2 * Copyright (C) 2007 Luca Bigliardi (shammash@artha.org).
3 * Licensed under the GPL.
6 * ethN=vde,<vde_switch>,<mac addr>,<port>,<group>,<mode>,<description>
10 #include "linux/kernel.h"
11 #include "linux/init.h"
12 #include "linux/netdevice.h"
13 #include "linux/etherdevice.h"
18 static void vde_init(struct net_device *dev, void *data)
20 struct vde_init *init = data;
21 struct uml_net_private *pri;
22 struct vde_data *vpri;
25 vpri = (struct vde_data *) pri->user;
27 vpri->vde_switch = init->vde_switch;
28 vpri->descr = init->descr ? init->descr : "UML vde_transport";
33 printk(KERN_INFO "vde backend - %s, ", vpri->vde_switch ?
34 vpri->vde_switch : "(default socket)");
36 vde_init_libstuff(vpri, init);
38 printk(KERN_INFO "\n");
41 static int vde_read(int fd, struct sk_buff **skb, struct uml_net_private *lp)
43 struct vde_data *pri = (struct vde_data *) &lp->user;
45 if (pri->conn != NULL) {
46 *skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER);
50 return vde_user_read(pri->conn, skb_mac_header(*skb),
51 (*skb)->dev->mtu + ETH_HEADER_OTHER);
54 printk(KERN_ERR "vde_read - we have no VDECONN to read from");
58 static int vde_write(int fd, struct sk_buff **skb, struct uml_net_private *lp)
60 struct vde_data *pri = (struct vde_data *) &lp->user;
62 if (pri->conn != NULL)
63 return vde_user_write((void *)pri->conn, (*skb)->data,
66 printk(KERN_ERR "vde_write - we have no VDECONN to write to");
70 static const struct net_kern_info vde_kern_info = {
72 .protocol = eth_protocol,
77 static int vde_setup(char *str, char **mac_out, void *data)
79 struct vde_init *init = data;
80 char *remain, *port_str = NULL, *mode_str = NULL, *last;
82 *init = ((struct vde_init)
89 remain = split_if_spec(str, &init->vde_switch, mac_out, &port_str,
90 &init->group, &mode_str, &init->descr, NULL);
93 printk(KERN_WARNING "vde_setup - Ignoring extra data :"
96 if (port_str != NULL) {
97 init->port = simple_strtoul(port_str, &last, 10);
98 if ((*last != '\0') || (last == port_str)) {
99 printk(KERN_ERR "vde_setup - Bad port : '%s'\n",
105 if (mode_str != NULL) {
106 init->mode = simple_strtoul(mode_str, &last, 8);
107 if ((*last != '\0') || (last == mode_str)) {
108 printk(KERN_ERR "vde_setup - Bad mode : '%s'\n",
114 printk(KERN_INFO "Configured vde device: %s\n", init->vde_switch ?
115 init->vde_switch : "(default socket)");
120 static struct transport vde_transport = {
121 .list = LIST_HEAD_INIT(vde_transport.list),
124 .user = &vde_user_info,
125 .kern = &vde_kern_info,
126 .private_size = sizeof(struct vde_data),
127 .setup_size = sizeof(struct vde_init),
130 static int register_vde(void)
132 register_transport(&vde_transport);
136 late_initcall(register_vde);