if (!data)
return;
- // Free for 8 bit network
+ /* Free for 8 bit network */
if (depth == 0) {
free_page((unsigned long)data);
data = NULL;
return;
}
- // Free for 16 bit network
+ /* Free for 16 bit network */
if (depth == 1) {
struct ipt_account_mask_16 *mask_16 = (struct ipt_account_mask_16 *)data;
unsigned int b;
return;
}
- // Free for 24 bit network
+ /* Free for 24 bit network */
if (depth == 3) {
unsigned int a, b;
for (a=0; a <= 255; a++) {
DEBUGP("ACCOUNT: ipt_account_table_insert: %s, %u.%u.%u.%u/%u.%u.%u.%u\n", name, NIPQUAD(ip), NIPQUAD(netmask));
- // Look for existing table
+ /* Look for existing table */
for (i = 0; i < ACCOUNT_MAX_TABLES; i++) {
if (strncmp(ipt_account_tables[i].name, name, ACCOUNT_TABLE_NAME_LEN) == 0) {
DEBUGP("ACCOUNT: Found existing slot: %d - %u.%u.%u.%u/%u.%u.%u.%u\n", i,
}
}
- // Insert new table
+ /* Insert new table */
for (i = 0; i < ACCOUNT_MAX_TABLES; i++) {
- // Found free slot
+ /* Found free slot */
if (ipt_account_tables[i].name[0] == 0) {
DEBUGP("ACCOUNT: Found free slot: %d\n", i);
ipt_account_tables[i].ip = ip;
ipt_account_tables[i].netmask = netmask;
- // Calculate netsize
+ /* Calculate netsize */
unsigned int j, calc_mask, netsize=0;
calc_mask = htonl(netmask);
for (j = 31; j > 0; j--) {
break;
}
- // Calculate depth from netsize
+ /* Calculate depth from netsize */
if (netsize >= 24)
ipt_account_tables[i].depth = 0;
else if (netsize >= 16)
}
}
- // No free slot found
+ /* No free slot found */
printk("ACCOUNT: No free table slot found (max: %d). Please increase ACCOUNT_MAX_TABLES.\n", ACCOUNT_MAX_TABLES);
return -1;
}
spin_unlock_bh(&ipt_account_lock);
return 0;
}
- // Table nr caching so we don't have to do an extra string compare for every packet
+ /* Table nr caching so we don't have to do an extra string compare for every packet */
info->table_nr = table_nr;
spin_unlock_bh(&ipt_account_lock);
DEBUGP("ACCOUNT: ipt_account_deleteentry called for table: %s (#%d)\n", info->table_name, info->table_nr);
- info->table_nr = -1; // Set back to original state
+ info->table_nr = -1; /* Set back to original state */
- // Look for table
+ /* Look for table */
for (i = 0; i < ACCOUNT_MAX_TABLES; i++) {
if (strncmp(ipt_account_tables[i].name, info->table_name, ACCOUNT_TABLE_NAME_LEN) == 0) {
DEBUGP("ACCOUNT: Found table at slot: %d\n", i);
ipt_account_tables[i].refcount--;
DEBUGP("ACCOUNT: Refcount left: %d\n", ipt_account_tables[i].refcount);
- // Table not needed anymore?
+ /* Table not needed anymore? */
if (ipt_account_tables[i].refcount == 0) {
DEBUGP("ACCOUNT: Destroying table at slot: %d\n", i);
ipt_account_data_free(ipt_account_tables[i].data, ipt_account_tables[i].depth);
}
}
- // Table not found
+ /* Table not found */
printk("ACCOUNT: Table %s not found for destroy\n", info->table_name);
spin_unlock_bh(&ipt_account_lock);
}
DEBUGP("ACCOUNT: ipt_account_depth0_insert: %u.%u.%u.%u/%u.%u.%u.%u for net %u.%u.%u.%u/%u.%u.%u.%u, size: %u\n",
NIPQUAD(src_ip), NIPQUAD(dst_ip), NIPQUAD(net_ip), NIPQUAD(netmask), size);
- // Check if src/dst is inside our network.
- // Special: net_ip = 0.0.0.0/0 gets stored as src in slot 0
+ /* Check if src/dst is inside our network. */
+ /* Special: net_ip = 0.0.0.0/0 gets stored as src in slot 0 */
if (!netmask)
src_ip = 0;
if ((net_ip&netmask) == (src_ip&netmask))
return;
}
- // Check if this entry is new
+ /* Check if this entry is new */
char is_src_new_ip = 0, is_dst_new_ip = 0;
- // Calculate array positions
+ /* Calculate array positions */
unsigned char src_slot = (unsigned char)((src_ip&0xFF000000) >> 24);
unsigned char dst_slot = (unsigned char)((dst_ip&0xFF000000) >> 24);
- // Increase size counters
+ /* Increase size counters */
if (is_src) {
- // Calculate network slot
+ /* Calculate network slot */
DEBUGP("ACCOUNT: Calculated SRC 8 bit network slot: %d\n", src_slot);
if (!mask_24->ip[src_slot].src_packets && !mask_24->ip[src_slot].dst_packets)
is_src_new_ip = 1;
mask_24->ip[dst_slot].dst_bytes+=size;
}
- // Increase itemcounter
+ /* Increase itemcounter */
DEBUGP("ACCOUNT: Itemcounter before: %d\n", *itemcount);
if (src_slot == dst_slot) {
if (is_src_new_ip || is_dst_new_ip) {
void ipt_account_depth1_insert(struct ipt_account_mask_16 *mask_16, unsigned int net_ip, unsigned int netmask,
unsigned int src_ip, unsigned int dst_ip, unsigned int size, unsigned int *itemcount) {
- // Do we need to process src IP?
+ /* Do we need to process src IP? */
if ((net_ip&netmask) == (src_ip&netmask)) {
unsigned char slot = (unsigned char)((src_ip&0x00FF0000) >> 16);
DEBUGP("ACCOUNT: Calculated SRC 16 bit network slot: %d\n", slot);
- // Do we need to create a new mask_24 bucket?
+ /* Do we need to create a new mask_24 bucket? */
if (!mask_16->mask_24[slot] && (mask_16->mask_24[slot] = (void *)get_zeroed_page(GFP_KERNEL)) == NULL) {
printk("ACCOUNT: Can't process packet because out of memory!\n");
return;
src_ip, 0, size, itemcount);
}
- // Do we need to process dst IP?
+ /* Do we need to process dst IP? */
if ((net_ip&netmask) == (dst_ip&netmask)) {
unsigned char slot = (unsigned char)((dst_ip&0x00FF0000) >> 16);
DEBUGP("ACCOUNT: Calculated DST 16 bit network slot: %d\n", slot);
- // Do we need to create a new mask_24 bucket?
+ /* Do we need to create a new mask_24 bucket? */
if (!mask_16->mask_24[slot] && (mask_16->mask_24[slot] = (void *)get_zeroed_page(GFP_KERNEL)) == NULL) {
printk("ACCOUT: Can't process packet because out of memory!\n");
return;
void ipt_account_depth2_insert(struct ipt_account_mask_8 *mask_8, unsigned int net_ip, unsigned int netmask,
unsigned int src_ip, unsigned int dst_ip, unsigned int size, unsigned int *itemcount) {
- // Do we need to process src IP?
+ /* Do we need to process src IP? */
if ((net_ip&netmask) == (src_ip&netmask)) {
unsigned char slot = (unsigned char)((src_ip&0x0000FF00) >> 8);
DEBUGP("ACCOUNT: Calculated SRC 24 bit network slot: %d\n", slot);
- // Do we need to create a new mask_24 bucket?
+ /* Do we need to create a new mask_24 bucket? */
if (!mask_8->mask_16[slot] && (mask_8->mask_16[slot] = (void *)get_zeroed_page(GFP_KERNEL)) == NULL) {
printk("ACCOUNT: Can't process packet because out of memory!\n");
return;
src_ip, 0, size, itemcount);
}
- // Do we need to process dst IP?
+ /* Do we need to process dst IP? */
if ((net_ip&netmask) == (dst_ip&netmask)) {
unsigned char slot = (unsigned char)((dst_ip&0x0000FF00) >> 8);
DEBUGP("ACCOUNT: Calculated DST 24 bit network slot: %d\n", slot);
- // Do we need to create a new mask_24 bucket?
+ /* Do we need to create a new mask_24 bucket? */
if (!mask_8->mask_16[slot] && (mask_8->mask_16[slot] = (void *)get_zeroed_page(GFP_KERNEL)) == NULL) {
printk("ACCOUNT: Can't process packet because out of memory!\n");
return;
return IPT_CONTINUE;
}
- // 8 bit network or "any" network
+ /* 8 bit network or "any" network */
if (ipt_account_tables[info->table_nr].depth == 0) {
- // Count packet and check if the IP is new
+ /* Count packet and check if the IP is new */
ipt_account_depth0_insert((struct ipt_account_mask_24 *)ipt_account_tables[info->table_nr].data,
ipt_account_tables[info->table_nr].ip, ipt_account_tables[info->table_nr].netmask,
src_ip, dst_ip, size, &ipt_account_tables[info->table_nr].itemcount);
return IPT_CONTINUE;
}
- // 16 bit network
+ /* 16 bit network */
if (ipt_account_tables[info->table_nr].depth == 1) {
ipt_account_depth1_insert((struct ipt_account_mask_16 *)ipt_account_tables[info->table_nr].data,
ipt_account_tables[info->table_nr].ip, ipt_account_tables[info->table_nr].netmask,
return IPT_CONTINUE;
}
- // 24 bit network
+ /* 24 bit network */
if (ipt_account_tables[info->table_nr].depth == 2) {
ipt_account_depth2_insert((struct ipt_account_mask_8 *)ipt_account_tables[info->table_nr].data,
ipt_account_tables[info->table_nr].ip, ipt_account_tables[info->table_nr].netmask,
*/
int ipt_account_handle_find_slot(void) {
unsigned int i;
- // Insert new table
+ /* Insert new table */
for (i = 0; i < ACCOUNT_MAX_HANDLES; i++) {
- // Found free slot
+ /* Found free slot */
if (ipt_account_handles[i].data == NULL) {
- // Don't "mark" data as used as we are protected by a spinlock by the calling function.
- // handle_find_slot() is only a function to prevent code duplication.
+ /* Don't "mark" data as used as we are protected by a spinlock by the calling function. */
+ /* handle_find_slot() is only a function to prevent code duplication. */
return i;
}
}
- // No free slot found
+ /* No free slot found */
printk("ACCOUNT: No free handle slot found (max: %u). Please increase ACCOUNT_MAX_HANDLES.\n", ACCOUNT_MAX_HANDLES);
return -1;
}
return -1;
}
- // Can't find a free handle slot?
+ /* Can't find a free handle slot? */
if ((handle = ipt_account_handle_find_slot()) == -1)
return -1;
- // Fill up handle structure
+ /* Fill up handle structure */
ipt_account_handles[handle].ip = ipt_account_tables[table_nr].ip;
ipt_account_handles[handle].depth = ipt_account_tables[table_nr].depth;
ipt_account_handles[handle].itemcount = ipt_account_tables[table_nr].itemcount;
- // allocate "root" table
+ /* allocate "root" table */
if ((ipt_account_handles[handle].data = (void*)get_zeroed_page(GFP_KERNEL)) == NULL) {
printk("ACCOUNT: out of memory for root table in ipt_account_handle_prepare_read()\n");
memset (&ipt_account_handles[handle], 0, sizeof(struct ipt_account_handle));
return -1;
}
- // Recursive copy of complete data structure
+ /* Recursive copy of complete data structure */
unsigned int depth = ipt_account_handles[handle].depth;
if (depth == 0) {
memcpy(ipt_account_handles[handle].data, ipt_account_tables[table_nr].data, sizeof(struct ipt_account_mask_24));
return -1;
}
- // Can't find a free handle slot?
+ /* Can't find a free handle slot? */
if ((handle = ipt_account_handle_find_slot()) == -1)
return -1;
- // Fill up handle structure
+ /* Fill up handle structure */
ipt_account_handles[handle].ip = ipt_account_tables[table_nr].ip;
ipt_account_handles[handle].depth = ipt_account_tables[table_nr].depth;
ipt_account_handles[handle].itemcount = ipt_account_tables[table_nr].itemcount;
ipt_account_handles[handle].data = ipt_account_tables[table_nr].data;
*count = ipt_account_tables[table_nr].itemcount;
- // "Flush" table data
+ /* "Flush" table data */
ipt_account_tables[table_nr].data = (void*)get_zeroed_page(GFP_KERNEL);
ipt_account_tables[table_nr].itemcount = 0;
unsigned int net_ip = ipt_account_handles[handle].ip;
unsigned int depth = ipt_account_handles[handle].depth;
- // 8 bit network
+ /* 8 bit network */
if (depth == 0) {
struct ipt_account_mask_24 *network = (struct ipt_account_mask_24*)ipt_account_handles[handle].data;
for (i = 0; i <= 255; i++) {
handle_ip.dst_packets = network->ip[i].dst_packets;
handle_ip.dst_bytes = network->ip[i].dst_bytes;
- // Temporary buffer full? Flush to userspace
+ /* Temporary buffer full? Flush to userspace */
if (tmpbuf_pos+handle_ip_size >= PAGE_SIZE) {
copy_to_user(buffer, ipt_account_tmpbuf, tmpbuf_pos);
tmpbuf_pos = 0;
}
}
- // Flush remaining data to userspace
+ /* Flush remaining data to userspace */
if (tmpbuf_pos)
copy_to_user(buffer, ipt_account_tmpbuf, tmpbuf_pos);
return 0;
}
- // 16 bit network
+ /* 16 bit network */
if (depth == 1) {
struct ipt_account_mask_16 *network_16 = (struct ipt_account_mask_16*)ipt_account_handles[handle].data;
unsigned int b;
handle_ip.dst_packets = network->ip[i].dst_packets;
handle_ip.dst_bytes = network->ip[i].dst_bytes;
- // Temporary buffer full? Flush to userspace
+ /* Temporary buffer full? Flush to userspace */
if (tmpbuf_pos+handle_ip_size >= PAGE_SIZE) {
copy_to_user(buffer, ipt_account_tmpbuf, tmpbuf_pos);
tmpbuf_pos = 0;
}
}
- // Flush remaining data to userspace
+ /* Flush remaining data to userspace */
if (tmpbuf_pos)
copy_to_user(buffer, ipt_account_tmpbuf, tmpbuf_pos);
return 0;
}
- // 24 bit network
+ /* 24 bit network */
if (depth == 2) {
struct ipt_account_mask_8 *network_8 = (struct ipt_account_mask_8*)ipt_account_handles[handle].data;
unsigned int a, b;
handle_ip.dst_packets = network->ip[i].dst_packets;
handle_ip.dst_bytes = network->ip[i].dst_bytes;
- // Temporary buffer full? Flush to userspace
+ /* Temporary buffer full? Flush to userspace */
if (tmpbuf_pos+handle_ip_size >= PAGE_SIZE) {
copy_to_user(buffer, ipt_account_tmpbuf, tmpbuf_pos);
tmpbuf_pos = 0;
}
}
- // Flush remaining data to userspace
+ /* Flush remaining data to userspace */
if (tmpbuf_pos)
copy_to_user(buffer, ipt_account_tmpbuf, tmpbuf_pos);
break;
}
- // Find out how many handles are in use
+ /* Find out how many handles are in use */
unsigned int i;
handle.itemcount = 0;
spin_lock_bh(&ipt_account_userspace_lock);
case IPT_SO_GET_ACCOUNT_GET_TABLE_NAMES: {
spin_lock_bh(&ipt_account_lock);
- // Determine size of table names
+ /* Determine size of table names */
unsigned int size = 0, i;
for (i = 0; i < ACCOUNT_MAX_TABLES; i++) {
if (ipt_account_tables[i].name[0] != 0)
size += strlen (ipt_account_tables[i].name) + 1;
}
- size += 1; // Terminating NULL character
+ size += 1; /* Terminating NULL character */
if (*len < size) {
spin_unlock_bh(&ipt_account_lock);
ret = -ENOMEM;
break;
}
- // Copy table names to userspace
+ /* Copy table names to userspace */
char *tnames = user;
for (i = 0; i < ACCOUNT_MAX_TABLES; i++) {
if (ipt_account_tables[i].name[0] != 0) {
int len = strlen (ipt_account_tables[i].name) + 1;
- copy_to_user(tnames, ipt_account_tables[i].name, len); // copy string + terminating zero
+ copy_to_user(tnames, ipt_account_tables[i].name, len); /* copy string + terminating zero */
tnames += len;
}
}
- // Append terminating zero
+ /* Append terminating zero */
i = 0;
copy_to_user(tnames, &i, 1);
spin_unlock_bh(&ipt_account_lock);
}
memset(ipt_account_handles, 0, ACCOUNT_MAX_HANDLES*sizeof(struct ipt_account_handle));
- // Allocate one page as temporary storage
+ /* Allocate one page as temporary storage */
if ((ipt_account_tmpbuf = (void*)__get_free_page(GFP_KERNEL)) == NULL) {
printk("ACCOUNT: Out of memory for temporary buffer page\n");
kfree(ipt_account_tables);
git://developer.intra2net.com / ipt_ACCOUNT / blobdiff