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Fix ip4 loopback when LWIP_SINGLE_NETIF si used

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When LWIP_SINGLE_NETIF is used, LWIP_NETIF_LOOPBACK case is not managed at all in the ip4_route() function.
Consequently any ip4 loopback packet is rejected.

This adds the required code to fix this.
This commit is contained in:
Benjamin 2024-09-09 16:18:00 +02:00 committed by GitHub
parent 73fcf72792
commit 9ea624a249
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1 changed files with 13 additions and 0 deletions
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13
src/core/ipv4/ip4.c
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@ -211,6 +211,19 @@ ip4_route(const ip4_addr_t *dest)
return netif;
}
#endif
#else
#if LWIP_NETIF_LOOPBACK
/* in single netif mode, loopback traffic should be passed through default netif (if defined and up) */
if (ip4_addr_isloopback(dest)) {
/* don't check for link on loopback traffic */
if ((netif_default != NULL) && netif_is_up(netif_default)) {
return netif_default;
}
return NULL;
}
#endif /* LWIP_NETIF_LOOPBACK */
#endif /* !LWIP_SINGLE_NETIF */
if ((netif_default == NULL) || !netif_is_up(netif_default) || !netif_is_link_up(netif_default) ||