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ipv4: use dst with ref during bcast/mcast loopback

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Make sure skb dst has reference when moving to
another context. Currently, I don't see protocols that can
hit it when sending broadcasts/multicasts to loopback using
noref dsts, so it is just a precaution.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Anastasov 2011-08-07 10:17:22 +00:00 • committed by David S. Miller
parent 47670b767b
commit d52fbfc9e5
1 changed files with 1 additions and 0 deletions
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1
net/ipv4/ip_output.c
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@ -122,6 +122,7 @@ static int ip_dev_loopback_xmit(struct sk_buff *newskb)
newskb->pkt_type = PACKET_LOOPBACK; newskb->pkt_type = PACKET_LOOPBACK;
newskb->ip_summed = CHECKSUM_UNNECESSARY; newskb->ip_summed = CHECKSUM_UNNECESSARY;
WARN_ON(!skb_dst(newskb)); WARN_ON(!skb_dst(newskb));
skb_dst_force(newskb);
netif_rx_ni(newskb); netif_rx_ni(newskb);
return 0; return 0;
} }