Commit 2a38e6d5 authored Nov 27, 2011 by Li Wei Committed by David S. Miller Nov 28, 2011

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 <lw@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 5cac98dd

net/ipv6/ipv6_sockglue.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -503,7 +503,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
		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;