[PATCH] atl1c: dont use highprio tx queue

From: Eric Dumazet
Date: Thu Feb 16 2012 - 01:43:33 EST


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@xxxxxxxx>
Tested-by: Thomas Meyer <thomas@xxxxxxxx>
Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Cc: Jay Cliburn <jcliburn@xxxxxxxxx>
Cc: Chris Snook <chris.snook@xxxxxxxxx>
---
drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 4 ----
1 file changed, 4 deletions(-)

diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index b859124..1ff3c6d 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -2244,10 +2244,6 @@ static netdev_tx_t atl1c_xmit_frame(struct sk_buff *skb,
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 */


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