[2357] in linux-net channel archive
SOLUTION: That's what "net-pf-3" means...
daemon@ATHENA.MIT.EDU (Martin Kraemer)
Fri Apr 5 01:28:54 1996
To: linux-net@vger.rutgers.edu (Linux Network Channel)
Date: Thu, 4 Apr 1996 12:42:24 +0200 (MET DST)
From: Martin Kraemer <martin@deejai.mch.sni.de>
Hello,
I had been wondering what the "modprobe: Can't locate module net-pf-3"
meant, which appeared in recent kernel versions. In socket.c, one can find
this code snippet...
+#ifdef CONFIG_KERNELD
+ /* Attempt to load a protocol module if the find failed. */
+ if (i < 0)
+ {
+ char module_name[30];
+ sprintf(module_name,"net-pf-%d",family);
+ request_module(module_name);
+ i = find_protocol_family(family);
+ }
Now you have to interpret what pf-3, pf-4 and pf-5 are.
A search for "protocol families" finds this in <linux/socket.h>:
> /* Protocol families, same as address families. */
> #define PF_UNSPEC AF_UNSPEC
> #define PF_UNIX AF_UNIX
> #define PF_INET AF_INET
> #define PF_AX25 AF_AX25
> #define PF_IPX AF_IPX
> ...
This resolves to the following #defines in <linux/socket.h>:
> /* Supported address families. */
> #define AF_UNSPEC 0
> #define AF_UNIX 1 /* Unix domain sockets */
> #define AF_INET 2 /* Internet IP Protocol */
> #define AF_AX25 3 /* Amateur Radio AX.25 */
> #define AF_IPX 4 /* Novell IPX */
> #define AF_APPLETALK 5 /* Appletalk DDP */
> #define AF_NETROM 6 /* Amateur radio NetROM */
> #define AF_BRIDGE 7 /* Multiprotocol bridge */
> #define AF_AAL5 8 /* Reserved for Werner's ATM */
> #define AF_X25 9 /* Reserved for X.25 project */
> #define AF_INET6 10 /* IP version 6 */
> #define AF_MAX 12 /* For now.. */
Ahh.. There we are! So,...
net-pf-3 tries to create a socket (AF_AX25,..)
net-pf-4 tries to create a socket (AF_IPX,..)
net-pf-5 tries to create a socket (AF_APPLETALK,..)
It seems that ifconfig tries to open these all when it configures an
interface.
BUT: Can't it do this in a different way, in order to avoid the error
messages? I mean,
"modprobe: Can't locate module net-pf-4"
"modprobe: Can't locate module net-pf-3"
"modprobe: Can't locate module net-pf-5"
at system startup seems to imply that something is severely broken....
Martin
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