linux/drivers/staging/rtl8188eu/include/rtw_recv.h
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   1/******************************************************************************
   2 *
   3 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
   4 *
   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.
   8 *
   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
  12 * more details.
  13 *
  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
  17 *
  18 *
  19 ******************************************************************************/
  20#ifndef _RTW_RECV_H_
  21#define _RTW_RECV_H_
  22
  23#include <osdep_service.h>
  24#include <drv_types.h>
  25
  26
  27#define NR_RECVFRAME 256
  28
  29#define RXFRAME_ALIGN   8
  30#define RXFRAME_ALIGN_SZ        (1<<RXFRAME_ALIGN)
  31
  32#define MAX_RXFRAME_CNT 512
  33#define MAX_RX_NUMBLKS          (32)
  34#define RECVFRAME_HDR_ALIGN 128
  35
  36#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
  37
  38#define MAX_SUBFRAME_COUNT      64
  39
  40/* for Rx reordering buffer control */
  41struct recv_reorder_ctrl {
  42        struct adapter  *padapter;
  43        u8 enable;
  44        u16 indicate_seq;/* wstart_b, init_value=0xffff */
  45        u16 wend_b;
  46        u8 wsize_b;
  47        struct __queue pending_recvframe_queue;
  48        struct timer_list reordering_ctrl_timer;
  49};
  50
  51struct  stainfo_rxcache {
  52        u16     tid_rxseq[16];
  53/*
  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;
  70*/
  71};
  72
  73struct 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 */
  78};
  79
  80struct signal_stat {
  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 */
  85};
  86#define MAX_PATH_NUM_92CS               3
  87struct phy_info {
  88        u8      RxPWDBAll;
  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. */
  95        s8      recvpower;
  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 */
 100};
 101
 102struct rx_pkt_attrib {
 103        u16     pkt_len;
 104        u8      physt;
 105        u8      drvinfo_sz;
 106        u8      shift_sz;
 107        u8      hdrlen; /* the WLAN Header Len */
 108        u8      to_fr_ds;
 109        u8      amsdu;
 110        u8      qos;
 111        u8      priority;
 112        u8      pw_save;
 113        u8      mdata;
 114        u16     seq_num;
 115        u8      frag_num;
 116        u8      mfrag;
 117        u8      order;
 118        u8      privacy; /* in frame_ctrl field */
 119        u8      bdecrypted;
 120        u8      encrypt; /* when 0 indicate no encrypt. when non-zero,
 121                          * indicate the encrypt algorith */
 122        u8      iv_len;
 123        u8      icv_len;
 124        u8      crc_err;
 125        u8      icv_err;
 126
 127        u16 eth_type;
 128
 129        u8      dst[ETH_ALEN];
 130        u8      src[ETH_ALEN];
 131        u8      ta[ETH_ALEN];
 132        u8      ra[ETH_ALEN];
 133        u8      bssid[ETH_ALEN];
 134
 135        u8 ack_policy;
 136
 137        u8      key_index;
 138
 139        u8      mcs_rate;
 140        u8      rxht;
 141        u8      sgi;
 142        u8      pkt_rpt_type;
 143        u32     MacIDValidEntry[2];     /*  64 bits present 64 entry. */
 144
 145        struct phy_info phy_info;
 146};
 147
 148
 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) */
 153
 154#define RECVBUFF_ALIGN_SZ 8
 155
 156#define RXDESC_SIZE     24
 157#define RXDESC_OFFSET RXDESC_SIZE
 158
 159struct recv_stat {
 160        __le32 rxdw0;
 161        __le32 rxdw1;
 162        __le32 rxdw2;
 163        __le32 rxdw3;
 164        __le32 rxdw4;
 165        __le32 rxdw5;
 166};
 167
 168#define EOR BIT(30)
 169
 170/*
 171accesser of recv_priv: rtw_recv_entry(dispatch / passive level);
 172recv_thread(passive) ; returnpkt(dispatch)
 173; halt(passive) ;
 174
 175using enter_critical section to protect
 176*/
 177struct recv_priv {
 178        struct __queue free_recv_queue;
 179        struct __queue recv_pending_queue;
 180        struct __queue uc_swdec_pending_queue;
 181        u8 *pallocated_frame_buf;
 182        u8 *precv_frame_buf;
 183        uint free_recvframe_cnt;
 184        struct adapter  *adapter;
 185        u32     bIsAnyNonBEPkts;
 186        u64     rx_bytes;
 187        u64     rx_pkts;
 188        u64     rx_drop;
 189        u64     last_rx_bytes;
 190
 191        uint    ff_hwaddr;
 192        u8      rx_pending_cnt;
 193
 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 */
 205        s8 rssi;
 206        s8 rxpwdb;
 207        u8 signal_strength;
 208        u8 signal_qual;
 209        u8 noise;
 210        s8 RxRssi[2];
 211
 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;
 216};
 217
 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))
 221
 222struct sta_recv_priv {
 223        spinlock_t lock;
 224        int     option;
 225        struct __queue defrag_q; /* keeping the fragment frame until defrag */
 226        struct  stainfo_rxcache rxcache;
 227};
 228
 229struct recv_buf {
 230        struct adapter *adapter;
 231        struct urb *purb;
 232        struct sk_buff *pskb;
 233        u8      reuse;
 234};
 235
 236/*
 237        head  ----->
 238
 239                data  ----->
 240
 241                        payload
 242
 243                tail  ----->
 244
 245
 246        end   ----->
 247
 248        len = (unsigned int )(tail - data);
 249
 250*/
 251struct recv_frame {
 252        struct list_head list;
 253        struct sk_buff   *pkt;
 254        struct sk_buff   *pkt_newalloc;
 255        struct adapter  *adapter;
 256        struct rx_pkt_attrib attrib;
 257        uint  len;
 258        u8 *rx_head;
 259        u8 *rx_data;
 260        u8 *rx_tail;
 261        u8 *rx_end;
 262        struct sta_info *psta;
 263        /* for A-MPDU Rx reordering buffer control */
 264        struct recv_reorder_ctrl *preorder_ctrl;
 265};
 266
 267struct recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue);
 268struct recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue);
 269void rtw_init_recvframe(struct recv_frame *precvframe,
 270                        struct recv_priv *precvpriv);
 271int  rtw_free_recvframe(struct recv_frame *precvframe,
 272                        struct __queue *pfree_recv_queue);
 273#define rtw_dequeue_recvframe(queue) rtw_alloc_recvframe(queue)
 274int _rtw_enqueue_recvframe(struct recv_frame *precvframe,
 275                           struct __queue *queue);
 276int rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue);
 277void rtw_free_recvframe_queue(struct __queue *pframequeue,
 278                              struct __queue *pfree_recv_queue);
 279u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter);
 280
 281void rtw_reordering_ctrl_timeout_handler(unsigned long data);
 282
 283static inline u8 *get_rxmem(struct recv_frame *precvframe)
 284{
 285        /* always return rx_head... */
 286        if (precvframe == NULL)
 287                return NULL;
 288        return precvframe->rx_head;
 289}
 290
 291static inline u8 *recvframe_pull(struct recv_frame *precvframe, int sz)
 292{
 293        /*  rx_data += sz; move rx_data sz bytes  hereafter */
 294
 295        /* used for extract sz bytes from rx_data, update rx_data and return
 296         * the updated rx_data to the caller */
 297
 298        if (precvframe == NULL)
 299                return NULL;
 300        precvframe->rx_data += sz;
 301        if (precvframe->rx_data > precvframe->rx_tail) {
 302                precvframe->rx_data -= sz;
 303                return NULL;
 304        }
 305        precvframe->len -= sz;
 306        return precvframe->rx_data;
 307}
 308
 309static inline u8 *recvframe_put(struct recv_frame *precvframe, int sz)
 310{
 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. */
 314
 315        if (precvframe == NULL)
 316                return NULL;
 317
 318        precvframe->rx_tail += sz;
 319
 320        if (precvframe->rx_tail > precvframe->rx_end) {
 321                precvframe->rx_tail -= sz;
 322                return NULL;
 323        }
 324        precvframe->len += sz;
 325        return precvframe->rx_tail;
 326}
 327
 328static inline u8 *recvframe_pull_tail(struct recv_frame *precvframe, int sz)
 329{
 330        /*  rmv data from rx_tail (by yitsen) */
 331
 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. */
 335
 336        if (precvframe == NULL)
 337                return NULL;
 338        precvframe->rx_tail -= sz;
 339        if (precvframe->rx_tail < precvframe->rx_data) {
 340                precvframe->rx_tail += sz;
 341                return NULL;
 342        }
 343        precvframe->len -= sz;
 344        return precvframe->rx_tail;
 345}
 346
 347static inline s32 translate_percentage_to_dbm(u32 sig_stren_index)
 348{
 349        s32     power; /*  in dBm. */
 350
 351        /*  Translate to dBm (x=0.5y-95). */
 352        power = (s32)((sig_stren_index + 1) >> 1);
 353        power -= 95;
 354
 355        return power;
 356}
 357
 358
 359struct sta_info;
 360
 361void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv);
 362
 363void  mgt_dispatcher(struct adapter *padapter, struct recv_frame *precv_frame);
 364
 365#endif
 366
Hosted by Missing Link Electronics. The original LXR software by the LXR community, this experimental version by lxr@linux.no.