| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | From 7c96998ebc8cc9c71216b80de3f77114f29b148a Mon Sep 17 00:00:00 2001 |
| 2 | From: Camelia Groza <camelia.groza@nxp.com> |
| 3 | Date: Mon, 17 Sep 2018 12:39:24 +0300 |
| 4 | Subject: [PATCH] sdk_dpaa: ls1043a errata: align skb_shinfo |
| 5 | |
| 6 | Make sure the skb shared info is cache-line aligned when realigning |
| 7 | egress frames. |
| 8 | |
| 9 | Signed-off-by: Camelia Groza <camelia.groza@nxp.com> |
| 10 | --- |
| 11 | drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 4 +++- |
| 12 | 1 file changed, 3 insertions(+), 1 deletion(-) |
| 13 | |
| 14 | --- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c |
| 15 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c |
| 16 | @@ -830,8 +830,10 @@ static struct sk_buff *a010022_realign_s |
| 17 | |
| 18 | /* For the new skb we only need the old one's data (both non-paged and |
| 19 | * paged). We can skip the old tailroom. |
| 20 | + * |
| 21 | + * Make sure the skb_shinfo is cache-line aligned. |
| 22 | */ |
| 23 | - nsize = headroom + skb->len + |
| 24 | + nsize = SMP_CACHE_BYTES + DPA_SKB_SIZE(headroom + skb->len) + |
| 25 | SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); |
| 26 | |
| 27 | /* Reserve enough memory to accommodate Jumbo frames */ |