[ 027/187] lpc_eth: fix tx completion
From: Greg KH
3.4-stable review patch. If anyone has any objections, please let me know.
--
From: Eric Dumazet
[ Upstream commit 3f16da51b0e533871d22a29682f3c3969d4f7e22 ]
__lpc_handle_xmit() has two bugs :
1) It can leak skbs in case TXSTATUS_ERROR is set
2) It can wake up txqueue while no slot was freed.
Signed-off-by: Eric Dumazet
Reported-by: Roland Stigge
Tested-by: Roland Stigge
Cc: Kevin Wells
Signed-off-by: David S. Miller
Signed-off-by: Greg Kroah-Hartman
---
drivers/net/ethernet/nxp/lpc_eth.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/nxp/lpc_eth.c
+++ b/drivers/net/ethernet/nxp/lpc_eth.c
@@ -936,16 +936,16 @@ static void __lpc_handle_xmit(struct net
/* Update stats */
ndev->stats.tx_packets++;
ndev->stats.tx_bytes += skb->len;
-
- /* Free buffer */
- dev_kfree_skb_irq(skb);
}
+ dev_kfree_skb_irq(skb);
txcidx = readl(LPC_ENET_TXCONSUMEINDEX(pldat->net_base));
}
- if (netif_queue_stopped(ndev))
- netif_wake_queue(ndev);
+ if (pldat->num_used_tx_buffs <= ENET_TX_DESC/2) {
+ if (netif_queue_stopped(ndev))
+ netif_wake_queue(ndev);
+ }
}
static int __lpc_handle_recv(struct net_device *ndev, int budget)
--
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[ 027/187] lpc_eth: fix tx completion
From: Greg KH gre...@linuxfoundation.org
3.4-stable review patch. If anyone has any objections, please let me know.
--
From: Eric Dumazet eduma...@google.com
[ Upstream commit 3f16da51b0e533871d22a29682f3c3969d4f7e22 ]
__lpc_handle_xmit() has two bugs :
1) It can leak skbs in case TXSTATUS_ERROR is set
2) It can wake up txqueue while no slot was freed.
Signed-off-by: Eric Dumazet eduma...@google.com
Reported-by: Roland Stigge sti...@antcom.de
Tested-by: Roland Stigge sti...@antcom.de
Cc: Kevin Wells kevin.we...@nxp.com
Signed-off-by: David S. Miller da...@davemloft.net
Signed-off-by: Greg Kroah-Hartman gre...@linuxfoundation.org
---
drivers/net/ethernet/nxp/lpc_eth.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/nxp/lpc_eth.c
+++ b/drivers/net/ethernet/nxp/lpc_eth.c
@@ -936,16 +936,16 @@ static void __lpc_handle_xmit(struct net
/* Update stats */
ndev-stats.tx_packets++;
ndev-stats.tx_bytes += skb-len;
-
- /* Free buffer */
- dev_kfree_skb_irq(skb);
}
+ dev_kfree_skb_irq(skb);
txcidx = readl(LPC_ENET_TXCONSUMEINDEX(pldat-net_base));
}
- if (netif_queue_stopped(ndev))
- netif_wake_queue(ndev);
+ if (pldat-num_used_tx_buffs = ENET_TX_DESC/2) {
+ if (netif_queue_stopped(ndev))
+ netif_wake_queue(ndev);
+ }
}
static int __lpc_handle_recv(struct net_device *ndev, int budget)
--
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