1 #ifndef _RTL871X_RECV_H_
2 #define _RTL871X_RECV_H_
3
4 #include "osdep_service.h"
5 #include "drv_types.h"
6
7 #define NR_RECVFRAME 256
8
9 #define RXFRAME_ALIGN 8
10 #define RXFRAME_ALIGN_SZ (1 << RXFRAME_ALIGN)
11
12 #define MAX_RXFRAME_CNT 512
13 #define MAX_RX_NUMBLKS (32)
14 #define RECVFRAME_HDR_ALIGN 128
15 #define MAX_SUBFRAME_COUNT 64
16
17 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
18
19 /* for Rx reordering buffer control */
20 struct recv_reorder_ctrl {
21 struct _adapter *padapter;
22 u16 indicate_seq; /* =wstart_b, init_value=0xffff */
23 u16 wend_b;
24 u8 wsize_b;
25 struct __queue pending_recvframe_queue;
26 struct timer_list reordering_ctrl_timer;
27 };
28
29 struct stainfo_rxcache {
30 u16 tid_rxseq[16];
31 };
32
33 #define PHY_RSSI_SLID_WIN_MAX 100
34 #define PHY_LINKQUALITY_SLID_WIN_MAX 20
35
36
37 struct smooth_rssi_data {
38 u32 elements[100]; /* array to store values */
39 u32 index; /* index to current array to store */
40 u32 total_num; /* num of valid elements */
41 u32 total_val; /* sum of valid elements */
42 };
43
44 struct rx_pkt_attrib {
45
46 u8 amsdu;
47 u8 order;
48 u8 qos;
49 u8 to_fr_ds;
50 u8 frag_num;
51 u16 seq_num;
52 u8 pw_save;
53 u8 mfrag;
54 u8 mdata;
55 u8 privacy; /* in frame_ctrl field */
56 u8 bdecrypted;
57 int hdrlen; /* the WLAN Header Len */
58 int encrypt; /* 0 no encrypt. != 0 encrypt algorith */
59 int iv_len;
60 int icv_len;
61 int priority;
62 int ack_policy;
63 u8 crc_err;
64 u8 dst[ETH_ALEN];
65 u8 src[ETH_ALEN];
66 u8 ta[ETH_ALEN];
67 u8 ra[ETH_ALEN];
68 u8 bssid[ETH_ALEN];
69 u8 tcpchk_valid; /* 0: invalid, 1: valid */
70 u8 ip_chkrpt; /* 0: incorrect, 1: correct */
71 u8 tcp_chkrpt; /* 0: incorrect, 1: correct */
72 u8 signal_qual;
73 s8 rx_mimo_signal_qual[2];
74 u8 mcs_rate;
75 u8 htc;
76 u8 signal_strength;
77 };
78
79 /*
80 accesser of recv_priv: recv_entry(dispatch / passive level);
81 recv_thread(passive) ; returnpkt(dispatch)
82 ; halt(passive) ;
83
84 using enter_critical section to protect
85 */
86 struct recv_priv {
87 spinlock_t lock;
88 struct __queue free_recv_queue;
89 struct __queue recv_pending_queue;
90 u8 *pallocated_frame_buf;
91 u8 *precv_frame_buf;
92 uint free_recvframe_cnt;
93 struct _adapter *adapter;
94 uint rx_bytes;
95 uint rx_pkts;
96 uint rx_drop;
97 uint rx_icv_err;
98 uint rx_largepacket_crcerr;
99 uint rx_smallpacket_crcerr;
100 uint rx_middlepacket_crcerr;
101 u8 rx_pending_cnt;
102 uint ff_hwaddr;
103 struct tasklet_struct recv_tasklet;
104 struct sk_buff_head free_recv_skb_queue;
105 struct sk_buff_head rx_skb_queue;
106 u8 *pallocated_recv_buf;
107 u8 *precv_buf; /* 4 alignment */
108 struct __queue free_recv_buf_queue;
109 u32 free_recv_buf_queue_cnt;
110 /* For the phy informatiom */
111 s8 rssi;
112 u8 signal;
113 u8 noise;
114 u8 fw_rssi;
115 struct smooth_rssi_data signal_qual_data;
116 struct smooth_rssi_data signal_strength_data;
117 };
118
119 struct sta_recv_priv {
120 spinlock_t lock;
121 sint option;
122 struct __queue defrag_q; /* keeping the fragment frame until defrag */
123 struct stainfo_rxcache rxcache;
124 uint sta_rx_bytes;
125 uint sta_rx_pkts;
126 uint sta_rx_fail;
127 };
128
129 #include "rtl8712_recv.h"
130
131 /* get a free recv_frame from pfree_recv_queue */
132 union recv_frame *r8712_alloc_recvframe(struct __queue *pfree_recv_queue);
133 union recv_frame *r8712_dequeue_recvframe(struct __queue *queue);
134 int r8712_enqueue_recvframe(union recv_frame *precvframe,
135 struct __queue *queue);
136 int r8712_free_recvframe(union recv_frame *precvframe,
137 struct __queue *pfree_recv_queue);
138 void r8712_free_recvframe_queue(struct __queue *pframequeue,
139 struct __queue *pfree_recv_queue);
140 void r8712_init_recvframe(union recv_frame *precvframe,
141 struct recv_priv *precvpriv);
142 int r8712_wlanhdr_to_ethhdr(union recv_frame *precvframe);
143 int recv_func(struct _adapter *padapter, void *pcontext);
144
get_rxmem(union recv_frame * precvframe)145 static inline u8 *get_rxmem(union recv_frame *precvframe)
146 {
147 /* always return rx_head... */
148 if (precvframe == NULL)
149 return NULL;
150 return precvframe->u.hdr.rx_head;
151 }
152
get_rx_status(union recv_frame * precvframe)153 static inline u8 *get_rx_status(union recv_frame *precvframe)
154 {
155 return get_rxmem(precvframe);
156 }
157
get_recvframe_data(union recv_frame * precvframe)158 static inline u8 *get_recvframe_data(union recv_frame *precvframe)
159 {
160 /* always return rx_data */
161 if (precvframe == NULL)
162 return NULL;
163 return precvframe->u.hdr.rx_data;
164 }
165
recvframe_push(union recv_frame * precvframe,sint sz)166 static inline u8 *recvframe_push(union recv_frame *precvframe, sint sz)
167 {
168 /* append data before rx_data */
169
170 /* add data to the start of recv_frame
171 *
172 * This function extends the used data area of the recv_frame at the
173 * buffer start. rx_data must be still larger than rx_head, after
174 * pushing.
175 */
176
177 if (precvframe == NULL)
178 return NULL;
179 precvframe->u.hdr.rx_data -= sz ;
180 if (precvframe->u.hdr.rx_data < precvframe->u.hdr.rx_head) {
181 precvframe->u.hdr.rx_data += sz ;
182 return NULL;
183 }
184 precvframe->u.hdr.len += sz;
185 return precvframe->u.hdr.rx_data;
186 }
187
recvframe_pull(union recv_frame * precvframe,sint sz)188 static inline u8 *recvframe_pull(union recv_frame *precvframe, sint sz)
189 {
190 /* used for extract sz bytes from rx_data, update rx_data and return
191 * the updated rx_data to the caller */
192 if (precvframe == NULL)
193 return NULL;
194 precvframe->u.hdr.rx_data += sz;
195 if (precvframe->u.hdr.rx_data > precvframe->u.hdr.rx_tail) {
196 precvframe->u.hdr.rx_data -= sz;
197 return NULL;
198 }
199 precvframe->u.hdr.len -= sz;
200 return precvframe->u.hdr.rx_data;
201 }
202
recvframe_put(union recv_frame * precvframe,sint sz)203 static inline u8 *recvframe_put(union recv_frame *precvframe, sint sz)
204 {
205 /* used for append sz bytes from ptr to rx_tail, update rx_tail and
206 * return the updated rx_tail to the caller
207 * after putting, rx_tail must be still larger than rx_end. */
208 unsigned char *prev_rx_tail;
209
210 if (precvframe == NULL)
211 return NULL;
212 prev_rx_tail = precvframe->u.hdr.rx_tail;
213 precvframe->u.hdr.rx_tail += sz;
214 if (precvframe->u.hdr.rx_tail > precvframe->u.hdr.rx_end) {
215 precvframe->u.hdr.rx_tail -= sz;
216 return NULL;
217 }
218 precvframe->u.hdr.len += sz;
219 return precvframe->u.hdr.rx_tail;
220 }
221
recvframe_pull_tail(union recv_frame * precvframe,sint sz)222 static inline u8 *recvframe_pull_tail(union recv_frame *precvframe, sint sz)
223 {
224 /* rmv data from rx_tail (by yitsen)
225 * used for extract sz bytes from rx_end, update rx_end and return the
226 * updated rx_end to the caller
227 * after pulling, rx_end must be still larger than rx_data. */
228 if (precvframe == NULL)
229 return NULL;
230 precvframe->u.hdr.rx_tail -= sz;
231 if (precvframe->u.hdr.rx_tail < precvframe->u.hdr.rx_data) {
232 precvframe->u.hdr.rx_tail += sz;
233 return NULL;
234 }
235 precvframe->u.hdr.len -= sz;
236 return precvframe->u.hdr.rx_tail;
237 }
238
get_rxbuf_desc(union recv_frame * precvframe)239 static inline _buffer *get_rxbuf_desc(union recv_frame *precvframe)
240 {
241 _buffer *buf_desc;
242 if (precvframe == NULL)
243 return NULL;
244 return buf_desc;
245 }
246
rxmem_to_recvframe(u8 * rxmem)247 static inline union recv_frame *rxmem_to_recvframe(u8 *rxmem)
248 {
249 /* due to the design of 2048 bytes alignment of recv_frame, we can
250 * reference the union recv_frame from any given member of recv_frame.
251 * rxmem indicates the any member/address in recv_frame */
252 return (union recv_frame *)(((addr_t)rxmem >> RXFRAME_ALIGN) <<
253 RXFRAME_ALIGN);
254 }
255
pkt_to_recvframe(_pkt * pkt)256 static inline union recv_frame *pkt_to_recvframe(_pkt *pkt)
257 {
258 u8 *buf_star;
259 union recv_frame *precv_frame;
260
261 precv_frame = rxmem_to_recvframe((unsigned char *)buf_star);
262 return precv_frame;
263 }
264
pkt_to_recvmem(_pkt * pkt)265 static inline u8 *pkt_to_recvmem(_pkt *pkt)
266 {
267 /* return the rx_head */
268 union recv_frame *precv_frame = pkt_to_recvframe(pkt);
269
270 return precv_frame->u.hdr.rx_head;
271 }
272
pkt_to_recvdata(_pkt * pkt)273 static inline u8 *pkt_to_recvdata(_pkt *pkt)
274 {
275 /* return the rx_data */
276 union recv_frame *precv_frame = pkt_to_recvframe(pkt);
277
278 return precv_frame->u.hdr.rx_data;
279 }
280
get_recvframe_len(union recv_frame * precvframe)281 static inline sint get_recvframe_len(union recv_frame *precvframe)
282 {
283 return precvframe->u.hdr.len;
284 }
285
286 struct sta_info;
287
288 void _r8712_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv);
289 sint r8712_recvframe_chkmic(struct _adapter *adapter,
290 union recv_frame *precvframe);
291 union recv_frame *r8712_decryptor(struct _adapter *adapter,
292 union recv_frame *precv_frame);
293 union recv_frame *r8712_recvframe_chk_defrag(struct _adapter *adapter,
294 union recv_frame *precv_frame);
295 union recv_frame *r8712_recvframe_defrag(struct _adapter *adapter,
296 struct __queue *defrag_q);
297 union recv_frame *r8712_recvframe_chk_defrag_new(struct _adapter *adapter,
298 union recv_frame *precv_frame);
299 union recv_frame *r8712_recvframe_defrag_new(struct _adapter *adapter,
300 struct __queue *defrag_q,
301 union recv_frame *precv_frame);
302 int r8712_recv_decache(union recv_frame *precv_frame, u8 bretry,
303 struct stainfo_rxcache *prxcache);
304 int r8712_sta2sta_data_frame(struct _adapter *adapter,
305 union recv_frame *precv_frame,
306 struct sta_info **psta);
307 int r8712_ap2sta_data_frame(struct _adapter *adapter,
308 union recv_frame *precv_frame,
309 struct sta_info **psta);
310 int r8712_sta2ap_data_frame(struct _adapter *adapter,
311 union recv_frame *precv_frame,
312 struct sta_info **psta);
313 int r8712_validate_recv_ctrl_frame(struct _adapter *adapter,
314 union recv_frame *precv_frame);
315 int r8712_validate_recv_mgnt_frame(struct _adapter *adapter,
316 union recv_frame *precv_frame);
317 int r8712_validate_recv_data_frame(struct _adapter *adapter,
318 union recv_frame *precv_frame);
319 int r8712_validate_recv_frame(struct _adapter *adapter,
320 union recv_frame *precv_frame);
321 union recv_frame *r8712_portctrl(struct _adapter *adapter,
322 union recv_frame *precv_frame);
323 void r8712_mgt_dispatcher(struct _adapter *padapter, u8 *pframe, uint len);
324 int r8712_amsdu_to_msdu(struct _adapter *padapter, union recv_frame *prframe);
325
326 #endif
327
328