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 269c50b960cSPatrick McHardy */ 270c50b960cSPatrick McHardy struct nft_set_desc { 271c50b960cSPatrick McHardy unsigned int klen; 272c50b960cSPatrick McHardy unsigned int dlen; 273c50b960cSPatrick McHardy unsigned int size; 274f3a2181eSStefano Brivio u8 field_len[NFT_REG32_COUNT]; 275f3a2181eSStefano Brivio u8 field_count; 276c50b960cSPatrick McHardy }; 277c50b960cSPatrick McHardy 278c50b960cSPatrick McHardy /** 279c50b960cSPatrick McHardy * enum nft_set_class - performance class 280c50b960cSPatrick McHardy * 281c50b960cSPatrick McHardy * @NFT_LOOKUP_O_1: constant, O(1) 282c50b960cSPatrick McHardy * @NFT_LOOKUP_O_LOG_N: logarithmic, O(log N) 283c50b960cSPatrick McHardy * @NFT_LOOKUP_O_N: linear, O(N) 284c50b960cSPatrick McHardy */ 285c50b960cSPatrick McHardy enum nft_set_class { 286c50b960cSPatrick McHardy NFT_SET_CLASS_O_1, 287c50b960cSPatrick McHardy NFT_SET_CLASS_O_LOG_N, 288c50b960cSPatrick McHardy NFT_SET_CLASS_O_N, 289c50b960cSPatrick McHardy }; 290c50b960cSPatrick McHardy 291c50b960cSPatrick McHardy /** 292c50b960cSPatrick McHardy * struct nft_set_estimate - estimation of memory and performance 293c50b960cSPatrick McHardy * characteristics 294c50b960cSPatrick McHardy * 295c50b960cSPatrick McHardy * @size: required memory 29655af753cSPablo Neira Ayuso * @lookup: lookup performance class 2970b5a7874SPablo Neira Ayuso * @space: memory class 298c50b960cSPatrick McHardy */ 299c50b960cSPatrick McHardy struct nft_set_estimate { 3004ef360ddSTaehee Yoo u64 size; 30155af753cSPablo Neira Ayuso enum nft_set_class lookup; 3020b5a7874SPablo Neira Ayuso enum nft_set_class space; 303c50b960cSPatrick McHardy }; 304c50b960cSPatrick McHardy 305b2832dd6SPatrick McHardy struct nft_set_ext; 30622fe54d5SPatrick McHardy struct nft_expr; 307b2832dd6SPatrick McHardy 308c50b960cSPatrick McHardy /** 30920a69341SPatrick McHardy * struct nft_set_ops - nf_tables set operations 31020a69341SPatrick McHardy * 31120a69341SPatrick McHardy * @lookup: look up an element within the set 312d0a8d877SAnder Juaristi * @update: update an element if exists, add it if doesn't exist 313d0a8d877SAnder Juaristi * @delete: delete an element 31420a69341SPatrick McHardy * @insert: insert new element into set 315cc02e457SPatrick McHardy * @activate: activate new element in the next generation 3168411b644SPablo Neira Ayuso * @deactivate: lookup for element and deactivate it in the next generation 3171ba1c414SPablo Neira Ayuso * @flush: deactivate element in the next generation 31820a69341SPatrick McHardy * @remove: remove element from set 319d0a8d877SAnder Juaristi * @walk: iterate over all set elements 320ba0e4d99SPablo Neira Ayuso * @get: get set elements 32120a69341SPatrick McHardy * @privsize: function to return size of set private data 32220a69341SPatrick McHardy * @init: initialize private data of new set instance 32320a69341SPatrick McHardy * @destroy: destroy private data of set instance 324fe2811ebSPatrick McHardy * @elemsize: element private size 325d0a8d877SAnder Juaristi * 326d0a8d877SAnder Juaristi * Operations lookup, update and delete have simpler interfaces, are faster 327d0a8d877SAnder Juaristi * and currently only used in the packet path. All the rest are slower, 328d0a8d877SAnder Juaristi * control plane functions. 32920a69341SPatrick McHardy */ 33020a69341SPatrick McHardy struct nft_set_ops { 33142a55769SPablo Neira Ayuso bool (*lookup)(const struct net *net, 33242a55769SPablo Neira Ayuso const struct nft_set *set, 3338cd8937aSPatrick McHardy const u32 *key, 334b2832dd6SPatrick McHardy const struct nft_set_ext **ext); 33522fe54d5SPatrick McHardy bool (*update)(struct nft_set *set, 3368cd8937aSPatrick McHardy const u32 *key, 33722fe54d5SPatrick McHardy void *(*new)(struct nft_set *, 33822fe54d5SPatrick McHardy const struct nft_expr *, 339a55e22e9SPatrick McHardy struct nft_regs *), 34022fe54d5SPatrick McHardy const struct nft_expr *expr, 341a55e22e9SPatrick McHardy struct nft_regs *regs, 34222fe54d5SPatrick McHardy const struct nft_set_ext **ext); 343d0a8d877SAnder Juaristi bool (*delete)(const struct nft_set *set, 344d0a8d877SAnder Juaristi const u32 *key); 34522fe54d5SPatrick McHardy 34642a55769SPablo Neira Ayuso int (*insert)(const struct net *net, 34742a55769SPablo Neira Ayuso const struct nft_set *set, 348c016c7e4SPablo Neira Ayuso const struct nft_set_elem *elem, 349c016c7e4SPablo Neira Ayuso struct nft_set_ext **ext); 35042a55769SPablo Neira Ayuso void (*activate)(const struct net *net, 35142a55769SPablo Neira Ayuso const struct nft_set *set, 352cc02e457SPatrick McHardy const struct nft_set_elem *elem); 35342a55769SPablo Neira Ayuso void * (*deactivate)(const struct net *net, 35442a55769SPablo Neira Ayuso const struct nft_set *set, 355cc02e457SPatrick McHardy const struct nft_set_elem *elem); 3561ba1c414SPablo Neira Ayuso bool (*flush)(const struct net *net, 3578411b644SPablo Neira Ayuso const struct nft_set *set, 3588411b644SPablo Neira Ayuso void *priv); 3595cb82a38SPablo Neira Ayuso void (*remove)(const struct net *net, 3605cb82a38SPablo Neira Ayuso const struct nft_set *set, 36120a69341SPatrick McHardy const struct nft_set_elem *elem); 36220a69341SPatrick McHardy void (*walk)(const struct nft_ctx *ctx, 363de70185dSPablo Neira Ayuso struct nft_set *set, 36420a69341SPatrick McHardy struct nft_set_iter *iter); 365ba0e4d99SPablo Neira Ayuso void * (*get)(const struct net *net, 366ba0e4d99SPablo Neira Ayuso const struct nft_set *set, 367ba0e4d99SPablo Neira Ayuso const struct nft_set_elem *elem, 368ba0e4d99SPablo Neira Ayuso unsigned int flags); 36920a69341SPatrick McHardy 3704ef360ddSTaehee Yoo u64 (*privsize)(const struct nlattr * const nla[], 371347b408dSPablo Neira Ayuso const struct nft_set_desc *desc); 372c50b960cSPatrick McHardy bool (*estimate)(const struct nft_set_desc *desc, 373c50b960cSPatrick McHardy u32 features, 374c50b960cSPatrick McHardy struct nft_set_estimate *est); 37520a69341SPatrick McHardy int (*init)(const struct nft_set *set, 376c50b960cSPatrick McHardy const struct nft_set_desc *desc, 37720a69341SPatrick McHardy const struct nlattr * const nla[]); 37820a69341SPatrick McHardy void (*destroy)(const struct nft_set *set); 37979b174adSPablo Neira Ayuso void (*gc_init)(const struct nft_set *set); 38020a69341SPatrick McHardy 381fe2811ebSPatrick McHardy unsigned int elemsize; 38220a69341SPatrick McHardy }; 38320a69341SPatrick McHardy 38471cc0873SPhil Sutter /** 38571cc0873SPhil Sutter * struct nft_set_type - nf_tables set type 38671cc0873SPhil Sutter * 38771cc0873SPhil Sutter * @ops: set ops for this type 38871cc0873SPhil Sutter * @features: features supported by the implementation 38971cc0873SPhil Sutter */ 39071cc0873SPhil Sutter struct nft_set_type { 39171cc0873SPhil Sutter const struct nft_set_ops ops; 39271cc0873SPhil Sutter u32 features; 39371cc0873SPhil Sutter }; 39471cc0873SPhil Sutter #define to_set_type(o) container_of(o, struct nft_set_type, ops) 39571cc0873SPhil Sutter 39620a69341SPatrick McHardy /** 39720a69341SPatrick McHardy * struct nft_set - nf_tables set instance 39820a69341SPatrick McHardy * 39920a69341SPatrick McHardy * @list: table set list node 40020a69341SPatrick McHardy * @bindings: list of set bindings 4013453c927SPablo Neira Ayuso * @table: table this set belongs to 4023453c927SPablo Neira Ayuso * @net: netnamespace this set belongs to 40320a69341SPatrick McHardy * @name: name of the set 4043ecbfd65SHarsha Sharma * @handle: unique handle of the set 40520a69341SPatrick McHardy * @ktype: key type (numeric type defined by userspace, not used in the kernel) 40620a69341SPatrick McHardy * @dtype: data type (verdict or numeric type defined by userspace) 4078aeff920SPablo Neira Ayuso * @objtype: object type (see NFT_OBJECT_* definitions) 408c50b960cSPatrick McHardy * @size: maximum set size 409f3a2181eSStefano Brivio * @field_len: length of each field in concatenation, bytes 410f3a2181eSStefano Brivio * @field_count: number of concatenated fields in element 411273fe3f1SPablo Neira Ayuso * @use: number of rules references to this set 412c50b960cSPatrick McHardy * @nelems: number of elements 4133dd0673aSPatrick McHardy * @ndeact: number of deactivated elements queued for removal 414d3e2a111SAnders K. Pedersen * @timeout: default timeout value in jiffies 415761da293SPatrick McHardy * @gc_int: garbage collection interval in msecs 4169363dc4bSArturo Borrero * @policy: set parameterization (see enum nft_set_policies) 417e6d8ecacSCarlos Falgueras García * @udlen: user data length 418e6d8ecacSCarlos Falgueras García * @udata: user data 41920a69341SPatrick McHardy * @ops: set ops 42020a69341SPatrick McHardy * @flags: set flags 42137a9cc52SPablo Neira Ayuso * @genmask: generation mask 42220a69341SPatrick McHardy * @klen: key length 42320a69341SPatrick McHardy * @dlen: data length 42420a69341SPatrick McHardy * @data: private set data 42520a69341SPatrick McHardy */ 42620a69341SPatrick McHardy struct nft_set { 42720a69341SPatrick McHardy struct list_head list; 42820a69341SPatrick McHardy struct list_head bindings; 4293453c927SPablo Neira Ayuso struct nft_table *table; 4303453c927SPablo Neira Ayuso possible_net_t net; 43138745490SPhil Sutter char *name; 4323ecbfd65SHarsha Sharma u64 handle; 43320a69341SPatrick McHardy u32 ktype; 43420a69341SPatrick McHardy u32 dtype; 4358aeff920SPablo Neira Ayuso u32 objtype; 436c50b960cSPatrick McHardy u32 size; 437f3a2181eSStefano Brivio u8 field_len[NFT_REG32_COUNT]; 438f3a2181eSStefano Brivio u8 field_count; 439273fe3f1SPablo Neira Ayuso u32 use; 4403dd0673aSPatrick McHardy atomic_t nelems; 4413dd0673aSPatrick McHardy u32 ndeact; 442761da293SPatrick McHardy u64 timeout; 443761da293SPatrick McHardy u32 gc_int; 4449363dc4bSArturo Borrero u16 policy; 445e6d8ecacSCarlos Falgueras García u16 udlen; 446e6d8ecacSCarlos Falgueras García unsigned char *udata; 44720a69341SPatrick McHardy /* runtime data below here */ 44820a69341SPatrick McHardy const struct nft_set_ops *ops ____cacheline_aligned; 4496a0a8d10SPablo Neira Ayuso u16 flags:14, 45037a9cc52SPablo Neira Ayuso genmask:2; 45120a69341SPatrick McHardy u8 klen; 45220a69341SPatrick McHardy u8 dlen; 45320a69341SPatrick McHardy unsigned char data[] 45420a69341SPatrick McHardy __attribute__((aligned(__alignof__(u64)))); 45520a69341SPatrick McHardy }; 45620a69341SPatrick McHardy 457408070d6SPablo Neira Ayuso static inline bool nft_set_is_anonymous(const struct nft_set *set) 458408070d6SPablo Neira Ayuso { 459408070d6SPablo Neira Ayuso return set->flags & NFT_SET_ANONYMOUS; 460408070d6SPablo Neira Ayuso } 461408070d6SPablo Neira Ayuso 46220a69341SPatrick McHardy static inline void *nft_set_priv(const struct nft_set *set) 46320a69341SPatrick McHardy { 46420a69341SPatrick McHardy return (void *)set->data; 46520a69341SPatrick McHardy } 46620a69341SPatrick McHardy 4679d098292SPatrick McHardy static inline struct nft_set *nft_set_container_of(const void *priv) 4689d098292SPatrick McHardy { 4699d098292SPatrick McHardy return (void *)priv - offsetof(struct nft_set, data); 4709d098292SPatrick McHardy } 4719d098292SPatrick McHardy 47210659cbaSPablo Neira Ayuso struct nft_set *nft_set_lookup_global(const struct net *net, 473c7a72e3fSPablo Neira Ayuso const struct nft_table *table, 474c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_name, 475c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_id, 476c7a72e3fSPablo Neira Ayuso u8 genmask); 47720a69341SPatrick McHardy 478761da293SPatrick McHardy static inline unsigned long nft_set_gc_interval(const struct nft_set *set) 479761da293SPatrick McHardy { 480761da293SPatrick McHardy return set->gc_int ? msecs_to_jiffies(set->gc_int) : HZ; 481761da293SPatrick McHardy } 482761da293SPatrick McHardy 48320a69341SPatrick McHardy /** 48420a69341SPatrick McHardy * struct nft_set_binding - nf_tables set binding 48520a69341SPatrick McHardy * 48620a69341SPatrick McHardy * @list: set bindings list node 48720a69341SPatrick McHardy * @chain: chain containing the rule bound to the set 48811113e19SPatrick McHardy * @flags: set action flags 48920a69341SPatrick McHardy * 49020a69341SPatrick McHardy * A set binding contains all information necessary for validation 49120a69341SPatrick McHardy * of new elements added to a bound set. 49220a69341SPatrick McHardy */ 49320a69341SPatrick McHardy struct nft_set_binding { 49420a69341SPatrick McHardy struct list_head list; 49520a69341SPatrick McHardy const struct nft_chain *chain; 49611113e19SPatrick McHardy u32 flags; 49720a69341SPatrick McHardy }; 49820a69341SPatrick McHardy 499273fe3f1SPablo Neira Ayuso enum nft_trans_phase; 500273fe3f1SPablo Neira Ayuso void nf_tables_deactivate_set(const struct nft_ctx *ctx, struct nft_set *set, 501273fe3f1SPablo Neira Ayuso struct nft_set_binding *binding, 502273fe3f1SPablo Neira Ayuso enum nft_trans_phase phase); 5035eccdfaaSJoe Perches int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, 50420a69341SPatrick McHardy struct nft_set_binding *binding); 505cd5125d8SFlorian Westphal void nf_tables_destroy_set(const struct nft_ctx *ctx, struct nft_set *set); 50620a69341SPatrick McHardy 5073ac4c07aSPatrick McHardy /** 5083ac4c07aSPatrick McHardy * enum nft_set_extensions - set extension type IDs 5093ac4c07aSPatrick McHardy * 5103ac4c07aSPatrick McHardy * @NFT_SET_EXT_KEY: element key 5117b225d0bSPablo Neira Ayuso * @NFT_SET_EXT_KEY_END: upper bound element key, for ranges 5123ac4c07aSPatrick McHardy * @NFT_SET_EXT_DATA: mapping data 5133ac4c07aSPatrick McHardy * @NFT_SET_EXT_FLAGS: element flags 514c3e1b005SPatrick McHardy * @NFT_SET_EXT_TIMEOUT: element timeout 515c3e1b005SPatrick McHardy * @NFT_SET_EXT_EXPIRATION: element expiration time 51668e942e8SPatrick McHardy * @NFT_SET_EXT_USERDATA: user data associated with the element 517f25ad2e9SPatrick McHardy * @NFT_SET_EXT_EXPR: expression assiociated with the element 5188aeff920SPablo Neira Ayuso * @NFT_SET_EXT_OBJREF: stateful object reference associated with element 5193ac4c07aSPatrick McHardy * @NFT_SET_EXT_NUM: number of extension types 5203ac4c07aSPatrick McHardy */ 5213ac4c07aSPatrick McHardy enum nft_set_extensions { 5223ac4c07aSPatrick McHardy NFT_SET_EXT_KEY, 5237b225d0bSPablo Neira Ayuso NFT_SET_EXT_KEY_END, 5243ac4c07aSPatrick McHardy NFT_SET_EXT_DATA, 5253ac4c07aSPatrick McHardy NFT_SET_EXT_FLAGS, 526c3e1b005SPatrick McHardy NFT_SET_EXT_TIMEOUT, 527c3e1b005SPatrick McHardy NFT_SET_EXT_EXPIRATION, 52868e942e8SPatrick McHardy NFT_SET_EXT_USERDATA, 529f25ad2e9SPatrick McHardy NFT_SET_EXT_EXPR, 5308aeff920SPablo Neira Ayuso NFT_SET_EXT_OBJREF, 5313ac4c07aSPatrick McHardy NFT_SET_EXT_NUM 5323ac4c07aSPatrick McHardy }; 5333ac4c07aSPatrick McHardy 5343ac4c07aSPatrick McHardy /** 5353ac4c07aSPatrick McHardy * struct nft_set_ext_type - set extension type 5363ac4c07aSPatrick McHardy * 5373ac4c07aSPatrick McHardy * @len: fixed part length of the extension 5383ac4c07aSPatrick McHardy * @align: alignment requirements of the extension 5393ac4c07aSPatrick McHardy */ 5403ac4c07aSPatrick McHardy struct nft_set_ext_type { 5413ac4c07aSPatrick McHardy u8 len; 5423ac4c07aSPatrick McHardy u8 align; 5433ac4c07aSPatrick McHardy }; 5443ac4c07aSPatrick McHardy 5453ac4c07aSPatrick McHardy extern const struct nft_set_ext_type nft_set_ext_types[]; 5463ac4c07aSPatrick McHardy 5473ac4c07aSPatrick McHardy /** 5483ac4c07aSPatrick McHardy * struct nft_set_ext_tmpl - set extension template 5493ac4c07aSPatrick McHardy * 5503ac4c07aSPatrick McHardy * @len: length of extension area 5513ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 5523ac4c07aSPatrick McHardy */ 5533ac4c07aSPatrick McHardy struct nft_set_ext_tmpl { 5543ac4c07aSPatrick McHardy u16 len; 5553ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 5563ac4c07aSPatrick McHardy }; 5573ac4c07aSPatrick McHardy 5583ac4c07aSPatrick McHardy /** 5593ac4c07aSPatrick McHardy * struct nft_set_ext - set extensions 5603ac4c07aSPatrick McHardy * 561cc02e457SPatrick McHardy * @genmask: generation mask 5623ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 5633ac4c07aSPatrick McHardy * @data: beginning of extension data 5643ac4c07aSPatrick McHardy */ 5653ac4c07aSPatrick McHardy struct nft_set_ext { 566cc02e457SPatrick McHardy u8 genmask; 5673ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 5686daf1414SGustavo A. R. Silva char data[]; 5693ac4c07aSPatrick McHardy }; 5703ac4c07aSPatrick McHardy 5713ac4c07aSPatrick McHardy static inline void nft_set_ext_prepare(struct nft_set_ext_tmpl *tmpl) 5723ac4c07aSPatrick McHardy { 5733ac4c07aSPatrick McHardy memset(tmpl, 0, sizeof(*tmpl)); 5743ac4c07aSPatrick McHardy tmpl->len = sizeof(struct nft_set_ext); 5753ac4c07aSPatrick McHardy } 5763ac4c07aSPatrick McHardy 5773ac4c07aSPatrick McHardy static inline void nft_set_ext_add_length(struct nft_set_ext_tmpl *tmpl, u8 id, 5783ac4c07aSPatrick McHardy unsigned int len) 5793ac4c07aSPatrick McHardy { 5803ac4c07aSPatrick McHardy tmpl->len = ALIGN(tmpl->len, nft_set_ext_types[id].align); 5813ac4c07aSPatrick McHardy BUG_ON(tmpl->len > U8_MAX); 5823ac4c07aSPatrick McHardy tmpl->offset[id] = tmpl->len; 5833ac4c07aSPatrick McHardy tmpl->len += nft_set_ext_types[id].len + len; 5843ac4c07aSPatrick McHardy } 5853ac4c07aSPatrick McHardy 5863ac4c07aSPatrick McHardy static inline void nft_set_ext_add(struct nft_set_ext_tmpl *tmpl, u8 id) 5873ac4c07aSPatrick McHardy { 5883ac4c07aSPatrick McHardy nft_set_ext_add_length(tmpl, id, 0); 5893ac4c07aSPatrick McHardy } 5903ac4c07aSPatrick McHardy 5913ac4c07aSPatrick McHardy static inline void nft_set_ext_init(struct nft_set_ext *ext, 5923ac4c07aSPatrick McHardy const struct nft_set_ext_tmpl *tmpl) 5933ac4c07aSPatrick McHardy { 5943ac4c07aSPatrick McHardy memcpy(ext->offset, tmpl->offset, sizeof(ext->offset)); 5953ac4c07aSPatrick McHardy } 5963ac4c07aSPatrick McHardy 5973ac4c07aSPatrick McHardy static inline bool __nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) 5983ac4c07aSPatrick McHardy { 5993ac4c07aSPatrick McHardy return !!ext->offset[id]; 6003ac4c07aSPatrick McHardy } 6013ac4c07aSPatrick McHardy 6023ac4c07aSPatrick McHardy static inline bool nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) 6033ac4c07aSPatrick McHardy { 6043ac4c07aSPatrick McHardy return ext && __nft_set_ext_exists(ext, id); 6053ac4c07aSPatrick McHardy } 6063ac4c07aSPatrick McHardy 6073ac4c07aSPatrick McHardy static inline void *nft_set_ext(const struct nft_set_ext *ext, u8 id) 6083ac4c07aSPatrick McHardy { 6093ac4c07aSPatrick McHardy return (void *)ext + ext->offset[id]; 6103ac4c07aSPatrick McHardy } 6113ac4c07aSPatrick McHardy 6123ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_key(const struct nft_set_ext *ext) 6133ac4c07aSPatrick McHardy { 6143ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_KEY); 6153ac4c07aSPatrick McHardy } 6163ac4c07aSPatrick McHardy 6177b225d0bSPablo Neira Ayuso static inline struct nft_data *nft_set_ext_key_end(const struct nft_set_ext *ext) 6187b225d0bSPablo Neira Ayuso { 6197b225d0bSPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_KEY_END); 6207b225d0bSPablo Neira Ayuso } 6217b225d0bSPablo Neira Ayuso 6223ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_data(const struct nft_set_ext *ext) 6233ac4c07aSPatrick McHardy { 6243ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_DATA); 6253ac4c07aSPatrick McHardy } 6263ac4c07aSPatrick McHardy 6273ac4c07aSPatrick McHardy static inline u8 *nft_set_ext_flags(const struct nft_set_ext *ext) 6283ac4c07aSPatrick McHardy { 6293ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_FLAGS); 6303ac4c07aSPatrick McHardy } 631ef1f7df9SPatrick McHardy 632c3e1b005SPatrick McHardy static inline u64 *nft_set_ext_timeout(const struct nft_set_ext *ext) 633c3e1b005SPatrick McHardy { 634c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_TIMEOUT); 635c3e1b005SPatrick McHardy } 636c3e1b005SPatrick McHardy 6378e1102d5SFlorian Westphal static inline u64 *nft_set_ext_expiration(const struct nft_set_ext *ext) 638c3e1b005SPatrick McHardy { 639c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_EXPIRATION); 640c3e1b005SPatrick McHardy } 641c3e1b005SPatrick McHardy 64268e942e8SPatrick McHardy static inline struct nft_userdata *nft_set_ext_userdata(const struct nft_set_ext *ext) 64368e942e8SPatrick McHardy { 64468e942e8SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_USERDATA); 64568e942e8SPatrick McHardy } 64668e942e8SPatrick McHardy 647f25ad2e9SPatrick McHardy static inline struct nft_expr *nft_set_ext_expr(const struct nft_set_ext *ext) 648f25ad2e9SPatrick McHardy { 649f25ad2e9SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_EXPR); 650f25ad2e9SPatrick McHardy } 651f25ad2e9SPatrick McHardy 652c3e1b005SPatrick McHardy static inline bool nft_set_elem_expired(const struct nft_set_ext *ext) 653c3e1b005SPatrick McHardy { 654c3e1b005SPatrick McHardy return nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION) && 6558e1102d5SFlorian Westphal time_is_before_eq_jiffies64(*nft_set_ext_expiration(ext)); 656c3e1b005SPatrick McHardy } 657c3e1b005SPatrick McHardy 658fe2811ebSPatrick McHardy static inline struct nft_set_ext *nft_set_elem_ext(const struct nft_set *set, 659fe2811ebSPatrick McHardy void *elem) 660fe2811ebSPatrick McHardy { 661fe2811ebSPatrick McHardy return elem + set->ops->elemsize; 662fe2811ebSPatrick McHardy } 663fe2811ebSPatrick McHardy 6648aeff920SPablo Neira Ayuso static inline struct nft_object **nft_set_ext_obj(const struct nft_set_ext *ext) 6658aeff920SPablo Neira Ayuso { 6668aeff920SPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_OBJREF); 6678aeff920SPablo Neira Ayuso } 6688aeff920SPablo Neira Ayuso 66922fe54d5SPatrick McHardy void *nft_set_elem_init(const struct nft_set *set, 67022fe54d5SPatrick McHardy const struct nft_set_ext_tmpl *tmpl, 6717b225d0bSPablo Neira Ayuso const u32 *key, const u32 *key_end, const u32 *data, 67279ebb5bbSLaura Garcia Liebana u64 timeout, u64 expiration, gfp_t gfp); 67361f9e292SLiping Zhang void nft_set_elem_destroy(const struct nft_set *set, void *elem, 67461f9e292SLiping Zhang bool destroy_expr); 67561edafbbSPatrick McHardy 67620a69341SPatrick McHardy /** 677cfed7e1bSPatrick McHardy * struct nft_set_gc_batch_head - nf_tables set garbage collection batch 678cfed7e1bSPatrick McHardy * 679cfed7e1bSPatrick McHardy * @rcu: rcu head 680cfed7e1bSPatrick McHardy * @set: set the elements belong to 681cfed7e1bSPatrick McHardy * @cnt: count of elements 682cfed7e1bSPatrick McHardy */ 683cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head { 684cfed7e1bSPatrick McHardy struct rcu_head rcu; 685cfed7e1bSPatrick McHardy const struct nft_set *set; 686cfed7e1bSPatrick McHardy unsigned int cnt; 687cfed7e1bSPatrick McHardy }; 688cfed7e1bSPatrick McHardy 689cfed7e1bSPatrick McHardy #define NFT_SET_GC_BATCH_SIZE ((PAGE_SIZE - \ 690cfed7e1bSPatrick McHardy sizeof(struct nft_set_gc_batch_head)) / \ 691cfed7e1bSPatrick McHardy sizeof(void *)) 692cfed7e1bSPatrick McHardy 693cfed7e1bSPatrick McHardy /** 694cfed7e1bSPatrick McHardy * struct nft_set_gc_batch - nf_tables set garbage collection batch 695cfed7e1bSPatrick McHardy * 696cfed7e1bSPatrick McHardy * @head: GC batch head 697cfed7e1bSPatrick McHardy * @elems: garbage collection elements 698cfed7e1bSPatrick McHardy */ 699cfed7e1bSPatrick McHardy struct nft_set_gc_batch { 700cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head head; 701cfed7e1bSPatrick McHardy void *elems[NFT_SET_GC_BATCH_SIZE]; 702cfed7e1bSPatrick McHardy }; 703cfed7e1bSPatrick McHardy 704cfed7e1bSPatrick McHardy struct nft_set_gc_batch *nft_set_gc_batch_alloc(const struct nft_set *set, 705cfed7e1bSPatrick McHardy gfp_t gfp); 706cfed7e1bSPatrick McHardy void nft_set_gc_batch_release(struct rcu_head *rcu); 707cfed7e1bSPatrick McHardy 708cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_complete(struct nft_set_gc_batch *gcb) 709cfed7e1bSPatrick McHardy { 710cfed7e1bSPatrick McHardy if (gcb != NULL) 711cfed7e1bSPatrick McHardy call_rcu(&gcb->head.rcu, nft_set_gc_batch_release); 712cfed7e1bSPatrick McHardy } 713cfed7e1bSPatrick McHardy 714cfed7e1bSPatrick McHardy static inline struct nft_set_gc_batch * 715cfed7e1bSPatrick McHardy nft_set_gc_batch_check(const struct nft_set *set, struct nft_set_gc_batch *gcb, 716cfed7e1bSPatrick McHardy gfp_t gfp) 717cfed7e1bSPatrick McHardy { 718cfed7e1bSPatrick McHardy if (gcb != NULL) { 719cfed7e1bSPatrick McHardy if (gcb->head.cnt + 1 < ARRAY_SIZE(gcb->elems)) 720cfed7e1bSPatrick McHardy return gcb; 721cfed7e1bSPatrick McHardy nft_set_gc_batch_complete(gcb); 722cfed7e1bSPatrick McHardy } 723cfed7e1bSPatrick McHardy return nft_set_gc_batch_alloc(set, gfp); 724cfed7e1bSPatrick McHardy } 725cfed7e1bSPatrick McHardy 726cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_add(struct nft_set_gc_batch *gcb, 727cfed7e1bSPatrick McHardy void *elem) 728cfed7e1bSPatrick McHardy { 729cfed7e1bSPatrick McHardy gcb->elems[gcb->head.cnt++] = elem; 730cfed7e1bSPatrick McHardy } 731cfed7e1bSPatrick McHardy 732b8e20400SPablo Neira Ayuso struct nft_expr_ops; 733cfed7e1bSPatrick McHardy /** 734ef1f7df9SPatrick McHardy * struct nft_expr_type - nf_tables expression type 73596518518SPatrick McHardy * 736ef1f7df9SPatrick McHardy * @select_ops: function to select nft_expr_ops 737b8e20400SPablo Neira Ayuso * @release_ops: release nft_expr_ops 738ef1f7df9SPatrick McHardy * @ops: default ops, used when no select_ops functions is present 73996518518SPatrick McHardy * @list: used internally 74096518518SPatrick McHardy * @name: Identifier 74196518518SPatrick McHardy * @owner: module reference 74296518518SPatrick McHardy * @policy: netlink attribute policy 74396518518SPatrick McHardy * @maxattr: highest netlink attribute number 74464d46806SPatrick McHardy * @family: address family for AF-specific types 745151d799aSPatrick McHardy * @flags: expression type flags 746ef1f7df9SPatrick McHardy */ 747ef1f7df9SPatrick McHardy struct nft_expr_type { 7480ca743a5SPablo Neira Ayuso const struct nft_expr_ops *(*select_ops)(const struct nft_ctx *, 7490ca743a5SPablo Neira Ayuso const struct nlattr * const tb[]); 750b8e20400SPablo Neira Ayuso void (*release_ops)(const struct nft_expr_ops *ops); 751ef1f7df9SPatrick McHardy const struct nft_expr_ops *ops; 752ef1f7df9SPatrick McHardy struct list_head list; 753ef1f7df9SPatrick McHardy const char *name; 754ef1f7df9SPatrick McHardy struct module *owner; 755ef1f7df9SPatrick McHardy const struct nla_policy *policy; 756ef1f7df9SPatrick McHardy unsigned int maxattr; 75764d46806SPatrick McHardy u8 family; 758151d799aSPatrick McHardy u8 flags; 759ef1f7df9SPatrick McHardy }; 760ef1f7df9SPatrick McHardy 761151d799aSPatrick McHardy #define NFT_EXPR_STATEFUL 0x1 76279b174adSPablo Neira Ayuso #define NFT_EXPR_GC 0x2 763151d799aSPatrick McHardy 764f6ac8585SPablo Neira Ayuso enum nft_trans_phase { 765f6ac8585SPablo Neira Ayuso NFT_TRANS_PREPARE, 766f6ac8585SPablo Neira Ayuso NFT_TRANS_ABORT, 767f6ac8585SPablo Neira Ayuso NFT_TRANS_COMMIT, 768f6ac8585SPablo Neira Ayuso NFT_TRANS_RELEASE 769f6ac8585SPablo Neira Ayuso }; 770f6ac8585SPablo Neira Ayuso 771c9626a2cSPablo Neira Ayuso struct nft_flow_rule; 772c9626a2cSPablo Neira Ayuso struct nft_offload_ctx; 773c9626a2cSPablo Neira Ayuso 774ef1f7df9SPatrick McHardy /** 775ef1f7df9SPatrick McHardy * struct nft_expr_ops - nf_tables expression operations 776ef1f7df9SPatrick McHardy * 777ef1f7df9SPatrick McHardy * @eval: Expression evaluation function 77896518518SPatrick McHardy * @size: full expression size, including private data size 779ef1f7df9SPatrick McHardy * @init: initialization function 780cd5125d8SFlorian Westphal * @activate: activate expression in the next generation 781cd5125d8SFlorian Westphal * @deactivate: deactivate expression in next generation 782cd5125d8SFlorian Westphal * @destroy: destruction function, called after synchronize_rcu 783ef1f7df9SPatrick McHardy * @dump: function to dump parameters 784ef1f7df9SPatrick McHardy * @type: expression type 7850ca743a5SPablo Neira Ayuso * @validate: validate expression, called during loop detection 7860ca743a5SPablo Neira Ayuso * @data: extra data to attach to this expression operation 78796518518SPatrick McHardy */ 78896518518SPatrick McHardy struct nft_expr; 78996518518SPatrick McHardy struct nft_expr_ops { 79096518518SPatrick McHardy void (*eval)(const struct nft_expr *expr, 791a55e22e9SPatrick McHardy struct nft_regs *regs, 79296518518SPatrick McHardy const struct nft_pktinfo *pkt); 793086f3321SPablo Neira Ayuso int (*clone)(struct nft_expr *dst, 794086f3321SPablo Neira Ayuso const struct nft_expr *src); 795ef1f7df9SPatrick McHardy unsigned int size; 796ef1f7df9SPatrick McHardy 79796518518SPatrick McHardy int (*init)(const struct nft_ctx *ctx, 79896518518SPatrick McHardy const struct nft_expr *expr, 79996518518SPatrick McHardy const struct nlattr * const tb[]); 800bb7b40aeSPablo Neira Ayuso void (*activate)(const struct nft_ctx *ctx, 801bb7b40aeSPablo Neira Ayuso const struct nft_expr *expr); 802bb7b40aeSPablo Neira Ayuso void (*deactivate)(const struct nft_ctx *ctx, 803f6ac8585SPablo Neira Ayuso const struct nft_expr *expr, 804f6ac8585SPablo Neira Ayuso enum nft_trans_phase phase); 80562472bceSPatrick McHardy void (*destroy)(const struct nft_ctx *ctx, 80662472bceSPatrick McHardy const struct nft_expr *expr); 807371ebcbbSPablo Neira Ayuso void (*destroy_clone)(const struct nft_ctx *ctx, 808371ebcbbSPablo Neira Ayuso const struct nft_expr *expr); 80996518518SPatrick McHardy int (*dump)(struct sk_buff *skb, 81096518518SPatrick McHardy const struct nft_expr *expr); 8110ca743a5SPablo Neira Ayuso int (*validate)(const struct nft_ctx *ctx, 8120ca743a5SPablo Neira Ayuso const struct nft_expr *expr, 8130ca743a5SPablo Neira Ayuso const struct nft_data **data); 81479b174adSPablo Neira Ayuso bool (*gc)(struct net *net, 81579b174adSPablo Neira Ayuso const struct nft_expr *expr); 816c9626a2cSPablo Neira Ayuso int (*offload)(struct nft_offload_ctx *ctx, 817c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow, 818c9626a2cSPablo Neira Ayuso const struct nft_expr *expr); 819c9626a2cSPablo Neira Ayuso u32 offload_flags; 820ef1f7df9SPatrick McHardy const struct nft_expr_type *type; 8210ca743a5SPablo Neira Ayuso void *data; 82296518518SPatrick McHardy }; 82396518518SPatrick McHardy 824ef1f7df9SPatrick McHardy #define NFT_EXPR_MAXATTR 16 82596518518SPatrick McHardy #define NFT_EXPR_SIZE(size) (sizeof(struct nft_expr) + \ 82696518518SPatrick McHardy ALIGN(size, __alignof__(struct nft_expr))) 82796518518SPatrick McHardy 82896518518SPatrick McHardy /** 82996518518SPatrick McHardy * struct nft_expr - nf_tables expression 83096518518SPatrick McHardy * 83196518518SPatrick McHardy * @ops: expression ops 83296518518SPatrick McHardy * @data: expression private data 83396518518SPatrick McHardy */ 83496518518SPatrick McHardy struct nft_expr { 83596518518SPatrick McHardy const struct nft_expr_ops *ops; 836250367c5SLukas Wunner unsigned char data[] 837250367c5SLukas Wunner __attribute__((aligned(__alignof__(u64)))); 83896518518SPatrick McHardy }; 83996518518SPatrick McHardy 84096518518SPatrick McHardy static inline void *nft_expr_priv(const struct nft_expr *expr) 84196518518SPatrick McHardy { 84296518518SPatrick McHardy return (void *)expr->data; 84396518518SPatrick McHardy } 84496518518SPatrick McHardy 8450b2d8a7bSPatrick McHardy struct nft_expr *nft_expr_init(const struct nft_ctx *ctx, 8460b2d8a7bSPatrick McHardy const struct nlattr *nla); 8470b2d8a7bSPatrick McHardy void nft_expr_destroy(const struct nft_ctx *ctx, struct nft_expr *expr); 8480b2d8a7bSPatrick McHardy int nft_expr_dump(struct sk_buff *skb, unsigned int attr, 8490b2d8a7bSPatrick McHardy const struct nft_expr *expr); 8500b2d8a7bSPatrick McHardy 85196518518SPatrick McHardy /** 85296518518SPatrick McHardy * struct nft_rule - nf_tables rule 85396518518SPatrick McHardy * 85496518518SPatrick McHardy * @list: used internally 85596518518SPatrick McHardy * @handle: rule handle 8560628b123SPablo Neira Ayuso * @genmask: generation mask 85796518518SPatrick McHardy * @dlen: length of expression data 85886f1ec32SPatrick McHardy * @udata: user data is appended to the rule 85996518518SPatrick McHardy * @data: expression data 86096518518SPatrick McHardy */ 86196518518SPatrick McHardy struct nft_rule { 86296518518SPatrick McHardy struct list_head list; 8630768b3b3SPablo Neira Ayuso u64 handle:42, 8640628b123SPablo Neira Ayuso genmask:2, 8650768b3b3SPablo Neira Ayuso dlen:12, 86686f1ec32SPatrick McHardy udata:1; 86796518518SPatrick McHardy unsigned char data[] 86896518518SPatrick McHardy __attribute__((aligned(__alignof__(struct nft_expr)))); 86996518518SPatrick McHardy }; 87096518518SPatrick McHardy 87196518518SPatrick McHardy static inline struct nft_expr *nft_expr_first(const struct nft_rule *rule) 87296518518SPatrick McHardy { 87396518518SPatrick McHardy return (struct nft_expr *)&rule->data[0]; 87496518518SPatrick McHardy } 87596518518SPatrick McHardy 87696518518SPatrick McHardy static inline struct nft_expr *nft_expr_next(const struct nft_expr *expr) 87796518518SPatrick McHardy { 87896518518SPatrick McHardy return ((void *)expr) + expr->ops->size; 87996518518SPatrick McHardy } 88096518518SPatrick McHardy 88196518518SPatrick McHardy static inline struct nft_expr *nft_expr_last(const struct nft_rule *rule) 88296518518SPatrick McHardy { 88396518518SPatrick McHardy return (struct nft_expr *)&rule->data[rule->dlen]; 88496518518SPatrick McHardy } 88596518518SPatrick McHardy 88686f1ec32SPatrick McHardy static inline struct nft_userdata *nft_userdata(const struct nft_rule *rule) 8870768b3b3SPablo Neira Ayuso { 8880768b3b3SPablo Neira Ayuso return (void *)&rule->data[rule->dlen]; 8890768b3b3SPablo Neira Ayuso } 8900768b3b3SPablo Neira Ayuso 89196518518SPatrick McHardy /* 89296518518SPatrick McHardy * The last pointer isn't really necessary, but the compiler isn't able to 89396518518SPatrick McHardy * determine that the result of nft_expr_last() is always the same since it 89496518518SPatrick McHardy * can't assume that the dlen value wasn't changed within calls in the loop. 89596518518SPatrick McHardy */ 89696518518SPatrick McHardy #define nft_rule_for_each_expr(expr, last, rule) \ 89796518518SPatrick McHardy for ((expr) = nft_expr_first(rule), (last) = nft_expr_last(rule); \ 89896518518SPatrick McHardy (expr) != (last); \ 89996518518SPatrick McHardy (expr) = nft_expr_next(expr)) 90096518518SPatrick McHardy 90196518518SPatrick McHardy enum nft_chain_flags { 90296518518SPatrick McHardy NFT_BASE_CHAIN = 0x1, 903c9626a2cSPablo Neira Ayuso NFT_CHAIN_HW_OFFLOAD = 0x2, 90496518518SPatrick McHardy }; 90596518518SPatrick McHardy 906ad652f38SPablo Neira Ayuso #define NFT_CHAIN_POLICY_UNSET U8_MAX 907ad652f38SPablo Neira Ayuso 90896518518SPatrick McHardy /** 90996518518SPatrick McHardy * struct nft_chain - nf_tables chain 91096518518SPatrick McHardy * 91196518518SPatrick McHardy * @rules: list of rules in the chain 91296518518SPatrick McHardy * @list: used internally 9131b2470e5SFlorian Westphal * @rhlhead: used internally 914b5bc89bfSPablo Neira Ayuso * @table: table that this chain belongs to 91596518518SPatrick McHardy * @handle: chain handle 91696518518SPatrick McHardy * @use: number of jump references to this chain 917a0a7379eSPablo Neira Ayuso * @flags: bitmask of enum nft_chain_flags 91896518518SPatrick McHardy * @name: name of the chain 91996518518SPatrick McHardy */ 92096518518SPatrick McHardy struct nft_chain { 9210cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_0; 9220cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_1; 92396518518SPatrick McHardy struct list_head rules; 92496518518SPatrick McHardy struct list_head list; 9251b2470e5SFlorian Westphal struct rhlist_head rhlhead; 926b5bc89bfSPablo Neira Ayuso struct nft_table *table; 92796518518SPatrick McHardy u64 handle; 928a0a7379eSPablo Neira Ayuso u32 use; 929664b0f8cSPablo Neira Ayuso u8 flags:6, 930664b0f8cSPablo Neira Ayuso genmask:2; 931b7263e07SPhil Sutter char *name; 9320cbc06b3SFlorian Westphal 9330cbc06b3SFlorian Westphal /* Only used during control plane commit phase: */ 9340cbc06b3SFlorian Westphal struct nft_rule **rules_next; 93596518518SPatrick McHardy }; 93696518518SPatrick McHardy 937a654de8fSPablo Neira Ayuso int nft_chain_validate(const struct nft_ctx *ctx, const struct nft_chain *chain); 938a654de8fSPablo Neira Ayuso 93932537e91SPablo Neira Ayuso enum nft_chain_types { 9409370761cSPablo Neira Ayuso NFT_CHAIN_T_DEFAULT = 0, 9419370761cSPablo Neira Ayuso NFT_CHAIN_T_ROUTE, 9429370761cSPablo Neira Ayuso NFT_CHAIN_T_NAT, 9439370761cSPablo Neira Ayuso NFT_CHAIN_T_MAX 9449370761cSPablo Neira Ayuso }; 9459370761cSPablo Neira Ayuso 9461a1e1a12SPatrick McHardy /** 94732537e91SPablo Neira Ayuso * struct nft_chain_type - nf_tables chain type info 9481a1e1a12SPatrick McHardy * 9491a1e1a12SPatrick McHardy * @name: name of the type 9501a1e1a12SPatrick McHardy * @type: numeric identifier 9511a1e1a12SPatrick McHardy * @family: address family 9521a1e1a12SPatrick McHardy * @owner: module owner 9531a1e1a12SPatrick McHardy * @hook_mask: mask of valid hooks 954c2f9eafeSPablo Neira Ayuso * @hooks: array of hook functions 9554e25ceb8SFlorian Westphal * @ops_register: base chain register function 9564e25ceb8SFlorian Westphal * @ops_unregister: base chain unregister function 9571a1e1a12SPatrick McHardy */ 95832537e91SPablo Neira Ayuso struct nft_chain_type { 9591a1e1a12SPatrick McHardy const char *name; 96032537e91SPablo Neira Ayuso enum nft_chain_types type; 9611a1e1a12SPatrick McHardy int family; 9621a1e1a12SPatrick McHardy struct module *owner; 9631a1e1a12SPatrick McHardy unsigned int hook_mask; 9641a1e1a12SPatrick McHardy nf_hookfn *hooks[NF_MAX_HOOKS]; 9654e25ceb8SFlorian Westphal int (*ops_register)(struct net *net, const struct nf_hook_ops *ops); 9664e25ceb8SFlorian Westphal void (*ops_unregister)(struct net *net, const struct nf_hook_ops *ops); 9671a1e1a12SPatrick McHardy }; 9681a1e1a12SPatrick McHardy 9697210e4e3SPablo Neira Ayuso int nft_chain_validate_dependency(const struct nft_chain *chain, 97032537e91SPablo Neira Ayuso enum nft_chain_types type); 97175e8d06dSPablo Neira Ayuso int nft_chain_validate_hooks(const struct nft_chain *chain, 97275e8d06dSPablo Neira Ayuso unsigned int hook_flags); 9737210e4e3SPablo Neira Ayuso 9740ca743a5SPablo Neira Ayuso struct nft_stats { 9750ca743a5SPablo Neira Ayuso u64 bytes; 9760ca743a5SPablo Neira Ayuso u64 pkts; 977ce355e20SEric Dumazet struct u64_stats_sync syncp; 9780ca743a5SPablo Neira Ayuso }; 9790ca743a5SPablo Neira Ayuso 9803f0465a9SPablo Neira Ayuso struct nft_hook { 9813f0465a9SPablo Neira Ayuso struct list_head list; 9823f0465a9SPablo Neira Ayuso struct nf_hook_ops ops; 9833f0465a9SPablo Neira Ayuso struct rcu_head rcu; 9843f0465a9SPablo Neira Ayuso }; 9853f0465a9SPablo Neira Ayuso 98696518518SPatrick McHardy /** 98796518518SPatrick McHardy * struct nft_base_chain - nf_tables base chain 98896518518SPatrick McHardy * 98996518518SPatrick McHardy * @ops: netfilter hook ops 990d54725cdSPablo Neira Ayuso * @hook_list: list of netfilter hooks (for NFPROTO_NETDEV family) 9919370761cSPablo Neira Ayuso * @type: chain type 9920ca743a5SPablo Neira Ayuso * @policy: default policy 9930ca743a5SPablo Neira Ayuso * @stats: per-cpu chain stats 99496518518SPatrick McHardy * @chain: the chain 99514bfb13fSPablo Neira Ayuso * @flow_block: flow block (for hardware offload) 99696518518SPatrick McHardy */ 99796518518SPatrick McHardy struct nft_base_chain { 998c974a3a3SPablo Neira Ayuso struct nf_hook_ops ops; 999d54725cdSPablo Neira Ayuso struct list_head hook_list; 100032537e91SPablo Neira Ayuso const struct nft_chain_type *type; 10010ca743a5SPablo Neira Ayuso u8 policy; 1002835b8033SPablo Neira Ayuso u8 flags; 10030ca743a5SPablo Neira Ayuso struct nft_stats __percpu *stats; 100496518518SPatrick McHardy struct nft_chain chain; 100514bfb13fSPablo Neira Ayuso struct flow_block flow_block; 100696518518SPatrick McHardy }; 100796518518SPatrick McHardy 100896518518SPatrick McHardy static inline struct nft_base_chain *nft_base_chain(const struct nft_chain *chain) 100996518518SPatrick McHardy { 101096518518SPatrick McHardy return container_of(chain, struct nft_base_chain, chain); 101196518518SPatrick McHardy } 101296518518SPatrick McHardy 1013f323d954SPablo Neira Ayuso static inline bool nft_is_base_chain(const struct nft_chain *chain) 1014f323d954SPablo Neira Ayuso { 1015f323d954SPablo Neira Ayuso return chain->flags & NFT_BASE_CHAIN; 1016f323d954SPablo Neira Ayuso } 1017f323d954SPablo Neira Ayuso 10185ebe0b0eSPablo Neira Ayuso int __nft_release_basechain(struct nft_ctx *ctx); 1019835b8033SPablo Neira Ayuso 102006198b34SEric W. Biederman unsigned int nft_do_chain(struct nft_pktinfo *pkt, void *priv); 102196518518SPatrick McHardy 102296518518SPatrick McHardy /** 102396518518SPatrick McHardy * struct nft_table - nf_tables table 102496518518SPatrick McHardy * 102596518518SPatrick McHardy * @list: used internally 10261b2470e5SFlorian Westphal * @chains_ht: chains in the table 10271b2470e5SFlorian Westphal * @chains: same, for stable walks 102896518518SPatrick McHardy * @sets: sets in the table 1029e5009240SPablo Neira Ayuso * @objects: stateful objects in the table 10303b49e2e9SPablo Neira Ayuso * @flowtables: flow tables in the table 103196518518SPatrick McHardy * @hgenerator: handle generator state 10323ecbfd65SHarsha Sharma * @handle: table handle 103396518518SPatrick McHardy * @use: number of chain references to this table 103496518518SPatrick McHardy * @flags: table flag (see enum nft_table_flags) 1035f2a6d766SPablo Neira Ayuso * @genmask: generation mask 103636596dadSPablo Neira Ayuso * @afinfo: address family info 103796518518SPatrick McHardy * @name: name of the table 103896518518SPatrick McHardy */ 103996518518SPatrick McHardy struct nft_table { 104096518518SPatrick McHardy struct list_head list; 10411b2470e5SFlorian Westphal struct rhltable chains_ht; 104296518518SPatrick McHardy struct list_head chains; 104396518518SPatrick McHardy struct list_head sets; 1044e5009240SPablo Neira Ayuso struct list_head objects; 10453b49e2e9SPablo Neira Ayuso struct list_head flowtables; 104696518518SPatrick McHardy u64 hgenerator; 10473ecbfd65SHarsha Sharma u64 handle; 104896518518SPatrick McHardy u32 use; 104998319cb9SPablo Neira Ayuso u16 family:6, 105098319cb9SPablo Neira Ayuso flags:8, 1051f2a6d766SPablo Neira Ayuso genmask:2; 1052e46abbccSPhil Sutter char *name; 1053ebddf1a8SPablo Neira Ayuso }; 1054ebddf1a8SPablo Neira Ayuso 1055cc07eeb0SPablo Neira Ayuso void nft_register_chain_type(const struct nft_chain_type *); 105632537e91SPablo Neira Ayuso void nft_unregister_chain_type(const struct nft_chain_type *); 105796518518SPatrick McHardy 10585eccdfaaSJoe Perches int nft_register_expr(struct nft_expr_type *); 10595eccdfaaSJoe Perches void nft_unregister_expr(struct nft_expr_type *); 106096518518SPatrick McHardy 106133d5a7b1SFlorian Westphal int nft_verdict_dump(struct sk_buff *skb, int type, 106233d5a7b1SFlorian Westphal const struct nft_verdict *v); 106333d5a7b1SFlorian Westphal 106433d5a7b1SFlorian Westphal /** 1065d152159bSFlorian Westphal * struct nft_object_hash_key - key to lookup nft_object 1066d152159bSFlorian Westphal * 1067d152159bSFlorian Westphal * @name: name of the stateful object to look up 1068d152159bSFlorian Westphal * @table: table the object belongs to 1069d152159bSFlorian Westphal */ 1070d152159bSFlorian Westphal struct nft_object_hash_key { 1071d152159bSFlorian Westphal const char *name; 1072d152159bSFlorian Westphal const struct nft_table *table; 1073d152159bSFlorian Westphal }; 1074d152159bSFlorian Westphal 1075d152159bSFlorian Westphal /** 1076e5009240SPablo Neira Ayuso * struct nft_object - nf_tables stateful object 1077e5009240SPablo Neira Ayuso * 1078e5009240SPablo Neira Ayuso * @list: table stateful object list node 1079d152159bSFlorian Westphal * @key: keys that identify this object 10804d44175aSFlorian Westphal * @rhlhead: nft_objname_ht node 1081e5009240SPablo Neira Ayuso * @genmask: generation mask 1082e5009240SPablo Neira Ayuso * @use: number of references to this stateful object 10833ecbfd65SHarsha Sharma * @handle: unique object handle 1084dfc46034SPablo M. Bermudo Garay * @ops: object operations 10853ecbfd65SHarsha Sharma * @data: object data, layout depends on type 1086e5009240SPablo Neira Ayuso */ 1087e5009240SPablo Neira Ayuso struct nft_object { 1088e5009240SPablo Neira Ayuso struct list_head list; 10894d44175aSFlorian Westphal struct rhlist_head rhlhead; 1090d152159bSFlorian Westphal struct nft_object_hash_key key; 1091e5009240SPablo Neira Ayuso u32 genmask:2, 1092e5009240SPablo Neira Ayuso use:30; 10933ecbfd65SHarsha Sharma u64 handle; 1094e5009240SPablo Neira Ayuso /* runtime data below here */ 1095dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops ____cacheline_aligned; 1096e5009240SPablo Neira Ayuso unsigned char data[] 1097e5009240SPablo Neira Ayuso __attribute__((aligned(__alignof__(u64)))); 1098e5009240SPablo Neira Ayuso }; 1099e5009240SPablo Neira Ayuso 1100e5009240SPablo Neira Ayuso static inline void *nft_obj_data(const struct nft_object *obj) 1101e5009240SPablo Neira Ayuso { 1102e5009240SPablo Neira Ayuso return (void *)obj->data; 1103e5009240SPablo Neira Ayuso } 1104e5009240SPablo Neira Ayuso 1105e5009240SPablo Neira Ayuso #define nft_expr_obj(expr) *((struct nft_object **)nft_expr_priv(expr)) 1106e5009240SPablo Neira Ayuso 11074d44175aSFlorian Westphal struct nft_object *nft_obj_lookup(const struct net *net, 11084d44175aSFlorian Westphal const struct nft_table *table, 1109e5009240SPablo Neira Ayuso const struct nlattr *nla, u32 objtype, 1110e5009240SPablo Neira Ayuso u8 genmask); 1111e5009240SPablo Neira Ayuso 1112d152159bSFlorian Westphal void nft_obj_notify(struct net *net, const struct nft_table *table, 11132599e989SPablo Neira Ayuso struct nft_object *obj, u32 portid, u32 seq, 11142599e989SPablo Neira Ayuso int event, int family, int report, gfp_t gfp); 11152599e989SPablo Neira Ayuso 1116e5009240SPablo Neira Ayuso /** 1117e5009240SPablo Neira Ayuso * struct nft_object_type - stateful object type 1118e5009240SPablo Neira Ayuso * 1119dfc46034SPablo M. Bermudo Garay * @select_ops: function to select nft_object_ops 1120dfc46034SPablo M. Bermudo Garay * @ops: default ops, used when no select_ops functions is present 1121e5009240SPablo Neira Ayuso * @list: list node in list of object types 1122e5009240SPablo Neira Ayuso * @type: stateful object numeric type 1123e5009240SPablo Neira Ayuso * @owner: module owner 1124e5009240SPablo Neira Ayuso * @maxattr: maximum netlink attribute 1125e5009240SPablo Neira Ayuso * @policy: netlink attribute policy 1126dfc46034SPablo M. Bermudo Garay */ 1127dfc46034SPablo M. Bermudo Garay struct nft_object_type { 1128dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *(*select_ops)(const struct nft_ctx *, 1129dfc46034SPablo M. Bermudo Garay const struct nlattr * const tb[]); 1130dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops; 1131dfc46034SPablo M. Bermudo Garay struct list_head list; 1132dfc46034SPablo M. Bermudo Garay u32 type; 1133dfc46034SPablo M. Bermudo Garay unsigned int maxattr; 1134dfc46034SPablo M. Bermudo Garay struct module *owner; 1135dfc46034SPablo M. Bermudo Garay const struct nla_policy *policy; 1136dfc46034SPablo M. Bermudo Garay }; 1137dfc46034SPablo M. Bermudo Garay 1138dfc46034SPablo M. Bermudo Garay /** 1139dfc46034SPablo M. Bermudo Garay * struct nft_object_ops - stateful object operations 1140dfc46034SPablo M. Bermudo Garay * 1141dfc46034SPablo M. Bermudo Garay * @eval: stateful object evaluation function 1142dfc46034SPablo M. Bermudo Garay * @size: stateful object size 1143e5009240SPablo Neira Ayuso * @init: initialize object from netlink attributes 1144e5009240SPablo Neira Ayuso * @destroy: release existing stateful object 1145e5009240SPablo Neira Ayuso * @dump: netlink dump stateful object 1146d62d0ba9SFernando Fernandez Mancera * @update: update stateful object 1147e5009240SPablo Neira Ayuso */ 1148dfc46034SPablo M. Bermudo Garay struct nft_object_ops { 1149e5009240SPablo Neira Ayuso void (*eval)(struct nft_object *obj, 1150e5009240SPablo Neira Ayuso struct nft_regs *regs, 1151e5009240SPablo Neira Ayuso const struct nft_pktinfo *pkt); 1152e5009240SPablo Neira Ayuso unsigned int size; 115384fba055SFlorian Westphal int (*init)(const struct nft_ctx *ctx, 115484fba055SFlorian Westphal const struct nlattr *const tb[], 1155e5009240SPablo Neira Ayuso struct nft_object *obj); 115600bfb320SPablo Neira Ayuso void (*destroy)(const struct nft_ctx *ctx, 115700bfb320SPablo Neira Ayuso struct nft_object *obj); 1158e5009240SPablo Neira Ayuso int (*dump)(struct sk_buff *skb, 115943da04a5SPablo Neira Ayuso struct nft_object *obj, 116043da04a5SPablo Neira Ayuso bool reset); 1161d62d0ba9SFernando Fernandez Mancera void (*update)(struct nft_object *obj, 1162d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj); 1163dfc46034SPablo M. Bermudo Garay const struct nft_object_type *type; 1164e5009240SPablo Neira Ayuso }; 1165e5009240SPablo Neira Ayuso 1166e5009240SPablo Neira Ayuso int nft_register_obj(struct nft_object_type *obj_type); 1167e5009240SPablo Neira Ayuso void nft_unregister_obj(struct nft_object_type *obj_type); 1168e5009240SPablo Neira Ayuso 1169cb662ac6SPablo Neira Ayuso #define NFT_NETDEVICE_MAX 256 1170d92191aaSPablo Neira Ayuso 1171e5009240SPablo Neira Ayuso /** 11723b49e2e9SPablo Neira Ayuso * struct nft_flowtable - nf_tables flow table 11733b49e2e9SPablo Neira Ayuso * 11743b49e2e9SPablo Neira Ayuso * @list: flow table list node in table list 11753b49e2e9SPablo Neira Ayuso * @table: the table the flow table is contained in 11763b49e2e9SPablo Neira Ayuso * @name: name of this flow table 11773b49e2e9SPablo Neira Ayuso * @hooknum: hook number 11783b49e2e9SPablo Neira Ayuso * @ops_len: number of hooks in array 11793b49e2e9SPablo Neira Ayuso * @genmask: generation mask 11803b49e2e9SPablo Neira Ayuso * @use: number of references to this flow table 11813ecbfd65SHarsha Sharma * @handle: unique object handle 1182d92191aaSPablo Neira Ayuso * @dev_name: array of device names 11833b49e2e9SPablo Neira Ayuso * @data: rhashtable and garbage collector 11843b49e2e9SPablo Neira Ayuso * @ops: array of hooks 11853b49e2e9SPablo Neira Ayuso */ 11863b49e2e9SPablo Neira Ayuso struct nft_flowtable { 11873b49e2e9SPablo Neira Ayuso struct list_head list; 11883b49e2e9SPablo Neira Ayuso struct nft_table *table; 11893b49e2e9SPablo Neira Ayuso char *name; 11903b49e2e9SPablo Neira Ayuso int hooknum; 11913b49e2e9SPablo Neira Ayuso int ops_len; 11923b49e2e9SPablo Neira Ayuso u32 genmask:2, 11933b49e2e9SPablo Neira Ayuso use:30; 11943ecbfd65SHarsha Sharma u64 handle; 11953b49e2e9SPablo Neira Ayuso /* runtime data below here */ 11963f0465a9SPablo Neira Ayuso struct list_head hook_list ____cacheline_aligned; 11973b49e2e9SPablo Neira Ayuso struct nf_flowtable data; 11983b49e2e9SPablo Neira Ayuso }; 11993b49e2e9SPablo Neira Ayuso 1200cac20fcdSPablo Neira Ayuso struct nft_flowtable *nft_flowtable_lookup(const struct nft_table *table, 12013b49e2e9SPablo Neira Ayuso const struct nlattr *nla, 12023b49e2e9SPablo Neira Ayuso u8 genmask); 12033b49e2e9SPablo Neira Ayuso 12049b05b6e1SLaura Garcia Liebana void nf_tables_deactivate_flowtable(const struct nft_ctx *ctx, 12059b05b6e1SLaura Garcia Liebana struct nft_flowtable *flowtable, 12069b05b6e1SLaura Garcia Liebana enum nft_trans_phase phase); 12079b05b6e1SLaura Garcia Liebana 12083b49e2e9SPablo Neira Ayuso void nft_register_flowtable_type(struct nf_flowtable_type *type); 12093b49e2e9SPablo Neira Ayuso void nft_unregister_flowtable_type(struct nf_flowtable_type *type); 12103b49e2e9SPablo Neira Ayuso 12113b49e2e9SPablo Neira Ayuso /** 121233d5a7b1SFlorian Westphal * struct nft_traceinfo - nft tracing information and state 121333d5a7b1SFlorian Westphal * 121433d5a7b1SFlorian Westphal * @pkt: pktinfo currently processed 121533d5a7b1SFlorian Westphal * @basechain: base chain currently processed 121633d5a7b1SFlorian Westphal * @chain: chain currently processed 121733d5a7b1SFlorian Westphal * @rule: rule that was evaluated 121833d5a7b1SFlorian Westphal * @verdict: verdict given by rule 121933d5a7b1SFlorian Westphal * @type: event type (enum nft_trace_types) 122033d5a7b1SFlorian Westphal * @packet_dumped: packet headers sent in a previous traceinfo message 122133d5a7b1SFlorian Westphal * @trace: other struct members are initialised 122233d5a7b1SFlorian Westphal */ 122333d5a7b1SFlorian Westphal struct nft_traceinfo { 122433d5a7b1SFlorian Westphal const struct nft_pktinfo *pkt; 122533d5a7b1SFlorian Westphal const struct nft_base_chain *basechain; 122633d5a7b1SFlorian Westphal const struct nft_chain *chain; 122733d5a7b1SFlorian Westphal const struct nft_rule *rule; 122833d5a7b1SFlorian Westphal const struct nft_verdict *verdict; 122933d5a7b1SFlorian Westphal enum nft_trace_types type; 123033d5a7b1SFlorian Westphal bool packet_dumped; 123133d5a7b1SFlorian Westphal bool trace; 123233d5a7b1SFlorian Westphal }; 123333d5a7b1SFlorian Westphal 123433d5a7b1SFlorian Westphal void nft_trace_init(struct nft_traceinfo *info, const struct nft_pktinfo *pkt, 123533d5a7b1SFlorian Westphal const struct nft_verdict *verdict, 123633d5a7b1SFlorian Westphal const struct nft_chain *basechain); 123733d5a7b1SFlorian Westphal 123833d5a7b1SFlorian Westphal void nft_trace_notify(struct nft_traceinfo *info); 123933d5a7b1SFlorian Westphal 12409370761cSPablo Neira Ayuso #define MODULE_ALIAS_NFT_CHAIN(family, name) \ 12419370761cSPablo Neira Ayuso MODULE_ALIAS("nft-chain-" __stringify(family) "-" name) 124296518518SPatrick McHardy 124364d46806SPatrick McHardy #define MODULE_ALIAS_NFT_AF_EXPR(family, name) \ 124464d46806SPatrick McHardy MODULE_ALIAS("nft-expr-" __stringify(family) "-" name) 124564d46806SPatrick McHardy 124696518518SPatrick McHardy #define MODULE_ALIAS_NFT_EXPR(name) \ 124796518518SPatrick McHardy MODULE_ALIAS("nft-expr-" name) 124896518518SPatrick McHardy 1249e5009240SPablo Neira Ayuso #define MODULE_ALIAS_NFT_OBJ(type) \ 1250e5009240SPablo Neira Ayuso MODULE_ALIAS("nft-obj-" __stringify(type)) 1251e5009240SPablo Neira Ayuso 125247e640afSJeremy Sowden #if IS_ENABLED(CONFIG_NF_TABLES) 125347e640afSJeremy Sowden 1254ea4bd995SPatrick McHardy /* 1255ea4bd995SPatrick McHardy * The gencursor defines two generations, the currently active and the 1256ea4bd995SPatrick McHardy * next one. Objects contain a bitmask of 2 bits specifying the generations 1257ea4bd995SPatrick McHardy * they're active in. A set bit means they're inactive in the generation 1258ea4bd995SPatrick McHardy * represented by that bit. 1259ea4bd995SPatrick McHardy * 1260ea4bd995SPatrick McHardy * New objects start out as inactive in the current and active in the 1261ea4bd995SPatrick McHardy * next generation. When committing the ruleset the bitmask is cleared, 1262ea4bd995SPatrick McHardy * meaning they're active in all generations. When removing an object, 1263ea4bd995SPatrick McHardy * it is set inactive in the next generation. After committing the ruleset, 1264ea4bd995SPatrick McHardy * the objects are removed. 1265ea4bd995SPatrick McHardy */ 1266ea4bd995SPatrick McHardy static inline unsigned int nft_gencursor_next(const struct net *net) 1267ea4bd995SPatrick McHardy { 1268ea4bd995SPatrick McHardy return net->nft.gencursor + 1 == 1 ? 1 : 0; 1269ea4bd995SPatrick McHardy } 1270ea4bd995SPatrick McHardy 1271ea4bd995SPatrick McHardy static inline u8 nft_genmask_next(const struct net *net) 1272ea4bd995SPatrick McHardy { 1273ea4bd995SPatrick McHardy return 1 << nft_gencursor_next(net); 1274ea4bd995SPatrick McHardy } 1275ea4bd995SPatrick McHardy 1276ea4bd995SPatrick McHardy static inline u8 nft_genmask_cur(const struct net *net) 1277ea4bd995SPatrick McHardy { 127814cd5d4aSMark Rutland /* Use READ_ONCE() to prevent refetching the value for atomicity */ 127914cd5d4aSMark Rutland return 1 << READ_ONCE(net->nft.gencursor); 1280ea4bd995SPatrick McHardy } 1281ea4bd995SPatrick McHardy 128222fe54d5SPatrick McHardy #define NFT_GENMASK_ANY ((1 << 0) | (1 << 1)) 128322fe54d5SPatrick McHardy 1284cc02e457SPatrick McHardy /* 1285889f7ee7SPablo Neira Ayuso * Generic transaction helpers 1286889f7ee7SPablo Neira Ayuso */ 1287889f7ee7SPablo Neira Ayuso 1288889f7ee7SPablo Neira Ayuso /* Check if this object is currently active. */ 1289889f7ee7SPablo Neira Ayuso #define nft_is_active(__net, __obj) \ 1290889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_cur(__net)) == 0) 1291889f7ee7SPablo Neira Ayuso 1292889f7ee7SPablo Neira Ayuso /* Check if this object is active in the next generation. */ 1293889f7ee7SPablo Neira Ayuso #define nft_is_active_next(__net, __obj) \ 1294889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_next(__net)) == 0) 1295889f7ee7SPablo Neira Ayuso 1296889f7ee7SPablo Neira Ayuso /* This object becomes active in the next generation. */ 1297889f7ee7SPablo Neira Ayuso #define nft_activate_next(__net, __obj) \ 1298889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_cur(__net) 1299889f7ee7SPablo Neira Ayuso 1300889f7ee7SPablo Neira Ayuso /* This object becomes inactive in the next generation. */ 1301889f7ee7SPablo Neira Ayuso #define nft_deactivate_next(__net, __obj) \ 1302889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_next(__net) 1303889f7ee7SPablo Neira Ayuso 1304889f7ee7SPablo Neira Ayuso /* After committing the ruleset, clear the stale generation bit. */ 1305889f7ee7SPablo Neira Ayuso #define nft_clear(__net, __obj) \ 1306889f7ee7SPablo Neira Ayuso (__obj)->genmask &= ~nft_genmask_next(__net) 1307f2a6d766SPablo Neira Ayuso #define nft_active_genmask(__obj, __genmask) \ 1308f2a6d766SPablo Neira Ayuso !((__obj)->genmask & __genmask) 1309889f7ee7SPablo Neira Ayuso 1310889f7ee7SPablo Neira Ayuso /* 1311cc02e457SPatrick McHardy * Set element transaction helpers 1312cc02e457SPatrick McHardy */ 1313cc02e457SPatrick McHardy 1314cc02e457SPatrick McHardy static inline bool nft_set_elem_active(const struct nft_set_ext *ext, 1315cc02e457SPatrick McHardy u8 genmask) 1316cc02e457SPatrick McHardy { 1317cc02e457SPatrick McHardy return !(ext->genmask & genmask); 1318cc02e457SPatrick McHardy } 1319cc02e457SPatrick McHardy 132042a55769SPablo Neira Ayuso static inline void nft_set_elem_change_active(const struct net *net, 132142a55769SPablo Neira Ayuso const struct nft_set *set, 1322cc02e457SPatrick McHardy struct nft_set_ext *ext) 1323cc02e457SPatrick McHardy { 132442a55769SPablo Neira Ayuso ext->genmask ^= nft_genmask_next(net); 1325cc02e457SPatrick McHardy } 1326cc02e457SPatrick McHardy 132747e640afSJeremy Sowden #endif /* IS_ENABLED(CONFIG_NF_TABLES) */ 132847e640afSJeremy Sowden 132969086658SPatrick McHardy /* 133069086658SPatrick McHardy * We use a free bit in the genmask field to indicate the element 133169086658SPatrick McHardy * is busy, meaning it is currently being processed either by 133269086658SPatrick McHardy * the netlink API or GC. 133369086658SPatrick McHardy * 133469086658SPatrick McHardy * Even though the genmask is only a single byte wide, this works 133569086658SPatrick McHardy * because the extension structure if fully constant once initialized, 133669086658SPatrick McHardy * so there are no non-atomic write accesses unless it is already 133769086658SPatrick McHardy * marked busy. 133869086658SPatrick McHardy */ 133969086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_MASK (1 << 2) 134069086658SPatrick McHardy 134169086658SPatrick McHardy #if defined(__LITTLE_ENDIAN_BITFIELD) 134269086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT 2 134369086658SPatrick McHardy #elif defined(__BIG_ENDIAN_BITFIELD) 134469086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT (BITS_PER_LONG - BITS_PER_BYTE + 2) 134569086658SPatrick McHardy #else 134669086658SPatrick McHardy #error 134769086658SPatrick McHardy #endif 134869086658SPatrick McHardy 134969086658SPatrick McHardy static inline int nft_set_elem_mark_busy(struct nft_set_ext *ext) 135069086658SPatrick McHardy { 135169086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 135269086658SPatrick McHardy 135369086658SPatrick McHardy BUILD_BUG_ON(offsetof(struct nft_set_ext, genmask) != 0); 135469086658SPatrick McHardy return test_and_set_bit(NFT_SET_ELEM_BUSY_BIT, word); 135569086658SPatrick McHardy } 135669086658SPatrick McHardy 135769086658SPatrick McHardy static inline void nft_set_elem_clear_busy(struct nft_set_ext *ext) 135869086658SPatrick McHardy { 135969086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 136069086658SPatrick McHardy 136169086658SPatrick McHardy clear_bit(NFT_SET_ELEM_BUSY_BIT, word); 136269086658SPatrick McHardy } 136369086658SPatrick McHardy 13641a1e1a12SPatrick McHardy /** 13651a1e1a12SPatrick McHardy * struct nft_trans - nf_tables object update in transaction 13661a1e1a12SPatrick McHardy * 13671a1e1a12SPatrick McHardy * @list: used internally 13681a1e1a12SPatrick McHardy * @msg_type: message type 13690935d558SFlorian Westphal * @put_net: ctx->net needs to be put 13701a1e1a12SPatrick McHardy * @ctx: transaction context 13711a1e1a12SPatrick McHardy * @data: internal information related to the transaction 13721a1e1a12SPatrick McHardy */ 13731a1e1a12SPatrick McHardy struct nft_trans { 13741a1e1a12SPatrick McHardy struct list_head list; 13751a1e1a12SPatrick McHardy int msg_type; 13760935d558SFlorian Westphal bool put_net; 13771a1e1a12SPatrick McHardy struct nft_ctx ctx; 13786daf1414SGustavo A. R. Silva char data[]; 13791a1e1a12SPatrick McHardy }; 13801a1e1a12SPatrick McHardy 13811a1e1a12SPatrick McHardy struct nft_trans_rule { 13821a1e1a12SPatrick McHardy struct nft_rule *rule; 1383c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow; 13841a94e38dSPablo Neira Ayuso u32 rule_id; 13851a1e1a12SPatrick McHardy }; 13861a1e1a12SPatrick McHardy 13871a1e1a12SPatrick McHardy #define nft_trans_rule(trans) \ 13881a1e1a12SPatrick McHardy (((struct nft_trans_rule *)trans->data)->rule) 1389c9626a2cSPablo Neira Ayuso #define nft_trans_flow_rule(trans) \ 1390c9626a2cSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->flow) 13911a94e38dSPablo Neira Ayuso #define nft_trans_rule_id(trans) \ 13921a94e38dSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->rule_id) 13931a1e1a12SPatrick McHardy 13941a1e1a12SPatrick McHardy struct nft_trans_set { 13951a1e1a12SPatrick McHardy struct nft_set *set; 13961a1e1a12SPatrick McHardy u32 set_id; 13976a0a8d10SPablo Neira Ayuso bool bound; 13981a1e1a12SPatrick McHardy }; 13991a1e1a12SPatrick McHardy 14001a1e1a12SPatrick McHardy #define nft_trans_set(trans) \ 14011a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set) 14021a1e1a12SPatrick McHardy #define nft_trans_set_id(trans) \ 14031a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set_id) 14046a0a8d10SPablo Neira Ayuso #define nft_trans_set_bound(trans) \ 14056a0a8d10SPablo Neira Ayuso (((struct nft_trans_set *)trans->data)->bound) 14061a1e1a12SPatrick McHardy 14071a1e1a12SPatrick McHardy struct nft_trans_chain { 14081a1e1a12SPatrick McHardy bool update; 1409b7263e07SPhil Sutter char *name; 14101a1e1a12SPatrick McHardy struct nft_stats __percpu *stats; 14111a1e1a12SPatrick McHardy u8 policy; 14121a1e1a12SPatrick McHardy }; 14131a1e1a12SPatrick McHardy 14141a1e1a12SPatrick McHardy #define nft_trans_chain_update(trans) \ 14151a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->update) 14161a1e1a12SPatrick McHardy #define nft_trans_chain_name(trans) \ 14171a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->name) 14181a1e1a12SPatrick McHardy #define nft_trans_chain_stats(trans) \ 14191a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->stats) 14201a1e1a12SPatrick McHardy #define nft_trans_chain_policy(trans) \ 14211a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->policy) 14221a1e1a12SPatrick McHardy 14231a1e1a12SPatrick McHardy struct nft_trans_table { 14241a1e1a12SPatrick McHardy bool update; 14251a1e1a12SPatrick McHardy bool enable; 14261a1e1a12SPatrick McHardy }; 14271a1e1a12SPatrick McHardy 14281a1e1a12SPatrick McHardy #define nft_trans_table_update(trans) \ 14291a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->update) 14301a1e1a12SPatrick McHardy #define nft_trans_table_enable(trans) \ 14311a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->enable) 14321a1e1a12SPatrick McHardy 14331a1e1a12SPatrick McHardy struct nft_trans_elem { 14341a1e1a12SPatrick McHardy struct nft_set *set; 14351a1e1a12SPatrick McHardy struct nft_set_elem elem; 14366a0a8d10SPablo Neira Ayuso bool bound; 14371a1e1a12SPatrick McHardy }; 14381a1e1a12SPatrick McHardy 14391a1e1a12SPatrick McHardy #define nft_trans_elem_set(trans) \ 14401a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->set) 14411a1e1a12SPatrick McHardy #define nft_trans_elem(trans) \ 14421a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->elem) 14436a0a8d10SPablo Neira Ayuso #define nft_trans_elem_set_bound(trans) \ 14446a0a8d10SPablo Neira Ayuso (((struct nft_trans_elem *)trans->data)->bound) 14451a1e1a12SPatrick McHardy 1446e5009240SPablo Neira Ayuso struct nft_trans_obj { 1447e5009240SPablo Neira Ayuso struct nft_object *obj; 1448d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj; 1449d62d0ba9SFernando Fernandez Mancera bool update; 1450e5009240SPablo Neira Ayuso }; 1451e5009240SPablo Neira Ayuso 1452e5009240SPablo Neira Ayuso #define nft_trans_obj(trans) \ 1453e5009240SPablo Neira Ayuso (((struct nft_trans_obj *)trans->data)->obj) 1454d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_newobj(trans) \ 1455d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->newobj) 1456d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_update(trans) \ 1457d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->update) 1458e5009240SPablo Neira Ayuso 14593b49e2e9SPablo Neira Ayuso struct nft_trans_flowtable { 14603b49e2e9SPablo Neira Ayuso struct nft_flowtable *flowtable; 14613b49e2e9SPablo Neira Ayuso }; 14623b49e2e9SPablo Neira Ayuso 14633b49e2e9SPablo Neira Ayuso #define nft_trans_flowtable(trans) \ 14643b49e2e9SPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->flowtable) 14653b49e2e9SPablo Neira Ayuso 146602c7b25eSPablo Neira Ayuso int __init nft_chain_filter_init(void); 1467d209df3eSFlorian Westphal void nft_chain_filter_fini(void); 146802c7b25eSPablo Neira Ayuso 1469c1deb065SFlorian Westphal void __init nft_chain_route_init(void); 1470c1deb065SFlorian Westphal void nft_chain_route_fini(void); 147196518518SPatrick McHardy #endif /* _NET_NF_TABLES_H */ 1472