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Add netconn_join_leave_group_netif() that takes netif index as argument

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This commit is contained in:
Dirk Ziegelmeier
2017-08-21 09:42:57 +02:00
parent d0e0afb46a
commit f457769fe8
4 changed files with 107 additions and 0 deletions
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42
src/api/api_lib.c
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@@ -1129,6 +1129,48 @@ netconn_join_leave_group(struct netconn *conn,
return err;
}
/**
* @ingroup netconn_udp
* Join multicast groups for UDP netconns.
*
* @param conn the UDP netconn for which to change multicast addresses
* @param multiaddr IP address of the multicast group to join or leave
* @param if_idx the index of the netif
* @param join_or_leave flag whether to send a join- or leave-message
* @return ERR_OK if the action was taken, any err_t on error
*/
err_t
netconn_join_leave_group_netif(struct netconn *conn,
const ip_addr_t *multiaddr,
u8_t if_idx,
enum netconn_igmp join_or_leave)
{
API_MSG_VAR_DECLARE(msg);
err_t err;
LWIP_ERROR("netconn_join_leave_group: invalid conn", (conn != NULL), return ERR_ARG;);
API_MSG_VAR_ALLOC(msg);
#if LWIP_IPV4
/* Don't propagate NULL pointer (IP_ADDR_ANY alias) to subsequent functions */
if (multiaddr == NULL) {
multiaddr = IP4_ADDR_ANY;
}
if (if_idx == NETIF_NO_INDEX) {
return ERR_IF;
}
#endif /* LWIP_IPV4 */
API_MSG_VAR_REF(msg).conn = conn;
API_MSG_VAR_REF(msg).msg.jl.multiaddr = API_MSG_VAR_REF(multiaddr);
API_MSG_VAR_REF(msg).msg.jl.if_idx = if_idx;
API_MSG_VAR_REF(msg).msg.jl.join_or_leave = join_or_leave;
err = netconn_apimsg(lwip_netconn_do_join_leave_group_netif, &API_MSG_VAR_REF(msg));
API_MSG_VAR_FREE(msg);
return err;
}
#endif /* LWIP_IGMP || (LWIP_IPV6 && LWIP_IPV6_MLD) */
#if LWIP_DNS