kernel: remove linux 4.3 support

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48955

1 files changed, 0 insertions, 420 deletions

diff --git a/target/linux/generic/patches-4.3/645-bridge_multicast_to_unicast.patch b/target/linux/generic/patches-4.3/645-bridge_multicast_to_unicast.patch
deleted file mode 100644
index 0e360fc1cf..0000000000
--- a/target/linux/generic/patches-4.3/645-bridge_multicast_to_unicast.patch
+++ /dev/null
@@ -1,420 +0,0 @@
-From: Felix Fietkau <nbd@openwrt.org>
-Subject: [PATCH] bridge: multicast to unicast
-
-Implement optinal multicast->unicast conversion for igmp snooping
----
---- a/include/linux/if_bridge.h
-+++ b/include/linux/if_bridge.h
-@@ -46,6 +46,7 @@ struct br_ip_list {
- #define BR_LEARNING_SYNC	BIT(9)
- #define BR_PROXYARP_WIFI	BIT(10)
- #define BR_ISOLATE_MODE	BIT(11)
-+#define BR_MULTICAST_TO_UCAST	BIT(12)
- 
- extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
- 
---- a/net/bridge/br_multicast.c
-+++ b/net/bridge/br_multicast.c
-@@ -42,12 +42,13 @@ static void br_multicast_add_router(stru
- static void br_ip4_multicast_leave_group(struct net_bridge *br,
- 					 struct net_bridge_port *port,
- 					 __be32 group,
--					 __u16 vid);
-+					 __u16 vid,
-+					 const unsigned char *src);
- #if IS_ENABLED(CONFIG_IPV6)
- static void br_ip6_multicast_leave_group(struct net_bridge *br,
- 					 struct net_bridge_port *port,
- 					 const struct in6_addr *group,
--					 __u16 vid);
-+					 __u16 vid, const unsigned char *src);
- #endif
- unsigned int br_mdb_rehash_seq;
- 
-@@ -649,7 +650,8 @@ struct net_bridge_port_group *br_multica
- 			struct net_bridge_port *port,
- 			struct br_ip *group,
- 			struct net_bridge_port_group __rcu *next,
--			unsigned char state)
-+			unsigned char state,
-+			const unsigned char *src)
- {
- 	struct net_bridge_port_group *p;
- 
-@@ -664,12 +666,33 @@ struct net_bridge_port_group *br_multica
- 	hlist_add_head(&p->mglist, &port->mglist);
- 	setup_timer(&p->timer, br_multicast_port_group_expired,
- 		    (unsigned long)p);
-+	if ((port->flags & BR_MULTICAST_TO_UCAST) && src) {
-+		memcpy(p->eth_addr, src, ETH_ALEN);
-+		p->unicast = true;
-+	}
- 	return p;
- }
- 
-+static bool br_port_group_equal(struct net_bridge_port_group *p,
-+				struct net_bridge_port *port,
-+				const unsigned char *src)
-+{
-+	if (p->port != port)
-+		return false;
-+
-+	if (!p->unicast)
-+		return true;
-+
-+	if (!src)
-+		return false;
-+
-+	return ether_addr_equal(src, p->eth_addr);
-+}
-+
- static int br_multicast_add_group(struct net_bridge *br,
- 				  struct net_bridge_port *port,
--				  struct br_ip *group)
-+				  struct br_ip *group,
-+				  const unsigned char *src)
- {
- 	struct net_bridge_mdb_entry *mp;
- 	struct net_bridge_port_group *p;
-@@ -696,13 +719,13 @@ static int br_multicast_add_group(struct
- 	for (pp = &mp->ports;
- 	     (p = mlock_dereference(*pp, br)) != NULL;
- 	     pp = &p->next) {
--		if (p->port == port)
-+		if (br_port_group_equal(p, port, src))
- 			goto found;
- 		if ((unsigned long)p->port < (unsigned long)port)
- 			break;
- 	}
- 
--	p = br_multicast_new_port_group(port, group, *pp, MDB_TEMPORARY);
-+	p = br_multicast_new_port_group(port, group, *pp, MDB_TEMPORARY, src);
- 	if (unlikely(!p))
- 		goto err;
- 	rcu_assign_pointer(*pp, p);
-@@ -721,7 +744,7 @@ err:
- static int br_ip4_multicast_add_group(struct net_bridge *br,
- 				      struct net_bridge_port *port,
- 				      __be32 group,
--				      __u16 vid)
-+				      __u16 vid, const unsigned char *src)
- {
- 	struct br_ip br_group;
- 
-@@ -732,14 +755,14 @@ static int br_ip4_multicast_add_group(st
- 	br_group.proto = htons(ETH_P_IP);
- 	br_group.vid = vid;
- 
--	return br_multicast_add_group(br, port, &br_group);
-+	return br_multicast_add_group(br, port, &br_group, src);
- }
- 
- #if IS_ENABLED(CONFIG_IPV6)
- static int br_ip6_multicast_add_group(struct net_bridge *br,
- 				      struct net_bridge_port *port,
- 				      const struct in6_addr *group,
--				      __u16 vid)
-+				      __u16 vid, const unsigned char *src)
- {
- 	struct br_ip br_group;
- 
-@@ -750,7 +773,7 @@ static int br_ip6_multicast_add_group(st
- 	br_group.proto = htons(ETH_P_IPV6);
- 	br_group.vid = vid;
- 
--	return br_multicast_add_group(br, port, &br_group);
-+	return br_multicast_add_group(br, port, &br_group, src);
- }
- #endif
- 
-@@ -995,6 +1018,7 @@ static int br_ip4_multicast_igmp3_report
- 					 struct sk_buff *skb,
- 					 u16 vid)
- {
-+	const unsigned char *src;
- 	struct igmpv3_report *ih;
- 	struct igmpv3_grec *grec;
- 	int i;
-@@ -1035,12 +1059,13 @@ static int br_ip4_multicast_igmp3_report
- 			continue;
- 		}
- 
-+		src = eth_hdr(skb)->h_source;
- 		if ((type == IGMPV3_CHANGE_TO_INCLUDE ||
- 		     type == IGMPV3_MODE_IS_INCLUDE) &&
- 		    ntohs(grec->grec_nsrcs) == 0) {
--			br_ip4_multicast_leave_group(br, port, group, vid);
-+			br_ip4_multicast_leave_group(br, port, group, vid, src);
- 		} else {
--			err = br_ip4_multicast_add_group(br, port, group, vid);
-+			err = br_ip4_multicast_add_group(br, port, group, vid, src);
- 			if (err)
- 				break;
- 		}
-@@ -1055,6 +1080,7 @@ static int br_ip6_multicast_mld2_report(
- 					struct sk_buff *skb,
- 					u16 vid)
- {
-+	const unsigned char *src = eth_hdr(skb)->h_source;
- 	struct icmp6hdr *icmp6h;
- 	struct mld2_grec *grec;
- 	int i;
-@@ -1106,10 +1132,10 @@ static int br_ip6_multicast_mld2_report(
- 		     grec->grec_type == MLD2_MODE_IS_INCLUDE) &&
- 		    ntohs(*nsrcs) == 0) {
- 			br_ip6_multicast_leave_group(br, port, &grec->grec_mca,
--						     vid);
-+						     vid, src);
- 		} else {
- 			err = br_ip6_multicast_add_group(br, port,
--							 &grec->grec_mca, vid);
-+							 &grec->grec_mca, vid, src);
- 			if (!err)
- 				break;
- 		}
-@@ -1422,7 +1448,8 @@ br_multicast_leave_group(struct net_brid
- 			 struct net_bridge_port *port,
- 			 struct br_ip *group,
- 			 struct bridge_mcast_other_query *other_query,
--			 struct bridge_mcast_own_query *own_query)
-+			 struct bridge_mcast_own_query *own_query,
-+			 const unsigned char *src)
- {
- 	struct net_bridge_mdb_htable *mdb;
- 	struct net_bridge_mdb_entry *mp;
-@@ -1446,7 +1473,7 @@ br_multicast_leave_group(struct net_brid
- 		for (pp = &mp->ports;
- 		     (p = mlock_dereference(*pp, br)) != NULL;
- 		     pp = &p->next) {
--			if (p->port != port)
-+			if (!br_port_group_equal(p, port, src))
- 				continue;
- 
- 			rcu_assign_pointer(*pp, p->next);
-@@ -1509,7 +1536,7 @@ br_multicast_leave_group(struct net_brid
- 	for (p = mlock_dereference(mp->ports, br);
- 	     p != NULL;
- 	     p = mlock_dereference(p->next, br)) {
--		if (p->port != port)
-+		if (!br_port_group_equal(p, port, src))
- 			continue;
- 
- 		if (!hlist_unhashed(&p->mglist) &&
-@@ -1527,8 +1554,8 @@ out:
- 
- static void br_ip4_multicast_leave_group(struct net_bridge *br,
- 					 struct net_bridge_port *port,
--					 __be32 group,
--					 __u16 vid)
-+					 __be32 group, __u16 vid,
-+					 const unsigned char *src)
- {
- 	struct br_ip br_group;
- 	struct bridge_mcast_own_query *own_query;
-@@ -1543,14 +1570,14 @@ static void br_ip4_multicast_leave_group
- 	br_group.vid = vid;
- 
- 	br_multicast_leave_group(br, port, &br_group, &br->ip4_other_query,
--				 own_query);
-+				 own_query, src);
- }
- 
- #if IS_ENABLED(CONFIG_IPV6)
- static void br_ip6_multicast_leave_group(struct net_bridge *br,
- 					 struct net_bridge_port *port,
- 					 const struct in6_addr *group,
--					 __u16 vid)
-+					 __u16 vid, const unsigned char *src)
- {
- 	struct br_ip br_group;
- 	struct bridge_mcast_own_query *own_query;
-@@ -1565,7 +1592,7 @@ static void br_ip6_multicast_leave_group
- 	br_group.vid = vid;
- 
- 	br_multicast_leave_group(br, port, &br_group, &br->ip6_other_query,
--				 own_query);
-+				 own_query, src);
- }
- #endif
- 
-@@ -1574,6 +1601,7 @@ static int br_multicast_ipv4_rcv(struct
- 				 struct sk_buff *skb,
- 				 u16 vid)
- {
-+	const unsigned char *src;
- 	struct sk_buff *skb_trimmed = NULL;
- 	struct igmphdr *ih;
- 	int err;
-@@ -1590,12 +1618,13 @@ static int br_multicast_ipv4_rcv(struct
- 
- 	BR_INPUT_SKB_CB(skb)->igmp = 1;
- 	ih = igmp_hdr(skb);
-+	src = eth_hdr(skb)->h_source;
- 
- 	switch (ih->type) {
- 	case IGMP_HOST_MEMBERSHIP_REPORT:
- 	case IGMPV2_HOST_MEMBERSHIP_REPORT:
- 		BR_INPUT_SKB_CB(skb)->mrouters_only = 1;
--		err = br_ip4_multicast_add_group(br, port, ih->group, vid);
-+		err = br_ip4_multicast_add_group(br, port, ih->group, vid, src);
- 		break;
- 	case IGMPV3_HOST_MEMBERSHIP_REPORT:
- 		err = br_ip4_multicast_igmp3_report(br, port, skb_trimmed, vid);
-@@ -1604,7 +1633,7 @@ static int br_multicast_ipv4_rcv(struct
- 		err = br_ip4_multicast_query(br, port, skb_trimmed, vid);
- 		break;
- 	case IGMP_HOST_LEAVE_MESSAGE:
--		br_ip4_multicast_leave_group(br, port, ih->group, vid);
-+		br_ip4_multicast_leave_group(br, port, ih->group, vid, src);
- 		break;
- 	}
- 
-@@ -1620,6 +1649,7 @@ static int br_multicast_ipv6_rcv(struct
- 				 struct sk_buff *skb,
- 				 u16 vid)
- {
-+	const unsigned char *src;
- 	struct sk_buff *skb_trimmed = NULL;
- 	struct mld_msg *mld;
- 	int err;
-@@ -1639,8 +1669,9 @@ static int br_multicast_ipv6_rcv(struct
- 
- 	switch (mld->mld_type) {
- 	case ICMPV6_MGM_REPORT:
-+		src = eth_hdr(skb)->h_source;
- 		BR_INPUT_SKB_CB(skb)->mrouters_only = 1;
--		err = br_ip6_multicast_add_group(br, port, &mld->mld_mca, vid);
-+		err = br_ip6_multicast_add_group(br, port, &mld->mld_mca, vid, src);
- 		break;
- 	case ICMPV6_MLD2_REPORT:
- 		err = br_ip6_multicast_mld2_report(br, port, skb_trimmed, vid);
-@@ -1649,7 +1680,8 @@ static int br_multicast_ipv6_rcv(struct
- 		err = br_ip6_multicast_query(br, port, skb_trimmed, vid);
- 		break;
- 	case ICMPV6_MGM_REDUCTION:
--		br_ip6_multicast_leave_group(br, port, &mld->mld_mca, vid);
-+		src = eth_hdr(skb)->h_source;
-+		br_ip6_multicast_leave_group(br, port, &mld->mld_mca, vid, src);
- 		break;
- 	}
- 
---- a/net/bridge/br_private.h
-+++ b/net/bridge/br_private.h
-@@ -114,6 +114,9 @@ struct net_bridge_port_group {
- 	struct timer_list		timer;
- 	struct br_ip			addr;
- 	unsigned char			state;
-+
-+	unsigned char			eth_addr[ETH_ALEN];
-+	bool				unicast;
- };
- 
- struct net_bridge_mdb_entry
-@@ -485,7 +488,8 @@ void br_multicast_free_pg(struct rcu_hea
- struct net_bridge_port_group *
- br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
- 			    struct net_bridge_port_group __rcu *next,
--			    unsigned char state);
-+			    unsigned char state,
-+		       const unsigned char *src);
- void br_mdb_init(void);
- void br_mdb_uninit(void);
- void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
---- a/net/bridge/br_mdb.c
-+++ b/net/bridge/br_mdb.c
-@@ -416,7 +416,7 @@ static int br_mdb_add_group(struct net_b
- 			break;
- 	}
- 
--	p = br_multicast_new_port_group(port, group, *pp, state);
-+	p = br_multicast_new_port_group(port, group, *pp, state, NULL);
- 	if (unlikely(!p))
- 		return -ENOMEM;
- 	rcu_assign_pointer(*pp, p);
---- a/net/bridge/br_forward.c
-+++ b/net/bridge/br_forward.c
-@@ -185,6 +185,34 @@ out:
- 	return p;
- }
- 
-+static struct net_bridge_port *maybe_deliver_addr(
-+	struct net_bridge_port *prev, struct net_bridge_port *p,
-+	struct sk_buff *skb, const unsigned char *addr,
-+	void (*__packet_hook)(const struct net_bridge_port *p,
-+			      struct sk_buff *skb))
-+{
-+	struct net_device *dev = BR_INPUT_SKB_CB(skb)->brdev;
-+	const unsigned char *src = eth_hdr(skb)->h_source;
-+
-+	if (!should_deliver(p, skb))
-+		return prev;
-+
-+	/* Even with hairpin, no soliloquies - prevent breaking IPv6 DAD */
-+	if (skb->dev == p->dev && ether_addr_equal(src, addr))
-+		return prev;
-+
-+	skb = skb_copy(skb, GFP_ATOMIC);
-+	if (!skb) {
-+		dev->stats.tx_dropped++;
-+		return prev;
-+	}
-+
-+	memcpy(eth_hdr(skb)->h_dest, addr, ETH_ALEN);
-+	__packet_hook(p, skb);
-+
-+	return prev;
-+}
-+
- /* called under bridge lock */
- static void br_flood(struct net_bridge *br, struct sk_buff *skb,
- 		     struct sk_buff *skb0,
-@@ -257,6 +285,7 @@ static void br_multicast_flood(struct ne
- 	struct net_bridge_port *prev = NULL;
- 	struct net_bridge_port_group *p;
- 	struct hlist_node *rp;
-+	const unsigned char *addr;
- 
- 	rp = rcu_dereference(hlist_first_rcu(&br->router_list));
- 	p = mdst ? rcu_dereference(mdst->ports) : NULL;
-@@ -267,10 +296,19 @@ static void br_multicast_flood(struct ne
- 		rport = rp ? hlist_entry(rp, struct net_bridge_port, rlist) :
- 			     NULL;
- 
--		port = (unsigned long)lport > (unsigned long)rport ?
--		       lport : rport;
--
--		prev = maybe_deliver(prev, port, skb, __packet_hook);
-+		if ((unsigned long)lport > (unsigned long)rport) {
-+			port = lport;
-+			addr = p->unicast ? p->eth_addr : NULL;
-+		} else {
-+			port = rport;
-+			addr = NULL;
-+		}
-+
-+		if (addr)
-+			prev = maybe_deliver_addr(prev, port, skb, addr,
-+						  __packet_hook);
-+		else
-+			prev = maybe_deliver(prev, port, skb, __packet_hook);
- 		if (IS_ERR(prev))
- 			goto out;
- 
---- a/net/bridge/br_sysfs_if.c
-+++ b/net/bridge/br_sysfs_if.c
-@@ -204,6 +204,7 @@ static BRPORT_ATTR(multicast_router, S_I
- 		   store_multicast_router);
- 
- BRPORT_ATTR_FLAG(multicast_fast_leave, BR_MULTICAST_FAST_LEAVE);
-+BRPORT_ATTR_FLAG(multicast_to_unicast, BR_MULTICAST_TO_UCAST);
- #endif
- 
- static const struct brport_attribute *brport_attrs[] = {
-@@ -230,6 +231,7 @@ static const struct brport_attribute *br
- #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
- 	&brport_attr_multicast_router,
- 	&brport_attr_multicast_fast_leave,
-+	&brport_attr_multicast_to_unicast,
- #endif
- 	&brport_attr_proxyarp,
- 	&brport_attr_proxyarp_wifi,