| From foo@baz Sat Sep 26 11:20:32 PDT 2015 |
| From: Angga <Hermin.Anggawijaya@alliedtelesis.co.nz> |
| Date: Fri, 3 Jul 2015 14:40:52 +1200 |
| Subject: ipv6: Make MLD packets to only be processed locally |
| |
| From: Angga <Hermin.Anggawijaya@alliedtelesis.co.nz> |
| |
| [ Upstream commit 4c938d22c88a9ddccc8c55a85e0430e9c62b1ac5 ] |
| |
| Before commit daad151263cf ("ipv6: Make ipv6_is_mld() inline and use it |
| from ip6_mc_input().") MLD packets were only processed locally. After the |
| change, a copy of MLD packet goes through ip6_mr_input, causing |
| MRT6MSG_NOCACHE message to be generated to user space. |
| |
| Make MLD packet only processed locally. |
| |
| Fixes: daad151263cf ("ipv6: Make ipv6_is_mld() inline and use it from ip6_mc_input().") |
| Signed-off-by: Hermin Anggawijaya <hermin.anggawijaya@alliedtelesis.co.nz> |
| Signed-off-by: David S. Miller <davem@davemloft.net> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| net/ipv6/ip6_input.c | 6 +++--- |
| 1 file changed, 3 insertions(+), 3 deletions(-) |
| |
| --- a/net/ipv6/ip6_input.c |
| +++ b/net/ipv6/ip6_input.c |
| @@ -325,10 +325,10 @@ int ip6_mc_input(struct sk_buff *skb) |
| if (offset < 0) |
| goto out; |
| |
| - if (!ipv6_is_mld(skb, nexthdr, offset)) |
| - goto out; |
| + if (ipv6_is_mld(skb, nexthdr, offset)) |
| + deliver = true; |
| |
| - deliver = true; |
| + goto out; |
| } |
| /* unknown RA - process it normally */ |
| } |
