diff options
author | Bart De Schuymer <bdschuym@pandora.be> | 2003-05-12 17:09:12 +0000 |
---|---|---|
committer | Bart De Schuymer <bdschuym@pandora.be> | 2003-05-12 17:09:12 +0000 |
commit | 3fc487a240a5aad1e32c08922d8bb04ff6255c75 (patch) | |
tree | 51dc305c729b9a631b4f2fba444cb5dd1e2ac619 /kernel/linux/net/bridge | |
parent | 45dadeedd07389716349c8389e9b5fb42feb69cc (diff) |
*** empty log message ***
Diffstat (limited to 'kernel/linux/net/bridge')
-rw-r--r-- | kernel/linux/net/bridge/netfilter/ebt_pkttype.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/kernel/linux/net/bridge/netfilter/ebt_pkttype.c b/kernel/linux/net/bridge/netfilter/ebt_pkttype.c new file mode 100644 index 0000000..fc5430e --- /dev/null +++ b/kernel/linux/net/bridge/netfilter/ebt_pkttype.c @@ -0,0 +1,60 @@ +/* + * ebt_pkttype + * + * Authors: + * Bart De Schuymer <bdschuym@pandora.be> + * + * April, 2003 + * + */ + +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_pkttype.h> +#include <linux/module.h> + +static int ebt_filter_pkttype(const struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out, + const void *data, + unsigned int datalen) +{ + struct ebt_pkttype_info *info = (struct ebt_pkttype_info *)data; + + return (skb->pkt_type != info->pkt_type) ^ info->invert; +} + +static int ebt_pkttype_check(const char *tablename, unsigned int hookmask, + const struct ebt_entry *e, void *data, unsigned int datalen) +{ + struct ebt_pkttype_info *info = (struct ebt_pkttype_info *)data; + + if (datalen != sizeof(struct ebt_pkttype_info)) + return -EINVAL; + if (info->invert != 0 && info->invert != 1) + return -EINVAL; + /* Allow any pkt_type value */ + return 0; +} + +static struct ebt_match filter_pkttype = +{ + .name = EBT_PKTTYPE_MATCH, + .match = ebt_filter_pkttype, + .check = ebt_pkttype_check, + .me = THIS_MODULE, +}; + +static int __init init(void) +{ + return ebt_register_match(&filter_pkttype); +} + +static void __exit fini(void) +{ + ebt_unregister_match(&filter_pkttype); +} + +module_init(init); +module_exit(fini); +EXPORT_NO_MODULES; +MODULE_LICENSE("GPL"); |