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tcp: increment sk_drops for listeners
Goal: packets dropped by a listener are accounted for. This adds tcp_listendrop() helper, and clears sk_drops in sk_clone_lock() so that children do not inherit their parent drop count. Note that we no longer increment LINUX_MIB_LISTENDROPS counter when sending a SYNCOOKIE, since the SYN packet generated a SYNACK. We already have a separate LINUX_MIB_SYNCOOKIESSENT Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet
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David S. Miller
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Apr 5, 2016
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