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authorEric Dumazet <eric.dumazet@gmail.com>2011-10-18 21:00:24 +0000
committerDavid S. Miller <davem@davemloft.net>2011-10-19 03:10:46 -0400
commit9e903e085262ffbf1fc44a17ac06058aca03524a (patch)
tree4acefc97ba38c1733474d25c0b2053b56af97db1 /drivers/net/ethernet/mellanox/mlx4
parentdd767856a36e00b631d65ebc4bb81b19915532d6 (diff)
net: add skb frag size accessors
To ease skb->truesize sanitization, its better to be able to localize all references to skb frags size. Define accessors : skb_frag_size() to fetch frag size, and skb_frag_size_{set|add|sub}() to manipulate it. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/en_rx.c14
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/en_tx.c12
2 files changed, 13 insertions, 13 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index 37cc9e5c56b..46a0df9afc3 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -135,7 +135,7 @@ static void mlx4_en_init_rx_desc(struct mlx4_en_priv *priv,
/* Set size and memtype fields */
for (i = 0; i < priv->num_frags; i++) {
- skb_frags[i].size = priv->frag_info[i].frag_size;
+ skb_frag_size_set(&skb_frags[i], priv->frag_info[i].frag_size);
rx_desc->data[i].byte_count =
cpu_to_be32(priv->frag_info[i].frag_size);
rx_desc->data[i].lkey = cpu_to_be32(priv->mdev->mr.key);
@@ -194,7 +194,7 @@ static void mlx4_en_free_rx_desc(struct mlx4_en_priv *priv,
dma = be64_to_cpu(rx_desc->data[nr].addr);
en_dbg(DRV, priv, "Unmapping buffer at dma:0x%llx\n", (u64) dma);
- pci_unmap_single(mdev->pdev, dma, skb_frags[nr].size,
+ pci_unmap_single(mdev->pdev, dma, skb_frag_size(&skb_frags[nr]),
PCI_DMA_FROMDEVICE);
put_page(skb_frags[nr].page);
}
@@ -421,7 +421,7 @@ static int mlx4_en_complete_rx_desc(struct mlx4_en_priv *priv,
/* Save page reference in skb */
skb_frags_rx[nr].page = skb_frags[nr].page;
- skb_frags_rx[nr].size = skb_frags[nr].size;
+ skb_frag_size_set(&skb_frags_rx[nr], skb_frag_size(&skb_frags[nr]));
skb_frags_rx[nr].page_offset = skb_frags[nr].page_offset;
dma = be64_to_cpu(rx_desc->data[nr].addr);
@@ -430,13 +430,13 @@ static int mlx4_en_complete_rx_desc(struct mlx4_en_priv *priv,
goto fail;
/* Unmap buffer */
- pci_unmap_single(mdev->pdev, dma, skb_frags_rx[nr].size,
+ pci_unmap_single(mdev->pdev, dma, skb_frag_size(&skb_frags_rx[nr]),
PCI_DMA_FROMDEVICE);
}
/* Adjust size of last fragment to match actual length */
if (nr > 0)
- skb_frags_rx[nr - 1].size = length -
- priv->frag_info[nr - 1].frag_prefix_size;
+ skb_frag_size_set(&skb_frags_rx[nr - 1],
+ length - priv->frag_info[nr - 1].frag_prefix_size);
return nr;
fail:
@@ -506,7 +506,7 @@ static struct sk_buff *mlx4_en_rx_skb(struct mlx4_en_priv *priv,
skb_shinfo(skb)->frags[0].page_offset += HEADER_COPY_SIZE;
/* Adjust size of first fragment */
- skb_shinfo(skb)->frags[0].size -= HEADER_COPY_SIZE;
+ skb_frag_size_sub(&skb_shinfo(skb)->frags[0], HEADER_COPY_SIZE);
skb->data_len = length - HEADER_COPY_SIZE;
}
return skb;
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
index 6e03de034ac..2a192c2f207 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
@@ -226,7 +226,7 @@ static u32 mlx4_en_free_tx_desc(struct mlx4_en_priv *priv,
frag = &skb_shinfo(skb)->frags[i];
pci_unmap_page(mdev->pdev,
(dma_addr_t) be64_to_cpu(data[i].addr),
- frag->size, PCI_DMA_TODEVICE);
+ skb_frag_size(frag), PCI_DMA_TODEVICE);
}
}
/* Stamp the freed descriptor */
@@ -256,7 +256,7 @@ static u32 mlx4_en_free_tx_desc(struct mlx4_en_priv *priv,
frag = &skb_shinfo(skb)->frags[i];
pci_unmap_page(mdev->pdev,
(dma_addr_t) be64_to_cpu(data->addr),
- frag->size, PCI_DMA_TODEVICE);
+ skb_frag_size(frag), PCI_DMA_TODEVICE);
++data;
}
}
@@ -550,7 +550,7 @@ static void build_inline_wqe(struct mlx4_en_tx_desc *tx_desc, struct sk_buff *sk
skb_copy_from_linear_data(skb, inl + 1, skb_headlen(skb));
if (skb_shinfo(skb)->nr_frags)
memcpy(((void *)(inl + 1)) + skb_headlen(skb), fragptr,
- skb_shinfo(skb)->frags[0].size);
+ skb_frag_size(&skb_shinfo(skb)->frags[0]));
} else {
inl->byte_count = cpu_to_be32(1 << 31 | spc);
@@ -570,7 +570,7 @@ static void build_inline_wqe(struct mlx4_en_tx_desc *tx_desc, struct sk_buff *sk
skb_headlen(skb) - spc);
if (skb_shinfo(skb)->nr_frags)
memcpy(((void *)(inl + 1)) + skb_headlen(skb) - spc,
- fragptr, skb_shinfo(skb)->frags[0].size);
+ fragptr, skb_frag_size(&skb_shinfo(skb)->frags[0]));
}
wmb();
@@ -757,11 +757,11 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
for (i = skb_shinfo(skb)->nr_frags - 1; i >= 0; i--) {
frag = &skb_shinfo(skb)->frags[i];
dma = pci_map_page(mdev->dev->pdev, frag->page, frag->page_offset,
- frag->size, PCI_DMA_TODEVICE);
+ skb_frag_size(frag), PCI_DMA_TODEVICE);
data->addr = cpu_to_be64(dma);
data->lkey = cpu_to_be32(mdev->mr.key);
wmb();
- data->byte_count = cpu_to_be32(frag->size);
+ data->byte_count = cpu_to_be32(skb_frag_size(frag));
--data;
}