From c3bdb89e61084278a598d5af15da274cada1ecc6 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 4 Jul 2018 19:41:26 +0200 Subject: kernel: remove linux 4.4 support Signed-off-by: Felix Fietkau --- .../645-bridge_multicast_to_unicast.patch | 420 --------------------- 1 file changed, 420 deletions(-) delete mode 100644 target/linux/generic/pending-4.4/645-bridge_multicast_to_unicast.patch (limited to 'target/linux/generic/pending-4.4/645-bridge_multicast_to_unicast.patch') diff --git a/target/linux/generic/pending-4.4/645-bridge_multicast_to_unicast.patch b/target/linux/generic/pending-4.4/645-bridge_multicast_to_unicast.patch deleted file mode 100644 index f1c7ab1d9c..0000000000 --- a/target/linux/generic/pending-4.4/645-bridge_multicast_to_unicast.patch +++ /dev/null @@ -1,420 +0,0 @@ -From: Felix Fietkau -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) - - #define BR_DEFAULT_AGEING_TIME (300 * HZ) - ---- 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; - -@@ -652,7 +653,8 @@ 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; - -@@ -667,12 +669,33 @@ 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; -@@ -699,13 +722,13 @@ 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); -@@ -724,7 +747,7 @@ 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; - -@@ -735,14 +758,14 @@ 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; - -@@ -753,7 +776,7 @@ 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 - -@@ -1003,6 +1026,7 @@ 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; -@@ -1043,12 +1067,13 @@ 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; - } -@@ -1063,6 +1088,7 @@ 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; -@@ -1114,10 +1140,10 @@ 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; - } -@@ -1432,7 +1458,8 @@ 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; -@@ -1456,7 +1483,7 @@ 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); -@@ -1519,7 +1546,7 @@ 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) && -@@ -1537,8 +1564,8 @@ 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; -@@ -1553,14 +1580,14 @@ 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; -@@ -1575,7 +1602,7 @@ 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 - -@@ -1584,6 +1611,7 @@ 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; -@@ -1600,12 +1628,13 @@ 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); -@@ -1614,7 +1643,7 @@ 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; - } - -@@ -1630,6 +1659,7 @@ 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; -@@ -1649,8 +1679,9 @@ 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); -@@ -1659,7 +1690,8 @@ 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 -@@ -157,7 +157,9 @@ struct net_bridge_port_group { - struct rcu_head rcu; - struct timer_list timer; - struct br_ip addr; -+ unsigned char eth_addr[ETH_ALEN]; - unsigned char state; -+ bool unicast; - }; - - struct net_bridge_mdb_entry -@@ -555,7 +557,8 @@ 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 -@@ -192,6 +192,34 @@ 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, -@@ -264,6 +292,7 @@ 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; -@@ -274,10 +303,19 @@ 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, -- cgit v1.2.3