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dhcp: restart dhcp after releasing.

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There were uses of dhcp_release() followed immediately by dhcp_discover() but
dhcp_release() now stops dhcp so discovery would fail, so call dhcp_start()
after release which restarts discovery.

Signed-off-by: Dirk Ziegelmeier <dirk@ziegelmeier.net>
This commit is contained in:
Our Air Quality 2017-07-28 12:30:43 +10:00 committed by Dirk Ziegelmeier
parent 925f3944d3
commit ff03ae6f55
1 changed files with 5 additions and 5 deletions
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10
src/core/ipv4/dhcp.c
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@ -431,8 +431,8 @@ dhcp_coarse_tmr(void)
if (dhcp->t0_timeout && (++dhcp->lease_used == dhcp->t0_timeout)) {
LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_coarse_tmr(): t0 timeout\n"));
/* this clients' lease time has expired */
dhcp_release(netif);
dhcp_discover(netif);
dhcp_release_and_stop(netif);
dhcp_start(netif);
/* timer is active (non zero), and triggers (zeroes) now? */
} else if (dhcp->t2_rebind_time && (dhcp->t2_rebind_time-- == 1)) {
LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_coarse_tmr(): t2 timeout\n"));
@ -504,8 +504,8 @@ dhcp_timeout(struct netif *netif)
dhcp_select(netif);
} else {
LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_timeout(): REQUESTING, releasing, restarting\n"));
dhcp_release(netif);
dhcp_discover(netif);
dhcp_release_and_stop(netif);
dhcp_start(netif);
}
#if DHCP_DOES_ARP_CHECK
/* received no ARP reply for the offered address (which is good) */
@ -790,7 +790,7 @@ dhcp_start(struct netif *netif)
result = dhcp_discover(netif);
if (result != ERR_OK) {
/* free resources allocated above */
dhcp_stop(netif);
dhcp_release_and_stop(netif);
return ERR_MEM;
}
return result;