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-rw-r--r--include/linux/netfilter/nfnetlink.h1
-rw-r--r--include/linux/netfilter/nfnetlink_log.h6
-rw-r--r--include/linux/netfilter/x_tables.h101
-rw-r--r--include/linux/netfilter/xt_policy.h58
4 files changed, 156 insertions, 10 deletions
diff --git a/include/linux/netfilter/nfnetlink.h b/include/linux/netfilter/nfnetlink.h
index 934a2479f160..9f5b12cf489b 100644
--- a/include/linux/netfilter/nfnetlink.h
+++ b/include/linux/netfilter/nfnetlink.h
@@ -164,6 +164,7 @@ extern void nfattr_parse(struct nfattr *tb[], int maxattr,
__res; \
})
+extern int nfnetlink_has_listeners(unsigned int group);
extern int nfnetlink_send(struct sk_buff *skb, u32 pid, unsigned group,
int echo);
extern int nfnetlink_unicast(struct sk_buff *skb, u_int32_t pid, int flags);
diff --git a/include/linux/netfilter/nfnetlink_log.h b/include/linux/netfilter/nfnetlink_log.h
index b04b03880595..a7497c7436df 100644
--- a/include/linux/netfilter/nfnetlink_log.h
+++ b/include/linux/netfilter/nfnetlink_log.h
@@ -47,6 +47,8 @@ enum nfulnl_attr_type {
NFULA_PAYLOAD, /* opaque data payload */
NFULA_PREFIX, /* string prefix */
NFULA_UID, /* user id of socket */
+ NFULA_SEQ, /* instance-local sequence number */
+ NFULA_SEQ_GLOBAL, /* global sequence number */
__NFULA_MAX
};
@@ -77,6 +79,7 @@ enum nfulnl_attr_config {
NFULA_CFG_NLBUFSIZ, /* u_int32_t buffer size */
NFULA_CFG_TIMEOUT, /* u_int32_t in 1/100 s */
NFULA_CFG_QTHRESH, /* u_int32_t */
+ NFULA_CFG_FLAGS, /* u_int16_t */
__NFULA_CFG_MAX
};
#define NFULA_CFG_MAX (__NFULA_CFG_MAX -1)
@@ -85,4 +88,7 @@ enum nfulnl_attr_config {
#define NFULNL_COPY_META 0x01
#define NFULNL_COPY_PACKET 0x02
+#define NFULNL_CFG_F_SEQ 0x0001
+#define NFULNL_CFG_F_SEQ_GLOBAL 0x0002
+
#endif /* _NFNETLINK_LOG_H */
diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index 6500d4e59d46..1350e47b0234 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -4,6 +4,62 @@
#define XT_FUNCTION_MAXNAMELEN 30
#define XT_TABLE_MAXNAMELEN 32
+struct xt_entry_match
+{
+ union {
+ struct {
+ u_int16_t match_size;
+
+ /* Used by userspace */
+ char name[XT_FUNCTION_MAXNAMELEN-1];
+
+ u_int8_t revision;
+ } user;
+ struct {
+ u_int16_t match_size;
+
+ /* Used inside the kernel */
+ struct xt_match *match;
+ } kernel;
+
+ /* Total length */
+ u_int16_t match_size;
+ } u;
+
+ unsigned char data[0];
+};
+
+struct xt_entry_target
+{
+ union {
+ struct {
+ u_int16_t target_size;
+
+ /* Used by userspace */
+ char name[XT_FUNCTION_MAXNAMELEN-1];
+
+ u_int8_t revision;
+ } user;
+ struct {
+ u_int16_t target_size;
+
+ /* Used inside the kernel */
+ struct xt_target *target;
+ } kernel;
+
+ /* Total length */
+ u_int16_t target_size;
+ } u;
+
+ unsigned char data[0];
+};
+
+struct xt_standard_target
+{
+ struct xt_entry_target target;
+ int verdict;
+};
+
/* The argument to IPT_SO_GET_REVISION_*. Returns highest revision
* kernel supports, if >= revision. */
struct xt_get_revision
@@ -92,8 +148,6 @@ struct xt_match
const char name[XT_FUNCTION_MAXNAMELEN-1];
- u_int8_t revision;
-
/* Return true or false: return FALSE and set *hotdrop = 1 to
force immediate packet drop. */
/* Arguments changed since 2.6.9, as this must now handle
@@ -102,6 +156,7 @@ struct xt_match
int (*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,
@@ -111,15 +166,25 @@ struct xt_match
/* Should return true or false. */
int (*checkentry)(const char *tablename,
const void *ip,
+ const struct xt_match *match,
void *matchinfo,
unsigned int matchinfosize,
unsigned int hook_mask);
/* Called when entry of this type deleted. */
- void (*destroy)(void *matchinfo, unsigned int matchinfosize);
+ void (*destroy)(const struct xt_match *match, void *matchinfo,
+ unsigned int matchinfosize);
/* Set this to THIS_MODULE if you are a module, otherwise NULL */
struct module *me;
+
+ char *table;
+ unsigned int matchsize;
+ unsigned int hooks;
+ unsigned short proto;
+
+ unsigned short family;
+ u_int8_t revision;
};
/* Registration hooks for targets. */
@@ -129,8 +194,6 @@ struct xt_target
const char name[XT_FUNCTION_MAXNAMELEN-1];
- u_int8_t revision;
-
/* Returns verdict. Argument order changed since 2.6.9, as this
must now handle non-linear skbs, using skb_copy_bits and
skb_ip_make_writable. */
@@ -138,6 +201,7 @@ struct xt_target
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
+ const struct xt_target *target,
const void *targinfo,
void *userdata);
@@ -147,15 +211,25 @@ struct xt_target
/* Should return true or false. */
int (*checkentry)(const char *tablename,
const void *entry,
+ const struct xt_target *target,
void *targinfo,
unsigned int targinfosize,
unsigned int hook_mask);
/* Called when entry of this type deleted. */
- void (*destroy)(void *targinfo, unsigned int targinfosize);
+ void (*destroy)(const struct xt_target *target, void *targinfo,
+ unsigned int targinfosize);
/* Set this to THIS_MODULE if you are a module, otherwise NULL */
struct module *me;
+
+ char *table;
+ unsigned int targetsize;
+ unsigned int hooks;
+ unsigned short proto;
+
+ unsigned short family;
+ u_int8_t revision;
};
/* Furniture shopping... */
@@ -202,10 +276,17 @@ struct xt_table_info
char *entries[NR_CPUS];
};
-extern int xt_register_target(int af, struct xt_target *target);
-extern void xt_unregister_target(int af, struct xt_target *target);
-extern int xt_register_match(int af, struct xt_match *target);
-extern void xt_unregister_match(int af, struct xt_match *target);
+extern int xt_register_target(struct xt_target *target);
+extern void xt_unregister_target(struct xt_target *target);
+extern int xt_register_match(struct xt_match *target);
+extern void xt_unregister_match(struct xt_match *target);
+
+extern int xt_check_match(const struct xt_match *match, unsigned short family,
+ unsigned int size, const char *table, unsigned int hook,
+ unsigned short proto, int inv_proto);
+extern int xt_check_target(const struct xt_target *target, unsigned short family,
+ unsigned int size, const char *table, unsigned int hook,
+ unsigned short proto, int inv_proto);
extern int xt_register_table(struct xt_table *table,
struct xt_table_info *bootstrap,
diff --git a/include/linux/netfilter/xt_policy.h b/include/linux/netfilter/xt_policy.h
new file mode 100644
index 000000000000..a8132ec076fb
--- /dev/null
+++ b/include/linux/netfilter/xt_policy.h
@@ -0,0 +1,58 @@
+#ifndef _XT_POLICY_H
+#define _XT_POLICY_H
+
+#define XT_POLICY_MAX_ELEM 4
+
+enum xt_policy_flags
+{
+ XT_POLICY_MATCH_IN = 0x1,
+ XT_POLICY_MATCH_OUT = 0x2,
+ XT_POLICY_MATCH_NONE = 0x4,
+ XT_POLICY_MATCH_STRICT = 0x8,
+};
+
+enum xt_policy_modes
+{
+ XT_POLICY_MODE_TRANSPORT,
+ XT_POLICY_MODE_TUNNEL
+};
+
+struct xt_policy_spec
+{
+ u_int8_t saddr:1,
+ daddr:1,
+ proto:1,
+ mode:1,
+ spi:1,
+ reqid:1;
+};
+
+union xt_policy_addr
+{
+ struct in_addr a4;
+ struct in6_addr a6;
+};
+
+struct xt_policy_elem
+{
+ union xt_policy_addr saddr;
+ union xt_policy_addr smask;
+ union xt_policy_addr daddr;
+ union xt_policy_addr dmask;
+ u_int32_t spi;
+ u_int32_t reqid;
+ u_int8_t proto;
+ u_int8_t mode;
+
+ struct xt_policy_spec match;
+ struct xt_policy_spec invert;
+};
+
+struct xt_policy_info
+{
+ struct xt_policy_elem pol[XT_POLICY_MAX_ELEM];
+ u_int16_t flags;
+ u_int16_t len;
+};
+
+#endif /* _XT_POLICY_H */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.