On Mon, 26 Nov 2012 15:56:52 +0800 Jason Wang <jasow...@redhat.com> wrote:
> Some deivces do not free the old tx skbs immediately after it has been sent > (usually in tx interrupt). One such example is virtio-net which optimizes for > virt and only free the possible old tx skbs during the next packet sending. > This > would lead the pktgen to wait forever in the refcount of the skb if no other > pakcet will be sent afterwards. > > Solving this issue by introducing a new flag IFF_TX_SKB_FREE_DELAY which could > notify the pktgen that the device does not free skb immediately after it has > been sent and let it not to wait for the refcount to be one. > > Signed-off-by: Jason Wang <jasow...@redhat.com> Another alternative would be using skb_orphan() and skb->destructor. There are other cases where skb's are not freed right away. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
