cregit-Linux how code gets into the kernel

Release 4.7 drivers/staging/rtl8723au/include/rtw_xmit.h

/******************************************************************************
 *
 * Copyright(c) 2007 - 2011 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.
 *
 ******************************************************************************/
#ifndef _RTW_XMIT_H_

#define _RTW_XMIT_H_

#include <osdep_service.h>
#include <drv_types.h>


#define MAX_XMITBUF_SZ		2048

#define NR_XMITBUFF		4


#define XMITBUF_ALIGN_SZ	512

/*  xmit extension buff defination */

#define MAX_XMIT_EXTBUF_SZ	1536

#define NR_XMIT_EXTBUFF		32


#define MAX_NUMBLKS		1


#define XMIT_VO_QUEUE		0

#define XMIT_VI_QUEUE		1

#define XMIT_BE_QUEUE		2

#define XMIT_BK_QUEUE		3


#define VO_QUEUE_INX		0

#define VI_QUEUE_INX		1

#define BE_QUEUE_INX		2

#define BK_QUEUE_INX		3

#define BCN_QUEUE_INX		4

#define MGT_QUEUE_INX		5

#define HIGH_QUEUE_INX		6

#define TXCMD_QUEUE_INX		7


#define HW_QUEUE_ENTRY		8


#define WEP_IV(pattrib_iv, dot11txpn, keyidx)				\
do {                                                                    \
        pattrib_iv[0] = dot11txpn._byte_.TSC0;                          \
        pattrib_iv[1] = dot11txpn._byte_.TSC1;                          \
        pattrib_iv[2] = dot11txpn._byte_.TSC2;                          \
        pattrib_iv[3] = ((keyidx & 0x3) << 6);                          \
        dot11txpn.val = (dot11txpn.val == 0xffffff) ? 0 :               \
                         (dot11txpn.val+1);                             \
} while (0)


#define TKIP_IV(pattrib_iv, dot11txpn, keyidx)				\
do {                                                                    \
        pattrib_iv[0] = dot11txpn._byte_.TSC1;                          \
        pattrib_iv[1] = (dot11txpn._byte_.TSC1 | 0x20) & 0x7f;          \
        pattrib_iv[2] = dot11txpn._byte_.TSC0;                          \
        pattrib_iv[3] = BIT(5) | ((keyidx & 0x3)<<6);                   \
        pattrib_iv[4] = dot11txpn._byte_.TSC2;                          \
        pattrib_iv[5] = dot11txpn._byte_.TSC3;                          \
        pattrib_iv[6] = dot11txpn._byte_.TSC4;                          \
        pattrib_iv[7] = dot11txpn._byte_.TSC5;                          \
        dot11txpn.val = dot11txpn.val == 0xffffffffffffULL ? 0 :        \
                                         (dot11txpn.val+1);             \
} while (0)


#define AES_IV(pattrib_iv, dot11txpn, keyidx)\
do {                                                                    \
        pattrib_iv[0] = dot11txpn._byte_.TSC0;                          \
        pattrib_iv[1] = dot11txpn._byte_.TSC1;                          \
        pattrib_iv[2] = 0;                                              \
        pattrib_iv[3] = BIT(5) | ((keyidx & 0x3) << 6);                 \
        pattrib_iv[4] = dot11txpn._byte_.TSC2;                          \
        pattrib_iv[5] = dot11txpn._byte_.TSC3;                          \
        pattrib_iv[6] = dot11txpn._byte_.TSC4;                          \
        pattrib_iv[7] = dot11txpn._byte_.TSC5;                          \
        dot11txpn.val = dot11txpn.val == 0xffffffffffffULL ? 0 :        \
                                         (dot11txpn.val+1);             \
} while (0)


#define HWXMIT_ENTRY	4


#define TXDESC_SIZE 32


#define PACKET_OFFSET_SZ 8

#define TXDESC_OFFSET (TXDESC_SIZE + PACKET_OFFSET_SZ)


struct tx_desc {
	/* DWORD 0 */
	
__le32 txdw0;
	
__le32 txdw1;
	
__le32 txdw2;
	
__le32 txdw3;
	
__le32 txdw4;
	
__le32 txdw5;
	
__le32 txdw6;
	
__le32 txdw7;
};


union txdesc {
	
struct tx_desc txdesc;
	
unsigned int value[TXDESC_SIZE>>2];
};


struct	hw_xmit	{
	
struct rtw_queue *sta_queue;
	
int	accnt;
};

/* reduce size */

struct pkt_attrib {
	
u16	type;
	
u8	bswenc;
	
u8	dhcp_pkt;
	
u16	ether_type;
	
u16	seqnum;
	
u16	pkt_hdrlen;	/* the original 802.3 pkt header len */
	
u16	hdrlen;		/* the WLAN Header Len */
	
u32	pktlen;		/* the original 802.3 pkt raw_data len */
	
u32	last_txcmdsz;
	
u32	encrypt;	/* when 0 indicate no encrypt. */
	
u8	nr_frags;
	
u8	iv_len;
	
u8	icv_len;
	
u8	iv[18];
	
u8	icv[16];
	
u8	priority;
	
u8	ack_policy;
	
u8	mac_id;
	
u8	vcs_mode;	/* virtual carrier sense method */
	
u8	dst[ETH_ALEN];
	
u8	src[ETH_ALEN];
	
u8	ta[ETH_ALEN];
	
u8	ra[ETH_ALEN];
	
u8	key_idx;
	
u8	qos_en;
	
u8	ht_en;
	
u8	raid;/* rate adpative id */
	
u8	bwmode;
	
u8	ch_offset;/* PRIME_CHNL_OFFSET */
	
u8	sgi;/* short GI */
	
u8	ampdu_en;/* tx ampdu enable */
	
u8	mdata;/* more data bit */
	
u8	pctrl;/* per packet txdesc control enable */
	
u8	triggered;/* for ap mode handling Power Saving sta */
	
u8	qsel;
	
u8	eosp;
	
u8	rate;
	
u8	retry_ctrl;
	
struct sta_info *psta;
};


#define WLANHDR_OFFSET		64


#define NULL_FRAMETAG		0x0

#define DATA_FRAMETAG		0x01

#define L2_FRAMETAG		0x02

#define MGNT_FRAMETAG		0x03

#define AMSDU_FRAMETAG		0x04


#define EII_FRAMETAG		0x05

#define IEEE8023_FRAMETAG 	0x06


#define MP_FRAMETAG		0x07


#define TXAGG_FRAMETAG		0x08


struct  submit_ctx {
	
u32 timeout_ms; /* <0: not synchronous, 0: wait forever,
                         * >0: up to ms waiting
                         */
	
int status; /* status for operation */
	
struct completion done;
};

enum {
	
RTW_SCTX_SUBMITTED = -1,
	
RTW_SCTX_DONE_SUCCESS = 0,
	
RTW_SCTX_DONE_UNKNOWN,
	
RTW_SCTX_DONE_TIMEOUT,
	
RTW_SCTX_DONE_BUF_ALLOC,
	
RTW_SCTX_DONE_BUF_FREE,
	
RTW_SCTX_DONE_WRITE_PORT_ERR,
	
RTW_SCTX_DONE_TX_DESC_NA,
	
RTW_SCTX_DONE_TX_DENY,
	
RTW_SCTX_DONE_CCX_PKT_FAIL,
	
RTW_SCTX_DONE_DRV_STOP,
	
RTW_SCTX_DONE_DEV_REMOVE,
};

void rtw_sctx_init23a(struct submit_ctx *sctx, int timeout_ms);
int rtw_sctx_wait23a(struct submit_ctx *sctx);
void rtw23a_sctx_done_err(struct submit_ctx **sctx, int status);


struct xmit_buf {
	

struct list_head list, list2;
	
struct rtw_adapter *padapter;

	
u8 *pallocated_buf;
	
u8 *pbuf;
	
void *priv_data;

	
u16 ext_tag; /*  0: Normal xmitbuf, 1: extension xmitbuf. */
	
u16 flags;
	
u32 alloc_sz;
	
u32  len;
	
struct submit_ctx *sctx;
	
u32	ff_hwaddr;
	
struct urb *pxmit_urb[8];
	
u8 bpending[8];
	
int last[8];
#if defined(DBG_XMIT_BUF) || defined(DBG_XMIT_BUF_EXT)
	
u8 no;
#endif
};


struct xmit_frame {
	
struct list_head	list;
	
struct pkt_attrib attrib;
	
struct sk_buff *pkt;
	
int	frame_tag;
	
struct rtw_adapter *padapter;
	
u8	*buf_addr;
	
struct xmit_buf *pxmitbuf;

	
s8	pkt_offset;

	
u8 ack_report;

	
u8 ext_tag; /* 0:data, 1:mgmt */
};


struct tx_servq {
	
struct list_head	tx_pending;
	
struct rtw_queue	sta_pending;
	
int qcnt;
};


struct sta_xmit_priv {
	
spinlock_t	lock;
	
int	option;
	
int	apsd_setting;	/* When bit mask is on, the associated edca
                                 * queue supports APSD.
                                 */
	
struct tx_servq	be_q;			/* priority == 0,3 */
	
struct tx_servq	bk_q;			/* priority == 1,2 */
	
struct tx_servq	vi_q;			/* priority == 4,5 */
	
struct tx_servq	vo_q;			/* priority == 6,7 */
	
struct list_head legacy_dz;
	
struct list_head apsd;
	
u16 txseq_tid[16];
};


struct	hw_txqueue {
	
volatile int head;
	
volatile int tail;
	
volatile int free_sz;	/* in units of 64 bytes */
	
volatile int free_cmdsz;
	
volatile int txsz[8];
	
uint	ff_hwaddr;
	
uint	cmd_hwaddr;
	
int	ac_tag;
};


struct agg_pkt_info {
	
u16 offset;
	
u16 pkt_len;
};


struct	xmit_priv {
	
spinlock_t	lock;

	
struct semaphore	xmit_sema;
	
struct semaphore	terminate_xmitthread_sema;

	
struct rtw_queue	be_pending;
	
struct rtw_queue	bk_pending;
	
struct rtw_queue	vi_pending;
	
struct rtw_queue	vo_pending;
	
struct rtw_queue	bm_pending;

	
int free_xmitframe_cnt;
	
struct rtw_queue	free_xmit_queue;

	
int free_xframe_ext_cnt;
	
struct rtw_queue free_xframe_ext_queue;

	
uint	frag_len;

	
struct rtw_adapter	*adapter;

	
u64	tx_bytes;
	
u64	tx_pkts;
	
u64	tx_drop;
	
u64	last_tx_bytes;
	
u64	last_tx_pkts;

	
struct hw_xmit *hwxmits;
	
u8	hwxmit_entry;
	
u8	vcs;
	
u8	nqos_ssn;

	
u8	wmm_para_seq[4];/* sequence for wmm ac parameter strength from
                                 * large to small. it's value is 0->vo, 1->vi,
                                 * 2->be, 3->bk.
                                 */

	
struct semaphore	tx_retevt;/* all tx return event; */

	
struct tasklet_struct xmit_tasklet;

	
struct rtw_queue free_xmitbuf_queue;
	
struct list_head xmitbuf_list;		/* track buffers for cleanup */
	
struct rtw_queue pending_xmitbuf_queue;
	
uint free_xmitbuf_cnt;

	
struct rtw_queue free_xmit_extbuf_queue;
	
struct list_head xmitextbuf_list;	/* track buffers for cleanup */
	
uint free_xmit_extbuf_cnt;

	
int	ack_tx;
	
struct mutex ack_tx_mutex;
	
struct submit_ctx ack_tx_ops;
	
spinlock_t lock_sctx;
};

struct xmit_buf *rtw_alloc_xmitbuf23a_ext(struct xmit_priv *pxmitpriv);
s32 rtw_free_xmitbuf_ext23a(struct xmit_priv *pxmitpriv,
			 struct xmit_buf *pxmitbuf);

struct xmit_buf *rtw_alloc_xmitbuf23a(struct xmit_priv *pxmitpriv);
s32 rtw_free_xmitbuf23a(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf);

void rtw_count_tx_stats23a(struct rtw_adapter *padapter,
			struct xmit_frame *pxmitframe, int sz);
void rtw_update_protection23a(struct rtw_adapter *padapter, u8 *ie, uint ie_len);
struct xmit_frame *rtw_alloc_xmitframe23a_ext(struct xmit_priv *pxmitpriv);
struct xmit_frame *rtw_alloc_xmitframe23a_once(struct xmit_priv *pxmitpriv);
s32 rtw_free_xmitframe23a(struct xmit_priv *pxmitpriv,
		       struct xmit_frame *pxmitframe);
void rtw_free_xmitframe_queue23a(struct xmit_priv *pxmitpriv, struct rtw_queue *pframequeue);
struct tx_servq *rtw_get_sta_pending23a(struct rtw_adapter *padapter,
				     struct sta_info *psta, int up, u8 *ac);
s32 rtw_xmitframe_enqueue23a(struct rtw_adapter *padapter,
			     struct xmit_frame *pxmitframe);
struct xmit_frame *rtw_dequeue_xframe23a(struct xmit_priv *pxmitpriv,
				      struct hw_xmit *phwxmit_i, int entry);
s32 rtw_xmit23a_classifier(struct rtw_adapter *padapter,
			struct xmit_frame *pxmitframe);
s32 rtw_xmitframe_coalesce23a(struct rtw_adapter *padapter, struct sk_buff *pkt,
			      struct xmit_frame *pxmitframe);
s32 _rtw_init_hw_txqueue(struct hw_txqueue *phw_txqueue, u8 ac_tag);
void _rtw_init_sta_xmit_priv23a(struct sta_xmit_priv *psta_xmitpriv);

s32 rtw_txframes_pending23a(struct rtw_adapter *padapter);
s32 rtw_txframes_sta_ac_pending23a(struct rtw_adapter *padapter,
				struct pkt_attrib *pattrib);
void rtw_init_hwxmits23a(struct hw_xmit *phwxmit, int entry);
int _rtw_init_xmit_priv23a(struct xmit_priv *pxmitpriv,
			struct rtw_adapter *padapter);
void _rtw_free_xmit_priv23a(struct xmit_priv *pxmitpriv);
void rtw_alloc_hwxmits23a(struct rtw_adapter *padapter);
void rtw_free_hwxmits23a(struct rtw_adapter *padapter);
int rtw_xmit23a(struct rtw_adapter *padapter, struct sk_buff *pkt);
#if defined(CONFIG_8723AU_AP_MODE)
int xmitframe_enqueue_for_sleeping_sta23a(struct rtw_adapter *padapter,
				       struct xmit_frame *pxmitframe);
void stop_sta_xmit23a(struct rtw_adapter *padapter, struct sta_info *psta);
void wakeup_sta_to_xmit23a(struct rtw_adapter *padapter, struct sta_info *psta);
void xmit_delivery_enabled_frames23a(struct rtw_adapter *padapter,
				  struct sta_info *psta);
#endif
u8	qos_acm23a(u8 acm_mask, u8 priority);
u32	rtw_get_ff_hwaddr23a(struct xmit_frame	*pxmitframe);
int rtw_ack_tx_wait23a(struct xmit_priv *pxmitpriv, u32 timeout_ms);

/* include after declaring struct xmit_buf, in order to avoid warning */
#include <xmit_osdep.h>

#endif	/* _RTL871X_XMIT_H_ */

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