore the value of max_frames and use the
1576 * condition time_since_first_completion >= usecs
1577 */
1578
1579 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD))
1580 return -EINVAL;
1581
1582 /* ensure valid configuration */
1583 if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames)
1584 return -EINVAL;
1585
1586 if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames)
1587 return -EINVAL;
1588
1589 if (nfp_net_coalesce_para_check(ec->rx_coalesce_usecs * factor,
1590 ec->rx_max_coalesced_frames))
1591 return -EINVAL;
1592
1593 if (nfp_net_coalesce_para_check(ec->tx_coalesce_usecs * factor,
1594 ec->tx_max_coalesced_frames))
1595 return -EINVAL;
1596
1597 /* configuration is valid */
1598 nn->rx_coalesce_adapt_on = !!ec->use_adaptive_rx_coalesce;
1599 nn->tx_coalesce_adapt_on = !!ec->use_adaptive_tx_coalesce;
1600
1601 nn->rx_coalesce_usecs = ec->rx_coalesce_usecs;
1602 nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames;
1603 nn->tx_coalesce_usecs = ec->tx_coalesce_usecs;
1604 nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames;
1605
1606 /* write configuration to device */
1607 nfp_net_coalesce_write_cfg(nn);
1608 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD);
1609 }
1610
nfp_net_get_channels(struct net_device * netdev,struct ethtool_channels * channel)1611 static void nfp_net_get_channels(struct net_device *netdev,
1612 struct ethtool_channels *channel)
1613 {
1614 struct nfp_net *nn = netdev_priv(netdev);
1615 unsigned int num_tx_rings;
1616
1617 num_tx_rings = nn->dp.num_tx_rings;
1618 if (nn->dp.xdp_prog)
1619 num_tx_rings -= nn->dp.num_rx_rings;
1620
1621 channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs);
1622 channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs);
1623 channel->max_combined = min(channel->max_rx, channel->max_tx);
1624 channel->max_other = NFP_NET_NON_Q_VECTORS;
1625 channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings);
1626 channel->rx_count = nn->dp.num_rx_rings - channel->combined_count;
1627 channel->tx_count = num_tx_rings - channel->combined_count;
1628 channel->other_count = NFP_NET_NON_Q_VECTORS;
1629 }
1630
nfp_net_set_num_rings(struct nfp_net * nn,unsigned int total_rx,unsigned int total_tx)1631 static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx,
1632 unsigned int total_tx)
1633 {
1634 struct nfp_net_dp *dp;
1635
1636 dp = nfp_net_clone_dp(nn);
1637 if (!dp)
1638 return -ENOMEM;
1639
1640 dp->num_rx_rings = total_rx;
1641 dp->num_tx_rings = total_tx;
1642 /* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */
1643 if (dp->xdp_prog)
1644 dp->num_tx_rings += total_rx;
1645
1646 return nfp_net_ring_reconfig(nn, dp, NULL);
1647 }
1648
nfp_net_set_channels(struct net_device * netdev,struct ethtool_channels * channel)1649 static int nfp_net_set_channels(struct net_device *netdev,
1650 struct ethtool_channels *channel)
1651 {
1652 struct nfp_net *nn = netdev_priv(netdev);
1653 unsigned int total_rx, total_tx;
1654
1655 /* Reject unsupported */
1656 if (channel->other_count != NFP_NET_NON_Q_VECTORS ||
1657 (channel->rx_count && channel->tx_count))
1658 return -EINVAL;
1659
1660 total_rx = channel->combined_count + channel->rx_count;
1661 total_tx = channel->combined_count + channel->tx_count;
1662
1663 if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) ||
1664 total_tx > min(nn->max_tx_rings, nn->max_r_vecs))
1665 return -EINVAL;
1666
1667 return nfp_net_set_num_rings(nn, total_rx, total_tx);
1668 }
1669
nfp_port_get_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)1670 static void nfp_port_get_pauseparam(struct net_device *netdev,
1671 struct ethtool_pauseparam *pause)
1672 {
1673 struct nfp_eth_table_port *eth_port;
1674 struct nfp_port *port;
1675
1676 port = nfp_port_from_netdev(netdev);
1677 eth_port = nfp_port_get_eth_port(port);
1678 if (!eth_port)
1679 return;
1680
1681 /* Currently pause frame support is fixed */
1682 pause->autoneg = AUTONEG_DISABLE;
1683 pause->rx_pause = 1;
1684 pause->tx_pause = 1;
1685 }
1686
nfp_net_set_phys_id(struct net_device * netdev,enum ethtool_phys_id_state state)1687 static int nfp_net_set_phys_id(struct net_device *netdev,
1688 enum ethtool_phys_id_state state)
1689 {
1690 struct nfp_eth_table_port *eth_port;
1691 struct nfp_port *port;
1692 int err;
1693
1694 port = nfp_port_from_netdev(netdev);
1695 eth_port = __nfp_port_get_eth_port(port);
1696 if (!eth_port)
1697 return -EOPNOTSUPP;
1698
1699 switch (state) {
1700 case ETHTOOL_ID_ACTIVE:
1701 /* Control LED to blink */
1702 err = nfp_eth_set_idmode(port->app->cpp, eth_port->index, 1);
1703 break;
1704
1705 case ETHTOOL_ID_INACTIVE:
1706 /* Control LED to normal mode */
1707 err = nfp_eth_set_idmode(port->app->cpp, eth_port->index, 0);
1708 break;
1709
1710 case ETHTOOL_ID_ON:
1711 case ETHTOOL_ID_OFF:
1712 default:
1713 return -EOPNOTSUPP;
1714 }
1715
1716 return err;
1717 }
1718
1719 #define NFP_EEPROM_LEN ETH_ALEN
1720
1721 static int
nfp_net_get_eeprom_len(struct net_device * netdev)1722 nfp_net_get_eeprom_len(struct net_device *netdev)
1723 {
1724 struct nfp_eth_table_port *eth_port;
1725 struct nfp_port *port;
1726
1727 port = nfp_port_from_netdev(netdev);
1728 eth_port = __nfp_port_get_eth_port(port);
1729 if (!eth_port)
1730 return 0;
1731
1732 return NFP_EEPROM_LEN;
1733 }
1734
1735 static int
nfp_net_get_nsp_hwindex(struct net_device * netdev,struct nfp_nsp ** nspptr,u32 * index)1736 nfp_net_get_nsp_hwindex(struct net_device *netdev,
1737 struct nfp_nsp **nspptr,
1738 u32 *index)
1739 {
1740 struct nfp_eth_table_port *eth_port;
1741 struct nfp_port *port;
1742 struct nfp_nsp *nsp;
1743 int err;
1744
1745 port = nfp_port_from_netdev(netdev);
1746 eth_port = __nfp_port_get_eth_port(port);
1747 if (!eth_port)
1748 return -EOPNOTSUPP;
1749
1750 nsp = nfp_nsp_open(port->app->cpp);
1751 if (IS_ERR(nsp)) {
1752 err = PTR_ERR(nsp);
1753 netdev_err(netdev, "Failed to access the NSP: %d\n", err);
1754 return err;
1755 }
1756
1757 if (!nfp_nsp_has_hwinfo_lookup(nsp)) {
1758 netdev_err(netdev, "NSP doesn't support PF MAC generation\n");
1759 nfp_nsp_close(nsp);
1760 return -EOPNOTSUPP;
1761 }
1762
1763 *nspptr = nsp;
1764 *index = eth_port->eth_index;
1765
1766 return 0;
1767 }
1768
1769 static int
nfp_net_get_port_mac_by_hwinfo(struct net_device * netdev,u8 * mac_addr)1770 nfp_net_get_port_mac_by_hwinfo(struct net_device *netdev,
1771 u8 *mac_addr)
1772 {
1773 char hwinfo[32] = {};
1774 struct nfp_nsp *nsp;
1775 u32 index;
1776 int err;
1777
1778 err = nfp_net_get_nsp_hwindex(netdev, &nsp, &index);
1779 if (err)
1780 return err;
1781
1782 snprintf(hwinfo, sizeof(hwinfo), "eth%u.mac", index);
1783 err = nfp_nsp_hwinfo_lookup(nsp, hwinfo, sizeof(hwinfo));
1784 nfp_nsp_close(nsp);
1785 if (err) {
1786 netdev_err(netdev, "Reading persistent MAC address failed: %d\n",
1787 err);
1788 return -EOPNOTSUPP;
1789 }
1790
1791 if (sscanf(hwinfo, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
1792 &mac_addr[0], &mac_addr[1], &mac_addr[2],
1793 &mac_addr[3], &mac_addr[4], &mac_addr[5]) != 6) {
1794 netdev_err(netdev, "Can't parse persistent MAC address (%s)\n",
1795 hwinfo);
1796 return -EOPNOTSUPP;
1797 }
1798
1799 return 0;
1800 }
1801
1802 static int
nfp_net_set_port_mac_by_hwinfo(struct net_device * netdev,u8 * mac_addr)1803 nfp_net_set_port_mac_by_hwinfo(struct net_device *netdev,
1804 u8 *mac_addr)
1805 {
1806 char hwinfo[32] = {};
1807 struct nfp_nsp *nsp;
1808 u32 index;
1809 int err;
1810
1811 err = nfp_net_get_nsp_hwindex(netdev, &nsp, &index);
1812 if (err)
1813 return err;
1814
1815 snprintf(hwinfo, sizeof(hwinfo),
1816 "eth%u.mac=%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
1817 index, mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3],
1818 mac_addr[4], mac_addr[5]);
1819
1820 err = nfp_nsp_hwinfo_set(nsp, hwinfo, sizeof(hwinfo));
1821 nfp_nsp_close(nsp);
1822 if (err) {
1823 netdev_err(netdev, "HWinfo set failed: %d, hwinfo: %s\n",
1824 err, hwinfo);
1825 return -EOPNOTSUPP;
1826 }
1827
1828 return 0;
1829 }
1830
1831 static int
nfp_net_get_eeprom(struct net_device * netdev,struct ethtool_eeprom * eeprom,u8 * bytes)1832 nfp_net_get_eeprom(struct net_device *netdev,
1833 struct ethtool_eeprom *eeprom, u8 *bytes)
1834 {
1835 struct nfp_net *nn = netdev_priv(netdev);
1836 u8 buf[NFP_EEPROM_LEN] = {};
1837
1838 if (eeprom->len == 0)
1839 return -EINVAL;
1840
1841 if (nfp_net_get_port_mac_by_hwinfo(netdev, buf))
1842 return -EOPNOTSUPP;
1843
1844 eeprom->magic = nn->pdev->vendor | (nn->pdev->device << 16);
1845 memcpy(bytes, buf + eeprom->offset, eeprom->len);
1846
1847 return 0;
1848 }
1849
1850 static int
nfp_net_set_eeprom(struct net_device * netdev,struct ethtool_eeprom * eeprom,u8 * bytes)1851 nfp_net_set_eeprom(struct net_device *netdev,
1852 struct ethtool_eeprom *eeprom, u8 *bytes)
1853 {
1854 struct nfp_net *nn = netdev_priv(netdev);
1855 u8 buf[NFP_EEPROM_LEN] = {};
1856
1857 if (eeprom->len == 0)
1858 return -EINVAL;
1859
1860 if (eeprom->magic != (nn->pdev->vendor | nn->pdev->device << 16))
1861 return -EINVAL;
1862
1863 if (nfp_net_get_port_mac_by_hwinfo(netdev, buf))
1864 return -EOPNOTSUPP;
1865
1866 memcpy(buf + eeprom->offset, bytes, eeprom->len);
1867 if (nfp_net_set_port_mac_by_hwinfo(netdev, buf))
1868 return -EOPNOTSUPP;
1869
1870 return 0;
1871 }
1872
1873 static const struct ethtool_ops nfp_net_ethtool_ops = {
1874 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1875 ETHTOOL_COALESCE_MAX_FRAMES |
1876 ETHTOOL_COALESCE_USE_ADAPTIVE,
1877 .get_drvinfo = nfp_net_get_drvinfo,
1878 .nway_reset = nfp_net_nway_reset,
1879 .get_link = ethtool_op_get_link,
1880 .get_ringparam = nfp_net_get_ringparam,
1881 .set_ringparam = nfp_net_set_ringparam,
1882 .self_test = nfp_net_self_test,
1883 .get_strings = nfp_net_get_strings,
1884 .get_ethtool_stats = nfp_net_get_stats,
1885 .get_sset_count = nfp_net_get_sset_count,
1886 .get_rxnfc = nfp_net_get_rxnfc,
1887 .set_rxnfc = nfp_net_set_rxnfc,
1888 .get_rxfh_indir_size = nfp_net_get_rxfh_indir_size,
1889 .get_rxfh_key_size = nfp_net_get_rxfh_key_size,
1890 .get_rxfh = nfp_net_get_rxfh,
1891 .set_rxfh = nfp_net_set_rxfh,
1892 .get_regs_len = nfp_net_get_regs_len,
1893 .get_regs = nfp_net_get_regs,
1894 .set_dump = nfp_app_set_dump,
1895 .get_dump_flag = nfp_app_get_dump_flag,
1896 .get_dump_data = nfp_app_get_dump_data,
1897 .get_eeprom_len = nfp_net_get_eeprom_len,
1898 .get_eeprom = nfp_net_get_eeprom,
1899 .set_eeprom = nfp_net_set_eeprom,
1900 .get_module_info = nfp_port_get_module_info,
1901 .get_module_eeprom = nfp_port_get_module_eeprom,
1902 .get_coalesce = nfp_net_get_coalesce,
1903 .set_coalesce = nfp_net_set_coalesce,
1904 .get_channels = nfp_net_get_channels,
1905 .set_channels = nfp_net_set_channels,
1906 .get_link_ksettings = nfp_net_get_link_ksettings,
1907 .set_link_ksettings = nfp_net_set_link_ksettings,
1908 .get_fecparam = nfp_port_get_fecparam,
1909 .set_fecparam = nfp_port_set_fecparam,
1910 .get_pauseparam = nfp_port_get_pauseparam,
1911 .set_phys_id = nfp_net_set_phys_id,
1912 };
1913
1914 const struct ethtool_ops nfp_port_ethtool_ops = {
1915 .get_drvinfo = nfp_app_get_drvinfo,
1916 .nway_reset = nfp_net_nway_reset,
1917 .get_link = ethtool_op_get_link,
1918 .get_strings = nfp_port_get_strings,
1919 .get_ethtool_stats = nfp_port_get_stats,
1920 .self_test = nfp_net_self_test,
1921 .get_sset_count = nfp_port_get_sset_count,
1922 .set_dump = nfp_app_set_dump,
1923 .get_dump_flag = nfp_app_get_dump_flag,
1924 .get_dump_data = nfp_app_get_dump_data,
1925 .get_module_info = nfp_port_get_module_info,
1926 .get_module_eeprom = nfp_port_get_module_eeprom,
1927 .get_link_ksettings = nfp_net_get_link_ksettings,
1928 .set_link_ksettings = nfp_net_set_link_ksettings,
1929 .get_fecparam = nfp_port_get_fecparam,
1930 .set_fecparam = nfp_port_set_fecparam,
1931 .get_pauseparam = nfp_port_get_pauseparam,
1932 .set_phys_id = nfp_net_set_phys_id,
1933 };
1934
nfp_net_set_ethtool_ops(struct net_device * netdev)1935 void nfp_net_set_ethtool_ops(struct net_device *netdev)
1936 {
1937 netdev->ethtool_ops = &nfp_net_ethtool_ops;
1938 }
1939