um: add ucast ethernet transport

The ucast transport is similar to the mcast transport (and, in fact,
shares most of its code), only it uses UDP unicast to move packets.

Obviously this is only useful for point-to-point connections between
virtual ethernet devices.

Signed-off-by: Nolan Leake <nolan@cumulusnetworks.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 120 deletions

diff --git a/arch/um/drivers/mcast_kern.c b/arch/um/drivers/mcast_kern.c
deleted file mode 100644
index ffc6416d5ed7..000000000000
--- a/arch/um/drivers/mcast_kern.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * user-mode-linux networking multicast transport
- * Copyright (C) 2001 by Harald Welte <laforge@gnumonks.org>
- * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- *
- * based on the existing uml-networking code, which is
- * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and
- * James Leu (jleu@mindspring.net).
- * Copyright (C) 2001 by various other people who didn't put their name here.
- *
- * Licensed under the GPL.
- */
-
-#include "linux/init.h"
-#include <linux/netdevice.h>
-#include "mcast.h"
-#include "net_kern.h"
-
-struct mcast_init {
-	char *addr;
-	int port;
-	int ttl;
-};
-
-static void mcast_init(struct net_device *dev, void *data)
-{
-	struct uml_net_private *pri;
-	struct mcast_data *dpri;
-	struct mcast_init *init = data;
-
-	pri = netdev_priv(dev);
-	dpri = (struct mcast_data *) pri->user;
-	dpri->addr = init->addr;
-	dpri->port = init->port;
-	dpri->ttl = init->ttl;
-	dpri->dev = dev;
-
-	printk("mcast backend multicast address: %s:%u, TTL:%u\n",
-	       dpri->addr, dpri->port, dpri->ttl);
-}
-
-static int mcast_read(int fd, struct sk_buff *skb, struct uml_net_private *lp)
-{
-	return net_recvfrom(fd, skb_mac_header(skb),
-			    skb->dev->mtu + ETH_HEADER_OTHER);
-}
-
-static int mcast_write(int fd, struct sk_buff *skb, struct uml_net_private *lp)
-{
-	return mcast_user_write(fd, skb->data, skb->len,
-				(struct mcast_data *) &lp->user);
-}
-
-static const struct net_kern_info mcast_kern_info = {
-	.init			= mcast_init,
-	.protocol		= eth_protocol,
-	.read			= mcast_read,
-	.write			= mcast_write,
-};
-
-static int mcast_setup(char *str, char **mac_out, void *data)
-{
-	struct mcast_init *init = data;
-	char *port_str = NULL, *ttl_str = NULL, *remain;
-	char *last;
-
-	*init = ((struct mcast_init)
-		{ .addr 	= "239.192.168.1",
-		  .port 	= 1102,
-		  .ttl 		= 1 });
-
-	remain = split_if_spec(str, mac_out, &init->addr, &port_str, &ttl_str,
-			       NULL);
-	if (remain != NULL) {
-		printk(KERN_ERR "mcast_setup - Extra garbage on "
-		       "specification : '%s'\n", remain);
-		return 0;
-	}
-
-	if (port_str != NULL) {
-		init->port = simple_strtoul(port_str, &last, 10);
-		if ((*last != '\0') || (last == port_str)) {
-			printk(KERN_ERR "mcast_setup - Bad port : '%s'\n",
-			       port_str);
-			return 0;
-		}
-	}
-
-	if (ttl_str != NULL) {
-		init->ttl = simple_strtoul(ttl_str, &last, 10);
-		if ((*last != '\0') || (last == ttl_str)) {
-			printk(KERN_ERR "mcast_setup - Bad ttl : '%s'\n",
-			       ttl_str);
-			return 0;
-		}
-	}
-
-	printk(KERN_INFO "Configured mcast device: %s:%u-%u\n", init->addr,
-	       init->port, init->ttl);
-
-	return 1;
-}
-
-static struct transport mcast_transport = {
-	.list 		= LIST_HEAD_INIT(mcast_transport.list),
-	.name 		= "mcast",
-	.setup  	= mcast_setup,
-	.user 		= &mcast_user_info,
-	.kern 		= &mcast_kern_info,
-	.private_size 	= sizeof(struct mcast_data),
-	.setup_size 	= sizeof(struct mcast_init),
-};
-
-static int register_mcast(void)
-{
-	register_transport(&mcast_transport);
-	return 0;
-}
-
-late_initcall(register_mcast);