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 { 1461e105e6aSFlorian Westphal if (len % NFT_REG32_SIZE) 1471e105e6aSFlorian Westphal dst[len / NFT_REG32_SIZE] = 0; 14849499c3eSPatrick McHardy memcpy(dst, src, len); 14996518518SPatrick McHardy } 15096518518SPatrick McHardy 15196518518SPatrick McHardy /** 15220a69341SPatrick McHardy * struct nft_ctx - nf_tables rule/set context 15396518518SPatrick McHardy * 15499633ab2SPablo Neira Ayuso * @net: net namespace 15596518518SPatrick McHardy * @table: the table the chain is contained in 15696518518SPatrick McHardy * @chain: the chain the rule is contained in 1570ca743a5SPablo Neira Ayuso * @nla: netlink attributes 158128ad332SPablo Neira Ayuso * @portid: netlink portID of the original message 159128ad332SPablo Neira Ayuso * @seq: netlink sequence number 16036596dadSPablo Neira Ayuso * @family: protocol family 16126b2f552STaehee Yoo * @level: depth of the chains 162128ad332SPablo Neira Ayuso * @report: notify via unicast netlink message 16396518518SPatrick McHardy */ 16496518518SPatrick McHardy struct nft_ctx { 16599633ab2SPablo Neira Ayuso struct net *net; 1667c95f6d8SPablo Neira Ayuso struct nft_table *table; 1677c95f6d8SPablo Neira Ayuso struct nft_chain *chain; 1680ca743a5SPablo Neira Ayuso const struct nlattr * const *nla; 169128ad332SPablo Neira Ayuso u32 portid; 170128ad332SPablo Neira Ayuso u32 seq; 171c9626a2cSPablo Neira Ayuso u16 flags; 17236596dadSPablo Neira Ayuso u8 family; 17326b2f552STaehee Yoo u8 level; 174128ad332SPablo Neira Ayuso bool report; 17596518518SPatrick McHardy }; 17696518518SPatrick McHardy 17796518518SPatrick McHardy struct nft_data_desc { 17896518518SPatrick McHardy enum nft_data_types type; 17996518518SPatrick McHardy unsigned int len; 18096518518SPatrick McHardy }; 18196518518SPatrick McHardy 182d0a11fc3SPatrick McHardy int nft_data_init(const struct nft_ctx *ctx, 183d0a11fc3SPatrick McHardy struct nft_data *data, unsigned int size, 18496518518SPatrick McHardy struct nft_data_desc *desc, const struct nlattr *nla); 185bb7b40aeSPablo Neira Ayuso void nft_data_hold(const struct nft_data *data, enum nft_data_types type); 18659105446SPablo Neira Ayuso void nft_data_release(const struct nft_data *data, enum nft_data_types type); 1875eccdfaaSJoe Perches int nft_data_dump(struct sk_buff *skb, int attr, const struct nft_data *data, 18896518518SPatrick McHardy enum nft_data_types type, unsigned int len); 18996518518SPatrick McHardy 19096518518SPatrick McHardy static inline enum nft_data_types nft_dreg_to_type(enum nft_registers reg) 19196518518SPatrick McHardy { 19296518518SPatrick McHardy return reg == NFT_REG_VERDICT ? NFT_DATA_VERDICT : NFT_DATA_VALUE; 19396518518SPatrick McHardy } 19496518518SPatrick McHardy 19520a69341SPatrick McHardy static inline enum nft_registers nft_type_to_reg(enum nft_data_types type) 19620a69341SPatrick McHardy { 197bf798657SPablo Neira Ayuso return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1 * NFT_REG_SIZE / NFT_REG32_SIZE; 19820a69341SPatrick McHardy } 19920a69341SPatrick McHardy 200f1d505bbSJohn W. Linville int nft_parse_u32_check(const struct nlattr *attr, int max, u32 *dest); 201b1c96ed3SPatrick McHardy unsigned int nft_parse_register(const struct nlattr *attr); 202b1c96ed3SPatrick McHardy int nft_dump_register(struct sk_buff *skb, unsigned int attr, unsigned int reg); 203b1c96ed3SPatrick McHardy 204d07db988SPatrick McHardy int nft_validate_register_load(enum nft_registers reg, unsigned int len); 2051ec10212SPatrick McHardy int nft_validate_register_store(const struct nft_ctx *ctx, 2061ec10212SPatrick McHardy enum nft_registers reg, 20796518518SPatrick McHardy const struct nft_data *data, 20845d9bcdaSPatrick McHardy enum nft_data_types type, unsigned int len); 20996518518SPatrick McHardy 21086f1ec32SPatrick McHardy /** 21186f1ec32SPatrick McHardy * struct nft_userdata - user defined data associated with an object 21286f1ec32SPatrick McHardy * 21386f1ec32SPatrick McHardy * @len: length of the data 21486f1ec32SPatrick McHardy * @data: content 21586f1ec32SPatrick McHardy * 21686f1ec32SPatrick McHardy * The presence of user data is indicated in an object specific fashion, 21786f1ec32SPatrick McHardy * so a length of zero can't occur and the value "len" indicates data 21886f1ec32SPatrick McHardy * of length len + 1. 21986f1ec32SPatrick McHardy */ 22086f1ec32SPatrick McHardy struct nft_userdata { 22186f1ec32SPatrick McHardy u8 len; 2226daf1414SGustavo A. R. Silva unsigned char data[]; 22386f1ec32SPatrick McHardy }; 22486f1ec32SPatrick McHardy 22596518518SPatrick McHardy /** 22620a69341SPatrick McHardy * struct nft_set_elem - generic representation of set elements 22720a69341SPatrick McHardy * 22820a69341SPatrick McHardy * @key: element key 2297b225d0bSPablo Neira Ayuso * @key_end: closing element key 230fe2811ebSPatrick McHardy * @priv: element private data and extensions 23120a69341SPatrick McHardy */ 23220a69341SPatrick McHardy struct nft_set_elem { 2337d740264SPatrick McHardy union { 2347d740264SPatrick McHardy u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; 2357d740264SPatrick McHardy struct nft_data val; 2367d740264SPatrick McHardy } key; 2377b225d0bSPablo Neira Ayuso union { 2387b225d0bSPablo Neira Ayuso u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; 2397b225d0bSPablo Neira Ayuso struct nft_data val; 2407b225d0bSPablo Neira Ayuso } key_end; 241fdb9c405SPablo Neira Ayuso union { 242fdb9c405SPablo Neira Ayuso u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; 243fdb9c405SPablo Neira Ayuso struct nft_data val; 244fdb9c405SPablo Neira Ayuso } data; 245fe2811ebSPatrick McHardy void *priv; 24620a69341SPatrick McHardy }; 24720a69341SPatrick McHardy 24820a69341SPatrick McHardy struct nft_set; 24920a69341SPatrick McHardy struct nft_set_iter { 2508588ac09SPablo Neira Ayuso u8 genmask; 25120a69341SPatrick McHardy unsigned int count; 25220a69341SPatrick McHardy unsigned int skip; 25320a69341SPatrick McHardy int err; 25420a69341SPatrick McHardy int (*fn)(const struct nft_ctx *ctx, 255de70185dSPablo Neira Ayuso struct nft_set *set, 25620a69341SPatrick McHardy const struct nft_set_iter *iter, 257de70185dSPablo Neira Ayuso struct nft_set_elem *elem); 25820a69341SPatrick McHardy }; 25920a69341SPatrick McHardy 26020a69341SPatrick McHardy /** 261c50b960cSPatrick McHardy * struct nft_set_desc - description of set elements 262c50b960cSPatrick McHardy * 263c50b960cSPatrick McHardy * @klen: key length 264c50b960cSPatrick McHardy * @dlen: data length 265c50b960cSPatrick McHardy * @size: number of set elements 266f3a2181eSStefano Brivio * @field_len: length of each field in concatenation, bytes 267f3a2181eSStefano Brivio * @field_count: number of concatenated fields in element 268d56aab26SPablo Neira Ayuso * @expr: set must support for expressions 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; 276d56aab26SPablo Neira Ayuso bool expr; 277c50b960cSPatrick McHardy }; 278c50b960cSPatrick McHardy 279c50b960cSPatrick McHardy /** 280c50b960cSPatrick McHardy * enum nft_set_class - performance class 281c50b960cSPatrick McHardy * 282c50b960cSPatrick McHardy * @NFT_LOOKUP_O_1: constant, O(1) 283c50b960cSPatrick McHardy * @NFT_LOOKUP_O_LOG_N: logarithmic, O(log N) 284c50b960cSPatrick McHardy * @NFT_LOOKUP_O_N: linear, O(N) 285c50b960cSPatrick McHardy */ 286c50b960cSPatrick McHardy enum nft_set_class { 287c50b960cSPatrick McHardy NFT_SET_CLASS_O_1, 288c50b960cSPatrick McHardy NFT_SET_CLASS_O_LOG_N, 289c50b960cSPatrick McHardy NFT_SET_CLASS_O_N, 290c50b960cSPatrick McHardy }; 291c50b960cSPatrick McHardy 292c50b960cSPatrick McHardy /** 293c50b960cSPatrick McHardy * struct nft_set_estimate - estimation of memory and performance 294c50b960cSPatrick McHardy * characteristics 295c50b960cSPatrick McHardy * 296c50b960cSPatrick McHardy * @size: required memory 29755af753cSPablo Neira Ayuso * @lookup: lookup performance class 2980b5a7874SPablo Neira Ayuso * @space: memory class 299c50b960cSPatrick McHardy */ 300c50b960cSPatrick McHardy struct nft_set_estimate { 3014ef360ddSTaehee Yoo u64 size; 30255af753cSPablo Neira Ayuso enum nft_set_class lookup; 3030b5a7874SPablo Neira Ayuso enum nft_set_class space; 304c50b960cSPatrick McHardy }; 305c50b960cSPatrick McHardy 306b2832dd6SPatrick McHardy struct nft_set_ext; 30722fe54d5SPatrick McHardy struct nft_expr; 308b2832dd6SPatrick McHardy 309c50b960cSPatrick McHardy /** 31020a69341SPatrick McHardy * struct nft_set_ops - nf_tables set operations 31120a69341SPatrick McHardy * 31220a69341SPatrick McHardy * @lookup: look up an element within the set 313d0a8d877SAnder Juaristi * @update: update an element if exists, add it if doesn't exist 314d0a8d877SAnder Juaristi * @delete: delete an element 31520a69341SPatrick McHardy * @insert: insert new element into set 316cc02e457SPatrick McHardy * @activate: activate new element in the next generation 3178411b644SPablo Neira Ayuso * @deactivate: lookup for element and deactivate it in the next generation 3181ba1c414SPablo Neira Ayuso * @flush: deactivate element in the next generation 31920a69341SPatrick McHardy * @remove: remove element from set 320d0a8d877SAnder Juaristi * @walk: iterate over all set elements 321ba0e4d99SPablo Neira Ayuso * @get: get set elements 32220a69341SPatrick McHardy * @privsize: function to return size of set private data 32320a69341SPatrick McHardy * @init: initialize private data of new set instance 32420a69341SPatrick McHardy * @destroy: destroy private data of set instance 325fe2811ebSPatrick McHardy * @elemsize: element private size 326d0a8d877SAnder Juaristi * 327d0a8d877SAnder Juaristi * Operations lookup, update and delete have simpler interfaces, are faster 328d0a8d877SAnder Juaristi * and currently only used in the packet path. All the rest are slower, 329d0a8d877SAnder Juaristi * control plane functions. 33020a69341SPatrick McHardy */ 33120a69341SPatrick McHardy struct nft_set_ops { 33242a55769SPablo Neira Ayuso bool (*lookup)(const struct net *net, 33342a55769SPablo Neira Ayuso const struct nft_set *set, 3348cd8937aSPatrick McHardy const u32 *key, 335b2832dd6SPatrick McHardy const struct nft_set_ext **ext); 33622fe54d5SPatrick McHardy bool (*update)(struct nft_set *set, 3378cd8937aSPatrick McHardy const u32 *key, 33822fe54d5SPatrick McHardy void *(*new)(struct nft_set *, 33922fe54d5SPatrick McHardy const struct nft_expr *, 340a55e22e9SPatrick McHardy struct nft_regs *), 34122fe54d5SPatrick McHardy const struct nft_expr *expr, 342a55e22e9SPatrick McHardy struct nft_regs *regs, 34322fe54d5SPatrick McHardy const struct nft_set_ext **ext); 344d0a8d877SAnder Juaristi bool (*delete)(const struct nft_set *set, 345d0a8d877SAnder Juaristi const u32 *key); 34622fe54d5SPatrick McHardy 34742a55769SPablo Neira Ayuso int (*insert)(const struct net *net, 34842a55769SPablo Neira Ayuso const struct nft_set *set, 349c016c7e4SPablo Neira Ayuso const struct nft_set_elem *elem, 350c016c7e4SPablo Neira Ayuso struct nft_set_ext **ext); 35142a55769SPablo Neira Ayuso void (*activate)(const struct net *net, 35242a55769SPablo Neira Ayuso const struct nft_set *set, 353cc02e457SPatrick McHardy const struct nft_set_elem *elem); 35442a55769SPablo Neira Ayuso void * (*deactivate)(const struct net *net, 35542a55769SPablo Neira Ayuso const struct nft_set *set, 356cc02e457SPatrick McHardy const struct nft_set_elem *elem); 3571ba1c414SPablo Neira Ayuso bool (*flush)(const struct net *net, 3588411b644SPablo Neira Ayuso const struct nft_set *set, 3598411b644SPablo Neira Ayuso void *priv); 3605cb82a38SPablo Neira Ayuso void (*remove)(const struct net *net, 3615cb82a38SPablo Neira Ayuso const struct nft_set *set, 36220a69341SPatrick McHardy const struct nft_set_elem *elem); 36320a69341SPatrick McHardy void (*walk)(const struct nft_ctx *ctx, 364de70185dSPablo Neira Ayuso struct nft_set *set, 36520a69341SPatrick McHardy struct nft_set_iter *iter); 366ba0e4d99SPablo Neira Ayuso void * (*get)(const struct net *net, 367ba0e4d99SPablo Neira Ayuso const struct nft_set *set, 368ba0e4d99SPablo Neira Ayuso const struct nft_set_elem *elem, 369ba0e4d99SPablo Neira Ayuso unsigned int flags); 37020a69341SPatrick McHardy 3714ef360ddSTaehee Yoo u64 (*privsize)(const struct nlattr * const nla[], 372347b408dSPablo Neira Ayuso const struct nft_set_desc *desc); 373c50b960cSPatrick McHardy bool (*estimate)(const struct nft_set_desc *desc, 374c50b960cSPatrick McHardy u32 features, 375c50b960cSPatrick McHardy struct nft_set_estimate *est); 37620a69341SPatrick McHardy int (*init)(const struct nft_set *set, 377c50b960cSPatrick McHardy const struct nft_set_desc *desc, 37820a69341SPatrick McHardy const struct nlattr * const nla[]); 37920a69341SPatrick McHardy void (*destroy)(const struct nft_set *set); 38079b174adSPablo Neira Ayuso void (*gc_init)(const struct nft_set *set); 38120a69341SPatrick McHardy 382fe2811ebSPatrick McHardy unsigned int elemsize; 38320a69341SPatrick McHardy }; 38420a69341SPatrick McHardy 38571cc0873SPhil Sutter /** 38671cc0873SPhil Sutter * struct nft_set_type - nf_tables set type 38771cc0873SPhil Sutter * 38871cc0873SPhil Sutter * @ops: set ops for this type 38971cc0873SPhil Sutter * @features: features supported by the implementation 39071cc0873SPhil Sutter */ 39171cc0873SPhil Sutter struct nft_set_type { 39271cc0873SPhil Sutter const struct nft_set_ops ops; 39371cc0873SPhil Sutter u32 features; 39471cc0873SPhil Sutter }; 39571cc0873SPhil Sutter #define to_set_type(o) container_of(o, struct nft_set_type, ops) 39671cc0873SPhil Sutter 39720a69341SPatrick McHardy /** 39820a69341SPatrick McHardy * struct nft_set - nf_tables set instance 39920a69341SPatrick McHardy * 40020a69341SPatrick McHardy * @list: table set list node 40120a69341SPatrick McHardy * @bindings: list of set bindings 4023453c927SPablo Neira Ayuso * @table: table this set belongs to 4033453c927SPablo Neira Ayuso * @net: netnamespace this set belongs to 40420a69341SPatrick McHardy * @name: name of the set 4053ecbfd65SHarsha Sharma * @handle: unique handle of the set 40620a69341SPatrick McHardy * @ktype: key type (numeric type defined by userspace, not used in the kernel) 40720a69341SPatrick McHardy * @dtype: data type (verdict or numeric type defined by userspace) 4088aeff920SPablo Neira Ayuso * @objtype: object type (see NFT_OBJECT_* definitions) 409c50b960cSPatrick McHardy * @size: maximum set size 410f3a2181eSStefano Brivio * @field_len: length of each field in concatenation, bytes 411f3a2181eSStefano Brivio * @field_count: number of concatenated fields in element 412273fe3f1SPablo Neira Ayuso * @use: number of rules references to this set 413c50b960cSPatrick McHardy * @nelems: number of elements 4143dd0673aSPatrick McHardy * @ndeact: number of deactivated elements queued for removal 415d3e2a111SAnders K. Pedersen * @timeout: default timeout value in jiffies 416761da293SPatrick McHardy * @gc_int: garbage collection interval in msecs 4179363dc4bSArturo Borrero * @policy: set parameterization (see enum nft_set_policies) 418e6d8ecacSCarlos Falgueras García * @udlen: user data length 419e6d8ecacSCarlos Falgueras García * @udata: user data 42065038428SPablo Neira Ayuso * @expr: stateful expression 42120a69341SPatrick McHardy * @ops: set ops 42220a69341SPatrick McHardy * @flags: set flags 42337a9cc52SPablo Neira Ayuso * @genmask: generation mask 42420a69341SPatrick McHardy * @klen: key length 42520a69341SPatrick McHardy * @dlen: data length 42620a69341SPatrick McHardy * @data: private set data 42720a69341SPatrick McHardy */ 42820a69341SPatrick McHardy struct nft_set { 42920a69341SPatrick McHardy struct list_head list; 43020a69341SPatrick McHardy struct list_head bindings; 4313453c927SPablo Neira Ayuso struct nft_table *table; 4323453c927SPablo Neira Ayuso possible_net_t net; 43338745490SPhil Sutter char *name; 4343ecbfd65SHarsha Sharma u64 handle; 43520a69341SPatrick McHardy u32 ktype; 43620a69341SPatrick McHardy u32 dtype; 4378aeff920SPablo Neira Ayuso u32 objtype; 438c50b960cSPatrick McHardy u32 size; 439f3a2181eSStefano Brivio u8 field_len[NFT_REG32_COUNT]; 440f3a2181eSStefano Brivio u8 field_count; 441273fe3f1SPablo Neira Ayuso u32 use; 4423dd0673aSPatrick McHardy atomic_t nelems; 4433dd0673aSPatrick McHardy u32 ndeact; 444761da293SPatrick McHardy u64 timeout; 445761da293SPatrick McHardy u32 gc_int; 4469363dc4bSArturo Borrero u16 policy; 447e6d8ecacSCarlos Falgueras García u16 udlen; 448e6d8ecacSCarlos Falgueras García unsigned char *udata; 44965038428SPablo Neira Ayuso struct nft_expr *expr; 45020a69341SPatrick McHardy /* runtime data below here */ 45120a69341SPatrick McHardy const struct nft_set_ops *ops ____cacheline_aligned; 4526a0a8d10SPablo Neira Ayuso u16 flags:14, 45337a9cc52SPablo Neira Ayuso genmask:2; 45420a69341SPatrick McHardy u8 klen; 45520a69341SPatrick McHardy u8 dlen; 45620a69341SPatrick McHardy unsigned char data[] 45720a69341SPatrick McHardy __attribute__((aligned(__alignof__(u64)))); 45820a69341SPatrick McHardy }; 45920a69341SPatrick McHardy 460408070d6SPablo Neira Ayuso static inline bool nft_set_is_anonymous(const struct nft_set *set) 461408070d6SPablo Neira Ayuso { 462408070d6SPablo Neira Ayuso return set->flags & NFT_SET_ANONYMOUS; 463408070d6SPablo Neira Ayuso } 464408070d6SPablo Neira Ayuso 46520a69341SPatrick McHardy static inline void *nft_set_priv(const struct nft_set *set) 46620a69341SPatrick McHardy { 46720a69341SPatrick McHardy return (void *)set->data; 46820a69341SPatrick McHardy } 46920a69341SPatrick McHardy 4709d098292SPatrick McHardy static inline struct nft_set *nft_set_container_of(const void *priv) 4719d098292SPatrick McHardy { 4729d098292SPatrick McHardy return (void *)priv - offsetof(struct nft_set, data); 4739d098292SPatrick McHardy } 4749d098292SPatrick McHardy 47510659cbaSPablo Neira Ayuso struct nft_set *nft_set_lookup_global(const struct net *net, 476c7a72e3fSPablo Neira Ayuso const struct nft_table *table, 477c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_name, 478c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_id, 479c7a72e3fSPablo Neira Ayuso u8 genmask); 48020a69341SPatrick McHardy 481761da293SPatrick McHardy static inline unsigned long nft_set_gc_interval(const struct nft_set *set) 482761da293SPatrick McHardy { 483761da293SPatrick McHardy return set->gc_int ? msecs_to_jiffies(set->gc_int) : HZ; 484761da293SPatrick McHardy } 485761da293SPatrick McHardy 48620a69341SPatrick McHardy /** 48720a69341SPatrick McHardy * struct nft_set_binding - nf_tables set binding 48820a69341SPatrick McHardy * 48920a69341SPatrick McHardy * @list: set bindings list node 49020a69341SPatrick McHardy * @chain: chain containing the rule bound to the set 49111113e19SPatrick McHardy * @flags: set action flags 49220a69341SPatrick McHardy * 49320a69341SPatrick McHardy * A set binding contains all information necessary for validation 49420a69341SPatrick McHardy * of new elements added to a bound set. 49520a69341SPatrick McHardy */ 49620a69341SPatrick McHardy struct nft_set_binding { 49720a69341SPatrick McHardy struct list_head list; 49820a69341SPatrick McHardy const struct nft_chain *chain; 49911113e19SPatrick McHardy u32 flags; 50020a69341SPatrick McHardy }; 50120a69341SPatrick McHardy 502273fe3f1SPablo Neira Ayuso enum nft_trans_phase; 503273fe3f1SPablo Neira Ayuso void nf_tables_deactivate_set(const struct nft_ctx *ctx, struct nft_set *set, 504273fe3f1SPablo Neira Ayuso struct nft_set_binding *binding, 505273fe3f1SPablo Neira Ayuso enum nft_trans_phase phase); 5065eccdfaaSJoe Perches int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, 50720a69341SPatrick McHardy struct nft_set_binding *binding); 508cd5125d8SFlorian Westphal void nf_tables_destroy_set(const struct nft_ctx *ctx, struct nft_set *set); 50920a69341SPatrick McHardy 5103ac4c07aSPatrick McHardy /** 5113ac4c07aSPatrick McHardy * enum nft_set_extensions - set extension type IDs 5123ac4c07aSPatrick McHardy * 5133ac4c07aSPatrick McHardy * @NFT_SET_EXT_KEY: element key 5147b225d0bSPablo Neira Ayuso * @NFT_SET_EXT_KEY_END: upper bound element key, for ranges 5153ac4c07aSPatrick McHardy * @NFT_SET_EXT_DATA: mapping data 5163ac4c07aSPatrick McHardy * @NFT_SET_EXT_FLAGS: element flags 517c3e1b005SPatrick McHardy * @NFT_SET_EXT_TIMEOUT: element timeout 518c3e1b005SPatrick McHardy * @NFT_SET_EXT_EXPIRATION: element expiration time 51968e942e8SPatrick McHardy * @NFT_SET_EXT_USERDATA: user data associated with the element 520f25ad2e9SPatrick McHardy * @NFT_SET_EXT_EXPR: expression assiociated with the element 5218aeff920SPablo Neira Ayuso * @NFT_SET_EXT_OBJREF: stateful object reference associated with element 5223ac4c07aSPatrick McHardy * @NFT_SET_EXT_NUM: number of extension types 5233ac4c07aSPatrick McHardy */ 5243ac4c07aSPatrick McHardy enum nft_set_extensions { 5253ac4c07aSPatrick McHardy NFT_SET_EXT_KEY, 5267b225d0bSPablo Neira Ayuso NFT_SET_EXT_KEY_END, 5273ac4c07aSPatrick McHardy NFT_SET_EXT_DATA, 5283ac4c07aSPatrick McHardy NFT_SET_EXT_FLAGS, 529c3e1b005SPatrick McHardy NFT_SET_EXT_TIMEOUT, 530c3e1b005SPatrick McHardy NFT_SET_EXT_EXPIRATION, 53168e942e8SPatrick McHardy NFT_SET_EXT_USERDATA, 532f25ad2e9SPatrick McHardy NFT_SET_EXT_EXPR, 5338aeff920SPablo Neira Ayuso NFT_SET_EXT_OBJREF, 5343ac4c07aSPatrick McHardy NFT_SET_EXT_NUM 5353ac4c07aSPatrick McHardy }; 5363ac4c07aSPatrick McHardy 5373ac4c07aSPatrick McHardy /** 5383ac4c07aSPatrick McHardy * struct nft_set_ext_type - set extension type 5393ac4c07aSPatrick McHardy * 5403ac4c07aSPatrick McHardy * @len: fixed part length of the extension 5413ac4c07aSPatrick McHardy * @align: alignment requirements of the extension 5423ac4c07aSPatrick McHardy */ 5433ac4c07aSPatrick McHardy struct nft_set_ext_type { 5443ac4c07aSPatrick McHardy u8 len; 5453ac4c07aSPatrick McHardy u8 align; 5463ac4c07aSPatrick McHardy }; 5473ac4c07aSPatrick McHardy 5483ac4c07aSPatrick McHardy extern const struct nft_set_ext_type nft_set_ext_types[]; 5493ac4c07aSPatrick McHardy 5503ac4c07aSPatrick McHardy /** 5513ac4c07aSPatrick McHardy * struct nft_set_ext_tmpl - set extension template 5523ac4c07aSPatrick McHardy * 5533ac4c07aSPatrick McHardy * @len: length of extension area 5543ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 5553ac4c07aSPatrick McHardy */ 5563ac4c07aSPatrick McHardy struct nft_set_ext_tmpl { 5573ac4c07aSPatrick McHardy u16 len; 5583ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 5593ac4c07aSPatrick McHardy }; 5603ac4c07aSPatrick McHardy 5613ac4c07aSPatrick McHardy /** 5623ac4c07aSPatrick McHardy * struct nft_set_ext - set extensions 5633ac4c07aSPatrick McHardy * 564cc02e457SPatrick McHardy * @genmask: generation mask 5653ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 5663ac4c07aSPatrick McHardy * @data: beginning of extension data 5673ac4c07aSPatrick McHardy */ 5683ac4c07aSPatrick McHardy struct nft_set_ext { 569cc02e457SPatrick McHardy u8 genmask; 5703ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 5716daf1414SGustavo A. R. Silva char data[]; 5723ac4c07aSPatrick McHardy }; 5733ac4c07aSPatrick McHardy 5743ac4c07aSPatrick McHardy static inline void nft_set_ext_prepare(struct nft_set_ext_tmpl *tmpl) 5753ac4c07aSPatrick McHardy { 5763ac4c07aSPatrick McHardy memset(tmpl, 0, sizeof(*tmpl)); 5773ac4c07aSPatrick McHardy tmpl->len = sizeof(struct nft_set_ext); 5783ac4c07aSPatrick McHardy } 5793ac4c07aSPatrick McHardy 5803ac4c07aSPatrick McHardy static inline void nft_set_ext_add_length(struct nft_set_ext_tmpl *tmpl, u8 id, 5813ac4c07aSPatrick McHardy unsigned int len) 5823ac4c07aSPatrick McHardy { 5833ac4c07aSPatrick McHardy tmpl->len = ALIGN(tmpl->len, nft_set_ext_types[id].align); 5843ac4c07aSPatrick McHardy BUG_ON(tmpl->len > U8_MAX); 5853ac4c07aSPatrick McHardy tmpl->offset[id] = tmpl->len; 5863ac4c07aSPatrick McHardy tmpl->len += nft_set_ext_types[id].len + len; 5873ac4c07aSPatrick McHardy } 5883ac4c07aSPatrick McHardy 5893ac4c07aSPatrick McHardy static inline void nft_set_ext_add(struct nft_set_ext_tmpl *tmpl, u8 id) 5903ac4c07aSPatrick McHardy { 5913ac4c07aSPatrick McHardy nft_set_ext_add_length(tmpl, id, 0); 5923ac4c07aSPatrick McHardy } 5933ac4c07aSPatrick McHardy 5943ac4c07aSPatrick McHardy static inline void nft_set_ext_init(struct nft_set_ext *ext, 5953ac4c07aSPatrick McHardy const struct nft_set_ext_tmpl *tmpl) 5963ac4c07aSPatrick McHardy { 5973ac4c07aSPatrick McHardy memcpy(ext->offset, tmpl->offset, sizeof(ext->offset)); 5983ac4c07aSPatrick McHardy } 5993ac4c07aSPatrick McHardy 6003ac4c07aSPatrick McHardy static inline bool __nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) 6013ac4c07aSPatrick McHardy { 6023ac4c07aSPatrick McHardy return !!ext->offset[id]; 6033ac4c07aSPatrick McHardy } 6043ac4c07aSPatrick McHardy 6053ac4c07aSPatrick McHardy static inline bool nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) 6063ac4c07aSPatrick McHardy { 6073ac4c07aSPatrick McHardy return ext && __nft_set_ext_exists(ext, id); 6083ac4c07aSPatrick McHardy } 6093ac4c07aSPatrick McHardy 6103ac4c07aSPatrick McHardy static inline void *nft_set_ext(const struct nft_set_ext *ext, u8 id) 6113ac4c07aSPatrick McHardy { 6123ac4c07aSPatrick McHardy return (void *)ext + ext->offset[id]; 6133ac4c07aSPatrick McHardy } 6143ac4c07aSPatrick McHardy 6153ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_key(const struct nft_set_ext *ext) 6163ac4c07aSPatrick McHardy { 6173ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_KEY); 6183ac4c07aSPatrick McHardy } 6193ac4c07aSPatrick McHardy 6207b225d0bSPablo Neira Ayuso static inline struct nft_data *nft_set_ext_key_end(const struct nft_set_ext *ext) 6217b225d0bSPablo Neira Ayuso { 6227b225d0bSPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_KEY_END); 6237b225d0bSPablo Neira Ayuso } 6247b225d0bSPablo Neira Ayuso 6253ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_data(const struct nft_set_ext *ext) 6263ac4c07aSPatrick McHardy { 6273ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_DATA); 6283ac4c07aSPatrick McHardy } 6293ac4c07aSPatrick McHardy 6303ac4c07aSPatrick McHardy static inline u8 *nft_set_ext_flags(const struct nft_set_ext *ext) 6313ac4c07aSPatrick McHardy { 6323ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_FLAGS); 6333ac4c07aSPatrick McHardy } 634ef1f7df9SPatrick McHardy 635c3e1b005SPatrick McHardy static inline u64 *nft_set_ext_timeout(const struct nft_set_ext *ext) 636c3e1b005SPatrick McHardy { 637c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_TIMEOUT); 638c3e1b005SPatrick McHardy } 639c3e1b005SPatrick McHardy 6408e1102d5SFlorian Westphal static inline u64 *nft_set_ext_expiration(const struct nft_set_ext *ext) 641c3e1b005SPatrick McHardy { 642c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_EXPIRATION); 643c3e1b005SPatrick McHardy } 644c3e1b005SPatrick McHardy 64568e942e8SPatrick McHardy static inline struct nft_userdata *nft_set_ext_userdata(const struct nft_set_ext *ext) 64668e942e8SPatrick McHardy { 64768e942e8SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_USERDATA); 64868e942e8SPatrick McHardy } 64968e942e8SPatrick McHardy 650f25ad2e9SPatrick McHardy static inline struct nft_expr *nft_set_ext_expr(const struct nft_set_ext *ext) 651f25ad2e9SPatrick McHardy { 652f25ad2e9SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_EXPR); 653f25ad2e9SPatrick McHardy } 654f25ad2e9SPatrick McHardy 655c3e1b005SPatrick McHardy static inline bool nft_set_elem_expired(const struct nft_set_ext *ext) 656c3e1b005SPatrick McHardy { 657c3e1b005SPatrick McHardy return nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION) && 6588e1102d5SFlorian Westphal time_is_before_eq_jiffies64(*nft_set_ext_expiration(ext)); 659c3e1b005SPatrick McHardy } 660c3e1b005SPatrick McHardy 661fe2811ebSPatrick McHardy static inline struct nft_set_ext *nft_set_elem_ext(const struct nft_set *set, 662fe2811ebSPatrick McHardy void *elem) 663fe2811ebSPatrick McHardy { 664fe2811ebSPatrick McHardy return elem + set->ops->elemsize; 665fe2811ebSPatrick McHardy } 666fe2811ebSPatrick McHardy 6678aeff920SPablo Neira Ayuso static inline struct nft_object **nft_set_ext_obj(const struct nft_set_ext *ext) 6688aeff920SPablo Neira Ayuso { 6698aeff920SPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_OBJREF); 6708aeff920SPablo Neira Ayuso } 6718aeff920SPablo Neira Ayuso 672a7fc9368SPablo Neira Ayuso struct nft_expr *nft_set_elem_expr_alloc(const struct nft_ctx *ctx, 673a7fc9368SPablo Neira Ayuso const struct nft_set *set, 674a7fc9368SPablo Neira Ayuso const struct nlattr *attr); 675a7fc9368SPablo Neira Ayuso 67622fe54d5SPatrick McHardy void *nft_set_elem_init(const struct nft_set *set, 67722fe54d5SPatrick McHardy const struct nft_set_ext_tmpl *tmpl, 6787b225d0bSPablo Neira Ayuso const u32 *key, const u32 *key_end, const u32 *data, 67979ebb5bbSLaura Garcia Liebana u64 timeout, u64 expiration, gfp_t gfp); 68061f9e292SLiping Zhang void nft_set_elem_destroy(const struct nft_set *set, void *elem, 68161f9e292SLiping Zhang bool destroy_expr); 68261edafbbSPatrick McHardy 68320a69341SPatrick McHardy /** 684cfed7e1bSPatrick McHardy * struct nft_set_gc_batch_head - nf_tables set garbage collection batch 685cfed7e1bSPatrick McHardy * 686cfed7e1bSPatrick McHardy * @rcu: rcu head 687cfed7e1bSPatrick McHardy * @set: set the elements belong to 688cfed7e1bSPatrick McHardy * @cnt: count of elements 689cfed7e1bSPatrick McHardy */ 690cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head { 691cfed7e1bSPatrick McHardy struct rcu_head rcu; 692cfed7e1bSPatrick McHardy const struct nft_set *set; 693cfed7e1bSPatrick McHardy unsigned int cnt; 694cfed7e1bSPatrick McHardy }; 695cfed7e1bSPatrick McHardy 696cfed7e1bSPatrick McHardy #define NFT_SET_GC_BATCH_SIZE ((PAGE_SIZE - \ 697cfed7e1bSPatrick McHardy sizeof(struct nft_set_gc_batch_head)) / \ 698cfed7e1bSPatrick McHardy sizeof(void *)) 699cfed7e1bSPatrick McHardy 700cfed7e1bSPatrick McHardy /** 701cfed7e1bSPatrick McHardy * struct nft_set_gc_batch - nf_tables set garbage collection batch 702cfed7e1bSPatrick McHardy * 703cfed7e1bSPatrick McHardy * @head: GC batch head 704cfed7e1bSPatrick McHardy * @elems: garbage collection elements 705cfed7e1bSPatrick McHardy */ 706cfed7e1bSPatrick McHardy struct nft_set_gc_batch { 707cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head head; 708cfed7e1bSPatrick McHardy void *elems[NFT_SET_GC_BATCH_SIZE]; 709cfed7e1bSPatrick McHardy }; 710cfed7e1bSPatrick McHardy 711cfed7e1bSPatrick McHardy struct nft_set_gc_batch *nft_set_gc_batch_alloc(const struct nft_set *set, 712cfed7e1bSPatrick McHardy gfp_t gfp); 713cfed7e1bSPatrick McHardy void nft_set_gc_batch_release(struct rcu_head *rcu); 714cfed7e1bSPatrick McHardy 715cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_complete(struct nft_set_gc_batch *gcb) 716cfed7e1bSPatrick McHardy { 717cfed7e1bSPatrick McHardy if (gcb != NULL) 718cfed7e1bSPatrick McHardy call_rcu(&gcb->head.rcu, nft_set_gc_batch_release); 719cfed7e1bSPatrick McHardy } 720cfed7e1bSPatrick McHardy 721cfed7e1bSPatrick McHardy static inline struct nft_set_gc_batch * 722cfed7e1bSPatrick McHardy nft_set_gc_batch_check(const struct nft_set *set, struct nft_set_gc_batch *gcb, 723cfed7e1bSPatrick McHardy gfp_t gfp) 724cfed7e1bSPatrick McHardy { 725cfed7e1bSPatrick McHardy if (gcb != NULL) { 726cfed7e1bSPatrick McHardy if (gcb->head.cnt + 1 < ARRAY_SIZE(gcb->elems)) 727cfed7e1bSPatrick McHardy return gcb; 728cfed7e1bSPatrick McHardy nft_set_gc_batch_complete(gcb); 729cfed7e1bSPatrick McHardy } 730cfed7e1bSPatrick McHardy return nft_set_gc_batch_alloc(set, gfp); 731cfed7e1bSPatrick McHardy } 732cfed7e1bSPatrick McHardy 733cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_add(struct nft_set_gc_batch *gcb, 734cfed7e1bSPatrick McHardy void *elem) 735cfed7e1bSPatrick McHardy { 736cfed7e1bSPatrick McHardy gcb->elems[gcb->head.cnt++] = elem; 737cfed7e1bSPatrick McHardy } 738cfed7e1bSPatrick McHardy 739b8e20400SPablo Neira Ayuso struct nft_expr_ops; 740cfed7e1bSPatrick McHardy /** 741ef1f7df9SPatrick McHardy * struct nft_expr_type - nf_tables expression type 74296518518SPatrick McHardy * 743ef1f7df9SPatrick McHardy * @select_ops: function to select nft_expr_ops 744b8e20400SPablo Neira Ayuso * @release_ops: release nft_expr_ops 745ef1f7df9SPatrick McHardy * @ops: default ops, used when no select_ops functions is present 74696518518SPatrick McHardy * @list: used internally 74796518518SPatrick McHardy * @name: Identifier 74896518518SPatrick McHardy * @owner: module reference 74996518518SPatrick McHardy * @policy: netlink attribute policy 75096518518SPatrick McHardy * @maxattr: highest netlink attribute number 75164d46806SPatrick McHardy * @family: address family for AF-specific types 752151d799aSPatrick McHardy * @flags: expression type flags 753ef1f7df9SPatrick McHardy */ 754ef1f7df9SPatrick McHardy struct nft_expr_type { 7550ca743a5SPablo Neira Ayuso const struct nft_expr_ops *(*select_ops)(const struct nft_ctx *, 7560ca743a5SPablo Neira Ayuso const struct nlattr * const tb[]); 757b8e20400SPablo Neira Ayuso void (*release_ops)(const struct nft_expr_ops *ops); 758ef1f7df9SPatrick McHardy const struct nft_expr_ops *ops; 759ef1f7df9SPatrick McHardy struct list_head list; 760ef1f7df9SPatrick McHardy const char *name; 761ef1f7df9SPatrick McHardy struct module *owner; 762ef1f7df9SPatrick McHardy const struct nla_policy *policy; 763ef1f7df9SPatrick McHardy unsigned int maxattr; 76464d46806SPatrick McHardy u8 family; 765151d799aSPatrick McHardy u8 flags; 766ef1f7df9SPatrick McHardy }; 767ef1f7df9SPatrick McHardy 768151d799aSPatrick McHardy #define NFT_EXPR_STATEFUL 0x1 76979b174adSPablo Neira Ayuso #define NFT_EXPR_GC 0x2 770151d799aSPatrick McHardy 771f6ac8585SPablo Neira Ayuso enum nft_trans_phase { 772f6ac8585SPablo Neira Ayuso NFT_TRANS_PREPARE, 773f6ac8585SPablo Neira Ayuso NFT_TRANS_ABORT, 774f6ac8585SPablo Neira Ayuso NFT_TRANS_COMMIT, 775f6ac8585SPablo Neira Ayuso NFT_TRANS_RELEASE 776f6ac8585SPablo Neira Ayuso }; 777f6ac8585SPablo Neira Ayuso 778c9626a2cSPablo Neira Ayuso struct nft_flow_rule; 779c9626a2cSPablo Neira Ayuso struct nft_offload_ctx; 780c9626a2cSPablo Neira Ayuso 781ef1f7df9SPatrick McHardy /** 782ef1f7df9SPatrick McHardy * struct nft_expr_ops - nf_tables expression operations 783ef1f7df9SPatrick McHardy * 784ef1f7df9SPatrick McHardy * @eval: Expression evaluation function 78596518518SPatrick McHardy * @size: full expression size, including private data size 786ef1f7df9SPatrick McHardy * @init: initialization function 787cd5125d8SFlorian Westphal * @activate: activate expression in the next generation 788cd5125d8SFlorian Westphal * @deactivate: deactivate expression in next generation 789cd5125d8SFlorian Westphal * @destroy: destruction function, called after synchronize_rcu 790ef1f7df9SPatrick McHardy * @dump: function to dump parameters 791ef1f7df9SPatrick McHardy * @type: expression type 7920ca743a5SPablo Neira Ayuso * @validate: validate expression, called during loop detection 7930ca743a5SPablo Neira Ayuso * @data: extra data to attach to this expression operation 79496518518SPatrick McHardy */ 79596518518SPatrick McHardy struct nft_expr; 79696518518SPatrick McHardy struct nft_expr_ops { 79796518518SPatrick McHardy void (*eval)(const struct nft_expr *expr, 798a55e22e9SPatrick McHardy struct nft_regs *regs, 79996518518SPatrick McHardy const struct nft_pktinfo *pkt); 800086f3321SPablo Neira Ayuso int (*clone)(struct nft_expr *dst, 801086f3321SPablo Neira Ayuso const struct nft_expr *src); 802ef1f7df9SPatrick McHardy unsigned int size; 803ef1f7df9SPatrick McHardy 80496518518SPatrick McHardy int (*init)(const struct nft_ctx *ctx, 80596518518SPatrick McHardy const struct nft_expr *expr, 80696518518SPatrick McHardy const struct nlattr * const tb[]); 807bb7b40aeSPablo Neira Ayuso void (*activate)(const struct nft_ctx *ctx, 808bb7b40aeSPablo Neira Ayuso const struct nft_expr *expr); 809bb7b40aeSPablo Neira Ayuso void (*deactivate)(const struct nft_ctx *ctx, 810f6ac8585SPablo Neira Ayuso const struct nft_expr *expr, 811f6ac8585SPablo Neira Ayuso enum nft_trans_phase phase); 81262472bceSPatrick McHardy void (*destroy)(const struct nft_ctx *ctx, 81362472bceSPatrick McHardy const struct nft_expr *expr); 814371ebcbbSPablo Neira Ayuso void (*destroy_clone)(const struct nft_ctx *ctx, 815371ebcbbSPablo Neira Ayuso const struct nft_expr *expr); 81696518518SPatrick McHardy int (*dump)(struct sk_buff *skb, 81796518518SPatrick McHardy const struct nft_expr *expr); 8180ca743a5SPablo Neira Ayuso int (*validate)(const struct nft_ctx *ctx, 8190ca743a5SPablo Neira Ayuso const struct nft_expr *expr, 8200ca743a5SPablo Neira Ayuso const struct nft_data **data); 82179b174adSPablo Neira Ayuso bool (*gc)(struct net *net, 82279b174adSPablo Neira Ayuso const struct nft_expr *expr); 823c9626a2cSPablo Neira Ayuso int (*offload)(struct nft_offload_ctx *ctx, 824c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow, 825c9626a2cSPablo Neira Ayuso const struct nft_expr *expr); 826c9626a2cSPablo Neira Ayuso u32 offload_flags; 827ef1f7df9SPatrick McHardy const struct nft_expr_type *type; 8280ca743a5SPablo Neira Ayuso void *data; 82996518518SPatrick McHardy }; 83096518518SPatrick McHardy 831ef1f7df9SPatrick McHardy #define NFT_EXPR_MAXATTR 16 83296518518SPatrick McHardy #define NFT_EXPR_SIZE(size) (sizeof(struct nft_expr) + \ 83396518518SPatrick McHardy ALIGN(size, __alignof__(struct nft_expr))) 83496518518SPatrick McHardy 83596518518SPatrick McHardy /** 83696518518SPatrick McHardy * struct nft_expr - nf_tables expression 83796518518SPatrick McHardy * 83896518518SPatrick McHardy * @ops: expression ops 83996518518SPatrick McHardy * @data: expression private data 84096518518SPatrick McHardy */ 84196518518SPatrick McHardy struct nft_expr { 84296518518SPatrick McHardy const struct nft_expr_ops *ops; 843250367c5SLukas Wunner unsigned char data[] 844250367c5SLukas Wunner __attribute__((aligned(__alignof__(u64)))); 84596518518SPatrick McHardy }; 84696518518SPatrick McHardy 84796518518SPatrick McHardy static inline void *nft_expr_priv(const struct nft_expr *expr) 84896518518SPatrick McHardy { 84996518518SPatrick McHardy return (void *)expr->data; 85096518518SPatrick McHardy } 85196518518SPatrick McHardy 852c604cc69SPablo Neira Ayuso int nft_expr_clone(struct nft_expr *dst, struct nft_expr *src); 8530b2d8a7bSPatrick McHardy void nft_expr_destroy(const struct nft_ctx *ctx, struct nft_expr *expr); 8540b2d8a7bSPatrick McHardy int nft_expr_dump(struct sk_buff *skb, unsigned int attr, 8550b2d8a7bSPatrick McHardy const struct nft_expr *expr); 8560b2d8a7bSPatrick McHardy 85796518518SPatrick McHardy /** 85896518518SPatrick McHardy * struct nft_rule - nf_tables rule 85996518518SPatrick McHardy * 86096518518SPatrick McHardy * @list: used internally 86196518518SPatrick McHardy * @handle: rule handle 8620628b123SPablo Neira Ayuso * @genmask: generation mask 86396518518SPatrick McHardy * @dlen: length of expression data 86486f1ec32SPatrick McHardy * @udata: user data is appended to the rule 86596518518SPatrick McHardy * @data: expression data 86696518518SPatrick McHardy */ 86796518518SPatrick McHardy struct nft_rule { 86896518518SPatrick McHardy struct list_head list; 8690768b3b3SPablo Neira Ayuso u64 handle:42, 8700628b123SPablo Neira Ayuso genmask:2, 8710768b3b3SPablo Neira Ayuso dlen:12, 87286f1ec32SPatrick McHardy udata:1; 87396518518SPatrick McHardy unsigned char data[] 87496518518SPatrick McHardy __attribute__((aligned(__alignof__(struct nft_expr)))); 87596518518SPatrick McHardy }; 87696518518SPatrick McHardy 87796518518SPatrick McHardy static inline struct nft_expr *nft_expr_first(const struct nft_rule *rule) 87896518518SPatrick McHardy { 87996518518SPatrick McHardy return (struct nft_expr *)&rule->data[0]; 88096518518SPatrick McHardy } 88196518518SPatrick McHardy 88296518518SPatrick McHardy static inline struct nft_expr *nft_expr_next(const struct nft_expr *expr) 88396518518SPatrick McHardy { 88496518518SPatrick McHardy return ((void *)expr) + expr->ops->size; 88596518518SPatrick McHardy } 88696518518SPatrick McHardy 88796518518SPatrick McHardy static inline struct nft_expr *nft_expr_last(const struct nft_rule *rule) 88896518518SPatrick McHardy { 88996518518SPatrick McHardy return (struct nft_expr *)&rule->data[rule->dlen]; 89096518518SPatrick McHardy } 89196518518SPatrick McHardy 89286f1ec32SPatrick McHardy static inline struct nft_userdata *nft_userdata(const struct nft_rule *rule) 8930768b3b3SPablo Neira Ayuso { 8940768b3b3SPablo Neira Ayuso return (void *)&rule->data[rule->dlen]; 8950768b3b3SPablo Neira Ayuso } 8960768b3b3SPablo Neira Ayuso 897d0e2c7deSPablo Neira Ayuso void nf_tables_rule_release(const struct nft_ctx *ctx, struct nft_rule *rule); 898d0e2c7deSPablo Neira Ayuso 89976adfafeSPablo Neira Ayuso static inline void nft_set_elem_update_expr(const struct nft_set_ext *ext, 90076adfafeSPablo Neira Ayuso struct nft_regs *regs, 90176adfafeSPablo Neira Ayuso const struct nft_pktinfo *pkt) 90276adfafeSPablo Neira Ayuso { 90376adfafeSPablo Neira Ayuso struct nft_expr *expr; 90476adfafeSPablo Neira Ayuso 905a26c1e49SPablo Neira Ayuso if (__nft_set_ext_exists(ext, NFT_SET_EXT_EXPR)) { 90676adfafeSPablo Neira Ayuso expr = nft_set_ext_expr(ext); 90776adfafeSPablo Neira Ayuso expr->ops->eval(expr, regs, pkt); 90876adfafeSPablo Neira Ayuso } 90976adfafeSPablo Neira Ayuso } 91076adfafeSPablo Neira Ayuso 91196518518SPatrick McHardy /* 91296518518SPatrick McHardy * The last pointer isn't really necessary, but the compiler isn't able to 91396518518SPatrick McHardy * determine that the result of nft_expr_last() is always the same since it 91496518518SPatrick McHardy * can't assume that the dlen value wasn't changed within calls in the loop. 91596518518SPatrick McHardy */ 91696518518SPatrick McHardy #define nft_rule_for_each_expr(expr, last, rule) \ 91796518518SPatrick McHardy for ((expr) = nft_expr_first(rule), (last) = nft_expr_last(rule); \ 91896518518SPatrick McHardy (expr) != (last); \ 91996518518SPatrick McHardy (expr) = nft_expr_next(expr)) 92096518518SPatrick McHardy 921ad652f38SPablo Neira Ayuso #define NFT_CHAIN_POLICY_UNSET U8_MAX 922ad652f38SPablo Neira Ayuso 92396518518SPatrick McHardy /** 92496518518SPatrick McHardy * struct nft_chain - nf_tables chain 92596518518SPatrick McHardy * 92696518518SPatrick McHardy * @rules: list of rules in the chain 92796518518SPatrick McHardy * @list: used internally 9281b2470e5SFlorian Westphal * @rhlhead: used internally 929b5bc89bfSPablo Neira Ayuso * @table: table that this chain belongs to 93096518518SPatrick McHardy * @handle: chain handle 93196518518SPatrick McHardy * @use: number of jump references to this chain 932a0a7379eSPablo Neira Ayuso * @flags: bitmask of enum nft_chain_flags 93396518518SPatrick McHardy * @name: name of the chain 93496518518SPatrick McHardy */ 93596518518SPatrick McHardy struct nft_chain { 9360cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_0; 9370cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_1; 93896518518SPatrick McHardy struct list_head rules; 93996518518SPatrick McHardy struct list_head list; 9401b2470e5SFlorian Westphal struct rhlist_head rhlhead; 941b5bc89bfSPablo Neira Ayuso struct nft_table *table; 94296518518SPatrick McHardy u64 handle; 943a0a7379eSPablo Neira Ayuso u32 use; 944d0e2c7deSPablo Neira Ayuso u8 flags:5, 945d0e2c7deSPablo Neira Ayuso bound:1, 946664b0f8cSPablo Neira Ayuso genmask:2; 947b7263e07SPhil Sutter char *name; 948002f2176SJose M. Guisado Gomez u16 udlen; 949002f2176SJose M. Guisado Gomez u8 *udata; 9500cbc06b3SFlorian Westphal 9510cbc06b3SFlorian Westphal /* Only used during control plane commit phase: */ 9520cbc06b3SFlorian Westphal struct nft_rule **rules_next; 95396518518SPatrick McHardy }; 95496518518SPatrick McHardy 955a654de8fSPablo Neira Ayuso int nft_chain_validate(const struct nft_ctx *ctx, const struct nft_chain *chain); 956a654de8fSPablo Neira Ayuso 95732537e91SPablo Neira Ayuso enum nft_chain_types { 9589370761cSPablo Neira Ayuso NFT_CHAIN_T_DEFAULT = 0, 9599370761cSPablo Neira Ayuso NFT_CHAIN_T_ROUTE, 9609370761cSPablo Neira Ayuso NFT_CHAIN_T_NAT, 9619370761cSPablo Neira Ayuso NFT_CHAIN_T_MAX 9629370761cSPablo Neira Ayuso }; 9639370761cSPablo Neira Ayuso 9641a1e1a12SPatrick McHardy /** 96532537e91SPablo Neira Ayuso * struct nft_chain_type - nf_tables chain type info 9661a1e1a12SPatrick McHardy * 9671a1e1a12SPatrick McHardy * @name: name of the type 9681a1e1a12SPatrick McHardy * @type: numeric identifier 9691a1e1a12SPatrick McHardy * @family: address family 9701a1e1a12SPatrick McHardy * @owner: module owner 9711a1e1a12SPatrick McHardy * @hook_mask: mask of valid hooks 972c2f9eafeSPablo Neira Ayuso * @hooks: array of hook functions 9734e25ceb8SFlorian Westphal * @ops_register: base chain register function 9744e25ceb8SFlorian Westphal * @ops_unregister: base chain unregister function 9751a1e1a12SPatrick McHardy */ 97632537e91SPablo Neira Ayuso struct nft_chain_type { 9771a1e1a12SPatrick McHardy const char *name; 97832537e91SPablo Neira Ayuso enum nft_chain_types type; 9791a1e1a12SPatrick McHardy int family; 9801a1e1a12SPatrick McHardy struct module *owner; 9811a1e1a12SPatrick McHardy unsigned int hook_mask; 9821a1e1a12SPatrick McHardy nf_hookfn *hooks[NF_MAX_HOOKS]; 9834e25ceb8SFlorian Westphal int (*ops_register)(struct net *net, const struct nf_hook_ops *ops); 9844e25ceb8SFlorian Westphal void (*ops_unregister)(struct net *net, const struct nf_hook_ops *ops); 9851a1e1a12SPatrick McHardy }; 9861a1e1a12SPatrick McHardy 9877210e4e3SPablo Neira Ayuso int nft_chain_validate_dependency(const struct nft_chain *chain, 98832537e91SPablo Neira Ayuso enum nft_chain_types type); 98975e8d06dSPablo Neira Ayuso int nft_chain_validate_hooks(const struct nft_chain *chain, 99075e8d06dSPablo Neira Ayuso unsigned int hook_flags); 9917210e4e3SPablo Neira Ayuso 992d0e2c7deSPablo Neira Ayuso static inline bool nft_chain_is_bound(struct nft_chain *chain) 993d0e2c7deSPablo Neira Ayuso { 994d0e2c7deSPablo Neira Ayuso return (chain->flags & NFT_CHAIN_BINDING) && chain->bound; 995d0e2c7deSPablo Neira Ayuso } 996d0e2c7deSPablo Neira Ayuso 997d0e2c7deSPablo Neira Ayuso void nft_chain_del(struct nft_chain *chain); 998d0e2c7deSPablo Neira Ayuso void nf_tables_chain_destroy(struct nft_ctx *ctx); 999d0e2c7deSPablo Neira Ayuso 10000ca743a5SPablo Neira Ayuso struct nft_stats { 10010ca743a5SPablo Neira Ayuso u64 bytes; 10020ca743a5SPablo Neira Ayuso u64 pkts; 1003ce355e20SEric Dumazet struct u64_stats_sync syncp; 10040ca743a5SPablo Neira Ayuso }; 10050ca743a5SPablo Neira Ayuso 10063f0465a9SPablo Neira Ayuso struct nft_hook { 10073f0465a9SPablo Neira Ayuso struct list_head list; 1008abadb2f8SPablo Neira Ayuso bool inactive; 10093f0465a9SPablo Neira Ayuso struct nf_hook_ops ops; 10103f0465a9SPablo Neira Ayuso struct rcu_head rcu; 10113f0465a9SPablo Neira Ayuso }; 10123f0465a9SPablo Neira Ayuso 101396518518SPatrick McHardy /** 101496518518SPatrick McHardy * struct nft_base_chain - nf_tables base chain 101596518518SPatrick McHardy * 101696518518SPatrick McHardy * @ops: netfilter hook ops 1017d54725cdSPablo Neira Ayuso * @hook_list: list of netfilter hooks (for NFPROTO_NETDEV family) 10189370761cSPablo Neira Ayuso * @type: chain type 10190ca743a5SPablo Neira Ayuso * @policy: default policy 10200ca743a5SPablo Neira Ayuso * @stats: per-cpu chain stats 102196518518SPatrick McHardy * @chain: the chain 102214bfb13fSPablo Neira Ayuso * @flow_block: flow block (for hardware offload) 102396518518SPatrick McHardy */ 102496518518SPatrick McHardy struct nft_base_chain { 1025c974a3a3SPablo Neira Ayuso struct nf_hook_ops ops; 1026d54725cdSPablo Neira Ayuso struct list_head hook_list; 102732537e91SPablo Neira Ayuso const struct nft_chain_type *type; 10280ca743a5SPablo Neira Ayuso u8 policy; 1029835b8033SPablo Neira Ayuso u8 flags; 10300ca743a5SPablo Neira Ayuso struct nft_stats __percpu *stats; 103196518518SPatrick McHardy struct nft_chain chain; 103214bfb13fSPablo Neira Ayuso struct flow_block flow_block; 103396518518SPatrick McHardy }; 103496518518SPatrick McHardy 103596518518SPatrick McHardy static inline struct nft_base_chain *nft_base_chain(const struct nft_chain *chain) 103696518518SPatrick McHardy { 103796518518SPatrick McHardy return container_of(chain, struct nft_base_chain, chain); 103896518518SPatrick McHardy } 103996518518SPatrick McHardy 1040f323d954SPablo Neira Ayuso static inline bool nft_is_base_chain(const struct nft_chain *chain) 1041f323d954SPablo Neira Ayuso { 104267c49de4SPablo Neira Ayuso return chain->flags & NFT_CHAIN_BASE; 1043f323d954SPablo Neira Ayuso } 1044f323d954SPablo Neira Ayuso 10455ebe0b0eSPablo Neira Ayuso int __nft_release_basechain(struct nft_ctx *ctx); 1046835b8033SPablo Neira Ayuso 104706198b34SEric W. Biederman unsigned int nft_do_chain(struct nft_pktinfo *pkt, void *priv); 104896518518SPatrick McHardy 104996518518SPatrick McHardy /** 105096518518SPatrick McHardy * struct nft_table - nf_tables table 105196518518SPatrick McHardy * 105296518518SPatrick McHardy * @list: used internally 10531b2470e5SFlorian Westphal * @chains_ht: chains in the table 10541b2470e5SFlorian Westphal * @chains: same, for stable walks 105596518518SPatrick McHardy * @sets: sets in the table 1056e5009240SPablo Neira Ayuso * @objects: stateful objects in the table 10573b49e2e9SPablo Neira Ayuso * @flowtables: flow tables in the table 105896518518SPatrick McHardy * @hgenerator: handle generator state 10593ecbfd65SHarsha Sharma * @handle: table handle 106096518518SPatrick McHardy * @use: number of chain references to this table 106196518518SPatrick McHardy * @flags: table flag (see enum nft_table_flags) 1062f2a6d766SPablo Neira Ayuso * @genmask: generation mask 106336596dadSPablo Neira Ayuso * @afinfo: address family info 106496518518SPatrick McHardy * @name: name of the table 106596518518SPatrick McHardy */ 106696518518SPatrick McHardy struct nft_table { 106796518518SPatrick McHardy struct list_head list; 10681b2470e5SFlorian Westphal struct rhltable chains_ht; 106996518518SPatrick McHardy struct list_head chains; 107096518518SPatrick McHardy struct list_head sets; 1071e5009240SPablo Neira Ayuso struct list_head objects; 10723b49e2e9SPablo Neira Ayuso struct list_head flowtables; 107396518518SPatrick McHardy u64 hgenerator; 10743ecbfd65SHarsha Sharma u64 handle; 107596518518SPatrick McHardy u32 use; 107698319cb9SPablo Neira Ayuso u16 family:6, 107798319cb9SPablo Neira Ayuso flags:8, 1078f2a6d766SPablo Neira Ayuso genmask:2; 1079e46abbccSPhil Sutter char *name; 10807a81575bSJose M. Guisado Gomez u16 udlen; 10817a81575bSJose M. Guisado Gomez u8 *udata; 1082ebddf1a8SPablo Neira Ayuso }; 1083ebddf1a8SPablo Neira Ayuso 1084cc07eeb0SPablo Neira Ayuso void nft_register_chain_type(const struct nft_chain_type *); 108532537e91SPablo Neira Ayuso void nft_unregister_chain_type(const struct nft_chain_type *); 108696518518SPatrick McHardy 10875eccdfaaSJoe Perches int nft_register_expr(struct nft_expr_type *); 10885eccdfaaSJoe Perches void nft_unregister_expr(struct nft_expr_type *); 108996518518SPatrick McHardy 109033d5a7b1SFlorian Westphal int nft_verdict_dump(struct sk_buff *skb, int type, 109133d5a7b1SFlorian Westphal const struct nft_verdict *v); 109233d5a7b1SFlorian Westphal 109333d5a7b1SFlorian Westphal /** 1094d152159bSFlorian Westphal * struct nft_object_hash_key - key to lookup nft_object 1095d152159bSFlorian Westphal * 1096d152159bSFlorian Westphal * @name: name of the stateful object to look up 1097d152159bSFlorian Westphal * @table: table the object belongs to 1098d152159bSFlorian Westphal */ 1099d152159bSFlorian Westphal struct nft_object_hash_key { 1100d152159bSFlorian Westphal const char *name; 1101d152159bSFlorian Westphal const struct nft_table *table; 1102d152159bSFlorian Westphal }; 1103d152159bSFlorian Westphal 1104d152159bSFlorian Westphal /** 1105e5009240SPablo Neira Ayuso * struct nft_object - nf_tables stateful object 1106e5009240SPablo Neira Ayuso * 1107e5009240SPablo Neira Ayuso * @list: table stateful object list node 1108d152159bSFlorian Westphal * @key: keys that identify this object 11094d44175aSFlorian Westphal * @rhlhead: nft_objname_ht node 1110e5009240SPablo Neira Ayuso * @genmask: generation mask 1111e5009240SPablo Neira Ayuso * @use: number of references to this stateful object 11123ecbfd65SHarsha Sharma * @handle: unique object handle 1113dfc46034SPablo M. Bermudo Garay * @ops: object operations 11143ecbfd65SHarsha Sharma * @data: object data, layout depends on type 1115e5009240SPablo Neira Ayuso */ 1116e5009240SPablo Neira Ayuso struct nft_object { 1117e5009240SPablo Neira Ayuso struct list_head list; 11184d44175aSFlorian Westphal struct rhlist_head rhlhead; 1119d152159bSFlorian Westphal struct nft_object_hash_key key; 1120e5009240SPablo Neira Ayuso u32 genmask:2, 1121e5009240SPablo Neira Ayuso use:30; 11223ecbfd65SHarsha Sharma u64 handle; 1123b131c964SJose M. Guisado Gomez u16 udlen; 1124b131c964SJose M. Guisado Gomez u8 *udata; 1125e5009240SPablo Neira Ayuso /* runtime data below here */ 1126dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops ____cacheline_aligned; 1127e5009240SPablo Neira Ayuso unsigned char data[] 1128e5009240SPablo Neira Ayuso __attribute__((aligned(__alignof__(u64)))); 1129e5009240SPablo Neira Ayuso }; 1130e5009240SPablo Neira Ayuso 1131e5009240SPablo Neira Ayuso static inline void *nft_obj_data(const struct nft_object *obj) 1132e5009240SPablo Neira Ayuso { 1133e5009240SPablo Neira Ayuso return (void *)obj->data; 1134e5009240SPablo Neira Ayuso } 1135e5009240SPablo Neira Ayuso 1136e5009240SPablo Neira Ayuso #define nft_expr_obj(expr) *((struct nft_object **)nft_expr_priv(expr)) 1137e5009240SPablo Neira Ayuso 11384d44175aSFlorian Westphal struct nft_object *nft_obj_lookup(const struct net *net, 11394d44175aSFlorian Westphal const struct nft_table *table, 1140e5009240SPablo Neira Ayuso const struct nlattr *nla, u32 objtype, 1141e5009240SPablo Neira Ayuso u8 genmask); 1142e5009240SPablo Neira Ayuso 1143d152159bSFlorian Westphal void nft_obj_notify(struct net *net, const struct nft_table *table, 11442599e989SPablo Neira Ayuso struct nft_object *obj, u32 portid, u32 seq, 11452599e989SPablo Neira Ayuso int event, int family, int report, gfp_t gfp); 11462599e989SPablo Neira Ayuso 1147e5009240SPablo Neira Ayuso /** 1148e5009240SPablo Neira Ayuso * struct nft_object_type - stateful object type 1149e5009240SPablo Neira Ayuso * 1150dfc46034SPablo M. Bermudo Garay * @select_ops: function to select nft_object_ops 1151dfc46034SPablo M. Bermudo Garay * @ops: default ops, used when no select_ops functions is present 1152e5009240SPablo Neira Ayuso * @list: list node in list of object types 1153e5009240SPablo Neira Ayuso * @type: stateful object numeric type 1154e5009240SPablo Neira Ayuso * @owner: module owner 1155e5009240SPablo Neira Ayuso * @maxattr: maximum netlink attribute 1156e5009240SPablo Neira Ayuso * @policy: netlink attribute policy 1157dfc46034SPablo M. Bermudo Garay */ 1158dfc46034SPablo M. Bermudo Garay struct nft_object_type { 1159dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *(*select_ops)(const struct nft_ctx *, 1160dfc46034SPablo M. Bermudo Garay const struct nlattr * const tb[]); 1161dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops; 1162dfc46034SPablo M. Bermudo Garay struct list_head list; 1163dfc46034SPablo M. Bermudo Garay u32 type; 1164dfc46034SPablo M. Bermudo Garay unsigned int maxattr; 1165dfc46034SPablo M. Bermudo Garay struct module *owner; 1166dfc46034SPablo M. Bermudo Garay const struct nla_policy *policy; 1167dfc46034SPablo M. Bermudo Garay }; 1168dfc46034SPablo M. Bermudo Garay 1169dfc46034SPablo M. Bermudo Garay /** 1170dfc46034SPablo M. Bermudo Garay * struct nft_object_ops - stateful object operations 1171dfc46034SPablo M. Bermudo Garay * 1172dfc46034SPablo M. Bermudo Garay * @eval: stateful object evaluation function 1173dfc46034SPablo M. Bermudo Garay * @size: stateful object size 1174e5009240SPablo Neira Ayuso * @init: initialize object from netlink attributes 1175e5009240SPablo Neira Ayuso * @destroy: release existing stateful object 1176e5009240SPablo Neira Ayuso * @dump: netlink dump stateful object 1177d62d0ba9SFernando Fernandez Mancera * @update: update stateful object 1178e5009240SPablo Neira Ayuso */ 1179dfc46034SPablo M. Bermudo Garay struct nft_object_ops { 1180e5009240SPablo Neira Ayuso void (*eval)(struct nft_object *obj, 1181e5009240SPablo Neira Ayuso struct nft_regs *regs, 1182e5009240SPablo Neira Ayuso const struct nft_pktinfo *pkt); 1183e5009240SPablo Neira Ayuso unsigned int size; 118484fba055SFlorian Westphal int (*init)(const struct nft_ctx *ctx, 118584fba055SFlorian Westphal const struct nlattr *const tb[], 1186e5009240SPablo Neira Ayuso struct nft_object *obj); 118700bfb320SPablo Neira Ayuso void (*destroy)(const struct nft_ctx *ctx, 118800bfb320SPablo Neira Ayuso struct nft_object *obj); 1189e5009240SPablo Neira Ayuso int (*dump)(struct sk_buff *skb, 119043da04a5SPablo Neira Ayuso struct nft_object *obj, 119143da04a5SPablo Neira Ayuso bool reset); 1192d62d0ba9SFernando Fernandez Mancera void (*update)(struct nft_object *obj, 1193d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj); 1194dfc46034SPablo M. Bermudo Garay const struct nft_object_type *type; 1195e5009240SPablo Neira Ayuso }; 1196e5009240SPablo Neira Ayuso 1197e5009240SPablo Neira Ayuso int nft_register_obj(struct nft_object_type *obj_type); 1198e5009240SPablo Neira Ayuso void nft_unregister_obj(struct nft_object_type *obj_type); 1199e5009240SPablo Neira Ayuso 1200cb662ac6SPablo Neira Ayuso #define NFT_NETDEVICE_MAX 256 1201d92191aaSPablo Neira Ayuso 1202e5009240SPablo Neira Ayuso /** 12033b49e2e9SPablo Neira Ayuso * struct nft_flowtable - nf_tables flow table 12043b49e2e9SPablo Neira Ayuso * 12053b49e2e9SPablo Neira Ayuso * @list: flow table list node in table list 12063b49e2e9SPablo Neira Ayuso * @table: the table the flow table is contained in 12073b49e2e9SPablo Neira Ayuso * @name: name of this flow table 12083b49e2e9SPablo Neira Ayuso * @hooknum: hook number 12093b49e2e9SPablo Neira Ayuso * @ops_len: number of hooks in array 12103b49e2e9SPablo Neira Ayuso * @genmask: generation mask 12113b49e2e9SPablo Neira Ayuso * @use: number of references to this flow table 12123ecbfd65SHarsha Sharma * @handle: unique object handle 1213d92191aaSPablo Neira Ayuso * @dev_name: array of device names 12143b49e2e9SPablo Neira Ayuso * @data: rhashtable and garbage collector 12153b49e2e9SPablo Neira Ayuso * @ops: array of hooks 12163b49e2e9SPablo Neira Ayuso */ 12173b49e2e9SPablo Neira Ayuso struct nft_flowtable { 12183b49e2e9SPablo Neira Ayuso struct list_head list; 12193b49e2e9SPablo Neira Ayuso struct nft_table *table; 12203b49e2e9SPablo Neira Ayuso char *name; 12213b49e2e9SPablo Neira Ayuso int hooknum; 12223b49e2e9SPablo Neira Ayuso int ops_len; 12233b49e2e9SPablo Neira Ayuso u32 genmask:2, 12243b49e2e9SPablo Neira Ayuso use:30; 12253ecbfd65SHarsha Sharma u64 handle; 12263b49e2e9SPablo Neira Ayuso /* runtime data below here */ 12273f0465a9SPablo Neira Ayuso struct list_head hook_list ____cacheline_aligned; 12283b49e2e9SPablo Neira Ayuso struct nf_flowtable data; 12293b49e2e9SPablo Neira Ayuso }; 12303b49e2e9SPablo Neira Ayuso 1231cac20fcdSPablo Neira Ayuso struct nft_flowtable *nft_flowtable_lookup(const struct nft_table *table, 12323b49e2e9SPablo Neira Ayuso const struct nlattr *nla, 12333b49e2e9SPablo Neira Ayuso u8 genmask); 12343b49e2e9SPablo Neira Ayuso 12359b05b6e1SLaura Garcia Liebana void nf_tables_deactivate_flowtable(const struct nft_ctx *ctx, 12369b05b6e1SLaura Garcia Liebana struct nft_flowtable *flowtable, 12379b05b6e1SLaura Garcia Liebana enum nft_trans_phase phase); 12389b05b6e1SLaura Garcia Liebana 12393b49e2e9SPablo Neira Ayuso void nft_register_flowtable_type(struct nf_flowtable_type *type); 12403b49e2e9SPablo Neira Ayuso void nft_unregister_flowtable_type(struct nf_flowtable_type *type); 12413b49e2e9SPablo Neira Ayuso 12423b49e2e9SPablo Neira Ayuso /** 124333d5a7b1SFlorian Westphal * struct nft_traceinfo - nft tracing information and state 124433d5a7b1SFlorian Westphal * 124533d5a7b1SFlorian Westphal * @pkt: pktinfo currently processed 124633d5a7b1SFlorian Westphal * @basechain: base chain currently processed 124733d5a7b1SFlorian Westphal * @chain: chain currently processed 124833d5a7b1SFlorian Westphal * @rule: rule that was evaluated 124933d5a7b1SFlorian Westphal * @verdict: verdict given by rule 125033d5a7b1SFlorian Westphal * @type: event type (enum nft_trace_types) 125133d5a7b1SFlorian Westphal * @packet_dumped: packet headers sent in a previous traceinfo message 125233d5a7b1SFlorian Westphal * @trace: other struct members are initialised 125333d5a7b1SFlorian Westphal */ 125433d5a7b1SFlorian Westphal struct nft_traceinfo { 125533d5a7b1SFlorian Westphal const struct nft_pktinfo *pkt; 125633d5a7b1SFlorian Westphal const struct nft_base_chain *basechain; 125733d5a7b1SFlorian Westphal const struct nft_chain *chain; 125833d5a7b1SFlorian Westphal const struct nft_rule *rule; 125933d5a7b1SFlorian Westphal const struct nft_verdict *verdict; 126033d5a7b1SFlorian Westphal enum nft_trace_types type; 126133d5a7b1SFlorian Westphal bool packet_dumped; 126233d5a7b1SFlorian Westphal bool trace; 126333d5a7b1SFlorian Westphal }; 126433d5a7b1SFlorian Westphal 126533d5a7b1SFlorian Westphal void nft_trace_init(struct nft_traceinfo *info, const struct nft_pktinfo *pkt, 126633d5a7b1SFlorian Westphal const struct nft_verdict *verdict, 126733d5a7b1SFlorian Westphal const struct nft_chain *basechain); 126833d5a7b1SFlorian Westphal 126933d5a7b1SFlorian Westphal void nft_trace_notify(struct nft_traceinfo *info); 127033d5a7b1SFlorian Westphal 12719370761cSPablo Neira Ayuso #define MODULE_ALIAS_NFT_CHAIN(family, name) \ 12729370761cSPablo Neira Ayuso MODULE_ALIAS("nft-chain-" __stringify(family) "-" name) 127396518518SPatrick McHardy 127464d46806SPatrick McHardy #define MODULE_ALIAS_NFT_AF_EXPR(family, name) \ 127564d46806SPatrick McHardy MODULE_ALIAS("nft-expr-" __stringify(family) "-" name) 127664d46806SPatrick McHardy 127796518518SPatrick McHardy #define MODULE_ALIAS_NFT_EXPR(name) \ 127896518518SPatrick McHardy MODULE_ALIAS("nft-expr-" name) 127996518518SPatrick McHardy 1280e5009240SPablo Neira Ayuso #define MODULE_ALIAS_NFT_OBJ(type) \ 1281e5009240SPablo Neira Ayuso MODULE_ALIAS("nft-obj-" __stringify(type)) 1282e5009240SPablo Neira Ayuso 128347e640afSJeremy Sowden #if IS_ENABLED(CONFIG_NF_TABLES) 128447e640afSJeremy Sowden 1285ea4bd995SPatrick McHardy /* 1286ea4bd995SPatrick McHardy * The gencursor defines two generations, the currently active and the 1287ea4bd995SPatrick McHardy * next one. Objects contain a bitmask of 2 bits specifying the generations 1288ea4bd995SPatrick McHardy * they're active in. A set bit means they're inactive in the generation 1289ea4bd995SPatrick McHardy * represented by that bit. 1290ea4bd995SPatrick McHardy * 1291ea4bd995SPatrick McHardy * New objects start out as inactive in the current and active in the 1292ea4bd995SPatrick McHardy * next generation. When committing the ruleset the bitmask is cleared, 1293ea4bd995SPatrick McHardy * meaning they're active in all generations. When removing an object, 1294ea4bd995SPatrick McHardy * it is set inactive in the next generation. After committing the ruleset, 1295ea4bd995SPatrick McHardy * the objects are removed. 1296ea4bd995SPatrick McHardy */ 1297ea4bd995SPatrick McHardy static inline unsigned int nft_gencursor_next(const struct net *net) 1298ea4bd995SPatrick McHardy { 1299ea4bd995SPatrick McHardy return net->nft.gencursor + 1 == 1 ? 1 : 0; 1300ea4bd995SPatrick McHardy } 1301ea4bd995SPatrick McHardy 1302ea4bd995SPatrick McHardy static inline u8 nft_genmask_next(const struct net *net) 1303ea4bd995SPatrick McHardy { 1304ea4bd995SPatrick McHardy return 1 << nft_gencursor_next(net); 1305ea4bd995SPatrick McHardy } 1306ea4bd995SPatrick McHardy 1307ea4bd995SPatrick McHardy static inline u8 nft_genmask_cur(const struct net *net) 1308ea4bd995SPatrick McHardy { 130914cd5d4aSMark Rutland /* Use READ_ONCE() to prevent refetching the value for atomicity */ 131014cd5d4aSMark Rutland return 1 << READ_ONCE(net->nft.gencursor); 1311ea4bd995SPatrick McHardy } 1312ea4bd995SPatrick McHardy 131322fe54d5SPatrick McHardy #define NFT_GENMASK_ANY ((1 << 0) | (1 << 1)) 131422fe54d5SPatrick McHardy 1315cc02e457SPatrick McHardy /* 1316889f7ee7SPablo Neira Ayuso * Generic transaction helpers 1317889f7ee7SPablo Neira Ayuso */ 1318889f7ee7SPablo Neira Ayuso 1319889f7ee7SPablo Neira Ayuso /* Check if this object is currently active. */ 1320889f7ee7SPablo Neira Ayuso #define nft_is_active(__net, __obj) \ 1321889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_cur(__net)) == 0) 1322889f7ee7SPablo Neira Ayuso 1323889f7ee7SPablo Neira Ayuso /* Check if this object is active in the next generation. */ 1324889f7ee7SPablo Neira Ayuso #define nft_is_active_next(__net, __obj) \ 1325889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_next(__net)) == 0) 1326889f7ee7SPablo Neira Ayuso 1327889f7ee7SPablo Neira Ayuso /* This object becomes active in the next generation. */ 1328889f7ee7SPablo Neira Ayuso #define nft_activate_next(__net, __obj) \ 1329889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_cur(__net) 1330889f7ee7SPablo Neira Ayuso 1331889f7ee7SPablo Neira Ayuso /* This object becomes inactive in the next generation. */ 1332889f7ee7SPablo Neira Ayuso #define nft_deactivate_next(__net, __obj) \ 1333889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_next(__net) 1334889f7ee7SPablo Neira Ayuso 1335889f7ee7SPablo Neira Ayuso /* After committing the ruleset, clear the stale generation bit. */ 1336889f7ee7SPablo Neira Ayuso #define nft_clear(__net, __obj) \ 1337889f7ee7SPablo Neira Ayuso (__obj)->genmask &= ~nft_genmask_next(__net) 1338f2a6d766SPablo Neira Ayuso #define nft_active_genmask(__obj, __genmask) \ 1339f2a6d766SPablo Neira Ayuso !((__obj)->genmask & __genmask) 1340889f7ee7SPablo Neira Ayuso 1341889f7ee7SPablo Neira Ayuso /* 1342cc02e457SPatrick McHardy * Set element transaction helpers 1343cc02e457SPatrick McHardy */ 1344cc02e457SPatrick McHardy 1345cc02e457SPatrick McHardy static inline bool nft_set_elem_active(const struct nft_set_ext *ext, 1346cc02e457SPatrick McHardy u8 genmask) 1347cc02e457SPatrick McHardy { 1348cc02e457SPatrick McHardy return !(ext->genmask & genmask); 1349cc02e457SPatrick McHardy } 1350cc02e457SPatrick McHardy 135142a55769SPablo Neira Ayuso static inline void nft_set_elem_change_active(const struct net *net, 135242a55769SPablo Neira Ayuso const struct nft_set *set, 1353cc02e457SPatrick McHardy struct nft_set_ext *ext) 1354cc02e457SPatrick McHardy { 135542a55769SPablo Neira Ayuso ext->genmask ^= nft_genmask_next(net); 1356cc02e457SPatrick McHardy } 1357cc02e457SPatrick McHardy 135847e640afSJeremy Sowden #endif /* IS_ENABLED(CONFIG_NF_TABLES) */ 135947e640afSJeremy Sowden 136069086658SPatrick McHardy /* 136169086658SPatrick McHardy * We use a free bit in the genmask field to indicate the element 136269086658SPatrick McHardy * is busy, meaning it is currently being processed either by 136369086658SPatrick McHardy * the netlink API or GC. 136469086658SPatrick McHardy * 136569086658SPatrick McHardy * Even though the genmask is only a single byte wide, this works 136669086658SPatrick McHardy * because the extension structure if fully constant once initialized, 136769086658SPatrick McHardy * so there are no non-atomic write accesses unless it is already 136869086658SPatrick McHardy * marked busy. 136969086658SPatrick McHardy */ 137069086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_MASK (1 << 2) 137169086658SPatrick McHardy 137269086658SPatrick McHardy #if defined(__LITTLE_ENDIAN_BITFIELD) 137369086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT 2 137469086658SPatrick McHardy #elif defined(__BIG_ENDIAN_BITFIELD) 137569086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT (BITS_PER_LONG - BITS_PER_BYTE + 2) 137669086658SPatrick McHardy #else 137769086658SPatrick McHardy #error 137869086658SPatrick McHardy #endif 137969086658SPatrick McHardy 138069086658SPatrick McHardy static inline int nft_set_elem_mark_busy(struct nft_set_ext *ext) 138169086658SPatrick McHardy { 138269086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 138369086658SPatrick McHardy 138469086658SPatrick McHardy BUILD_BUG_ON(offsetof(struct nft_set_ext, genmask) != 0); 138569086658SPatrick McHardy return test_and_set_bit(NFT_SET_ELEM_BUSY_BIT, word); 138669086658SPatrick McHardy } 138769086658SPatrick McHardy 138869086658SPatrick McHardy static inline void nft_set_elem_clear_busy(struct nft_set_ext *ext) 138969086658SPatrick McHardy { 139069086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 139169086658SPatrick McHardy 139269086658SPatrick McHardy clear_bit(NFT_SET_ELEM_BUSY_BIT, word); 139369086658SPatrick McHardy } 139469086658SPatrick McHardy 13951a1e1a12SPatrick McHardy /** 13961a1e1a12SPatrick McHardy * struct nft_trans - nf_tables object update in transaction 13971a1e1a12SPatrick McHardy * 13981a1e1a12SPatrick McHardy * @list: used internally 13991a1e1a12SPatrick McHardy * @msg_type: message type 14000935d558SFlorian Westphal * @put_net: ctx->net needs to be put 14011a1e1a12SPatrick McHardy * @ctx: transaction context 14021a1e1a12SPatrick McHardy * @data: internal information related to the transaction 14031a1e1a12SPatrick McHardy */ 14041a1e1a12SPatrick McHardy struct nft_trans { 14051a1e1a12SPatrick McHardy struct list_head list; 14061a1e1a12SPatrick McHardy int msg_type; 14070935d558SFlorian Westphal bool put_net; 14081a1e1a12SPatrick McHardy struct nft_ctx ctx; 14096daf1414SGustavo A. R. Silva char data[]; 14101a1e1a12SPatrick McHardy }; 14111a1e1a12SPatrick McHardy 14121a1e1a12SPatrick McHardy struct nft_trans_rule { 14131a1e1a12SPatrick McHardy struct nft_rule *rule; 1414c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow; 14151a94e38dSPablo Neira Ayuso u32 rule_id; 14161a1e1a12SPatrick McHardy }; 14171a1e1a12SPatrick McHardy 14181a1e1a12SPatrick McHardy #define nft_trans_rule(trans) \ 14191a1e1a12SPatrick McHardy (((struct nft_trans_rule *)trans->data)->rule) 1420c9626a2cSPablo Neira Ayuso #define nft_trans_flow_rule(trans) \ 1421c9626a2cSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->flow) 14221a94e38dSPablo Neira Ayuso #define nft_trans_rule_id(trans) \ 14231a94e38dSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->rule_id) 14241a1e1a12SPatrick McHardy 14251a1e1a12SPatrick McHardy struct nft_trans_set { 14261a1e1a12SPatrick McHardy struct nft_set *set; 14271a1e1a12SPatrick McHardy u32 set_id; 14286a0a8d10SPablo Neira Ayuso bool bound; 14291a1e1a12SPatrick McHardy }; 14301a1e1a12SPatrick McHardy 14311a1e1a12SPatrick McHardy #define nft_trans_set(trans) \ 14321a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set) 14331a1e1a12SPatrick McHardy #define nft_trans_set_id(trans) \ 14341a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set_id) 14356a0a8d10SPablo Neira Ayuso #define nft_trans_set_bound(trans) \ 14366a0a8d10SPablo Neira Ayuso (((struct nft_trans_set *)trans->data)->bound) 14371a1e1a12SPatrick McHardy 14381a1e1a12SPatrick McHardy struct nft_trans_chain { 14391a1e1a12SPatrick McHardy bool update; 1440b7263e07SPhil Sutter char *name; 14411a1e1a12SPatrick McHardy struct nft_stats __percpu *stats; 14421a1e1a12SPatrick McHardy u8 policy; 144374cccc3dSPablo Neira Ayuso u32 chain_id; 14441a1e1a12SPatrick McHardy }; 14451a1e1a12SPatrick McHardy 14461a1e1a12SPatrick McHardy #define nft_trans_chain_update(trans) \ 14471a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->update) 14481a1e1a12SPatrick McHardy #define nft_trans_chain_name(trans) \ 14491a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->name) 14501a1e1a12SPatrick McHardy #define nft_trans_chain_stats(trans) \ 14511a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->stats) 14521a1e1a12SPatrick McHardy #define nft_trans_chain_policy(trans) \ 14531a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->policy) 145474cccc3dSPablo Neira Ayuso #define nft_trans_chain_id(trans) \ 145574cccc3dSPablo Neira Ayuso (((struct nft_trans_chain *)trans->data)->chain_id) 14561a1e1a12SPatrick McHardy 14571a1e1a12SPatrick McHardy struct nft_trans_table { 14581a1e1a12SPatrick McHardy bool update; 14591a1e1a12SPatrick McHardy bool enable; 14601a1e1a12SPatrick McHardy }; 14611a1e1a12SPatrick McHardy 14621a1e1a12SPatrick McHardy #define nft_trans_table_update(trans) \ 14631a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->update) 14641a1e1a12SPatrick McHardy #define nft_trans_table_enable(trans) \ 14651a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->enable) 14661a1e1a12SPatrick McHardy 14671a1e1a12SPatrick McHardy struct nft_trans_elem { 14681a1e1a12SPatrick McHardy struct nft_set *set; 14691a1e1a12SPatrick McHardy struct nft_set_elem elem; 14706a0a8d10SPablo Neira Ayuso bool bound; 14711a1e1a12SPatrick McHardy }; 14721a1e1a12SPatrick McHardy 14731a1e1a12SPatrick McHardy #define nft_trans_elem_set(trans) \ 14741a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->set) 14751a1e1a12SPatrick McHardy #define nft_trans_elem(trans) \ 14761a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->elem) 14776a0a8d10SPablo Neira Ayuso #define nft_trans_elem_set_bound(trans) \ 14786a0a8d10SPablo Neira Ayuso (((struct nft_trans_elem *)trans->data)->bound) 14791a1e1a12SPatrick McHardy 1480e5009240SPablo Neira Ayuso struct nft_trans_obj { 1481e5009240SPablo Neira Ayuso struct nft_object *obj; 1482d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj; 1483d62d0ba9SFernando Fernandez Mancera bool update; 1484e5009240SPablo Neira Ayuso }; 1485e5009240SPablo Neira Ayuso 1486e5009240SPablo Neira Ayuso #define nft_trans_obj(trans) \ 1487e5009240SPablo Neira Ayuso (((struct nft_trans_obj *)trans->data)->obj) 1488d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_newobj(trans) \ 1489d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->newobj) 1490d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_update(trans) \ 1491d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->update) 1492e5009240SPablo Neira Ayuso 14933b49e2e9SPablo Neira Ayuso struct nft_trans_flowtable { 14943b49e2e9SPablo Neira Ayuso struct nft_flowtable *flowtable; 149578d9f48fSPablo Neira Ayuso bool update; 149678d9f48fSPablo Neira Ayuso struct list_head hook_list; 14973b49e2e9SPablo Neira Ayuso }; 14983b49e2e9SPablo Neira Ayuso 14993b49e2e9SPablo Neira Ayuso #define nft_trans_flowtable(trans) \ 15003b49e2e9SPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->flowtable) 150178d9f48fSPablo Neira Ayuso #define nft_trans_flowtable_update(trans) \ 150278d9f48fSPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->update) 150378d9f48fSPablo Neira Ayuso #define nft_trans_flowtable_hooks(trans) \ 150478d9f48fSPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->hook_list) 15053b49e2e9SPablo Neira Ayuso 150602c7b25eSPablo Neira Ayuso int __init nft_chain_filter_init(void); 1507d209df3eSFlorian Westphal void nft_chain_filter_fini(void); 150802c7b25eSPablo Neira Ayuso 1509c1deb065SFlorian Westphal void __init nft_chain_route_init(void); 1510c1deb065SFlorian Westphal void nft_chain_route_fini(void); 1511ffe8923fSFlorian Westphal 1512ffe8923fSFlorian Westphal void nf_tables_trans_destroy_flush_work(void); 151396518518SPatrick McHardy #endif /* _NET_NF_TABLES_H */ 1514