net: hns3: Add "FD flow table" info query function

All the Flow Director rules are stored in tcam blocks.
For each bit of tcam entry, the match value
depends on two input value(x, y).

debugfs command:
echo dump fd tcam > cmd

Sample output:
root@(none)# echo dump fd tcam > cmd
hns3 0000:7d:00.0: read result tcam key x(31):
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 08000000
hns3 0000:7d:00.0: 00000600
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: read result tcam key y(31):
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: f7ff0000
hns3 0000:7d:00.0: 0000f900
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 00000000
hns3 0000:7d:00.0: 0000fff8
root@(none)#

Signed-off-by: liuzhongzhu <liuzhongzhu@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index f32f075991f5244b1268591f9e75e92359dcdc67..a1707b77c47ff491079d1a163fb22cdbaa9e16df 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -453,6 +453,7 @@ struct hnae3_ae_ops {
                                struct ethtool_rxnfc *cmd, u32 *rule_locs);
        int (*restore_fd_rules)(struct hnae3_handle *handle);
        void (*enable_fd)(struct hnae3_handle *handle, bool enable);
+       int (*dbg_run_cmd)(struct hnae3_handle *handle, char *cmd_buf);
        pci_ers_result_t (*process_hw_error)(struct hnae3_ae_dev *ae_dev);
        bool (*get_hw_reset_stat)(struct hnae3_handle *handle);
        bool (*ae_dev_resetting)(struct hnae3_handle *handle);

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index c0685b3ef5c93be17eea3219e0e31813357f45dd..82fe7b97408f272d21085dde26d10a8310ba8375 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -200,6 +200,8 @@ static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer,
                hns3_dbg_help(handle);
        else if (strncmp(cmd_buf, "queue info", 10) == 0)
                ret = hns3_dbg_queue_info(handle, cmd_buf);
+       else if (handle->ae_algo->ops->dbg_run_cmd)
+               ret = handle->ae_algo->ops->dbg_run_cmd(handle, cmd_buf);
 
        if (ret)
                hns3_dbg_help(handle);

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile b/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile
index 580e81743681a24b8f1883265bcf03bc07148279..fffe8c1c45d394b2a0723443582d6427ffa6e387 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile
@@ -6,6 +6,6 @@
 ccflags-y := -Idrivers/net/ethernet/hisilicon/hns3
 
 obj-$(CONFIG_HNS3_HCLGE) += hclge.o
-hclge-objs = hclge_main.o hclge_cmd.o hclge_mdio.o hclge_tm.o hclge_mbx.o hclge_err.o
+hclge-objs = hclge_main.o hclge_cmd.o hclge_mdio.o hclge_tm.o hclge_mbx.o hclge_err.o  hclge_debugfs.o
 
 hclge-$(CONFIG_HNS3_DCB) += hclge_dcb.o

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
new file mode 100644 (file)
index 0000000..cf1355b
--- /dev/null
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2018-2019 Hisilicon Limited. */
+
+#include <linux/device.h>
+
+#include "hclge_cmd.h"
+#include "hclge_main.h"
+#include "hnae3.h"
+
+static void hclge_dbg_fd_tcam_read(struct hclge_dev *hdev, u8 stage,
+                                  bool sel_x, u32 loc)
+{
+       struct hclge_fd_tcam_config_1_cmd *req1;
+       struct hclge_fd_tcam_config_2_cmd *req2;
+       struct hclge_fd_tcam_config_3_cmd *req3;
+       struct hclge_desc desc[3];
+       int ret, i;
+       u32 *req;
+
+       hclge_cmd_setup_basic_desc(&desc[0], HCLGE_OPC_FD_TCAM_OP, true);
+       desc[0].flag |= cpu_to_le16(HCLGE_CMD_FLAG_NEXT);
+       hclge_cmd_setup_basic_desc(&desc[1], HCLGE_OPC_FD_TCAM_OP, true);
+       desc[1].flag |= cpu_to_le16(HCLGE_CMD_FLAG_NEXT);
+       hclge_cmd_setup_basic_desc(&desc[2], HCLGE_OPC_FD_TCAM_OP, true);
+
+       req1 = (struct hclge_fd_tcam_config_1_cmd *)desc[0].data;
+       req2 = (struct hclge_fd_tcam_config_2_cmd *)desc[1].data;
+       req3 = (struct hclge_fd_tcam_config_3_cmd *)desc[2].data;
+
+       req1->stage  = stage;
+       req1->xy_sel = sel_x ? 1 : 0;
+       req1->index  = cpu_to_le32(loc);
+
+       ret = hclge_cmd_send(&hdev->hw, desc, 3);
+       if (ret)
+               return;
+
+       dev_info(&hdev->pdev->dev, " read result tcam key %s(%u):\n",
+                sel_x ? "x" : "y", loc);
+
+       req = (u32 *)req1->tcam_data;
+       for (i = 0; i < 2; i++)
+               dev_info(&hdev->pdev->dev, "%08x\n", *req++);
+
+       req = (u32 *)req2->tcam_data;
+       for (i = 0; i < 6; i++)
+               dev_info(&hdev->pdev->dev, "%08x\n", *req++);
+
+       req = (u32 *)req3->tcam_data;
+       for (i = 0; i < 5; i++)
+               dev_info(&hdev->pdev->dev, "%08x\n", *req++);
+}
+
+static void hclge_dbg_fd_tcam(struct hclge_dev *hdev)
+{
+       u32 i;
+
+       for (i = 0; i < hdev->fd_cfg.rule_num[0]; i++) {
+               hclge_dbg_fd_tcam_read(hdev, 0, true, i);
+               hclge_dbg_fd_tcam_read(hdev, 0, false, i);
+       }
+}
+
+int hclge_dbg_run_cmd(struct hnae3_handle *handle, char *cmd_buf)
+{
+       struct hclge_vport *vport = hclge_get_vport(handle);
+       struct hclge_dev *hdev = vport->back;
+
+       if (strncmp(cmd_buf, "dump fd tcam", 12) == 0) {
+               hclge_dbg_fd_tcam(hdev);
+       } else {
+               dev_info(&hdev->pdev->dev, "unknown command\n");
+               return -EINVAL;
+       }
+
+       return 0;
+}

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index f78b8e188443f94e6726b8bacfa7fc9af5f3b084..696cb53013bcd899b330d27b0b16a6da0f13ee94 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -7826,6 +7826,7 @@ static const struct hnae3_ae_ops hclge_ops = {
        .get_fd_all_rules = hclge_get_all_rules,
        .restore_fd_rules = hclge_restore_fd_entries,
        .enable_fd = hclge_enable_fd,
+       .dbg_run_cmd = hclge_dbg_run_cmd,
        .process_hw_error = hclge_process_ras_hw_error,
        .get_hw_reset_stat = hclge_get_hw_reset_stat,
        .ae_dev_resetting = hclge_ae_dev_resetting,

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
index 5f24dd41d7eb292871170fa0a0bc5f294bc14147..4122ad1aab1fb6c18395a2a52291fa61b745713f 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -814,4 +814,5 @@ int hclge_func_reset_cmd(struct hclge_dev *hdev, int func_id);
 int hclge_vport_start(struct hclge_vport *vport);
 void hclge_vport_stop(struct hclge_vport *vport);
 int hclge_set_vport_mtu(struct hclge_vport *vport, int new_mtu);
+int hclge_dbg_run_cmd(struct hnae3_handle *handle, char *cmd_buf);
 #endif