svn commit: r250370 - in stable/9: share/man/man4 sys/dev/e1000

[Sean Bruno]

Author: sbruno
Date: Wed May  8 15:55:29 2013
New Revision: 250370
URL: http://svnweb.freebsd.org/changeset/base/250370

Log:
  MFC r249070
  
  Update man page for igb(4) with a little bit of information about
  hw.igb.num_queues for those so inclined.

Modified:
  stable/9/share/man/man4/igb.4
  stable/9/sys/dev/e1000/if_igb.c
Directory Properties:
  stable/9/share/man/man4/   (props changed)
  stable/9/sys/   (props changed)
  stable/9/sys/dev/   (props changed)
  stable/9/sys/dev/e1000/   (props changed)

Modified: stable/9/share/man/man4/igb.4
==============================================================================
--- stable/9/share/man/man4/igb.4	Wed May  8 15:50:24 2013	(r250369)
+++ stable/9/share/man/man4/igb.4	Wed May  8 15:55:29 2013	(r250370)
@@ -31,7 +31,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd May 12, 2012
+.Dd March 25, 2013
 .Dt IGB 4
 .Os
 .Sh NAME
@@ -160,6 +160,11 @@ The minimum is 80, and the maximum is 40
 .It Va hw.igb.enable_aim
 If set to 1, enable Adaptive Interrupt Moderation.
 The default is to enable Adaptive Interrupt Moderation.
+.It Va hw.igb.num_queues
+Numer of queues used for data transfer.
+If set to 0, number of queues will be configured
+automatically based on number of CPUs and max
+supported MSI-X messages on the device.
 .It Va kern.ipc.nmbclusters
 The maximum number of mbuf clusters allowed.
 If the system has more than one igb card or jumbo frames are

Modified: stable/9/sys/dev/e1000/if_igb.c
==============================================================================
--- stable/9/sys/dev/e1000/if_igb.c	Wed May  8 15:50:24 2013	(r250369)
+++ stable/9/sys/dev/e1000/if_igb.c	Wed May  8 15:55:29 2013	(r250370)
@@ -375,7 +375,8 @@ SYSCTL_INT(_hw_igb, OID_AUTO, header_spl
 
 /*
 ** This will autoconfigure based on
-** the number of CPUs if left at 0.
+** the number of CPUs and max supported MSI-X messages
+** if left at 0.
 */
 static int igb_num_queues = 0;
 TUNABLE_INT("hw.igb.num_queues", &igb_num_queues);