diff options
| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2016-01-07 14:28:39 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-01-10 17:28:24 -0500 |
| commit | 787d7ac308ff2279e4b2ea393ad4d990de486ef2 (patch) | |
| tree | 30370eacf684b73d796ebfa081f4be5a99f87b96 /drivers/net | |
| parent | 07b9b37c227cb8d88d478b4a9c5634fee514ede1 (diff) | |
| download | linux-787d7ac308ff2279e4b2ea393ad4d990de486ef2.tar.bz2 | |
udp: restrict offloads to one namespace
udp tunnel offloads tend to aggregate datagrams based on inner
headers. gro engine gets notified by tunnel implementations about
possible offloads. The match is solely based on the port number.
Imagine a tunnel bound to port 53, the offloading will look into all
DNS packets and tries to aggregate them based on the inner data found
within. This could lead to data corruption and malformed DNS packets.
While this patch minimizes the problem and helps an administrator to find
the issue by querying ip tunnel/fou, a better way would be to match on
the specific destination ip address so if a user space socket is bound
to the same address it will conflict.
Cc: Tom Herbert <tom@herbertland.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/geneve.c | 2 | ||||
| -rw-r--r-- | drivers/net/vxlan.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 58efdec12f30..db96b0cbb8ba 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -376,7 +376,7 @@ static void geneve_notify_add_rx_port(struct geneve_sock *gs) int err; if (sa_family == AF_INET) { - err = udp_add_offload(&gs->udp_offloads); + err = udp_add_offload(sock_net(sk), &gs->udp_offloads); if (err) pr_warn("geneve: udp_add_offload failed with status %d\n", err); diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 405a7b6cca25..e1e147f2d6ce 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -621,7 +621,7 @@ static void vxlan_notify_add_rx_port(struct vxlan_sock *vs) int err; if (sa_family == AF_INET) { - err = udp_add_offload(&vs->udp_offloads); + err = udp_add_offload(net, &vs->udp_offloads); if (err) pr_warn("vxlan: udp_add_offload failed with status %d\n", err); } |