kern/138660: igb driver troubles in 8.0-BETA4

[Yury Lazarev]

>Number:         138660
>Category:       kern
>Synopsis:       igb driver troubles in 8.0-BETA4
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Sep 09 13:20:00 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Yury Lazarev
>Release:        FreeBSD 8.0-BETA4
>Organization:
>Environment:
FreeBSD brain64.me.com 8.0-BETA4 FreeBSD 8.0-BETA4 #0: Sun Sep  6 04:44:31 UTC 2009     root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64

>Description:
If hw.igb.rxd is not default, i receive troubles with vlan on interface.
When system is booting i see
  GET BUF: dmamap load failure - 12
and (if i use many vlans) also
  igb0 Could not setup receive structures 
many times.

>How-To-Repeat:
/boot/loader.conf
hw.igb.rxd=4096         # IGB Tuning
hw.igb.txd=4096         # IGB Tuning

/etc/rc.conf
cloned_interfaces="vlan0"
ifconfig_vlan0="inet 10.101.1.1 netmask 255.255.255.252 vlan 3001 vlandev igb0"

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: