This is a note to let you know that I've just added the patch titled
net: hns3: fix add VLAN fail issue
to the 5.15-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-fix-add-vlan-fail-issue.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 5e9c42355906b46605dc0e9b74ed098de3e19a4c
Author: Jian Shen <shenjian15@xxxxxxxxxx>
Date: Fri Nov 10 17:37:07 2023 +0800
net: hns3: fix add VLAN fail issue
[ Upstream commit 472a2ff63efb30234cbf6b2cdaf8117f21b4f8bc ]
The hclge_sync_vlan_filter is called in periodic task,
trying to remove VLAN from vlan_del_fail_bmap. It can
be concurrence with VLAN adding operation from user.
So once user failed to delete a VLAN id, and add it
again soon, it may be removed by the periodic task,
which may cause the software configuration being
inconsistent with hardware. So add mutex handling
to avoid this.
user hns3 driver
periodic task
│
add vlan 10 ───── hns3_vlan_rx_add_vid │
│ (suppose success) │
│ │
del vlan 10 ───── hns3_vlan_rx_kill_vid │
│ (suppose fail,add to │
│ vlan_del_fail_bmap) │
│ │
add vlan 10 ───── hns3_vlan_rx_add_vid │
(suppose success) │
foreach vlan_del_fail_bmp
del vlan 10
Fixes: fe4144d47eef ("net: hns3: sync VLAN filter entries when kill VLAN ID failed")
Signed-off-by: Jian Shen <shenjian15@xxxxxxxxxx>
Signed-off-by: Jijie Shao <shaojijie@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index ca59e1cd992e5..dba3cf15b48e1 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -10196,8 +10196,6 @@ static void hclge_rm_vport_vlan_table(struct hclge_vport *vport, u16 vlan_id,
struct hclge_vport_vlan_cfg *vlan, *tmp;
struct hclge_dev *hdev = vport->back;
- mutex_lock(&hdev->vport_lock);
-
list_for_each_entry_safe(vlan, tmp, &vport->vlan_list, node) {
if (vlan->vlan_id == vlan_id) {
if (is_write_tbl && vlan->hd_tbl_status)
@@ -10212,8 +10210,6 @@ static void hclge_rm_vport_vlan_table(struct hclge_vport *vport, u16 vlan_id,
break;
}
}
-
- mutex_unlock(&hdev->vport_lock);
}
void hclge_rm_vport_all_vlan_table(struct hclge_vport *vport, bool is_del_list)
@@ -10618,11 +10614,16 @@ int hclge_set_vlan_filter(struct hnae3_handle *handle, __be16 proto,
* handle mailbox. Just record the vlan id, and remove it after
* reset finished.
*/
+ mutex_lock(&hdev->vport_lock);
if ((test_bit(HCLGE_STATE_RST_HANDLING, &hdev->state) ||
test_bit(HCLGE_STATE_RST_FAIL, &hdev->state)) && is_kill) {
set_bit(vlan_id, vport->vlan_del_fail_bmap);
+ mutex_unlock(&hdev->vport_lock);
return -EBUSY;
+ } else if (!is_kill && test_bit(vlan_id, vport->vlan_del_fail_bmap)) {
+ clear_bit(vlan_id, vport->vlan_del_fail_bmap);
}
+ mutex_unlock(&hdev->vport_lock);
/* when port base vlan enabled, we use port base vlan as the vlan
* filter entry. In this case, we don't update vlan filter table
@@ -10637,17 +10638,22 @@ int hclge_set_vlan_filter(struct hnae3_handle *handle, __be16 proto,
}
if (!ret) {
- if (!is_kill)
+ if (!is_kill) {
hclge_add_vport_vlan_table(vport, vlan_id,
writen_to_tbl);
- else if (is_kill && vlan_id != 0)
+ } else if (is_kill && vlan_id != 0) {
+ mutex_lock(&hdev->vport_lock);
hclge_rm_vport_vlan_table(vport, vlan_id, false);
+ mutex_unlock(&hdev->vport_lock);
+ }
} else if (is_kill) {
/* when remove hw vlan filter failed, record the vlan id,
* and try to remove it from hw later, to be consistence
* with stack
*/
+ mutex_lock(&hdev->vport_lock);
set_bit(vlan_id, vport->vlan_del_fail_bmap);
+ mutex_unlock(&hdev->vport_lock);
}
hclge_set_vport_vlan_fltr_change(vport);
@@ -10687,6 +10693,7 @@ static void hclge_sync_vlan_filter(struct hclge_dev *hdev)
int i, ret, sync_cnt = 0;
u16 vlan_id;
+ mutex_lock(&hdev->vport_lock);
/* start from vport 1 for PF is always alive */
for (i = 0; i < hdev->num_alloc_vport; i++) {
struct hclge_vport *vport = &hdev->vport[i];
@@ -10697,21 +10704,26 @@ static void hclge_sync_vlan_filter(struct hclge_dev *hdev)
ret = hclge_set_vlan_filter_hw(hdev, htons(ETH_P_8021Q),
vport->vport_id, vlan_id,
true);
- if (ret && ret != -EINVAL)
+ if (ret && ret != -EINVAL) {
+ mutex_unlock(&hdev->vport_lock);
return;
+ }
clear_bit(vlan_id, vport->vlan_del_fail_bmap);
hclge_rm_vport_vlan_table(vport, vlan_id, false);
hclge_set_vport_vlan_fltr_change(vport);
sync_cnt++;
- if (sync_cnt >= HCLGE_MAX_SYNC_COUNT)
+ if (sync_cnt >= HCLGE_MAX_SYNC_COUNT) {
+ mutex_unlock(&hdev->vport_lock);
return;
+ }
vlan_id = find_first_bit(vport->vlan_del_fail_bmap,
VLAN_N_VID);
}
}
+ mutex_unlock(&hdev->vport_lock);
hclge_sync_vlan_fltr_state(hdev);
}
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index bc140e3620d6c..8adc682f624f9 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -1710,6 +1710,8 @@ static int hclgevf_set_vlan_filter(struct hnae3_handle *handle,
test_bit(HCLGEVF_STATE_RST_FAIL, &hdev->state)) && is_kill) {
set_bit(vlan_id, hdev->vlan_del_fail_bmap);
return -EBUSY;
+ } else if (!is_kill && test_bit(vlan_id, hdev->vlan_del_fail_bmap)) {
+ clear_bit(vlan_id, hdev->vlan_del_fail_bmap);
}
hclgevf_build_send_msg(&send_msg, HCLGE_MBX_SET_VLAN,
@@ -1737,20 +1739,25 @@ static void hclgevf_sync_vlan_filter(struct hclgevf_dev *hdev)
int ret, sync_cnt = 0;
u16 vlan_id;
+ if (bitmap_empty(hdev->vlan_del_fail_bmap, VLAN_N_VID))
+ return;
+
+ rtnl_lock();
vlan_id = find_first_bit(hdev->vlan_del_fail_bmap, VLAN_N_VID);
while (vlan_id != VLAN_N_VID) {
ret = hclgevf_set_vlan_filter(handle, htons(ETH_P_8021Q),
vlan_id, true);
if (ret)
- return;
+ break;
clear_bit(vlan_id, hdev->vlan_del_fail_bmap);
sync_cnt++;
if (sync_cnt >= HCLGEVF_MAX_SYNC_COUNT)
- return;
+ break;
vlan_id = find_first_bit(hdev->vlan_del_fail_bmap, VLAN_N_VID);
}
+ rtnl_unlock();
}
static int hclgevf_en_hw_strip_rxvtag(struct hnae3_handle *handle, bool enable)
