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alistair23-linux/drivers/staging/rtl8712/rtl871x_xmit.h
Kees Cook 6cfed59848 staging: rtl*: Remove tasklet callback casts 
In order to make the entire kernel usable under Clang's Control Flow
Integrity protections, function prototype casts need to be avoided
because this will trip CFI checks at runtime (i.e. a mismatch between
the caller's expected function prototype and the destination function's
prototype). Many of these cases can be found with -Wcast-function-type,
which found that the rtl wifi drivers had a bunch of needless function
casts. Remove function casts for tasklet callbacks in the various drivers.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/201911150926.2894A4F973@keescook
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-16 14:41:02 +01:00

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/* SPDX-License-Identifier: GPL-2.0 */
/******************************************************************************
*
* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
*
* Modifications for inclusion into the Linux staging tree are
* Copyright(c) 2010 Larry Finger. All rights reserved.
*
* Contact information:
* WLAN FAE <wlanfae@realtek.com>
* Larry Finger <Larry.Finger@lwfinger.net>
*
******************************************************************************/
#ifndef _RTL871X_XMIT_H_
#define _RTL871X_XMIT_H_
#include "osdep_service.h"
#include "drv_types.h"
#include "xmit_osdep.h"
#ifdef CONFIG_R8712_TX_AGGR
#define MAX_XMITBUF_SZ (16384)
#else
#define MAX_XMITBUF_SZ (2048)
#endif
#define NR_XMITBUFF (4)
#ifdef CONFIG_R8712_TX_AGGR
#define AGGR_NR_HIGH_BOUND (4) /*(8) */
#define AGGR_NR_LOW_BOUND (2)
#endif
#define XMITBUF_ALIGN_SZ 512
#define TX_GUARD_BAND 5
#define MAX_NUMBLKS (1)
/* Fixed the Big Endian bug when using the software driver encryption.*/
#define WEP_IV(pattrib_iv, txpn, keyidx)\
do { \
pattrib_iv[0] = txpn._byte_.TSC0;\
pattrib_iv[1] = txpn._byte_.TSC1;\
pattrib_iv[2] = txpn._byte_.TSC2;\
pattrib_iv[3] = ((keyidx & 0x3) << 6);\
txpn.val = (txpn.val == 0xffffff) ? 0 : (txpn.val+1);\
} while (0)
/* Fixed the Big Endian bug when doing the Tx.
* The Linksys WRH54G will check this.
*/
#define TKIP_IV(pattrib_iv, txpn, keyidx)\
do { \
pattrib_iv[0] = txpn._byte_.TSC1;\
pattrib_iv[1] = (txpn._byte_.TSC1 | 0x20) & 0x7f;\
pattrib_iv[2] = txpn._byte_.TSC0;\
pattrib_iv[3] = BIT(5) | ((keyidx & 0x3)<<6);\
pattrib_iv[4] = txpn._byte_.TSC2;\
pattrib_iv[5] = txpn._byte_.TSC3;\
pattrib_iv[6] = txpn._byte_.TSC4;\
pattrib_iv[7] = txpn._byte_.TSC5;\
txpn.val = txpn.val == 0xffffffffffffULL ? 0 : \
(txpn.val+1);\
} while (0)
#define AES_IV(pattrib_iv, txpn, keyidx)\
do { \
pattrib_iv[0] = txpn._byte_.TSC0;\
pattrib_iv[1] = txpn._byte_.TSC1;\
pattrib_iv[2] = 0;\
pattrib_iv[3] = BIT(5) | ((keyidx & 0x3)<<6);\
pattrib_iv[4] = txpn._byte_.TSC2;\
pattrib_iv[5] = txpn._byte_.TSC3;\
pattrib_iv[6] = txpn._byte_.TSC4;\
pattrib_iv[7] = txpn._byte_.TSC5;\
txpn.val = txpn.val == 0xffffffffffffULL ? 0 : \
(txpn.val+1);\
} while (0)
struct hw_xmit {
spinlock_t xmit_lock;
struct list_head pending;
struct __queue *sta_queue;
struct hw_txqueue *phwtxqueue;
sint txcmdcnt;
int accnt;
};
struct pkt_attrib {
u8 type;
u8 subtype;
u8 bswenc;
u8 dhcp_pkt;
u16 seqnum;
u16 ether_type;
u16 pktlen; /* the original 802.3 pkt raw_data len
* (not include ether_hdr data)
*/
u16 last_txcmdsz;
u8 pkt_hdrlen; /*the original 802.3 pkt header len*/
u8 hdrlen; /*the WLAN Header Len*/
u8 nr_frags;
u8 ack_policy;
u8 mac_id;
u8 vcs_mode; /*virtual carrier sense method*/
u8 pctrl;/*per packet txdesc control enable*/
u8 qsel;
u8 priority;
u8 encrypt; /* when 0 indicate no encrypt. when non-zero,
* indicate the encrypt algorithm
*/
u8 iv_len;
u8 icv_len;
unsigned char iv[8];
unsigned char icv[8];
u8 dst[ETH_ALEN];
u8 src[ETH_ALEN];
u8 ta[ETH_ALEN];
u8 ra[ETH_ALEN];
struct sta_info *psta;
};
#define WLANHDR_OFFSET 64
#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 xmit_buf {
struct list_head list;
u8 *pallocated_buf;
u8 *pbuf;
void *priv_data;
struct urb *pxmit_urb[8];
u32 aggr_nr;
};
struct xmit_frame {
struct list_head list;
struct pkt_attrib attrib;
_pkt *pkt;
int frame_tag;
struct _adapter *padapter;
u8 *buf_addr;
struct xmit_buf *pxmitbuf;
u8 *mem_addr;
u16 sz[8];
struct urb *pxmit_urb[8];
u8 bpending[8];
u8 last[8];
};
struct tx_servq {
struct list_head tx_pending;
struct __queue sta_pending;
int qcnt;
};
struct sta_xmit_priv {
spinlock_t lock;
sint option;
sint 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];
uint sta_tx_bytes;
u64 sta_tx_pkts;
uint sta_tx_fail;
};
struct hw_txqueue {
/*volatile*/ sint head;
/*volatile*/ sint tail;
/*volatile*/ sint free_sz; /*in units of 64 bytes*/
/*volatile*/ sint free_cmdsz;
/*volatile*/ sint txsz[8];
uint ff_hwaddr;
uint cmd_hwaddr;
sint ac_tag;
};
struct xmit_priv {
spinlock_t lock;
struct __queue be_pending;
struct __queue bk_pending;
struct __queue vi_pending;
struct __queue vo_pending;
struct __queue bm_pending;
struct __queue legacy_dz_queue;
struct __queue apsd_queue;
u8 *pallocated_frame_buf;
u8 *pxmit_frame_buf;
uint free_xmitframe_cnt;
uint mapping_addr;
uint pkt_sz;
struct __queue free_xmit_queue;
struct hw_txqueue be_txqueue;
struct hw_txqueue bk_txqueue;
struct hw_txqueue vi_txqueue;
struct hw_txqueue vo_txqueue;
struct hw_txqueue bmc_txqueue;
uint frag_len;
struct _adapter *adapter;
u8 vcs_setting;
u8 vcs;
u8 vcs_type;
u16 rts_thresh;
uint tx_bytes;
u64 tx_pkts;
uint tx_drop;
struct hw_xmit *hwxmits;
u8 hwxmit_entry;
u8 txirp_cnt;
struct tasklet_struct xmit_tasklet;
struct work_struct xmit_pipe4_reset_wi;
struct work_struct xmit_pipe6_reset_wi;
struct work_struct xmit_piped_reset_wi;
/*per AC pending irp*/
int beq_cnt;
int bkq_cnt;
int viq_cnt;
int voq_cnt;
struct __queue free_amsdu_xmit_queue;
u8 *pallocated_amsdu_frame_buf;
u8 *pxmit_amsdu_frame_buf;
uint free_amsdu_xmitframe_cnt;
struct __queue free_txagg_xmit_queue;
u8 *pallocated_txagg_frame_buf;
u8 *pxmit_txagg_frame_buf;
uint free_txagg_xmitframe_cnt;
int cmdseq;
struct __queue free_xmitbuf_queue;
struct __queue pending_xmitbuf_queue;
u8 *pallocated_xmitbuf;
u8 *pxmitbuf;
uint free_xmitbuf_cnt;
};
void r8712_free_xmitbuf(struct xmit_priv *pxmitpriv,
struct xmit_buf *pxmitbuf);
struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv);
void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len);
struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv);
void r8712_free_xmitframe(struct xmit_priv *pxmitpriv,
struct xmit_frame *pxmitframe);
void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv,
struct __queue *pframequeue);
int r8712_xmit_classifier(struct _adapter *padapter,
struct xmit_frame *pxmitframe);
sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt,
struct xmit_frame *pxmitframe);
sint _r8712_init_hw_txqueue(struct hw_txqueue *phw_txqueue, u8 ac_tag);
void _r8712_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv);
int r8712_update_attrib(struct _adapter *padapter, _pkt *pkt,
struct pkt_attrib *pattrib);
int r8712_txframes_sta_ac_pending(struct _adapter *padapter,
struct pkt_attrib *pattrib);
int _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv,
struct _adapter *padapter);
void _free_xmit_priv(struct xmit_priv *pxmitpriv);
void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv,
struct xmit_frame *pxmitframe);
int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe);
int r8712_xmit_enqueue(struct _adapter *padapter,
struct xmit_frame *pxmitframe);
void r8712_xmit_direct(struct _adapter *padapter, struct xmit_frame *pxmitframe);
void r8712_xmit_bh(unsigned long priv);
void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
struct xmit_buf *pxmitbuf);
#include "rtl8712_xmit.h"
#endif /*_RTL871X_XMIT_H_*/
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