2 * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and
3 * James Leu (jleu@mindspring.net).
4 * Copyright (C) 2001 by various other people who didn't put their name here.
5 * Licensed under the GPL.
11 #include <sys/socket.h>
16 #include "kern_util.h"
17 #include "user_util.h"
20 #include "um_malloc.h"
22 #define MAX_PACKET (ETH_MAX_PACKET + ETH_HEADER_OTHER)
24 enum request_type { REQ_NEW_CONTROL };
26 #define SWITCH_MAGIC 0xfeedface
31 enum request_type type;
32 struct sockaddr_un sock;
35 static struct sockaddr_un *new_addr(void *name, int len)
37 struct sockaddr_un *sun;
39 sun = um_kmalloc(sizeof(struct sockaddr_un));
41 printk("new_addr: allocation of sockaddr_un failed\n");
44 sun->sun_family = AF_UNIX;
45 memcpy(sun->sun_path, name, len);
49 static int connect_to_switch(struct daemon_data *pri)
51 struct sockaddr_un *ctl_addr = pri->ctl_addr;
52 struct sockaddr_un *local_addr = pri->local_addr;
53 struct sockaddr_un *sun;
54 struct request_v3 req;
57 pri->control = socket(AF_UNIX, SOCK_STREAM, 0);
60 printk("daemon_open : control socket failed, errno = %d\n",
65 if(connect(pri->control, (struct sockaddr *) ctl_addr,
66 sizeof(*ctl_addr)) < 0){
68 printk("daemon_open : control connect failed, errno = %d\n",
73 fd = socket(AF_UNIX, SOCK_DGRAM, 0);
76 printk("daemon_open : data socket failed, errno = %d\n",
80 if(bind(fd, (struct sockaddr *) local_addr, sizeof(*local_addr)) < 0){
82 printk("daemon_open : data bind failed, errno = %d\n",
87 sun = um_kmalloc(sizeof(struct sockaddr_un));
89 printk("new_addr: allocation of sockaddr_un failed\n");
94 req.magic = SWITCH_MAGIC;
95 req.version = SWITCH_VERSION;
96 req.type = REQ_NEW_CONTROL;
97 req.sock = *local_addr;
98 n = os_write_file(pri->control, &req, sizeof(req));
100 printk("daemon_open : control setup request failed, err = %d\n",
106 n = os_read_file(pri->control, sun, sizeof(*sun));
107 if(n != sizeof(*sun)){
108 printk("daemon_open : read of data socket failed, err = %d\n",
114 pri->data_addr = sun;
122 os_close_file(pri->control);
126 static void daemon_user_init(void *data, void *dev)
128 struct daemon_data *pri = data;
136 if(!strcmp(pri->sock_type, "unix"))
137 pri->ctl_addr = new_addr(pri->ctl_sock,
138 strlen(pri->ctl_sock) + 1);
140 name.pid = os_getpid();
141 gettimeofday(&tv, NULL);
142 name.usecs = tv.tv_usec;
143 pri->local_addr = new_addr(&name, sizeof(name));
145 pri->fd = connect_to_switch(pri);
147 kfree(pri->local_addr);
148 pri->local_addr = NULL;
152 static int daemon_open(void *data)
154 struct daemon_data *pri = data;
158 static void daemon_remove(void *data)
160 struct daemon_data *pri = data;
162 os_close_file(pri->fd);
164 os_close_file(pri->control);
167 kfree(pri->data_addr);
168 pri->data_addr = NULL;
169 kfree(pri->ctl_addr);
170 pri->ctl_addr = NULL;
171 kfree(pri->local_addr);
172 pri->local_addr = NULL;
175 int daemon_user_write(int fd, void *buf, int len, struct daemon_data *pri)
177 struct sockaddr_un *data_addr = pri->data_addr;
179 return(net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)));
182 static int daemon_set_mtu(int mtu, void *data)
187 const struct net_user_info daemon_user_info = {
188 .init = daemon_user_init,
191 .remove = daemon_remove,
192 .set_mtu = daemon_set_mtu,
194 .delete_address = NULL,
195 .max_packet = MAX_PACKET - ETH_HEADER_OTHER
199 * Overrides for Emacs so that we follow Linus's tabbing style.
200 * Emacs will notice this stuff at the end of the file and automatically
201 * adjust the settings for this buffer only. This must remain at the end
203 * ---------------------------------------------------------------------------
205 * c-file-style: "linux"