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authorEric Dumazet <edumazet@google.com>2012-06-11 07:21:36 +0000
committerDavid S. Miller <davem@davemloft.net>2012-06-11 13:12:33 -0700
commit3f16da51b0e533871d22a29682f3c3969d4f7e22 (patch)
tree4d53fd232311ab1dba229121c07ec83a4576d9eb /drivers/net/ethernet/nxp
parente30478598a8476d02e3b00caa89ce1a3b1dad54b (diff)
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>
Diffstat (limited to 'drivers/net/ethernet/nxp')
-rw-r--r--drivers/net/ethernet/nxp/lpc_eth.c10
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 10febdc2bd1..083d6715335 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)