1 /******************************************************************************
3 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
19 ******************************************************************************/
23 #include <osdep_service.h>
24 #include <drv_types.h>
27 #define NR_RECVFRAME 256
29 #define RXFRAME_ALIGN 8
30 #define RXFRAME_ALIGN_SZ (1<<RXFRAME_ALIGN)
32 #define MAX_RXFRAME_CNT 512
33 #define MAX_RX_NUMBLKS (32)
34 #define RECVFRAME_HDR_ALIGN 128
36 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
38 #define MAX_SUBFRAME_COUNT 64
40 /* for Rx reordering buffer control */
41 struct recv_reorder_ctrl {
42 struct adapter *padapter;
44 u16 indicate_seq;/* wstart_b, init_value=0xffff */
47 struct __queue pending_recvframe_queue;
48 struct timer_list reordering_ctrl_timer;
51 struct stainfo_rxcache {
54 unsigned short tid0_rxseq;
55 unsigned short tid1_rxseq;
56 unsigned short tid2_rxseq;
57 unsigned short tid3_rxseq;
58 unsigned short tid4_rxseq;
59 unsigned short tid5_rxseq;
60 unsigned short tid6_rxseq;
61 unsigned short tid7_rxseq;
62 unsigned short tid8_rxseq;
63 unsigned short tid9_rxseq;
64 unsigned short tid10_rxseq;
65 unsigned short tid11_rxseq;
66 unsigned short tid12_rxseq;
67 unsigned short tid13_rxseq;
68 unsigned short tid14_rxseq;
69 unsigned short tid15_rxseq;
73 struct smooth_rssi_data {
74 u32 elements[100]; /* array to store values */
75 u32 index; /* index to current array to store */
76 u32 total_num; /* num of valid elements */
77 u32 total_val; /* sum of valid elements */
81 u8 update_req; /* used to indicate */
82 u8 avg_val; /* avg of valid elements */
83 u32 total_num; /* num of valid elements */
84 u32 total_val; /* sum of valid elements */
86 #define MAX_PATH_NUM_92CS 3
89 u8 SignalQuality; /* in 0-100 index. */
90 u8 RxMIMOSignalQuality[MAX_PATH_NUM_92CS]; /* EVM */
91 u8 RxMIMOSignalStrength[MAX_PATH_NUM_92CS];/* in 0~100 index */
92 s8 RxPower; /* in dBm Translate from PWdB */
93 /* Real power in dBm for this packet, no beautification and aggregation.
94 * Keep this raw info to be used for the other procedures. */
96 u8 BTRxRSSIPercentage;
97 u8 SignalStrength; /* in 0-100 index. */
98 u8 RxPwr[MAX_PATH_NUM_92CS];/* per-path's pwdb */
99 u8 RxSNR[MAX_PATH_NUM_92CS];/* per-path's SNR */
102 struct rx_pkt_attrib {
107 u8 hdrlen; /* the WLAN Header Len */
118 u8 privacy; /* in frame_ctrl field */
120 u8 encrypt; /* when 0 indicate no encrypt. when non-zero,
121 * indicate the encrypt algorith */
143 u32 MacIDValidEntry[2]; /* 64 bits present 64 entry. */
145 struct phy_info phy_info;
149 /* These definition is used for Rx packet reordering. */
150 #define SN_LESS(a, b) (((a - b) & 0x800) != 0)
151 #define SN_EQUAL(a, b) (a == b)
152 #define REORDER_WAIT_TIME (50) /* (ms) */
154 #define RECVBUFF_ALIGN_SZ 8
156 #define RXDESC_SIZE 24
157 #define RXDESC_OFFSET RXDESC_SIZE
171 accesser of recv_priv: rtw_recv_entry(dispatch / passive level);
172 recv_thread(passive) ; returnpkt(dispatch)
175 using enter_critical section to protect
178 struct __queue free_recv_queue;
179 struct __queue recv_pending_queue;
180 struct __queue uc_swdec_pending_queue;
181 u8 *pallocated_frame_buf;
183 uint free_recvframe_cnt;
184 struct adapter *adapter;
194 struct tasklet_struct irq_prepare_beacon_tasklet;
195 struct tasklet_struct recv_tasklet;
196 struct sk_buff_head free_recv_skb_queue;
197 struct sk_buff_head rx_skb_queue;
198 u8 *pallocated_recv_buf;
199 u8 *precv_buf; /* 4 alignment */
200 struct __queue free_recv_buf_queue;
201 u32 free_recv_buf_queue_cnt;
202 /* For display the phy informatiom */
203 u8 is_signal_dbg; /* for debug */
204 u8 signal_strength_dbg; /* for debug */
212 struct timer_list signal_stat_timer;
213 u32 signal_stat_sampling_interval;
214 struct signal_stat signal_qual_data;
215 struct signal_stat signal_strength_data;
218 #define rtw_set_signal_stat_timer(recvpriv) \
219 mod_timer(&(recvpriv)->signal_stat_timer, jiffies + \
220 msecs_to_jiffies((recvpriv)->signal_stat_sampling_interval))
222 struct sta_recv_priv {
225 struct __queue defrag_q; /* keeping the fragment frame until defrag */
226 struct stainfo_rxcache rxcache;
230 struct adapter *adapter;
232 struct sk_buff *pskb;
248 len = (unsigned int )(tail - data);
252 struct list_head list;
254 struct sk_buff *pkt_newalloc;
255 struct adapter *adapter;
256 struct rx_pkt_attrib attrib;
262 struct sta_info *psta;
263 /* for A-MPDU Rx reordering buffer control */
264 struct recv_reorder_ctrl *preorder_ctrl;
267 struct recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue);
268 struct recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue);
269 void rtw_init_recvframe(struct recv_frame *precvframe,
270 struct recv_priv *precvpriv);
271 int rtw_free_recvframe(struct recv_frame *precvframe,
272 struct __queue *pfree_recv_queue);
273 #define rtw_dequeue_recvframe(queue) rtw_alloc_recvframe(queue)
274 int _rtw_enqueue_recvframe(struct recv_frame *precvframe,
275 struct __queue *queue);
276 int rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue);
277 void rtw_free_recvframe_queue(struct __queue *pframequeue,
278 struct __queue *pfree_recv_queue);
279 u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter);
281 void rtw_reordering_ctrl_timeout_handler(unsigned long data);
283 static inline u8 *get_rxmem(struct recv_frame *precvframe)
285 /* always return rx_head... */
286 if (precvframe == NULL)
288 return precvframe->rx_head;
291 static inline u8 *recvframe_pull(struct recv_frame *precvframe, int sz)
293 /* rx_data += sz; move rx_data sz bytes hereafter */
295 /* used for extract sz bytes from rx_data, update rx_data and return
296 * the updated rx_data to the caller */
298 if (precvframe == NULL)
300 precvframe->rx_data += sz;
301 if (precvframe->rx_data > precvframe->rx_tail) {
302 precvframe->rx_data -= sz;
305 precvframe->len -= sz;
306 return precvframe->rx_data;
309 static inline u8 *recvframe_put(struct recv_frame *precvframe, int sz)
311 /* used for append sz bytes from ptr to rx_tail, update rx_tail
312 * and return the updated rx_tail to the caller */
313 /* after putting, rx_tail must be still larger than rx_end. */
315 if (precvframe == NULL)
318 precvframe->rx_tail += sz;
320 if (precvframe->rx_tail > precvframe->rx_end) {
321 precvframe->rx_tail -= sz;
324 precvframe->len += sz;
325 return precvframe->rx_tail;
328 static inline u8 *recvframe_pull_tail(struct recv_frame *precvframe, int sz)
330 /* rmv data from rx_tail (by yitsen) */
332 /* used for extract sz bytes from rx_end, update rx_end and return
333 * the updated rx_end to the caller */
334 /* after pulling, rx_end must be still larger than rx_data. */
336 if (precvframe == NULL)
338 precvframe->rx_tail -= sz;
339 if (precvframe->rx_tail < precvframe->rx_data) {
340 precvframe->rx_tail += sz;
343 precvframe->len -= sz;
344 return precvframe->rx_tail;
347 static inline s32 translate_percentage_to_dbm(u32 sig_stren_index)
349 s32 power; /* in dBm. */
351 /* Translate to dBm (x=0.5y-95). */
352 power = (s32)((sig_stren_index + 1) >> 1);
361 void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv);
363 void mgt_dispatcher(struct adapter *padapter, struct recv_frame *precv_frame);