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net/igmp: add MULTICAST_TTL support

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Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an 2020-12-03 13:53:50 +08:00 committed by Brennan Ashton
parent bce576c0bd
commit 4af687b8c2
1 changed files with 28 additions and 2 deletions
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30
net/inet/ipv4_setsockopt.c
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@ -51,6 +51,7 @@
#include "netdev/netdev.h"
#include "igmp/igmp.h"
#include "inet/inet.h"
#include "udp/udp.h"
#ifdef CONFIG_NET_IPv4
@ -184,12 +185,37 @@ int ipv4_setsockopt(FAR struct socket *psock, int option,
}
break;
case IP_MULTICAST_TTL: /* Set/read the time-to-live value of
* outgoing multicast packets */
{
if (psock->s_type != SOCK_DGRAM ||
value_len != sizeof(int))
{
ret = -EINVAL;
}
else
{
FAR struct udp_conn_s *conn;
int ttl = *(FAR int *)value;
if (ttl <= 0 || ttl > 255)
{
ret = -EINVAL;
}
else
{
conn = (FAR struct udp_conn_s *)psock->s_conn;
conn->ttl = ttl;
ret = OK;
}
}
}
break;
/* The following IPv4 socket options are defined, but not implemented */
case IP_MULTICAST_IF: /* Set local device for a multicast
* socket */
case IP_MULTICAST_TTL: /* Set/read the time-to-live value of
* outgoing multicast packets */
case IP_MULTICAST_LOOP: /* Set/read boolean that determines
* whether sent multicast packets
* should be looped back to local