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lwip: optimize dhcp renew/rebind timer

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This commit is contained in:
Liu Zhi Fu 2017-03-14 21:26:27 +08:00
parent a9ed6d5a24
commit a8f9d99cae
1 changed files with 13 additions and 8 deletions
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21
components/lwip/core/ipv4/dhcp.c
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@ -539,6 +539,8 @@ static void
dhcp_t1_timeout(struct netif *netif)
{
struct dhcp *dhcp = netif->dhcp;
int half_t2_timeout;
LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_STATE, ("dhcp_t1_timeout()\n"));
if ((dhcp->state == DHCP_STATE_REQUESTING) || (dhcp->state == DHCP_STATE_BOUND) ||
(dhcp->state == DHCP_STATE_RENEWING)) {
@ -550,15 +552,16 @@ dhcp_t1_timeout(struct netif *netif)
DHCP_STATE_RENEWING, not DHCP_STATE_BOUND */
dhcp_renew(netif);
/* Calculate next timeout */
half_t2_timeout = (netif->dhcp->t2_timeout - dhcp->lease_used) / 2;
#if ESP_DHCP_TIMER
if (((netif->dhcp->t2_timeout - dhcp->lease_used) / 2) >= (60 + DHCP_COARSE_TIMER_SECS / 2) )
if (half_t2_timeout*DHCP_COARSE_TIMER_SECS >= 3)
{
netif->dhcp->t1_renew_time = (netif->dhcp->t2_timeout - dhcp->lease_used) / 2;
netif->dhcp->t1_renew_time = half_t2_timeout;
}
#else
if (((netif->dhcp->t2_timeout - dhcp->lease_used) / 2) >= ((60 + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS))
if (half_t2_timeout >= ((60 + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS))
{
netif->dhcp->t1_renew_time = ((netif->dhcp->t2_timeout - dhcp->lease_used) / 2);
netif->dhcp->t1_renew_time = half_t2_timeout;
}
#endif
}
@ -573,6 +576,7 @@ static void
dhcp_t2_timeout(struct netif *netif)
{
struct dhcp *dhcp = netif->dhcp;
int half_t0_timeout;
LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_t2_timeout()\n"));
if ((dhcp->state == DHCP_STATE_REQUESTING) || (dhcp->state == DHCP_STATE_BOUND) ||
(dhcp->state == DHCP_STATE_RENEWING) || (dhcp->state == DHCP_STATE_REBINDING)) {
@ -583,15 +587,16 @@ dhcp_t2_timeout(struct netif *netif)
DHCP_STATE_REBINDING, not DHCP_STATE_BOUND */
dhcp_rebind(netif);
/* Calculate next timeout */
half_t0_timeout = (netif->dhcp->t0_timeout - dhcp->lease_used) / 2;
#if ESP_DHCP_TIMER
if (((netif->dhcp->t0_timeout - dhcp->lease_used) / 2) >= (60 + DHCP_COARSE_TIMER_SECS / 2))
if (half_t0_timeout*DHCP_COARSE_TIMER_SECS >= 3)
{
netif->dhcp->t2_rebind_time = ((netif->dhcp->t0_timeout - dhcp->lease_used) / 2);
netif->dhcp->t2_rebind_time = half_t0_timeout;
}
#else
if (((netif->dhcp->t0_timeout - dhcp->lease_used) / 2) >= ((60 + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS))
if (half_t0_timeout >= ((60 + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS))
{
netif->dhcp->t2_rebind_time = ((netif->dhcp->t0_timeout - dhcp->lease_used) / 2);
netif->dhcp->t2_rebind_time = half_t0_timeout;
}
#endif
}