[DragonFlyBSD - Bug #2458] ath: ran out of descriptors

[Johannes Hofmann via Redmine <bugtracker-admin@xxxxxxxxxxxxxxxxxxxxx>]

Issue #2458 has been updated by Johannes Hofmann.


I created a wlan_serialize branch in my leaf repo (~hofmann).
It's tested with ath an iwn so far.
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Bug #2458: ath: ran out of descriptors
http://bugs.dragonflybsd.org/issues/2458

Author: Johannes Hofmann
Status: New
Priority: Normal
Assignee: 
Category: 
Target version: 


After running for a while in a WPA secured WLAN with an ath(4) card, I get:
   ath: ran out of descriptors
and the network stops working.
Sometimes destroying wlan0 and kldunload if_ath; kldload if_ath
restores network, but in some cases I get 



Nov 18 12:45:06 plop kernel: Trace beginning at frame 0xd6264ca8
Nov 18 12:45:06 plop kernel: m_free(ffffffff,d47f1c00,0,d936dc00,d5a94400) at m_free+0xc6 0x
c01f26ed 
Nov 18 12:45:06 plop kernel: m_free(d47f7800,d6264cfc,c09c8846,d47f7800,c47576f0) at m_free+
0xc6 0xc01f26ed 
Nov 18 12:45:06 plop kernel: m_freem(d47f7800,c47576f0,d6264cfc,c09e8e58,d5cf9f80) at m_free
m+0x15 0xc01f29c6 
Nov 18 12:45:06 plop kernel: ieee80211_flush_ifq(d5a94400,d4c46500,ffffffff,d5e35478,c47576f
0) at ieee80211_flush_ifq+0x70 0xc09c8846 
Nov 18 12:45:06 plop kernel: ieee80211_newstate_task(d4c46500,1,c47576f4,1,c475770c) at ieee
80211_newstate_task+0x231 0xc09e74e3 
Nov 18 12:45:06 plop kernel: taskqueue_run(c47576f0,c475770c,0,c03d27b3,0) at taskqueue_run+
0x93 0xc01dd304 
Nov 18 12:45:06 plop kernel: taskqueue_thread_loop(d5e3544c,0,0,0,0) at taskqueue_thread_loo
p+0x4b 0xc01dd5ed 
Nov 18 12:45:06 plop kernel: lwkt_exit() at lwkt_exit 0xc01bbab3 


and the system freezes on kldunload if_ath


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