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netfilter: xt_NFLOG: use nf_log_packet instead of nfulnl_log_packet.

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The nfulnl_log_packet() is added to make sure that the NFLOG target
works as only user-space logger. but now, nf_log_packet() can find proper
log function using NF_LOG_TYPE_ULOG and NF_LOG_TYPE_LOG.

Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Taehee Yoo 2018-04-09 16:40:34 +02:00 committed by Pablo Neira Ayuso
parent 415787d779
commit ce20cdf498
3 changed files with 14 additions and 26 deletions
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17
include/net/netfilter/nfnetlink_log.h
View file

@ -1,18 +1 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _KER_NFNETLINK_LOG_H
#define _KER_NFNETLINK_LOG_H
void
nfulnl_log_packet(struct net *net,
u_int8_t pf,
unsigned int hooknum,
const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
const struct nf_loginfo *li_user,
const char *prefix);
#define NFULNL_COPY_DISABLED 0xff
#endif /* _KER_NFNETLINK_LOG_H */

8
net/netfilter/nfnetlink_log.c
View file

@ -37,7 +37,6 @@
#include <net/sock.h>
#include <net/netfilter/nf_log.h>
#include <net/netns/generic.h>
#include <net/netfilter/nfnetlink_log.h>
#include <linux/atomic.h>
#include <linux/refcount.h>
@ -47,6 +46,7 @@
#include "../bridge/br_private.h"
#endif
#define NFULNL_COPY_DISABLED 0xff
#define NFULNL_NLBUFSIZ_DEFAULT NLMSG_GOODSIZE
#define NFULNL_TIMEOUT_DEFAULT 100 /* every second */
#define NFULNL_QTHRESH_DEFAULT 100 /* 100 packets */
@ -618,7 +618,7 @@ static const struct nf_loginfo default_loginfo = {
};
/* log handler for internal netfilter logging api */
void
static void
nfulnl_log_packet(struct net *net,
u_int8_t pf,
unsigned int hooknum,
@ -633,7 +633,7 @@ nfulnl_log_packet(struct net *net,
struct nfulnl_instance *inst;
const struct nf_loginfo *li;
unsigned int qthreshold;
unsigned int plen;
unsigned int plen = 0;
struct nfnl_log_net *log = nfnl_log_pernet(net);
const struct nfnl_ct_hook *nfnl_ct = NULL;
struct nf_conn *ct = NULL;
@ -648,7 +648,6 @@ nfulnl_log_packet(struct net *net,
if (!inst)
return;
plen = 0;
if (prefix)
plen = strlen(prefix) + 1;
@ -760,7 +759,6 @@ nfulnl_log_packet(struct net *net,
/* FIXME: statistics */
goto unlock_and_release;
}
EXPORT_SYMBOL_GPL(nfulnl_log_packet);
static int
nfulnl_rcv_nl_event(struct notifier_block *this,

15
net/netfilter/xt_NFLOG.c
View file

@ -13,7 +13,6 @@
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_NFLOG.h>
#include <net/netfilter/nf_log.h>
#include <net/netfilter/nfnetlink_log.h>
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
MODULE_DESCRIPTION("Xtables: packet logging to netlink using NFLOG");
@ -37,8 +36,9 @@ nflog_tg(struct sk_buff *skb, const struct xt_action_param *par)
if (info->flags & XT_NFLOG_F_COPY_LEN)
li.u.ulog.flags |= NF_LOG_F_COPY_LEN;
nfulnl_log_packet(net, xt_family(par), xt_hooknum(par), skb,
xt_in(par), xt_out(par), &li, info->prefix);
nf_log_packet(net, xt_family(par), xt_hooknum(par), skb, xt_in(par),
xt_out(par), &li, "%s", info->prefix);
return XT_CONTINUE;
}
@ -50,7 +50,13 @@ static int nflog_tg_check(const struct xt_tgchk_param *par)
return -EINVAL;
if (info->prefix[sizeof(info->prefix) - 1] != '\0')
return -EINVAL;
return 0;
return nf_logger_find_get(par->family, NF_LOG_TYPE_ULOG);
}
static void nflog_tg_destroy(const struct xt_tgdtor_param *par)
{
nf_logger_put(par->family, NF_LOG_TYPE_ULOG);
}
static struct xt_target nflog_tg_reg __read_mostly = {
@ -58,6 +64,7 @@ static struct xt_target nflog_tg_reg __read_mostly = {
.revision = 0,
.family = NFPROTO_UNSPEC,
.checkentry = nflog_tg_check,
.destroy = nflog_tg_destroy,
.target = nflog_tg,
.targetsize = sizeof(struct xt_nflog_info),
.me = THIS_MODULE,