diff options
author | Bart De Schuymer <bdschuym@pandora.be> | 2005-12-13 23:14:08 -0800 |
---|---|---|
committer | David S. Miller <davem@sunset.davemloft.net> | 2006-01-03 13:10:30 -0800 |
commit | d5228a4f49db32d22a39c653281b527ef371129c (patch) | |
tree | 89d2c988c877fd3d25078c40a4bdfdd8df2e553a /net/bridge/netfilter/ebt_ulog.c | |
parent | 318360646941d6f3d4c6e4ee99107392728a4079 (diff) |
[NETFILTER] ebtables: Support nf_log API from ebt_log and ebt_ulog
This makes ebt_log and ebt_ulog use the new nf_log api. This enables
the bridging packet filter to log packets e.g. via nfnetlink_log.
Signed-off-by: Bart De Schuymer <bdschuym@pandora.be>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/netfilter/ebt_ulog.c')
-rw-r--r-- | net/bridge/netfilter/ebt_ulog.c | 53 |
1 files changed, 50 insertions, 3 deletions
diff --git a/net/bridge/netfilter/ebt_ulog.c b/net/bridge/netfilter/ebt_ulog.c index aae26ae2e61..ce617b3dbbb 100644 --- a/net/bridge/netfilter/ebt_ulog.c +++ b/net/bridge/netfilter/ebt_ulog.c @@ -3,6 +3,7 @@ * * Authors: * Bart De Schuymer <bdschuym@pandora.be> + * Harald Welte <laforge@netfilter.org> * * November, 2004 * @@ -115,14 +116,13 @@ static struct sk_buff *ulog_alloc_skb(unsigned int size) return skb; } -static void ebt_ulog(const struct sk_buff *skb, unsigned int hooknr, +static void ebt_ulog_packet(unsigned int hooknr, const struct sk_buff *skb, const struct net_device *in, const struct net_device *out, - const void *data, unsigned int datalen) + const struct ebt_ulog_info *uloginfo, const char *prefix) { ebt_ulog_packet_msg_t *pm; size_t size, copy_len; struct nlmsghdr *nlh; - struct ebt_ulog_info *uloginfo = (struct ebt_ulog_info *)data; unsigned int group = uloginfo->nlgroup; ebt_ulog_buff_t *ub = &ulog_buffers[group]; spinlock_t *lock = &ub->lock; @@ -216,6 +216,39 @@ alloc_failure: goto unlock; } +/* this function is registered with the netfilter core */ +static void ebt_log_packet(unsigned int pf, unsigned int hooknum, + 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); +} + +static void ebt_ulog(const struct sk_buff *skb, unsigned int hooknr, + const struct net_device *in, const struct net_device *out, + const void *data, unsigned int datalen) +{ + struct ebt_ulog_info *uloginfo = (struct ebt_ulog_info *)data; + + ebt_ulog_packet(hooknr, skb, in, out, uloginfo, NULL); +} + + static int ebt_ulog_check(const char *tablename, unsigned int hookmask, const struct ebt_entry *e, void *data, unsigned int datalen) { @@ -240,6 +273,12 @@ static struct ebt_watcher ulog = { .me = THIS_MODULE, }; +static struct nf_logger ebt_ulog_logger = { + .name = EBT_ULOG_WATCHER, + .logfn = &ebt_log_packet, + .me = THIS_MODULE, +}; + static int __init init(void) { int i, ret = 0; @@ -265,6 +304,13 @@ static int __init init(void) else if ((ret = ebt_register_watcher(&ulog))) sock_release(ebtulognl->sk_socket); + if (nf_log_register(PF_BRIDGE, &ebt_ulog_logger) < 0) { + printk(KERN_WARNING "ebt_ulog: not logging via ulog " + "since somebody else already registered for PF_BRIDGE\n"); + /* we cannot make module load fail here, since otherwise + * ebtables userspace would abort */ + } + return ret; } @@ -273,6 +319,7 @@ static void __exit fini(void) ebt_ulog_buff_t *ub; int i; + nf_log_unregister_logger(&ebt_ulog_logger); ebt_unregister_watcher(&ulog); for (i = 0; i < EBT_ULOG_MAXNLGROUPS; i++) { ub = &ulog_buffers[i]; |