1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 296518518SPatrick McHardy #ifndef _NET_NF_TABLES_H 396518518SPatrick McHardy #define _NET_NF_TABLES_H 496518518SPatrick McHardy 5a1b840adSAnder Juaristi #include <asm/unaligned.h> 696518518SPatrick McHardy #include <linux/list.h> 796518518SPatrick McHardy #include <linux/netfilter.h> 867a8fc27SPatrick McHardy #include <linux/netfilter/nfnetlink.h> 90ca743a5SPablo Neira Ayuso #include <linux/netfilter/x_tables.h> 1096518518SPatrick McHardy #include <linux/netfilter/nf_tables.h> 11ce355e20SEric Dumazet #include <linux/u64_stats_sync.h> 121b2470e5SFlorian Westphal #include <linux/rhashtable.h> 133b49e2e9SPablo Neira Ayuso #include <net/netfilter/nf_flow_table.h> 1496518518SPatrick McHardy #include <net/netlink.h> 1514bfb13fSPablo Neira Ayuso #include <net/flow_offload.h> 1696518518SPatrick McHardy 17a4cb98f3SPaul Gortmaker struct module; 18a4cb98f3SPaul Gortmaker 1920a69341SPatrick McHardy #define NFT_JUMP_STACK_SIZE 16 2020a69341SPatrick McHardy 2196518518SPatrick McHardy struct nft_pktinfo { 2296518518SPatrick McHardy struct sk_buff *skb; 23beac5afaSPablo Neira Ayuso bool tprot_set; 244566bf27SPatrick McHardy u8 tprot; 250ca743a5SPablo Neira Ayuso /* for x_tables compatibility */ 260ca743a5SPablo Neira Ayuso struct xt_action_param xt; 2796518518SPatrick McHardy }; 2896518518SPatrick McHardy 290e5a1c7eSPablo Neira Ayuso static inline struct net *nft_net(const struct nft_pktinfo *pkt) 300e5a1c7eSPablo Neira Ayuso { 310e5a1c7eSPablo Neira Ayuso return pkt->xt.state->net; 320e5a1c7eSPablo Neira Ayuso } 330e5a1c7eSPablo Neira Ayuso 340e5a1c7eSPablo Neira Ayuso static inline unsigned int nft_hook(const struct nft_pktinfo *pkt) 350e5a1c7eSPablo Neira Ayuso { 360e5a1c7eSPablo Neira Ayuso return pkt->xt.state->hook; 370e5a1c7eSPablo Neira Ayuso } 380e5a1c7eSPablo Neira Ayuso 390e5a1c7eSPablo Neira Ayuso static inline u8 nft_pf(const struct nft_pktinfo *pkt) 400e5a1c7eSPablo Neira Ayuso { 410e5a1c7eSPablo Neira Ayuso return pkt->xt.state->pf; 420e5a1c7eSPablo Neira Ayuso } 430e5a1c7eSPablo Neira Ayuso 440e5a1c7eSPablo Neira Ayuso static inline const struct net_device *nft_in(const struct nft_pktinfo *pkt) 450e5a1c7eSPablo Neira Ayuso { 460e5a1c7eSPablo Neira Ayuso return pkt->xt.state->in; 470e5a1c7eSPablo Neira Ayuso } 480e5a1c7eSPablo Neira Ayuso 490e5a1c7eSPablo Neira Ayuso static inline const struct net_device *nft_out(const struct nft_pktinfo *pkt) 500e5a1c7eSPablo Neira Ayuso { 510e5a1c7eSPablo Neira Ayuso return pkt->xt.state->out; 520e5a1c7eSPablo Neira Ayuso } 530e5a1c7eSPablo Neira Ayuso 540ca743a5SPablo Neira Ayuso static inline void nft_set_pktinfo(struct nft_pktinfo *pkt, 550ca743a5SPablo Neira Ayuso struct sk_buff *skb, 56073bfd56SDavid S. Miller const struct nf_hook_state *state) 570ca743a5SPablo Neira Ayuso { 580ca743a5SPablo Neira Ayuso pkt->skb = skb; 59613dbd95SPablo Neira Ayuso pkt->xt.state = state; 600ca743a5SPablo Neira Ayuso } 610ca743a5SPablo Neira Ayuso 627a4473a3SPablo Neira Ayuso static inline void nft_set_pktinfo_unspec(struct nft_pktinfo *pkt, 63beac5afaSPablo Neira Ayuso struct sk_buff *skb) 64beac5afaSPablo Neira Ayuso { 65beac5afaSPablo Neira Ayuso pkt->tprot_set = false; 66beac5afaSPablo Neira Ayuso pkt->tprot = 0; 67beac5afaSPablo Neira Ayuso pkt->xt.thoff = 0; 68beac5afaSPablo Neira Ayuso pkt->xt.fragoff = 0; 69beac5afaSPablo Neira Ayuso } 70beac5afaSPablo Neira Ayuso 71a55e22e9SPatrick McHardy /** 72a55e22e9SPatrick McHardy * struct nft_verdict - nf_tables verdict 73a55e22e9SPatrick McHardy * 74a55e22e9SPatrick McHardy * @code: nf_tables/netfilter verdict code 75a55e22e9SPatrick McHardy * @chain: destination chain for NFT_JUMP/NFT_GOTO 76a55e22e9SPatrick McHardy */ 77a55e22e9SPatrick McHardy struct nft_verdict { 78a55e22e9SPatrick McHardy u32 code; 79a55e22e9SPatrick McHardy struct nft_chain *chain; 80a55e22e9SPatrick McHardy }; 81a55e22e9SPatrick McHardy 8296518518SPatrick McHardy struct nft_data { 8396518518SPatrick McHardy union { 8496518518SPatrick McHardy u32 data[4]; 851ca2e170SPatrick McHardy struct nft_verdict verdict; 8696518518SPatrick McHardy }; 8796518518SPatrick McHardy } __attribute__((aligned(__alignof__(u64)))); 8896518518SPatrick McHardy 89a55e22e9SPatrick McHardy /** 90a55e22e9SPatrick McHardy * struct nft_regs - nf_tables register set 91a55e22e9SPatrick McHardy * 92a55e22e9SPatrick McHardy * @data: data registers 93a55e22e9SPatrick McHardy * @verdict: verdict register 94a55e22e9SPatrick McHardy * 95a55e22e9SPatrick McHardy * The first four data registers alias to the verdict register. 96a55e22e9SPatrick McHardy */ 97a55e22e9SPatrick McHardy struct nft_regs { 98a55e22e9SPatrick McHardy union { 9949499c3eSPatrick McHardy u32 data[20]; 100a55e22e9SPatrick McHardy struct nft_verdict verdict; 101a55e22e9SPatrick McHardy }; 102a55e22e9SPatrick McHardy }; 103a55e22e9SPatrick McHardy 104a1b840adSAnder Juaristi /* Store/load an u8, u16 or u64 integer to/from the u32 data register. 10510596608SLiping Zhang * 10610596608SLiping Zhang * Note, when using concatenations, register allocation happens at 32-bit 10710596608SLiping Zhang * level. So for store instruction, pad the rest part with zero to avoid 10810596608SLiping Zhang * garbage values. 10910596608SLiping Zhang */ 11010596608SLiping Zhang 11110596608SLiping Zhang static inline void nft_reg_store8(u32 *dreg, u8 val) 11210596608SLiping Zhang { 11310596608SLiping Zhang *dreg = 0; 11410596608SLiping Zhang *(u8 *)dreg = val; 11510596608SLiping Zhang } 11610596608SLiping Zhang 1177cd9a58dSPablo Neira Ayuso static inline u8 nft_reg_load8(const u32 *sreg) 118a1b840adSAnder Juaristi { 119a1b840adSAnder Juaristi return *(u8 *)sreg; 120a1b840adSAnder Juaristi } 121a1b840adSAnder Juaristi 122a1b840adSAnder Juaristi static inline void nft_reg_store16(u32 *dreg, u16 val) 123a1b840adSAnder Juaristi { 124a1b840adSAnder Juaristi *dreg = 0; 125a1b840adSAnder Juaristi *(u16 *)dreg = val; 126a1b840adSAnder Juaristi } 127a1b840adSAnder Juaristi 1287cd9a58dSPablo Neira Ayuso static inline u16 nft_reg_load16(const u32 *sreg) 12910596608SLiping Zhang { 13010596608SLiping Zhang return *(u16 *)sreg; 13110596608SLiping Zhang } 13210596608SLiping Zhang 133a1b840adSAnder Juaristi static inline void nft_reg_store64(u32 *dreg, u64 val) 13410596608SLiping Zhang { 135a1b840adSAnder Juaristi put_unaligned(val, (u64 *)dreg); 136a1b840adSAnder Juaristi } 137a1b840adSAnder Juaristi 1387cd9a58dSPablo Neira Ayuso static inline u64 nft_reg_load64(const u32 *sreg) 139a1b840adSAnder Juaristi { 140a1b840adSAnder Juaristi return get_unaligned((u64 *)sreg); 14110596608SLiping Zhang } 14210596608SLiping Zhang 14349499c3eSPatrick McHardy static inline void nft_data_copy(u32 *dst, const struct nft_data *src, 14449499c3eSPatrick McHardy unsigned int len) 14596518518SPatrick McHardy { 14649499c3eSPatrick McHardy memcpy(dst, src, len); 14796518518SPatrick McHardy } 14896518518SPatrick McHardy 14996518518SPatrick McHardy static inline void nft_data_debug(const struct nft_data *data) 15096518518SPatrick McHardy { 15196518518SPatrick McHardy pr_debug("data[0]=%x data[1]=%x data[2]=%x data[3]=%x\n", 15296518518SPatrick McHardy data->data[0], data->data[1], 15396518518SPatrick McHardy data->data[2], data->data[3]); 15496518518SPatrick McHardy } 15596518518SPatrick McHardy 15696518518SPatrick McHardy /** 15720a69341SPatrick McHardy * struct nft_ctx - nf_tables rule/set context 15896518518SPatrick McHardy * 15999633ab2SPablo Neira Ayuso * @net: net namespace 16096518518SPatrick McHardy * @table: the table the chain is contained in 16196518518SPatrick McHardy * @chain: the chain the rule is contained in 1620ca743a5SPablo Neira Ayuso * @nla: netlink attributes 163128ad332SPablo Neira Ayuso * @portid: netlink portID of the original message 164128ad332SPablo Neira Ayuso * @seq: netlink sequence number 16536596dadSPablo Neira Ayuso * @family: protocol family 16626b2f552STaehee Yoo * @level: depth of the chains 167128ad332SPablo Neira Ayuso * @report: notify via unicast netlink message 16896518518SPatrick McHardy */ 16996518518SPatrick McHardy struct nft_ctx { 17099633ab2SPablo Neira Ayuso struct net *net; 1717c95f6d8SPablo Neira Ayuso struct nft_table *table; 1727c95f6d8SPablo Neira Ayuso struct nft_chain *chain; 1730ca743a5SPablo Neira Ayuso const struct nlattr * const *nla; 174128ad332SPablo Neira Ayuso u32 portid; 175128ad332SPablo Neira Ayuso u32 seq; 176c9626a2cSPablo Neira Ayuso u16 flags; 17736596dadSPablo Neira Ayuso u8 family; 17826b2f552STaehee Yoo u8 level; 179128ad332SPablo Neira Ayuso bool report; 18096518518SPatrick McHardy }; 18196518518SPatrick McHardy 18296518518SPatrick McHardy struct nft_data_desc { 18396518518SPatrick McHardy enum nft_data_types type; 18496518518SPatrick McHardy unsigned int len; 18596518518SPatrick McHardy }; 18696518518SPatrick McHardy 187d0a11fc3SPatrick McHardy int nft_data_init(const struct nft_ctx *ctx, 188d0a11fc3SPatrick McHardy struct nft_data *data, unsigned int size, 18996518518SPatrick McHardy struct nft_data_desc *desc, const struct nlattr *nla); 190bb7b40aeSPablo Neira Ayuso void nft_data_hold(const struct nft_data *data, enum nft_data_types type); 19159105446SPablo Neira Ayuso void nft_data_release(const struct nft_data *data, enum nft_data_types type); 1925eccdfaaSJoe Perches int nft_data_dump(struct sk_buff *skb, int attr, const struct nft_data *data, 19396518518SPatrick McHardy enum nft_data_types type, unsigned int len); 19496518518SPatrick McHardy 19596518518SPatrick McHardy static inline enum nft_data_types nft_dreg_to_type(enum nft_registers reg) 19696518518SPatrick McHardy { 19796518518SPatrick McHardy return reg == NFT_REG_VERDICT ? NFT_DATA_VERDICT : NFT_DATA_VALUE; 19896518518SPatrick McHardy } 19996518518SPatrick McHardy 20020a69341SPatrick McHardy static inline enum nft_registers nft_type_to_reg(enum nft_data_types type) 20120a69341SPatrick McHardy { 202bf798657SPablo Neira Ayuso return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1 * NFT_REG_SIZE / NFT_REG32_SIZE; 20320a69341SPatrick McHardy } 20420a69341SPatrick McHardy 205f1d505bbSJohn W. Linville int nft_parse_u32_check(const struct nlattr *attr, int max, u32 *dest); 206b1c96ed3SPatrick McHardy unsigned int nft_parse_register(const struct nlattr *attr); 207b1c96ed3SPatrick McHardy int nft_dump_register(struct sk_buff *skb, unsigned int attr, unsigned int reg); 208b1c96ed3SPatrick McHardy 209d07db988SPatrick McHardy int nft_validate_register_load(enum nft_registers reg, unsigned int len); 2101ec10212SPatrick McHardy int nft_validate_register_store(const struct nft_ctx *ctx, 2111ec10212SPatrick McHardy enum nft_registers reg, 21296518518SPatrick McHardy const struct nft_data *data, 21345d9bcdaSPatrick McHardy enum nft_data_types type, unsigned int len); 21496518518SPatrick McHardy 21586f1ec32SPatrick McHardy /** 21686f1ec32SPatrick McHardy * struct nft_userdata - user defined data associated with an object 21786f1ec32SPatrick McHardy * 21886f1ec32SPatrick McHardy * @len: length of the data 21986f1ec32SPatrick McHardy * @data: content 22086f1ec32SPatrick McHardy * 22186f1ec32SPatrick McHardy * The presence of user data is indicated in an object specific fashion, 22286f1ec32SPatrick McHardy * so a length of zero can't occur and the value "len" indicates data 22386f1ec32SPatrick McHardy * of length len + 1. 22486f1ec32SPatrick McHardy */ 22586f1ec32SPatrick McHardy struct nft_userdata { 22686f1ec32SPatrick McHardy u8 len; 2276daf1414SGustavo A. R. Silva unsigned char data[]; 22886f1ec32SPatrick McHardy }; 22986f1ec32SPatrick McHardy 23096518518SPatrick McHardy /** 23120a69341SPatrick McHardy * struct nft_set_elem - generic representation of set elements 23220a69341SPatrick McHardy * 23320a69341SPatrick McHardy * @key: element key 2347b225d0bSPablo Neira Ayuso * @key_end: closing element key 235fe2811ebSPatrick McHardy * @priv: element private data and extensions 23620a69341SPatrick McHardy */ 23720a69341SPatrick McHardy struct nft_set_elem { 2387d740264SPatrick McHardy union { 2397d740264SPatrick McHardy u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; 2407d740264SPatrick McHardy struct nft_data val; 2417d740264SPatrick McHardy } key; 2427b225d0bSPablo Neira Ayuso union { 2437b225d0bSPablo Neira Ayuso u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; 2447b225d0bSPablo Neira Ayuso struct nft_data val; 2457b225d0bSPablo Neira Ayuso } key_end; 246fe2811ebSPatrick McHardy void *priv; 24720a69341SPatrick McHardy }; 24820a69341SPatrick McHardy 24920a69341SPatrick McHardy struct nft_set; 25020a69341SPatrick McHardy struct nft_set_iter { 2518588ac09SPablo Neira Ayuso u8 genmask; 25220a69341SPatrick McHardy unsigned int count; 25320a69341SPatrick McHardy unsigned int skip; 25420a69341SPatrick McHardy int err; 25520a69341SPatrick McHardy int (*fn)(const struct nft_ctx *ctx, 256de70185dSPablo Neira Ayuso struct nft_set *set, 25720a69341SPatrick McHardy const struct nft_set_iter *iter, 258de70185dSPablo Neira Ayuso struct nft_set_elem *elem); 25920a69341SPatrick McHardy }; 26020a69341SPatrick McHardy 26120a69341SPatrick McHardy /** 262c50b960cSPatrick McHardy * struct nft_set_desc - description of set elements 263c50b960cSPatrick McHardy * 264c50b960cSPatrick McHardy * @klen: key length 265c50b960cSPatrick McHardy * @dlen: data length 266c50b960cSPatrick McHardy * @size: number of set elements 267f3a2181eSStefano Brivio * @field_len: length of each field in concatenation, bytes 268f3a2181eSStefano Brivio * @field_count: number of concatenated fields in element 269d56aab26SPablo Neira Ayuso * @expr: set must support for expressions 270c50b960cSPatrick McHardy */ 271c50b960cSPatrick McHardy struct nft_set_desc { 272c50b960cSPatrick McHardy unsigned int klen; 273c50b960cSPatrick McHardy unsigned int dlen; 274c50b960cSPatrick McHardy unsigned int size; 275f3a2181eSStefano Brivio u8 field_len[NFT_REG32_COUNT]; 276f3a2181eSStefano Brivio u8 field_count; 277d56aab26SPablo Neira Ayuso bool expr; 278c50b960cSPatrick McHardy }; 279c50b960cSPatrick McHardy 280c50b960cSPatrick McHardy /** 281c50b960cSPatrick McHardy * enum nft_set_class - performance class 282c50b960cSPatrick McHardy * 283c50b960cSPatrick McHardy * @NFT_LOOKUP_O_1: constant, O(1) 284c50b960cSPatrick McHardy * @NFT_LOOKUP_O_LOG_N: logarithmic, O(log N) 285c50b960cSPatrick McHardy * @NFT_LOOKUP_O_N: linear, O(N) 286c50b960cSPatrick McHardy */ 287c50b960cSPatrick McHardy enum nft_set_class { 288c50b960cSPatrick McHardy NFT_SET_CLASS_O_1, 289c50b960cSPatrick McHardy NFT_SET_CLASS_O_LOG_N, 290c50b960cSPatrick McHardy NFT_SET_CLASS_O_N, 291c50b960cSPatrick McHardy }; 292c50b960cSPatrick McHardy 293c50b960cSPatrick McHardy /** 294c50b960cSPatrick McHardy * struct nft_set_estimate - estimation of memory and performance 295c50b960cSPatrick McHardy * characteristics 296c50b960cSPatrick McHardy * 297c50b960cSPatrick McHardy * @size: required memory 29855af753cSPablo Neira Ayuso * @lookup: lookup performance class 2990b5a7874SPablo Neira Ayuso * @space: memory class 300c50b960cSPatrick McHardy */ 301c50b960cSPatrick McHardy struct nft_set_estimate { 3024ef360ddSTaehee Yoo u64 size; 30355af753cSPablo Neira Ayuso enum nft_set_class lookup; 3040b5a7874SPablo Neira Ayuso enum nft_set_class space; 305c50b960cSPatrick McHardy }; 306c50b960cSPatrick McHardy 307b2832dd6SPatrick McHardy struct nft_set_ext; 30822fe54d5SPatrick McHardy struct nft_expr; 309b2832dd6SPatrick McHardy 310c50b960cSPatrick McHardy /** 31120a69341SPatrick McHardy * struct nft_set_ops - nf_tables set operations 31220a69341SPatrick McHardy * 31320a69341SPatrick McHardy * @lookup: look up an element within the set 314d0a8d877SAnder Juaristi * @update: update an element if exists, add it if doesn't exist 315d0a8d877SAnder Juaristi * @delete: delete an element 31620a69341SPatrick McHardy * @insert: insert new element into set 317cc02e457SPatrick McHardy * @activate: activate new element in the next generation 3188411b644SPablo Neira Ayuso * @deactivate: lookup for element and deactivate it in the next generation 3191ba1c414SPablo Neira Ayuso * @flush: deactivate element in the next generation 32020a69341SPatrick McHardy * @remove: remove element from set 321d0a8d877SAnder Juaristi * @walk: iterate over all set elements 322ba0e4d99SPablo Neira Ayuso * @get: get set elements 32320a69341SPatrick McHardy * @privsize: function to return size of set private data 32420a69341SPatrick McHardy * @init: initialize private data of new set instance 32520a69341SPatrick McHardy * @destroy: destroy private data of set instance 326fe2811ebSPatrick McHardy * @elemsize: element private size 327d0a8d877SAnder Juaristi * 328d0a8d877SAnder Juaristi * Operations lookup, update and delete have simpler interfaces, are faster 329d0a8d877SAnder Juaristi * and currently only used in the packet path. All the rest are slower, 330d0a8d877SAnder Juaristi * control plane functions. 33120a69341SPatrick McHardy */ 33220a69341SPatrick McHardy struct nft_set_ops { 33342a55769SPablo Neira Ayuso bool (*lookup)(const struct net *net, 33442a55769SPablo Neira Ayuso const struct nft_set *set, 3358cd8937aSPatrick McHardy const u32 *key, 336b2832dd6SPatrick McHardy const struct nft_set_ext **ext); 33722fe54d5SPatrick McHardy bool (*update)(struct nft_set *set, 3388cd8937aSPatrick McHardy const u32 *key, 33922fe54d5SPatrick McHardy void *(*new)(struct nft_set *, 34022fe54d5SPatrick McHardy const struct nft_expr *, 341a55e22e9SPatrick McHardy struct nft_regs *), 34222fe54d5SPatrick McHardy const struct nft_expr *expr, 343a55e22e9SPatrick McHardy struct nft_regs *regs, 34422fe54d5SPatrick McHardy const struct nft_set_ext **ext); 345d0a8d877SAnder Juaristi bool (*delete)(const struct nft_set *set, 346d0a8d877SAnder Juaristi const u32 *key); 34722fe54d5SPatrick McHardy 34842a55769SPablo Neira Ayuso int (*insert)(const struct net *net, 34942a55769SPablo Neira Ayuso const struct nft_set *set, 350c016c7e4SPablo Neira Ayuso const struct nft_set_elem *elem, 351c016c7e4SPablo Neira Ayuso struct nft_set_ext **ext); 35242a55769SPablo Neira Ayuso void (*activate)(const struct net *net, 35342a55769SPablo Neira Ayuso const struct nft_set *set, 354cc02e457SPatrick McHardy const struct nft_set_elem *elem); 35542a55769SPablo Neira Ayuso void * (*deactivate)(const struct net *net, 35642a55769SPablo Neira Ayuso const struct nft_set *set, 357cc02e457SPatrick McHardy const struct nft_set_elem *elem); 3581ba1c414SPablo Neira Ayuso bool (*flush)(const struct net *net, 3598411b644SPablo Neira Ayuso const struct nft_set *set, 3608411b644SPablo Neira Ayuso void *priv); 3615cb82a38SPablo Neira Ayuso void (*remove)(const struct net *net, 3625cb82a38SPablo Neira Ayuso const struct nft_set *set, 36320a69341SPatrick McHardy const struct nft_set_elem *elem); 36420a69341SPatrick McHardy void (*walk)(const struct nft_ctx *ctx, 365de70185dSPablo Neira Ayuso struct nft_set *set, 36620a69341SPatrick McHardy struct nft_set_iter *iter); 367ba0e4d99SPablo Neira Ayuso void * (*get)(const struct net *net, 368ba0e4d99SPablo Neira Ayuso const struct nft_set *set, 369ba0e4d99SPablo Neira Ayuso const struct nft_set_elem *elem, 370ba0e4d99SPablo Neira Ayuso unsigned int flags); 37120a69341SPatrick McHardy 3724ef360ddSTaehee Yoo u64 (*privsize)(const struct nlattr * const nla[], 373347b408dSPablo Neira Ayuso const struct nft_set_desc *desc); 374c50b960cSPatrick McHardy bool (*estimate)(const struct nft_set_desc *desc, 375c50b960cSPatrick McHardy u32 features, 376c50b960cSPatrick McHardy struct nft_set_estimate *est); 37720a69341SPatrick McHardy int (*init)(const struct nft_set *set, 378c50b960cSPatrick McHardy const struct nft_set_desc *desc, 37920a69341SPatrick McHardy const struct nlattr * const nla[]); 38020a69341SPatrick McHardy void (*destroy)(const struct nft_set *set); 38179b174adSPablo Neira Ayuso void (*gc_init)(const struct nft_set *set); 38220a69341SPatrick McHardy 383fe2811ebSPatrick McHardy unsigned int elemsize; 38420a69341SPatrick McHardy }; 38520a69341SPatrick McHardy 38671cc0873SPhil Sutter /** 38771cc0873SPhil Sutter * struct nft_set_type - nf_tables set type 38871cc0873SPhil Sutter * 38971cc0873SPhil Sutter * @ops: set ops for this type 39071cc0873SPhil Sutter * @features: features supported by the implementation 39171cc0873SPhil Sutter */ 39271cc0873SPhil Sutter struct nft_set_type { 39371cc0873SPhil Sutter const struct nft_set_ops ops; 39471cc0873SPhil Sutter u32 features; 39571cc0873SPhil Sutter }; 39671cc0873SPhil Sutter #define to_set_type(o) container_of(o, struct nft_set_type, ops) 39771cc0873SPhil Sutter 39820a69341SPatrick McHardy /** 39920a69341SPatrick McHardy * struct nft_set - nf_tables set instance 40020a69341SPatrick McHardy * 40120a69341SPatrick McHardy * @list: table set list node 40220a69341SPatrick McHardy * @bindings: list of set bindings 4033453c927SPablo Neira Ayuso * @table: table this set belongs to 4043453c927SPablo Neira Ayuso * @net: netnamespace this set belongs to 40520a69341SPatrick McHardy * @name: name of the set 4063ecbfd65SHarsha Sharma * @handle: unique handle of the set 40720a69341SPatrick McHardy * @ktype: key type (numeric type defined by userspace, not used in the kernel) 40820a69341SPatrick McHardy * @dtype: data type (verdict or numeric type defined by userspace) 4098aeff920SPablo Neira Ayuso * @objtype: object type (see NFT_OBJECT_* definitions) 410c50b960cSPatrick McHardy * @size: maximum set size 411f3a2181eSStefano Brivio * @field_len: length of each field in concatenation, bytes 412f3a2181eSStefano Brivio * @field_count: number of concatenated fields in element 413273fe3f1SPablo Neira Ayuso * @use: number of rules references to this set 414c50b960cSPatrick McHardy * @nelems: number of elements 4153dd0673aSPatrick McHardy * @ndeact: number of deactivated elements queued for removal 416d3e2a111SAnders K. Pedersen * @timeout: default timeout value in jiffies 417761da293SPatrick McHardy * @gc_int: garbage collection interval in msecs 4189363dc4bSArturo Borrero * @policy: set parameterization (see enum nft_set_policies) 419e6d8ecacSCarlos Falgueras García * @udlen: user data length 420e6d8ecacSCarlos Falgueras García * @udata: user data 42165038428SPablo Neira Ayuso * @expr: stateful expression 42220a69341SPatrick McHardy * @ops: set ops 42320a69341SPatrick McHardy * @flags: set flags 42437a9cc52SPablo Neira Ayuso * @genmask: generation mask 42520a69341SPatrick McHardy * @klen: key length 42620a69341SPatrick McHardy * @dlen: data length 42720a69341SPatrick McHardy * @data: private set data 42820a69341SPatrick McHardy */ 42920a69341SPatrick McHardy struct nft_set { 43020a69341SPatrick McHardy struct list_head list; 43120a69341SPatrick McHardy struct list_head bindings; 4323453c927SPablo Neira Ayuso struct nft_table *table; 4333453c927SPablo Neira Ayuso possible_net_t net; 43438745490SPhil Sutter char *name; 4353ecbfd65SHarsha Sharma u64 handle; 43620a69341SPatrick McHardy u32 ktype; 43720a69341SPatrick McHardy u32 dtype; 4388aeff920SPablo Neira Ayuso u32 objtype; 439c50b960cSPatrick McHardy u32 size; 440f3a2181eSStefano Brivio u8 field_len[NFT_REG32_COUNT]; 441f3a2181eSStefano Brivio u8 field_count; 442273fe3f1SPablo Neira Ayuso u32 use; 4433dd0673aSPatrick McHardy atomic_t nelems; 4443dd0673aSPatrick McHardy u32 ndeact; 445761da293SPatrick McHardy u64 timeout; 446761da293SPatrick McHardy u32 gc_int; 4479363dc4bSArturo Borrero u16 policy; 448e6d8ecacSCarlos Falgueras García u16 udlen; 449e6d8ecacSCarlos Falgueras García unsigned char *udata; 45065038428SPablo Neira Ayuso struct nft_expr *expr; 45120a69341SPatrick McHardy /* runtime data below here */ 45220a69341SPatrick McHardy const struct nft_set_ops *ops ____cacheline_aligned; 4536a0a8d10SPablo Neira Ayuso u16 flags:14, 45437a9cc52SPablo Neira Ayuso genmask:2; 45520a69341SPatrick McHardy u8 klen; 45620a69341SPatrick McHardy u8 dlen; 45720a69341SPatrick McHardy unsigned char data[] 45820a69341SPatrick McHardy __attribute__((aligned(__alignof__(u64)))); 45920a69341SPatrick McHardy }; 46020a69341SPatrick McHardy 461408070d6SPablo Neira Ayuso static inline bool nft_set_is_anonymous(const struct nft_set *set) 462408070d6SPablo Neira Ayuso { 463408070d6SPablo Neira Ayuso return set->flags & NFT_SET_ANONYMOUS; 464408070d6SPablo Neira Ayuso } 465408070d6SPablo Neira Ayuso 46620a69341SPatrick McHardy static inline void *nft_set_priv(const struct nft_set *set) 46720a69341SPatrick McHardy { 46820a69341SPatrick McHardy return (void *)set->data; 46920a69341SPatrick McHardy } 47020a69341SPatrick McHardy 4719d098292SPatrick McHardy static inline struct nft_set *nft_set_container_of(const void *priv) 4729d098292SPatrick McHardy { 4739d098292SPatrick McHardy return (void *)priv - offsetof(struct nft_set, data); 4749d098292SPatrick McHardy } 4759d098292SPatrick McHardy 47610659cbaSPablo Neira Ayuso struct nft_set *nft_set_lookup_global(const struct net *net, 477c7a72e3fSPablo Neira Ayuso const struct nft_table *table, 478c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_name, 479c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_id, 480c7a72e3fSPablo Neira Ayuso u8 genmask); 48120a69341SPatrick McHardy 482761da293SPatrick McHardy static inline unsigned long nft_set_gc_interval(const struct nft_set *set) 483761da293SPatrick McHardy { 484761da293SPatrick McHardy return set->gc_int ? msecs_to_jiffies(set->gc_int) : HZ; 485761da293SPatrick McHardy } 486761da293SPatrick McHardy 48720a69341SPatrick McHardy /** 48820a69341SPatrick McHardy * struct nft_set_binding - nf_tables set binding 48920a69341SPatrick McHardy * 49020a69341SPatrick McHardy * @list: set bindings list node 49120a69341SPatrick McHardy * @chain: chain containing the rule bound to the set 49211113e19SPatrick McHardy * @flags: set action flags 49320a69341SPatrick McHardy * 49420a69341SPatrick McHardy * A set binding contains all information necessary for validation 49520a69341SPatrick McHardy * of new elements added to a bound set. 49620a69341SPatrick McHardy */ 49720a69341SPatrick McHardy struct nft_set_binding { 49820a69341SPatrick McHardy struct list_head list; 49920a69341SPatrick McHardy const struct nft_chain *chain; 50011113e19SPatrick McHardy u32 flags; 50120a69341SPatrick McHardy }; 50220a69341SPatrick McHardy 503273fe3f1SPablo Neira Ayuso enum nft_trans_phase; 504273fe3f1SPablo Neira Ayuso void nf_tables_deactivate_set(const struct nft_ctx *ctx, struct nft_set *set, 505273fe3f1SPablo Neira Ayuso struct nft_set_binding *binding, 506273fe3f1SPablo Neira Ayuso enum nft_trans_phase phase); 5075eccdfaaSJoe Perches int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, 50820a69341SPatrick McHardy struct nft_set_binding *binding); 509cd5125d8SFlorian Westphal void nf_tables_destroy_set(const struct nft_ctx *ctx, struct nft_set *set); 51020a69341SPatrick McHardy 5113ac4c07aSPatrick McHardy /** 5123ac4c07aSPatrick McHardy * enum nft_set_extensions - set extension type IDs 5133ac4c07aSPatrick McHardy * 5143ac4c07aSPatrick McHardy * @NFT_SET_EXT_KEY: element key 5157b225d0bSPablo Neira Ayuso * @NFT_SET_EXT_KEY_END: upper bound element key, for ranges 5163ac4c07aSPatrick McHardy * @NFT_SET_EXT_DATA: mapping data 5173ac4c07aSPatrick McHardy * @NFT_SET_EXT_FLAGS: element flags 518c3e1b005SPatrick McHardy * @NFT_SET_EXT_TIMEOUT: element timeout 519c3e1b005SPatrick McHardy * @NFT_SET_EXT_EXPIRATION: element expiration time 52068e942e8SPatrick McHardy * @NFT_SET_EXT_USERDATA: user data associated with the element 521f25ad2e9SPatrick McHardy * @NFT_SET_EXT_EXPR: expression assiociated with the element 5228aeff920SPablo Neira Ayuso * @NFT_SET_EXT_OBJREF: stateful object reference associated with element 5233ac4c07aSPatrick McHardy * @NFT_SET_EXT_NUM: number of extension types 5243ac4c07aSPatrick McHardy */ 5253ac4c07aSPatrick McHardy enum nft_set_extensions { 5263ac4c07aSPatrick McHardy NFT_SET_EXT_KEY, 5277b225d0bSPablo Neira Ayuso NFT_SET_EXT_KEY_END, 5283ac4c07aSPatrick McHardy NFT_SET_EXT_DATA, 5293ac4c07aSPatrick McHardy NFT_SET_EXT_FLAGS, 530c3e1b005SPatrick McHardy NFT_SET_EXT_TIMEOUT, 531c3e1b005SPatrick McHardy NFT_SET_EXT_EXPIRATION, 53268e942e8SPatrick McHardy NFT_SET_EXT_USERDATA, 533f25ad2e9SPatrick McHardy NFT_SET_EXT_EXPR, 5348aeff920SPablo Neira Ayuso NFT_SET_EXT_OBJREF, 5353ac4c07aSPatrick McHardy NFT_SET_EXT_NUM 5363ac4c07aSPatrick McHardy }; 5373ac4c07aSPatrick McHardy 5383ac4c07aSPatrick McHardy /** 5393ac4c07aSPatrick McHardy * struct nft_set_ext_type - set extension type 5403ac4c07aSPatrick McHardy * 5413ac4c07aSPatrick McHardy * @len: fixed part length of the extension 5423ac4c07aSPatrick McHardy * @align: alignment requirements of the extension 5433ac4c07aSPatrick McHardy */ 5443ac4c07aSPatrick McHardy struct nft_set_ext_type { 5453ac4c07aSPatrick McHardy u8 len; 5463ac4c07aSPatrick McHardy u8 align; 5473ac4c07aSPatrick McHardy }; 5483ac4c07aSPatrick McHardy 5493ac4c07aSPatrick McHardy extern const struct nft_set_ext_type nft_set_ext_types[]; 5503ac4c07aSPatrick McHardy 5513ac4c07aSPatrick McHardy /** 5523ac4c07aSPatrick McHardy * struct nft_set_ext_tmpl - set extension template 5533ac4c07aSPatrick McHardy * 5543ac4c07aSPatrick McHardy * @len: length of extension area 5553ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 5563ac4c07aSPatrick McHardy */ 5573ac4c07aSPatrick McHardy struct nft_set_ext_tmpl { 5583ac4c07aSPatrick McHardy u16 len; 5593ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 5603ac4c07aSPatrick McHardy }; 5613ac4c07aSPatrick McHardy 5623ac4c07aSPatrick McHardy /** 5633ac4c07aSPatrick McHardy * struct nft_set_ext - set extensions 5643ac4c07aSPatrick McHardy * 565cc02e457SPatrick McHardy * @genmask: generation mask 5663ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 5673ac4c07aSPatrick McHardy * @data: beginning of extension data 5683ac4c07aSPatrick McHardy */ 5693ac4c07aSPatrick McHardy struct nft_set_ext { 570cc02e457SPatrick McHardy u8 genmask; 5713ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 5726daf1414SGustavo A. R. Silva char data[]; 5733ac4c07aSPatrick McHardy }; 5743ac4c07aSPatrick McHardy 5753ac4c07aSPatrick McHardy static inline void nft_set_ext_prepare(struct nft_set_ext_tmpl *tmpl) 5763ac4c07aSPatrick McHardy { 5773ac4c07aSPatrick McHardy memset(tmpl, 0, sizeof(*tmpl)); 5783ac4c07aSPatrick McHardy tmpl->len = sizeof(struct nft_set_ext); 5793ac4c07aSPatrick McHardy } 5803ac4c07aSPatrick McHardy 5813ac4c07aSPatrick McHardy static inline void nft_set_ext_add_length(struct nft_set_ext_tmpl *tmpl, u8 id, 5823ac4c07aSPatrick McHardy unsigned int len) 5833ac4c07aSPatrick McHardy { 5843ac4c07aSPatrick McHardy tmpl->len = ALIGN(tmpl->len, nft_set_ext_types[id].align); 5853ac4c07aSPatrick McHardy BUG_ON(tmpl->len > U8_MAX); 5863ac4c07aSPatrick McHardy tmpl->offset[id] = tmpl->len; 5873ac4c07aSPatrick McHardy tmpl->len += nft_set_ext_types[id].len + len; 5883ac4c07aSPatrick McHardy } 5893ac4c07aSPatrick McHardy 5903ac4c07aSPatrick McHardy static inline void nft_set_ext_add(struct nft_set_ext_tmpl *tmpl, u8 id) 5913ac4c07aSPatrick McHardy { 5923ac4c07aSPatrick McHardy nft_set_ext_add_length(tmpl, id, 0); 5933ac4c07aSPatrick McHardy } 5943ac4c07aSPatrick McHardy 5953ac4c07aSPatrick McHardy static inline void nft_set_ext_init(struct nft_set_ext *ext, 5963ac4c07aSPatrick McHardy const struct nft_set_ext_tmpl *tmpl) 5973ac4c07aSPatrick McHardy { 5983ac4c07aSPatrick McHardy memcpy(ext->offset, tmpl->offset, sizeof(ext->offset)); 5993ac4c07aSPatrick McHardy } 6003ac4c07aSPatrick McHardy 6013ac4c07aSPatrick McHardy static inline bool __nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) 6023ac4c07aSPatrick McHardy { 6033ac4c07aSPatrick McHardy return !!ext->offset[id]; 6043ac4c07aSPatrick McHardy } 6053ac4c07aSPatrick McHardy 6063ac4c07aSPatrick McHardy static inline bool nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) 6073ac4c07aSPatrick McHardy { 6083ac4c07aSPatrick McHardy return ext && __nft_set_ext_exists(ext, id); 6093ac4c07aSPatrick McHardy } 6103ac4c07aSPatrick McHardy 6113ac4c07aSPatrick McHardy static inline void *nft_set_ext(const struct nft_set_ext *ext, u8 id) 6123ac4c07aSPatrick McHardy { 6133ac4c07aSPatrick McHardy return (void *)ext + ext->offset[id]; 6143ac4c07aSPatrick McHardy } 6153ac4c07aSPatrick McHardy 6163ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_key(const struct nft_set_ext *ext) 6173ac4c07aSPatrick McHardy { 6183ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_KEY); 6193ac4c07aSPatrick McHardy } 6203ac4c07aSPatrick McHardy 6217b225d0bSPablo Neira Ayuso static inline struct nft_data *nft_set_ext_key_end(const struct nft_set_ext *ext) 6227b225d0bSPablo Neira Ayuso { 6237b225d0bSPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_KEY_END); 6247b225d0bSPablo Neira Ayuso } 6257b225d0bSPablo Neira Ayuso 6263ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_data(const struct nft_set_ext *ext) 6273ac4c07aSPatrick McHardy { 6283ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_DATA); 6293ac4c07aSPatrick McHardy } 6303ac4c07aSPatrick McHardy 6313ac4c07aSPatrick McHardy static inline u8 *nft_set_ext_flags(const struct nft_set_ext *ext) 6323ac4c07aSPatrick McHardy { 6333ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_FLAGS); 6343ac4c07aSPatrick McHardy } 635ef1f7df9SPatrick McHardy 636c3e1b005SPatrick McHardy static inline u64 *nft_set_ext_timeout(const struct nft_set_ext *ext) 637c3e1b005SPatrick McHardy { 638c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_TIMEOUT); 639c3e1b005SPatrick McHardy } 640c3e1b005SPatrick McHardy 6418e1102d5SFlorian Westphal static inline u64 *nft_set_ext_expiration(const struct nft_set_ext *ext) 642c3e1b005SPatrick McHardy { 643c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_EXPIRATION); 644c3e1b005SPatrick McHardy } 645c3e1b005SPatrick McHardy 64668e942e8SPatrick McHardy static inline struct nft_userdata *nft_set_ext_userdata(const struct nft_set_ext *ext) 64768e942e8SPatrick McHardy { 64868e942e8SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_USERDATA); 64968e942e8SPatrick McHardy } 65068e942e8SPatrick McHardy 651f25ad2e9SPatrick McHardy static inline struct nft_expr *nft_set_ext_expr(const struct nft_set_ext *ext) 652f25ad2e9SPatrick McHardy { 653f25ad2e9SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_EXPR); 654f25ad2e9SPatrick McHardy } 655f25ad2e9SPatrick McHardy 656c3e1b005SPatrick McHardy static inline bool nft_set_elem_expired(const struct nft_set_ext *ext) 657c3e1b005SPatrick McHardy { 658c3e1b005SPatrick McHardy return nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION) && 6598e1102d5SFlorian Westphal time_is_before_eq_jiffies64(*nft_set_ext_expiration(ext)); 660c3e1b005SPatrick McHardy } 661c3e1b005SPatrick McHardy 662fe2811ebSPatrick McHardy static inline struct nft_set_ext *nft_set_elem_ext(const struct nft_set *set, 663fe2811ebSPatrick McHardy void *elem) 664fe2811ebSPatrick McHardy { 665fe2811ebSPatrick McHardy return elem + set->ops->elemsize; 666fe2811ebSPatrick McHardy } 667fe2811ebSPatrick McHardy 6688aeff920SPablo Neira Ayuso static inline struct nft_object **nft_set_ext_obj(const struct nft_set_ext *ext) 6698aeff920SPablo Neira Ayuso { 6708aeff920SPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_OBJREF); 6718aeff920SPablo Neira Ayuso } 6728aeff920SPablo Neira Ayuso 673a7fc9368SPablo Neira Ayuso struct nft_expr *nft_set_elem_expr_alloc(const struct nft_ctx *ctx, 674a7fc9368SPablo Neira Ayuso const struct nft_set *set, 675a7fc9368SPablo Neira Ayuso const struct nlattr *attr); 676a7fc9368SPablo Neira Ayuso 67722fe54d5SPatrick McHardy void *nft_set_elem_init(const struct nft_set *set, 67822fe54d5SPatrick McHardy const struct nft_set_ext_tmpl *tmpl, 6797b225d0bSPablo Neira Ayuso const u32 *key, const u32 *key_end, const u32 *data, 68079ebb5bbSLaura Garcia Liebana u64 timeout, u64 expiration, gfp_t gfp); 68161f9e292SLiping Zhang void nft_set_elem_destroy(const struct nft_set *set, void *elem, 68261f9e292SLiping Zhang bool destroy_expr); 68361edafbbSPatrick McHardy 68420a69341SPatrick McHardy /** 685cfed7e1bSPatrick McHardy * struct nft_set_gc_batch_head - nf_tables set garbage collection batch 686cfed7e1bSPatrick McHardy * 687cfed7e1bSPatrick McHardy * @rcu: rcu head 688cfed7e1bSPatrick McHardy * @set: set the elements belong to 689cfed7e1bSPatrick McHardy * @cnt: count of elements 690cfed7e1bSPatrick McHardy */ 691cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head { 692cfed7e1bSPatrick McHardy struct rcu_head rcu; 693cfed7e1bSPatrick McHardy const struct nft_set *set; 694cfed7e1bSPatrick McHardy unsigned int cnt; 695cfed7e1bSPatrick McHardy }; 696cfed7e1bSPatrick McHardy 697cfed7e1bSPatrick McHardy #define NFT_SET_GC_BATCH_SIZE ((PAGE_SIZE - \ 698cfed7e1bSPatrick McHardy sizeof(struct nft_set_gc_batch_head)) / \ 699cfed7e1bSPatrick McHardy sizeof(void *)) 700cfed7e1bSPatrick McHardy 701cfed7e1bSPatrick McHardy /** 702cfed7e1bSPatrick McHardy * struct nft_set_gc_batch - nf_tables set garbage collection batch 703cfed7e1bSPatrick McHardy * 704cfed7e1bSPatrick McHardy * @head: GC batch head 705cfed7e1bSPatrick McHardy * @elems: garbage collection elements 706cfed7e1bSPatrick McHardy */ 707cfed7e1bSPatrick McHardy struct nft_set_gc_batch { 708cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head head; 709cfed7e1bSPatrick McHardy void *elems[NFT_SET_GC_BATCH_SIZE]; 710cfed7e1bSPatrick McHardy }; 711cfed7e1bSPatrick McHardy 712cfed7e1bSPatrick McHardy struct nft_set_gc_batch *nft_set_gc_batch_alloc(const struct nft_set *set, 713cfed7e1bSPatrick McHardy gfp_t gfp); 714cfed7e1bSPatrick McHardy void nft_set_gc_batch_release(struct rcu_head *rcu); 715cfed7e1bSPatrick McHardy 716cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_complete(struct nft_set_gc_batch *gcb) 717cfed7e1bSPatrick McHardy { 718cfed7e1bSPatrick McHardy if (gcb != NULL) 719cfed7e1bSPatrick McHardy call_rcu(&gcb->head.rcu, nft_set_gc_batch_release); 720cfed7e1bSPatrick McHardy } 721cfed7e1bSPatrick McHardy 722cfed7e1bSPatrick McHardy static inline struct nft_set_gc_batch * 723cfed7e1bSPatrick McHardy nft_set_gc_batch_check(const struct nft_set *set, struct nft_set_gc_batch *gcb, 724cfed7e1bSPatrick McHardy gfp_t gfp) 725cfed7e1bSPatrick McHardy { 726cfed7e1bSPatrick McHardy if (gcb != NULL) { 727cfed7e1bSPatrick McHardy if (gcb->head.cnt + 1 < ARRAY_SIZE(gcb->elems)) 728cfed7e1bSPatrick McHardy return gcb; 729cfed7e1bSPatrick McHardy nft_set_gc_batch_complete(gcb); 730cfed7e1bSPatrick McHardy } 731cfed7e1bSPatrick McHardy return nft_set_gc_batch_alloc(set, gfp); 732cfed7e1bSPatrick McHardy } 733cfed7e1bSPatrick McHardy 734cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_add(struct nft_set_gc_batch *gcb, 735cfed7e1bSPatrick McHardy void *elem) 736cfed7e1bSPatrick McHardy { 737cfed7e1bSPatrick McHardy gcb->elems[gcb->head.cnt++] = elem; 738cfed7e1bSPatrick McHardy } 739cfed7e1bSPatrick McHardy 740b8e20400SPablo Neira Ayuso struct nft_expr_ops; 741cfed7e1bSPatrick McHardy /** 742ef1f7df9SPatrick McHardy * struct nft_expr_type - nf_tables expression type 74396518518SPatrick McHardy * 744ef1f7df9SPatrick McHardy * @select_ops: function to select nft_expr_ops 745b8e20400SPablo Neira Ayuso * @release_ops: release nft_expr_ops 746ef1f7df9SPatrick McHardy * @ops: default ops, used when no select_ops functions is present 74796518518SPatrick McHardy * @list: used internally 74896518518SPatrick McHardy * @name: Identifier 74996518518SPatrick McHardy * @owner: module reference 75096518518SPatrick McHardy * @policy: netlink attribute policy 75196518518SPatrick McHardy * @maxattr: highest netlink attribute number 75264d46806SPatrick McHardy * @family: address family for AF-specific types 753151d799aSPatrick McHardy * @flags: expression type flags 754ef1f7df9SPatrick McHardy */ 755ef1f7df9SPatrick McHardy struct nft_expr_type { 7560ca743a5SPablo Neira Ayuso const struct nft_expr_ops *(*select_ops)(const struct nft_ctx *, 7570ca743a5SPablo Neira Ayuso const struct nlattr * const tb[]); 758b8e20400SPablo Neira Ayuso void (*release_ops)(const struct nft_expr_ops *ops); 759ef1f7df9SPatrick McHardy const struct nft_expr_ops *ops; 760ef1f7df9SPatrick McHardy struct list_head list; 761ef1f7df9SPatrick McHardy const char *name; 762ef1f7df9SPatrick McHardy struct module *owner; 763ef1f7df9SPatrick McHardy const struct nla_policy *policy; 764ef1f7df9SPatrick McHardy unsigned int maxattr; 76564d46806SPatrick McHardy u8 family; 766151d799aSPatrick McHardy u8 flags; 767ef1f7df9SPatrick McHardy }; 768ef1f7df9SPatrick McHardy 769151d799aSPatrick McHardy #define NFT_EXPR_STATEFUL 0x1 77079b174adSPablo Neira Ayuso #define NFT_EXPR_GC 0x2 771151d799aSPatrick McHardy 772f6ac8585SPablo Neira Ayuso enum nft_trans_phase { 773f6ac8585SPablo Neira Ayuso NFT_TRANS_PREPARE, 774f6ac8585SPablo Neira Ayuso NFT_TRANS_ABORT, 775f6ac8585SPablo Neira Ayuso NFT_TRANS_COMMIT, 776f6ac8585SPablo Neira Ayuso NFT_TRANS_RELEASE 777f6ac8585SPablo Neira Ayuso }; 778f6ac8585SPablo Neira Ayuso 779c9626a2cSPablo Neira Ayuso struct nft_flow_rule; 780c9626a2cSPablo Neira Ayuso struct nft_offload_ctx; 781c9626a2cSPablo Neira Ayuso 782ef1f7df9SPatrick McHardy /** 783ef1f7df9SPatrick McHardy * struct nft_expr_ops - nf_tables expression operations 784ef1f7df9SPatrick McHardy * 785ef1f7df9SPatrick McHardy * @eval: Expression evaluation function 78696518518SPatrick McHardy * @size: full expression size, including private data size 787ef1f7df9SPatrick McHardy * @init: initialization function 788cd5125d8SFlorian Westphal * @activate: activate expression in the next generation 789cd5125d8SFlorian Westphal * @deactivate: deactivate expression in next generation 790cd5125d8SFlorian Westphal * @destroy: destruction function, called after synchronize_rcu 791ef1f7df9SPatrick McHardy * @dump: function to dump parameters 792ef1f7df9SPatrick McHardy * @type: expression type 7930ca743a5SPablo Neira Ayuso * @validate: validate expression, called during loop detection 7940ca743a5SPablo Neira Ayuso * @data: extra data to attach to this expression operation 79596518518SPatrick McHardy */ 79696518518SPatrick McHardy struct nft_expr; 79796518518SPatrick McHardy struct nft_expr_ops { 79896518518SPatrick McHardy void (*eval)(const struct nft_expr *expr, 799a55e22e9SPatrick McHardy struct nft_regs *regs, 80096518518SPatrick McHardy const struct nft_pktinfo *pkt); 801086f3321SPablo Neira Ayuso int (*clone)(struct nft_expr *dst, 802086f3321SPablo Neira Ayuso const struct nft_expr *src); 803ef1f7df9SPatrick McHardy unsigned int size; 804ef1f7df9SPatrick McHardy 80596518518SPatrick McHardy int (*init)(const struct nft_ctx *ctx, 80696518518SPatrick McHardy const struct nft_expr *expr, 80796518518SPatrick McHardy const struct nlattr * const tb[]); 808bb7b40aeSPablo Neira Ayuso void (*activate)(const struct nft_ctx *ctx, 809bb7b40aeSPablo Neira Ayuso const struct nft_expr *expr); 810bb7b40aeSPablo Neira Ayuso void (*deactivate)(const struct nft_ctx *ctx, 811f6ac8585SPablo Neira Ayuso const struct nft_expr *expr, 812f6ac8585SPablo Neira Ayuso enum nft_trans_phase phase); 81362472bceSPatrick McHardy void (*destroy)(const struct nft_ctx *ctx, 81462472bceSPatrick McHardy const struct nft_expr *expr); 815371ebcbbSPablo Neira Ayuso void (*destroy_clone)(const struct nft_ctx *ctx, 816371ebcbbSPablo Neira Ayuso const struct nft_expr *expr); 81796518518SPatrick McHardy int (*dump)(struct sk_buff *skb, 81896518518SPatrick McHardy const struct nft_expr *expr); 8190ca743a5SPablo Neira Ayuso int (*validate)(const struct nft_ctx *ctx, 8200ca743a5SPablo Neira Ayuso const struct nft_expr *expr, 8210ca743a5SPablo Neira Ayuso const struct nft_data **data); 82279b174adSPablo Neira Ayuso bool (*gc)(struct net *net, 82379b174adSPablo Neira Ayuso const struct nft_expr *expr); 824c9626a2cSPablo Neira Ayuso int (*offload)(struct nft_offload_ctx *ctx, 825c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow, 826c9626a2cSPablo Neira Ayuso const struct nft_expr *expr); 827c9626a2cSPablo Neira Ayuso u32 offload_flags; 828ef1f7df9SPatrick McHardy const struct nft_expr_type *type; 8290ca743a5SPablo Neira Ayuso void *data; 83096518518SPatrick McHardy }; 83196518518SPatrick McHardy 832ef1f7df9SPatrick McHardy #define NFT_EXPR_MAXATTR 16 83396518518SPatrick McHardy #define NFT_EXPR_SIZE(size) (sizeof(struct nft_expr) + \ 83496518518SPatrick McHardy ALIGN(size, __alignof__(struct nft_expr))) 83596518518SPatrick McHardy 83696518518SPatrick McHardy /** 83796518518SPatrick McHardy * struct nft_expr - nf_tables expression 83896518518SPatrick McHardy * 83996518518SPatrick McHardy * @ops: expression ops 84096518518SPatrick McHardy * @data: expression private data 84196518518SPatrick McHardy */ 84296518518SPatrick McHardy struct nft_expr { 84396518518SPatrick McHardy const struct nft_expr_ops *ops; 844250367c5SLukas Wunner unsigned char data[] 845250367c5SLukas Wunner __attribute__((aligned(__alignof__(u64)))); 84696518518SPatrick McHardy }; 84796518518SPatrick McHardy 84896518518SPatrick McHardy static inline void *nft_expr_priv(const struct nft_expr *expr) 84996518518SPatrick McHardy { 85096518518SPatrick McHardy return (void *)expr->data; 85196518518SPatrick McHardy } 85296518518SPatrick McHardy 853c604cc69SPablo Neira Ayuso int nft_expr_clone(struct nft_expr *dst, struct nft_expr *src); 8540b2d8a7bSPatrick McHardy void nft_expr_destroy(const struct nft_ctx *ctx, struct nft_expr *expr); 8550b2d8a7bSPatrick McHardy int nft_expr_dump(struct sk_buff *skb, unsigned int attr, 8560b2d8a7bSPatrick McHardy const struct nft_expr *expr); 8570b2d8a7bSPatrick McHardy 85896518518SPatrick McHardy /** 85996518518SPatrick McHardy * struct nft_rule - nf_tables rule 86096518518SPatrick McHardy * 86196518518SPatrick McHardy * @list: used internally 86296518518SPatrick McHardy * @handle: rule handle 8630628b123SPablo Neira Ayuso * @genmask: generation mask 86496518518SPatrick McHardy * @dlen: length of expression data 86586f1ec32SPatrick McHardy * @udata: user data is appended to the rule 86696518518SPatrick McHardy * @data: expression data 86796518518SPatrick McHardy */ 86896518518SPatrick McHardy struct nft_rule { 86996518518SPatrick McHardy struct list_head list; 8700768b3b3SPablo Neira Ayuso u64 handle:42, 8710628b123SPablo Neira Ayuso genmask:2, 8720768b3b3SPablo Neira Ayuso dlen:12, 87386f1ec32SPatrick McHardy udata:1; 87496518518SPatrick McHardy unsigned char data[] 87596518518SPatrick McHardy __attribute__((aligned(__alignof__(struct nft_expr)))); 87696518518SPatrick McHardy }; 87796518518SPatrick McHardy 87896518518SPatrick McHardy static inline struct nft_expr *nft_expr_first(const struct nft_rule *rule) 87996518518SPatrick McHardy { 88096518518SPatrick McHardy return (struct nft_expr *)&rule->data[0]; 88196518518SPatrick McHardy } 88296518518SPatrick McHardy 88396518518SPatrick McHardy static inline struct nft_expr *nft_expr_next(const struct nft_expr *expr) 88496518518SPatrick McHardy { 88596518518SPatrick McHardy return ((void *)expr) + expr->ops->size; 88696518518SPatrick McHardy } 88796518518SPatrick McHardy 88896518518SPatrick McHardy static inline struct nft_expr *nft_expr_last(const struct nft_rule *rule) 88996518518SPatrick McHardy { 89096518518SPatrick McHardy return (struct nft_expr *)&rule->data[rule->dlen]; 89196518518SPatrick McHardy } 89296518518SPatrick McHardy 89386f1ec32SPatrick McHardy static inline struct nft_userdata *nft_userdata(const struct nft_rule *rule) 8940768b3b3SPablo Neira Ayuso { 8950768b3b3SPablo Neira Ayuso return (void *)&rule->data[rule->dlen]; 8960768b3b3SPablo Neira Ayuso } 8970768b3b3SPablo Neira Ayuso 89876adfafeSPablo Neira Ayuso static inline void nft_set_elem_update_expr(const struct nft_set_ext *ext, 89976adfafeSPablo Neira Ayuso struct nft_regs *regs, 90076adfafeSPablo Neira Ayuso const struct nft_pktinfo *pkt) 90176adfafeSPablo Neira Ayuso { 90276adfafeSPablo Neira Ayuso struct nft_expr *expr; 90376adfafeSPablo Neira Ayuso 90476adfafeSPablo Neira Ayuso if (nft_set_ext_exists(ext, NFT_SET_EXT_EXPR)) { 90576adfafeSPablo Neira Ayuso expr = nft_set_ext_expr(ext); 90676adfafeSPablo Neira Ayuso expr->ops->eval(expr, regs, pkt); 90776adfafeSPablo Neira Ayuso } 90876adfafeSPablo Neira Ayuso } 90976adfafeSPablo Neira Ayuso 91096518518SPatrick McHardy /* 91196518518SPatrick McHardy * The last pointer isn't really necessary, but the compiler isn't able to 91296518518SPatrick McHardy * determine that the result of nft_expr_last() is always the same since it 91396518518SPatrick McHardy * can't assume that the dlen value wasn't changed within calls in the loop. 91496518518SPatrick McHardy */ 91596518518SPatrick McHardy #define nft_rule_for_each_expr(expr, last, rule) \ 91696518518SPatrick McHardy for ((expr) = nft_expr_first(rule), (last) = nft_expr_last(rule); \ 91796518518SPatrick McHardy (expr) != (last); \ 91896518518SPatrick McHardy (expr) = nft_expr_next(expr)) 91996518518SPatrick McHardy 92096518518SPatrick McHardy enum nft_chain_flags { 92196518518SPatrick McHardy NFT_BASE_CHAIN = 0x1, 922c9626a2cSPablo Neira Ayuso NFT_CHAIN_HW_OFFLOAD = 0x2, 92396518518SPatrick McHardy }; 92496518518SPatrick McHardy 925ad652f38SPablo Neira Ayuso #define NFT_CHAIN_POLICY_UNSET U8_MAX 926ad652f38SPablo Neira Ayuso 92796518518SPatrick McHardy /** 92896518518SPatrick McHardy * struct nft_chain - nf_tables chain 92996518518SPatrick McHardy * 93096518518SPatrick McHardy * @rules: list of rules in the chain 93196518518SPatrick McHardy * @list: used internally 9321b2470e5SFlorian Westphal * @rhlhead: used internally 933b5bc89bfSPablo Neira Ayuso * @table: table that this chain belongs to 93496518518SPatrick McHardy * @handle: chain handle 93596518518SPatrick McHardy * @use: number of jump references to this chain 936a0a7379eSPablo Neira Ayuso * @flags: bitmask of enum nft_chain_flags 93796518518SPatrick McHardy * @name: name of the chain 93896518518SPatrick McHardy */ 93996518518SPatrick McHardy struct nft_chain { 9400cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_0; 9410cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_1; 94296518518SPatrick McHardy struct list_head rules; 94396518518SPatrick McHardy struct list_head list; 9441b2470e5SFlorian Westphal struct rhlist_head rhlhead; 945b5bc89bfSPablo Neira Ayuso struct nft_table *table; 94696518518SPatrick McHardy u64 handle; 947a0a7379eSPablo Neira Ayuso u32 use; 948664b0f8cSPablo Neira Ayuso u8 flags:6, 949664b0f8cSPablo Neira Ayuso genmask:2; 950b7263e07SPhil Sutter char *name; 9510cbc06b3SFlorian Westphal 9520cbc06b3SFlorian Westphal /* Only used during control plane commit phase: */ 9530cbc06b3SFlorian Westphal struct nft_rule **rules_next; 95496518518SPatrick McHardy }; 95596518518SPatrick McHardy 956a654de8fSPablo Neira Ayuso int nft_chain_validate(const struct nft_ctx *ctx, const struct nft_chain *chain); 957a654de8fSPablo Neira Ayuso 95832537e91SPablo Neira Ayuso enum nft_chain_types { 9599370761cSPablo Neira Ayuso NFT_CHAIN_T_DEFAULT = 0, 9609370761cSPablo Neira Ayuso NFT_CHAIN_T_ROUTE, 9619370761cSPablo Neira Ayuso NFT_CHAIN_T_NAT, 9629370761cSPablo Neira Ayuso NFT_CHAIN_T_MAX 9639370761cSPablo Neira Ayuso }; 9649370761cSPablo Neira Ayuso 9651a1e1a12SPatrick McHardy /** 96632537e91SPablo Neira Ayuso * struct nft_chain_type - nf_tables chain type info 9671a1e1a12SPatrick McHardy * 9681a1e1a12SPatrick McHardy * @name: name of the type 9691a1e1a12SPatrick McHardy * @type: numeric identifier 9701a1e1a12SPatrick McHardy * @family: address family 9711a1e1a12SPatrick McHardy * @owner: module owner 9721a1e1a12SPatrick McHardy * @hook_mask: mask of valid hooks 973c2f9eafeSPablo Neira Ayuso * @hooks: array of hook functions 9744e25ceb8SFlorian Westphal * @ops_register: base chain register function 9754e25ceb8SFlorian Westphal * @ops_unregister: base chain unregister function 9761a1e1a12SPatrick McHardy */ 97732537e91SPablo Neira Ayuso struct nft_chain_type { 9781a1e1a12SPatrick McHardy const char *name; 97932537e91SPablo Neira Ayuso enum nft_chain_types type; 9801a1e1a12SPatrick McHardy int family; 9811a1e1a12SPatrick McHardy struct module *owner; 9821a1e1a12SPatrick McHardy unsigned int hook_mask; 9831a1e1a12SPatrick McHardy nf_hookfn *hooks[NF_MAX_HOOKS]; 9844e25ceb8SFlorian Westphal int (*ops_register)(struct net *net, const struct nf_hook_ops *ops); 9854e25ceb8SFlorian Westphal void (*ops_unregister)(struct net *net, const struct nf_hook_ops *ops); 9861a1e1a12SPatrick McHardy }; 9871a1e1a12SPatrick McHardy 9887210e4e3SPablo Neira Ayuso int nft_chain_validate_dependency(const struct nft_chain *chain, 98932537e91SPablo Neira Ayuso enum nft_chain_types type); 99075e8d06dSPablo Neira Ayuso int nft_chain_validate_hooks(const struct nft_chain *chain, 99175e8d06dSPablo Neira Ayuso unsigned int hook_flags); 9927210e4e3SPablo Neira Ayuso 9930ca743a5SPablo Neira Ayuso struct nft_stats { 9940ca743a5SPablo Neira Ayuso u64 bytes; 9950ca743a5SPablo Neira Ayuso u64 pkts; 996ce355e20SEric Dumazet struct u64_stats_sync syncp; 9970ca743a5SPablo Neira Ayuso }; 9980ca743a5SPablo Neira Ayuso 9993f0465a9SPablo Neira Ayuso struct nft_hook { 10003f0465a9SPablo Neira Ayuso struct list_head list; 10013f0465a9SPablo Neira Ayuso struct nf_hook_ops ops; 10023f0465a9SPablo Neira Ayuso struct rcu_head rcu; 10033f0465a9SPablo Neira Ayuso }; 10043f0465a9SPablo Neira Ayuso 100596518518SPatrick McHardy /** 100696518518SPatrick McHardy * struct nft_base_chain - nf_tables base chain 100796518518SPatrick McHardy * 100896518518SPatrick McHardy * @ops: netfilter hook ops 1009d54725cdSPablo Neira Ayuso * @hook_list: list of netfilter hooks (for NFPROTO_NETDEV family) 10109370761cSPablo Neira Ayuso * @type: chain type 10110ca743a5SPablo Neira Ayuso * @policy: default policy 10120ca743a5SPablo Neira Ayuso * @stats: per-cpu chain stats 101396518518SPatrick McHardy * @chain: the chain 101414bfb13fSPablo Neira Ayuso * @flow_block: flow block (for hardware offload) 101596518518SPatrick McHardy */ 101696518518SPatrick McHardy struct nft_base_chain { 1017c974a3a3SPablo Neira Ayuso struct nf_hook_ops ops; 1018d54725cdSPablo Neira Ayuso struct list_head hook_list; 101932537e91SPablo Neira Ayuso const struct nft_chain_type *type; 10200ca743a5SPablo Neira Ayuso u8 policy; 1021835b8033SPablo Neira Ayuso u8 flags; 10220ca743a5SPablo Neira Ayuso struct nft_stats __percpu *stats; 102396518518SPatrick McHardy struct nft_chain chain; 102414bfb13fSPablo Neira Ayuso struct flow_block flow_block; 102596518518SPatrick McHardy }; 102696518518SPatrick McHardy 102796518518SPatrick McHardy static inline struct nft_base_chain *nft_base_chain(const struct nft_chain *chain) 102896518518SPatrick McHardy { 102996518518SPatrick McHardy return container_of(chain, struct nft_base_chain, chain); 103096518518SPatrick McHardy } 103196518518SPatrick McHardy 1032f323d954SPablo Neira Ayuso static inline bool nft_is_base_chain(const struct nft_chain *chain) 1033f323d954SPablo Neira Ayuso { 1034f323d954SPablo Neira Ayuso return chain->flags & NFT_BASE_CHAIN; 1035f323d954SPablo Neira Ayuso } 1036f323d954SPablo Neira Ayuso 10375ebe0b0eSPablo Neira Ayuso int __nft_release_basechain(struct nft_ctx *ctx); 1038835b8033SPablo Neira Ayuso 103906198b34SEric W. Biederman unsigned int nft_do_chain(struct nft_pktinfo *pkt, void *priv); 104096518518SPatrick McHardy 104196518518SPatrick McHardy /** 104296518518SPatrick McHardy * struct nft_table - nf_tables table 104396518518SPatrick McHardy * 104496518518SPatrick McHardy * @list: used internally 10451b2470e5SFlorian Westphal * @chains_ht: chains in the table 10461b2470e5SFlorian Westphal * @chains: same, for stable walks 104796518518SPatrick McHardy * @sets: sets in the table 1048e5009240SPablo Neira Ayuso * @objects: stateful objects in the table 10493b49e2e9SPablo Neira Ayuso * @flowtables: flow tables in the table 105096518518SPatrick McHardy * @hgenerator: handle generator state 10513ecbfd65SHarsha Sharma * @handle: table handle 105296518518SPatrick McHardy * @use: number of chain references to this table 105396518518SPatrick McHardy * @flags: table flag (see enum nft_table_flags) 1054f2a6d766SPablo Neira Ayuso * @genmask: generation mask 105536596dadSPablo Neira Ayuso * @afinfo: address family info 105696518518SPatrick McHardy * @name: name of the table 105796518518SPatrick McHardy */ 105896518518SPatrick McHardy struct nft_table { 105996518518SPatrick McHardy struct list_head list; 10601b2470e5SFlorian Westphal struct rhltable chains_ht; 106196518518SPatrick McHardy struct list_head chains; 106296518518SPatrick McHardy struct list_head sets; 1063e5009240SPablo Neira Ayuso struct list_head objects; 10643b49e2e9SPablo Neira Ayuso struct list_head flowtables; 106596518518SPatrick McHardy u64 hgenerator; 10663ecbfd65SHarsha Sharma u64 handle; 106796518518SPatrick McHardy u32 use; 106898319cb9SPablo Neira Ayuso u16 family:6, 106998319cb9SPablo Neira Ayuso flags:8, 1070f2a6d766SPablo Neira Ayuso genmask:2; 1071e46abbccSPhil Sutter char *name; 1072ebddf1a8SPablo Neira Ayuso }; 1073ebddf1a8SPablo Neira Ayuso 1074cc07eeb0SPablo Neira Ayuso void nft_register_chain_type(const struct nft_chain_type *); 107532537e91SPablo Neira Ayuso void nft_unregister_chain_type(const struct nft_chain_type *); 107696518518SPatrick McHardy 10775eccdfaaSJoe Perches int nft_register_expr(struct nft_expr_type *); 10785eccdfaaSJoe Perches void nft_unregister_expr(struct nft_expr_type *); 107996518518SPatrick McHardy 108033d5a7b1SFlorian Westphal int nft_verdict_dump(struct sk_buff *skb, int type, 108133d5a7b1SFlorian Westphal const struct nft_verdict *v); 108233d5a7b1SFlorian Westphal 108333d5a7b1SFlorian Westphal /** 1084d152159bSFlorian Westphal * struct nft_object_hash_key - key to lookup nft_object 1085d152159bSFlorian Westphal * 1086d152159bSFlorian Westphal * @name: name of the stateful object to look up 1087d152159bSFlorian Westphal * @table: table the object belongs to 1088d152159bSFlorian Westphal */ 1089d152159bSFlorian Westphal struct nft_object_hash_key { 1090d152159bSFlorian Westphal const char *name; 1091d152159bSFlorian Westphal const struct nft_table *table; 1092d152159bSFlorian Westphal }; 1093d152159bSFlorian Westphal 1094d152159bSFlorian Westphal /** 1095e5009240SPablo Neira Ayuso * struct nft_object - nf_tables stateful object 1096e5009240SPablo Neira Ayuso * 1097e5009240SPablo Neira Ayuso * @list: table stateful object list node 1098d152159bSFlorian Westphal * @key: keys that identify this object 10994d44175aSFlorian Westphal * @rhlhead: nft_objname_ht node 1100e5009240SPablo Neira Ayuso * @genmask: generation mask 1101e5009240SPablo Neira Ayuso * @use: number of references to this stateful object 11023ecbfd65SHarsha Sharma * @handle: unique object handle 1103dfc46034SPablo M. Bermudo Garay * @ops: object operations 11043ecbfd65SHarsha Sharma * @data: object data, layout depends on type 1105e5009240SPablo Neira Ayuso */ 1106e5009240SPablo Neira Ayuso struct nft_object { 1107e5009240SPablo Neira Ayuso struct list_head list; 11084d44175aSFlorian Westphal struct rhlist_head rhlhead; 1109d152159bSFlorian Westphal struct nft_object_hash_key key; 1110e5009240SPablo Neira Ayuso u32 genmask:2, 1111e5009240SPablo Neira Ayuso use:30; 11123ecbfd65SHarsha Sharma u64 handle; 1113e5009240SPablo Neira Ayuso /* runtime data below here */ 1114dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops ____cacheline_aligned; 1115e5009240SPablo Neira Ayuso unsigned char data[] 1116e5009240SPablo Neira Ayuso __attribute__((aligned(__alignof__(u64)))); 1117e5009240SPablo Neira Ayuso }; 1118e5009240SPablo Neira Ayuso 1119e5009240SPablo Neira Ayuso static inline void *nft_obj_data(const struct nft_object *obj) 1120e5009240SPablo Neira Ayuso { 1121e5009240SPablo Neira Ayuso return (void *)obj->data; 1122e5009240SPablo Neira Ayuso } 1123e5009240SPablo Neira Ayuso 1124e5009240SPablo Neira Ayuso #define nft_expr_obj(expr) *((struct nft_object **)nft_expr_priv(expr)) 1125e5009240SPablo Neira Ayuso 11264d44175aSFlorian Westphal struct nft_object *nft_obj_lookup(const struct net *net, 11274d44175aSFlorian Westphal const struct nft_table *table, 1128e5009240SPablo Neira Ayuso const struct nlattr *nla, u32 objtype, 1129e5009240SPablo Neira Ayuso u8 genmask); 1130e5009240SPablo Neira Ayuso 1131d152159bSFlorian Westphal void nft_obj_notify(struct net *net, const struct nft_table *table, 11322599e989SPablo Neira Ayuso struct nft_object *obj, u32 portid, u32 seq, 11332599e989SPablo Neira Ayuso int event, int family, int report, gfp_t gfp); 11342599e989SPablo Neira Ayuso 1135e5009240SPablo Neira Ayuso /** 1136e5009240SPablo Neira Ayuso * struct nft_object_type - stateful object type 1137e5009240SPablo Neira Ayuso * 1138dfc46034SPablo M. Bermudo Garay * @select_ops: function to select nft_object_ops 1139dfc46034SPablo M. Bermudo Garay * @ops: default ops, used when no select_ops functions is present 1140e5009240SPablo Neira Ayuso * @list: list node in list of object types 1141e5009240SPablo Neira Ayuso * @type: stateful object numeric type 1142e5009240SPablo Neira Ayuso * @owner: module owner 1143e5009240SPablo Neira Ayuso * @maxattr: maximum netlink attribute 1144e5009240SPablo Neira Ayuso * @policy: netlink attribute policy 1145dfc46034SPablo M. Bermudo Garay */ 1146dfc46034SPablo M. Bermudo Garay struct nft_object_type { 1147dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *(*select_ops)(const struct nft_ctx *, 1148dfc46034SPablo M. Bermudo Garay const struct nlattr * const tb[]); 1149dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops; 1150dfc46034SPablo M. Bermudo Garay struct list_head list; 1151dfc46034SPablo M. Bermudo Garay u32 type; 1152dfc46034SPablo M. Bermudo Garay unsigned int maxattr; 1153dfc46034SPablo M. Bermudo Garay struct module *owner; 1154dfc46034SPablo M. Bermudo Garay const struct nla_policy *policy; 1155dfc46034SPablo M. Bermudo Garay }; 1156dfc46034SPablo M. Bermudo Garay 1157dfc46034SPablo M. Bermudo Garay /** 1158dfc46034SPablo M. Bermudo Garay * struct nft_object_ops - stateful object operations 1159dfc46034SPablo M. Bermudo Garay * 1160dfc46034SPablo M. Bermudo Garay * @eval: stateful object evaluation function 1161dfc46034SPablo M. Bermudo Garay * @size: stateful object size 1162e5009240SPablo Neira Ayuso * @init: initialize object from netlink attributes 1163e5009240SPablo Neira Ayuso * @destroy: release existing stateful object 1164e5009240SPablo Neira Ayuso * @dump: netlink dump stateful object 1165d62d0ba9SFernando Fernandez Mancera * @update: update stateful object 1166e5009240SPablo Neira Ayuso */ 1167dfc46034SPablo M. Bermudo Garay struct nft_object_ops { 1168e5009240SPablo Neira Ayuso void (*eval)(struct nft_object *obj, 1169e5009240SPablo Neira Ayuso struct nft_regs *regs, 1170e5009240SPablo Neira Ayuso const struct nft_pktinfo *pkt); 1171e5009240SPablo Neira Ayuso unsigned int size; 117284fba055SFlorian Westphal int (*init)(const struct nft_ctx *ctx, 117384fba055SFlorian Westphal const struct nlattr *const tb[], 1174e5009240SPablo Neira Ayuso struct nft_object *obj); 117500bfb320SPablo Neira Ayuso void (*destroy)(const struct nft_ctx *ctx, 117600bfb320SPablo Neira Ayuso struct nft_object *obj); 1177e5009240SPablo Neira Ayuso int (*dump)(struct sk_buff *skb, 117843da04a5SPablo Neira Ayuso struct nft_object *obj, 117943da04a5SPablo Neira Ayuso bool reset); 1180d62d0ba9SFernando Fernandez Mancera void (*update)(struct nft_object *obj, 1181d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj); 1182dfc46034SPablo M. Bermudo Garay const struct nft_object_type *type; 1183e5009240SPablo Neira Ayuso }; 1184e5009240SPablo Neira Ayuso 1185e5009240SPablo Neira Ayuso int nft_register_obj(struct nft_object_type *obj_type); 1186e5009240SPablo Neira Ayuso void nft_unregister_obj(struct nft_object_type *obj_type); 1187e5009240SPablo Neira Ayuso 1188cb662ac6SPablo Neira Ayuso #define NFT_NETDEVICE_MAX 256 1189d92191aaSPablo Neira Ayuso 1190e5009240SPablo Neira Ayuso /** 11913b49e2e9SPablo Neira Ayuso * struct nft_flowtable - nf_tables flow table 11923b49e2e9SPablo Neira Ayuso * 11933b49e2e9SPablo Neira Ayuso * @list: flow table list node in table list 11943b49e2e9SPablo Neira Ayuso * @table: the table the flow table is contained in 11953b49e2e9SPablo Neira Ayuso * @name: name of this flow table 11963b49e2e9SPablo Neira Ayuso * @hooknum: hook number 11973b49e2e9SPablo Neira Ayuso * @ops_len: number of hooks in array 11983b49e2e9SPablo Neira Ayuso * @genmask: generation mask 11993b49e2e9SPablo Neira Ayuso * @use: number of references to this flow table 12003ecbfd65SHarsha Sharma * @handle: unique object handle 1201d92191aaSPablo Neira Ayuso * @dev_name: array of device names 12023b49e2e9SPablo Neira Ayuso * @data: rhashtable and garbage collector 12033b49e2e9SPablo Neira Ayuso * @ops: array of hooks 12043b49e2e9SPablo Neira Ayuso */ 12053b49e2e9SPablo Neira Ayuso struct nft_flowtable { 12063b49e2e9SPablo Neira Ayuso struct list_head list; 12073b49e2e9SPablo Neira Ayuso struct nft_table *table; 12083b49e2e9SPablo Neira Ayuso char *name; 12093b49e2e9SPablo Neira Ayuso int hooknum; 12103b49e2e9SPablo Neira Ayuso int ops_len; 12113b49e2e9SPablo Neira Ayuso u32 genmask:2, 12123b49e2e9SPablo Neira Ayuso use:30; 12133ecbfd65SHarsha Sharma u64 handle; 12143b49e2e9SPablo Neira Ayuso /* runtime data below here */ 12153f0465a9SPablo Neira Ayuso struct list_head hook_list ____cacheline_aligned; 12163b49e2e9SPablo Neira Ayuso struct nf_flowtable data; 12173b49e2e9SPablo Neira Ayuso }; 12183b49e2e9SPablo Neira Ayuso 1219cac20fcdSPablo Neira Ayuso struct nft_flowtable *nft_flowtable_lookup(const struct nft_table *table, 12203b49e2e9SPablo Neira Ayuso const struct nlattr *nla, 12213b49e2e9SPablo Neira Ayuso u8 genmask); 12223b49e2e9SPablo Neira Ayuso 12239b05b6e1SLaura Garcia Liebana void nf_tables_deactivate_flowtable(const struct nft_ctx *ctx, 12249b05b6e1SLaura Garcia Liebana struct nft_flowtable *flowtable, 12259b05b6e1SLaura Garcia Liebana enum nft_trans_phase phase); 12269b05b6e1SLaura Garcia Liebana 12273b49e2e9SPablo Neira Ayuso void nft_register_flowtable_type(struct nf_flowtable_type *type); 12283b49e2e9SPablo Neira Ayuso void nft_unregister_flowtable_type(struct nf_flowtable_type *type); 12293b49e2e9SPablo Neira Ayuso 12303b49e2e9SPablo Neira Ayuso /** 123133d5a7b1SFlorian Westphal * struct nft_traceinfo - nft tracing information and state 123233d5a7b1SFlorian Westphal * 123333d5a7b1SFlorian Westphal * @pkt: pktinfo currently processed 123433d5a7b1SFlorian Westphal * @basechain: base chain currently processed 123533d5a7b1SFlorian Westphal * @chain: chain currently processed 123633d5a7b1SFlorian Westphal * @rule: rule that was evaluated 123733d5a7b1SFlorian Westphal * @verdict: verdict given by rule 123833d5a7b1SFlorian Westphal * @type: event type (enum nft_trace_types) 123933d5a7b1SFlorian Westphal * @packet_dumped: packet headers sent in a previous traceinfo message 124033d5a7b1SFlorian Westphal * @trace: other struct members are initialised 124133d5a7b1SFlorian Westphal */ 124233d5a7b1SFlorian Westphal struct nft_traceinfo { 124333d5a7b1SFlorian Westphal const struct nft_pktinfo *pkt; 124433d5a7b1SFlorian Westphal const struct nft_base_chain *basechain; 124533d5a7b1SFlorian Westphal const struct nft_chain *chain; 124633d5a7b1SFlorian Westphal const struct nft_rule *rule; 124733d5a7b1SFlorian Westphal const struct nft_verdict *verdict; 124833d5a7b1SFlorian Westphal enum nft_trace_types type; 124933d5a7b1SFlorian Westphal bool packet_dumped; 125033d5a7b1SFlorian Westphal bool trace; 125133d5a7b1SFlorian Westphal }; 125233d5a7b1SFlorian Westphal 125333d5a7b1SFlorian Westphal void nft_trace_init(struct nft_traceinfo *info, const struct nft_pktinfo *pkt, 125433d5a7b1SFlorian Westphal const struct nft_verdict *verdict, 125533d5a7b1SFlorian Westphal const struct nft_chain *basechain); 125633d5a7b1SFlorian Westphal 125733d5a7b1SFlorian Westphal void nft_trace_notify(struct nft_traceinfo *info); 125833d5a7b1SFlorian Westphal 12599370761cSPablo Neira Ayuso #define MODULE_ALIAS_NFT_CHAIN(family, name) \ 12609370761cSPablo Neira Ayuso MODULE_ALIAS("nft-chain-" __stringify(family) "-" name) 126196518518SPatrick McHardy 126264d46806SPatrick McHardy #define MODULE_ALIAS_NFT_AF_EXPR(family, name) \ 126364d46806SPatrick McHardy MODULE_ALIAS("nft-expr-" __stringify(family) "-" name) 126464d46806SPatrick McHardy 126596518518SPatrick McHardy #define MODULE_ALIAS_NFT_EXPR(name) \ 126696518518SPatrick McHardy MODULE_ALIAS("nft-expr-" name) 126796518518SPatrick McHardy 1268e5009240SPablo Neira Ayuso #define MODULE_ALIAS_NFT_OBJ(type) \ 1269e5009240SPablo Neira Ayuso MODULE_ALIAS("nft-obj-" __stringify(type)) 1270e5009240SPablo Neira Ayuso 127147e640afSJeremy Sowden #if IS_ENABLED(CONFIG_NF_TABLES) 127247e640afSJeremy Sowden 1273ea4bd995SPatrick McHardy /* 1274ea4bd995SPatrick McHardy * The gencursor defines two generations, the currently active and the 1275ea4bd995SPatrick McHardy * next one. Objects contain a bitmask of 2 bits specifying the generations 1276ea4bd995SPatrick McHardy * they're active in. A set bit means they're inactive in the generation 1277ea4bd995SPatrick McHardy * represented by that bit. 1278ea4bd995SPatrick McHardy * 1279ea4bd995SPatrick McHardy * New objects start out as inactive in the current and active in the 1280ea4bd995SPatrick McHardy * next generation. When committing the ruleset the bitmask is cleared, 1281ea4bd995SPatrick McHardy * meaning they're active in all generations. When removing an object, 1282ea4bd995SPatrick McHardy * it is set inactive in the next generation. After committing the ruleset, 1283ea4bd995SPatrick McHardy * the objects are removed. 1284ea4bd995SPatrick McHardy */ 1285ea4bd995SPatrick McHardy static inline unsigned int nft_gencursor_next(const struct net *net) 1286ea4bd995SPatrick McHardy { 1287ea4bd995SPatrick McHardy return net->nft.gencursor + 1 == 1 ? 1 : 0; 1288ea4bd995SPatrick McHardy } 1289ea4bd995SPatrick McHardy 1290ea4bd995SPatrick McHardy static inline u8 nft_genmask_next(const struct net *net) 1291ea4bd995SPatrick McHardy { 1292ea4bd995SPatrick McHardy return 1 << nft_gencursor_next(net); 1293ea4bd995SPatrick McHardy } 1294ea4bd995SPatrick McHardy 1295ea4bd995SPatrick McHardy static inline u8 nft_genmask_cur(const struct net *net) 1296ea4bd995SPatrick McHardy { 129714cd5d4aSMark Rutland /* Use READ_ONCE() to prevent refetching the value for atomicity */ 129814cd5d4aSMark Rutland return 1 << READ_ONCE(net->nft.gencursor); 1299ea4bd995SPatrick McHardy } 1300ea4bd995SPatrick McHardy 130122fe54d5SPatrick McHardy #define NFT_GENMASK_ANY ((1 << 0) | (1 << 1)) 130222fe54d5SPatrick McHardy 1303cc02e457SPatrick McHardy /* 1304889f7ee7SPablo Neira Ayuso * Generic transaction helpers 1305889f7ee7SPablo Neira Ayuso */ 1306889f7ee7SPablo Neira Ayuso 1307889f7ee7SPablo Neira Ayuso /* Check if this object is currently active. */ 1308889f7ee7SPablo Neira Ayuso #define nft_is_active(__net, __obj) \ 1309889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_cur(__net)) == 0) 1310889f7ee7SPablo Neira Ayuso 1311889f7ee7SPablo Neira Ayuso /* Check if this object is active in the next generation. */ 1312889f7ee7SPablo Neira Ayuso #define nft_is_active_next(__net, __obj) \ 1313889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_next(__net)) == 0) 1314889f7ee7SPablo Neira Ayuso 1315889f7ee7SPablo Neira Ayuso /* This object becomes active in the next generation. */ 1316889f7ee7SPablo Neira Ayuso #define nft_activate_next(__net, __obj) \ 1317889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_cur(__net) 1318889f7ee7SPablo Neira Ayuso 1319889f7ee7SPablo Neira Ayuso /* This object becomes inactive in the next generation. */ 1320889f7ee7SPablo Neira Ayuso #define nft_deactivate_next(__net, __obj) \ 1321889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_next(__net) 1322889f7ee7SPablo Neira Ayuso 1323889f7ee7SPablo Neira Ayuso /* After committing the ruleset, clear the stale generation bit. */ 1324889f7ee7SPablo Neira Ayuso #define nft_clear(__net, __obj) \ 1325889f7ee7SPablo Neira Ayuso (__obj)->genmask &= ~nft_genmask_next(__net) 1326f2a6d766SPablo Neira Ayuso #define nft_active_genmask(__obj, __genmask) \ 1327f2a6d766SPablo Neira Ayuso !((__obj)->genmask & __genmask) 1328889f7ee7SPablo Neira Ayuso 1329889f7ee7SPablo Neira Ayuso /* 1330cc02e457SPatrick McHardy * Set element transaction helpers 1331cc02e457SPatrick McHardy */ 1332cc02e457SPatrick McHardy 1333cc02e457SPatrick McHardy static inline bool nft_set_elem_active(const struct nft_set_ext *ext, 1334cc02e457SPatrick McHardy u8 genmask) 1335cc02e457SPatrick McHardy { 1336cc02e457SPatrick McHardy return !(ext->genmask & genmask); 1337cc02e457SPatrick McHardy } 1338cc02e457SPatrick McHardy 133942a55769SPablo Neira Ayuso static inline void nft_set_elem_change_active(const struct net *net, 134042a55769SPablo Neira Ayuso const struct nft_set *set, 1341cc02e457SPatrick McHardy struct nft_set_ext *ext) 1342cc02e457SPatrick McHardy { 134342a55769SPablo Neira Ayuso ext->genmask ^= nft_genmask_next(net); 1344cc02e457SPatrick McHardy } 1345cc02e457SPatrick McHardy 134647e640afSJeremy Sowden #endif /* IS_ENABLED(CONFIG_NF_TABLES) */ 134747e640afSJeremy Sowden 134869086658SPatrick McHardy /* 134969086658SPatrick McHardy * We use a free bit in the genmask field to indicate the element 135069086658SPatrick McHardy * is busy, meaning it is currently being processed either by 135169086658SPatrick McHardy * the netlink API or GC. 135269086658SPatrick McHardy * 135369086658SPatrick McHardy * Even though the genmask is only a single byte wide, this works 135469086658SPatrick McHardy * because the extension structure if fully constant once initialized, 135569086658SPatrick McHardy * so there are no non-atomic write accesses unless it is already 135669086658SPatrick McHardy * marked busy. 135769086658SPatrick McHardy */ 135869086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_MASK (1 << 2) 135969086658SPatrick McHardy 136069086658SPatrick McHardy #if defined(__LITTLE_ENDIAN_BITFIELD) 136169086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT 2 136269086658SPatrick McHardy #elif defined(__BIG_ENDIAN_BITFIELD) 136369086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT (BITS_PER_LONG - BITS_PER_BYTE + 2) 136469086658SPatrick McHardy #else 136569086658SPatrick McHardy #error 136669086658SPatrick McHardy #endif 136769086658SPatrick McHardy 136869086658SPatrick McHardy static inline int nft_set_elem_mark_busy(struct nft_set_ext *ext) 136969086658SPatrick McHardy { 137069086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 137169086658SPatrick McHardy 137269086658SPatrick McHardy BUILD_BUG_ON(offsetof(struct nft_set_ext, genmask) != 0); 137369086658SPatrick McHardy return test_and_set_bit(NFT_SET_ELEM_BUSY_BIT, word); 137469086658SPatrick McHardy } 137569086658SPatrick McHardy 137669086658SPatrick McHardy static inline void nft_set_elem_clear_busy(struct nft_set_ext *ext) 137769086658SPatrick McHardy { 137869086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 137969086658SPatrick McHardy 138069086658SPatrick McHardy clear_bit(NFT_SET_ELEM_BUSY_BIT, word); 138169086658SPatrick McHardy } 138269086658SPatrick McHardy 13831a1e1a12SPatrick McHardy /** 13841a1e1a12SPatrick McHardy * struct nft_trans - nf_tables object update in transaction 13851a1e1a12SPatrick McHardy * 13861a1e1a12SPatrick McHardy * @list: used internally 13871a1e1a12SPatrick McHardy * @msg_type: message type 13880935d558SFlorian Westphal * @put_net: ctx->net needs to be put 13891a1e1a12SPatrick McHardy * @ctx: transaction context 13901a1e1a12SPatrick McHardy * @data: internal information related to the transaction 13911a1e1a12SPatrick McHardy */ 13921a1e1a12SPatrick McHardy struct nft_trans { 13931a1e1a12SPatrick McHardy struct list_head list; 13941a1e1a12SPatrick McHardy int msg_type; 13950935d558SFlorian Westphal bool put_net; 13961a1e1a12SPatrick McHardy struct nft_ctx ctx; 13976daf1414SGustavo A. R. Silva char data[]; 13981a1e1a12SPatrick McHardy }; 13991a1e1a12SPatrick McHardy 14001a1e1a12SPatrick McHardy struct nft_trans_rule { 14011a1e1a12SPatrick McHardy struct nft_rule *rule; 1402c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow; 14031a94e38dSPablo Neira Ayuso u32 rule_id; 14041a1e1a12SPatrick McHardy }; 14051a1e1a12SPatrick McHardy 14061a1e1a12SPatrick McHardy #define nft_trans_rule(trans) \ 14071a1e1a12SPatrick McHardy (((struct nft_trans_rule *)trans->data)->rule) 1408c9626a2cSPablo Neira Ayuso #define nft_trans_flow_rule(trans) \ 1409c9626a2cSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->flow) 14101a94e38dSPablo Neira Ayuso #define nft_trans_rule_id(trans) \ 14111a94e38dSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->rule_id) 14121a1e1a12SPatrick McHardy 14131a1e1a12SPatrick McHardy struct nft_trans_set { 14141a1e1a12SPatrick McHardy struct nft_set *set; 14151a1e1a12SPatrick McHardy u32 set_id; 14166a0a8d10SPablo Neira Ayuso bool bound; 14171a1e1a12SPatrick McHardy }; 14181a1e1a12SPatrick McHardy 14191a1e1a12SPatrick McHardy #define nft_trans_set(trans) \ 14201a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set) 14211a1e1a12SPatrick McHardy #define nft_trans_set_id(trans) \ 14221a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set_id) 14236a0a8d10SPablo Neira Ayuso #define nft_trans_set_bound(trans) \ 14246a0a8d10SPablo Neira Ayuso (((struct nft_trans_set *)trans->data)->bound) 14251a1e1a12SPatrick McHardy 14261a1e1a12SPatrick McHardy struct nft_trans_chain { 14271a1e1a12SPatrick McHardy bool update; 1428b7263e07SPhil Sutter char *name; 14291a1e1a12SPatrick McHardy struct nft_stats __percpu *stats; 14301a1e1a12SPatrick McHardy u8 policy; 14311a1e1a12SPatrick McHardy }; 14321a1e1a12SPatrick McHardy 14331a1e1a12SPatrick McHardy #define nft_trans_chain_update(trans) \ 14341a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->update) 14351a1e1a12SPatrick McHardy #define nft_trans_chain_name(trans) \ 14361a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->name) 14371a1e1a12SPatrick McHardy #define nft_trans_chain_stats(trans) \ 14381a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->stats) 14391a1e1a12SPatrick McHardy #define nft_trans_chain_policy(trans) \ 14401a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->policy) 14411a1e1a12SPatrick McHardy 14421a1e1a12SPatrick McHardy struct nft_trans_table { 14431a1e1a12SPatrick McHardy bool update; 14441a1e1a12SPatrick McHardy bool enable; 14451a1e1a12SPatrick McHardy }; 14461a1e1a12SPatrick McHardy 14471a1e1a12SPatrick McHardy #define nft_trans_table_update(trans) \ 14481a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->update) 14491a1e1a12SPatrick McHardy #define nft_trans_table_enable(trans) \ 14501a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->enable) 14511a1e1a12SPatrick McHardy 14521a1e1a12SPatrick McHardy struct nft_trans_elem { 14531a1e1a12SPatrick McHardy struct nft_set *set; 14541a1e1a12SPatrick McHardy struct nft_set_elem elem; 14556a0a8d10SPablo Neira Ayuso bool bound; 14561a1e1a12SPatrick McHardy }; 14571a1e1a12SPatrick McHardy 14581a1e1a12SPatrick McHardy #define nft_trans_elem_set(trans) \ 14591a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->set) 14601a1e1a12SPatrick McHardy #define nft_trans_elem(trans) \ 14611a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->elem) 14626a0a8d10SPablo Neira Ayuso #define nft_trans_elem_set_bound(trans) \ 14636a0a8d10SPablo Neira Ayuso (((struct nft_trans_elem *)trans->data)->bound) 14641a1e1a12SPatrick McHardy 1465e5009240SPablo Neira Ayuso struct nft_trans_obj { 1466e5009240SPablo Neira Ayuso struct nft_object *obj; 1467d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj; 1468d62d0ba9SFernando Fernandez Mancera bool update; 1469e5009240SPablo Neira Ayuso }; 1470e5009240SPablo Neira Ayuso 1471e5009240SPablo Neira Ayuso #define nft_trans_obj(trans) \ 1472e5009240SPablo Neira Ayuso (((struct nft_trans_obj *)trans->data)->obj) 1473d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_newobj(trans) \ 1474d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->newobj) 1475d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_update(trans) \ 1476d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->update) 1477e5009240SPablo Neira Ayuso 14783b49e2e9SPablo Neira Ayuso struct nft_trans_flowtable { 14793b49e2e9SPablo Neira Ayuso struct nft_flowtable *flowtable; 14803b49e2e9SPablo Neira Ayuso }; 14813b49e2e9SPablo Neira Ayuso 14823b49e2e9SPablo Neira Ayuso #define nft_trans_flowtable(trans) \ 14833b49e2e9SPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->flowtable) 14843b49e2e9SPablo Neira Ayuso 148502c7b25eSPablo Neira Ayuso int __init nft_chain_filter_init(void); 1486d209df3eSFlorian Westphal void nft_chain_filter_fini(void); 148702c7b25eSPablo Neira Ayuso 1488c1deb065SFlorian Westphal void __init nft_chain_route_init(void); 1489c1deb065SFlorian Westphal void nft_chain_route_fini(void); 149096518518SPatrick McHardy #endif /* _NET_NF_TABLES_H */ 1491