From d34f0611975b1da6320112df00513ba42310f356 Mon Sep 17 00:00:00 2001 From: Tomasz Bursztyka Date: Fri, 13 Dec 2013 09:43:25 +0200 Subject: include: Update nftables API header in sync with kernel's one Many changes were missing. Signed-off-by: Tomasz Bursztyka Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter/nf_tables.h | 303 +++++++++++++++++++++++++++++++++++- 1 file changed, 296 insertions(+), 7 deletions(-) (limited to 'include') diff --git a/include/linux/netfilter/nf_tables.h b/include/linux/netfilter/nf_tables.h index 74c5f4ed..fbfd229a 100644 --- a/include/linux/netfilter/nf_tables.h +++ b/include/linux/netfilter/nf_tables.h @@ -1,6 +1,8 @@ #ifndef _LINUX_NF_TABLES_H #define _LINUX_NF_TABLES_H +#define NFT_CHAIN_MAXNAMELEN 32 + enum nft_registers { NFT_REG_VERDICT, NFT_REG_1, @@ -11,6 +13,17 @@ enum nft_registers { }; #define NFT_REG_MAX (__NFT_REG_MAX - 1) +/** + * enum nft_verdicts - nf_tables internal verdicts + * + * @NFT_CONTINUE: continue evaluation of the current rule + * @NFT_BREAK: terminate evaluation of the current rule + * @NFT_JUMP: push the current chain on the jump stack and jump to a chain + * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack + * @NFT_RETURN: return to the topmost chain on the jump stack + * + * The nf_tables verdicts share their numeric space with the netfilter verdicts. + */ enum nft_verdicts { NFT_CONTINUE = -1, NFT_BREAK = -2, @@ -19,6 +32,25 @@ enum nft_verdicts { NFT_RETURN = -5, }; +/** + * enum nf_tables_msg_types - nf_tables netlink message types + * + * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes) + * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes) + * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes) + * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes) + * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes) + * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes) + * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes) + * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes) + * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes) + * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes) + * @NFT_MSG_GETSET: get a set (enum nft_set_attributes) + * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes) + * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes) + * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes) + * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes) + */ enum nf_tables_msg_types { NFT_MSG_NEWTABLE, NFT_MSG_GETTABLE, @@ -38,6 +70,11 @@ enum nf_tables_msg_types { NFT_MSG_MAX, }; +/** + * enum nft_list_attributes - nf_tables generic list netlink attributes + * + * @NFTA_LIST_ELEM: list element (NLA_NESTED) + */ enum nft_list_attributes { NFTA_LIST_UNPEC, NFTA_LIST_ELEM, @@ -45,6 +82,12 @@ enum nft_list_attributes { }; #define NFTA_LIST_MAX (__NFTA_LIST_MAX - 1) +/** + * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes + * + * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32) + * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32) + */ enum nft_hook_attributes { NFTA_HOOK_UNSPEC, NFTA_HOOK_HOOKNUM, @@ -62,6 +105,12 @@ enum nft_table_flags { NFT_TABLE_F_DORMANT = 0x1, }; +/** + * enum nft_table_attributes - nf_tables table netlink attributes + * + * @NFTA_TABLE_NAME: name of the table (NLA_STRING) + * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32) + */ enum nft_table_attributes { NFTA_TABLE_UNSPEC, NFTA_TABLE_NAME, @@ -70,6 +119,18 @@ enum nft_table_attributes { }; #define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1) +/** + * enum nft_chain_attributes - nf_tables chain netlink attributes + * + * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING) + * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64) + * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING) + * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes) + * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32) + * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32) + * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING) + * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes) + */ enum nft_chain_attributes { NFTA_CHAIN_UNSPEC, NFTA_CHAIN_TABLE, @@ -79,27 +140,49 @@ enum nft_chain_attributes { NFTA_CHAIN_POLICY, NFTA_CHAIN_USE, NFTA_CHAIN_TYPE, + NFTA_CHAIN_COUNTERS, __NFTA_CHAIN_MAX }; #define NFTA_CHAIN_MAX (__NFTA_CHAIN_MAX - 1) +/** + * enum nft_rule_attributes - nf_tables rule netlink attributes + * + * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING) + * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING) + * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64) + * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes) + * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes) + * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64) + */ enum nft_rule_attributes { NFTA_RULE_UNSPEC, NFTA_RULE_TABLE, NFTA_RULE_CHAIN, NFTA_RULE_HANDLE, NFTA_RULE_EXPRESSIONS, - NFTA_RULE_FLAGS, NFTA_RULE_COMPAT, + NFTA_RULE_POSITION, __NFTA_RULE_MAX }; #define NFTA_RULE_MAX (__NFTA_RULE_MAX - 1) +/** + * enum nft_rule_compat_flags - nf_tables rule compat flags + * + * @NFT_RULE_COMPAT_F_INV: invert the check result + */ enum nft_rule_compat_flags { NFT_RULE_COMPAT_F_INV = (1 << 1), NFT_RULE_COMPAT_F_MASK = NFT_RULE_COMPAT_F_INV, }; +/** + * enum nft_rule_compat_attributes - nf_tables rule compat attributes + * + * @NFTA_RULE_COMPAT_PROTO: numerice value of handled protocol (NLA_U32) + * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32) + */ enum nft_rule_compat_attributes { NFTA_RULE_COMPAT_UNSPEC, NFTA_RULE_COMPAT_PROTO, @@ -209,6 +292,12 @@ enum nft_data_types { #define NFT_DATA_RESERVED_MASK 0xffffff00U +/** + * enum nft_data_attributes - nf_tables data netlink attributes + * + * @NFTA_DATA_VALUE: generic data (NLA_BINARY) + * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes) + */ enum nft_data_attributes { NFTA_DATA_UNSPEC, NFTA_DATA_VALUE, @@ -217,6 +306,12 @@ enum nft_data_attributes { }; #define NFTA_DATA_MAX (__NFTA_DATA_MAX - 1) +/** + * enum nft_verdict_attributes - nf_tables verdict netlink attributes + * + * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts) + * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING) + */ enum nft_verdict_attributes { NFTA_VERDICT_UNSPEC, NFTA_VERDICT_CODE, @@ -225,6 +320,12 @@ enum nft_verdict_attributes { }; #define NFTA_VERDICT_MAX (__NFTA_VERDICT_MAX - 1) +/** + * enum nft_expr_attributes - nf_tables expression netlink attributes + * + * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING) + * @NFTA_EXPR_DATA: type specific data (NLA_NESTED) + */ enum nft_expr_attributes { NFTA_EXPR_UNSPEC, NFTA_EXPR_NAME, @@ -233,6 +334,12 @@ enum nft_expr_attributes { }; #define NFTA_EXPR_MAX (__NFTA_EXPR_MAX - 1) +/** + * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes + * + * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32) + * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes) + */ enum nft_immediate_attributes { NFTA_IMMEDIATE_UNSPEC, NFTA_IMMEDIATE_DREG, @@ -241,6 +348,27 @@ enum nft_immediate_attributes { }; #define NFTA_IMMEDIATE_MAX (__NFTA_IMMEDIATE_MAX - 1) +/** + * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes + * + * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers) + * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers) + * @NFTA_BITWISE_LEN: length of operands (NLA_U32) + * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes) + * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes) + * + * The bitwise expression performs the following operation: + * + * dreg = (sreg & mask) ^ xor + * + * which allow to express all bitwise operations: + * + * mask xor + * NOT: 1 1 + * OR: 0 x + * XOR: 1 x + * AND: x 0 + */ enum nft_bitwise_attributes { NFTA_BITWISE_UNSPEC, NFTA_BITWISE_SREG, @@ -252,11 +380,26 @@ enum nft_bitwise_attributes { }; #define NFTA_BITWISE_MAX (__NFTA_BITWISE_MAX - 1) +/** + * enum nft_byteorder_ops - nf_tables byteorder operators + * + * @NFT_BYTEORDER_NTOH: network to host operator + * @NFT_BYTEORDER_HTON: host to network opertaor + */ enum nft_byteorder_ops { NFT_BYTEORDER_NTOH, NFT_BYTEORDER_HTON, }; +/** + * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes + * + * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers) + * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers) + * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops) + * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32) + * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4) + */ enum nft_byteorder_attributes { NFTA_BYTEORDER_UNSPEC, NFTA_BYTEORDER_SREG, @@ -268,6 +411,16 @@ enum nft_byteorder_attributes { }; #define NFTA_BYTEORDER_MAX (__NFTA_BYTEORDER_MAX - 1) +/** + * enum nft_cmp_ops - nf_tables relational operator + * + * @NFT_CMP_EQ: equal + * @NFT_CMP_NEQ: not equal + * @NFT_CMP_LT: less than + * @NFT_CMP_LTE: less than or equal to + * @NFT_CMP_GT: greater than + * @NFT_CMP_GTE: greater than or equal to + */ enum nft_cmp_ops { NFT_CMP_EQ, NFT_CMP_NEQ, @@ -277,6 +430,13 @@ enum nft_cmp_ops { NFT_CMP_GTE, }; +/** + * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes + * + * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers) + * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops) + * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes) + */ enum nft_cmp_attributes { NFTA_CMP_UNSPEC, NFTA_CMP_SREG, @@ -286,6 +446,13 @@ enum nft_cmp_attributes { }; #define NFTA_CMP_MAX (__NFTA_CMP_MAX - 1) +/** + * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes + * + * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING) + * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers) + * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers) + */ enum nft_lookup_attributes { NFTA_LOOKUP_UNSPEC, NFTA_LOOKUP_SET, @@ -295,12 +462,27 @@ enum nft_lookup_attributes { }; #define NFTA_LOOKUP_MAX (__NFTA_LOOKUP_MAX - 1) +/** + * enum nft_payload_bases - nf_tables payload expression offset bases + * + * @NFT_PAYLOAD_LL_HEADER: link layer header + * @NFT_PAYLOAD_NETWORK_HEADER: network header + * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header + */ enum nft_payload_bases { NFT_PAYLOAD_LL_HEADER, NFT_PAYLOAD_NETWORK_HEADER, NFT_PAYLOAD_TRANSPORT_HEADER, }; +/** + * enum nft_payload_attributes - nf_tables payload expression netlink attributes + * + * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers) + * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases) + * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32) + * @NFTA_PAYLOAD_LEN: payload length (NLA_U32) + */ enum nft_payload_attributes { NFTA_PAYLOAD_UNSPEC, NFTA_PAYLOAD_DREG, @@ -311,6 +493,14 @@ enum nft_payload_attributes { }; #define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1) +/** + * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes + * + * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers) + * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8) + * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32) + * @NFTA_EXTHDR_LEN: extension header length (NLA_U32) + */ enum nft_exthdr_attributes { NFTA_EXTHDR_UNSPEC, NFTA_EXTHDR_DREG, @@ -321,6 +511,25 @@ enum nft_exthdr_attributes { }; #define NFTA_EXTHDR_MAX (__NFTA_EXTHDR_MAX - 1) +/** + * enum nft_meta_keys - nf_tables meta expression keys + * + * @NFT_META_LEN: packet length (skb->len) + * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT + * @NFT_META_PRIORITY: packet priority (skb->priority) + * @NFT_META_MARK: packet mark (skb->mark) + * @NFT_META_IIF: packet input interface index (dev->ifindex) + * @NFT_META_OIF: packet output interface index (dev->ifindex) + * @NFT_META_IIFNAME: packet input interface name (dev->name) + * @NFT_META_OIFNAME: packet output interface name (dev->name) + * @NFT_META_IIFTYPE: packet input interface type (dev->type) + * @NFT_META_OIFTYPE: packet output interface type (dev->type) + * @NFT_META_SKUID: originating socket UID (fsuid) + * @NFT_META_SKGID: originating socket GID (fsgid) + * @NFT_META_NFTRACE: packet nftrace bit + * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid) + * @NFT_META_SECMARK: packet secmark (skb->secmark) + */ enum nft_meta_keys { NFT_META_LEN, NFT_META_PROTOCOL, @@ -339,6 +548,12 @@ enum nft_meta_keys { NFT_META_SECMARK, }; +/** + * enum nft_meta_attributes - nf_tables meta expression netlink attributes + * + * @NFTA_META_DREG: destination register (NLA_U32) + * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys) + */ enum nft_meta_attributes { NFTA_META_UNSPEC, NFTA_META_DREG, @@ -347,6 +562,23 @@ enum nft_meta_attributes { }; #define NFTA_META_MAX (__NFTA_META_MAX - 1) +/** + * enum nft_ct_keys - nf_tables ct expression keys + * + * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info) + * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir) + * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status) + * @NFT_CT_MARK: conntrack mark value + * @NFT_CT_SECMARK: conntrack secmark value + * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms + * @NFT_CT_HELPER: connection tracking helper assigned to conntrack + * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol + * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address) + * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address) + * @NFT_CT_PROTOCOL: conntrack layer 4 protocol + * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source + * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination + */ enum nft_ct_keys { NFT_CT_STATE, NFT_CT_DIRECTION, @@ -355,13 +587,21 @@ enum nft_ct_keys { NFT_CT_SECMARK, NFT_CT_EXPIRATION, NFT_CT_HELPER, - NFT_CT_PROTOCOL, + NFT_CT_L3PROTOCOL, NFT_CT_SRC, NFT_CT_DST, + NFT_CT_PROTOCOL, NFT_CT_PROTO_SRC, NFT_CT_PROTO_DST, }; +/** + * enum nft_ct_attributes - nf_tables ct expression netlink attributes + * + * @NFTA_CT_DREG: destination register (NLA_U32) + * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys) + * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8) + */ enum nft_ct_attributes { NFTA_CT_UNSPEC, NFTA_CT_DREG, @@ -371,14 +611,26 @@ enum nft_ct_attributes { }; #define NFTA_CT_MAX (__NFTA_CT_MAX - 1) +/** + * enum nft_limit_attributes - nf_tables limit expression netlink attributes + * + * @NFTA_LIMIT_RATE: refill rate (NLA_U64) + * @NFTA_LIMIT_UNIT: refill unit (NLA_U64) + */ enum nft_limit_attributes { NFTA_LIMIT_UNSPEC, NFTA_LIMIT_RATE, - NFTA_LIMIT_DEPTH, + NFTA_LIMIT_UNIT, __NFTA_LIMIT_MAX }; #define NFTA_LIMIT_MAX (__NFTA_LIMIT_MAX - 1) +/** + * enum nft_counter_attributes - nf_tables counter expression netlink attributes + * + * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64) + * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64) + */ enum nft_counter_attributes { NFTA_COUNTER_UNSPEC, NFTA_COUNTER_BYTES, @@ -387,6 +639,14 @@ enum nft_counter_attributes { }; #define NFTA_COUNTER_MAX (__NFTA_COUNTER_MAX - 1) +/** + * enum nft_log_attributes - nf_tables log expression netlink attributes + * + * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32) + * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING) + * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32) + * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32) + */ enum nft_log_attributes { NFTA_LOG_UNSPEC, NFTA_LOG_GROUP, @@ -397,11 +657,23 @@ enum nft_log_attributes { }; #define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1) +/** + * enum nft_reject_types - nf_tables reject expression reject types + * + * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable + * @NFT_REJECT_TCP_RST: reject using TCP RST + */ enum nft_reject_types { NFT_REJECT_ICMP_UNREACH, NFT_REJECT_TCP_RST, }; +/** + * enum nft_reject_attributes - nf_tables reject expression netlink attributes + * + * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types) + * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8) + */ enum nft_reject_attributes { NFTA_REJECT_UNSPEC, NFTA_REJECT_TYPE, @@ -410,18 +682,35 @@ enum nft_reject_attributes { }; #define NFTA_REJECT_MAX (__NFTA_REJECT_MAX - 1) +/** + * enum nft_nat_types - nf_tables nat expression NAT types + * + * @NFT_NAT_SNAT: source NAT + * @NFT_NAT_DNAT: destination NAT + */ enum nft_nat_types { NFT_NAT_SNAT, NFT_NAT_DNAT, }; +/** + * enum nft_nat_attributes - nf_tables nat expression netlink attributes + * + * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types) + * @NFTA_NAT_FAMILY: NAT family (NLA_U32) + * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers) + * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers) + * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers) + * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers) + */ enum nft_nat_attributes { NFTA_NAT_UNSPEC, NFTA_NAT_TYPE, - NFTA_NAT_ADDR_MIN, - NFTA_NAT_ADDR_MAX, - NFTA_NAT_PROTO_MIN, - NFTA_NAT_PROTO_MAX, + NFTA_NAT_FAMILY, + NFTA_NAT_REG_ADDR_MIN, + NFTA_NAT_REG_ADDR_MAX, + NFTA_NAT_REG_PROTO_MIN, + NFTA_NAT_REG_PROTO_MAX, __NFTA_NAT_MAX }; #define NFTA_NAT_MAX (__NFTA_NAT_MAX - 1) -- cgit v1.2.3