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lwip: rebind UDP/TCP pcb to valid ip address when ip is changed

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This change fix the issue UDP/TCP pcb failed to rebind to correct ip address when ip is changed
This commit is contained in:
Liu Zhi Fu 2017-11-15 16:15:24 +08:00
parent b83792f504
commit 095d163050
2 changed files with 13 additions and 2 deletions
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14
components/lwip/core/netif.c
View file

@ -453,14 +453,20 @@ void
netif_set_ipaddr(struct netif *netif, const ip4_addr_t *ipaddr)
{
ip4_addr_t new_addr = (ipaddr ? *ipaddr : *IP4_ADDR_ANY);
#if ESP_LWIP
ip4_addr_t *last_addr = ip_2_ip4(&netif->last_ip_addr);
#else
ip4_addr_t *last_addr = netif_ip4_addr(netif);
#endif
/* address is actually being changed? */
if (ip4_addr_cmp(&new_addr, netif_ip4_addr(netif)) == 0) {
LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: netif address being changed\n"));
#if LWIP_TCP
tcp_netif_ipv4_addr_changed(netif_ip4_addr(netif), ipaddr);
tcp_netif_ipv4_addr_changed(last_addr, ipaddr);
#endif /* LWIP_TCP */
#if LWIP_UDP
udp_netif_ipv4_addr_changed(netif_ip4_addr(netif), ipaddr);
udp_netif_ipv4_addr_changed(last_addr, ipaddr);
#endif /* LWIP_UDP */
mib2_remove_ip4(netif);
@ -482,6 +488,10 @@ netif_set_ipaddr(struct netif *netif, const ip4_addr_t *ipaddr)
ip4_addr2_16(netif_ip4_addr(netif)),
ip4_addr3_16(netif_ip4_addr(netif)),
ip4_addr4_16(netif_ip4_addr(netif))));
if (ipaddr && !ip4_addr_isany(ipaddr)) {
ip4_addr_set(ip_2_ip4(&netif->last_ip_addr), ipaddr);
}
}
/**

1
components/lwip/include/lwip/lwip/netif.h
View file

@ -333,6 +333,7 @@ struct netif {
#if ESP_LWIP
void (*l2_buffer_free_notify)(void *user_buf); /* Allows LWIP to notify driver when a L2-supplied pbuf can be freed */
ip_addr_t last_ip_addr; /* Store last non-zero ip address */
#endif
};