124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/*
|
|
* Copyright (C) 2002 Jeff Dike <jdike@karaya.com>
|
|
* Licensed under the GPL.
|
|
*/
|
|
|
|
#include "linux/init.h"
|
|
#include "linux/netdevice.h"
|
|
#include "linux/etherdevice.h"
|
|
#include "net_kern.h"
|
|
#include "net_user.h"
|
|
#include "pcap_user.h"
|
|
|
|
struct pcap_init {
|
|
char *host_if;
|
|
int promisc;
|
|
int optimize;
|
|
char *filter;
|
|
};
|
|
|
|
void pcap_init(struct net_device *dev, void *data)
|
|
{
|
|
struct uml_net_private *pri;
|
|
struct pcap_data *ppri;
|
|
struct pcap_init *init = data;
|
|
|
|
pri = dev->priv;
|
|
ppri = (struct pcap_data *) pri->user;
|
|
ppri->host_if = init->host_if;
|
|
ppri->promisc = init->promisc;
|
|
ppri->optimize = init->optimize;
|
|
ppri->filter = init->filter;
|
|
}
|
|
|
|
static int pcap_read(int fd, struct sk_buff **skb,
|
|
struct uml_net_private *lp)
|
|
{
|
|
*skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER);
|
|
if(*skb == NULL) return(-ENOMEM);
|
|
return(pcap_user_read(fd, (*skb)->mac.raw,
|
|
(*skb)->dev->mtu + ETH_HEADER_OTHER,
|
|
(struct pcap_data *) &lp->user));
|
|
}
|
|
|
|
static int pcap_write(int fd, struct sk_buff **skb, struct uml_net_private *lp)
|
|
{
|
|
return(-EPERM);
|
|
}
|
|
|
|
static struct net_kern_info pcap_kern_info = {
|
|
.init = pcap_init,
|
|
.protocol = eth_protocol,
|
|
.read = pcap_read,
|
|
.write = pcap_write,
|
|
};
|
|
|
|
int pcap_setup(char *str, char **mac_out, void *data)
|
|
{
|
|
struct pcap_init *init = data;
|
|
char *remain, *host_if = NULL, *options[2] = { NULL, NULL };
|
|
int i;
|
|
|
|
*init = ((struct pcap_init)
|
|
{ .host_if = "eth0",
|
|
.promisc = 1,
|
|
.optimize = 0,
|
|
.filter = NULL });
|
|
|
|
remain = split_if_spec(str, &host_if, &init->filter,
|
|
&options[0], &options[1], NULL);
|
|
if(remain != NULL){
|
|
printk(KERN_ERR "pcap_setup - Extra garbage on "
|
|
"specification : '%s'\n", remain);
|
|
return(0);
|
|
}
|
|
|
|
if(host_if != NULL)
|
|
init->host_if = host_if;
|
|
|
|
for(i = 0; i < sizeof(options)/sizeof(options[0]); i++){
|
|
if(options[i] == NULL)
|
|
continue;
|
|
if(!strcmp(options[i], "promisc"))
|
|
init->promisc = 1;
|
|
else if(!strcmp(options[i], "nopromisc"))
|
|
init->promisc = 0;
|
|
else if(!strcmp(options[i], "optimize"))
|
|
init->optimize = 1;
|
|
else if(!strcmp(options[i], "nooptimize"))
|
|
init->optimize = 0;
|
|
else printk("pcap_setup : bad option - '%s'\n", options[i]);
|
|
}
|
|
|
|
return(1);
|
|
}
|
|
|
|
static struct transport pcap_transport = {
|
|
.list = LIST_HEAD_INIT(pcap_transport.list),
|
|
.name = "pcap",
|
|
.setup = pcap_setup,
|
|
.user = &pcap_user_info,
|
|
.kern = &pcap_kern_info,
|
|
.private_size = sizeof(struct pcap_data),
|
|
.setup_size = sizeof(struct pcap_init),
|
|
};
|
|
|
|
static int register_pcap(void)
|
|
{
|
|
register_transport(&pcap_transport);
|
|
return(1);
|
|
}
|
|
|
|
__initcall(register_pcap);
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* Emacs will notice this stuff at the end of the file and automatically
|
|
* adjust the settings for this buffer only. This must remain at the end
|
|
* of the file.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-file-style: "linux"
|
|
* End:
|
|
*/
|