net: hns3: add debug information for flow table when failed

Adds some debug information for failures of processing flow table,
removes the redundant printing when hclge_fd_check_spec() returns
error, and modifies the printing level for FD not enable error.

Signed-off-by: Guojia Liao <liaoguojia@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 635aec2..0618f22 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -5381,22 +5381,32 @@ static int hclge_fd_check_ext_tuple(struct hclge_dev *hdev,
                                    u32 *unused_tuple)
 {
        if (fs->flow_type & FLOW_EXT) {
-               if (fs->h_ext.vlan_etype)
+               if (fs->h_ext.vlan_etype) {
+                       dev_err(&hdev->pdev->dev, "vlan-etype is not supported!\n");
                        return -EOPNOTSUPP;
+               }
+
                if (!fs->h_ext.vlan_tci)
                        *unused_tuple |= BIT(INNER_VLAN_TAG_FST);
 
                if (fs->m_ext.vlan_tci &&
-                   be16_to_cpu(fs->h_ext.vlan_tci) >= VLAN_N_VID)
+                   be16_to_cpu(fs->h_ext.vlan_tci) >= VLAN_N_VID) {
+                       dev_err(&hdev->pdev->dev,
+                               "failed to config vlan_tci, invalid vlan_tci: %u, max is %u.\n",
+                               ntohs(fs->h_ext.vlan_tci), VLAN_N_VID - 1);
                        return -EINVAL;
+               }
        } else {
                *unused_tuple |= BIT(INNER_VLAN_TAG_FST);
        }
 
        if (fs->flow_type & FLOW_MAC_EXT) {
                if (hdev->fd_cfg.fd_mode !=
-                   HCLGE_FD_MODE_DEPTH_2K_WIDTH_400B_STAGE_1)
+                   HCLGE_FD_MODE_DEPTH_2K_WIDTH_400B_STAGE_1) {
+                       dev_err(&hdev->pdev->dev,
+                               "FLOW_MAC_EXT is not supported in current fd mode!\n");
                        return -EOPNOTSUPP;
+               }
 
                if (is_zero_ether_addr(fs->h_ext.h_dest))
                        *unused_tuple |= BIT(INNER_DST_MAC);
@@ -5414,8 +5424,13 @@ static int hclge_fd_check_spec(struct hclge_dev *hdev,
        u32 flow_type;
        int ret;
 
-       if (fs->location >= hdev->fd_cfg.rule_num[HCLGE_FD_STAGE_1])
+       if (fs->location >= hdev->fd_cfg.rule_num[HCLGE_FD_STAGE_1]) {
+               dev_err(&hdev->pdev->dev,
+                       "failed to config fd rules, invalid rule location: %u, max is %u\n.",
+                       fs->location,
+                       hdev->fd_cfg.rule_num[HCLGE_FD_STAGE_1] - 1);
                return -EINVAL;
+       }
 
        if ((fs->flow_type & FLOW_EXT) &&
            (fs->h_ext.data[0] != 0 || fs->h_ext.data[1] != 0)) {
@@ -5457,11 +5472,18 @@ static int hclge_fd_check_spec(struct hclge_dev *hdev,
                                                 unused_tuple);
                break;
        default:
+               dev_err(&hdev->pdev->dev,
+                       "unsupported protocol type, protocol type = %#x\n",
+                       flow_type);
                return -EOPNOTSUPP;
        }
 
-       if (ret)
+       if (ret) {
+               dev_err(&hdev->pdev->dev,
+                       "failed to check flow union tuple, ret = %d\n",
+                       ret);
                return ret;
+       }
 
        return hclge_fd_check_ext_tuple(hdev, fs, unused_tuple);
 }
@@ -5729,22 +5751,23 @@ static int hclge_add_fd_entry(struct hnae3_handle *handle,
        u8 action;
        int ret;
 
-       if (!hnae3_dev_fd_supported(hdev))
+       if (!hnae3_dev_fd_supported(hdev)) {
+               dev_err(&hdev->pdev->dev,
+                       "flow table director is not supported\n");
                return -EOPNOTSUPP;
+       }
 
        if (!hdev->fd_en) {
-               dev_warn(&hdev->pdev->dev,
-                        "Please enable flow director first\n");
+               dev_err(&hdev->pdev->dev,
+                       "please enable flow director first\n");
                return -EOPNOTSUPP;
        }
 
        fs = (struct ethtool_rx_flow_spec *)&cmd->fs;
 
        ret = hclge_fd_check_spec(hdev, fs, &unused);
-       if (ret) {
-               dev_err(&hdev->pdev->dev, "Check fd spec failed\n");
+       if (ret)
                return ret;
-       }
 
        if (fs->ring_cookie == RX_CLS_FLOW_DISC) {
                action = HCLGE_FD_ACTION_DROP_PACKET;