Commit f9c29387 authored by Haibin Lu's avatar Haibin Lu Committed by Fengyan
Browse files

UNIC: add support for querying and configuring the function guid 

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I850RQ


CVE: NA

---------------------------------------------------

In UB mode, there is no MAC address. Therefore, each function requires a
guid as the identity ID, and each function needs to be configured with a
guid during initialization. This patch supports the initialization and
configuration of the function guid. The guid is unique and comes from
imp or random.

Signed-off-by: default avatarFengyan Mu <mufengyan@hisilicon.com>
Signed-off-by: default avatarHaibin Lu <luhaibin10@hisilicon.com>
Signed-off-by: default avatarHaiqing Fang <fanghaiqing@huawei.com>
Signed-off-by: default avatarJunxin Chen <chenjunxin1@huawei.com>
parent 17bd48f8

drivers/net/ethernet/hisilicon/hns3/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ obj-$(CONFIG_HNS3_HCLGEVF) += hclgevf.o 
hclgevf-objs = hns3vf/hclgevf_main.o hns3vf/hclgevf_mbx.o  hns3vf/hclgevf_devlink.o hns3vf/hclgevf_regs.o \

		hns3_common/hclge_comm_cmd.o hns3_common/hclge_comm_rss.o hns3_common/hclge_comm_tqp_stats.o \

		hns3vf/hclgevf_udma.o

hclgevf-$(CONFIG_HNS3_UBL) += hns3_common/hclge_comm_unic_addr.o hns3vf/hclgevf_unic_guid.o



obj-$(CONFIG_HNS3_HCLGE) += hclge.o

hclge-objs = hns3pf/hclge_main.o hns3pf/hclge_mdio.o hns3pf/hclge_tm.o hns3pf/hclge_sysfs.o hns3pf/hclge_regs.o \
@@ -31,4 +32,5 @@ hclge-objs = hns3pf/hclge_main.o hns3pf/hclge_mdio.o hns3pf/hclge_tm.o hns3pf/hc 
		hns3pf/hclge_udma.o

hclge-objs += hns3pf/hclge_ext.o



hclge-$(CONFIG_HNS3_UBL) += hns3_common/hclge_comm_unic_addr.o hns3pf/hclge_unic_guid.o

hclge-$(CONFIG_HNS3_DCB) += hns3pf/hclge_dcb.o

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

+3 −0
Original line number Diff line number Diff line
@@ -427,6 +427,7 @@ struct hnae3_dev_specs { 
	u16 mc_mac_size;

	u32 mac_stats_num;

	u8 tnl_num;

	u16 guid_tbl_space;

};



struct hnae3_client_ops {
@@ -826,6 +827,8 @@ struct hnae3_ae_ops { 
		       struct ethtool_wolinfo *wol);

	int (*priv_ops)(struct hnae3_handle *handle, int opcode,

			void *data, size_t length);

	int (*get_func_guid)(struct hnae3_handle *handle, u8 *guid);

	int (*set_func_guid)(struct hnae3_handle *handle, u8 *guid);

};



struct hnae3_dcb_ops {

drivers/net/ethernet/hisilicon/hns3/hns3_common/hclge_comm_cmd.h

+4 −0
Original line number Diff line number Diff line
@@ -310,6 +310,10 @@ enum hclge_opcode_type { 


	/* Query link diagnosis info command */

	HCLGE_OPC_QUERY_LINK_DIAGNOSIS	= 0x702A,



	/* UB commands */

	HCLGE_OPC_COMM_GET_FUNC_GUID	= 0xA001,

	HCLGE_OPC_COMM_CFG_FUNC_GUID	= 0xA122,

};



enum hclge_comm_cmd_return_status {

drivers/net/ethernet/hisilicon/hns3/hns3_common/hclge_comm_unic_addr.c

0 → 100644
+112 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0+

/* Copyright (c) 2023-2023 Hisilicon Limited.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * for more details.

 *

 */



#include "hclge_comm_unic_addr.h"



static void

hclge_comm_unic_func_guid_cmd_prepare(u8 *guid,

				      struct hclge_comm_func_guid_cmd *req)

{

	req->entry_vld = HCLGE_COMM_FUNC_GUID_ENTRY_VALID_EN;

	memcpy(req->guid, guid, UBL_ALEN);

}



int hclge_comm_unic_set_func_guid(struct hclge_comm_hw *hw, u8 *guid)

{

	struct hclge_comm_func_guid_cmd *req;

	struct hclge_desc desc;

	int ret;



	req = (struct hclge_comm_func_guid_cmd *)desc.data;



	hclge_comm_cmd_setup_basic_desc(&desc, HCLGE_OPC_COMM_CFG_FUNC_GUID,

					false);

	hclge_comm_unic_func_guid_cmd_prepare(guid, req);



	ret = hclge_comm_cmd_send(hw, &desc, 1);

	if (ret)

		dev_err(&hw->cmq.csq.pdev->dev,

			"failed to set guid for cmd_send, ret = %d\n", ret);



	return ret;

}



void hclge_comm_unic_rm_func_guid(struct hclge_comm_hw *hw)

{

	struct hclge_comm_func_guid_cmd *req;

	struct hclge_desc desc;

	int ret;



	req = (struct hclge_comm_func_guid_cmd *)desc.data;



	hclge_comm_cmd_setup_basic_desc(&desc, HCLGE_OPC_COMM_CFG_FUNC_GUID,

					false);

	req->entry_vld = 0;

	ret = hclge_comm_cmd_send(hw, &desc, 1);

	if (ret)

		dev_warn(&hw->cmq.csq.pdev->dev,

			 "failed to delete func guid for cmd_send, ret = %d.\n",

			 ret);

}



static bool hclge_comm_unic_is_valid_func_guid(u8 *guid)

{

	u8 invalid_guid_zero[UBL_ALEN] = {0};

	u8 invalid_guid_all_one[UBL_ALEN];



	memset(invalid_guid_all_one, 0xff, UBL_ALEN);

	if (!(memcmp(guid, invalid_guid_all_one, HCLGE_COMM_MGUID_PREFIX_LEN) &&

	      memcmp(guid, invalid_guid_zero, UBL_ALEN)))

		return false;



	return true;

}



static void hclge_comm_unic_guid_le_to_net_trans(u8 *src_guid, u8 *dest_guid)

{

	int i;



	for (i = 0; i < UBL_ALEN; i++)

		dest_guid[i] = src_guid[UBL_ALEN - i - 1];

}



int hclge_comm_unic_get_func_guid(struct hclge_comm_hw *hw, u8 *guid)

{

	struct hclge_desc desc;

	bool is_random = false;

	int ret;



	hclge_comm_cmd_setup_basic_desc(&desc, HCLGE_OPC_COMM_GET_FUNC_GUID,

					true);

	ret = hclge_comm_cmd_send(hw, &desc, 1);

	if (ret) {

		dev_err(&hw->cmq.csq.pdev->dev,

			"failed to get function GUID, ret = %d\n", ret);

		return ret;

	}



	hclge_comm_unic_guid_le_to_net_trans((u8 *)desc.data, guid);

	while (unlikely(!hclge_comm_unic_is_valid_func_guid(guid))) {

		get_random_bytes(guid, UBL_ALEN);

		is_random = true;

	}



	if (unlikely(is_random))

		dev_warn(&hw->cmq.csq.pdev->dev,

			 "using random GUID %02x:%02x:...:%02x:%02x\n",

			 guid[0], guid[1],

			 guid[UBL_ALEN - 2], guid[UBL_ALEN - 1]);



	return 0;

}

drivers/net/ethernet/hisilicon/hns3/hns3_common/hclge_comm_unic_addr.h

0 → 100644
+43 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0+ */

/* Copyright (c) 2023-2023 Hisilicon Limited.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * for more details.

 *

 */



#ifndef __HCLGE_COMM_UNIC_ADDR_H

#define __HCLGE_COMM_UNIC_ADDR_H



#include <linux/types.h>



#include "ubl.h"

#include "hclge_comm_cmd.h"



#define HCLGE_COMM_MGUID_PREFIX_LEN		14



#define HCLGE_COMM_FUNC_GUID_ENTRY_VALID_EN	0x01



struct hclge_comm_func_guid_cmd {

	u8 entry_vld	 : 1;

	u8 lookup_enable : 1;

	u8 rsv0		 : 6;

	u8 rsv1;

	__le16 rsv2;

	/* use big endian here */

	u8 guid[UBL_ALEN];

	__le16 hit_info;

	__le16 rsv3;

};



int hclge_comm_unic_set_func_guid(struct hclge_comm_hw *hw, u8 *guid);

int hclge_comm_unic_get_func_guid(struct hclge_comm_hw *hw, u8 *guid);

void hclge_comm_unic_rm_func_guid(struct hclge_comm_hw *hw);



#endif