diff options
Diffstat (limited to 'net/netfilter/xt_length.c')
-rw-r--r-- | net/netfilter/xt_length.c | 45 |
1 files changed, 18 insertions, 27 deletions
diff --git a/net/netfilter/xt_length.c b/net/netfilter/xt_length.c index 3dad173..b8640f9 100644 --- a/net/netfilter/xt_length.c +++ b/net/netfilter/xt_length.c @@ -15,20 +15,16 @@ #include <linux/netfilter/x_tables.h> MODULE_AUTHOR("James Morris <jmorris@intercode.com.au>"); -MODULE_DESCRIPTION("IP tables packet length matching module"); +MODULE_DESCRIPTION("Xtables: Packet length (Layer3,4,5) match"); MODULE_LICENSE("GPL"); MODULE_ALIAS("ipt_length"); MODULE_ALIAS("ip6t_length"); static bool -match(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - const struct xt_match *match, - const void *matchinfo, - int offset, - unsigned int protoff, - bool *hotdrop) +length_mt(const struct sk_buff *skb, const struct net_device *in, + const struct net_device *out, const struct xt_match *match, + const void *matchinfo, int offset, unsigned int protoff, + bool *hotdrop) { const struct xt_length_info *info = matchinfo; u_int16_t pktlen = ntohs(ip_hdr(skb)->tot_len); @@ -37,14 +33,10 @@ match(const struct sk_buff *skb, } static bool -match6(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - const struct xt_match *match, - const void *matchinfo, - int offset, - unsigned int protoff, - bool *hotdrop) +length_mt6(const struct sk_buff *skb, const struct net_device *in, + const struct net_device *out, const struct xt_match *match, + const void *matchinfo, int offset, unsigned int protoff, + bool *hotdrop) { const struct xt_length_info *info = matchinfo; const u_int16_t pktlen = ntohs(ipv6_hdr(skb)->payload_len) + @@ -53,33 +45,32 @@ match6(const struct sk_buff *skb, return (pktlen >= info->min && pktlen <= info->max) ^ info->invert; } -static struct xt_match xt_length_match[] __read_mostly = { +static struct xt_match length_mt_reg[] __read_mostly = { { .name = "length", .family = AF_INET, - .match = match, + .match = length_mt, .matchsize = sizeof(struct xt_length_info), .me = THIS_MODULE, }, { .name = "length", .family = AF_INET6, - .match = match6, + .match = length_mt6, .matchsize = sizeof(struct xt_length_info), .me = THIS_MODULE, }, }; -static int __init xt_length_init(void) +static int __init length_mt_init(void) { - return xt_register_matches(xt_length_match, - ARRAY_SIZE(xt_length_match)); + return xt_register_matches(length_mt_reg, ARRAY_SIZE(length_mt_reg)); } -static void __exit xt_length_fini(void) +static void __exit length_mt_exit(void) { - xt_unregister_matches(xt_length_match, ARRAY_SIZE(xt_length_match)); + xt_unregister_matches(length_mt_reg, ARRAY_SIZE(length_mt_reg)); } -module_init(xt_length_init); -module_exit(xt_length_fini); +module_init(length_mt_init); +module_exit(length_mt_exit); |