diff options
Diffstat (limited to 'net/ipv4/raw.c')
| -rw-r--r-- | net/ipv4/raw.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c index ade1aecd7c71..e2357d23202e 100644 --- a/net/ipv4/raw.c +++ b/net/ipv4/raw.c @@ -482,7 +482,7 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) int free = 0; __be32 daddr; __be32 saddr; - int err; + int uc_index, err; struct ip_options_data opt_copy; struct raw_frag_vec rfv; int hdrincl; @@ -576,24 +576,25 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) tos = get_rttos(&ipc, inet); scope = ip_sendmsg_scope(inet, &ipc, msg); + uc_index = READ_ONCE(inet->uc_index); if (ipv4_is_multicast(daddr)) { if (!ipc.oif || netif_index_is_l3_master(sock_net(sk), ipc.oif)) ipc.oif = inet->mc_index; if (!saddr) saddr = inet->mc_addr; } else if (!ipc.oif) { - ipc.oif = inet->uc_index; - } else if (ipv4_is_lbcast(daddr) && inet->uc_index) { + ipc.oif = uc_index; + } else if (ipv4_is_lbcast(daddr) && uc_index) { /* oif is set, packet is to local broadcast * and uc_index is set. oif is most likely set * by sk_bound_dev_if. If uc_index != oif check if the * oif is an L3 master and uc_index is an L3 slave. * If so, we want to allow the send using the uc_index. */ - if (ipc.oif != inet->uc_index && + if (ipc.oif != uc_index && ipc.oif == l3mdev_master_ifindex_by_index(sock_net(sk), - inet->uc_index)) { - ipc.oif = inet->uc_index; + uc_index)) { + ipc.oif = uc_index; } } |