diff options
| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2016-01-07 16:28:39 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-01-11 01:28:24 +0300 |
| commit | 787d7ac308ff2279e4b2ea393ad4d990de486ef2 (patch) | |
| tree | 30370eacf684b73d796ebfa081f4be5a99f87b96 /net/ipv4/fou.c | |
| parent | 07b9b37c227cb8d88d478b4a9c5634fee514ede1 (diff) | |
| download | linux-787d7ac308ff2279e4b2ea393ad4d990de486ef2.tar.xz | |
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 'net/ipv4/fou.c')
| -rw-r--r-- | net/ipv4/fou.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c index bd903fe0f750..976f0dcf6991 100644 --- a/net/ipv4/fou.c +++ b/net/ipv4/fou.c @@ -498,7 +498,7 @@ static int fou_create(struct net *net, struct fou_cfg *cfg, sk->sk_allocation = GFP_ATOMIC; if (cfg->udp_config.family == AF_INET) { - err = udp_add_offload(&fou->udp_offloads); + err = udp_add_offload(net, &fou->udp_offloads); if (err) goto error; } |