--- zzzz-none-000/linux-2.6.32.61/net/bridge/netfilter/ebt_vlan.c 2013-06-10 09:43:48.000000000 +0000
+++ ar10-7272-687/linux-2.6.32.61/net/bridge/netfilter/ebt_vlan.c 2014-08-12 13:03:17.000000000 +0000
@@ -14,8 +14,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * along with this program; if not, see .
*/
#include
@@ -26,26 +25,19 @@
#include
#include
-static int debug;
#define MODULE_VERS "0.6"
-module_param(debug, int, 0);
-MODULE_PARM_DESC(debug, "debug=1 is turn on debug messages");
MODULE_AUTHOR("Nick Fedchik ");
MODULE_DESCRIPTION("Ebtables: 802.1Q VLAN tag match");
MODULE_LICENSE("GPL");
-
-#define DEBUG_MSG(args...) if (debug) printk (KERN_DEBUG "ebt_vlan: " args)
#define GET_BITMASK(_BIT_MASK_) info->bitmask & _BIT_MASK_
#define EXIT_ON_MISMATCH(_MATCH_,_MASK_) {if (!((info->_MATCH_ == _MATCH_)^!!(info->invflags & _MASK_))) return false; }
static bool
-ebt_vlan_mt(const struct sk_buff *skb, const struct xt_match_param *par)
+ebt_vlan_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct ebt_vlan_info *info = par->matchinfo;
- const struct vlan_hdr *fp;
- struct vlan_hdr _frame;
unsigned short TCI; /* Whole TCI, given from parsed frame */
unsigned short id; /* VLAN ID, given from frame TCI */
@@ -53,9 +45,20 @@
/* VLAN encapsulated Type/Length field, given from orig frame */
__be16 encap;
- fp = skb_header_pointer(skb, 0, sizeof(_frame), &_frame);
- if (fp == NULL)
- return false;
+ if (vlan_tx_tag_present(skb)) {
+ TCI = vlan_tx_tag_get(skb);
+ encap = skb->protocol;
+ } else {
+ const struct vlan_hdr *fp;
+ struct vlan_hdr _frame;
+
+ fp = skb_header_pointer(skb, 0, sizeof(_frame), &_frame);
+ if (fp == NULL)
+ return false;
+
+ TCI = ntohs(fp->h_vlan_TCI);
+ encap = fp->h_vlan_encapsulated_proto;
+ }
/* Tag Control Information (TCI) consists of the following elements:
* - User_priority. The user_priority field is three bits in length,
@@ -64,10 +67,8 @@
* (CFI) is a single bit flag value. Currently ignored.
* - VLAN Identifier (VID). The VID is encoded as
* an unsigned binary number. */
- TCI = ntohs(fp->h_vlan_TCI);
id = TCI & VLAN_VID_MASK;
prio = (TCI >> 13) & 0x7;
- encap = fp->h_vlan_encapsulated_proto;
/* Checking VLAN Identifier (VID) */
if (GET_BITMASK(EBT_VLAN_ID))
@@ -84,32 +85,31 @@
return true;
}
-static bool ebt_vlan_mt_check(const struct xt_mtchk_param *par)
+static int ebt_vlan_mt_check(const struct xt_mtchk_param *par)
{
struct ebt_vlan_info *info = par->matchinfo;
const struct ebt_entry *e = par->entryinfo;
/* Is it 802.1Q frame checked? */
if (e->ethproto != htons(ETH_P_8021Q)) {
- DEBUG_MSG
- ("passed entry proto %2.4X is not 802.1Q (8100)\n",
- (unsigned short) ntohs(e->ethproto));
- return false;
+ pr_debug("passed entry proto %2.4X is not 802.1Q (8100)\n",
+ ntohs(e->ethproto));
+ return -EINVAL;
}
/* Check for bitmask range
* True if even one bit is out of mask */
if (info->bitmask & ~EBT_VLAN_MASK) {
- DEBUG_MSG("bitmask %2X is out of mask (%2X)\n",
- info->bitmask, EBT_VLAN_MASK);
- return false;
+ pr_debug("bitmask %2X is out of mask (%2X)\n",
+ info->bitmask, EBT_VLAN_MASK);
+ return -EINVAL;
}
/* Check for inversion flags range */
if (info->invflags & ~EBT_VLAN_MASK) {
- DEBUG_MSG("inversion flags %2X is out of mask (%2X)\n",
- info->invflags, EBT_VLAN_MASK);
- return false;
+ pr_debug("inversion flags %2X is out of mask (%2X)\n",
+ info->invflags, EBT_VLAN_MASK);
+ return -EINVAL;
}
/* Reserved VLAN ID (VID) values
@@ -117,14 +117,13 @@
* 0 - The null VLAN ID.
* 1 - The default Port VID (PVID)
* 0x0FFF - Reserved for implementation use.
- * if_vlan.h: VLAN_GROUP_ARRAY_LEN 4096. */
+ * if_vlan.h: VLAN_N_VID 4096. */
if (GET_BITMASK(EBT_VLAN_ID)) {
if (!!info->id) { /* if id!=0 => check vid range */
- if (info->id > VLAN_GROUP_ARRAY_LEN) {
- DEBUG_MSG
- ("id %d is out of range (1-4096)\n",
- info->id);
- return false;
+ if (info->id > VLAN_N_VID) {
+ pr_debug("id %d is out of range (1-4096)\n",
+ info->id);
+ return -EINVAL;
}
/* Note: This is valid VLAN-tagged frame point.
* Any value of user_priority are acceptable,
@@ -137,9 +136,9 @@
if (GET_BITMASK(EBT_VLAN_PRIO)) {
if ((unsigned char) info->prio > 7) {
- DEBUG_MSG("prio %d is out of range (0-7)\n",
- info->prio);
- return false;
+ pr_debug("prio %d is out of range (0-7)\n",
+ info->prio);
+ return -EINVAL;
}
}
/* Check for encapsulated proto range - it is possible to be
@@ -147,14 +146,13 @@
* if_ether.h: ETH_ZLEN 60 - Min. octets in frame sans FCS */
if (GET_BITMASK(EBT_VLAN_ENCAP)) {
if ((unsigned short) ntohs(info->encap) < ETH_ZLEN) {
- DEBUG_MSG
- ("encap frame length %d is less than minimal\n",
- ntohs(info->encap));
- return false;
+ pr_debug("encap frame length %d is less than "
+ "minimal\n", ntohs(info->encap));
+ return -EINVAL;
}
}
- return true;
+ return 0;
}
static struct xt_match ebt_vlan_mt_reg __read_mostly = {
@@ -163,15 +161,13 @@
.family = NFPROTO_BRIDGE,
.match = ebt_vlan_mt,
.checkentry = ebt_vlan_mt_check,
- .matchsize = XT_ALIGN(sizeof(struct ebt_vlan_info)),
+ .matchsize = sizeof(struct ebt_vlan_info),
.me = THIS_MODULE,
};
static int __init ebt_vlan_init(void)
{
- DEBUG_MSG("ebtables 802.1Q extension module v"
- MODULE_VERS "\n");
- DEBUG_MSG("module debug=%d\n", !!debug);
+ pr_debug("ebtables 802.1Q extension module v" MODULE_VERS "\n");
return xt_register_match(&ebt_vlan_mt_reg);
}