Commit 2563fa59 authored by Maciej Żenczykowski's avatar Maciej Żenczykowski Committed by David S. Miller
Browse files

net: make ipv6 PKTINFO honour freebind 



This just makes it possible to spoof source IPv6 address on a socket
without having to create and bind a new socket for every source IP
we wish to spoof.

Signed-off-by: default avatarMaciej Żenczykowski <maze@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f74024d9

net/ipv6/datagram.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -654,7 +654,7 @@ int datagram_send_ctl(struct net *net, struct sock *sk, 




			if (addr_type != IPV6_ADDR_ANY) {

			if (addr_type != IPV6_ADDR_ANY) {

				int strict = __ipv6_addr_src_scope(addr_type) <= IPV6_ADDR_SCOPE_LINKLOCAL;

				int strict = __ipv6_addr_src_scope(addr_type) <= IPV6_ADDR_SCOPE_LINKLOCAL;

				if (!inet_sk(sk)->transparent &&

				if (!(inet_sk(sk)->freebind || inet_sk(sk)->transparent) &&

				    !ipv6_chk_addr(net, &src_info->ipi6_addr,

				    !ipv6_chk_addr(net, &src_info->ipi6_addr,

						   strict ? dev : NULL, 0))

						   strict ? dev : NULL, 0))

					err = -EINVAL;

					err = -EINVAL;