Commit 3c666b58 authored by liuzhongzhu's avatar liuzhongzhu Committed by David S. Miller
Browse files

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: default avatarliuzhongzhu <liuzhongzhu@huawei.com>
Signed-off-by: default avatarSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 57ceee2c

drivers/net/ethernet/hisilicon/hns3/hnae3.h

+1 −0
Original line number Diff line number Diff line
@@ -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);

drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c

+2 −0
Original line number Diff line number Diff line
@@ -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);

drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -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

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c

0 → 100644
+77 −0
Original line number Diff line number Diff line 
// 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;

}

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c

+1 −0
Original line number Diff line number Diff line
@@ -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,

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