From: Li Wei Date: Sun, 27 Nov 2011 21:33:34 +0000 (+0000) Subject: ipv6: Set mcast_hops to IPV6_DEFAULT_MCASTHOPS when -1 was given. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2a38e6d5aed24bb7f0211e0819fac8c32c2b5791;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git ipv6: Set mcast_hops to IPV6_DEFAULT_MCASTHOPS when -1 was given. We need to set np->mcast_hops to it's default value at this moment otherwise when we use it and found it's value is -1, the logic to get default hop limit doesn't take multicast into account and will return wrong hop limit(IPV6_DEFAULT_HOPLIMIT) which is for unicast. Signed-off-by: Li Wei Signed-off-by: David S. Miller --- diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index c99e3ee9781f..26cb08c84b74 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -503,7 +503,7 @@ done: goto e_inval; if (val > 255 || val < -1) goto e_inval; - np->mcast_hops = val; + np->mcast_hops = (val == -1 ? IPV6_DEFAULT_MCASTHOPS : val); retv = 0; break;