[MIPS] TXx9: Fix mips_hpt_frequency initialization

[linux-2.6-omap-h63xx.git] / net / netfilter / xt_string.c

diff --git a/net/netfilter/xt_string.c b/net/netfilter/xt_string.c
index 864133442cdac6c35f0f50edb81664565bf65b47..4903182a062b251a43ae583526889aefb770b264 100644 (file)
--- a/net/netfilter/xt_string.c
+++ b/net/netfilter/xt_string.c
@@ -16,40 +16,41 @@
 #include <linux/textsearch.h>
 
 MODULE_AUTHOR("Pablo Neira Ayuso <pablo@eurodev.net>");
-MODULE_DESCRIPTION("IP tables string match module");
+MODULE_DESCRIPTION("Xtables: string-based matching");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ipt_string");
 MODULE_ALIAS("ip6t_string");
 
-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)
+static bool
+string_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_string_info *conf = matchinfo;
        struct ts_state state;
+       int invert;
 
        memset(&state, 0, sizeof(struct ts_state));
 
+       invert = (match->revision == 0 ? conf->u.v0.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, &state)
-                            != UINT_MAX) ^ conf->invert;
+                            != UINT_MAX) ^ invert;
 }
 
-#define STRING_TEXT_PRIV(m) ((struct xt_string_info *) m)
+#define STRING_TEXT_PRIV(m) ((struct xt_string_info *)(m))
 
-static bool checkentry(const char *tablename,
-                      const void *ip,
-                      const struct xt_match *match,
-                      void *matchinfo,
-                      unsigned int hook_mask)
+static bool
+string_mt_check(const char *tablename, const void *ip,
+                const struct xt_match *match, void *matchinfo,
+                unsigned int hook_mask)
 {
        struct xt_string_info *conf = 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)
@@ -58,8 +59,15 @@ static bool checkentry(const char *tablename,
                return false;
        if (conf->patlen > XT_STRING_MAX_PATTERN_SIZE)
                return false;
+       if (match->revision == 1) {
+               if (conf->u.v1.flags &
+                   ~(XT_STRING_FLAG_IGNORECASE | XT_STRING_FLAG_INVERT))
+                       return false;
+               if (conf->u.v1.flags & XT_STRING_FLAG_IGNORECASE)
+                       flags |= TS_IGNORECASE;
+       }
        ts_conf = textsearch_prepare(conf->algo, conf->pattern, conf->patlen,
-                                    GFP_KERNEL, TS_AUTOLOAD);
+                                    GFP_KERNEL, flags);
        if (IS_ERR(ts_conf))
                return false;
 
@@ -68,41 +76,63 @@ static bool checkentry(const char *tablename,
        return true;
 }
 
-static void destroy(const struct xt_match *match, void *matchinfo)
+static void string_mt_destroy(const struct xt_match *match, void *matchinfo)
 {
        textsearch_destroy(STRING_TEXT_PRIV(matchinfo)->config);
 }
 
-static struct xt_match xt_string_match[] __read_mostly = {
+static struct xt_match string_mt_reg[] __read_mostly = {
+       {
+               .name           = "string",
+               .revision       = 0,
+               .family         = AF_INET,
+               .checkentry     = string_mt_check,
+               .match          = string_mt,
+               .destroy        = string_mt_destroy,
+               .matchsize      = sizeof(struct xt_string_info),
+               .me             = THIS_MODULE
+       },
        {
                .name           = "string",
+               .revision       = 1,
                .family         = AF_INET,
-               .checkentry     = checkentry,
-               .match          = match,
-               .destroy        = destroy,
+               .checkentry     = string_mt_check,
+               .match          = string_mt,
+               .destroy        = string_mt_destroy,
+               .matchsize      = sizeof(struct xt_string_info),
+               .me             = THIS_MODULE
+       },
+       {
+               .name           = "string",
+               .revision       = 0,
+               .family         = AF_INET6,
+               .checkentry     = string_mt_check,
+               .match          = string_mt,
+               .destroy        = string_mt_destroy,
                .matchsize      = sizeof(struct xt_string_info),
                .me             = THIS_MODULE
        },
        {
                .name           = "string",
+               .revision       = 1,
                .family         = AF_INET6,
-               .checkentry     = checkentry,
-               .match          = match,
-               .destroy        = destroy,
+               .checkentry     = string_mt_check,
+               .match          = string_mt,
+               .destroy        = string_mt_destroy,
                .matchsize      = sizeof(struct xt_string_info),
                .me             = THIS_MODULE
        },
 };
 
-static int __init xt_string_init(void)
+static int __init string_mt_init(void)
 {
-       return xt_register_matches(xt_string_match, ARRAY_SIZE(xt_string_match));
+       return xt_register_matches(string_mt_reg, ARRAY_SIZE(string_mt_reg));
 }
 
-static void __exit xt_string_fini(void)
+static void __exit string_mt_exit(void)
 {
-       xt_unregister_matches(xt_string_match, ARRAY_SIZE(xt_string_match));
+       xt_unregister_matches(string_mt_reg, ARRAY_SIZE(string_mt_reg));
 }
 
-module_init(xt_string_init);
-module_exit(xt_string_fini);
+module_init(string_mt_init);
+module_exit(string_mt_exit);