From: Yunsheng Lin <linyunsheng@huawei.com>
Date: Sun, 18 Nov 2018 03:19:10 +0000
Subject: net: hns3: Support two vlan header when setting mtu
Patch-mainline: v5.0-rc1
Git-commit: a0b4371751bf836fb438877c981bda733f918988
References: bsc#1104353 FATE#326415
This patch adds supports for two vlan header when setting mtu.
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 5 +++--
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 2 +-
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h | 2 +-
3 files changed, 5 insertions(+), 4 deletions(-)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -3607,8 +3607,9 @@ static int hns3_client_init(struct hnae3
hns3_dcbnl_setup(handle);
- /* MTU range: (ETH_MIN_MTU(kernel default) - 9706) */
- netdev->max_mtu = HNS3_MAX_MTU - (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
+ /* MTU range: (ETH_MIN_MTU(kernel default) - 9702) */
+ netdev->max_mtu =
+ HNS3_MAX_MTU - (ETH_HLEN + ETH_FCS_LEN + 2 * VLAN_HLEN);
set_bit(HNS3_NIC_STATE_INITED, &priv->state);
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -6364,7 +6364,7 @@ static int hclge_set_mac_mtu(struct hclg
int max_frm_size;
int ret;
- max_frm_size = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
+ max_frm_size = new_mtu + ETH_HLEN + ETH_FCS_LEN + 2 * VLAN_HLEN;
if (max_frm_size < HCLGE_MAC_MIN_FRAME ||
max_frm_size > HCLGE_MAC_MAX_FRAME)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -120,7 +120,7 @@ enum HLCGE_PORT_TYPE {
#define HCLGE_VECTOR0_IMP_RESET_INT_B 1
#define HCLGE_MAC_DEFAULT_FRAME \
- (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN + ETH_DATA_LEN)
+ (ETH_HLEN + ETH_FCS_LEN + 2 * VLAN_HLEN + ETH_DATA_LEN)
#define HCLGE_MAC_MIN_FRAME 64
#define HCLGE_MAC_MAX_FRAME 9728