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ip_tunnel: allow not to count pkts on tstats by setting skb's dev to NULL

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commit 5684abf7020dfc5f0b6ba1d68eda3663871fce52 upstream.

iptunnel_xmit() works as a common function, also used by a udp tunnel
which doesn't have to have a tunnel device, like how TIPC works with
udp media.

In these cases, we should allow not to count pkts on dev's tstats, so
that udp tunnel can work with no tunnel device safely.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Tommi Rantala <tommi.t.rantala@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xin Long 2019-06-17 21:34:13 +08:00 committed by Greg Kroah-Hartman
parent 13d25588c4
commit b72fd569f5
1 changed files with 6 additions and 3 deletions
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9
net/ipv4/ip_tunnel_core.c
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@ -89,9 +89,12 @@ void iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb,
__ip_select_ident(net, iph, skb_shinfo(skb)->gso_segs ?: 1);
err = ip_local_out(net, sk, skb);
if (unlikely(net_xmit_eval(err)))
pkt_len = 0;
iptunnel_xmit_stats(dev, pkt_len);
if (dev) {
if (unlikely(net_xmit_eval(err)))
pkt_len = 0;
iptunnel_xmit_stats(dev, pkt_len);
}
}
EXPORT_SYMBOL_GPL(iptunnel_xmit);