Date: Fri, 20 Apr 2012 07:20:13 GMT From: Martin Matuska <mm@FreeBSD.org> To: freebsd-net@FreeBSD.org Subject: Re: kern/155030: [igb] igb(4) DEVICE_POLLING does not work with carp(4) Message-ID: <201204200720.q3K7KDu9020579@freefall.freebsd.org>
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The following reply was made to PR kern/155030; it has been noted by GNATS. From: Martin Matuska <mm@FreeBSD.org> To: bug-followup@FreeBSD.org, mm@FreeBSD.org Cc: Subject: Re: kern/155030: [igb] igb(4) DEVICE_POLLING does not work with carp(4) Date: Fri, 20 Apr 2012 09:18:50 +0200 The problem was actually in the configuration of the igb driver. Polling works only with hw.igb.num_queues=1 - and this is also described in code comments of if_igb.c: * Legacy polling routine : if using this code you MUST be sure that * multiqueue is not defined, ie, set igb_num_queues to 1. This should be: a) added to the manpage b) the driver should not attempt polling if hw.igb.num_queues > 1 -- Martin Matuska FreeBSD committer http://blog.vx.sk
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