wangchen61698 commented on code in PR #10319:
URL: https://github.com/apache/nuttx/pull/10319#discussion_r1300819608
##########
net/inet/ipv4_setsockopt.c:
##########
@@ -208,10 +208,83 @@ int ipv4_setsockopt(FAR struct socket *psock, int option,
}
break;
- /* The following IPv4 socket options are defined, but not implemented */
-
case IP_MULTICAST_IF: /* Set local device for a multicast
* socket */
+#if defined(NET_UDP_HAVE_STACK) && defined(CONFIG_NET_BINDTODEVICE)
+
+ {
+ FAR struct udp_conn_s *conn;
+ FAR struct net_driver_s *dev;
+ struct ip_mreqn mreq;
+
+ conn = psock->s_conn;
+ if (value == NULL || value_len == 0)
+ {
+ ret = -EINVAL;
+ break;
+ }
+
+ if (value_len >= sizeof(struct ip_mreqn))
+ {
+ memcpy(&mreq, value, sizeof(mreq));
+ }
+ else
+ {
+ memset(&mreq, 0, sizeof(mreq));
+ if (value_len >= sizeof(struct ip_mreq))
+ {
+ memcpy(&mreq, value, sizeof(struct ip_mreq));
+ }
+ else if (value_len >= sizeof(struct in_addr))
+ {
+ memcpy(&mreq.imr_multiaddr,
+ value, sizeof(struct in_addr));
+ }
+ }
+
+ if (!mreq.imr_ifindex)
+ {
+ if (net_ipv4addr_cmp(mreq.imr_multiaddr.s_addr, INADDR_ANY))
+ {
+ conn->mreq.imr_interface.s_addr = 0;
+ conn->mreq.imr_ifindex = 0;
+ ret = OK;
+ break;
+ }
+
+ dev = netdev_findby_lipv4addr(mreq.imr_multiaddr.s_addr);
+ if (dev)
+ {
+ mreq.imr_ifindex = dev->d_ifindex;
+ }
+ }
+ else
+ {
+ dev = netdev_findbyindex(mreq.imr_ifindex);
+ }
+
+ if (!dev)
+ {
+ ret = -EADDRNOTAVAIL;
+ break;
+ }
+
+ if (conn->sconn.s_boundto &&
Review Comment:
ditto
##########
net/inet/ipv6_setsockopt.c:
##########
@@ -103,10 +105,41 @@ int ipv6_setsockopt(FAR struct socket *psock, int option,
}
break;
- /* The following IPv6 socket options are defined, but not implemented */
-
case IPV6_MULTICAST_IF: /* Interface to use for outgoing multicast
* packets */
+#if defined(NET_UDP_HAVE_STACK) && defined(CONFIG_NET_BINDTODEVICE)
Review Comment:
ditto
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