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igb/igbvf: cleanup exception handling in tx_map_adv 

After removing the skb_dma_map/unmap calls the exception handling in
igb_tx_map_adv is not correct.  The issue is that the count value was not
being correctly handled so as a result we were not rewinding the ring as
back as we should have been.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2010-01-23 01:35:00 -08:00 committed by David S. Miller
parent de4fc07aff
commit 8581145f39
2 changed files with 2 additions and 2 deletions
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2
drivers/net/igb/igb_main.c
View File

@ -3584,6 +3584,7 @@ static inline int igb_tx_map_adv(struct igb_ring *tx_ring, struct sk_buff *skb,
for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
struct skb_frag_struct *frag;
count++;
i++;
if (i == tx_ring->count)
i = 0;
@ -3605,7 +3606,6 @@ static inline int igb_tx_map_adv(struct igb_ring *tx_ring, struct sk_buff *skb,
if (pci_dma_mapping_error(pdev, buffer_info->dma))
goto dma_error;
count++;
}
tx_ring->buffer_info[i].skb = skb;

2
drivers/net/igbvf/netdev.c
View File

@ -2126,6 +2126,7 @@ static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter,
for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
struct skb_frag_struct *frag;
count++;
i++;
if (i == tx_ring->count)
i = 0;
@ -2146,7 +2147,6 @@ static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter,
PCI_DMA_TODEVICE);
if (pci_dma_mapping_error(pdev, buffer_info->dma))
goto dma_error;
count++;
}
tx_ring->buffer_info[i].skb = skb;