RE: [PATCH] igb: add module param to set max-rss-queues.

From: greearb@candelatech.com

Sent: 24 March 2017 20:59
From: Ben Greear <redacted>

In systems where you may have a very large number of network
adapters, certain drivers may consume an unfair amount of
IRQ resources.  So, allow a module param that will limit the
number of IRQs at driver load time.  This way, other drivers
(40G Ethernet, for instance), which probably will need the
multiple IRQs more, will not be starved of IRQ resources.

ISTM that the functions for allocating MSI-X should allow a
driver to request additional interrupts after the original probe.

Then drivers than can use additional interrupts but get probed
early won't use up all the vectors before other drivers get
a chance.

	David