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"
19 #include "um_malloc.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 = kmalloc(sizeof(struct sockaddr_un), UM_GFP_KERNEL);
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);
59 printk("daemon_open : control socket failed, errno = %d\n",
64 if(connect(pri->control, (struct sockaddr *) ctl_addr,
65 sizeof(*ctl_addr)) < 0){
67 printk("daemon_open : control connect failed, errno = %d\n",
72 fd = socket(AF_UNIX, SOCK_DGRAM, 0);
75 printk("daemon_open : data socket failed, errno = %d\n",
79 if(bind(fd, (struct sockaddr *) local_addr, sizeof(*local_addr)) < 0){
81 printk("daemon_open : data bind failed, errno = %d\n",
86 sun = kmalloc(sizeof(struct sockaddr_un), UM_GFP_KERNEL);
88 printk("new_addr: allocation of sockaddr_un failed\n");
93 req.magic = SWITCH_MAGIC;
94 req.version = SWITCH_VERSION;
95 req.type = REQ_NEW_CONTROL;
96 req.sock = *local_addr;
97 n = os_write_file(pri->control, &req, sizeof(req));
99 printk("daemon_open : control setup request failed, err = %d\n",
105 n = os_read_file(pri->control, sun, sizeof(*sun));
106 if(n != sizeof(*sun)){
107 printk("daemon_open : read of data socket failed, err = %d\n",
113 pri->data_addr = sun;
121 os_close_file(pri->control);
125 static int daemon_user_init(void *data, void *dev)
127 struct daemon_data *pri = data;
135 if(!strcmp(pri->sock_type, "unix"))
136 pri->ctl_addr = new_addr(pri->ctl_sock,
137 strlen(pri->ctl_sock) + 1);
139 name.pid = os_getpid();
140 gettimeofday(&tv, NULL);
141 name.usecs = tv.tv_usec;
142 pri->local_addr = new_addr(&name, sizeof(name));
144 pri->fd = connect_to_switch(pri);
146 kfree(pri->local_addr);
147 pri->local_addr = NULL;
154 static int daemon_open(void *data)
156 struct daemon_data *pri = data;
160 static void daemon_remove(void *data)
162 struct daemon_data *pri = data;
164 os_close_file(pri->fd);
166 os_close_file(pri->control);
169 kfree(pri->data_addr);
170 pri->data_addr = NULL;
171 kfree(pri->ctl_addr);
172 pri->ctl_addr = NULL;
173 kfree(pri->local_addr);
174 pri->local_addr = NULL;
177 int daemon_user_write(int fd, void *buf, int len, struct daemon_data *pri)
179 struct sockaddr_un *data_addr = pri->data_addr;
181 return net_sendto(fd, buf, len, data_addr, sizeof(*data_addr));
184 static int daemon_set_mtu(int mtu, void *data)
189 const struct net_user_info daemon_user_info = {
190 .init = daemon_user_init,
193 .remove = daemon_remove,
194 .set_mtu = daemon_set_mtu,
196 .delete_address = NULL,
197 .max_packet = MAX_PACKET - ETH_HEADER_OTHER