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hinic: fix a bug of ndo_stop

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[ Upstream commit e8a1b0efd632d1c9db7d4e93da66377c7b524862 ]

if some function in ndo_stop interface returns failure because of
hardware fault, must go on excuting rest steps rather than return
failure directly, otherwise will cause memory leak.And bump the
timeout for SET_FUNC_STATE to ensure that cmd won't return failure
when hw is busy. Otherwise hw may stomp host memory if we free
memory regardless of the return value of SET_FUNC_STATE.

Fixes: 51ba902a16 ("net-next/hinic: Initialize hw interface")
Signed-off-by: Luo bin <luobin9@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Luo bin 2020-05-10 19:01:08 +00:00 committed by Greg Kroah-Hartman
parent 791195cc82
commit 2afbedce31
2 changed files with 14 additions and 18 deletions
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16
drivers/net/ethernet/huawei/hinic/hinic_hw_mgmt.c
View file

@ -54,6 +54,8 @@
#define MGMT_MSG_TIMEOUT 5000
#define SET_FUNC_PORT_MGMT_TIMEOUT 25000
#define mgmt_to_pfhwdev(pf_mgmt) \
container_of(pf_mgmt, struct hinic_pfhwdev, pf_to_mgmt)
@ -247,12 +249,13 @@ static int msg_to_mgmt_sync(struct hinic_pf_to_mgmt *pf_to_mgmt,
u8 *buf_in, u16 in_size,
u8 *buf_out, u16 *out_size,
enum mgmt_direction_type direction,
u16 resp_msg_id)
u16 resp_msg_id, u32 timeout)
{
struct hinic_hwif *hwif = pf_to_mgmt->hwif;
struct pci_dev *pdev = hwif->pdev;
struct hinic_recv_msg *recv_msg;
struct completion *recv_done;
unsigned long timeo;
u16 msg_id;
int err;
@ -276,8 +279,9 @@ static int msg_to_mgmt_sync(struct hinic_pf_to_mgmt *pf_to_mgmt,
goto unlock_sync_msg;
}
if (!wait_for_completion_timeout(recv_done,
msecs_to_jiffies(MGMT_MSG_TIMEOUT))) {
timeo = msecs_to_jiffies(timeout ? timeout : MGMT_MSG_TIMEOUT);
if (!wait_for_completion_timeout(recv_done, timeo)) {
dev_err(&pdev->dev, "MGMT timeout, MSG id = %d\n", msg_id);
err = -ETIMEDOUT;
goto unlock_sync_msg;
@ -351,6 +355,7 @@ int hinic_msg_to_mgmt(struct hinic_pf_to_mgmt *pf_to_mgmt,
{
struct hinic_hwif *hwif = pf_to_mgmt->hwif;
struct pci_dev *pdev = hwif->pdev;
u32 timeout = 0;
if (sync != HINIC_MGMT_MSG_SYNC) {
dev_err(&pdev->dev, "Invalid MGMT msg type\n");
@ -362,9 +367,12 @@ int hinic_msg_to_mgmt(struct hinic_pf_to_mgmt *pf_to_mgmt,
return -EINVAL;
}
if (cmd == HINIC_PORT_CMD_SET_FUNC_STATE)
timeout = SET_FUNC_PORT_MGMT_TIMEOUT;
return msg_to_mgmt_sync(pf_to_mgmt, mod, cmd, buf_in, in_size,
buf_out, out_size, MGMT_DIRECT_SEND,
MSG_NOT_RESP);
MSG_NOT_RESP, timeout);
}
/**

16
drivers/net/ethernet/huawei/hinic/hinic_main.c
View file

@ -475,7 +475,6 @@ static int hinic_close(struct net_device *netdev)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
unsigned int flags;
int err;
down(&nic_dev->mgmt_lock);
@ -489,20 +488,9 @@ static int hinic_close(struct net_device *netdev)
up(&nic_dev->mgmt_lock);
err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to set func port state\n");
nic_dev->flags |= (flags & HINIC_INTF_UP);
return err;
}
hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
if (err) {
netif_err(nic_dev, drv, netdev, "Failed to set port state\n");
nic_dev->flags |= (flags & HINIC_INTF_UP);
return err;
}
hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
free_rxqs(nic_dev);
free_txqs(nic_dev);