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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / drivers / staging / rtl8712 / rtl871x_recv.h
blobcc7a72fee1c2601360b9c43423c098ffc14cb9d1
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 semaphore recv_sema;
89 struct semaphore terminate_recvthread_sema;
90 struct __queue free_recv_queue;
91 struct __queue recv_pending_queue;
92 u8 *pallocated_frame_buf;
93 u8 *precv_frame_buf;
94 uint free_recvframe_cnt;
95 struct _adapter *adapter;
96 uint rx_bytes;
97 uint rx_pkts;
98 uint rx_drop;
99 uint rx_icv_err;
100 uint rx_largepacket_crcerr;
101 uint rx_smallpacket_crcerr;
102 uint rx_middlepacket_crcerr;
103 struct semaphore allrxreturnevt;
104 u8 rx_pending_cnt;
105 uint ff_hwaddr;
106 struct tasklet_struct recv_tasklet;
107 struct sk_buff_head free_recv_skb_queue;
108 struct sk_buff_head rx_skb_queue;
109 u8 *pallocated_recv_buf;
110 u8 *precv_buf; /* 4 alignment */
111 struct __queue free_recv_buf_queue;
112 u32 free_recv_buf_queue_cnt;
113 /* For the phy informatiom */
114 s8 rssi;
115 u8 signal;
116 u8 noise;
117 u8 fw_rssi;
118 struct smooth_rssi_data signal_qual_data;
119 struct smooth_rssi_data signal_strength_data;
120 };
121
122 struct sta_recv_priv {
123 spinlock_t lock;
124 sint option;
125 struct __queue defrag_q; /* keeping the fragment frame until defrag */
126 struct stainfo_rxcache rxcache;
127 uint sta_rx_bytes;
128 uint sta_rx_pkts;
129 uint sta_rx_fail;
130 };
131
132 #include "rtl8712_recv.h"
133
134 /* get a free recv_frame from pfree_recv_queue */
135 union recv_frame *r8712_alloc_recvframe(struct __queue *pfree_recv_queue);
136 union recv_frame *r8712_dequeue_recvframe(struct __queue *queue);
137 int r8712_enqueue_recvframe(union recv_frame *precvframe,
138 struct __queue *queue);
139 int r8712_free_recvframe(union recv_frame *precvframe,
140 struct __queue *pfree_recv_queue);
141 void r8712_free_recvframe_queue(struct __queue *pframequeue,
142 struct __queue *pfree_recv_queue);
143 void r8712_init_recvframe(union recv_frame *precvframe,
144 struct recv_priv *precvpriv);
145 int r8712_wlanhdr_to_ethhdr(union recv_frame *precvframe);
146 int recv_func(struct _adapter *padapter, void *pcontext);
147
148 static inline u8 *get_rxmem(union recv_frame *precvframe)
149 {
150 /* always return rx_head... */
151 if (precvframe == NULL)
152 return NULL;
153 return precvframe->u.hdr.rx_head;
154 }
155
156 static inline u8 *get_rx_status(union recv_frame *precvframe)
157 {
158 return get_rxmem(precvframe);
159 }
160
161 static inline u8 *get_recvframe_data(union recv_frame *precvframe)
162 {
163 /* always return rx_data */
164 if (precvframe == NULL)
165 return NULL;
166 return precvframe->u.hdr.rx_data;
167 }
168
169 static inline u8 *recvframe_push(union recv_frame *precvframe, sint sz)
170 {
171 /* append data before rx_data */
172
173 /* add data to the start of recv_frame
174 *
175 * This function extends the used data area of the recv_frame at the
176 * buffer start. rx_data must be still larger than rx_head, after
177 * pushing.
178 */
179
180 if (precvframe == NULL)
181 return NULL;
182 precvframe->u.hdr.rx_data -= sz ;
183 if (precvframe->u.hdr.rx_data < precvframe->u.hdr.rx_head) {
184 precvframe->u.hdr.rx_data += sz ;
185 return NULL;
186 }
187 precvframe->u.hdr.len += sz;
188 return precvframe->u.hdr.rx_data;
189 }
190
191 static inline u8 *recvframe_pull(union recv_frame *precvframe, sint sz)
192 {
193 /* used for extract sz bytes from rx_data, update rx_data and return
194 * the updated rx_data to the caller */
195 if (precvframe == NULL)
196 return NULL;
197 precvframe->u.hdr.rx_data += sz;
198 if (precvframe->u.hdr.rx_data > precvframe->u.hdr.rx_tail) {
199 precvframe->u.hdr.rx_data -= sz;
200 return NULL;
201 }
202 precvframe->u.hdr.len -= sz;
203 return precvframe->u.hdr.rx_data;
204 }
205
206 static inline u8 *recvframe_put(union recv_frame *precvframe, sint sz)
207 {
208 /* used for append sz bytes from ptr to rx_tail, update rx_tail and
209 * return the updated rx_tail to the caller
210 * after putting, rx_tail must be still larger than rx_end. */
211 unsigned char *prev_rx_tail;
212
213 if (precvframe == NULL)
214 return NULL;
215 prev_rx_tail = precvframe->u.hdr.rx_tail;
216 precvframe->u.hdr.rx_tail += sz;
217 if (precvframe->u.hdr.rx_tail > precvframe->u.hdr.rx_end) {
218 precvframe->u.hdr.rx_tail -= sz;
219 return NULL;
220 }
221 precvframe->u.hdr.len += sz;
222 return precvframe->u.hdr.rx_tail;
223 }
224
225 static inline u8 *recvframe_pull_tail(union recv_frame *precvframe, sint sz)
226 {
227 /* rmv data from rx_tail (by yitsen)
228 * used for extract sz bytes from rx_end, update rx_end and return the
229 * updated rx_end to the caller
230 * after pulling, rx_end must be still larger than rx_data. */
231 if (precvframe == NULL)
232 return NULL;
233 precvframe->u.hdr.rx_tail -= sz;
234 if (precvframe->u.hdr.rx_tail < precvframe->u.hdr.rx_data) {
235 precvframe->u.hdr.rx_tail += sz;
236 return NULL;
237 }
238 precvframe->u.hdr.len -= sz;
239 return precvframe->u.hdr.rx_tail;
240 }
241
242 static inline _buffer *get_rxbuf_desc(union recv_frame *precvframe)
243 {
244 _buffer *buf_desc;
245 if (precvframe == NULL)
246 return NULL;
247 return buf_desc;
248 }
249
250 static inline union recv_frame *rxmem_to_recvframe(u8 *rxmem)
251 {
252 /* due to the design of 2048 bytes alignment of recv_frame, we can
253 * reference the union recv_frame from any given member of recv_frame.
254 * rxmem indicates the any member/address in recv_frame */
255 return (union recv_frame *)(((addr_t)rxmem >> RXFRAME_ALIGN) <<
256 RXFRAME_ALIGN);
257 }
258
259 static inline union recv_frame *pkt_to_recvframe(_pkt *pkt)
260 {
261 u8 *buf_star;
262 union recv_frame *precv_frame;
263
264 precv_frame = rxmem_to_recvframe((unsigned char *)buf_star);
265 return precv_frame;
266 }
267
268 static inline u8 *pkt_to_recvmem(_pkt *pkt)
269 {
270 /* return the rx_head */
271 union recv_frame *precv_frame = pkt_to_recvframe(pkt);
272
273 return precv_frame->u.hdr.rx_head;
274 }
275
276 static inline u8 *pkt_to_recvdata(_pkt *pkt)
277 {
278 /* return the rx_data */
279 union recv_frame *precv_frame = pkt_to_recvframe(pkt);
280
281 return precv_frame->u.hdr.rx_data;
282 }
283
284 static inline sint get_recvframe_len(union recv_frame *precvframe)
285 {
286 return precvframe->u.hdr.len;
287 }
288
289 struct sta_info;
290
291 void _r8712_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv);
292 sint r8712_recvframe_chkmic(struct _adapter *adapter,
293 union recv_frame *precvframe);
294 union recv_frame *r8712_decryptor(struct _adapter *adapter,
295 union recv_frame *precv_frame);
296 union recv_frame *r8712_recvframe_chk_defrag(struct _adapter *adapter,
297 union recv_frame *precv_frame);
298 union recv_frame *r8712_recvframe_defrag(struct _adapter *adapter,
299 struct __queue *defrag_q);
300 union recv_frame *r8712_recvframe_chk_defrag_new(struct _adapter *adapter,
301 union recv_frame *precv_frame);
302 union recv_frame *r8712_recvframe_defrag_new(struct _adapter *adapter,
303 struct __queue *defrag_q,
304 union recv_frame *precv_frame);
305 int r8712_recv_decache(union recv_frame *precv_frame, u8 bretry,
306 struct stainfo_rxcache *prxcache);
307 int r8712_sta2sta_data_frame(struct _adapter *adapter,
308 union recv_frame *precv_frame,
309 struct sta_info **psta);
310 int r8712_ap2sta_data_frame(struct _adapter *adapter,
311 union recv_frame *precv_frame,
312 struct sta_info **psta);
313 int r8712_sta2ap_data_frame(struct _adapter *adapter,
314 union recv_frame *precv_frame,
315 struct sta_info **psta);
316 int r8712_validate_recv_ctrl_frame(struct _adapter *adapter,
317 union recv_frame *precv_frame);
318 int r8712_validate_recv_mgnt_frame(struct _adapter *adapter,
319 union recv_frame *precv_frame);
320 int r8712_validate_recv_data_frame(struct _adapter *adapter,
321 union recv_frame *precv_frame);
322 int r8712_validate_recv_frame(struct _adapter *adapter,
323 union recv_frame *precv_frame);
324 union recv_frame *r8712_portctrl(struct _adapter *adapter,
325 union recv_frame *precv_frame);
326 void r8712_mgt_dispatcher(struct _adapter *padapter, u8 *pframe, uint len);
327 int r8712_amsdu_to_msdu(struct _adapter *padapter, union recv_frame *prframe);
328
329 #endif
330