lwip/dhcp: add configure for enable vendor class identify option

Closes https://github.com/espressif/esp-idf/issues/6786

components/esp_netif/include/esp_netif_types.h

@@ -79,6 +79,8 @@ typedef enum{
     ESP_NETIF_REQUESTED_IP_ADDRESS          = 50,   /**< Request specific IP address */
     ESP_NETIF_IP_ADDRESS_LEASE_TIME         = 51,   /**< Request IP address lease time */
     ESP_NETIF_IP_REQUEST_RETRY_TIME         = 52,   /**< Request IP address retry counter */
+    ESP_NETIF_VENDOR_CLASS_IDENTIFIER       = 60,   /**< Vendor Class Identifier of a DHCP client */
+    ESP_NETIF_VENDOR_SPECIFIC_INFO          = 43,   /**< Vendor Specific Information of a DHCP server */
 } esp_netif_dhcp_option_id_t;
 
 /** IP event declarations */

components/esp_netif/lwip/esp_netif_lwip.c

@@ -1,16 +1,8 @@
-// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
+/*
-//
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
-// Licensed under the Apache License, Version 2.0 (the "License");
+ *
-// you may not use this file except in compliance with the License.
+ * SPDX-License-Identifier: Apache-2.0
-// You may obtain a copy of the License at
+ */
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 #include <string.h>
 #include <lwip/ip_addr.h>
@@ -1889,9 +1881,12 @@ esp_err_t esp_netif_dhcpc_option(esp_netif_t *esp_netif, esp_netif_dhcp_option_m
                     *(uint8_t *)opt_val = dhcp->tries;
                 }
                 break;
+#if ESP_DHCP && !ESP_DHCP_DISABLE_VENDOR_CLASS_IDENTIFIER
+            case ESP_NETIF_VENDOR_SPECIFIC_INFO:
+                return dhcp_get_vendor_specific_information(opt_len, opt_val);
+#endif
             default:
                 return ESP_ERR_ESP_NETIF_INVALID_PARAMS;
-                break;
         }
     } else if (opt_op == ESP_NETIF_OP_SET) {
         if (esp_netif->dhcpc_status == ESP_NETIF_DHCP_STARTED) {
@@ -1903,9 +1898,12 @@ esp_err_t esp_netif_dhcpc_option(esp_netif_t *esp_netif, esp_netif_dhcp_option_m
                     dhcp->tries = *(uint8_t *)opt_val;
                 }
                 break;
+#if ESP_DHCP && !ESP_DHCP_DISABLE_VENDOR_CLASS_IDENTIFIER
+            case ESP_NETIF_VENDOR_CLASS_IDENTIFIER:
+                return dhcp_set_vendor_class_identifier(opt_len, opt_val);
+#endif
             default:
                 return ESP_ERR_ESP_NETIF_INVALID_PARAMS;
-                break;
         }
     } else {
         return ESP_ERR_ESP_NETIF_INVALID_PARAMS;

components/lwip/Kconfig

@@ -258,6 +258,13 @@ menu "LWIP"
             in the DHCP packets as an option 61)
             Set this option to "y" in order to exclude option 61 from DHCP packets.
 
+    config LWIP_DHCP_DISABLE_VENDOR_CLASS_ID
+        bool "DHCP: Disable Use of vendor class identification"
+        default y
+        help
+            This option could be used to disable DHCP client vendor class identification.
+            Set this option to "y" in order to exclude option 60 from DHCP packets.
+
     config LWIP_DHCP_RESTORE_LAST_IP
         bool "DHCP: Restore last IP obtained from DHCP server"
         default n

components/lwip/port/esp32/include/lwipopts.h

@@ -1,34 +1,11 @@
 /*
- * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
+ * SPDX-FileCopyrightText: 2001-2003 Swedish Institute of Computer Science
- * All rights reserved.
  *
- * Redistribution and use in source and binary forms, with or without modification,
+ * SPDX-License-Identifier: BSD-3-Clause
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
- * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * This file is part of the lwIP TCP/IP stack.
- *
- * Author: Simon Goldschmidt
  *
+ * SPDX-FileContributor: 2015-2021 Espressif Systems (Shanghai) CO LTD
  */
+
 #ifndef __LWIPOPTS_H__
 #define __LWIPOPTS_H__
 
@@ -272,6 +249,11 @@
  */
 #define DHCP_OPTIONS_LEN                CONFIG_LWIP_DHCP_OPTIONS_LEN
 
+/**
+ * LWIP_DHCP_DISABLE_VENDOR_CLASS_ID==1: Do not add option 60 (Vendor Class Identifier) to DHCP packets
+ */
+#define ESP_DHCP_DISABLE_VENDOR_CLASS_IDENTIFIER       CONFIG_LWIP_DHCP_DISABLE_VENDOR_CLASS_ID
+
 /*
    ------------------------------------
    ---------- AUTOIP options ----------