luck/tmp_suning_uos_patched
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[NET]: Fix GSO problems in dev_hard_start_xmit()

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Fix 2 problems in dev_hard_start_xmit():

1. nskb->next needs to link back to skb->next if hard_start_xmit()
returns non-zero.

2. Since the total number of GSO fragments may exceed MAX_SKB_FRAGS + 1,
it needs to stop transmitting if the netif_queue is stopped.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2006-06-25 23:57:04 -07:00 committed by David S. Miller
parent 0718bcc09b
commit f54d9e8d7f
1 changed files with 3 additions and 0 deletions
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3
net/core/dev.c
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@ -1325,9 +1325,12 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
nskb->next = NULL;
rc = dev->hard_start_xmit(nskb, dev);
if (unlikely(rc)) {
nskb->next = skb->next;
skb->next = nskb;
return rc;
}
if (unlikely(netif_queue_stopped(dev) && skb->next))
return NETDEV_TX_BUSY;
} while (skb->next);
skb->destructor = DEV_GSO_CB(skb)->destructor;