tree cae914154ff4a50fcf9ac314a70b347e09f20efe
parent a5b50476f77a8fcc8055c955720d05a7c2d9c532
author Eliezer Tamir <eliezer.tamir@linux.intel.com> 1370853610 +0300
committer David S. Miller <davem@davemloft.net> 1370924556 -0700

tcp: add low latency socket poll support.

Adds low latency socket poll support for TCP.
In tcp_v[46]_rcv() add a call to sk_mark_ll() to copy the napi_id
from the skb to the sk.
In tcp_recvmsg(), when there is no data in the socket we busy-poll.
This is a good example of how to add busy-poll support to more protocols.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Tested-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>