kern/186733: iwn device (5100) periodically times out killing network connectivity

[R Tyler Croy]

>Number:         186733
>Category:       kern
>Synopsis:       iwn device (5100) periodically times out killing network connectivity
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Feb 13 18:20:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator:     R Tyler Croy
>Release:        11.0-CURRENT
>Organization:
n/a
>Environment:
FreeBSD kiwi 11.0-CURRENT FreeBSD 11.0-CURRENT #0 b239dc9(master): Wed Feb  5 20:43:10 PST 2014     tyler at kiwi:/usr/home/tyler/scratch/obj/usr/home/tyler/source/github/freebsd/sys/KIWI  amd64
>Description:
Currently at -CURRENT with r261524. Not sure what the cause of this, I've not been able t reproduce it consistently. However, when it starts happening, it seems to happen constantly until a reboot or suspend event.


Feb 13 10:03:52 kiwi wpa_supplicant[16469]: wlan0: CTRL-EVENT-CONNECTED - Connection to 08:d0:9f:be:f8:40 completed [id=2 id_str=]
Feb 13 10:03:54 kiwi dhclient: New IP Address (wlan0): 10.10.2.214
Feb 13 10:03:54 kiwi dhclient: New Subnet Mask (wlan0): 255.255.240.0
Feb 13 10:03:54 kiwi dhclient: New Broadcast Address (wlan0): 10.10.15.255
Feb 13 10:03:54 kiwi dhclient: New Routers (wlan0): 10.10.0.1
Feb 13 10:05:46 kiwi kernel: iwn0: device timeout
Feb 13 10:05:46 kiwi kernel: iwn0: iwn_tx_data: m=0xfffff800132d3b00: seqno (1203) (179) != ring index (0) !
Feb 13 10:05:46 kiwi kernel: iwn0: iwn_tx_data: m=0xfffff8001332a000: seqno (1204) (180) != ring index (1) !
Feb 13 10:05:46 kiwi kernel: iwn0: iwn_tx_data: m=0xfffff8002c7f6a00: seqno (1205) (181) != ring index (2) !
Feb 13 10:05:46 kiwi kernel: iwn0: iwn_tx_data: m=0xfffff80013450700: seqno (1206) (182) != ring index (3) !
Feb 13 10:05:46 kiwi kernel: iwn0: iwn_tx_data: m=0xfffff80025889300: seqno (1207) (183) != ring index (4) !


After this happens, I'll usually try a `service netif restart` which gives me connectivity back for some amount of time, but within 5 minutes the error happens again.
>How-To-Repeat:

>Fix:


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