2005-04-17 00:20:36 +02:00
|
|
|
/*
|
|
|
|
* netfilter module for userspace bridged Ethernet frames logging daemons
|
|
|
|
*
|
|
|
|
* Authors:
|
|
|
|
* Bart De Schuymer <bdschuym@pandora.be>
|
2005-12-14 08:14:08 +01:00
|
|
|
* Harald Welte <laforge@netfilter.org>
|
2005-04-17 00:20:36 +02:00
|
|
|
*
|
|
|
|
* November, 2004
|
|
|
|
*
|
|
|
|
* Based on ipt_ULOG.c, which is
|
|
|
|
* (C) 2000-2002 by Harald Welte <laforge@netfilter.org>
|
|
|
|
*
|
2007-02-09 15:24:35 +01:00
|
|
|
* This module accepts two parameters:
|
|
|
|
*
|
2005-04-17 00:20:36 +02:00
|
|
|
* nlbufsiz:
|
|
|
|
* The parameter specifies how big the buffer for each netlink multicast
|
|
|
|
* group is. e.g. If you say nlbufsiz=8192, up to eight kb of packets will
|
|
|
|
* get accumulated in the kernel until they are sent to userspace. It is
|
|
|
|
* NOT possible to allocate more than 128kB, and it is strongly discouraged,
|
|
|
|
* because atomically allocating 128kB inside the network rx softirq is not
|
|
|
|
* reliable. Please also keep in mind that this buffer size is allocated for
|
|
|
|
* each nlgroup you are using, so the total kernel memory usage increases
|
|
|
|
* by that factor.
|
|
|
|
*
|
|
|
|
* flushtimeout:
|
|
|
|
* Specify, after how many hundredths of a second the queue should be
|
|
|
|
* flushed even if it is not full yet.
|
|
|
|
*
|
|
|
|
*/
|
2010-03-19 21:08:16 +01:00
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
2005-04-17 00:20:36 +02:00
|
|
|
#include <linux/module.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 09:04:11 +01:00
|
|
|
#include <linux/slab.h>
|
2005-04-17 00:20:36 +02:00
|
|
|
#include <linux/spinlock.h>
|
|
|
|
#include <linux/socket.h>
|
|
|
|
#include <linux/skbuff.h>
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/timer.h>
|
|
|
|
#include <linux/netlink.h>
|
|
|
|
#include <linux/netdevice.h>
|
2008-10-08 11:35:13 +02:00
|
|
|
#include <linux/netfilter/x_tables.h>
|
2005-04-17 00:20:36 +02:00
|
|
|
#include <linux/netfilter_bridge/ebtables.h>
|
|
|
|
#include <linux/netfilter_bridge/ebt_ulog.h>
|
2007-12-18 07:38:49 +01:00
|
|
|
#include <net/netfilter/nf_log.h>
|
2005-04-17 00:20:36 +02:00
|
|
|
#include <net/sock.h>
|
|
|
|
#include "../br_private.h"
|
|
|
|
|
2006-02-04 11:13:14 +01:00
|
|
|
static unsigned int nlbufsiz = NLMSG_GOODSIZE;
|
2005-04-17 00:20:36 +02:00
|
|
|
module_param(nlbufsiz, uint, 0600);
|
|
|
|
MODULE_PARM_DESC(nlbufsiz, "netlink buffer size (number of bytes) "
|
2007-02-09 15:24:35 +01:00
|
|
|
"(defaults to 4096)");
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
static unsigned int flushtimeout = 10;
|
|
|
|
module_param(flushtimeout, uint, 0600);
|
|
|
|
MODULE_PARM_DESC(flushtimeout, "buffer flush timeout (hundredths ofa second) "
|
2007-02-09 15:24:35 +01:00
|
|
|
"(defaults to 10)");
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
typedef struct {
|
|
|
|
unsigned int qlen; /* number of nlmsgs' in the skb */
|
|
|
|
struct nlmsghdr *lastnlh; /* netlink header of last msg in skb */
|
|
|
|
struct sk_buff *skb; /* the pre-allocated skb */
|
|
|
|
struct timer_list timer; /* the timer function */
|
|
|
|
spinlock_t lock; /* the per-queue lock */
|
|
|
|
} ebt_ulog_buff_t;
|
|
|
|
|
|
|
|
static ebt_ulog_buff_t ulog_buffers[EBT_ULOG_MAXNLGROUPS];
|
|
|
|
static struct sock *ebtulognl;
|
|
|
|
|
|
|
|
/* send one ulog_buff_t to userspace */
|
|
|
|
static void ulog_send(unsigned int nlgroup)
|
|
|
|
{
|
|
|
|
ebt_ulog_buff_t *ub = &ulog_buffers[nlgroup];
|
|
|
|
|
|
|
|
if (timer_pending(&ub->timer))
|
|
|
|
del_timer(&ub->timer);
|
|
|
|
|
2006-08-14 03:57:54 +02:00
|
|
|
if (!ub->skb)
|
|
|
|
return;
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
/* last nlmsg needs NLMSG_DONE */
|
|
|
|
if (ub->qlen > 1)
|
|
|
|
ub->lastnlh->nlmsg_type = NLMSG_DONE;
|
|
|
|
|
2005-08-15 04:29:52 +02:00
|
|
|
NETLINK_CB(ub->skb).dst_group = nlgroup + 1;
|
|
|
|
netlink_broadcast(ebtulognl, ub->skb, 0, nlgroup + 1, GFP_ATOMIC);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
ub->qlen = 0;
|
|
|
|
ub->skb = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* timer function to flush queue in flushtimeout time */
|
|
|
|
static void ulog_timer(unsigned long data)
|
|
|
|
{
|
|
|
|
spin_lock_bh(&ulog_buffers[data].lock);
|
|
|
|
if (ulog_buffers[data].skb)
|
|
|
|
ulog_send(data);
|
|
|
|
spin_unlock_bh(&ulog_buffers[data].lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct sk_buff *ulog_alloc_skb(unsigned int size)
|
|
|
|
{
|
|
|
|
struct sk_buff *skb;
|
2006-02-04 11:13:57 +01:00
|
|
|
unsigned int n;
|
2005-04-17 00:20:36 +02:00
|
|
|
|
2006-02-04 11:13:57 +01:00
|
|
|
n = max(size, nlbufsiz);
|
|
|
|
skb = alloc_skb(n, GFP_ATOMIC);
|
2005-04-17 00:20:36 +02:00
|
|
|
if (!skb) {
|
2010-03-19 21:08:16 +01:00
|
|
|
pr_debug("cannot alloc whole buffer of size %ub!\n", n);
|
2006-02-04 11:13:57 +01:00
|
|
|
if (n > size) {
|
2005-04-17 00:20:36 +02:00
|
|
|
/* try to allocate only as much as we need for
|
|
|
|
* current packet */
|
|
|
|
skb = alloc_skb(size, GFP_ATOMIC);
|
|
|
|
if (!skb)
|
2010-03-19 21:08:16 +01:00
|
|
|
pr_debug("cannot even allocate "
|
|
|
|
"buffer of size %ub\n", size);
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return skb;
|
|
|
|
}
|
|
|
|
|
2005-12-14 08:14:08 +01:00
|
|
|
static void ebt_ulog_packet(unsigned int hooknr, const struct sk_buff *skb,
|
2005-04-17 00:20:36 +02:00
|
|
|
const struct net_device *in, const struct net_device *out,
|
2005-12-14 08:14:08 +01:00
|
|
|
const struct ebt_ulog_info *uloginfo, const char *prefix)
|
2005-04-17 00:20:36 +02:00
|
|
|
{
|
|
|
|
ebt_ulog_packet_msg_t *pm;
|
|
|
|
size_t size, copy_len;
|
|
|
|
struct nlmsghdr *nlh;
|
|
|
|
unsigned int group = uloginfo->nlgroup;
|
|
|
|
ebt_ulog_buff_t *ub = &ulog_buffers[group];
|
|
|
|
spinlock_t *lock = &ub->lock;
|
2007-04-20 01:16:32 +02:00
|
|
|
ktime_t kt;
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
if ((uloginfo->cprange == 0) ||
|
|
|
|
(uloginfo->cprange > skb->len + ETH_HLEN))
|
|
|
|
copy_len = skb->len + ETH_HLEN;
|
|
|
|
else
|
|
|
|
copy_len = uloginfo->cprange;
|
|
|
|
|
|
|
|
size = NLMSG_SPACE(sizeof(*pm) + copy_len);
|
|
|
|
if (size > nlbufsiz) {
|
2010-03-19 21:08:16 +01:00
|
|
|
pr_debug("Size %Zd needed, but nlbufsiz=%d\n", size, nlbufsiz);
|
2005-04-17 00:20:36 +02:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_lock_bh(lock);
|
|
|
|
|
|
|
|
if (!ub->skb) {
|
|
|
|
if (!(ub->skb = ulog_alloc_skb(size)))
|
|
|
|
goto alloc_failure;
|
|
|
|
} else if (size > skb_tailroom(ub->skb)) {
|
|
|
|
ulog_send(group);
|
|
|
|
|
|
|
|
if (!(ub->skb = ulog_alloc_skb(size)))
|
|
|
|
goto alloc_failure;
|
|
|
|
}
|
|
|
|
|
|
|
|
nlh = NLMSG_PUT(ub->skb, 0, ub->qlen, 0,
|
2007-02-09 15:24:35 +01:00
|
|
|
size - NLMSG_ALIGN(sizeof(*nlh)));
|
2005-04-17 00:20:36 +02:00
|
|
|
ub->qlen++;
|
|
|
|
|
|
|
|
pm = NLMSG_DATA(nlh);
|
|
|
|
|
|
|
|
/* Fill in the ulog data */
|
|
|
|
pm->version = EBT_ULOG_VERSION;
|
2007-04-20 01:16:32 +02:00
|
|
|
kt = ktime_get_real();
|
|
|
|
pm->stamp = ktime_to_timeval(kt);
|
2005-04-17 00:20:36 +02:00
|
|
|
if (ub->qlen == 1)
|
2007-04-20 01:16:32 +02:00
|
|
|
ub->skb->tstamp = kt;
|
2005-04-17 00:20:36 +02:00
|
|
|
pm->data_len = copy_len;
|
2006-11-10 00:19:14 +01:00
|
|
|
pm->mark = skb->mark;
|
2005-04-17 00:20:36 +02:00
|
|
|
pm->hook = hooknr;
|
|
|
|
if (uloginfo->prefix != NULL)
|
|
|
|
strcpy(pm->prefix, uloginfo->prefix);
|
|
|
|
else
|
|
|
|
*(pm->prefix) = '\0';
|
|
|
|
|
|
|
|
if (in) {
|
|
|
|
strcpy(pm->physindev, in->name);
|
|
|
|
/* If in isn't a bridge, then physindev==indev */
|
2010-06-15 08:50:45 +02:00
|
|
|
if (br_port_exists(in))
|
|
|
|
/* rcu_read_lock()ed by nf_hook_slow */
|
|
|
|
strcpy(pm->indev, br_port_get_rcu(in)->br->dev->name);
|
2005-04-17 00:20:36 +02:00
|
|
|
else
|
|
|
|
strcpy(pm->indev, in->name);
|
|
|
|
} else
|
|
|
|
pm->indev[0] = pm->physindev[0] = '\0';
|
|
|
|
|
|
|
|
if (out) {
|
|
|
|
/* If out exists, then out is a bridge port */
|
|
|
|
strcpy(pm->physoutdev, out->name);
|
2010-06-15 08:50:45 +02:00
|
|
|
/* rcu_read_lock()ed by nf_hook_slow */
|
|
|
|
strcpy(pm->outdev, br_port_get_rcu(out)->br->dev->name);
|
2005-04-17 00:20:36 +02:00
|
|
|
} else
|
|
|
|
pm->outdev[0] = pm->physoutdev[0] = '\0';
|
|
|
|
|
|
|
|
if (skb_copy_bits(skb, -ETH_HLEN, pm->data, copy_len) < 0)
|
|
|
|
BUG();
|
|
|
|
|
|
|
|
if (ub->qlen > 1)
|
|
|
|
ub->lastnlh->nlmsg_flags |= NLM_F_MULTI;
|
|
|
|
|
|
|
|
ub->lastnlh = nlh;
|
|
|
|
|
|
|
|
if (ub->qlen >= uloginfo->qthreshold)
|
|
|
|
ulog_send(group);
|
|
|
|
else if (!timer_pending(&ub->timer)) {
|
|
|
|
ub->timer.expires = jiffies + flushtimeout * HZ / 100;
|
|
|
|
add_timer(&ub->timer);
|
|
|
|
}
|
|
|
|
|
|
|
|
unlock:
|
|
|
|
spin_unlock_bh(lock);
|
|
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
nlmsg_failure:
|
2010-03-19 21:08:16 +01:00
|
|
|
pr_debug("error during NLMSG_PUT. This should "
|
|
|
|
"not happen, please report to author.\n");
|
2005-04-17 00:20:36 +02:00
|
|
|
goto unlock;
|
|
|
|
alloc_failure:
|
|
|
|
goto unlock;
|
|
|
|
}
|
|
|
|
|
2005-12-14 08:14:08 +01:00
|
|
|
/* this function is registered with the netfilter core */
|
2008-10-08 11:35:00 +02:00
|
|
|
static void ebt_log_packet(u_int8_t pf, unsigned int hooknum,
|
2005-12-14 08:14:08 +01:00
|
|
|
const struct sk_buff *skb, const struct net_device *in,
|
|
|
|
const struct net_device *out, const struct nf_loginfo *li,
|
|
|
|
const char *prefix)
|
|
|
|
{
|
|
|
|
struct ebt_ulog_info loginfo;
|
|
|
|
|
|
|
|
if (!li || li->type != NF_LOG_TYPE_ULOG) {
|
|
|
|
loginfo.nlgroup = EBT_ULOG_DEFAULT_NLGROUP;
|
|
|
|
loginfo.cprange = 0;
|
|
|
|
loginfo.qthreshold = EBT_ULOG_DEFAULT_QTHRESHOLD;
|
|
|
|
loginfo.prefix[0] = '\0';
|
|
|
|
} else {
|
|
|
|
loginfo.nlgroup = li->u.ulog.group;
|
|
|
|
loginfo.cprange = li->u.ulog.copy_len;
|
|
|
|
loginfo.qthreshold = li->u.ulog.qthreshold;
|
|
|
|
strlcpy(loginfo.prefix, prefix, sizeof(loginfo.prefix));
|
|
|
|
}
|
|
|
|
|
|
|
|
ebt_ulog_packet(hooknum, skb, in, out, &loginfo, prefix);
|
|
|
|
}
|
|
|
|
|
2008-10-08 11:35:15 +02:00
|
|
|
static unsigned int
|
2009-07-05 19:43:26 +02:00
|
|
|
ebt_ulog_tg(struct sk_buff *skb, const struct xt_action_param *par)
|
2005-12-14 08:14:08 +01:00
|
|
|
{
|
2008-10-08 11:35:19 +02:00
|
|
|
ebt_ulog_packet(par->hooknum, skb, par->in, par->out,
|
|
|
|
par->targinfo, NULL);
|
2008-10-08 11:35:13 +02:00
|
|
|
return EBT_CONTINUE;
|
2005-12-14 08:14:08 +01:00
|
|
|
}
|
|
|
|
|
2010-03-19 17:16:42 +01:00
|
|
|
static int ebt_ulog_tg_check(const struct xt_tgchk_param *par)
|
2005-04-17 00:20:36 +02:00
|
|
|
{
|
2008-10-08 11:35:19 +02:00
|
|
|
struct ebt_ulog_info *uloginfo = par->targinfo;
|
2005-04-17 00:20:36 +02:00
|
|
|
|
2008-10-08 11:35:13 +02:00
|
|
|
if (uloginfo->nlgroup > 31)
|
2010-03-25 16:34:45 +01:00
|
|
|
return -EINVAL;
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
uloginfo->prefix[EBT_ULOG_PREFIX_LEN - 1] = '\0';
|
|
|
|
|
|
|
|
if (uloginfo->qthreshold > EBT_ULOG_MAX_QLEN)
|
|
|
|
uloginfo->qthreshold = EBT_ULOG_MAX_QLEN;
|
|
|
|
|
2010-03-25 16:34:45 +01:00
|
|
|
return 0;
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
|
2008-10-08 11:35:15 +02:00
|
|
|
static struct xt_target ebt_ulog_tg_reg __read_mostly = {
|
|
|
|
.name = "ulog",
|
2008-10-08 11:35:14 +02:00
|
|
|
.revision = 0,
|
|
|
|
.family = NFPROTO_BRIDGE,
|
2008-10-08 11:35:15 +02:00
|
|
|
.target = ebt_ulog_tg,
|
|
|
|
.checkentry = ebt_ulog_tg_check,
|
2010-02-15 18:16:26 +01:00
|
|
|
.targetsize = sizeof(struct ebt_ulog_info),
|
2005-04-17 00:20:36 +02:00
|
|
|
.me = THIS_MODULE,
|
|
|
|
};
|
|
|
|
|
2009-03-26 09:03:23 +01:00
|
|
|
static struct nf_logger ebt_ulog_logger __read_mostly = {
|
2009-03-26 09:04:28 +01:00
|
|
|
.name = "ebt_ulog",
|
2005-12-14 08:14:08 +01:00
|
|
|
.logfn = &ebt_log_packet,
|
|
|
|
.me = THIS_MODULE,
|
|
|
|
};
|
|
|
|
|
2006-03-29 02:37:06 +02:00
|
|
|
static int __init ebt_ulog_init(void)
|
2005-04-17 00:20:36 +02:00
|
|
|
{
|
2009-03-26 09:04:02 +01:00
|
|
|
int ret;
|
2008-10-08 11:35:13 +02:00
|
|
|
int i;
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
if (nlbufsiz >= 128*1024) {
|
2010-03-19 21:08:16 +01:00
|
|
|
pr_warning("Netlink buffer has to be <= 128kB,"
|
|
|
|
" please try a smaller nlbufsiz parameter.\n");
|
2009-03-26 09:04:02 +01:00
|
|
|
return -EINVAL;
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* initialize ulog_buffers */
|
|
|
|
for (i = 0; i < EBT_ULOG_MAXNLGROUPS; i++) {
|
2007-03-23 19:16:30 +01:00
|
|
|
setup_timer(&ulog_buffers[i].timer, ulog_timer, i);
|
2005-04-17 00:20:36 +02:00
|
|
|
spin_lock_init(&ulog_buffers[i].lock);
|
|
|
|
}
|
|
|
|
|
2007-09-12 13:05:38 +02:00
|
|
|
ebtulognl = netlink_kernel_create(&init_net, NETLINK_NFLOG,
|
|
|
|
EBT_ULOG_MAXNLGROUPS, NULL, NULL,
|
|
|
|
THIS_MODULE);
|
2010-03-18 00:27:03 +01:00
|
|
|
if (!ebtulognl)
|
2009-03-26 09:04:02 +01:00
|
|
|
ret = -ENOMEM;
|
2010-03-18 00:27:03 +01:00
|
|
|
else if ((ret = xt_register_target(&ebt_ulog_tg_reg)) != 0)
|
2008-01-28 23:41:19 +01:00
|
|
|
netlink_kernel_release(ebtulognl);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
2009-03-26 09:04:02 +01:00
|
|
|
if (ret == 0)
|
2008-10-08 11:35:01 +02:00
|
|
|
nf_log_register(NFPROTO_BRIDGE, &ebt_ulog_logger);
|
2005-12-14 08:14:08 +01:00
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2006-03-29 02:37:06 +02:00
|
|
|
static void __exit ebt_ulog_fini(void)
|
2005-04-17 00:20:36 +02:00
|
|
|
{
|
|
|
|
ebt_ulog_buff_t *ub;
|
|
|
|
int i;
|
|
|
|
|
2007-02-12 20:11:55 +01:00
|
|
|
nf_log_unregister(&ebt_ulog_logger);
|
2008-10-08 11:35:15 +02:00
|
|
|
xt_unregister_target(&ebt_ulog_tg_reg);
|
2005-04-17 00:20:36 +02:00
|
|
|
for (i = 0; i < EBT_ULOG_MAXNLGROUPS; i++) {
|
|
|
|
ub = &ulog_buffers[i];
|
|
|
|
if (timer_pending(&ub->timer))
|
|
|
|
del_timer(&ub->timer);
|
|
|
|
spin_lock_bh(&ub->lock);
|
|
|
|
if (ub->skb) {
|
|
|
|
kfree_skb(ub->skb);
|
|
|
|
ub->skb = NULL;
|
|
|
|
}
|
|
|
|
spin_unlock_bh(&ub->lock);
|
|
|
|
}
|
2008-01-28 23:41:19 +01:00
|
|
|
netlink_kernel_release(ebtulognl);
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
|
2006-03-29 02:37:06 +02:00
|
|
|
module_init(ebt_ulog_init);
|
|
|
|
module_exit(ebt_ulog_fini);
|
2005-04-17 00:20:36 +02:00
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_AUTHOR("Bart De Schuymer <bdschuym@pandora.be>");
|
2008-01-31 13:00:30 +01:00
|
|
|
MODULE_DESCRIPTION("Ebtables: Packet logging to netlink using ULOG");
|