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net/setsockopt/IP_MULTICAST_TTL: add handles of different prototypes

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Reference here:
b3298500b2/net/ipv4/ip_sockglue.c (L923-L932)

Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an 2020-12-05 18:21:18 +08:00 committed by Brennan Ashton
parent 5ad2c931a3
commit e37001f269
1 changed files with 16 additions and 14 deletions
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30
net/inet/ipv4_setsockopt.c
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@ -192,26 +192,28 @@ int ipv4_setsockopt(FAR struct socket *psock, int option,
case IP_MULTICAST_TTL: /* Set/read the time-to-live value of case IP_MULTICAST_TTL: /* Set/read the time-to-live value of
* outgoing multicast packets */ * outgoing multicast packets */
{ {
FAR struct udp_conn_s *conn;
int ttl;
if (psock->s_type != SOCK_DGRAM || if (psock->s_type != SOCK_DGRAM ||
value_len != sizeof(int)) value == NULL || value_len == 0)
{
ret = -EINVAL;
break;
}
ttl = (value_len >= sizeof(int)) ?
*(FAR int *)value : (int)*(FAR unsigned char *)value;
if (ttl <= 0 || ttl > 255)
{ {
ret = -EINVAL; ret = -EINVAL;
} }
else else
{ {
FAR struct udp_conn_s *conn; conn = (FAR struct udp_conn_s *)psock->s_conn;
int ttl = *(FAR int *)value; conn->ttl = ttl;
ret = OK;
if (ttl <= 0 || ttl > 255)
{
ret = -EINVAL;
}
else
{
conn = (FAR struct udp_conn_s *)psock->s_conn;
conn->ttl = ttl;
ret = OK;
}
} }
} }
break; break;