#include <linux/version.h> /* LINUX_VERSION_CODE */
#include <linux/types.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+#if LINUX_VERSION_IS_LESS(5, 10, 0)
-#include <linux/netdevice.h>
+#include <linux/if_bridge.h>
-#define netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info, extack) ({\
- BUILD_BUG_ON(extack != NULL); \
- netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info); \
-})
-
-#endif /* < KERNEL_VERSION(4, 15, 0) */
-
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 0)
-
-#include_next <linux/igmp.h>
-#include_next <net/addrconf.h>
-
-static inline int batadv_ipv6_mc_check_mld1(struct sk_buff *skb)
+struct batadv_br_ip {
+ union {
+ __be32 ip4;
+#if IS_ENABLED(CONFIG_IPV6)
+ struct in6_addr ip6;
+#endif
+ } dst;
+ __be16 proto;
+ __u16 vid;
+};
+
+struct batadv_br_ip_list {
+ struct list_head list;
+ struct batadv_br_ip addr;
+};
+
+#if 0
+/* "static" dropped to force compiler to evaluate it as part of multicast.c
+ * might need to be added again and then called in some kind of dummy
+ * compat.c in case this header is included in multiple files.
+ */
+inline void __batadv_br_ip_list_check(void)
{
- return ipv6_mc_check_mld(skb, NULL);
+ BUILD_BUG_ON(sizeof(struct batadv_br_ip_list) != sizeof(struct br_ip_list));
+ BUILD_BUG_ON(offsetof(struct batadv_br_ip_list, list) != offsetof(struct br_ip_list, list));
+ BUILD_BUG_ON(offsetof(struct batadv_br_ip_list, addr) != offsetof(struct br_ip_list, addr));
+
+ BUILD_BUG_ON(sizeof(struct batadv_br_ip) != sizeof(struct br_ip));
+ BUILD_BUG_ON(offsetof(struct batadv_br_ip, dst.ip4) != offsetof(struct br_ip, u.ip4));
+ BUILD_BUG_ON(offsetof(struct batadv_br_ip, dst.ip6) != offsetof(struct br_ip, u.ip6));
+ BUILD_BUG_ON(offsetof(struct batadv_br_ip, proto) != offsetof(struct br_ip, proto));
+ BUILD_BUG_ON(offsetof(struct batadv_br_ip, vid) != offsetof(struct br_ip, vid));
}
+#endif
-static inline int batadv_ipv6_mc_check_mld2(struct sk_buff *skb,
- struct sk_buff **skb_trimmed)
-{
- return ipv6_mc_check_mld(skb, skb_trimmed);
-}
+#define br_ip batadv_br_ip
+#define br_ip_list batadv_br_ip_list
-#define ipv6_mc_check_mld_get(_1, _2, ipv6_mc_check_mld_name, ...) ipv6_mc_check_mld_name
-#define ipv6_mc_check_mld(...) \
- ipv6_mc_check_mld_get(__VA_ARGS__, batadv_ipv6_mc_check_mld2, batadv_ipv6_mc_check_mld1)(__VA_ARGS__)
+#endif /* LINUX_VERSION_IS_LESS(5, 10, 0) */
-static inline int batadv_ip_mc_check_igmp1(struct sk_buff *skb)
-{
- return ip_mc_check_igmp(skb, NULL);
-}
+#if LINUX_VERSION_IS_LESS(5, 14, 0)
+
+#include <linux/if_bridge.h>
+#include <net/addrconf.h>
-static inline int batadv_ip_mc_check_igmp2(struct sk_buff *skb,
- struct sk_buff **skb_trimmed)
+#if IS_ENABLED(CONFIG_IPV6)
+static inline bool
+br_multicast_has_router_adjacent(struct net_device *dev, int proto)
{
- return ip_mc_check_igmp(skb, skb_trimmed);
-}
+ struct list_head bridge_mcast_list = LIST_HEAD_INIT(bridge_mcast_list);
+ struct br_ip_list *br_ip_entry, *tmp;
+ int ret;
-#define ip_mc_check_igmp_get(_1, _2, ip_mc_check_igmp_name, ...) ip_mc_check_igmp_name
-#define ip_mc_check_igmp(...) \
- ip_mc_check_igmp_get(__VA_ARGS__, batadv_ip_mc_check_igmp2, batadv_ip_mc_check_igmp1)(__VA_ARGS__)
+ if (proto != ETH_P_IPV6)
+ return true;
-#endif /* < KERNEL_VERSION(5, 1, 0) */
+ ret = br_multicast_list_adjacent(dev, &bridge_mcast_list);
+ if (ret < 0)
+ return true;
+ ret = false;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
+ list_for_each_entry_safe(br_ip_entry, tmp, &bridge_mcast_list, list) {
+ if (br_ip_entry->addr.proto == htons(ETH_P_IPV6) &&
+ ipv6_addr_is_ll_all_routers(&br_ip_entry->addr.dst.ip6))
+ ret = true;
-#include_next <linux/cache.h>
+ list_del(&br_ip_entry->list);
+ kfree(br_ip_entry);
+ }
-/* hack for netlink.c which marked the family ops as ro */
-#ifdef __ro_after_init
-#undef __ro_after_init
+ return ret;
+}
+#else
+static inline bool
+br_multicast_has_router_adjacent(struct net_device *dev, int proto)
+{
+ return true;
+}
#endif
-#define __ro_after_init
-
-#endif /* < KERNEL_VERSION(4, 10, 0) */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 9)
+#endif /* LINUX_VERSION_IS_LESS(5, 14, 0) */
-#include <linux/netdevice.h>
+#if LINUX_VERSION_IS_LESS(5, 15, 0)
-/* work around missing attribute needs_free_netdev and priv_destructor in
- * net_device
- */
-#define ether_setup(dev) \
- void batadv_softif_free2(struct net_device *dev) \
- { \
- batadv_softif_free(dev); \
- free_netdev(dev); \
- } \
- void (*t1)(struct net_device *dev) __attribute__((unused)); \
- bool t2 __attribute__((unused)); \
- ether_setup(dev)
-#define needs_free_netdev destructor = batadv_softif_free2; t2
-#define priv_destructor destructor = batadv_softif_free2; t1
-
-#endif /* < KERNEL_VERSION(4, 11, 9) */
-
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
-
-#define batadv_softif_slave_add(__dev, __slave_dev, __extack) \
- batadv_softif_slave_add(__dev, __slave_dev)
+static inline void batadv_dev_put(struct net_device *dev)
+{
+ if (!dev)
+ return;
-#endif /* < KERNEL_VERSION(4, 15, 0) */
+ dev_put(dev);
+}
+#define dev_put batadv_dev_put
+static inline void batadv_dev_hold(struct net_device *dev)
+{
+ if (!dev)
+ return;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 0, 0)
+ dev_hold(dev);
+}
+#define dev_hold batadv_dev_hold
-static inline int batadv_access_ok(int type, const void __user *p,
- unsigned long size)
+static inline void batadv_eth_hw_addr_set(struct net_device *dev,
+ const u8 *addr)
{
- return access_ok(type, p, size);
+ ether_addr_copy(dev->dev_addr, addr);
}
+#define eth_hw_addr_set batadv_eth_hw_addr_set
-#ifdef access_ok
-#undef access_ok
-#endif
-
-#define access_ok_get(_1, _2, _3 , access_ok_name, ...) access_ok_name
-#define access_ok(...) \
- access_ok_get(__VA_ARGS__, access_ok3, access_ok2)(__VA_ARGS__)
-
-#define access_ok2(addr, size) batadv_access_ok(VERIFY_WRITE, (addr), (size))
-#define access_ok3(type, addr, size) batadv_access_ok((type), (addr), (size))
-
-#endif /* < KERNEL_VERSION(5, 0, 0) */
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
-
-#ifndef fallthrough
-#if __GNUC__ > 7 && !defined(__CHECKER__)
-# define fallthrough __attribute__((__fallthrough__))
-#else
-# define fallthrough do {} while (0) /* fallthrough */
-#endif
-#endif
-
-#endif /* < KERNEL_VERSION(5, 4, 0) */
+#endif /* LINUX_VERSION_IS_LESS(5, 15, 0) */
/* <DECLARE_EWMA> */
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