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Added clearing of ipv6 addresses to lwip bringdown function #3193

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Merged
merged 1 commit into from
Nov 29, 2016
Merged

Added clearing of ipv6 addresses to lwip bringdown function #3193

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42 changes: 30 additions & 12 deletions features/FEATURE_LWIP/lwip-interface/lwip_stack.c
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Original file line number Diff line number Diff line change
Expand Up @@ -293,16 +293,20 @@ static void mbed_lwip_netif_status_irq(struct netif *lwip_netif)
{
static bool any_addr = true;

// Indicates that has address
if (any_addr == true && mbed_lwip_get_ip_addr(true, lwip_netif)) {
sys_sem_signal(&lwip_netif_has_addr);
any_addr = false;
return;
}
if (netif_is_up(lwip_netif)) {
// Indicates that has address
if (any_addr == true && mbed_lwip_get_ip_addr(true, lwip_netif)) {
sys_sem_signal(&lwip_netif_has_addr);
any_addr = false;
return;
}

// Indicates that has preferred address
if (mbed_lwip_get_ip_addr(false, lwip_netif)) {
sys_sem_signal(&lwip_netif_has_addr);
// Indicates that has preferred address
if (mbed_lwip_get_ip_addr(false, lwip_netif)) {
sys_sem_signal(&lwip_netif_has_addr);
}
} else {
any_addr = true;
}
}

Expand Down Expand Up @@ -509,6 +513,15 @@ nsapi_error_t mbed_lwip_bringup(bool dhcp, const char *ip, const char *netmask,
return 0;
}

#if LWIP_IPV6
void mbed_lwip_clear_ipv6_addresses(struct netif *lwip_netif)
{
for (u8_t i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) {
netif_ip6_addr_set_state(lwip_netif, i, IP6_ADDR_INVALID);
}
}
#endif

nsapi_error_t mbed_lwip_bringdown(void)
{
// Check if we've connected
Expand All @@ -522,13 +535,18 @@ nsapi_error_t mbed_lwip_bringdown(void)
dhcp_release(&lwip_netif);
dhcp_stop(&lwip_netif);
lwip_dhcp = false;
} else {
netif_set_down(&lwip_netif);
}
#endif

netif_set_down(&lwip_netif);

#if LWIP_IPV6
mbed_lwip_clear_ipv6_addresses(&lwip_netif);
#endif

sys_sem_free(&lwip_netif_has_addr);
sys_sem_new(&lwip_netif_has_addr, 0);
lwip_connected = false;
// TO DO - actually remove addresses from stack, and shut down properly
return 0;
}

Expand Down