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"
21 #define MAX_PACKET (ETH_MAX_PACKET + ETH_HEADER_OTHER)
23 enum request_type { REQ_NEW_CONTROL };
25 #define SWITCH_MAGIC 0xfeedface
30 enum request_type type;
31 struct sockaddr_un sock;
34 static struct sockaddr_un *new_addr(void *name, int len)
36 struct sockaddr_un *sun;
38 sun = um_kmalloc(sizeof(struct sockaddr_un));
40 printk("new_addr: allocation of sockaddr_un failed\n");
43 sun->sun_family = AF_UNIX;
44 memcpy(sun->sun_path, name, len);
48 static int connect_to_switch(struct daemon_data *pri)
50 struct sockaddr_un *ctl_addr = pri->ctl_addr;
51 struct sockaddr_un *local_addr = pri->local_addr;
52 struct sockaddr_un *sun;
53 struct request_v3 req;
56 pri->control = socket(AF_UNIX, SOCK_STREAM, 0);
58 printk("daemon_open : control socket failed, errno = %d\n",
63 if(connect(pri->control, (struct sockaddr *) ctl_addr,
64 sizeof(*ctl_addr)) < 0){
65 printk("daemon_open : control connect failed, errno = %d\n",
71 fd = socket(AF_UNIX, SOCK_DGRAM, 0);
73 printk("daemon_open : data socket failed, errno = %d\n",
78 if(bind(fd, (struct sockaddr *) local_addr, sizeof(*local_addr)) < 0){
79 printk("daemon_open : data bind failed, errno = %d\n",
85 sun = um_kmalloc(sizeof(struct sockaddr_un));
87 printk("new_addr: allocation of sockaddr_un failed\n");
92 req.magic = SWITCH_MAGIC;
93 req.version = SWITCH_VERSION;
94 req.type = REQ_NEW_CONTROL;
95 req.sock = *local_addr;
96 n = os_write_file(pri->control, &req, sizeof(req));
98 printk("daemon_open : control setup request failed, err = %d\n",
104 n = os_read_file(pri->control, sun, sizeof(*sun));
105 if(n != sizeof(*sun)){
106 printk("daemon_open : read of data socket failed, err = %d\n",
112 pri->data_addr = sun;
120 os_close_file(pri->control);
124 static void daemon_user_init(void *data, void *dev)
126 struct daemon_data *pri = data;
134 if(!strcmp(pri->sock_type, "unix"))
135 pri->ctl_addr = new_addr(pri->ctl_sock,
136 strlen(pri->ctl_sock) + 1);
138 name.pid = os_getpid();
139 gettimeofday(&tv, NULL);
140 name.usecs = tv.tv_usec;
141 pri->local_addr = new_addr(&name, sizeof(name));
143 pri->fd = connect_to_switch(pri);
145 kfree(pri->local_addr);
146 pri->local_addr = NULL;
150 static int daemon_open(void *data)
152 struct daemon_data *pri = data;
156 static void daemon_remove(void *data)
158 struct daemon_data *pri = data;
160 os_close_file(pri->fd);
162 os_close_file(pri->control);
165 kfree(pri->data_addr);
166 pri->data_addr = NULL;
167 kfree(pri->ctl_addr);
168 pri->ctl_addr = NULL;
169 kfree(pri->local_addr);
170 pri->local_addr = NULL;
173 int daemon_user_write(int fd, void *buf, int len, struct daemon_data *pri)
175 struct sockaddr_un *data_addr = pri->data_addr;
177 return(net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)));
180 static int daemon_set_mtu(int mtu, void *data)
185 const struct net_user_info daemon_user_info = {
186 .init = daemon_user_init,
189 .remove = daemon_remove,
190 .set_mtu = daemon_set_mtu,
192 .delete_address = NULL,
193 .max_packet = MAX_PACKET - ETH_HEADER_OTHER
197 * Overrides for Emacs so that we follow Linus's tabbing style.
198 * Emacs will notice this stuff at the end of the file and automatically
199 * adjust the settings for this buffer only. This must remain at the end
201 * ---------------------------------------------------------------------------
203 * c-file-style: "linux"