ipv4: use dst with ref during bcast/mcast loopback
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>
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@ -122,6 +122,7 @@ static int ip_dev_loopback_xmit(struct sk_buff *newskb)
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newskb->pkt_type = PACKET_LOOPBACK;
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newskb->ip_summed = CHECKSUM_UNNECESSARY;
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WARN_ON(!skb_dst(newskb));
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skb_dst_force(newskb);
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netif_rx_ni(newskb);
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return 0;
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}
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