Commit 91615f76 authored by Jesse Brandeburg's avatar Jesse Brandeburg Committed by David S. Miller

igb: fix unmap length bug

driver was mixing NET_IP_ALIGN count bytes in map/unmap calls
unevenly. Only map the bytes that the hardware might dma into

also fix unmap related bug where ->dma was not being cleared
after unmap
Signed-off-by: default avatarJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4f57ca6e
......@@ -4549,11 +4549,12 @@ static bool igb_clean_rx_irq_adv(struct igb_ring *rx_ring,
cleaned = true;
cleaned_count++;
/* this is the fast path for the non-packet split case */
if (!adapter->rx_ps_hdr_size) {
pci_unmap_single(pdev, buffer_info->dma,
adapter->rx_buffer_len +
NET_IP_ALIGN,
adapter->rx_buffer_len,
PCI_DMA_FROMDEVICE);
buffer_info->dma = 0;
skb_put(skb, length);
goto send_up;
}
......@@ -4570,8 +4571,9 @@ static bool igb_clean_rx_irq_adv(struct igb_ring *rx_ring,
if (!skb_shinfo(skb)->nr_frags) {
pci_unmap_single(pdev, buffer_info->dma,
adapter->rx_ps_hdr_size + NET_IP_ALIGN,
adapter->rx_ps_hdr_size,
PCI_DMA_FROMDEVICE);
buffer_info->dma = 0;
skb_put(skb, hlen);
}
......@@ -4713,7 +4715,6 @@ static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring,
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);
......@@ -4737,7 +4738,7 @@ static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring,
}
if (!buffer_info->skb) {
skb = netdev_alloc_skb(netdev, bufsz);
skb = netdev_alloc_skb(netdev, bufsz + NET_IP_ALIGN);
if (!skb) {
adapter->alloc_rx_buff_failed++;
goto no_buffers;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment