Make Linux 5.19/6.0/6.1 support backwards compatible

include/ieee80211.h

@@ -1529,17 +1529,26 @@ enum ieee80211_state {
 	(((Addr[2]) & 0xff) == 0xff) && (((Addr[3]) & 0xff) == 0xff) && (((Addr[4]) & 0xff) == 0xff) && \
 				     (((Addr[5]) & 0xff) == 0xff))
 #else
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 19, 0))
+extern
+#endif
 __inline int is_multicast_mac_addr(const u8 *addr)
 {
 	return (addr[0] != 0xff) && (0x01 & addr[0]);
 }
 
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 19, 0))
+extern
+#endif
 __inline int is_broadcast_mac_addr(const u8 *addr)
 {
 	return ((addr[0] == 0xff) && (addr[1] == 0xff) && (addr[2] == 0xff) &&   \
 		(addr[3] == 0xff) && (addr[4] == 0xff) && (addr[5] == 0xff));
 }
 
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 19, 0))
+extern
+#endif
 __inline int is_zero_mac_addr(const u8 *addr)
 {
 	return ((addr[0] == 0x00) && (addr[1] == 0x00) && (addr[2] == 0x00) &&   \

os_dep/linux/ioctl_cfg80211.c

@@ -417,7 +417,11 @@ u8 rtw_cfg80211_ch_switch_notify(_adapter *adapter, u8 ch, u8 bw, u8 offset, u8
 	if (ret != _SUCCESS)
 		goto exit;
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 0, 0))
 	cfg80211_ch_switch_notify(adapter->pnetdev, &chdef, 0);
+#else
+	cfg80211_ch_switch_notify(adapter->pnetdev, &chdef);
+#endif
 
 #else
 	int freq = rtw_ch2freq(ch);
@@ -1085,7 +1089,9 @@ check_bss:
 		#endif
 
 		#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+		#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 0, 0)
 		roam_info.links[0].bssid = cur_network->network.MacAddress;
+		#endif /*LINUX_VERSION_CODE >= KERNEL_VERSION(6, 0, 0)*/
 		roam_info.req_ie = pmlmepriv->assoc_req + sizeof(struct rtw_ieee80211_hdr_3addr) + 2;
 		roam_info.req_ie_len = pmlmepriv->assoc_req_len - sizeof(struct rtw_ieee80211_hdr_3addr) - 2;
 		roam_info.resp_ie = pmlmepriv->assoc_rsp + sizeof(struct rtw_ieee80211_hdr_3addr) + 6;
@@ -1635,8 +1641,11 @@ exit:
 	return ret;
 }
 
-static int cfg80211_rtw_add_key(struct wiphy *wiphy, struct net_device *ndev,
- int link_id, u8 key_index
+static int cfg80211_rtw_add_key(struct wiphy *wiphy, struct net_device *ndev
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0))
+        , int link_id
+#endif
+	, u8 key_index
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37)) || defined(COMPAT_KERNEL_RELEASE)
 	, bool pairwise
 #endif
@@ -1779,8 +1788,11 @@ addkey_end:
 
 }
 
-static int cfg80211_rtw_get_key(struct wiphy *wiphy, struct net_device *ndev,
- int link_id, u8 keyid
+static int cfg80211_rtw_get_key(struct wiphy *wiphy, struct net_device *ndev
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0))
+        , int link_id
+#endif
+	, u8 keyid
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37)) || defined(COMPAT_KERNEL_RELEASE)
 	, bool pairwise
 #endif
@@ -1944,7 +1956,10 @@ exit:
 	return ret;
 }
 
-static int cfg80211_rtw_del_key(struct wiphy *wiphy, struct net_device *ndev, int link_id,
+static int cfg80211_rtw_del_key(struct wiphy *wiphy, struct net_device *ndev,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0))
+		                int link_id,
+#endif
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37)) || defined(COMPAT_KERNEL_RELEASE)
 				u8 key_index, bool pairwise, const u8 *mac_addr)
 #else	/* (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37)) */
@@ -1965,7 +1980,11 @@ static int cfg80211_rtw_del_key(struct wiphy *wiphy, struct net_device *ndev, in
 }
 
 static int cfg80211_rtw_set_default_key(struct wiphy *wiphy,
-	struct net_device *ndev, int link_id, u8 key_index
+	struct net_device *ndev
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0))
+	, int link_id
+#endif
+	, u8 key_index
 	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 38)) || defined(COMPAT_KERNEL_RELEASE)
 	, bool unicast, bool multicast
 	#endif
@@ -2013,7 +2032,11 @@ static int cfg80211_rtw_set_default_key(struct wiphy *wiphy,
 
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 30))
 int cfg80211_rtw_set_default_mgmt_key(struct wiphy *wiphy,
-	struct net_device *ndev, int link_id,  u8 key_index)
+	struct net_device *ndev
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0))
+	, int link_id
+#endif
+	, u8 key_index)
 {
 #define SET_DEF_KEY_PARAM_FMT " key_index=%d"
 #define SET_DEF_KEY_PARAM_ARG , key_index
@@ -4929,7 +4952,11 @@ static int cfg80211_rtw_change_beacon(struct wiphy *wiphy, struct net_device *nd
 	return ret;
 }
 
-static int cfg80211_rtw_stop_ap(struct wiphy *wiphy, struct net_device *ndev, unsigned int link_id)
+static int cfg80211_rtw_stop_ap(struct wiphy *wiphy, struct net_device *ndev
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 0, 0))
+		, unsigned int link_id
+#endif
+	)
 {
 	_adapter *adapter = (_adapter *)rtw_netdev_priv(ndev);
 

os_dep/linux/os_intfs.c

@@ -1643,7 +1643,11 @@ int rtw_os_ndev_register(_adapter *adapter, const char *name)
 	u8 rtnl_lock_needed = rtw_rtnl_lock_needed(dvobj);
 
 #ifdef CONFIG_RTW_NAPI
-	netif_napi_add(ndev, &adapter->napi, rtw_recv_napi_poll);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0))
+	netif_napi_add_weight(ndev, &adapter->napi, rtw_recv_napi_poll, RTL_NAPI_WEIGHT);
+#else
+	netif_napi_add(ndev, &adapter->napi, rtw_recv_napi_poll, RTL_NAPI_WEIGHT);
+#endif
 #endif /* CONFIG_RTW_NAPI */
 
 #if defined(CONFIG_IOCTL_CFG80211)

os_dep/osdep_service.c

@@ -2614,15 +2614,17 @@ u64 rtw_division64(u64 x, u64 y)
 inline u32 rtw_random32(void)
 {
 #ifdef PLATFORM_LINUX
-// #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 8, 0))
-// 	return prandom_u32();
-// #elif (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18))
-// 	u32 random_int;
-// 	get_random_bytes(&random_int , 4);
-// 	return random_int;
-// #else
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0))
 	return get_random_u32();
-// #endif
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 8, 0))
+	return prandom_u32();
+#elif (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18))
+	u32 random_int;
+	get_random_bytes(&random_int , 4);
+	return random_int;
+#else
+	return random32();
+#endif
 #elif defined(PLATFORM_WINDOWS)
 #error "to be implemented\n"
 #elif defined(PLATFORM_FREEBSD)