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lwip:optimization dhcp coarse timer
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@ -283,6 +283,14 @@ menu "LWIP"
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options and values. If your code meets LWIP_ASSERT due to option value is too long.
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Please increase the LWIP_DHCP_OPTIONS_LEN value.
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config LWIP_DHCP_COARSE_TIMER_SECS
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int "DHCP coarse timer interval(s)"
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default 1
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range 1 10
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help
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Set DHCP coarse interval in seconds.
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A higher value will be less precise but cost less power consumption.
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menu "DHCP server"
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config LWIP_DHCPS
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@ -1 +1 @@
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Subproject commit 6fa02bd30daa656f896c7a36248253fb3b97660d
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Subproject commit a7abf28e02282b32479f4bbaf2d90f09d2a60f4c
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@ -21,6 +21,11 @@
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#include "netif/dhcp_state.h"
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#include "sntp/sntp_get_set_time.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* Enable all Espressif-only options */
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/*
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@ -231,6 +236,33 @@
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*/
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#define ESP_DHCP_DISABLE_CLIENT_ID CONFIG_LWIP_DHCP_DISABLE_CLIENT_ID
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#define DHCP_DEFINE_CUSTOM_TIMEOUTS 1
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/* Since for embedded devices it's not that hard to miss a discover packet, so lower
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* the discover retry backoff time from (2,4,8,16,32,60,60)s to (500m,1,2,4,8,15,15)s.
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*/
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#define DHCP_REQUEST_TIMEOUT_SEQUENCE(state, tries) (state == DHCP_STATE_REQUESTING ? \
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(uint16_t)(1 * 1000) : \
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(uint16_t)(((tries) < 6 ? 1 << (tries) : 60) * 250))
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#define DHCP_COARSE_TIMER_SECS CONFIG_LWIP_DHCP_COARSE_TIMER_SECS
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static inline uint32_t timeout_from_offered(uint32_t lease, uint32_t min)
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{
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uint32_t timeout = lease;
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if (timeout == 0) {
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timeout = min;
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}
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timeout = (timeout + DHCP_COARSE_TIMER_SECS - 1) / DHCP_COARSE_TIMER_SECS;
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return timeout;
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}
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#define DHCP_CALC_TIMEOUT_FROM_OFFERED_T0_LEASE(dhcp) \
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timeout_from_offered((dhcp)->offered_t0_lease, 120)
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#define DHCP_CALC_TIMEOUT_FROM_OFFERED_T1_RENEW(dhcp) \
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timeout_from_offered((dhcp)->offered_t1_renew, (dhcp)->t0_timeout >> 1 /* 50% */)
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#define DHCP_CALC_TIMEOUT_FROM_OFFERED_T2_REBIND(dhcp) \
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timeout_from_offered((dhcp)->offered_t2_rebind, ((dhcp)->t0_timeout / 8) * 7 /* 87.5% */)
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/**
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* CONFIG_LWIP_DHCP_RESTORE_LAST_IP==1: Last valid IP address obtained from DHCP server
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* is restored after reset/power-up.
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@ -1111,4 +1143,8 @@
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#define SOC_SEND_LOG //printf
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#ifdef __cplusplus
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}
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#endif
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#endif /* __LWIPOPTS_H__ */
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