Date: Wed, 3 Jun 2015 15:55:46 +0000 (UTC) From: Sean Bruno <sbruno@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r283953 - projects/em_mq/share/man/man4 Message-ID: <201506031555.t53Ftk5S025471@svn.freebsd.org>
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Author: sbruno Date: Wed Jun 3 15:55:45 2015 New Revision: 283953 URL: https://svnweb.freebsd.org/changeset/base/283953 Log: Update man page with review comments from wblock. Update BUGS section with requested text from Intel regarding MSI-X + EM_MULTIQUEUE Modified: projects/em_mq/share/man/man4/em.4 Modified: projects/em_mq/share/man/man4/em.4 ============================================================================== --- projects/em_mq/share/man/man4/em.4 Wed Jun 3 15:43:55 2015 (r283952) +++ projects/em_mq/share/man/man4/em.4 Wed Jun 3 15:55:45 2015 (r283953) @@ -206,13 +206,17 @@ prompt before booting the kernel or stor .Xr loader.conf 5 . .Bl -tag -width indent .It Va hw.em.eee_setting -Disable or Enable Energy Efficient Ethernet. Default 1 (disabled). +Disable or enable Energy Efficient Ethernet. +Default 1 (disabled). .It Va hw.em.msix -Enable or Disable MSI-X style interrupts. Default 1 (on). +Enable or disable MSI-X style interrupts. +Default 1 (enabled). .It Va hw.em.smart_pwr_down -Enable or Disable smart power down features on newer adapters. Default 0 (off). +Enable or disable smart power down features on newer adapters. +Default 0 (disabled). .It Va hw.em.sbp -Show bad packets when in promiscuous mode. Default 0 (off). +Show bad packets when in promiscuous mode. +Default 0 (off). .It Va hw.em.rxd Number of receive descriptors allocated by the driver. The default value is 1024 for adapters newer than 82547, @@ -245,7 +249,8 @@ If is non-zero, this tunable limits the maximum delay in which a transmit interrupt is generated. .It Va hw.em.num_queues -Number of h/w queues that we will run on this adapter. Max 2. Defaults to 1. +Number of hardware queues that will be configured on this adapter (maximum of 2) +Defaults to 1. Only valid with kernel configuration .Cd "options EM_MULTIQUEUE". .El @@ -307,3 +312,6 @@ You can enable it on an .Nm interface using .Xr ifconfig 8 . +.Pp +Activating EM_MULTIQUEUE support disables MSI-X features by default. +Until these issues are resolved, no not run MSI-X with EM_MULTIQUEUE.
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