net: hns3: Fix desc num set to default when setting channel

BugLink: https://bugs.launchpad.net/bugs/1793404
When user set the channel num using "ethtool -L ethX", the desc num
of BD will set to default value, which will cause desc num set by
user lost problem.

This patch fixes it by restoring the desc num set by user when setting
channel num.

Fixes: 09f2af6405b8 ("net: hns3: add support to modify tqps number")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 128b900de7df567ca7ca063bf5da4ed0f357db8c)
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 2c309dec01f3328376db019bee3c2c92b1c3e228..81c8efb9de4a17acdb1f98e0b256601e51188a10 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -1267,35 +1267,37 @@ static int hclge_map_tqps_to_func(struct hclge_dev *hdev, u16 func_id,
        return ret;
 }
 
-static int  hclge_assign_tqp(struct hclge_vport *vport,
-                            struct hnae3_queue **tqp, u16 num_tqps)
+static int  hclge_assign_tqp(struct hclge_vport *vport)
 {
+       struct hnae3_knic_private_info *kinfo = &vport->nic.kinfo;
        struct hclge_dev *hdev = vport->back;
        int i, alloced;
 
        for (i = 0, alloced = 0; i < hdev->num_tqps &&
-            alloced < num_tqps; i++) {
+            alloced < kinfo->num_tqps; i++) {
                if (!hdev->htqp[i].alloced) {
                        hdev->htqp[i].q.handle = &vport->nic;
                        hdev->htqp[i].q.tqp_index = alloced;
-                       tqp[alloced] = &hdev->htqp[i].q;
+                       hdev->htqp[i].q.desc_num = kinfo->num_desc;
+                       kinfo->tqp[alloced] = &hdev->htqp[i].q;
                        hdev->htqp[i].alloced = true;
                        alloced++;
                }
        }
-       vport->alloc_tqps = num_tqps;
+       vport->alloc_tqps = kinfo->num_tqps;
 
        return 0;
 }
 
-static int hclge_knic_setup(struct hclge_vport *vport, u16 num_tqps)
+static int hclge_knic_setup(struct hclge_vport *vport,
+                           u16 num_tqps, u16 num_desc)
 {
        struct hnae3_handle *nic = &vport->nic;
        struct hnae3_knic_private_info *kinfo = &nic->kinfo;
        struct hclge_dev *hdev = vport->back;
        int i, ret;
 
-       kinfo->num_desc = hdev->num_desc;
+       kinfo->num_desc = num_desc;
        kinfo->rx_buf_len = hdev->rx_buf_len;
        kinfo->num_tc = min_t(u16, num_tqps, hdev->tm_info.num_tc);
        kinfo->rss_size
@@ -1322,7 +1324,7 @@ static int hclge_knic_setup(struct hclge_vport *vport, u16 num_tqps)
        if (!kinfo->tqp)
                return -ENOMEM;
 
-       ret = hclge_assign_tqp(vport, kinfo->tqp, kinfo->num_tqps);
+       ret = hclge_assign_tqp(vport);
        if (ret)
                dev_err(&hdev->pdev->dev, "fail to assign TQPs %d.\n", ret);
 
@@ -1388,7 +1390,7 @@ static int hclge_vport_setup(struct hclge_vport *vport, u16 num_tqps)
        nic->numa_node_mask = hdev->numa_node_mask;
 
        if (hdev->ae_dev->dev_type == HNAE3_DEV_KNIC) {
-               ret = hclge_knic_setup(vport, num_tqps);
+               ret = hclge_knic_setup(vport, num_tqps, hdev->num_desc);
                if (ret) {
                        dev_err(&hdev->pdev->dev, "knic setup failed %d\n",
                                ret);
@@ -5963,7 +5965,7 @@ static int hclge_set_channels(struct hnae3_handle *handle, u32 new_tqps_num)
        /* Free old tqps, and reallocate with new tqp number when nic setup */
        hclge_release_tqp(vport);
 
-       ret = hclge_knic_setup(vport, new_tqps_num);
+       ret = hclge_knic_setup(vport, new_tqps_num, kinfo->num_desc);
        if (ret) {
                dev_err(&hdev->pdev->dev, "setup nic fail, ret =%d\n", ret);
                return ret;