From 64e91fafc2a7412a27747b302c846bbc5f64fb6d Mon Sep 17 00:00:00 2001 From: Yunsheng Lin Date: Wed, 23 Jan 2019 07:39:38 +0800 Subject: [PATCH] net: hns3: fix PFC not setting problem for DCB module [ Upstream commit d3ad430ac531e65f29c9737f86744c425c9173ef ] The PFC enabling is based on user priority, currently it is based on TC, which may cause PFC not setting correctly when pri to TC mapping is not one to one relation. This patch adds pfc_en in tm_info to fix it. Fixes: cacde272dd00 ("net: hns3: Add hclge_dcb module for the support of DCB feature") Signed-off-by: Yunsheng Lin Signed-off-by: Peng Li Signed-off-by: Huazhong Tan Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c | 7 ++++--- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h | 1 + drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 2 +- 3 files changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c index 92f19384e258..a75d7c826fc2 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c @@ -245,6 +245,9 @@ static int hclge_ieee_setpfc(struct hnae3_handle *h, struct ieee_pfc *pfc) hdev->flag & HCLGE_FLAG_MQPRIO_ENABLE) return -EINVAL; + if (pfc->pfc_en == hdev->tm_info.pfc_en) + return 0; + prio_tc = hdev->tm_info.prio_tc; pfc_map = 0; @@ -257,10 +260,8 @@ static int hclge_ieee_setpfc(struct hnae3_handle *h, struct ieee_pfc *pfc) } } - if (pfc_map == hdev->tm_info.hw_pfc_map) - return 0; - hdev->tm_info.hw_pfc_map = pfc_map; + hdev->tm_info.pfc_en = pfc->pfc_en; return hclge_pause_setup_hw(hdev); } diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h index 1528fb3fa6be..260b1e779690 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h @@ -249,6 +249,7 @@ struct hclge_tm_info { struct hclge_tc_info tc_info[HNAE3_MAX_TC]; enum hclge_fc_mode fc_mode; u8 hw_pfc_map; /* Allow for packet drop or not on this TC */ + u8 pfc_en; /* PFC enabled or not for user priority */ }; struct hclge_comm_stats_str { diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c index 0d45d045706c..3180ae452889 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c @@ -1162,7 +1162,7 @@ static int hclge_pfc_setup_hw(struct hclge_dev *hdev) HCLGE_RX_MAC_PAUSE_EN_MSK; return hclge_pfc_pause_en_cfg(hdev, enable_bitmap, - hdev->tm_info.hw_pfc_map); + hdev->tm_info.pfc_en); } /* Each Tc has a 1024 queue sets to backpress, it divides to -- GitLab