1 files changed, 0 insertions, 67 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0047-sdk_dpaa-update-comments-about-recycling-and-back-po.patch b/target/linux/layerscape/patches-5.4/701-net-0047-sdk_dpaa-update-comments-about-recycling-and-back-po.patch
deleted file mode 100644
index a54dce9f28..0000000000
--- a/target/linux/layerscape/patches-5.4/701-net-0047-sdk_dpaa-update-comments-about-recycling-and-back-po.patch
+++ /dev/null
@@ -1,67 +0,0 @@
-From 2d7b6e7daf076b63f461ce9c4ec6022ddc3d15bb Mon Sep 17 00:00:00 2001
-From: Camelia Groza <camelia.groza@nxp.com>
-Date: Mon, 15 Jan 2018 17:42:42 +0200
-Subject: [PATCH] sdk_dpaa: update comments about recycling and back-pointer
- storage
-
-Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
----
- drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 18 ++++++++++++++++--
- 1 file changed, 16 insertions(+), 2 deletions(-)
-
---- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
-+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
-@@ -121,6 +121,10 @@ static int _dpa_bp_add_8_bufs(const stru
- 			put_page(virt_to_head_page(new_buf));
- 			goto build_skb_failed;
- 		}
-+
-+		/* Store the skb back-pointer before the start of the buffer.
-+		 * Otherwise it will be overwritten by the FMan.
-+		 */
- 		DPA_WRITE_SKB_PTR(skb, skbh, new_buf, -1);
- 
- 		addr = dma_map_single(dev, new_buf,
-@@ -344,7 +348,10 @@ bool dpa_buf_is_recyclable(struct sk_buf
- 	 * - buffer address aligned to cacheline bytes
- 	 * - offset of data from start of buffer no lower than a minimum value
- 	 * - offset of data from start of buffer no higher than a maximum value
-+	 * - the skb back-pointer is stored safely
- 	 */
-+
-+	/* guarantee both the minimum size and the minimum data offset */
- 	new = min(skb_end_pointer(skb) - min_size, skb->data - min_offset);
- 
- 	/* left align to the nearest cacheline */
-@@ -694,6 +701,9 @@ int __hot skb_to_contig_fd(struct dpa_pr
- 		dma_dir = DMA_BIDIRECTIONAL;
- 		dma_map_size = dpa_bp->size;
- 
-+		/* Store the skb back-pointer before the start of the buffer.
-+		 * Otherwise it will be overwritten by the FMan.
-+		 */
- 		DPA_WRITE_SKB_PTR(skb, skbh, buffer_start, -1);
- 		*offset = skb_headroom(skb) - fd->offset;
- 	} else
-@@ -711,7 +721,7 @@ int __hot skb_to_contig_fd(struct dpa_pr
- 
- 		/* The buffer will be Tx-confirmed, but the TxConf cb must
- 		 * necessarily look at our Tx private data to retrieve the
--		 * skbuff. (In short: can't use DPA_WRITE_SKB_PTR() here.)
-+		 * skbuff. Store the back-pointer inside the buffer.
- 		 */
- 		DPA_WRITE_SKB_PTR(skb, skbh, buffer_start, 0);
- 	}
-@@ -975,7 +985,11 @@ int __hot skb_to_sg_fd(struct dpa_priv_s
- 	fd->length20 = skb->len;
- 	fd->offset = priv->tx_headroom;
- 
--	/* DMA map the SGT page */
-+	/* DMA map the SGT page
-+	 *
-+	 * It's safe to store the skb back-pointer inside the buffer since
-+	 * S/G frames are non-recyclable.
-+	 */
- 	DPA_WRITE_SKB_PTR(skb, skbh, sgt_buf, 0);
- 	addr = dma_map_single(dpa_bp->dev, sgt_buf,
- 			      priv->tx_headroom + sgt_size,