int
netstat_snap(int snaptype)
{
FILE *f;
char buffer[1024], hdr[1024];
char *interface;
if ((f = fopen(NETSTAT_DEV, "r")) == NULL) {
printf("Cannot open %s\n", NETSTAT_DEV);
return (UPERF_FAILURE);
}
/* ignore headers */
if (fgets(buffer, 1024, f) == NULL) {
fclose(f);
return (UPERF_FAILURE);
}
if (fgets(buffer, 1024, f) == NULL) {
fclose(f);
return (UPERF_FAILURE);
}
while (fgets(buffer, 1024, f) > 0) {
strncpy(hdr, buffer, 1024);
interface = strtok(hdr, NETSTAT_SEP);
if (snaptype == SNAP_BEGIN) {
strncpy(nics[no_nics].interface, interface,
INTERFACE_LEN);
netstat_parse(buffer, &nics[no_nics++].s[0]);
} else {
int ind = find_nic(interface);
if (ind < 0) {
printf("Nic %s came online", interface);
continue;
} else {
netstat_parse(buffer, &nics[ind].s[1]);
}
}
}
fclose(f);
return (UPERF_SUCCESS);
}
/**
* __init module function
*/
static int __init init_lvwnet(void)
{
printk(KERN_INFO "lvwnet_node: Starting module %s now.\n", LVWNET_VERSION);
if (!__params_verify())
return -EINVAL; //invalid params
ethernic = find_nic(ethernic_name);
if (ethernic == NULL){
printk(KERN_ALERT "lvwnet_node: ethernet interface [%s] not found.\n", ethernic_name);
return -EINVAL;
}
spin_lock_init(&lvwnet_lock);
spin_lock_init(&lvwnet_recv_lock);
spin_lock_init(&lvwnet_send_reg_lock);
//Setting pointers to get hw from modified mac80211
__init_sysfs();
//extern function from modified mac80211
/** convert from char to hex */
__set_ptrs_hw();
__set_ptr_skb();
printk(KERN_INFO "lvwnet_node: set as loaded (node before)\n");
lvwnet_set_loaded();
printk(KERN_INFO "lvwnet_node: set as loaded (node after)\n");
mac_strtoh(ctrl_host_addr_h, ctrl_host_addr);
printk(KERN_INFO "lvwnet_node: host set as node, and controller is: [%pM]\n", ctrl_host_addr_h);
printk(KERN_INFO "lvwnet_node: Registering ethertype 0x0808[lvwnet].\n");
dev_add_pack(&pkt_type_lvwnet);
//dev_add_pack(&pkt_type_lvwnet_data);
printk(KERN_INFO "lvwnet_node: Initializing netlink interface. (not ready yet... sorry...)\n");
send_reg_to_controller();
reg_timer_init();
return 0;
}
int
netstat_snap(int snaptype)
{
FILE *f;
char buffer[1024], hdr[1024];
char *interface, *tmp;
struct packet_stats ps;
if ((f = popen(NETSTAT_DEV, "r")) == NULL) {
printf("Cannot open %s\n", NETSTAT_DEV);
return (UPERF_FAILURE);
}
while (fgets(buffer, 1024, f) > 0) {
memset(buffer + o_address, ' ', NETSTAT_ADDRLEN);
strncpy(hdr, buffer, 1024);
interface = strtok(hdr, NETSTAT_SEP);
if (snaptype == SNAP_BEGIN) {
strncpy(nics[no_nics].interface, interface,
INTERFACE_LEN);
netstat_parse(buffer, &nics[no_nics++].s[0]);
} else {
int ind = find_nic(interface);
if (ind < 0) {
printf("Nic %s came online", interface);
continue;
} else {
netstat_parse(buffer, &nics[ind].s[1]);
}
}
}
pclose(f);
return (UPERF_SUCCESS);
}