netbsd-help: How to find socket buffer size

Subject: How to find socket buffer size
To: None <netbsd-help@NetBSD.org>
From: Prasanta Sadhukhan <Prasanta.Sadhukhan@Sun.COM>
List: netbsd-help
Date: 12/04/2006 18:29:40

Hi,
How can I find the default maximum socket buffer size in NetBSD?
For example, in Solaris it's 64KB and can be found using
 s = open ("/dev/udp", O_RDWR);
 if (s < 0) {
 return dflt;
 }
 strncpy (buf, "udp_max_buf", sizeof(buf));
 stri.ic_cmd = ND_GET;
 stri.ic_timout = 0;
 stri.ic_dp = buf;
 stri.ic_len = sizeof(buf);
 if (ioctl (s, I_STR, &stri) < 0) {
 value = dflt;
 } else {
 value = atoi(buf);
I could not find any /dev/udp as such. Any clue?
Regards
Prasanta