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feat(lwip): dhcp server add support for dhcp inform

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wangtao@espressif.com
2026-05-26 10:54:22 +08:00
parent e4dfea92cb
commit bbd612e9f7
2 changed files with 126 additions and 10 deletions
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components/lwip/include/apps/dhcpserver/dhcpserver.h
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@@ -61,6 +61,7 @@ typedef enum
* - MAX_STATION_NUM: Maximum number of clients, set to Kconfig value CONFIG_LWIP_DHCPS_MAX_STATION_NUM
* - LWIP_HOOK_DHCPS_POST_STATE: Used to inject user code after parsing DHCP message, not defined
* - could be enabled in lwipopts.h or via CC_FLAGS
* - parse states include DHCPS_STATE_OFFER (1), ACK (3), NAK (4), INFORM_ACK (7), etc.
* - basic usage of the hook to print hex representation of the entire option field is below:
* #define LWIP_HOOK_DHCPS_POST_STATE(msg, len, state) \
* ({ s16_t ret = state; if (state == DHCPS_STATE_ACK) { ESP_LOG_BUFFER_HEXDUMP("DHCPS",msg->options, 312, ESP_LOG_INFO);} ret; })