/* String matching match for iptables * * (C) 2005 Pablo Neira Ayuso * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include MODULE_AUTHOR("Pablo Neira Ayuso "); MODULE_DESCRIPTION("Xtables: string-based matching"); MODULE_LICENSE("GPL"); MODULE_ALIAS("ipt_string"); MODULE_ALIAS("ip6t_string"); static bool string_mt(const struct sk_buff *skb, struct xt_action_param *par) { const struct xt_string_info *conf = par->matchinfo; bool invert; invert = conf->u.v1.flags & XT_STRING_FLAG_INVERT; return (skb_find_text((struct sk_buff *)skb, conf->from_offset, conf->to_offset, conf->config) != UINT_MAX) ^ invert; } #define STRING_TEXT_PRIV(m) ((struct xt_string_info *)(m)) static int string_mt_check(const struct xt_mtchk_param *par) { struct xt_string_info *conf = par->matchinfo; struct ts_config *ts_conf; int flags = TS_AUTOLOAD; /* Damn, can't handle this case properly with iptables... */ if (conf->from_offset > conf->to_offset) return -EINVAL; if (conf->algo[XT_STRING_MAX_ALGO_NAME_SIZE - 1] != '\0') return -EINVAL; if (conf->patlen > XT_STRING_MAX_PATTERN_SIZE) return -EINVAL; if (conf->u.v1.flags & ~(XT_STRING_FLAG_IGNORECASE | XT_STRING_FLAG_INVERT)) return -EINVAL; if (conf->u.v1.flags & XT_STRING_FLAG_IGNORECASE) flags |= TS_IGNORECASE; ts_conf = textsearch_prepare(conf->algo, conf->pattern, conf->patlen, GFP_KERNEL, flags); if (IS_ERR(ts_conf)) return PTR_ERR(ts_conf); conf->config = ts_conf; return 0; } static void string_mt_destroy(const struct xt_mtdtor_param *par) { textsearch_destroy(STRING_TEXT_PRIV(par->matchinfo)->config); } static struct xt_match xt_string_mt_reg __read_mostly = { .name = "string", .revision = 1, .family = NFPROTO_UNSPEC, .checkentry = string_mt_check, .match = string_mt, .destroy = string_mt_destroy, .matchsize = sizeof(struct xt_string_info), .me = THIS_MODULE, }; static int __init string_mt_init(void) { return xt_register_match(&xt_string_mt_reg); } static void __exit string_mt_exit(void) { xt_unregister_match(&xt_string_mt_reg); } module_init(string_mt_init); module_exit(string_mt_exit);
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authorJohannes Berg <johannes.berg@intel.com>2017-02-07 10:40:50 +0100
committerJohannes Berg <johannes.berg@intel.com>2017-02-07 10:40:50 +0100
commitbddb2afcb6c52a545f18fb9bcd4829828ebf4a3a (patch)
tree0021fe481f8acf3694d92d72f3dd1b2a71a20ca3 /net/ncsi/ncsi-pkt.h
parent228c8c6b1f4376788e9d5ab00d50b10228eb40d3 (diff)
mac80211: add back lost debugfs files
Somehow these files were never present or lost, but the code is there and they seem somewhat useful, so add them back. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/ncsi/ncsi-pkt.h')