xen-netfront: add multiqueue support

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Add support for multiple TX and RX queue pairs. The default number of queues
is set to 4, but can be easily changed from the sysctl node hw.xn.num_queues.

Also heavily refactor netfront driver: break out a bunch of helper
functions and different structures. Use threads to handle TX and RX.
Remove some dead code and fix quite a few bugs as I go along.

Submitted by:		Wei Liu <wei.liu2@citrix.com>
Reviewed by:		royger
Sponsored by:		Citrix Systems R&D
Relnotes:		Yes
Differential Revision:	https://reviews.freebsd.org/D4193

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This commit is contained in:

royger 2016-01-20 15:02:43 +00:00

parent fb8428bdbe

commit cbb7a2ba43

1 changed files with 983 additions and 665 deletions

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sys/dev/xen/netfront/netfront.c

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