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Merge branch 'bugfix/tw23835_add_source_ip_route_for_unicast_v3.0' into 'release/v3.0'

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lwip: add source ip based route for unicast packet (backport v3.0)

See merge request idf/esp-idf!2781
This commit is contained in:
Jiang Jiang Jian
2018-07-17 14:12:13 +08:00
parent 8bc76b3684 41b1db4dc6
commit 0669fe8f02
1 changed files with 2 additions and 4 deletions
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6
components/lwip/core/ipv4/ip4.c
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@ -133,16 +133,14 @@ bool ip4_netif_exist(const ip4_addr_t *src, const ip4_addr_t *dest)
return false;
}
/**
* Source based IPv4 routing hook function. This function works only
* when destination IP is broadcast IP.
* Source based IPv4 routing hook function.
*/
struct netif *
ip4_route_src_hook(const ip4_addr_t *dest, const ip4_addr_t *src)
{
struct netif *netif = NULL;
/* destination IP is broadcast IP? */
if ((src != NULL) && (dest->addr == IPADDR_BROADCAST)) {
if ((src != NULL) && !ip4_addr_isany(src)) {
/* iterate through netifs */
for (netif = netif_list; netif != NULL; netif = netif->next) {
/* is the netif up, does it have a link and a valid address? */