diff options
| author | Daniel Borkmann <dborkman@redhat.com> | 2014-08-07 22:22:47 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-10-15 08:36:40 +0200 |
| commit | c5c2f8986e4b03cad626e40caf9f93aedbef7254 (patch) | |
| tree | e3222fdb3cd055f9b5c583241f139d33a989b87f | |
| parent | 89161fe91f2fd1049bcc38f5d4b814acab7b83f5 (diff) | |
netlink: reset network header before passing to taps
[ Upstream commit 4e48ed883c72e78c5a910f8831ffe90c9b18f0ec ]
netlink doesn't set any network header offset thus when the skb is
being passed to tap devices via dev_queue_xmit_nit(), it emits klog
false positives due to it being unset like:
...
[ 124.990397] protocol 0000 is buggy, dev nlmon0
[ 124.990411] protocol 0000 is buggy, dev nlmon0
...
So just reset the network header before passing to the device; for
packet sockets that just means nothing will change - mac and net
offset hold the same value just as before.
Reported-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/netlink/af_netlink.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 0dfe894afd48..c375d731587f 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -205,7 +205,7 @@ static int __netlink_deliver_tap_skb(struct sk_buff *skb, nskb->protocol = htons((u16) sk->sk_protocol); nskb->pkt_type = netlink_is_kernel(sk) ? PACKET_KERNEL : PACKET_USER; - + skb_reset_network_header(nskb); ret = dev_queue_xmit(nskb); if (unlikely(ret > 0)) ret = net_xmit_errno(ret); |