lkml.org 
[lkml]   [2012]   [Mar]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[ 14/41] atl1c: dont use highprio tx queue
3.2-stable review patch.  If anyone has any objections, please let me know.

------------------


From: Eric Dumazet <eric.dumazet@gmail.com>

[ Upstream commit 11aad99af6ef629ff3b05d1c9f0936589b204316 ]

This driver attempts to use two TX rings but lacks proper support :

1) IRQ handler only takes care of TX completion on first TX ring
2) the stop/start logic uses the legacy functions (for non multiqueue
drivers)

This means all packets witk skb mark set to 1 are sent through high
queue but are never cleaned and queue eventualy fills and block the
device, triggering the infamous "NETDEV WATCHDOG" message.

Lets use a single TX ring to fix the problem, this driver is not a real
multiqueue one yet.

Minimal fix for stable kernels.

Reported-by: Thomas Meyer <thomas@m3y3r.de>
Tested-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Jay Cliburn <jcliburn@gmail.com>
Cc: Chris Snook <chris.snook@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 4 ----
1 file changed, 4 deletions(-)

--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -2241,10 +2241,6 @@ static netdev_tx_t atl1c_xmit_frame(stru
dev_info(&adapter->pdev->dev, "tx locked\n");
return NETDEV_TX_LOCKED;
}
- if (skb->mark == 0x01)
- type = atl1c_trans_high;
- else
- type = atl1c_trans_normal;

if (atl1c_tpd_avail(adapter, type) < tpd_req) {
/* no enough descriptor, just stop queue */



\
 
 \ /
  Last update: 2012-03-17 00:51    [W:0.146 / U:1.520 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site