1b844afe9e
InfiniBand HCAs replicate multicast packets back to the QP that sent them if that QP is attached to the destination multicast group. This means that IPoIB multicasts are often replicated back to the receive queue of the interface that generated them. To avoid confusing the network stack, we drop these duplicates within the IPoIB driver. However, there's no reason to free the skb that received the duplicate and then immediately allocate a new skb to post to the receive queue. We can be more efficient and just repost the same skb. Signed-off-by: Roland Dreier <rolandd@cisco.com> |
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