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udp6: fix encap return code for resubmitting

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[ Upstream commit 84dad55951 ]

The commit eb63f2964d ("udp6: add missing checks on edumux packet
processing") used the same return code convention of the ipv4 counterpart,
but ipv6 uses the opposite one: positive values means resubmit.

This change addresses the issue, using positive return value for
resubmitting. Also update the related comment, which was broken, too.

Fixes: eb63f2964d ("udp6: add missing checks on edumux packet processing")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Paolo Abeni 2018-10-17 11:44:04 +02:00 committed by Greg Kroah-Hartman
parent 606694e5ec
commit 189771d69e
1 changed files with 2 additions and 4 deletions
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6
net/ipv6/udp.c
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@ -794,11 +794,9 @@ static int udp6_unicast_rcv_skb(struct sock *sk, struct sk_buff *skb,
ret = udpv6_queue_rcv_skb(sk, skb);
/* a return value > 0 means to resubmit the input, but
* it wants the return to be -protocol, or 0
*/
/* a return value > 0 means to resubmit the input */
if (ret > 0)
return -ret;
return ret;
return 0;
}