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rtl8188eu/include/rtw_recv.h
Larry Finger 19db43ecbd rtl8188eu: Backport kernel version 
This driver was added to the kernel with version 3.12. The changes in that
version are now brought back to the GitHub repo. Essentually all of the code
is updated.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
2013-10-19 12:45:47 -05:00

485 lines
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/******************************************************************************
*
* Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
*
******************************************************************************/
#ifndef _RTW_RECV_H_
#define _RTW_RECV_H_
#include <osdep_service.h>
#include <drv_types.h>
#define NR_RECVFRAME 256
#define RXFRAME_ALIGN 8
#define RXFRAME_ALIGN_SZ (1<<RXFRAME_ALIGN)
#define MAX_RXFRAME_CNT 512
#define MAX_RX_NUMBLKS (32)
#define RECVFRAME_HDR_ALIGN 128
#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
#define MAX_SUBFRAME_COUNT 64
/* for Rx reordering buffer control */
struct recv_reorder_ctrl {
struct adapter *padapter;
u8 enable;
u16 indicate_seq;/* wstart_b, init_value=0xffff */
u16 wend_b;
u8 wsize_b;
struct __queue pending_recvframe_queue;
struct timer_list reordering_ctrl_timer;
};
struct stainfo_rxcache {
u16 tid_rxseq[16];
/*
unsigned short tid0_rxseq;
unsigned short tid1_rxseq;
unsigned short tid2_rxseq;
unsigned short tid3_rxseq;
unsigned short tid4_rxseq;
unsigned short tid5_rxseq;
unsigned short tid6_rxseq;
unsigned short tid7_rxseq;
unsigned short tid8_rxseq;
unsigned short tid9_rxseq;
unsigned short tid10_rxseq;
unsigned short tid11_rxseq;
unsigned short tid12_rxseq;
unsigned short tid13_rxseq;
unsigned short tid14_rxseq;
unsigned short tid15_rxseq;
*/
};
struct smooth_rssi_data {
u32 elements[100]; /* array to store values */
u32 index; /* index to current array to store */
u32 total_num; /* num of valid elements */
u32 total_val; /* sum of valid elements */
};
struct signal_stat {
u8 update_req; /* used to indicate */
u8 avg_val; /* avg of valid elements */
u32 total_num; /* num of valid elements */
u32 total_val; /* sum of valid elements */
};
#define MAX_PATH_NUM_92CS 2
struct phy_info {
u8 RxPWDBAll;
u8 SignalQuality; /* in 0-100 index. */
u8 RxMIMOSignalQuality[MAX_PATH_NUM_92CS]; /* EVM */
u8 RxMIMOSignalStrength[MAX_PATH_NUM_92CS];/* in 0~100 index */
s8 RxPower; /* in dBm Translate from PWdB */
/* Real power in dBm for this packet, no beautification and aggregation.
* Keep this raw info to be used for the other procedures. */
s8 recvpower;
u8 BTRxRSSIPercentage;
u8 SignalStrength; /* in 0-100 index. */
u8 RxPwr[MAX_PATH_NUM_92CS];/* per-path's pwdb */
u8 RxSNR[MAX_PATH_NUM_92CS];/* per-path's SNR */
};
struct rx_pkt_attrib {
u16 pkt_len;
u8 physt;
u8 drvinfo_sz;
u8 shift_sz;
u8 hdrlen; /* the WLAN Header Len */
u8 to_fr_ds;
u8 amsdu;
u8 qos;
u8 priority;
u8 pw_save;
u8 mdata;
u16 seq_num;
u8 frag_num;
u8 mfrag;
u8 order;
u8 privacy; /* in frame_ctrl field */
u8 bdecrypted;
u8 encrypt; /* when 0 indicate no encrypt. when non-zero,
* indicate the encrypt algorith */
u8 iv_len;
u8 icv_len;
u8 crc_err;
u8 icv_err;
u16 eth_type;
u8 dst[ETH_ALEN];
u8 src[ETH_ALEN];
u8 ta[ETH_ALEN];
u8 ra[ETH_ALEN];
u8 bssid[ETH_ALEN];
u8 ack_policy;
u8 key_index;
u8 mcs_rate;
u8 rxht;
u8 sgi;
u8 pkt_rpt_type;
u32 MacIDValidEntry[2]; /* 64 bits present 64 entry. */
struct phy_info phy_info;
};
/* These definition is used for Rx packet reordering. */
#define SN_LESS(a, b) (((a - b) & 0x800) != 0)
#define SN_EQUAL(a, b) (a == b)
#define REORDER_WAIT_TIME (50) /* (ms) */
#define RECVBUFF_ALIGN_SZ 8
#define RXDESC_SIZE 24
#define RXDESC_OFFSET RXDESC_SIZE
struct recv_stat {
__le32 rxdw0;
__le32 rxdw1;
__le32 rxdw2;
__le32 rxdw3;
__le32 rxdw4;
__le32 rxdw5;
};
#define EOR BIT(30)
/*
accesser of recv_priv: rtw_recv_entry(dispatch / passive level);
recv_thread(passive) ; returnpkt(dispatch)
; halt(passive) ;
using enter_critical section to protect
*/
struct recv_priv {
spinlock_t lock;
struct __queue free_recv_queue;
struct __queue recv_pending_queue;
struct __queue uc_swdec_pending_queue;
u8 *pallocated_frame_buf;
u8 *precv_frame_buf;
uint free_recvframe_cnt;
struct adapter *adapter;
u32 bIsAnyNonBEPkts;
u64 rx_bytes;
u64 rx_pkts;
u64 rx_drop;
u64 last_rx_bytes;
uint rx_icv_err;
uint rx_largepacket_crcerr;
uint rx_smallpacket_crcerr;
uint rx_middlepacket_crcerr;
struct semaphore allrxreturnevt;
uint ff_hwaddr;
u8 rx_pending_cnt;
struct tasklet_struct irq_prepare_beacon_tasklet;
struct tasklet_struct recv_tasklet;
struct sk_buff_head free_recv_skb_queue;
struct sk_buff_head rx_skb_queue;
u8 *pallocated_recv_buf;
u8 *precv_buf; /* 4 alignment */
struct __queue free_recv_buf_queue;
u32 free_recv_buf_queue_cnt;
/* For display the phy informatiom */
u8 is_signal_dbg; /* for debug */
u8 signal_strength_dbg; /* for debug */
s8 rssi;
s8 rxpwdb;
u8 signal_strength;
u8 signal_qual;
u8 noise;
int RxSNRdB[2];
s8 RxRssi[2];
int FalseAlmCnt_all;
struct timer_list signal_stat_timer;
u32 signal_stat_sampling_interval;
struct signal_stat signal_qual_data;
struct signal_stat signal_strength_data;
};
#define rtw_set_signal_stat_timer(recvpriv) \
_set_timer(&(recvpriv)->signal_stat_timer, \
(recvpriv)->signal_stat_sampling_interval)
struct sta_recv_priv {
spinlock_t lock;
int option;
struct __queue defrag_q; /* keeping the fragment frame until defrag */
struct stainfo_rxcache rxcache;
};
struct recv_buf {
struct list_head list;
spinlock_t recvbuf_lock;
u32 ref_cnt;
struct adapter *adapter;
u8 *pbuf;
u8 *pallocated_buf;
u32 len;
u8 *phead;
u8 *pdata;
u8 *ptail;
u8 *pend;
struct urb *purb;
dma_addr_t dma_transfer_addr; /* (in) dma addr for transfer_buffer */
u32 alloc_sz;
u8 irp_pending;
int transfer_len;
struct sk_buff *pskb;
u8 reuse;
};
/*
head ----->
data ----->
payload
tail ----->
end ----->
len = (unsigned int )(tail - data);
*/
struct recv_frame_hdr {
struct list_head list;
struct sk_buff *pkt;
struct sk_buff *pkt_newalloc;
struct adapter *adapter;
u8 fragcnt;
int frame_tag;
struct rx_pkt_attrib attrib;
uint len;
u8 *rx_head;
u8 *rx_data;
u8 *rx_tail;
u8 *rx_end;
void *precvbuf;
struct sta_info *psta;
/* for A-MPDU Rx reordering buffer control */
struct recv_reorder_ctrl *preorder_ctrl;
};
union recv_frame {
union {
struct list_head list;
struct recv_frame_hdr hdr;
uint mem[RECVFRAME_HDR_ALIGN>>2];
} u;
};
union recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue);
union recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue);
void rtw_init_recvframe(union recv_frame *precvframe,
struct recv_priv *precvpriv);
int rtw_free_recvframe(union recv_frame *precvframe,
struct __queue *pfree_recv_queue);
#define rtw_dequeue_recvframe(queue) rtw_alloc_recvframe(queue)
int _rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue);
int rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue);
void rtw_free_recvframe_queue(struct __queue *pframequeue,
struct __queue *pfree_recv_queue);
u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter);
int rtw_enqueue_recvbuf_to_head(struct recv_buf *buf, struct __queue *queue);
int rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue);
struct recv_buf *rtw_dequeue_recvbuf(struct __queue *queue);
void rtw_reordering_ctrl_timeout_handler(void *pcontext);
static inline u8 *get_rxmem(union recv_frame *precvframe)
{
/* always return rx_head... */
if (precvframe == NULL)
return NULL;
return precvframe->u.hdr.rx_head;
}
static inline u8 *get_rx_status(union recv_frame *precvframe)
{
return get_rxmem(precvframe);
}
static inline u8 *get_recvframe_data(union recv_frame *precvframe)
{
/* always return rx_data */
if (precvframe == NULL)
return NULL;
return precvframe->u.hdr.rx_data;
}
static inline u8 *recvframe_push(union recv_frame *precvframe, int sz)
{
/* append data before rx_data */
/* add data to the start of recv_frame
*
* This function extends the used data area of the recv_frame at the buffer
* start. rx_data must be still larger than rx_head, after pushing.
*/
if (precvframe == NULL)
return NULL;
precvframe->u.hdr.rx_data -= sz ;
if (precvframe->u.hdr.rx_data < precvframe->u.hdr.rx_head) {
precvframe->u.hdr.rx_data += sz;
return NULL;
}
precvframe->u.hdr.len += sz;
return precvframe->u.hdr.rx_data;
}
static inline u8 *recvframe_pull(union recv_frame *precvframe, int sz)
{
/* rx_data += sz; move rx_data sz bytes hereafter */
/* used for extract sz bytes from rx_data, update rx_data and return
* the updated rx_data to the caller */
if (precvframe == NULL)
return NULL;
precvframe->u.hdr.rx_data += sz;
if (precvframe->u.hdr.rx_data > precvframe->u.hdr.rx_tail) {
precvframe->u.hdr.rx_data -= sz;
return NULL;
}
precvframe->u.hdr.len -= sz;
return precvframe->u.hdr.rx_data;
}
static inline u8 *recvframe_put(union recv_frame *precvframe, int sz)
{
/* used for append sz bytes from ptr to rx_tail, update rx_tail
* and return the updated rx_tail to the caller */
/* after putting, rx_tail must be still larger than rx_end. */
if (precvframe == NULL)
return NULL;
precvframe->u.hdr.rx_tail += sz;
if (precvframe->u.hdr.rx_tail > precvframe->u.hdr.rx_end) {
precvframe->u.hdr.rx_tail -= sz;
return NULL;
}
precvframe->u.hdr.len += sz;
return precvframe->u.hdr.rx_tail;
}
static inline u8 *recvframe_pull_tail(union recv_frame *precvframe, int sz)
{
/* rmv data from rx_tail (by yitsen) */
/* used for extract sz bytes from rx_end, update rx_end and return
* the updated rx_end to the caller */
/* after pulling, rx_end must be still larger than rx_data. */
if (precvframe == NULL)
return NULL;
precvframe->u.hdr.rx_tail -= sz;
if (precvframe->u.hdr.rx_tail < precvframe->u.hdr.rx_data) {
precvframe->u.hdr.rx_tail += sz;
return NULL;
}
precvframe->u.hdr.len -= sz;
return precvframe->u.hdr.rx_tail;
}
static inline unsigned char *get_rxbuf_desc(union recv_frame *precvframe)
{
unsigned char *buf_desc;
if (precvframe == NULL)
return NULL;
return buf_desc;
}
static inline union recv_frame *rxmem_to_recvframe(u8 *rxmem)
{
/* due to the design of 2048 bytes alignment of recv_frame,
* we can reference the union recv_frame */
/* from any given member of recv_frame. */
/* rxmem indicates the any member/address in recv_frame */
return (union recv_frame *)(((size_t)rxmem >> RXFRAME_ALIGN) << RXFRAME_ALIGN);
}
static inline union recv_frame *pkt_to_recvframe(struct sk_buff *pkt)
{
u8 *buf_star;
union recv_frame *precv_frame;
precv_frame = rxmem_to_recvframe((unsigned char *)buf_star);
return precv_frame;
}
static inline u8 *pkt_to_recvmem(struct sk_buff *pkt)
{
/* return the rx_head */
union recv_frame *precv_frame = pkt_to_recvframe(pkt);
return precv_frame->u.hdr.rx_head;
}
static inline u8 *pkt_to_recvdata(struct sk_buff *pkt)
{
/* return the rx_data */
union recv_frame *precv_frame = pkt_to_recvframe(pkt);
return precv_frame->u.hdr.rx_data;
}
static inline int get_recvframe_len(union recv_frame *precvframe)
{
return precvframe->u.hdr.len;
}
static inline s32 translate_percentage_to_dbm(u32 sig_stren_index)
{
s32 power; /* in dBm. */
/* Translate to dBm (x=0.5y-95). */
power = (s32)((sig_stren_index + 1) >> 1);
power -= 95;
return power;
}
struct sta_info;
void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv);
void mgt_dispatcher(struct adapter *padapter, union recv_frame *precv_frame);
#endif
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