mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 17:59:32 +00:00
![Larry Finger](/assets/img/avatar_default.png)
I am preparing to convert this driver from semaphore to mutex locking, The first step has been to eliminate a number of semaphores that were initialized but never used, and one whose only use was a single "up" after initialization. A total of 9 semaphores were removed in this process. One other change was to remove some inline semaphore routines that were unused. In addition, several cases had the following structure: down() if () { ... } up() The locking overhead was reduced by moving the up/down inside the if block. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
327 lines
9 KiB
C
327 lines
9 KiB
C
#ifndef _RTL871X_RECV_H_
|
|
#define _RTL871X_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 MAX_SUBFRAME_COUNT 64
|
|
|
|
#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
|
|
|
|
/* for Rx reordering buffer control */
|
|
struct recv_reorder_ctrl {
|
|
struct _adapter *padapter;
|
|
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];
|
|
};
|
|
|
|
#define PHY_RSSI_SLID_WIN_MAX 100
|
|
#define PHY_LINKQUALITY_SLID_WIN_MAX 20
|
|
|
|
|
|
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 rx_pkt_attrib {
|
|
|
|
u8 amsdu;
|
|
u8 order;
|
|
u8 qos;
|
|
u8 to_fr_ds;
|
|
u8 frag_num;
|
|
u16 seq_num;
|
|
u8 pw_save;
|
|
u8 mfrag;
|
|
u8 mdata;
|
|
u8 privacy; /* in frame_ctrl field */
|
|
u8 bdecrypted;
|
|
int hdrlen; /* the WLAN Header Len */
|
|
int encrypt; /* 0 no encrypt. != 0 encrypt algorith */
|
|
int iv_len;
|
|
int icv_len;
|
|
int priority;
|
|
int ack_policy;
|
|
u8 crc_err;
|
|
u8 dst[ETH_ALEN];
|
|
u8 src[ETH_ALEN];
|
|
u8 ta[ETH_ALEN];
|
|
u8 ra[ETH_ALEN];
|
|
u8 bssid[ETH_ALEN];
|
|
u8 tcpchk_valid; /* 0: invalid, 1: valid */
|
|
u8 ip_chkrpt; /* 0: incorrect, 1: correct */
|
|
u8 tcp_chkrpt; /* 0: incorrect, 1: correct */
|
|
u8 signal_qual;
|
|
s8 rx_mimo_signal_qual[2];
|
|
u8 mcs_rate;
|
|
u8 htc;
|
|
u8 signal_strength;
|
|
};
|
|
|
|
/*
|
|
accesser of recv_priv: 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;
|
|
u8 *pallocated_frame_buf;
|
|
u8 *precv_frame_buf;
|
|
uint free_recvframe_cnt;
|
|
struct _adapter *adapter;
|
|
uint rx_bytes;
|
|
uint rx_pkts;
|
|
uint rx_drop;
|
|
uint rx_icv_err;
|
|
uint rx_largepacket_crcerr;
|
|
uint rx_smallpacket_crcerr;
|
|
uint rx_middlepacket_crcerr;
|
|
u8 rx_pending_cnt;
|
|
uint ff_hwaddr;
|
|
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 the phy informatiom */
|
|
s8 rssi;
|
|
u8 signal;
|
|
u8 noise;
|
|
u8 fw_rssi;
|
|
struct smooth_rssi_data signal_qual_data;
|
|
struct smooth_rssi_data signal_strength_data;
|
|
};
|
|
|
|
struct sta_recv_priv {
|
|
spinlock_t lock;
|
|
sint option;
|
|
struct __queue defrag_q; /* keeping the fragment frame until defrag */
|
|
struct stainfo_rxcache rxcache;
|
|
uint sta_rx_bytes;
|
|
uint sta_rx_pkts;
|
|
uint sta_rx_fail;
|
|
};
|
|
|
|
#include "rtl8712_recv.h"
|
|
|
|
/* get a free recv_frame from pfree_recv_queue */
|
|
union recv_frame *r8712_alloc_recvframe(struct __queue *pfree_recv_queue);
|
|
union recv_frame *r8712_dequeue_recvframe(struct __queue *queue);
|
|
int r8712_enqueue_recvframe(union recv_frame *precvframe,
|
|
struct __queue *queue);
|
|
int r8712_free_recvframe(union recv_frame *precvframe,
|
|
struct __queue *pfree_recv_queue);
|
|
void r8712_free_recvframe_queue(struct __queue *pframequeue,
|
|
struct __queue *pfree_recv_queue);
|
|
void r8712_init_recvframe(union recv_frame *precvframe,
|
|
struct recv_priv *precvpriv);
|
|
int r8712_wlanhdr_to_ethhdr(union recv_frame *precvframe);
|
|
int recv_func(struct _adapter *padapter, 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, sint 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, sint sz)
|
|
{
|
|
/* 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, sint 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. */
|
|
unsigned char *prev_rx_tail;
|
|
|
|
if (precvframe == NULL)
|
|
return NULL;
|
|
prev_rx_tail = precvframe->u.hdr.rx_tail;
|
|
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, sint 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 _buffer *get_rxbuf_desc(union recv_frame *precvframe)
|
|
{
|
|
_buffer *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 *)(((addr_t)rxmem >> RXFRAME_ALIGN) <<
|
|
RXFRAME_ALIGN);
|
|
}
|
|
|
|
static inline union recv_frame *pkt_to_recvframe(_pkt *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(_pkt *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(_pkt *pkt)
|
|
{
|
|
/* return the rx_data */
|
|
union recv_frame *precv_frame = pkt_to_recvframe(pkt);
|
|
|
|
return precv_frame->u.hdr.rx_data;
|
|
}
|
|
|
|
static inline sint get_recvframe_len(union recv_frame *precvframe)
|
|
{
|
|
return precvframe->u.hdr.len;
|
|
}
|
|
|
|
struct sta_info;
|
|
|
|
void _r8712_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv);
|
|
sint r8712_recvframe_chkmic(struct _adapter *adapter,
|
|
union recv_frame *precvframe);
|
|
union recv_frame *r8712_decryptor(struct _adapter *adapter,
|
|
union recv_frame *precv_frame);
|
|
union recv_frame *r8712_recvframe_chk_defrag(struct _adapter *adapter,
|
|
union recv_frame *precv_frame);
|
|
union recv_frame *r8712_recvframe_defrag(struct _adapter *adapter,
|
|
struct __queue *defrag_q);
|
|
union recv_frame *r8712_recvframe_chk_defrag_new(struct _adapter *adapter,
|
|
union recv_frame *precv_frame);
|
|
union recv_frame *r8712_recvframe_defrag_new(struct _adapter *adapter,
|
|
struct __queue *defrag_q,
|
|
union recv_frame *precv_frame);
|
|
int r8712_recv_decache(union recv_frame *precv_frame, u8 bretry,
|
|
struct stainfo_rxcache *prxcache);
|
|
int r8712_sta2sta_data_frame(struct _adapter *adapter,
|
|
union recv_frame *precv_frame,
|
|
struct sta_info **psta);
|
|
int r8712_ap2sta_data_frame(struct _adapter *adapter,
|
|
union recv_frame *precv_frame,
|
|
struct sta_info **psta);
|
|
int r8712_sta2ap_data_frame(struct _adapter *adapter,
|
|
union recv_frame *precv_frame,
|
|
struct sta_info **psta);
|
|
int r8712_validate_recv_ctrl_frame(struct _adapter *adapter,
|
|
union recv_frame *precv_frame);
|
|
int r8712_validate_recv_mgnt_frame(struct _adapter *adapter,
|
|
union recv_frame *precv_frame);
|
|
int r8712_validate_recv_data_frame(struct _adapter *adapter,
|
|
union recv_frame *precv_frame);
|
|
int r8712_validate_recv_frame(struct _adapter *adapter,
|
|
union recv_frame *precv_frame);
|
|
union recv_frame *r8712_portctrl(struct _adapter *adapter,
|
|
union recv_frame *precv_frame);
|
|
void r8712_mgt_dispatcher(struct _adapter *padapter, u8 *pframe, uint len);
|
|
int r8712_amsdu_to_msdu(struct _adapter *padapter, union recv_frame *prframe);
|
|
|
|
#endif
|
|
|