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62 lines
2.9 KiB
C
62 lines
2.9 KiB
C
/*
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* Copyright (c) Espressif Systems (Shanghai) CO LTD
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* To use these additional DHCP options, make sure this file is included in LWIP_HOOK_FILENAME
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* and define these hooks:
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*
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* #define LWIP_HOOK_DHCP_PARSE_OPTION(netif, dhcp, state, msg, msg_type, option, len, pbuf, offset) \
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* do { LWIP_UNUSED_ARG(msg); \
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* dhcp_parse_extra_opts(dhcp, state, option, len, pbuf, offset); \
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* } while(0)
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*
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* #define LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, state, msg, msg_type, options_len_ptr) \
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* dhcp_append_extra_opts(netif, state, msg, options_len_ptr);
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*
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* To enable (disable) these option, please set one or both of the below macros to 1 (0)
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* #define LWIP_DHCP_ENABLE_MTU_UPDATE 1
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* #define LWIP_DHCP_ENABLE_CLIENT_ID 1
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*/
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#ifndef LWIP_HDR_CONTRIB_ADDONS_DHCP_OPTS_H
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#define LWIP_HDR_CONTRIB_ADDONS_DHCP_OPTS_H
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/* Add standard integers so the header could be included before lwip */
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#include <stdint.h>
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/* Forward declare lwip structs */
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struct dhcp;
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struct pbuf;
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struct dhcp;
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struct netif;
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struct dhcp_msg;
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/* Internal hook functions */
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void dhcp_parse_extra_opts(struct dhcp *dhcp, uint8_t state, uint8_t option, uint8_t len, struct pbuf* p, uint16_t offset);
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void dhcp_append_extra_opts(struct netif *netif, uint8_t state, struct dhcp_msg *msg_out, uint16_t *options_out_len);
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#endif /* LWIP_HDR_CONTRIB_ADDONS_DHCP_OPTS_H */
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