net: add low latency socket poll
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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af12fa6e
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