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authorEric Dumazet <edumazet@google.com>2014-09-25 16:17:49 +0200
committerDavid S. Miller <davem@davemloft.net>2014-09-28 23:27:36 +0200
commit5804283d7cb1da46485950d545dd7869137dcda5 (patch)
treeba4656cb940b502838058edbf81d15cf147d0171 /net/sched/cls_fw.c
parentMerge branch 'r8152' (diff)
downloadlinux-5804283d7cb1da46485950d545dd7869137dcda5.tar.xz
linux-5804283d7cb1da46485950d545dd7869137dcda5.zip
mlx4: exploit skb->xmit_more to conditionally send doorbell
skb->xmit_more tells us if another skb is coming next. We need to send doorbell when : xmit_more is not set, or txqueue is stopped (preventing next skb to come immediately) Tested with a modified pktgen version, I got a 40% increase of throughput. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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