| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <1595329434-46766-5-git-send-email-tanhuazhong@huawei.com>
Date: Tue, 21 Jul 2020 19:03:54 +0800
From: Huazhong Tan <tanhuazhong@...wei.com>
To: <davem@...emloft.net>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<salil.mehta@...wei.com>, <yisen.zhuang@...wei.com>,
<linuxarm@...wei.com>, <kuba@...nel.org>,
Jian Shen <shenjian15@...wei.com>,
Huazhong tan <tanhuazhong@...wei.com>
Subject: [PATCH net 4/4] net: hns3: fix return value error when query MAC link status fail
From: Jian Shen <shenjian15@...wei.com>
Currently, PF queries the MAC link status per second by calling
function hclge_get_mac_link_status(). It return the error code
when failed to send cmdq command to firmware. It's incorrect,
because this return value is used as the MAC link status, which
0 means link down, and none-zero means link up. So fixes it.
Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Jian Shen <shenjian15@...wei.com>
Signed-off-by: Huazhong tan <tanhuazhong@...wei.com>
---
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 49 ++++++++++------------
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.h | 3 ++
2 files changed, 25 insertions(+), 27 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index d6bfdc6..bb4a632 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -2673,11 +2673,10 @@ void hclge_task_schedule(struct hclge_dev *hdev, unsigned long delay_time)
delay_time);
}
-static int hclge_get_mac_link_status(struct hclge_dev *hdev)
+static int hclge_get_mac_link_status(struct hclge_dev *hdev, int *link_status)
{
struct hclge_link_status_cmd *req;
struct hclge_desc desc;
- int link_status;
int ret;
hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_QUERY_LINK_STATUS, true);
@@ -2689,33 +2688,25 @@ static int hclge_get_mac_link_status(struct hclge_dev *hdev)
}
req = (struct hclge_link_status_cmd *)desc.data;
- link_status = req->status & HCLGE_LINK_STATUS_UP_M;
+ *link_status = (req->status & HCLGE_LINK_STATUS_UP_M) > 0 ?
+ HCLGE_LINK_STATUS_UP : HCLGE_LINK_STATUS_DOWN;
- return !!link_status;
+ return 0;
}
-static int hclge_get_mac_phy_link(struct hclge_dev *hdev)
+static int hclge_get_mac_phy_link(struct hclge_dev *hdev, int *link_status)
{
- unsigned int mac_state;
- int link_stat;
+ struct phy_device *phydev = hdev->hw.mac.phydev;
+
+ *link_status = HCLGE_LINK_STATUS_DOWN;
if (test_bit(HCLGE_STATE_DOWN, &hdev->state))
return 0;
- mac_state = hclge_get_mac_link_status(hdev);
-
- if (hdev->hw.mac.phydev) {
- if (hdev->hw.mac.phydev->state == PHY_RUNNING)
- link_stat = mac_state &
- hdev->hw.mac.phydev->link;
- else
- link_stat = 0;
-
- } else {
- link_stat = mac_state;
- }
+ if (phydev && (phydev->state != PHY_RUNNING || !phydev->link))
+ return 0;
- return !!link_stat;
+ return hclge_get_mac_link_status(hdev, link_status);
}
static void hclge_update_link_status(struct hclge_dev *hdev)
@@ -2725,6 +2716,7 @@ static void hclge_update_link_status(struct hclge_dev *hdev)
struct hnae3_handle *rhandle;
struct hnae3_handle *handle;
int state;
+ int ret;
int i;
if (!client)
@@ -2733,7 +2725,12 @@ static void hclge_update_link_status(struct hclge_dev *hdev)
if (test_and_set_bit(HCLGE_STATE_LINK_UPDATING, &hdev->state))
return;
- state = hclge_get_mac_phy_link(hdev);
+ ret = hclge_get_mac_phy_link(hdev, &state);
+ if (ret) {
+ clear_bit(HCLGE_STATE_LINK_UPDATING, &hdev->state);
+ return;
+ }
+
if (state != hdev->hw.mac.link) {
for (i = 0; i < hdev->num_vmdq_vport + 1; i++) {
handle = &hdev->vport[i].nic;
@@ -6524,14 +6521,15 @@ static int hclge_mac_link_status_wait(struct hclge_dev *hdev, int link_ret)
{
#define HCLGE_MAC_LINK_STATUS_NUM 100
+ int link_status;
int i = 0;
int ret;
do {
- ret = hclge_get_mac_link_status(hdev);
- if (ret < 0)
+ ret = hclge_get_mac_link_status(hdev, &link_status);
+ if (ret)
return ret;
- else if (ret == link_ret)
+ if (link_status == link_ret)
return 0;
msleep(HCLGE_LINK_STATUS_MS);
@@ -6542,9 +6540,6 @@ static int hclge_mac_link_status_wait(struct hclge_dev *hdev, int link_ret)
static int hclge_mac_phy_link_status_wait(struct hclge_dev *hdev, bool en,
bool is_phy)
{
-#define HCLGE_LINK_STATUS_DOWN 0
-#define HCLGE_LINK_STATUS_UP 1
-
int link_ret;
link_ret = en ? HCLGE_LINK_STATUS_UP : HCLGE_LINK_STATUS_DOWN;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
index 46e6e0f..9bbdd45 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -317,6 +317,9 @@ enum hclge_link_fail_code {
HCLGE_LF_XSFP_ABSENT,
};
+#define HCLGE_LINK_STATUS_DOWN 0
+#define HCLGE_LINK_STATUS_UP 1
+
#define HCLGE_PG_NUM 4
#define HCLGE_SCH_MODE_SP 0
#define HCLGE_SCH_MODE_DWRR 1
--
2.7.4
Powered by blists - more mailing lists