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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Implementation of EFI_IP4_CONFIG2_PROTOCOL * */ #define LOG_CATEGORY LOGC_EFI #include <efi_loader.h> #include <image.h> #include <malloc.h> #include <mapmem.h> #include <net.h> static const efi_guid_t efi_ip4_config2_guid = EFI_IP4_CONFIG2_PROTOCOL_GUID; struct efi_ip4_config2_manual_address current_http_ip; static enum efi_ip4_config2_policy current_policy; static char current_mac_addr[32]; /* EFI_IP4_CONFIG2_PROTOCOL */ /* * efi_ip4_config2_set_data() - Set the configuration for the EFI IPv4 network * stack running on the communication device * * This function implements EFI_IP4_CONFIG2_PROTOCOL.SetData() * See the Unified Extensible Firmware Interface * (UEFI) specification for details. * * @this: pointer to the protocol instance * @data_type: the type of data to set * @data_size: size of the buffer pointed to by data in bytes * @data: the data buffer to set * Return: status code */ static efi_status_t EFIAPI efi_ip4_config2_set_data(struct efi_ip4_config2_protocol *this, enum efi_ip4_config2_data_type data_type, efi_uintn_t data_size, void *data) { EFI_ENTRY("%p, %d, %zu, %p", this, data_type, data_size, data); efi_status_t ret = EFI_SUCCESS; if (!this || (data && !data_size) || (!data && data_size)) return EFI_EXIT(EFI_INVALID_PARAMETER); switch (data_type) { case EFI_IP4_CONFIG2_DATA_TYPE_INTERFACEINFO: return EFI_EXIT(EFI_WRITE_PROTECTED); case EFI_IP4_CONFIG2_DATA_TYPE_MANUAL_ADDRESS: if (current_policy != EFI_IP4_CONFIG2_POLICY_STATIC) return EFI_EXIT(EFI_WRITE_PROTECTED); if (!data_size && !data) { memset((void *)¤t_http_ip, 0, sizeof(current_http_ip)); return EFI_EXIT(EFI_SUCCESS); } if (data && data_size == sizeof(struct efi_ip4_config2_manual_address)) { memcpy((void *)¤t_http_ip, data, sizeof(struct efi_ip4_config2_manual_address)); efi_net_set_addr(¤t_http_ip.address, ¤t_http_ip.subnet_mask, NULL, NULL); return EFI_EXIT(EFI_SUCCESS); } return EFI_EXIT(EFI_BAD_BUFFER_SIZE); case EFI_IP4_CONFIG2_DATA_TYPE_POLICY: if (data && data_size == sizeof(enum efi_ip4_config2_policy)) { current_policy = *(enum efi_ip4_config2_policy *)data; return EFI_EXIT(EFI_SUCCESS); } return EFI_EXIT(EFI_BAD_BUFFER_SIZE); default: return EFI_EXIT(EFI_UNSUPPORTED); } return EFI_EXIT(ret); } /* * efi_ip4_config2_get_data() - Get the configuration for the EFI IPv4 network * stack running on the communication device * * This function implements EFI_IP4_CONFIG2_PROTOCOL.GetData() * See the Unified Extensible Firmware Interface * (UEFI) specification for details. * * @this: pointer to the protocol instance * @data_type: the type of data to get * @data_size: size * @data: the data buffer * Return: status code */ static efi_status_t EFIAPI efi_ip4_config2_get_data(struct efi_ip4_config2_protocol *this, enum efi_ip4_config2_data_type data_type, efi_uintn_t *data_size, void *data) { EFI_ENTRY("%p, %d, %p, %p", this, data_type, data_size, data); efi_status_t ret = EFI_SUCCESS; struct efi_ip4_config2_interface_info *info; int tmp; if (!this || !data_size) return EFI_EXIT(EFI_INVALID_PARAMETER); if (*data_size && !data) return EFI_EXIT(EFI_INVALID_PARAMETER); tmp = sizeof(struct efi_ip4_config2_interface_info) + sizeof(struct efi_ip4_route_table); switch (data_type) { case EFI_IP4_CONFIG2_DATA_TYPE_INTERFACEINFO: if (*data_size < tmp) { *data_size = tmp; return EFI_EXIT(EFI_BUFFER_TOO_SMALL); } info = (struct efi_ip4_config2_interface_info *)data; memset(info, 0, sizeof(*info)); info->hw_address_size = 6; memcpy(info->hw_address.mac_addr, current_mac_addr, 6); // Set the route table size info->route_table_size = 0; break; case EFI_IP4_CONFIG2_DATA_TYPE_MANUAL_ADDRESS: if (*data_size < sizeof(struct efi_ip4_config2_manual_address)) { *data_size = sizeof(struct efi_ip4_config2_manual_address); return EFI_EXIT(EFI_BUFFER_TOO_SMALL); } efi_net_get_addr(¤t_http_ip.address, ¤t_http_ip.subnet_mask, NULL, NULL); memcpy(data, (void *)¤t_http_ip, sizeof(struct efi_ip4_config2_manual_address)); break; default: return EFI_EXIT(EFI_NOT_FOUND); } return EFI_EXIT(ret); } /* * efi_ip4_config2_register_notify() - Register an event that is to be signaled whenever * a configuration process on the specified configuration * data is done * * This function implements EFI_IP4_CONFIG2_PROTOCOL.RegisterDataNotify() * See the Unified Extensible Firmware Interface * (UEFI) specification for details. * * @this: pointer to the protocol instance * @data_type: the type of data to register the event for * @event: the event to register * Return: status code */ static efi_status_t EFIAPI efi_ip4_config2_register_notify(struct efi_ip4_config2_protocol *this, enum efi_ip4_config2_data_type data_type, struct efi_event *event) { EFI_ENTRY("%p, %d, %p", this, data_type, event); return EFI_EXIT(EFI_UNSUPPORTED); } /* * efi_ip4_config2_unregister_notify() - Remove a previously registered eventfor * the specified configuration data * * This function implements EFI_IP4_CONFIG2_PROTOCOL.UnregisterDataNotify() * See the Unified Extensible Firmware Interface * (UEFI) specification for details. * * @this: pointer to the protocol instance * @data_type: the type of data to remove the event for * @event: the event to unregister * Return: status code */ static efi_status_t EFIAPI efi_ip4_config2_unregister_notify(struct efi_ip4_config2_protocol *this, enum efi_ip4_config2_data_type data_type, struct efi_event *event) { EFI_ENTRY("%p, %d, %p", this, data_type, event); return EFI_EXIT(EFI_UNSUPPORTED); } /** * efi_ipconfig_register() - register the ip4_config2 protocol * */ efi_status_t efi_ipconfig_register(const efi_handle_t handle, struct efi_ip4_config2_protocol *ip4config) { efi_status_t r = EFI_SUCCESS; r = efi_add_protocol(handle, &efi_ip4_config2_guid, ip4config); if (r != EFI_SUCCESS) { log_err("ERROR: Failure to add protocol\n"); return r; } memcpy(current_mac_addr, eth_get_ethaddr(), 6); ip4config->set_data = efi_ip4_config2_set_data; ip4config->get_data = efi_ip4_config2_get_data; ip4config->register_data_notify = efi_ip4_config2_register_notify; ip4config->unregister_data_notify = efi_ip4_config2_unregister_notify; return EFI_SUCCESS; } |