tcp: add low latency socket poll support.

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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>

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Eliezer Tamir 2013-06-10 11:40:10 +03:00 • committed by David S. Miller

parent a5b50476f7

commit d30e383bb8

3 changed files with 9 additions and 0 deletions

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5

net/ipv4/tcp.c

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2

net/ipv4/tcp_ipv4.c

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2

net/ipv6/tcp_ipv6.c

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