staging: rtl8712: switch to common ieee80211 headers

This patch switches to <linux/ieee80211.h> and <net/cfg80211.h> and
deletes a lot of duplicate definitions plus many unused ones.

Non obvious changes:
- struct ieee80211_ht_cap is different enough that I preferred to keep
  (and rename) it for now.
- mcs_rate in translate_scan was not read after being set, so I deleted
  that part rather than using the renamed struct
- WLAN_CAPABILITY_BSS is replaced with WLAN_CAPABILITY_ESS which is the
  corresponding one with same value
Signed-off-by: Pascal Terjan <pterjan@google.com>
Link: https://lore.kernel.org/r/20200609194848.166130-1-pterjan@google.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/Kconfig

 # SPDX-License-Identifier: GPL-2.0
 config R8712U
 	tristate "RealTek RTL8712U (RTL8192SU) Wireless LAN NIC driver"
-	depends on WLAN && USB
+	depends on WLAN && USB && CFG80211
 	select WIRELESS_EXT
 	select WEXT_PRIV
 	select FW_LOADER

drivers/staging/rtl8712/rtl8712_recv.c

@@ -18,6 +18,7 @@
 
 #include <linux/if_ether.h>
 #include <linux/ip.h>
+#include <net/cfg80211.h>
 
 #include "osdep_service.h"
 #include "drv_types.h"
@@ -27,12 +28,6 @@
 #include "usb_ops.h"
 #include "wifi.h"
 
-/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
-static u8 bridge_tunnel_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8};
-
-/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
-static u8 rfc1042_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
-
 static void recv_tasklet(unsigned long priv);
 
 void r8712_init_recv_priv(struct recv_priv *precvpriv,

drivers/staging/rtl8712/rtl871x_ht.h

@@ -26,7 +26,7 @@ struct ht_priv {
 	unsigned int	rx_ampdu_maxlen; /* for rx reordering ctrl win_sz,
 					  * updated when join_callback.
 					  */
-	struct ieee80211_ht_cap ht_cap;
+	struct rtl_ieee80211_ht_cap ht_cap;
 };
 
 #endif	/*_RTL871X_HT_H_ */

drivers/staging/rtl8712/rtl871x_ioctl_linux.c

@@ -211,11 +211,10 @@ static char *translate_scan(struct _adapter *padapter,
 			    char *start, char *stop)
 {
 	struct iw_event iwe;
-	struct ieee80211_ht_cap *pht_capie;
 	char *current_val;
 	s8 *p;
 	u32 i = 0, ht_ielen = 0;
-	u16	cap, ht_cap = false, mcs_rate;
+	u16	cap, ht_cap = false;
 	u8 rssi;
 
 	if ((pnetwork->network.Configuration.DSConfig < 1) ||
@@ -241,8 +240,6 @@ static char *translate_scan(struct _adapter *padapter,
 			 &ht_ielen, pnetwork->network.IELength - 12);
 	if (p && ht_ielen > 0) {
 		ht_cap = true;
-		pht_capie = (struct ieee80211_ht_cap *)(p + 2);
-		memcpy(&mcs_rate, pht_capie->supp_mcs_set, 2);
 	}
 	/* Add the protocol name */
 	iwe.cmd = SIOCGIWNAME;
@@ -268,8 +265,8 @@ static char *translate_scan(struct _adapter *padapter,
 	memcpy((u8 *)&cap, r8712_get_capability_from_ie(pnetwork->network.IEs),
 		2);
 	le16_to_cpus(&cap);
-	if (cap & (WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_BSS)) {
-		if (cap & WLAN_CAPABILITY_BSS)
+	if (cap & (WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_ESS)) {
+		if (cap & WLAN_CAPABILITY_ESS)
 			iwe.u.mode = (u32)IW_MODE_MASTER;
 		else
 			iwe.u.mode = (u32)IW_MODE_ADHOC;
@@ -1395,7 +1392,7 @@ static int r8711_wx_get_rate(struct net_device *dev,
 	struct _adapter *padapter = netdev_priv(dev);
 	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 	struct wlan_bssid_ex *pcur_bss = &pmlmepriv->cur_network.network;
-	struct ieee80211_ht_cap *pht_capie;
+	struct rtl_ieee80211_ht_cap *pht_capie;
 	unsigned char rf_type = padapter->registrypriv.rf_config;
 	int i;
 	u8 *p;
@@ -1411,7 +1408,7 @@ static int r8711_wx_get_rate(struct net_device *dev,
 			 pcur_bss->IELength - 12);
 	if (p && ht_ielen > 0) {
 		ht_cap = true;
-		pht_capie = (struct ieee80211_ht_cap *)(p + 2);
+		pht_capie = (struct rtl_ieee80211_ht_cap *)(p + 2);
 		memcpy(&mcs_rate, pht_capie->supp_mcs_set, 2);
 		bw_40MHz = (le16_to_cpu(pht_capie->cap_info) &
 			    IEEE80211_HT_CAP_SUP_WIDTH) ? 1 : 0;

drivers/staging/rtl8712/rtl871x_mlme.c

@@ -249,8 +249,8 @@ static int is_same_network(struct wlan_bssid_ex *src,
 			  src->Ssid.SsidLength))) &&
 			((s_cap & WLAN_CAPABILITY_IBSS) ==
 			(d_cap & WLAN_CAPABILITY_IBSS)) &&
-			((s_cap & WLAN_CAPABILITY_BSS) ==
-			(d_cap & WLAN_CAPABILITY_BSS));
+			((s_cap & WLAN_CAPABILITY_ESS) ==
+			(d_cap & WLAN_CAPABILITY_ESS));
 
 }
 
@@ -1643,7 +1643,7 @@ unsigned int r8712_restructure_ht_ie(struct _adapter *padapter, u8 *in_ie,
 {
 	u32 ielen, out_len;
 	unsigned char *p;
-	struct ieee80211_ht_cap ht_capie;
+	struct rtl_ieee80211_ht_cap ht_capie;
 	unsigned char WMM_IE[] = {0x00, 0x50, 0xf2, 0x02, 0x00, 0x01, 0x00};
 	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 	struct qos_priv *pqospriv = &pmlmepriv->qospriv;
@@ -1659,7 +1659,7 @@ unsigned int r8712_restructure_ht_ie(struct _adapter *padapter, u8 *in_ie,
 			pqospriv->qos_option = 1;
 		}
 		out_len = *pout_len;
-		memset(&ht_capie, 0, sizeof(struct ieee80211_ht_cap));
+		memset(&ht_capie, 0, sizeof(struct rtl_ieee80211_ht_cap));
 		ht_capie.cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH |
 				    IEEE80211_HT_CAP_SGI_20 |
 				    IEEE80211_HT_CAP_SGI_40 |
@@ -1669,7 +1669,7 @@ unsigned int r8712_restructure_ht_ie(struct _adapter *padapter, u8 *in_ie,
 		ht_capie.ampdu_params_info = (IEEE80211_HT_CAP_AMPDU_FACTOR &
 				0x03) | (IEEE80211_HT_CAP_AMPDU_DENSITY & 0x00);
 		r8712_set_ie(out_ie + out_len, _HT_CAPABILITY_IE_,
-			     sizeof(struct ieee80211_ht_cap),
+			     sizeof(struct rtl_ieee80211_ht_cap),
 			     (unsigned char *)&ht_capie, pout_len);
 		phtpriv->ht_option = 1;
 	}
@@ -1683,7 +1683,7 @@ static void update_ht_cap(struct _adapter *padapter, u8 *pie, uint ie_len)
 	int i;
 	uint len;
 	struct sta_info *bmc_sta, *psta;
-	struct ieee80211_ht_cap *pht_capie;
+	struct rtl_ieee80211_ht_cap *pht_capie;
 	struct recv_reorder_ctrl *preorder_ctrl;
 	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 	struct ht_priv *phtpriv = &pmlmepriv->htpriv;
@@ -1703,7 +1703,7 @@ static void update_ht_cap(struct _adapter *padapter, u8 *pie, uint ie_len)
 				&len, ie_len -
 				sizeof(struct NDIS_802_11_FIXED_IEs));
 	if (p && len > 0) {
-		pht_capie = (struct ieee80211_ht_cap *)(p + 2);
+		pht_capie = (struct rtl_ieee80211_ht_cap *)(p + 2);
 		max_ampdu_sz = (pht_capie->ampdu_params_info &
 				IEEE80211_HT_CAP_AMPDU_FACTOR);
 		/* max_ampdu_sz (kbytes); */

drivers/staging/rtl8712/rtl871x_recv.c

@@ -21,6 +21,7 @@
 #include <linux/if_ether.h>
 #include <linux/kmemleak.h>
 #include <linux/etherdevice.h>
+#include <net/cfg80211.h>
 
 #include "osdep_service.h"
 #include "drv_types.h"
@@ -35,12 +36,6 @@ static const u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
 /* Datagram Delivery Protocol */
 static const u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
 
-/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
-static const u8 bridge_tunnel_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8};
-
-/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
-static const u8 rfc1042_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
-
 void _r8712_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
 {
 	memset((u8 *)psta_recvpriv, 0, sizeof(struct sta_recv_priv));

drivers/staging/rtl8712/rtl871x_recv.h

@@ -12,8 +12,6 @@
 
 #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;

drivers/staging/rtl8712/rtl871x_xmit.c

@@ -476,7 +476,7 @@ static int make_wlanhdr(struct _adapter *padapter, u8 *hdr,
 	struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr;
 	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 	struct qos_priv *pqospriv = &pmlmepriv->qospriv;
-	__le16 *fctrl = &pwlanhdr->frame_ctl;
+	__le16 *fctrl = &pwlanhdr->frame_control;
 	u8 *bssid;
 
 	memset(hdr, 0, WLANHDR_OFFSET);

drivers/staging/rtl8712/wifi.h

@@ -451,33 +451,18 @@ static inline unsigned char *get_hdr_bssid(unsigned char *pframe)
 #define GetOrderBit(pbuf)	(((*(__le16 *)(pbuf)) & \
 				le16_to_cpu(_ORDER_)) != 0)
 
-/**
- * struct ieee80211_bar - HT Block Ack Request
- *
- * This structure refers to "HT BlockAckReq" as
- * described in 802.11n draft section 7.2.1.7.1
- */
-struct ieee80211_bar {
-	__le16 frame_control;
-	__le16 duration;
-	unsigned char ra[6];
-	unsigned char ta[6];
-	__le16 control;
-	__le16 start_seq_num;
-} __packed;
-
 /* 802.11 BAR control masks */
 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL     0x0000
 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA  0x0004
 
 /*
- * struct ieee80211_ht_cap - HT capabilities
+ * struct rtl_ieee80211_ht_cap - HT capabilities
  *
  * This structure refers to "HT capabilities element" as
  * described in 802.11n draft section 7.3.2.52
  */
 
-struct ieee80211_ht_cap {
+struct rtl_ieee80211_ht_cap {
 	__le16	cap_info;
 	unsigned char	ampdu_params_info;
 	unsigned char	supp_mcs_set[16];
@@ -487,7 +472,7 @@ struct ieee80211_ht_cap {
 } __packed;
 
 /**
- * struct ieee80211_ht_cap - HT additional information
+ * struct ieee80211_ht_addt_info - HT additional information
  *
  * This structure refers to "HT information element" as
  * described in 802.11n draft section 7.3.2.53