[PATCH 47/75] sfc: convert to SKB paged frag API.

Ian Campbell
2011-08-19T13:29:27Z

Cc: Solarflare linux maintainers <linux-net-drivers@solarflare.com>
Cc: Steve Hodgson <shodgson@solarflare.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
drivers/net/sfc/rx.c | 2 +-
drivers/net/sfc/tx.c | 13 ++++---------
2 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/net/sfc/rx.c b/drivers/net/sfc/rx.c
index 62e4364..91a6b71 100644
--- a/drivers/net/sfc/rx.c
+++ b/drivers/net/sfc/rx.c
@@ -478,7 +478,7 @@ static void efx_rx_packet_gro(struct efx_channel *channel,
if (efx->net_dev->features & NETIF_F_RXHASH)
skb->rxhash = efx_rx_buf_hash(eh);

- skb_shinfo(skb)->frags[0].page = page;
+ skb_frag_set_page(skb, 0, page);
skb_shinfo(skb)->frags[0].page_offset =
efx_rx_buf_offset(efx, rx_buf);
skb_shinfo(skb)->frags[0].size = rx_buf->len;
diff --git a/drivers/net/sfc/tx.c b/drivers/net/sfc/tx.c
index 84eb99e..f2467a1 100644
--- a/drivers/net/sfc/tx.c
+++ b/drivers/net/sfc/tx.c
@@ -137,8 +137,6 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
struct pci_dev *pci_dev = efx->pci_dev;
struct efx_tx_buffer *buffer;
skb_frag_t *fragment;
- struct page *page;
- int page_offset;
unsigned int len, unmap_len = 0, fill_level, insert_ptr;
dma_addr_t dma_addr, unmap_addr = 0;
unsigned int dma_len;
@@ -241,13 +239,11 @@ netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
break;
fragment = &skb_shinfo(skb)->frags[i];
len = fragment->size;
- page = fragment->page;
- page_offset = fragment->page_offset;
i++;
/* Map for DMA */
unmap_single = false;
- dma_addr = pci_map_page(pci_dev, page, page_offset, len,
- PCI_DMA_TODEVICE);
+ dma_addr = skb_frag_dma_map(&pci_dev->dev, fragment, 0, len,
+ PCI_DMA_TODEVICE);
}

/* Transfer ownership of the skb to the final buffer */
@@ -929,9 +925,8 @@ static void tso_start(struct tso_state *st, const struct sk_buff *skb)
static int tso_get_fragment(struct tso_state *st, struct efx_nic *efx,
skb_frag_t *frag)
{
- st->unmap_addr = pci_map_page(efx->pci_dev, frag->page,
- frag->page_offset, frag->size,
- PCI_DMA_TODEVICE);
+ st->unmap_addr = skb_frag_dma_map(&efx->pci_dev->dev, frag, 0,
+ frag->size, PCI_DMA_TODEVICE);
if (likely(!pci_dma_mapping_error(efx->pci_dev, st->unmap_addr))) {
st->unmap_single = false;
st->unmap_len = frag->size;
--
1.7.2.5