Messages in this thread Patch in this message | | | Subject | [PATCH] net: lpc_eth: fix tx completion | From | Eric Dumazet <> | Date | Mon, 11 Jun 2012 19:21:36 +0200 |
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From: Eric Dumazet <edumazet@google.com>
__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 <edumazet@google.com> Reported-by: Roland Stigge <stigge@antcom.de> Tested-by: Roland Stigge <stigge@antcom.de> Cc: Kevin Wells <kevin.wells@nxp.com> --- drivers/net/ethernet/nxp/lpc_eth.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c index 8d2666f..ff76c21 100644 --- a/drivers/net/ethernet/nxp/lpc_eth.c +++ b/drivers/net/ethernet/nxp/lpc_eth.c @@ -946,16 +946,16 @@ static void __lpc_handle_xmit(struct net_device *ndev) /* 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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