static int pcap_open(void *data)
{
struct pcap_data *pri = data;
__u32 netmask;
int err;
if (pri->pcap == NULL)
return -ENODEV;
if (pri->filter != NULL) {
err = dev_netmask(pri->dev, &netmask);
if (err < 0) {
printk(UM_KERN_ERR "pcap_open : dev_netmask failed\n");
return -EIO;
}
pri->compiled = uml_kmalloc(sizeof(struct bpf_program),
UM_GFP_KERNEL);
if (pri->compiled == NULL) {
printk(UM_KERN_ERR "pcap_open : kmalloc failed\n");
return -ENOMEM;
}
err = pcap_compile(pri->pcap,
(struct bpf_program *) pri->compiled,
pri->filter, pri->optimize, netmask);
if (err < 0) {
printk(UM_KERN_ERR "pcap_open : pcap_compile failed - "
"'%s'\n", pcap_geterr(pri->pcap));
goto out;
}
err = pcap_setfilter(pri->pcap, pri->compiled);
if (err < 0) {
printk(UM_KERN_ERR "pcap_open : pcap_setfilter "
"failed - '%s'\n", pcap_geterr(pri->pcap));
goto out;
}
}
return PCAP_FD(pri->pcap);
out:
kfree(pri->compiled);
return -EIO;
}
static int pcap_open(void *data)
{
struct pcap_data *pri = data;
__u32 netmask;
int err;
if(pri->pcap == NULL)
return(-ENODEV);
if(pri->filter != NULL){
err = dev_netmask(pri->dev, &netmask);
if(err < 0){
printk("pcap_open : dev_netmask failed\n");
return(-EIO);
}
pri->compiled = um_kmalloc(sizeof(struct bpf_program));
if(pri->compiled == NULL){
printk("pcap_open : kmalloc failed\n");
return(-ENOMEM);
}
err = pcap_compile(pri->pcap,
(struct bpf_program *) pri->compiled,
pri->filter, pri->optimize, netmask);
if(err < 0){
printk("pcap_open : pcap_compile failed - '%s'\n",
pcap_geterr(pri->pcap));
return(-EIO);
}
err = pcap_setfilter(pri->pcap, pri->compiled);
if(err < 0){
printk("pcap_open : pcap_setfilter failed - '%s'\n",
pcap_geterr(pri->pcap));
return(-EIO);
}
}
return(PCAP_FD(pri->pcap));
}
