This is a note to let you know that I've just added the patch titled
net: hns3: pad the short tunnel frame before sending to hardware
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-hns3-pad-the-short-tunnel-frame-before-sending-to-hardware.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d18e81183b1cb9c309266cbbce9acd3e0c528d04 Mon Sep 17 00:00:00 2001
From: Yufeng Mo <moyufeng@xxxxxxxxxx>
Date: Mon, 13 Sep 2021 21:08:21 +0800
Subject: net: hns3: pad the short tunnel frame before sending to hardware
From: Yufeng Mo <moyufeng@xxxxxxxxxx>
commit d18e81183b1cb9c309266cbbce9acd3e0c528d04 upstream.
The hardware cannot handle short tunnel frames below 65 bytes,
and will cause vlan tag missing problem. So pads packet size to
65 bytes for tunnel frames to fix this bug.
Fixes: 3db084d28dc0("net: hns3: Fix for vxlan tx checksum bug")
Signed-off-by: Yufeng Mo <moyufeng@xxxxxxxxxx>
Signed-off-by: Guangbin Huang <huangguangbin2@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -73,6 +73,7 @@ MODULE_PARM_DESC(tx_sgl, "Minimum number
#define HNS3_OUTER_VLAN_TAG 2
#define HNS3_MIN_TX_LEN 33U
+#define HNS3_MIN_TUN_PKT_LEN 65U
/* hns3_pci_tbl - PCI Device ID Table
*
@@ -1425,8 +1426,11 @@ static int hns3_set_l2l3l4(struct sk_buf
l4.tcp->doff);
break;
case IPPROTO_UDP:
- if (hns3_tunnel_csum_bug(skb))
- return skb_checksum_help(skb);
+ if (hns3_tunnel_csum_bug(skb)) {
+ int ret = skb_put_padto(skb, HNS3_MIN_TUN_PKT_LEN);
+
+ return ret ? ret : skb_checksum_help(skb);
+ }
hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L4T_S,
Patches currently in stable-queue which might be from moyufeng@xxxxxxxxxx are
queue-5.14/net-hns3-pad-the-short-tunnel-frame-before-sending-to-hardware.patch
queue-5.14/net-hns3-disable-mac-in-flr-process.patch
queue-5.14/net-hns3-change-affinity_mask-to-numa-node-range.patch
