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

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Message-ID: <1313760467-8598-47-git-send-email-ian.campbell@citrix.com>
Date:	Fri, 19 Aug 2011 14:27:19 +0100
From:	Ian Campbell <ian.campbell@...rix.com>
To:	netdev@...r.kernel.org
CC:	linux-kernel@...r.kernel.org,
	Ian Campbell <ian.campbell@...rix.com>,
	Solarflare linux maintainers <linux-net-drivers@...arflare.com>,
	Steve Hodgson <shodgson@...arflare.com>,
	Ben Hutchings <bhutchings@...arflare.com>
Subject: [PATCH 47/75] sfc: convert to SKB paged frag API.

Signed-off-by: Ian Campbell <ian.campbell@...rix.com>
Cc: Solarflare linux maintainers <linux-net-drivers@...arflare.com>
Cc: Steve Hodgson <shodgson@...arflare.com>
Cc: Ben Hutchings <bhutchings@...arflare.com>
Cc: netdev@...r.kernel.org
Cc: linux-kernel@...r.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

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