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bna: Embed SKB Length in TX Vector

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- Store the length of the skb buffer mapped along with the handle and use it
   while unmapping the buffer.

Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rasesh Mody 2013-12-17 17:07:40 -08:00 committed by David S. Miller
parent f29eeb79ac
commit 24f5d33d42
2 changed files with 5 additions and 2 deletions
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6
drivers/net/ethernet/brocade/bna/bnad.c
View file

@ -142,7 +142,8 @@ bnad_tx_buff_unmap(struct bnad *bnad,
dma_unmap_page(&bnad->pcidev->dev,
dma_unmap_addr(&unmap->vectors[vector], dma_addr),
skb_shinfo(skb)->frags[nvecs].size, DMA_TO_DEVICE);
dma_unmap_len(&unmap->vectors[vector], dma_len),
DMA_TO_DEVICE);
dma_unmap_addr_set(&unmap->vectors[vector], dma_addr, 0);
nvecs--;
}
@ -3045,7 +3046,7 @@ bnad_start_xmit(struct sk_buff *skb, struct net_device *netdev)
for (i = 0, vect_id = 0; i < vectors - 1; i++) {
const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
u16 size = skb_frag_size(frag);
u32 size = skb_frag_size(frag);
if (unlikely(size == 0)) {
/* Undo the changes starting at tcb->producer_index */
@ -3070,6 +3071,7 @@ bnad_start_xmit(struct sk_buff *skb, struct net_device *netdev)
dma_addr = skb_frag_dma_map(&bnad->pcidev->dev, frag,
0, size, DMA_TO_DEVICE);
unmap->vectors[vect_id].dma_len = size;
BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[vect_id].host_addr);
txqent->vector[vect_id].length = htons(size);
dma_unmap_addr_set(&unmap->vectors[vect_id], dma_addr,

1
drivers/net/ethernet/brocade/bna/bnad.h
View file

@ -222,6 +222,7 @@ struct bnad_rx_info {
struct bnad_tx_vector {
DEFINE_DMA_UNMAP_ADDR(dma_addr);
DEFINE_DMA_UNMAP_LEN(dma_len);
};
struct bnad_tx_unmap {