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 if((pri->control = socket(AF_UNIX, SOCK_STREAM, 0)) < 0){
57 printk("daemon_open : control socket failed, errno = %d\n",
62 if(connect(pri->control, (struct sockaddr *) ctl_addr,
63 sizeof(*ctl_addr)) < 0){
64 printk("daemon_open : control connect failed, errno = %d\n",
70 if((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0){
71 printk("daemon_open : data socket failed, errno = %d\n",
76 if(bind(fd, (struct sockaddr *) local_addr, sizeof(*local_addr)) < 0){
77 printk("daemon_open : data bind failed, errno = %d\n",
83 sun = um_kmalloc(sizeof(struct sockaddr_un));
85 printk("new_addr: allocation of sockaddr_un failed\n");
90 req.magic = SWITCH_MAGIC;
91 req.version = SWITCH_VERSION;
92 req.type = REQ_NEW_CONTROL;
93 req.sock = *local_addr;
94 n = write(pri->control, &req, sizeof(req));
96 printk("daemon_open : control setup request returned %d, "
97 "errno = %d\n", n, errno);
102 n = read(pri->control, sun, sizeof(*sun));
103 if(n != sizeof(*sun)){
104 printk("daemon_open : read of data socket returned %d, "
105 "errno = %d\n", n, errno);
110 pri->data_addr = sun;
120 static void daemon_user_init(void *data, void *dev)
122 struct daemon_data *pri = data;
130 if(!strcmp(pri->sock_type, "unix"))
131 pri->ctl_addr = new_addr(pri->ctl_sock,
132 strlen(pri->ctl_sock) + 1);
134 name.pid = os_getpid();
135 gettimeofday(&tv, NULL);
136 name.usecs = tv.tv_usec;
137 pri->local_addr = new_addr(&name, sizeof(name));
139 pri->fd = connect_to_switch(pri);
141 kfree(pri->local_addr);
142 pri->local_addr = NULL;
146 static int daemon_open(void *data)
148 struct daemon_data *pri = data;
152 static void daemon_remove(void *data)
154 struct daemon_data *pri = data;
158 if(pri->data_addr != NULL) kfree(pri->data_addr);
159 if(pri->ctl_addr != NULL) kfree(pri->ctl_addr);
160 if(pri->local_addr != NULL) kfree(pri->local_addr);
163 int daemon_user_write(int fd, void *buf, int len, struct daemon_data *pri)
165 struct sockaddr_un *data_addr = pri->data_addr;
167 return(net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)));
170 static int daemon_set_mtu(int mtu, void *data)
175 struct net_user_info daemon_user_info = {
176 .init = daemon_user_init,
179 .remove = daemon_remove,
180 .set_mtu = daemon_set_mtu,
182 .delete_address = NULL,
183 .max_packet = MAX_PACKET - ETH_HEADER_OTHER
187 * Overrides for Emacs so that we follow Linus's tabbing style.
188 * Emacs will notice this stuff at the end of the file and automatically
189 * adjust the settings for this buffer only. This must remain at the end
191 * ---------------------------------------------------------------------------
193 * c-file-style: "linux"