diff options
Diffstat (limited to 'net/ipv6/datagram.c')
| -rw-r--r-- | net/ipv6/datagram.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index 1ede7a16a0be..bde08aa549f3 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -772,6 +772,7 @@ int ip6_datagram_send_ctl(struct net *net, struct sock *sk, case IPV6_2292PKTINFO: { struct net_device *dev = NULL; + int src_idx; if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct in6_pktinfo))) { err = -EINVAL; @@ -779,12 +780,15 @@ int ip6_datagram_send_ctl(struct net *net, struct sock *sk, } src_info = (struct in6_pktinfo *)CMSG_DATA(cmsg); + src_idx = src_info->ipi6_ifindex; - if (src_info->ipi6_ifindex) { + if (src_idx) { if (fl6->flowi6_oif && - src_info->ipi6_ifindex != fl6->flowi6_oif) + src_idx != fl6->flowi6_oif && + (sk->sk_bound_dev_if != fl6->flowi6_oif || + !sk_dev_equal_l3scope(sk, src_idx))) return -EINVAL; - fl6->flowi6_oif = src_info->ipi6_ifindex; + fl6->flowi6_oif = src_idx; } addr_type = __ipv6_addr_type(&src_info->ipi6_addr); |