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| author | Eric Dumazet <edumazet@google.com> | 2012-06-11 07:21:36 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-11 13:12:33 -0700 |
| commit | 3f16da51b0e533871d22a29682f3c3969d4f7e22 (patch) | |
| tree | 4d53fd232311ab1dba229121c07ec83a4576d9eb | |
| parent | e30478598a8476d02e3b00caa89ce1a3b1dad54b (diff) | |
| download | linux-3f16da51b0e533871d22a29682f3c3969d4f7e22.tar.gz linux-3f16da51b0e533871d22a29682f3c3969d4f7e22.tar.bz2 linux-3f16da51b0e533871d22a29682f3c3969d4f7e22.zip | |
lpc_eth: fix tx completion
__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>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/nxp/lpc_eth.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c index 10febdc2bd1a..083d6715335c 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) |