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igb: move setting of buffsz out of repeated path in alloc_rx_buffers 

buffsz is being repeatedly set when allocaing buffers.  Since this value
should only need to be set once in the function I am moving it out of the
looped portion of the path.

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 2009-02-06 23:15:25 +00:00 committed by David S. Miller
parent 69d3ca5357
commit db76176215
1 changed files with 8 additions and 11 deletions
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19
drivers/net/igb/igb_main.c
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@ -3943,10 +3943,17 @@ static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring,
struct igb_buffer *buffer_info;
struct sk_buff *skb;
unsigned int i;
int bufsz;
i = rx_ring->next_to_use;
buffer_info = &rx_ring->buffer_info[i];
if (adapter->rx_ps_hdr_size)
bufsz = adapter->rx_ps_hdr_size;
else
bufsz = adapter->rx_buffer_len;
bufsz += NET_IP_ALIGN;
while (cleaned_count--) {
rx_desc = E1000_RX_DESC_ADV(*rx_ring, i);
@ -3962,23 +3969,14 @@ static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring,
buffer_info->page_offset ^= PAGE_SIZE / 2;
}
buffer_info->page_dma =
pci_map_page(pdev,
buffer_info->page,
pci_map_page(pdev, buffer_info->page,
buffer_info->page_offset,
PAGE_SIZE / 2,
PCI_DMA_FROMDEVICE);
}
if (!buffer_info->skb) {
int bufsz;
if (adapter->rx_ps_hdr_size)
bufsz = adapter->rx_ps_hdr_size;
else
bufsz = adapter->rx_buffer_len;
bufsz += NET_IP_ALIGN;
skb = netdev_alloc_skb(netdev, bufsz);
if (!skb) {
adapter->alloc_rx_buff_failed++;
goto no_buffers;
@ -3994,7 +3992,6 @@ static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring,
buffer_info->dma = pci_map_single(pdev, skb->data,
bufsz,
PCI_DMA_FROMDEVICE);
}
/* Refresh the desc even if buffer_addrs didn't change because
* each write-back erases this info. */