kernel: disable multicast-to-unicast translation for ipv6 neighbor solicitation ...

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Backport of r43736

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@43737 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/generic/patches-3.10/645-bridge_multicast_to_unicast.patch b/target/linux/generic/patches-3.10/645-bridge_multicast_to_unicast.patch
index 9ee6b01..283157a 100644 (file)
--- a/target/linux/generic/patches-3.10/645-bridge_multicast_to_unicast.patch
+++ b/target/linux/generic/patches-3.10/645-bridge_multicast_to_unicast.patch
@@ -87,16 +87,19 @@
  {
        struct br_ip br_group;
  
-@@ -735,7 +757,7 @@ static int br_ip6_multicast_add_group(st
+@@ -735,7 +757,10 @@ 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);
++      if (ipv6_addr_is_solict_mult(group))
++              src = NULL;
++
 +      return br_multicast_add_group(br, port, &br_group, src);
  }
  #endif
  
-@@ -949,6 +971,7 @@ static int br_ip4_multicast_igmp3_report
+@@ -949,6 +974,7 @@ static int br_ip4_multicast_igmp3_report
                                         struct net_bridge_port *port,
                                         struct sk_buff *skb)
  {
@@ -104,7 +107,7 @@
        struct igmpv3_report *ih;
        struct igmpv3_grec *grec;
        int i;
-@@ -994,7 +1017,7 @@ static int br_ip4_multicast_igmp3_report
+@@ -994,7 +1020,7 @@ static int br_ip4_multicast_igmp3_report
                        continue;
                }
  
@@ -113,7 +116,7 @@
                if (err)
                        break;
        }
-@@ -1007,6 +1030,7 @@ static int br_ip6_multicast_mld2_report(
+@@ -1007,6 +1033,7 @@ static int br_ip6_multicast_mld2_report(
                                        struct net_bridge_port *port,
                                        struct sk_buff *skb)
  {
@@ -121,7 +124,7 @@
        struct icmp6hdr *icmp6h;
        struct mld2_grec *grec;
        int i;
-@@ -1057,7 +1081,7 @@ static int br_ip6_multicast_mld2_report(
+@@ -1057,7 +1084,7 @@ static int br_ip6_multicast_mld2_report(
                }
  
                err = br_ip6_multicast_add_group(br, port, &grec->grec_mca,
@@ -130,7 +133,7 @@
                if (!err)
                        break;
        }
-@@ -1302,7 +1326,8 @@ static void br_multicast_leave_group(str
+@@ -1302,7 +1329,8 @@ static void br_multicast_leave_group(str
                                     struct net_bridge_port *port,
                                     struct br_ip *group,
                                     struct bridge_mcast_querier *querier,
@@ -140,7 +143,7 @@
  {
        struct net_bridge_mdb_htable *mdb;
        struct net_bridge_mdb_entry *mp;
-@@ -1352,7 +1377,7 @@ static void br_multicast_leave_group(str
+@@ -1352,7 +1380,7 @@ static void br_multicast_leave_group(str
                for (pp = &mp->ports;
                     (p = mlock_dereference(*pp, br)) != NULL;
                     pp = &p->next) {
@@ -149,7 +152,7 @@
                                continue;
  
                        rcu_assign_pointer(*pp, p->next);
-@@ -1386,7 +1411,7 @@ static void br_multicast_leave_group(str
+@@ -1386,7 +1414,7 @@ static void br_multicast_leave_group(str
        for (p = mlock_dereference(mp->ports, br);
             p != NULL;
             p = mlock_dereference(p->next, br)) {
@@ -158,7 +161,7 @@
                        continue;
  
                if (!hlist_unhashed(&p->mglist) &&
-@@ -1404,8 +1429,8 @@ out:
+@@ -1404,8 +1432,8 @@ out:
  
  static void br_ip4_multicast_leave_group(struct net_bridge *br,
                                         struct net_bridge_port *port,
@@ -169,7 +172,7 @@
  {
        struct br_ip br_group;
        struct bridge_mcast_query *query = port ? &port->ip4_query :
-@@ -1418,14 +1443,15 @@ static void br_ip4_multicast_leave_group
+@@ -1418,14 +1446,15 @@ static void br_ip4_multicast_leave_group
        br_group.proto = htons(ETH_P_IP);
        br_group.vid = vid;
  
@@ -187,7 +190,7 @@
  {
        struct br_ip br_group;
        struct bridge_mcast_query *query = port ? &port->ip6_query :
-@@ -1439,7 +1465,8 @@ static void br_ip6_multicast_leave_group
+@@ -1439,7 +1468,8 @@ static void br_ip6_multicast_leave_group
        br_group.proto = htons(ETH_P_IPV6);
        br_group.vid = vid;
  
@@ -197,7 +200,7 @@
  }
  #endif
  
-@@ -1447,6 +1474,7 @@ static int br_multicast_ipv4_rcv(struct 
+@@ -1447,6 +1477,7 @@ static int br_multicast_ipv4_rcv(struct 
                                 struct net_bridge_port *port,
                                 struct sk_buff *skb)
  {
@@ -205,7 +208,7 @@
        struct sk_buff *skb2 = skb;
        const struct iphdr *iph;
        struct igmphdr *ih;
-@@ -1522,7 +1550,7 @@ static int br_multicast_ipv4_rcv(struct 
+@@ -1522,7 +1553,7 @@ static int br_multicast_ipv4_rcv(struct 
        case IGMP_HOST_MEMBERSHIP_REPORT:
        case IGMPV2_HOST_MEMBERSHIP_REPORT:
                BR_INPUT_SKB_CB(skb)->mrouters_only = 1;
@@ -214,7 +217,7 @@
                break;
        case IGMPV3_HOST_MEMBERSHIP_REPORT:
                err = br_ip4_multicast_igmp3_report(br, port, skb2);
-@@ -1531,7 +1559,7 @@ static int br_multicast_ipv4_rcv(struct 
+@@ -1531,7 +1562,7 @@ static int br_multicast_ipv4_rcv(struct 
                err = br_ip4_multicast_query(br, port, skb2);
                break;
        case IGMP_HOST_LEAVE_MESSAGE:
@@ -223,7 +226,7 @@
                break;
        }
  
-@@ -1548,6 +1576,7 @@ static int br_multicast_ipv6_rcv(struct 
+@@ -1548,6 +1579,7 @@ static int br_multicast_ipv6_rcv(struct 
                                 struct net_bridge_port *port,
                                 struct sk_buff *skb)
  {
@@ -231,7 +234,7 @@
        struct sk_buff *skb2;
        const struct ipv6hdr *ip6h;
        u8 icmp6_type;
-@@ -1659,7 +1688,8 @@ static int br_multicast_ipv6_rcv(struct 
+@@ -1659,7 +1691,8 @@ static int br_multicast_ipv6_rcv(struct 
                }
                mld = (struct mld_msg *)skb_transport_header(skb2);
                BR_INPUT_SKB_CB(skb)->mrouters_only = 1;
@@ -241,7 +244,7 @@
                break;
            }
        case ICMPV6_MLD2_REPORT:
-@@ -1676,7 +1706,7 @@ static int br_multicast_ipv6_rcv(struct 
+@@ -1676,7 +1709,7 @@ static int br_multicast_ipv6_rcv(struct 
                        goto out;
                }
                mld = (struct mld_msg *)skb_transport_header(skb2);