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task #10495: Added support for IP_MULTICAST_LOOP at socket- and raw-API level.

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This commit is contained in:
goldsimon
2010-07-12 09:34:11 +00:00
parent 714a43b18c
commit 691410ba18
6 changed files with 60 additions and 4 deletions
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7
src/core/ipv4/ip.c
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@@ -710,13 +710,18 @@ err_t ip_output_if_opt(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
LWIP_DEBUGF(IP_DEBUG, ("netif_loop_output()"));
return netif_loop_output(netif, p, dest);
}
#if LWIP_IGMP
if ((p->flags & PBUF_FLAG_MCASTLOOP) != 0) {
netif_loop_output(netif, p, dest);
}
#endif /* LWIP_IGMP */
#endif /* ENABLE_LOOPBACK */
#if IP_FRAG
/* don't fragment if interface has mtu set to 0 [loopif] */
if (netif->mtu && (p->tot_len > netif->mtu)) {
return ip_frag(p, netif, dest);
}
#endif
#endif /* IP_FRAG */
LWIP_DEBUGF(IP_DEBUG, ("netif->output()"));
return netif->output(netif, p, dest);

12
src/core/udp.c
View File

@@ -540,6 +540,14 @@ udp_sendto_if_chksum(struct udp_pcb *pcb, struct pbuf *p, ip_addr_t *dst_ip,
/* in UDP, 0 checksum means 'no checksum' */
udphdr->chksum = 0x0000;
/* Multicast Loop? */
#if LWIP_IGMP
if (ip_addr_ismulticast(dst_ip) && ((pcb->flags & UDP_FLAGS_MULTICAST_LOOP) != 0)) {
q->flags |= PBUF_FLAG_MCASTLOOP;
}
#endif /* LWIP_IGMP */
/* PCB local address is IP_ANY_ADDR? */
if (ip_addr_isany(&pcb->local_ip)) {
/* use outgoing network interface IP address as source address */
@@ -927,6 +935,10 @@ udp_new(void)
/* initialize PCB to all zeroes */
memset(pcb, 0, sizeof(struct udp_pcb));
pcb->ttl = UDP_TTL;
#if LWIP_IGMP
/* multicast loopback shall be turned on by default */
pcb->flags = PBUF_FLAG_MCASTLOOP;
#endif /* LWIP_IGMP */
}
return pcb;
}