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netif_add: avoid passing NULL pointers to subsequent functions (reported by Axel Lin)

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This commit is contained in:
Dirk Ziegelmeier 2017-05-05 09:07:40 +02:00
parent 9bbb741247
commit 5967380c20
1 changed files with 10 additions and 0 deletions
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10
src/core/netif.c
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@ -281,6 +281,16 @@ netif_add(struct netif *netif,
LWIP_ASSERT("No init function given", init != NULL);
if (ipaddr == NULL) {
ipaddr = ip_2_ip4(IP4_ADDR_ANY);
}
if (netmask == NULL) {
netmask = ip_2_ip4(IP4_ADDR_ANY);
}
if (gw == NULL) {
gw = ip_2_ip4(IP4_ADDR_ANY);
}
/* reset new interface configuration state */
#if LWIP_IPV4
ip_addr_set_zero_ip4(&netif->ip_addr);