net: add low latency socket poll

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Adds an ndo_ll_poll method and the code that supports it.
This method can be used by low latency applications to busy-poll
Ethernet device queues directly from the socket code.
sysctl_net_ll_poll controls how many microseconds to poll.
Default is zero (disabled).
Individual protocol support will be added by subsequent patches.

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 11:39:50 +03:00 • committed by David S. Miller

parent af12fa6e46

commit 0602129286

12 changed files with 208 additions and 2 deletions

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3

include/linux/netdevice.h

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8

include/linux/skbuff.h

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148

include/net/ll_poll.h

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4

include/net/sock.h

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1

include/uapi/linux/snmp.h

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