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 17d25e2e93SPablo Neira Ayuso #define NFT_MAX_HOOKS (NF_INET_INGRESS + 1) 18d25e2e93SPablo Neira Ayuso 19a4cb98f3SPaul Gortmaker struct module; 20a4cb98f3SPaul Gortmaker 2120a69341SPatrick McHardy #define NFT_JUMP_STACK_SIZE 16 2220a69341SPatrick McHardy 2396518518SPatrick McHardy struct nft_pktinfo { 2496518518SPatrick McHardy struct sk_buff *skb; 25beac5afaSPablo Neira Ayuso bool tprot_set; 264566bf27SPatrick McHardy u8 tprot; 270ca743a5SPablo Neira Ayuso /* for x_tables compatibility */ 280ca743a5SPablo Neira Ayuso struct xt_action_param xt; 2996518518SPatrick McHardy }; 3096518518SPatrick McHardy 310e5a1c7eSPablo Neira Ayuso static inline struct net *nft_net(const struct nft_pktinfo *pkt) 320e5a1c7eSPablo Neira Ayuso { 330e5a1c7eSPablo Neira Ayuso return pkt->xt.state->net; 340e5a1c7eSPablo Neira Ayuso } 350e5a1c7eSPablo Neira Ayuso 360e5a1c7eSPablo Neira Ayuso static inline unsigned int nft_hook(const struct nft_pktinfo *pkt) 370e5a1c7eSPablo Neira Ayuso { 380e5a1c7eSPablo Neira Ayuso return pkt->xt.state->hook; 390e5a1c7eSPablo Neira Ayuso } 400e5a1c7eSPablo Neira Ayuso 410e5a1c7eSPablo Neira Ayuso static inline u8 nft_pf(const struct nft_pktinfo *pkt) 420e5a1c7eSPablo Neira Ayuso { 430e5a1c7eSPablo Neira Ayuso return pkt->xt.state->pf; 440e5a1c7eSPablo Neira Ayuso } 450e5a1c7eSPablo Neira Ayuso 460e5a1c7eSPablo Neira Ayuso static inline const struct net_device *nft_in(const struct nft_pktinfo *pkt) 470e5a1c7eSPablo Neira Ayuso { 480e5a1c7eSPablo Neira Ayuso return pkt->xt.state->in; 490e5a1c7eSPablo Neira Ayuso } 500e5a1c7eSPablo Neira Ayuso 510e5a1c7eSPablo Neira Ayuso static inline const struct net_device *nft_out(const struct nft_pktinfo *pkt) 520e5a1c7eSPablo Neira Ayuso { 530e5a1c7eSPablo Neira Ayuso return pkt->xt.state->out; 540e5a1c7eSPablo Neira Ayuso } 550e5a1c7eSPablo Neira Ayuso 560ca743a5SPablo Neira Ayuso static inline void nft_set_pktinfo(struct nft_pktinfo *pkt, 570ca743a5SPablo Neira Ayuso struct sk_buff *skb, 58073bfd56SDavid S. Miller const struct nf_hook_state *state) 590ca743a5SPablo Neira Ayuso { 600ca743a5SPablo Neira Ayuso pkt->skb = skb; 61613dbd95SPablo Neira Ayuso pkt->xt.state = state; 620ca743a5SPablo Neira Ayuso } 630ca743a5SPablo Neira Ayuso 647a4473a3SPablo Neira Ayuso static inline void nft_set_pktinfo_unspec(struct nft_pktinfo *pkt, 65beac5afaSPablo Neira Ayuso struct sk_buff *skb) 66beac5afaSPablo Neira Ayuso { 67beac5afaSPablo Neira Ayuso pkt->tprot_set = false; 68beac5afaSPablo Neira Ayuso pkt->tprot = 0; 69beac5afaSPablo Neira Ayuso pkt->xt.thoff = 0; 70beac5afaSPablo Neira Ayuso pkt->xt.fragoff = 0; 71beac5afaSPablo Neira Ayuso } 72beac5afaSPablo Neira Ayuso 73a55e22e9SPatrick McHardy /** 74a55e22e9SPatrick McHardy * struct nft_verdict - nf_tables verdict 75a55e22e9SPatrick McHardy * 76a55e22e9SPatrick McHardy * @code: nf_tables/netfilter verdict code 77a55e22e9SPatrick McHardy * @chain: destination chain for NFT_JUMP/NFT_GOTO 78a55e22e9SPatrick McHardy */ 79a55e22e9SPatrick McHardy struct nft_verdict { 80a55e22e9SPatrick McHardy u32 code; 81a55e22e9SPatrick McHardy struct nft_chain *chain; 82a55e22e9SPatrick McHardy }; 83a55e22e9SPatrick McHardy 8496518518SPatrick McHardy struct nft_data { 8596518518SPatrick McHardy union { 8696518518SPatrick McHardy u32 data[4]; 871ca2e170SPatrick McHardy struct nft_verdict verdict; 8896518518SPatrick McHardy }; 8996518518SPatrick McHardy } __attribute__((aligned(__alignof__(u64)))); 9096518518SPatrick McHardy 91a55e22e9SPatrick McHardy /** 92a55e22e9SPatrick McHardy * struct nft_regs - nf_tables register set 93a55e22e9SPatrick McHardy * 94a55e22e9SPatrick McHardy * @data: data registers 95a55e22e9SPatrick McHardy * @verdict: verdict register 96a55e22e9SPatrick McHardy * 97a55e22e9SPatrick McHardy * The first four data registers alias to the verdict register. 98a55e22e9SPatrick McHardy */ 99a55e22e9SPatrick McHardy struct nft_regs { 100a55e22e9SPatrick McHardy union { 10149499c3eSPatrick McHardy u32 data[20]; 102a55e22e9SPatrick McHardy struct nft_verdict verdict; 103a55e22e9SPatrick McHardy }; 104a55e22e9SPatrick McHardy }; 105a55e22e9SPatrick McHardy 106a1b840adSAnder Juaristi /* Store/load an u8, u16 or u64 integer to/from the u32 data register. 10710596608SLiping Zhang * 10810596608SLiping Zhang * Note, when using concatenations, register allocation happens at 32-bit 10910596608SLiping Zhang * level. So for store instruction, pad the rest part with zero to avoid 11010596608SLiping Zhang * garbage values. 11110596608SLiping Zhang */ 11210596608SLiping Zhang 11310596608SLiping Zhang static inline void nft_reg_store8(u32 *dreg, u8 val) 11410596608SLiping Zhang { 11510596608SLiping Zhang *dreg = 0; 11610596608SLiping Zhang *(u8 *)dreg = val; 11710596608SLiping Zhang } 11810596608SLiping Zhang 1197cd9a58dSPablo Neira Ayuso static inline u8 nft_reg_load8(const u32 *sreg) 120a1b840adSAnder Juaristi { 121a1b840adSAnder Juaristi return *(u8 *)sreg; 122a1b840adSAnder Juaristi } 123a1b840adSAnder Juaristi 124a1b840adSAnder Juaristi static inline void nft_reg_store16(u32 *dreg, u16 val) 125a1b840adSAnder Juaristi { 126a1b840adSAnder Juaristi *dreg = 0; 127a1b840adSAnder Juaristi *(u16 *)dreg = val; 128a1b840adSAnder Juaristi } 129a1b840adSAnder Juaristi 1307cd9a58dSPablo Neira Ayuso static inline u16 nft_reg_load16(const u32 *sreg) 13110596608SLiping Zhang { 13210596608SLiping Zhang return *(u16 *)sreg; 13310596608SLiping Zhang } 13410596608SLiping Zhang 135a1b840adSAnder Juaristi static inline void nft_reg_store64(u32 *dreg, u64 val) 13610596608SLiping Zhang { 137a1b840adSAnder Juaristi put_unaligned(val, (u64 *)dreg); 138a1b840adSAnder Juaristi } 139a1b840adSAnder Juaristi 1407cd9a58dSPablo Neira Ayuso static inline u64 nft_reg_load64(const u32 *sreg) 141a1b840adSAnder Juaristi { 142a1b840adSAnder Juaristi return get_unaligned((u64 *)sreg); 14310596608SLiping Zhang } 14410596608SLiping Zhang 14549499c3eSPatrick McHardy static inline void nft_data_copy(u32 *dst, const struct nft_data *src, 14649499c3eSPatrick McHardy unsigned int len) 14796518518SPatrick McHardy { 1481e105e6aSFlorian Westphal if (len % NFT_REG32_SIZE) 1491e105e6aSFlorian Westphal dst[len / NFT_REG32_SIZE] = 0; 15049499c3eSPatrick McHardy memcpy(dst, src, len); 15196518518SPatrick McHardy } 15296518518SPatrick McHardy 15396518518SPatrick McHardy /** 15420a69341SPatrick McHardy * struct nft_ctx - nf_tables rule/set context 15596518518SPatrick McHardy * 15699633ab2SPablo Neira Ayuso * @net: net namespace 15796518518SPatrick McHardy * @table: the table the chain is contained in 15896518518SPatrick McHardy * @chain: the chain the rule is contained in 1590ca743a5SPablo Neira Ayuso * @nla: netlink attributes 160128ad332SPablo Neira Ayuso * @portid: netlink portID of the original message 161128ad332SPablo Neira Ayuso * @seq: netlink sequence number 16236596dadSPablo Neira Ayuso * @family: protocol family 16326b2f552STaehee Yoo * @level: depth of the chains 164128ad332SPablo Neira Ayuso * @report: notify via unicast netlink message 16596518518SPatrick McHardy */ 16696518518SPatrick McHardy struct nft_ctx { 16799633ab2SPablo Neira Ayuso struct net *net; 1687c95f6d8SPablo Neira Ayuso struct nft_table *table; 1697c95f6d8SPablo Neira Ayuso struct nft_chain *chain; 1700ca743a5SPablo Neira Ayuso const struct nlattr * const *nla; 171128ad332SPablo Neira Ayuso u32 portid; 172128ad332SPablo Neira Ayuso u32 seq; 173c9626a2cSPablo Neira Ayuso u16 flags; 17436596dadSPablo Neira Ayuso u8 family; 17526b2f552STaehee Yoo u8 level; 176128ad332SPablo Neira Ayuso bool report; 17796518518SPatrick McHardy }; 17896518518SPatrick McHardy 17996518518SPatrick McHardy struct nft_data_desc { 18096518518SPatrick McHardy enum nft_data_types type; 18196518518SPatrick McHardy unsigned int len; 18296518518SPatrick McHardy }; 18396518518SPatrick McHardy 184d0a11fc3SPatrick McHardy int nft_data_init(const struct nft_ctx *ctx, 185d0a11fc3SPatrick McHardy struct nft_data *data, unsigned int size, 18696518518SPatrick McHardy struct nft_data_desc *desc, const struct nlattr *nla); 187bb7b40aeSPablo Neira Ayuso void nft_data_hold(const struct nft_data *data, enum nft_data_types type); 18859105446SPablo Neira Ayuso void nft_data_release(const struct nft_data *data, enum nft_data_types type); 1895eccdfaaSJoe Perches int nft_data_dump(struct sk_buff *skb, int attr, const struct nft_data *data, 19096518518SPatrick McHardy enum nft_data_types type, unsigned int len); 19196518518SPatrick McHardy 19296518518SPatrick McHardy static inline enum nft_data_types nft_dreg_to_type(enum nft_registers reg) 19396518518SPatrick McHardy { 19496518518SPatrick McHardy return reg == NFT_REG_VERDICT ? NFT_DATA_VERDICT : NFT_DATA_VALUE; 19596518518SPatrick McHardy } 19696518518SPatrick McHardy 19720a69341SPatrick McHardy static inline enum nft_registers nft_type_to_reg(enum nft_data_types type) 19820a69341SPatrick McHardy { 199bf798657SPablo Neira Ayuso return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1 * NFT_REG_SIZE / NFT_REG32_SIZE; 20020a69341SPatrick McHardy } 20120a69341SPatrick McHardy 202f1d505bbSJohn W. Linville int nft_parse_u32_check(const struct nlattr *attr, int max, u32 *dest); 203b1c96ed3SPatrick McHardy unsigned int nft_parse_register(const struct nlattr *attr); 204b1c96ed3SPatrick McHardy int nft_dump_register(struct sk_buff *skb, unsigned int attr, unsigned int reg); 205b1c96ed3SPatrick McHardy 206d07db988SPatrick McHardy int nft_validate_register_load(enum nft_registers reg, unsigned int len); 2071ec10212SPatrick McHardy int nft_validate_register_store(const struct nft_ctx *ctx, 2081ec10212SPatrick McHardy enum nft_registers reg, 20996518518SPatrick McHardy const struct nft_data *data, 21045d9bcdaSPatrick McHardy enum nft_data_types type, unsigned int len); 21196518518SPatrick McHardy 21286f1ec32SPatrick McHardy /** 21386f1ec32SPatrick McHardy * struct nft_userdata - user defined data associated with an object 21486f1ec32SPatrick McHardy * 21586f1ec32SPatrick McHardy * @len: length of the data 21686f1ec32SPatrick McHardy * @data: content 21786f1ec32SPatrick McHardy * 21886f1ec32SPatrick McHardy * The presence of user data is indicated in an object specific fashion, 21986f1ec32SPatrick McHardy * so a length of zero can't occur and the value "len" indicates data 22086f1ec32SPatrick McHardy * of length len + 1. 22186f1ec32SPatrick McHardy */ 22286f1ec32SPatrick McHardy struct nft_userdata { 22386f1ec32SPatrick McHardy u8 len; 2246daf1414SGustavo A. R. Silva unsigned char data[]; 22586f1ec32SPatrick McHardy }; 22686f1ec32SPatrick McHardy 22796518518SPatrick McHardy /** 22820a69341SPatrick McHardy * struct nft_set_elem - generic representation of set elements 22920a69341SPatrick McHardy * 23020a69341SPatrick McHardy * @key: element key 2317b225d0bSPablo Neira Ayuso * @key_end: closing element key 232fe2811ebSPatrick McHardy * @priv: element private data and extensions 23320a69341SPatrick McHardy */ 23420a69341SPatrick McHardy struct nft_set_elem { 2357d740264SPatrick McHardy union { 2367d740264SPatrick McHardy u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; 2377d740264SPatrick McHardy struct nft_data val; 2387d740264SPatrick McHardy } key; 2397b225d0bSPablo Neira Ayuso union { 2407b225d0bSPablo Neira Ayuso u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; 2417b225d0bSPablo Neira Ayuso struct nft_data val; 2427b225d0bSPablo Neira Ayuso } key_end; 243fdb9c405SPablo Neira Ayuso union { 244fdb9c405SPablo Neira Ayuso u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; 245fdb9c405SPablo Neira Ayuso struct nft_data val; 246fdb9c405SPablo Neira Ayuso } data; 247fe2811ebSPatrick McHardy void *priv; 24820a69341SPatrick McHardy }; 24920a69341SPatrick McHardy 25020a69341SPatrick McHardy struct nft_set; 25120a69341SPatrick McHardy struct nft_set_iter { 2528588ac09SPablo Neira Ayuso u8 genmask; 25320a69341SPatrick McHardy unsigned int count; 25420a69341SPatrick McHardy unsigned int skip; 25520a69341SPatrick McHardy int err; 25620a69341SPatrick McHardy int (*fn)(const struct nft_ctx *ctx, 257de70185dSPablo Neira Ayuso struct nft_set *set, 25820a69341SPatrick McHardy const struct nft_set_iter *iter, 259de70185dSPablo Neira Ayuso struct nft_set_elem *elem); 26020a69341SPatrick McHardy }; 26120a69341SPatrick McHardy 26220a69341SPatrick McHardy /** 263c50b960cSPatrick McHardy * struct nft_set_desc - description of set elements 264c50b960cSPatrick McHardy * 265c50b960cSPatrick McHardy * @klen: key length 266c50b960cSPatrick McHardy * @dlen: data length 267c50b960cSPatrick McHardy * @size: number of set elements 268f3a2181eSStefano Brivio * @field_len: length of each field in concatenation, bytes 269f3a2181eSStefano Brivio * @field_count: number of concatenated fields in element 270d56aab26SPablo Neira Ayuso * @expr: set must support for expressions 271c50b960cSPatrick McHardy */ 272c50b960cSPatrick McHardy struct nft_set_desc { 273c50b960cSPatrick McHardy unsigned int klen; 274c50b960cSPatrick McHardy unsigned int dlen; 275c50b960cSPatrick McHardy unsigned int size; 276f3a2181eSStefano Brivio u8 field_len[NFT_REG32_COUNT]; 277f3a2181eSStefano Brivio u8 field_count; 278d56aab26SPablo Neira Ayuso bool expr; 279c50b960cSPatrick McHardy }; 280c50b960cSPatrick McHardy 281c50b960cSPatrick McHardy /** 282c50b960cSPatrick McHardy * enum nft_set_class - performance class 283c50b960cSPatrick McHardy * 284c50b960cSPatrick McHardy * @NFT_LOOKUP_O_1: constant, O(1) 285c50b960cSPatrick McHardy * @NFT_LOOKUP_O_LOG_N: logarithmic, O(log N) 286c50b960cSPatrick McHardy * @NFT_LOOKUP_O_N: linear, O(N) 287c50b960cSPatrick McHardy */ 288c50b960cSPatrick McHardy enum nft_set_class { 289c50b960cSPatrick McHardy NFT_SET_CLASS_O_1, 290c50b960cSPatrick McHardy NFT_SET_CLASS_O_LOG_N, 291c50b960cSPatrick McHardy NFT_SET_CLASS_O_N, 292c50b960cSPatrick McHardy }; 293c50b960cSPatrick McHardy 294c50b960cSPatrick McHardy /** 295c50b960cSPatrick McHardy * struct nft_set_estimate - estimation of memory and performance 296c50b960cSPatrick McHardy * characteristics 297c50b960cSPatrick McHardy * 298c50b960cSPatrick McHardy * @size: required memory 29955af753cSPablo Neira Ayuso * @lookup: lookup performance class 3000b5a7874SPablo Neira Ayuso * @space: memory class 301c50b960cSPatrick McHardy */ 302c50b960cSPatrick McHardy struct nft_set_estimate { 3034ef360ddSTaehee Yoo u64 size; 30455af753cSPablo Neira Ayuso enum nft_set_class lookup; 3050b5a7874SPablo Neira Ayuso enum nft_set_class space; 306c50b960cSPatrick McHardy }; 307c50b960cSPatrick McHardy 308b2832dd6SPatrick McHardy struct nft_set_ext; 30922fe54d5SPatrick McHardy struct nft_expr; 310b2832dd6SPatrick McHardy 311c50b960cSPatrick McHardy /** 31220a69341SPatrick McHardy * struct nft_set_ops - nf_tables set operations 31320a69341SPatrick McHardy * 31420a69341SPatrick McHardy * @lookup: look up an element within the set 315d0a8d877SAnder Juaristi * @update: update an element if exists, add it if doesn't exist 316d0a8d877SAnder Juaristi * @delete: delete an element 31720a69341SPatrick McHardy * @insert: insert new element into set 318cc02e457SPatrick McHardy * @activate: activate new element in the next generation 3198411b644SPablo Neira Ayuso * @deactivate: lookup for element and deactivate it in the next generation 3201ba1c414SPablo Neira Ayuso * @flush: deactivate element in the next generation 32120a69341SPatrick McHardy * @remove: remove element from set 322d0a8d877SAnder Juaristi * @walk: iterate over all set elements 323ba0e4d99SPablo Neira Ayuso * @get: get set elements 32420a69341SPatrick McHardy * @privsize: function to return size of set private data 32520a69341SPatrick McHardy * @init: initialize private data of new set instance 32620a69341SPatrick McHardy * @destroy: destroy private data of set instance 327fe2811ebSPatrick McHardy * @elemsize: element private size 328d0a8d877SAnder Juaristi * 329d0a8d877SAnder Juaristi * Operations lookup, update and delete have simpler interfaces, are faster 330d0a8d877SAnder Juaristi * and currently only used in the packet path. All the rest are slower, 331d0a8d877SAnder Juaristi * control plane functions. 33220a69341SPatrick McHardy */ 33320a69341SPatrick McHardy struct nft_set_ops { 33442a55769SPablo Neira Ayuso bool (*lookup)(const struct net *net, 33542a55769SPablo Neira Ayuso const struct nft_set *set, 3368cd8937aSPatrick McHardy const u32 *key, 337b2832dd6SPatrick McHardy const struct nft_set_ext **ext); 33822fe54d5SPatrick McHardy bool (*update)(struct nft_set *set, 3398cd8937aSPatrick McHardy const u32 *key, 34022fe54d5SPatrick McHardy void *(*new)(struct nft_set *, 34122fe54d5SPatrick McHardy const struct nft_expr *, 342a55e22e9SPatrick McHardy struct nft_regs *), 34322fe54d5SPatrick McHardy const struct nft_expr *expr, 344a55e22e9SPatrick McHardy struct nft_regs *regs, 34522fe54d5SPatrick McHardy const struct nft_set_ext **ext); 346d0a8d877SAnder Juaristi bool (*delete)(const struct nft_set *set, 347d0a8d877SAnder Juaristi const u32 *key); 34822fe54d5SPatrick McHardy 34942a55769SPablo Neira Ayuso int (*insert)(const struct net *net, 35042a55769SPablo Neira Ayuso const struct nft_set *set, 351c016c7e4SPablo Neira Ayuso const struct nft_set_elem *elem, 352c016c7e4SPablo Neira Ayuso struct nft_set_ext **ext); 35342a55769SPablo Neira Ayuso void (*activate)(const struct net *net, 35442a55769SPablo Neira Ayuso const struct nft_set *set, 355cc02e457SPatrick McHardy const struct nft_set_elem *elem); 35642a55769SPablo Neira Ayuso void * (*deactivate)(const struct net *net, 35742a55769SPablo Neira Ayuso const struct nft_set *set, 358cc02e457SPatrick McHardy const struct nft_set_elem *elem); 3591ba1c414SPablo Neira Ayuso bool (*flush)(const struct net *net, 3608411b644SPablo Neira Ayuso const struct nft_set *set, 3618411b644SPablo Neira Ayuso void *priv); 3625cb82a38SPablo Neira Ayuso void (*remove)(const struct net *net, 3635cb82a38SPablo Neira Ayuso const struct nft_set *set, 36420a69341SPatrick McHardy const struct nft_set_elem *elem); 36520a69341SPatrick McHardy void (*walk)(const struct nft_ctx *ctx, 366de70185dSPablo Neira Ayuso struct nft_set *set, 36720a69341SPatrick McHardy struct nft_set_iter *iter); 368ba0e4d99SPablo Neira Ayuso void * (*get)(const struct net *net, 369ba0e4d99SPablo Neira Ayuso const struct nft_set *set, 370ba0e4d99SPablo Neira Ayuso const struct nft_set_elem *elem, 371ba0e4d99SPablo Neira Ayuso unsigned int flags); 37220a69341SPatrick McHardy 3734ef360ddSTaehee Yoo u64 (*privsize)(const struct nlattr * const nla[], 374347b408dSPablo Neira Ayuso const struct nft_set_desc *desc); 375c50b960cSPatrick McHardy bool (*estimate)(const struct nft_set_desc *desc, 376c50b960cSPatrick McHardy u32 features, 377c50b960cSPatrick McHardy struct nft_set_estimate *est); 37820a69341SPatrick McHardy int (*init)(const struct nft_set *set, 379c50b960cSPatrick McHardy const struct nft_set_desc *desc, 38020a69341SPatrick McHardy const struct nlattr * const nla[]); 38120a69341SPatrick McHardy void (*destroy)(const struct nft_set *set); 38279b174adSPablo Neira Ayuso void (*gc_init)(const struct nft_set *set); 38320a69341SPatrick McHardy 384fe2811ebSPatrick McHardy unsigned int elemsize; 38520a69341SPatrick McHardy }; 38620a69341SPatrick McHardy 38771cc0873SPhil Sutter /** 38871cc0873SPhil Sutter * struct nft_set_type - nf_tables set type 38971cc0873SPhil Sutter * 39071cc0873SPhil Sutter * @ops: set ops for this type 39171cc0873SPhil Sutter * @features: features supported by the implementation 39271cc0873SPhil Sutter */ 39371cc0873SPhil Sutter struct nft_set_type { 39471cc0873SPhil Sutter const struct nft_set_ops ops; 39571cc0873SPhil Sutter u32 features; 39671cc0873SPhil Sutter }; 39771cc0873SPhil Sutter #define to_set_type(o) container_of(o, struct nft_set_type, ops) 39871cc0873SPhil Sutter 39920a69341SPatrick McHardy /** 40020a69341SPatrick McHardy * struct nft_set - nf_tables set instance 40120a69341SPatrick McHardy * 40220a69341SPatrick McHardy * @list: table set list node 40320a69341SPatrick McHardy * @bindings: list of set bindings 4043453c927SPablo Neira Ayuso * @table: table this set belongs to 4053453c927SPablo Neira Ayuso * @net: netnamespace this set belongs to 40620a69341SPatrick McHardy * @name: name of the set 4073ecbfd65SHarsha Sharma * @handle: unique handle of the set 40820a69341SPatrick McHardy * @ktype: key type (numeric type defined by userspace, not used in the kernel) 40920a69341SPatrick McHardy * @dtype: data type (verdict or numeric type defined by userspace) 4108aeff920SPablo Neira Ayuso * @objtype: object type (see NFT_OBJECT_* definitions) 411c50b960cSPatrick McHardy * @size: maximum set size 412f3a2181eSStefano Brivio * @field_len: length of each field in concatenation, bytes 413f3a2181eSStefano Brivio * @field_count: number of concatenated fields in element 414273fe3f1SPablo Neira Ayuso * @use: number of rules references to this set 415c50b960cSPatrick McHardy * @nelems: number of elements 4163dd0673aSPatrick McHardy * @ndeact: number of deactivated elements queued for removal 417d3e2a111SAnders K. Pedersen * @timeout: default timeout value in jiffies 418761da293SPatrick McHardy * @gc_int: garbage collection interval in msecs 4199363dc4bSArturo Borrero * @policy: set parameterization (see enum nft_set_policies) 420e6d8ecacSCarlos Falgueras García * @udlen: user data length 421e6d8ecacSCarlos Falgueras García * @udata: user data 42265038428SPablo Neira Ayuso * @expr: stateful expression 42320a69341SPatrick McHardy * @ops: set ops 42420a69341SPatrick McHardy * @flags: set flags 42537a9cc52SPablo Neira Ayuso * @genmask: generation mask 42620a69341SPatrick McHardy * @klen: key length 42720a69341SPatrick McHardy * @dlen: data length 42820a69341SPatrick McHardy * @data: private set data 42920a69341SPatrick McHardy */ 43020a69341SPatrick McHardy struct nft_set { 43120a69341SPatrick McHardy struct list_head list; 43220a69341SPatrick McHardy struct list_head bindings; 4333453c927SPablo Neira Ayuso struct nft_table *table; 4343453c927SPablo Neira Ayuso possible_net_t net; 43538745490SPhil Sutter char *name; 4363ecbfd65SHarsha Sharma u64 handle; 43720a69341SPatrick McHardy u32 ktype; 43820a69341SPatrick McHardy u32 dtype; 4398aeff920SPablo Neira Ayuso u32 objtype; 440c50b960cSPatrick McHardy u32 size; 441f3a2181eSStefano Brivio u8 field_len[NFT_REG32_COUNT]; 442f3a2181eSStefano Brivio u8 field_count; 443273fe3f1SPablo Neira Ayuso u32 use; 4443dd0673aSPatrick McHardy atomic_t nelems; 4453dd0673aSPatrick McHardy u32 ndeact; 446761da293SPatrick McHardy u64 timeout; 447761da293SPatrick McHardy u32 gc_int; 4489363dc4bSArturo Borrero u16 policy; 449e6d8ecacSCarlos Falgueras García u16 udlen; 450e6d8ecacSCarlos Falgueras García unsigned char *udata; 45165038428SPablo Neira Ayuso struct nft_expr *expr; 45220a69341SPatrick McHardy /* runtime data below here */ 45320a69341SPatrick McHardy const struct nft_set_ops *ops ____cacheline_aligned; 4546a0a8d10SPablo Neira Ayuso u16 flags:14, 45537a9cc52SPablo Neira Ayuso genmask:2; 45620a69341SPatrick McHardy u8 klen; 45720a69341SPatrick McHardy u8 dlen; 45820a69341SPatrick McHardy unsigned char data[] 45920a69341SPatrick McHardy __attribute__((aligned(__alignof__(u64)))); 46020a69341SPatrick McHardy }; 46120a69341SPatrick McHardy 462408070d6SPablo Neira Ayuso static inline bool nft_set_is_anonymous(const struct nft_set *set) 463408070d6SPablo Neira Ayuso { 464408070d6SPablo Neira Ayuso return set->flags & NFT_SET_ANONYMOUS; 465408070d6SPablo Neira Ayuso } 466408070d6SPablo Neira Ayuso 46720a69341SPatrick McHardy static inline void *nft_set_priv(const struct nft_set *set) 46820a69341SPatrick McHardy { 46920a69341SPatrick McHardy return (void *)set->data; 47020a69341SPatrick McHardy } 47120a69341SPatrick McHardy 4729d098292SPatrick McHardy static inline struct nft_set *nft_set_container_of(const void *priv) 4739d098292SPatrick McHardy { 4749d098292SPatrick McHardy return (void *)priv - offsetof(struct nft_set, data); 4759d098292SPatrick McHardy } 4769d098292SPatrick McHardy 47710659cbaSPablo Neira Ayuso struct nft_set *nft_set_lookup_global(const struct net *net, 478c7a72e3fSPablo Neira Ayuso const struct nft_table *table, 479c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_name, 480c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_id, 481c7a72e3fSPablo Neira Ayuso u8 genmask); 48220a69341SPatrick McHardy 483761da293SPatrick McHardy static inline unsigned long nft_set_gc_interval(const struct nft_set *set) 484761da293SPatrick McHardy { 485761da293SPatrick McHardy return set->gc_int ? msecs_to_jiffies(set->gc_int) : HZ; 486761da293SPatrick McHardy } 487761da293SPatrick McHardy 48820a69341SPatrick McHardy /** 48920a69341SPatrick McHardy * struct nft_set_binding - nf_tables set binding 49020a69341SPatrick McHardy * 49120a69341SPatrick McHardy * @list: set bindings list node 49220a69341SPatrick McHardy * @chain: chain containing the rule bound to the set 49311113e19SPatrick McHardy * @flags: set action flags 49420a69341SPatrick McHardy * 49520a69341SPatrick McHardy * A set binding contains all information necessary for validation 49620a69341SPatrick McHardy * of new elements added to a bound set. 49720a69341SPatrick McHardy */ 49820a69341SPatrick McHardy struct nft_set_binding { 49920a69341SPatrick McHardy struct list_head list; 50020a69341SPatrick McHardy const struct nft_chain *chain; 50111113e19SPatrick McHardy u32 flags; 50220a69341SPatrick McHardy }; 50320a69341SPatrick McHardy 504273fe3f1SPablo Neira Ayuso enum nft_trans_phase; 505273fe3f1SPablo Neira Ayuso void nf_tables_deactivate_set(const struct nft_ctx *ctx, struct nft_set *set, 506273fe3f1SPablo Neira Ayuso struct nft_set_binding *binding, 507273fe3f1SPablo Neira Ayuso enum nft_trans_phase phase); 5085eccdfaaSJoe Perches int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, 50920a69341SPatrick McHardy struct nft_set_binding *binding); 510cd5125d8SFlorian Westphal void nf_tables_destroy_set(const struct nft_ctx *ctx, struct nft_set *set); 51120a69341SPatrick McHardy 5123ac4c07aSPatrick McHardy /** 5133ac4c07aSPatrick McHardy * enum nft_set_extensions - set extension type IDs 5143ac4c07aSPatrick McHardy * 5153ac4c07aSPatrick McHardy * @NFT_SET_EXT_KEY: element key 5167b225d0bSPablo Neira Ayuso * @NFT_SET_EXT_KEY_END: upper bound element key, for ranges 5173ac4c07aSPatrick McHardy * @NFT_SET_EXT_DATA: mapping data 5183ac4c07aSPatrick McHardy * @NFT_SET_EXT_FLAGS: element flags 519c3e1b005SPatrick McHardy * @NFT_SET_EXT_TIMEOUT: element timeout 520c3e1b005SPatrick McHardy * @NFT_SET_EXT_EXPIRATION: element expiration time 52168e942e8SPatrick McHardy * @NFT_SET_EXT_USERDATA: user data associated with the element 522f25ad2e9SPatrick McHardy * @NFT_SET_EXT_EXPR: expression assiociated with the element 5238aeff920SPablo Neira Ayuso * @NFT_SET_EXT_OBJREF: stateful object reference associated with element 5243ac4c07aSPatrick McHardy * @NFT_SET_EXT_NUM: number of extension types 5253ac4c07aSPatrick McHardy */ 5263ac4c07aSPatrick McHardy enum nft_set_extensions { 5273ac4c07aSPatrick McHardy NFT_SET_EXT_KEY, 5287b225d0bSPablo Neira Ayuso NFT_SET_EXT_KEY_END, 5293ac4c07aSPatrick McHardy NFT_SET_EXT_DATA, 5303ac4c07aSPatrick McHardy NFT_SET_EXT_FLAGS, 531c3e1b005SPatrick McHardy NFT_SET_EXT_TIMEOUT, 532c3e1b005SPatrick McHardy NFT_SET_EXT_EXPIRATION, 53368e942e8SPatrick McHardy NFT_SET_EXT_USERDATA, 534f25ad2e9SPatrick McHardy NFT_SET_EXT_EXPR, 5358aeff920SPablo Neira Ayuso NFT_SET_EXT_OBJREF, 5363ac4c07aSPatrick McHardy NFT_SET_EXT_NUM 5373ac4c07aSPatrick McHardy }; 5383ac4c07aSPatrick McHardy 5393ac4c07aSPatrick McHardy /** 5403ac4c07aSPatrick McHardy * struct nft_set_ext_type - set extension type 5413ac4c07aSPatrick McHardy * 5423ac4c07aSPatrick McHardy * @len: fixed part length of the extension 5433ac4c07aSPatrick McHardy * @align: alignment requirements of the extension 5443ac4c07aSPatrick McHardy */ 5453ac4c07aSPatrick McHardy struct nft_set_ext_type { 5463ac4c07aSPatrick McHardy u8 len; 5473ac4c07aSPatrick McHardy u8 align; 5483ac4c07aSPatrick McHardy }; 5493ac4c07aSPatrick McHardy 5503ac4c07aSPatrick McHardy extern const struct nft_set_ext_type nft_set_ext_types[]; 5513ac4c07aSPatrick McHardy 5523ac4c07aSPatrick McHardy /** 5533ac4c07aSPatrick McHardy * struct nft_set_ext_tmpl - set extension template 5543ac4c07aSPatrick McHardy * 5553ac4c07aSPatrick McHardy * @len: length of extension area 5563ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 5573ac4c07aSPatrick McHardy */ 5583ac4c07aSPatrick McHardy struct nft_set_ext_tmpl { 5593ac4c07aSPatrick McHardy u16 len; 5603ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 5613ac4c07aSPatrick McHardy }; 5623ac4c07aSPatrick McHardy 5633ac4c07aSPatrick McHardy /** 5643ac4c07aSPatrick McHardy * struct nft_set_ext - set extensions 5653ac4c07aSPatrick McHardy * 566cc02e457SPatrick McHardy * @genmask: generation mask 5673ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 5683ac4c07aSPatrick McHardy * @data: beginning of extension data 5693ac4c07aSPatrick McHardy */ 5703ac4c07aSPatrick McHardy struct nft_set_ext { 571cc02e457SPatrick McHardy u8 genmask; 5723ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 5736daf1414SGustavo A. R. Silva char data[]; 5743ac4c07aSPatrick McHardy }; 5753ac4c07aSPatrick McHardy 5763ac4c07aSPatrick McHardy static inline void nft_set_ext_prepare(struct nft_set_ext_tmpl *tmpl) 5773ac4c07aSPatrick McHardy { 5783ac4c07aSPatrick McHardy memset(tmpl, 0, sizeof(*tmpl)); 5793ac4c07aSPatrick McHardy tmpl->len = sizeof(struct nft_set_ext); 5803ac4c07aSPatrick McHardy } 5813ac4c07aSPatrick McHardy 5823ac4c07aSPatrick McHardy static inline void nft_set_ext_add_length(struct nft_set_ext_tmpl *tmpl, u8 id, 5833ac4c07aSPatrick McHardy unsigned int len) 5843ac4c07aSPatrick McHardy { 5853ac4c07aSPatrick McHardy tmpl->len = ALIGN(tmpl->len, nft_set_ext_types[id].align); 5863ac4c07aSPatrick McHardy BUG_ON(tmpl->len > U8_MAX); 5873ac4c07aSPatrick McHardy tmpl->offset[id] = tmpl->len; 5883ac4c07aSPatrick McHardy tmpl->len += nft_set_ext_types[id].len + len; 5893ac4c07aSPatrick McHardy } 5903ac4c07aSPatrick McHardy 5913ac4c07aSPatrick McHardy static inline void nft_set_ext_add(struct nft_set_ext_tmpl *tmpl, u8 id) 5923ac4c07aSPatrick McHardy { 5933ac4c07aSPatrick McHardy nft_set_ext_add_length(tmpl, id, 0); 5943ac4c07aSPatrick McHardy } 5953ac4c07aSPatrick McHardy 5963ac4c07aSPatrick McHardy static inline void nft_set_ext_init(struct nft_set_ext *ext, 5973ac4c07aSPatrick McHardy const struct nft_set_ext_tmpl *tmpl) 5983ac4c07aSPatrick McHardy { 5993ac4c07aSPatrick McHardy memcpy(ext->offset, tmpl->offset, sizeof(ext->offset)); 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->offset[id]; 6053ac4c07aSPatrick McHardy } 6063ac4c07aSPatrick McHardy 6073ac4c07aSPatrick McHardy static inline bool nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) 6083ac4c07aSPatrick McHardy { 6093ac4c07aSPatrick McHardy return ext && __nft_set_ext_exists(ext, id); 6103ac4c07aSPatrick McHardy } 6113ac4c07aSPatrick McHardy 6123ac4c07aSPatrick McHardy static inline void *nft_set_ext(const struct nft_set_ext *ext, u8 id) 6133ac4c07aSPatrick McHardy { 6143ac4c07aSPatrick McHardy return (void *)ext + ext->offset[id]; 6153ac4c07aSPatrick McHardy } 6163ac4c07aSPatrick McHardy 6173ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_key(const struct nft_set_ext *ext) 6183ac4c07aSPatrick McHardy { 6193ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_KEY); 6203ac4c07aSPatrick McHardy } 6213ac4c07aSPatrick McHardy 6227b225d0bSPablo Neira Ayuso static inline struct nft_data *nft_set_ext_key_end(const struct nft_set_ext *ext) 6237b225d0bSPablo Neira Ayuso { 6247b225d0bSPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_KEY_END); 6257b225d0bSPablo Neira Ayuso } 6267b225d0bSPablo Neira Ayuso 6273ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_data(const struct nft_set_ext *ext) 6283ac4c07aSPatrick McHardy { 6293ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_DATA); 6303ac4c07aSPatrick McHardy } 6313ac4c07aSPatrick McHardy 6323ac4c07aSPatrick McHardy static inline u8 *nft_set_ext_flags(const struct nft_set_ext *ext) 6333ac4c07aSPatrick McHardy { 6343ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_FLAGS); 6353ac4c07aSPatrick McHardy } 636ef1f7df9SPatrick McHardy 637c3e1b005SPatrick McHardy static inline u64 *nft_set_ext_timeout(const struct nft_set_ext *ext) 638c3e1b005SPatrick McHardy { 639c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_TIMEOUT); 640c3e1b005SPatrick McHardy } 641c3e1b005SPatrick McHardy 6428e1102d5SFlorian Westphal static inline u64 *nft_set_ext_expiration(const struct nft_set_ext *ext) 643c3e1b005SPatrick McHardy { 644c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_EXPIRATION); 645c3e1b005SPatrick McHardy } 646c3e1b005SPatrick McHardy 64768e942e8SPatrick McHardy static inline struct nft_userdata *nft_set_ext_userdata(const struct nft_set_ext *ext) 64868e942e8SPatrick McHardy { 64968e942e8SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_USERDATA); 65068e942e8SPatrick McHardy } 65168e942e8SPatrick McHardy 652f25ad2e9SPatrick McHardy static inline struct nft_expr *nft_set_ext_expr(const struct nft_set_ext *ext) 653f25ad2e9SPatrick McHardy { 654f25ad2e9SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_EXPR); 655f25ad2e9SPatrick McHardy } 656f25ad2e9SPatrick McHardy 657c3e1b005SPatrick McHardy static inline bool nft_set_elem_expired(const struct nft_set_ext *ext) 658c3e1b005SPatrick McHardy { 659c3e1b005SPatrick McHardy return nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION) && 6608e1102d5SFlorian Westphal time_is_before_eq_jiffies64(*nft_set_ext_expiration(ext)); 661c3e1b005SPatrick McHardy } 662c3e1b005SPatrick McHardy 663fe2811ebSPatrick McHardy static inline struct nft_set_ext *nft_set_elem_ext(const struct nft_set *set, 664fe2811ebSPatrick McHardy void *elem) 665fe2811ebSPatrick McHardy { 666fe2811ebSPatrick McHardy return elem + set->ops->elemsize; 667fe2811ebSPatrick McHardy } 668fe2811ebSPatrick McHardy 6698aeff920SPablo Neira Ayuso static inline struct nft_object **nft_set_ext_obj(const struct nft_set_ext *ext) 6708aeff920SPablo Neira Ayuso { 6718aeff920SPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_OBJREF); 6728aeff920SPablo Neira Ayuso } 6738aeff920SPablo Neira Ayuso 674a7fc9368SPablo Neira Ayuso struct nft_expr *nft_set_elem_expr_alloc(const struct nft_ctx *ctx, 675a7fc9368SPablo Neira Ayuso const struct nft_set *set, 676a7fc9368SPablo Neira Ayuso const struct nlattr *attr); 677a7fc9368SPablo Neira Ayuso 67822fe54d5SPatrick McHardy void *nft_set_elem_init(const struct nft_set *set, 67922fe54d5SPatrick McHardy const struct nft_set_ext_tmpl *tmpl, 6807b225d0bSPablo Neira Ayuso const u32 *key, const u32 *key_end, const u32 *data, 68179ebb5bbSLaura Garcia Liebana u64 timeout, u64 expiration, gfp_t gfp); 68261f9e292SLiping Zhang void nft_set_elem_destroy(const struct nft_set *set, void *elem, 68361f9e292SLiping Zhang bool destroy_expr); 68461edafbbSPatrick McHardy 68520a69341SPatrick McHardy /** 686cfed7e1bSPatrick McHardy * struct nft_set_gc_batch_head - nf_tables set garbage collection batch 687cfed7e1bSPatrick McHardy * 688cfed7e1bSPatrick McHardy * @rcu: rcu head 689cfed7e1bSPatrick McHardy * @set: set the elements belong to 690cfed7e1bSPatrick McHardy * @cnt: count of elements 691cfed7e1bSPatrick McHardy */ 692cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head { 693cfed7e1bSPatrick McHardy struct rcu_head rcu; 694cfed7e1bSPatrick McHardy const struct nft_set *set; 695cfed7e1bSPatrick McHardy unsigned int cnt; 696cfed7e1bSPatrick McHardy }; 697cfed7e1bSPatrick McHardy 698cfed7e1bSPatrick McHardy #define NFT_SET_GC_BATCH_SIZE ((PAGE_SIZE - \ 699cfed7e1bSPatrick McHardy sizeof(struct nft_set_gc_batch_head)) / \ 700cfed7e1bSPatrick McHardy sizeof(void *)) 701cfed7e1bSPatrick McHardy 702cfed7e1bSPatrick McHardy /** 703cfed7e1bSPatrick McHardy * struct nft_set_gc_batch - nf_tables set garbage collection batch 704cfed7e1bSPatrick McHardy * 705cfed7e1bSPatrick McHardy * @head: GC batch head 706cfed7e1bSPatrick McHardy * @elems: garbage collection elements 707cfed7e1bSPatrick McHardy */ 708cfed7e1bSPatrick McHardy struct nft_set_gc_batch { 709cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head head; 710cfed7e1bSPatrick McHardy void *elems[NFT_SET_GC_BATCH_SIZE]; 711cfed7e1bSPatrick McHardy }; 712cfed7e1bSPatrick McHardy 713cfed7e1bSPatrick McHardy struct nft_set_gc_batch *nft_set_gc_batch_alloc(const struct nft_set *set, 714cfed7e1bSPatrick McHardy gfp_t gfp); 715cfed7e1bSPatrick McHardy void nft_set_gc_batch_release(struct rcu_head *rcu); 716cfed7e1bSPatrick McHardy 717cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_complete(struct nft_set_gc_batch *gcb) 718cfed7e1bSPatrick McHardy { 719cfed7e1bSPatrick McHardy if (gcb != NULL) 720cfed7e1bSPatrick McHardy call_rcu(&gcb->head.rcu, nft_set_gc_batch_release); 721cfed7e1bSPatrick McHardy } 722cfed7e1bSPatrick McHardy 723cfed7e1bSPatrick McHardy static inline struct nft_set_gc_batch * 724cfed7e1bSPatrick McHardy nft_set_gc_batch_check(const struct nft_set *set, struct nft_set_gc_batch *gcb, 725cfed7e1bSPatrick McHardy gfp_t gfp) 726cfed7e1bSPatrick McHardy { 727cfed7e1bSPatrick McHardy if (gcb != NULL) { 728cfed7e1bSPatrick McHardy if (gcb->head.cnt + 1 < ARRAY_SIZE(gcb->elems)) 729cfed7e1bSPatrick McHardy return gcb; 730cfed7e1bSPatrick McHardy nft_set_gc_batch_complete(gcb); 731cfed7e1bSPatrick McHardy } 732cfed7e1bSPatrick McHardy return nft_set_gc_batch_alloc(set, gfp); 733cfed7e1bSPatrick McHardy } 734cfed7e1bSPatrick McHardy 735cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_add(struct nft_set_gc_batch *gcb, 736cfed7e1bSPatrick McHardy void *elem) 737cfed7e1bSPatrick McHardy { 738cfed7e1bSPatrick McHardy gcb->elems[gcb->head.cnt++] = elem; 739cfed7e1bSPatrick McHardy } 740cfed7e1bSPatrick McHardy 741b8e20400SPablo Neira Ayuso struct nft_expr_ops; 742cfed7e1bSPatrick McHardy /** 743ef1f7df9SPatrick McHardy * struct nft_expr_type - nf_tables expression type 74496518518SPatrick McHardy * 745ef1f7df9SPatrick McHardy * @select_ops: function to select nft_expr_ops 746b8e20400SPablo Neira Ayuso * @release_ops: release nft_expr_ops 747ef1f7df9SPatrick McHardy * @ops: default ops, used when no select_ops functions is present 74896518518SPatrick McHardy * @list: used internally 74996518518SPatrick McHardy * @name: Identifier 75096518518SPatrick McHardy * @owner: module reference 75196518518SPatrick McHardy * @policy: netlink attribute policy 75296518518SPatrick McHardy * @maxattr: highest netlink attribute number 75364d46806SPatrick McHardy * @family: address family for AF-specific types 754151d799aSPatrick McHardy * @flags: expression type flags 755ef1f7df9SPatrick McHardy */ 756ef1f7df9SPatrick McHardy struct nft_expr_type { 7570ca743a5SPablo Neira Ayuso const struct nft_expr_ops *(*select_ops)(const struct nft_ctx *, 7580ca743a5SPablo Neira Ayuso const struct nlattr * const tb[]); 759b8e20400SPablo Neira Ayuso void (*release_ops)(const struct nft_expr_ops *ops); 760ef1f7df9SPatrick McHardy const struct nft_expr_ops *ops; 761ef1f7df9SPatrick McHardy struct list_head list; 762ef1f7df9SPatrick McHardy const char *name; 763ef1f7df9SPatrick McHardy struct module *owner; 764ef1f7df9SPatrick McHardy const struct nla_policy *policy; 765ef1f7df9SPatrick McHardy unsigned int maxattr; 76664d46806SPatrick McHardy u8 family; 767151d799aSPatrick McHardy u8 flags; 768ef1f7df9SPatrick McHardy }; 769ef1f7df9SPatrick McHardy 770151d799aSPatrick McHardy #define NFT_EXPR_STATEFUL 0x1 77179b174adSPablo Neira Ayuso #define NFT_EXPR_GC 0x2 772151d799aSPatrick McHardy 773f6ac8585SPablo Neira Ayuso enum nft_trans_phase { 774f6ac8585SPablo Neira Ayuso NFT_TRANS_PREPARE, 775f6ac8585SPablo Neira Ayuso NFT_TRANS_ABORT, 776f6ac8585SPablo Neira Ayuso NFT_TRANS_COMMIT, 777f6ac8585SPablo Neira Ayuso NFT_TRANS_RELEASE 778f6ac8585SPablo Neira Ayuso }; 779f6ac8585SPablo Neira Ayuso 780c9626a2cSPablo Neira Ayuso struct nft_flow_rule; 781c9626a2cSPablo Neira Ayuso struct nft_offload_ctx; 782c9626a2cSPablo Neira Ayuso 783ef1f7df9SPatrick McHardy /** 784ef1f7df9SPatrick McHardy * struct nft_expr_ops - nf_tables expression operations 785ef1f7df9SPatrick McHardy * 786ef1f7df9SPatrick McHardy * @eval: Expression evaluation function 78796518518SPatrick McHardy * @size: full expression size, including private data size 788ef1f7df9SPatrick McHardy * @init: initialization function 789cd5125d8SFlorian Westphal * @activate: activate expression in the next generation 790cd5125d8SFlorian Westphal * @deactivate: deactivate expression in next generation 791cd5125d8SFlorian Westphal * @destroy: destruction function, called after synchronize_rcu 792ef1f7df9SPatrick McHardy * @dump: function to dump parameters 793ef1f7df9SPatrick McHardy * @type: expression type 7940ca743a5SPablo Neira Ayuso * @validate: validate expression, called during loop detection 7950ca743a5SPablo Neira Ayuso * @data: extra data to attach to this expression operation 79696518518SPatrick McHardy */ 79796518518SPatrick McHardy struct nft_expr; 79896518518SPatrick McHardy struct nft_expr_ops { 79996518518SPatrick McHardy void (*eval)(const struct nft_expr *expr, 800a55e22e9SPatrick McHardy struct nft_regs *regs, 80196518518SPatrick McHardy const struct nft_pktinfo *pkt); 802086f3321SPablo Neira Ayuso int (*clone)(struct nft_expr *dst, 803086f3321SPablo Neira Ayuso const struct nft_expr *src); 804ef1f7df9SPatrick McHardy unsigned int size; 805ef1f7df9SPatrick McHardy 80696518518SPatrick McHardy int (*init)(const struct nft_ctx *ctx, 80796518518SPatrick McHardy const struct nft_expr *expr, 80896518518SPatrick McHardy const struct nlattr * const tb[]); 809bb7b40aeSPablo Neira Ayuso void (*activate)(const struct nft_ctx *ctx, 810bb7b40aeSPablo Neira Ayuso const struct nft_expr *expr); 811bb7b40aeSPablo Neira Ayuso void (*deactivate)(const struct nft_ctx *ctx, 812f6ac8585SPablo Neira Ayuso const struct nft_expr *expr, 813f6ac8585SPablo Neira Ayuso enum nft_trans_phase phase); 81462472bceSPatrick McHardy void (*destroy)(const struct nft_ctx *ctx, 81562472bceSPatrick McHardy const struct nft_expr *expr); 816371ebcbbSPablo Neira Ayuso void (*destroy_clone)(const struct nft_ctx *ctx, 817371ebcbbSPablo Neira Ayuso const struct nft_expr *expr); 81896518518SPatrick McHardy int (*dump)(struct sk_buff *skb, 81996518518SPatrick McHardy const struct nft_expr *expr); 8200ca743a5SPablo Neira Ayuso int (*validate)(const struct nft_ctx *ctx, 8210ca743a5SPablo Neira Ayuso const struct nft_expr *expr, 8220ca743a5SPablo Neira Ayuso const struct nft_data **data); 82379b174adSPablo Neira Ayuso bool (*gc)(struct net *net, 82479b174adSPablo Neira Ayuso const struct nft_expr *expr); 825c9626a2cSPablo Neira Ayuso int (*offload)(struct nft_offload_ctx *ctx, 826c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow, 827c9626a2cSPablo Neira Ayuso const struct nft_expr *expr); 828c9626a2cSPablo Neira Ayuso u32 offload_flags; 829ef1f7df9SPatrick McHardy const struct nft_expr_type *type; 8300ca743a5SPablo Neira Ayuso void *data; 83196518518SPatrick McHardy }; 83296518518SPatrick McHardy 833ef1f7df9SPatrick McHardy #define NFT_EXPR_MAXATTR 16 83496518518SPatrick McHardy #define NFT_EXPR_SIZE(size) (sizeof(struct nft_expr) + \ 83596518518SPatrick McHardy ALIGN(size, __alignof__(struct nft_expr))) 83696518518SPatrick McHardy 83796518518SPatrick McHardy /** 83896518518SPatrick McHardy * struct nft_expr - nf_tables expression 83996518518SPatrick McHardy * 84096518518SPatrick McHardy * @ops: expression ops 84196518518SPatrick McHardy * @data: expression private data 84296518518SPatrick McHardy */ 84396518518SPatrick McHardy struct nft_expr { 84496518518SPatrick McHardy const struct nft_expr_ops *ops; 845250367c5SLukas Wunner unsigned char data[] 846250367c5SLukas Wunner __attribute__((aligned(__alignof__(u64)))); 84796518518SPatrick McHardy }; 84896518518SPatrick McHardy 84996518518SPatrick McHardy static inline void *nft_expr_priv(const struct nft_expr *expr) 85096518518SPatrick McHardy { 85196518518SPatrick McHardy return (void *)expr->data; 85296518518SPatrick McHardy } 85396518518SPatrick McHardy 854c604cc69SPablo Neira Ayuso int nft_expr_clone(struct nft_expr *dst, struct nft_expr *src); 8550b2d8a7bSPatrick McHardy void nft_expr_destroy(const struct nft_ctx *ctx, struct nft_expr *expr); 8560b2d8a7bSPatrick McHardy int nft_expr_dump(struct sk_buff *skb, unsigned int attr, 8570b2d8a7bSPatrick McHardy const struct nft_expr *expr); 8580b2d8a7bSPatrick McHardy 85996518518SPatrick McHardy /** 86096518518SPatrick McHardy * struct nft_rule - nf_tables rule 86196518518SPatrick McHardy * 86296518518SPatrick McHardy * @list: used internally 86396518518SPatrick McHardy * @handle: rule handle 8640628b123SPablo Neira Ayuso * @genmask: generation mask 86596518518SPatrick McHardy * @dlen: length of expression data 86686f1ec32SPatrick McHardy * @udata: user data is appended to the rule 86796518518SPatrick McHardy * @data: expression data 86896518518SPatrick McHardy */ 86996518518SPatrick McHardy struct nft_rule { 87096518518SPatrick McHardy struct list_head list; 8710768b3b3SPablo Neira Ayuso u64 handle:42, 8720628b123SPablo Neira Ayuso genmask:2, 8730768b3b3SPablo Neira Ayuso dlen:12, 87486f1ec32SPatrick McHardy udata:1; 87596518518SPatrick McHardy unsigned char data[] 87696518518SPatrick McHardy __attribute__((aligned(__alignof__(struct nft_expr)))); 87796518518SPatrick McHardy }; 87896518518SPatrick McHardy 87996518518SPatrick McHardy static inline struct nft_expr *nft_expr_first(const struct nft_rule *rule) 88096518518SPatrick McHardy { 88196518518SPatrick McHardy return (struct nft_expr *)&rule->data[0]; 88296518518SPatrick McHardy } 88396518518SPatrick McHardy 88496518518SPatrick McHardy static inline struct nft_expr *nft_expr_next(const struct nft_expr *expr) 88596518518SPatrick McHardy { 88696518518SPatrick McHardy return ((void *)expr) + expr->ops->size; 88796518518SPatrick McHardy } 88896518518SPatrick McHardy 88996518518SPatrick McHardy static inline struct nft_expr *nft_expr_last(const struct nft_rule *rule) 89096518518SPatrick McHardy { 89196518518SPatrick McHardy return (struct nft_expr *)&rule->data[rule->dlen]; 89296518518SPatrick McHardy } 89396518518SPatrick McHardy 89431cc578aSSaeed Mirzamohammadi static inline bool nft_expr_more(const struct nft_rule *rule, 89531cc578aSSaeed Mirzamohammadi const struct nft_expr *expr) 89631cc578aSSaeed Mirzamohammadi { 89731cc578aSSaeed Mirzamohammadi return expr != nft_expr_last(rule) && expr->ops; 89831cc578aSSaeed Mirzamohammadi } 89931cc578aSSaeed Mirzamohammadi 90086f1ec32SPatrick McHardy static inline struct nft_userdata *nft_userdata(const struct nft_rule *rule) 9010768b3b3SPablo Neira Ayuso { 9020768b3b3SPablo Neira Ayuso return (void *)&rule->data[rule->dlen]; 9030768b3b3SPablo Neira Ayuso } 9040768b3b3SPablo Neira Ayuso 905d0e2c7deSPablo Neira Ayuso void nf_tables_rule_release(const struct nft_ctx *ctx, struct nft_rule *rule); 906d0e2c7deSPablo Neira Ayuso 90776adfafeSPablo Neira Ayuso static inline void nft_set_elem_update_expr(const struct nft_set_ext *ext, 90876adfafeSPablo Neira Ayuso struct nft_regs *regs, 90976adfafeSPablo Neira Ayuso const struct nft_pktinfo *pkt) 91076adfafeSPablo Neira Ayuso { 91176adfafeSPablo Neira Ayuso struct nft_expr *expr; 91276adfafeSPablo Neira Ayuso 913a26c1e49SPablo Neira Ayuso if (__nft_set_ext_exists(ext, NFT_SET_EXT_EXPR)) { 91476adfafeSPablo Neira Ayuso expr = nft_set_ext_expr(ext); 91576adfafeSPablo Neira Ayuso expr->ops->eval(expr, regs, pkt); 91676adfafeSPablo Neira Ayuso } 91776adfafeSPablo Neira Ayuso } 91876adfafeSPablo Neira Ayuso 91996518518SPatrick McHardy /* 92096518518SPatrick McHardy * The last pointer isn't really necessary, but the compiler isn't able to 92196518518SPatrick McHardy * determine that the result of nft_expr_last() is always the same since it 92296518518SPatrick McHardy * can't assume that the dlen value wasn't changed within calls in the loop. 92396518518SPatrick McHardy */ 92496518518SPatrick McHardy #define nft_rule_for_each_expr(expr, last, rule) \ 92596518518SPatrick McHardy for ((expr) = nft_expr_first(rule), (last) = nft_expr_last(rule); \ 92696518518SPatrick McHardy (expr) != (last); \ 92796518518SPatrick McHardy (expr) = nft_expr_next(expr)) 92896518518SPatrick McHardy 929ad652f38SPablo Neira Ayuso #define NFT_CHAIN_POLICY_UNSET U8_MAX 930ad652f38SPablo Neira Ayuso 93196518518SPatrick McHardy /** 93296518518SPatrick McHardy * struct nft_chain - nf_tables chain 93396518518SPatrick McHardy * 93496518518SPatrick McHardy * @rules: list of rules in the chain 93596518518SPatrick McHardy * @list: used internally 9361b2470e5SFlorian Westphal * @rhlhead: used internally 937b5bc89bfSPablo Neira Ayuso * @table: table that this chain belongs to 93896518518SPatrick McHardy * @handle: chain handle 93996518518SPatrick McHardy * @use: number of jump references to this chain 940a0a7379eSPablo Neira Ayuso * @flags: bitmask of enum nft_chain_flags 94196518518SPatrick McHardy * @name: name of the chain 94296518518SPatrick McHardy */ 94396518518SPatrick McHardy struct nft_chain { 9440cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_0; 9450cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_1; 94696518518SPatrick McHardy struct list_head rules; 94796518518SPatrick McHardy struct list_head list; 9481b2470e5SFlorian Westphal struct rhlist_head rhlhead; 949b5bc89bfSPablo Neira Ayuso struct nft_table *table; 95096518518SPatrick McHardy u64 handle; 951a0a7379eSPablo Neira Ayuso u32 use; 952d0e2c7deSPablo Neira Ayuso u8 flags:5, 953d0e2c7deSPablo Neira Ayuso bound:1, 954664b0f8cSPablo Neira Ayuso genmask:2; 955b7263e07SPhil Sutter char *name; 956002f2176SJose M. Guisado Gomez u16 udlen; 957002f2176SJose M. Guisado Gomez u8 *udata; 9580cbc06b3SFlorian Westphal 9590cbc06b3SFlorian Westphal /* Only used during control plane commit phase: */ 9600cbc06b3SFlorian Westphal struct nft_rule **rules_next; 96196518518SPatrick McHardy }; 96296518518SPatrick McHardy 963a654de8fSPablo Neira Ayuso int nft_chain_validate(const struct nft_ctx *ctx, const struct nft_chain *chain); 964a654de8fSPablo Neira Ayuso 96532537e91SPablo Neira Ayuso enum nft_chain_types { 9669370761cSPablo Neira Ayuso NFT_CHAIN_T_DEFAULT = 0, 9679370761cSPablo Neira Ayuso NFT_CHAIN_T_ROUTE, 9689370761cSPablo Neira Ayuso NFT_CHAIN_T_NAT, 9699370761cSPablo Neira Ayuso NFT_CHAIN_T_MAX 9709370761cSPablo Neira Ayuso }; 9719370761cSPablo Neira Ayuso 9721a1e1a12SPatrick McHardy /** 97332537e91SPablo Neira Ayuso * struct nft_chain_type - nf_tables chain type info 9741a1e1a12SPatrick McHardy * 9751a1e1a12SPatrick McHardy * @name: name of the type 9761a1e1a12SPatrick McHardy * @type: numeric identifier 9771a1e1a12SPatrick McHardy * @family: address family 9781a1e1a12SPatrick McHardy * @owner: module owner 9791a1e1a12SPatrick McHardy * @hook_mask: mask of valid hooks 980c2f9eafeSPablo Neira Ayuso * @hooks: array of hook functions 9814e25ceb8SFlorian Westphal * @ops_register: base chain register function 9824e25ceb8SFlorian Westphal * @ops_unregister: base chain unregister function 9831a1e1a12SPatrick McHardy */ 98432537e91SPablo Neira Ayuso struct nft_chain_type { 9851a1e1a12SPatrick McHardy const char *name; 98632537e91SPablo Neira Ayuso enum nft_chain_types type; 9871a1e1a12SPatrick McHardy int family; 9881a1e1a12SPatrick McHardy struct module *owner; 9891a1e1a12SPatrick McHardy unsigned int hook_mask; 990d25e2e93SPablo Neira Ayuso nf_hookfn *hooks[NFT_MAX_HOOKS]; 9914e25ceb8SFlorian Westphal int (*ops_register)(struct net *net, const struct nf_hook_ops *ops); 9924e25ceb8SFlorian Westphal void (*ops_unregister)(struct net *net, const struct nf_hook_ops *ops); 9931a1e1a12SPatrick McHardy }; 9941a1e1a12SPatrick McHardy 9957210e4e3SPablo Neira Ayuso int nft_chain_validate_dependency(const struct nft_chain *chain, 99632537e91SPablo Neira Ayuso enum nft_chain_types type); 99775e8d06dSPablo Neira Ayuso int nft_chain_validate_hooks(const struct nft_chain *chain, 99875e8d06dSPablo Neira Ayuso unsigned int hook_flags); 9997210e4e3SPablo Neira Ayuso 1000d0e2c7deSPablo Neira Ayuso static inline bool nft_chain_is_bound(struct nft_chain *chain) 1001d0e2c7deSPablo Neira Ayuso { 1002d0e2c7deSPablo Neira Ayuso return (chain->flags & NFT_CHAIN_BINDING) && chain->bound; 1003d0e2c7deSPablo Neira Ayuso } 1004d0e2c7deSPablo Neira Ayuso 1005d0e2c7deSPablo Neira Ayuso void nft_chain_del(struct nft_chain *chain); 1006d0e2c7deSPablo Neira Ayuso void nf_tables_chain_destroy(struct nft_ctx *ctx); 1007d0e2c7deSPablo Neira Ayuso 10080ca743a5SPablo Neira Ayuso struct nft_stats { 10090ca743a5SPablo Neira Ayuso u64 bytes; 10100ca743a5SPablo Neira Ayuso u64 pkts; 1011ce355e20SEric Dumazet struct u64_stats_sync syncp; 10120ca743a5SPablo Neira Ayuso }; 10130ca743a5SPablo Neira Ayuso 10143f0465a9SPablo Neira Ayuso struct nft_hook { 10153f0465a9SPablo Neira Ayuso struct list_head list; 1016abadb2f8SPablo Neira Ayuso bool inactive; 10173f0465a9SPablo Neira Ayuso struct nf_hook_ops ops; 10183f0465a9SPablo Neira Ayuso struct rcu_head rcu; 10193f0465a9SPablo Neira Ayuso }; 10203f0465a9SPablo Neira Ayuso 102196518518SPatrick McHardy /** 102296518518SPatrick McHardy * struct nft_base_chain - nf_tables base chain 102396518518SPatrick McHardy * 102496518518SPatrick McHardy * @ops: netfilter hook ops 1025d54725cdSPablo Neira Ayuso * @hook_list: list of netfilter hooks (for NFPROTO_NETDEV family) 10269370761cSPablo Neira Ayuso * @type: chain type 10270ca743a5SPablo Neira Ayuso * @policy: default policy 10280ca743a5SPablo Neira Ayuso * @stats: per-cpu chain stats 102996518518SPatrick McHardy * @chain: the chain 103014bfb13fSPablo Neira Ayuso * @flow_block: flow block (for hardware offload) 103196518518SPatrick McHardy */ 103296518518SPatrick McHardy struct nft_base_chain { 1033c974a3a3SPablo Neira Ayuso struct nf_hook_ops ops; 1034d54725cdSPablo Neira Ayuso struct list_head hook_list; 103532537e91SPablo Neira Ayuso const struct nft_chain_type *type; 10360ca743a5SPablo Neira Ayuso u8 policy; 1037835b8033SPablo Neira Ayuso u8 flags; 10380ca743a5SPablo Neira Ayuso struct nft_stats __percpu *stats; 103996518518SPatrick McHardy struct nft_chain chain; 104014bfb13fSPablo Neira Ayuso struct flow_block flow_block; 104196518518SPatrick McHardy }; 104296518518SPatrick McHardy 104396518518SPatrick McHardy static inline struct nft_base_chain *nft_base_chain(const struct nft_chain *chain) 104496518518SPatrick McHardy { 104596518518SPatrick McHardy return container_of(chain, struct nft_base_chain, chain); 104696518518SPatrick McHardy } 104796518518SPatrick McHardy 1048f323d954SPablo Neira Ayuso static inline bool nft_is_base_chain(const struct nft_chain *chain) 1049f323d954SPablo Neira Ayuso { 105067c49de4SPablo Neira Ayuso return chain->flags & NFT_CHAIN_BASE; 1051f323d954SPablo Neira Ayuso } 1052f323d954SPablo Neira Ayuso 10535ebe0b0eSPablo Neira Ayuso int __nft_release_basechain(struct nft_ctx *ctx); 1054835b8033SPablo Neira Ayuso 105506198b34SEric W. Biederman unsigned int nft_do_chain(struct nft_pktinfo *pkt, void *priv); 105696518518SPatrick McHardy 105796518518SPatrick McHardy /** 105896518518SPatrick McHardy * struct nft_table - nf_tables table 105996518518SPatrick McHardy * 106096518518SPatrick McHardy * @list: used internally 10611b2470e5SFlorian Westphal * @chains_ht: chains in the table 10621b2470e5SFlorian Westphal * @chains: same, for stable walks 106396518518SPatrick McHardy * @sets: sets in the table 1064e5009240SPablo Neira Ayuso * @objects: stateful objects in the table 10653b49e2e9SPablo Neira Ayuso * @flowtables: flow tables in the table 106696518518SPatrick McHardy * @hgenerator: handle generator state 10673ecbfd65SHarsha Sharma * @handle: table handle 106896518518SPatrick McHardy * @use: number of chain references to this table 106996518518SPatrick McHardy * @flags: table flag (see enum nft_table_flags) 1070f2a6d766SPablo Neira Ayuso * @genmask: generation mask 107136596dadSPablo Neira Ayuso * @afinfo: address family info 107296518518SPatrick McHardy * @name: name of the table 107396518518SPatrick McHardy */ 107496518518SPatrick McHardy struct nft_table { 107596518518SPatrick McHardy struct list_head list; 10761b2470e5SFlorian Westphal struct rhltable chains_ht; 107796518518SPatrick McHardy struct list_head chains; 107896518518SPatrick McHardy struct list_head sets; 1079e5009240SPablo Neira Ayuso struct list_head objects; 10803b49e2e9SPablo Neira Ayuso struct list_head flowtables; 108196518518SPatrick McHardy u64 hgenerator; 10823ecbfd65SHarsha Sharma u64 handle; 108396518518SPatrick McHardy u32 use; 108498319cb9SPablo Neira Ayuso u16 family:6, 108598319cb9SPablo Neira Ayuso flags:8, 1086f2a6d766SPablo Neira Ayuso genmask:2; 1087e46abbccSPhil Sutter char *name; 10887a81575bSJose M. Guisado Gomez u16 udlen; 10897a81575bSJose M. Guisado Gomez u8 *udata; 1090ebddf1a8SPablo Neira Ayuso }; 1091ebddf1a8SPablo Neira Ayuso 1092d3519cb8SPablo Neira Ayuso static inline bool nft_base_chain_netdev(int family, u32 hooknum) 1093d3519cb8SPablo Neira Ayuso { 1094d3519cb8SPablo Neira Ayuso return family == NFPROTO_NETDEV || 1095d3519cb8SPablo Neira Ayuso (family == NFPROTO_INET && hooknum == NF_INET_INGRESS); 1096d3519cb8SPablo Neira Ayuso } 1097d3519cb8SPablo Neira Ayuso 1098cc07eeb0SPablo Neira Ayuso void nft_register_chain_type(const struct nft_chain_type *); 109932537e91SPablo Neira Ayuso void nft_unregister_chain_type(const struct nft_chain_type *); 110096518518SPatrick McHardy 11015eccdfaaSJoe Perches int nft_register_expr(struct nft_expr_type *); 11025eccdfaaSJoe Perches void nft_unregister_expr(struct nft_expr_type *); 110396518518SPatrick McHardy 110433d5a7b1SFlorian Westphal int nft_verdict_dump(struct sk_buff *skb, int type, 110533d5a7b1SFlorian Westphal const struct nft_verdict *v); 110633d5a7b1SFlorian Westphal 110733d5a7b1SFlorian Westphal /** 1108d152159bSFlorian Westphal * struct nft_object_hash_key - key to lookup nft_object 1109d152159bSFlorian Westphal * 1110d152159bSFlorian Westphal * @name: name of the stateful object to look up 1111d152159bSFlorian Westphal * @table: table the object belongs to 1112d152159bSFlorian Westphal */ 1113d152159bSFlorian Westphal struct nft_object_hash_key { 1114d152159bSFlorian Westphal const char *name; 1115d152159bSFlorian Westphal const struct nft_table *table; 1116d152159bSFlorian Westphal }; 1117d152159bSFlorian Westphal 1118d152159bSFlorian Westphal /** 1119e5009240SPablo Neira Ayuso * struct nft_object - nf_tables stateful object 1120e5009240SPablo Neira Ayuso * 1121e5009240SPablo Neira Ayuso * @list: table stateful object list node 1122d152159bSFlorian Westphal * @key: keys that identify this object 11234d44175aSFlorian Westphal * @rhlhead: nft_objname_ht node 1124e5009240SPablo Neira Ayuso * @genmask: generation mask 1125e5009240SPablo Neira Ayuso * @use: number of references to this stateful object 11263ecbfd65SHarsha Sharma * @handle: unique object handle 1127dfc46034SPablo M. Bermudo Garay * @ops: object operations 11283ecbfd65SHarsha Sharma * @data: object data, layout depends on type 1129e5009240SPablo Neira Ayuso */ 1130e5009240SPablo Neira Ayuso struct nft_object { 1131e5009240SPablo Neira Ayuso struct list_head list; 11324d44175aSFlorian Westphal struct rhlist_head rhlhead; 1133d152159bSFlorian Westphal struct nft_object_hash_key key; 1134e5009240SPablo Neira Ayuso u32 genmask:2, 1135e5009240SPablo Neira Ayuso use:30; 11363ecbfd65SHarsha Sharma u64 handle; 1137b131c964SJose M. Guisado Gomez u16 udlen; 1138b131c964SJose M. Guisado Gomez u8 *udata; 1139e5009240SPablo Neira Ayuso /* runtime data below here */ 1140dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops ____cacheline_aligned; 1141e5009240SPablo Neira Ayuso unsigned char data[] 1142e5009240SPablo Neira Ayuso __attribute__((aligned(__alignof__(u64)))); 1143e5009240SPablo Neira Ayuso }; 1144e5009240SPablo Neira Ayuso 1145e5009240SPablo Neira Ayuso static inline void *nft_obj_data(const struct nft_object *obj) 1146e5009240SPablo Neira Ayuso { 1147e5009240SPablo Neira Ayuso return (void *)obj->data; 1148e5009240SPablo Neira Ayuso } 1149e5009240SPablo Neira Ayuso 1150e5009240SPablo Neira Ayuso #define nft_expr_obj(expr) *((struct nft_object **)nft_expr_priv(expr)) 1151e5009240SPablo Neira Ayuso 11524d44175aSFlorian Westphal struct nft_object *nft_obj_lookup(const struct net *net, 11534d44175aSFlorian Westphal const struct nft_table *table, 1154e5009240SPablo Neira Ayuso const struct nlattr *nla, u32 objtype, 1155e5009240SPablo Neira Ayuso u8 genmask); 1156e5009240SPablo Neira Ayuso 1157d152159bSFlorian Westphal void nft_obj_notify(struct net *net, const struct nft_table *table, 11582599e989SPablo Neira Ayuso struct nft_object *obj, u32 portid, u32 seq, 11592599e989SPablo Neira Ayuso int event, int family, int report, gfp_t gfp); 11602599e989SPablo Neira Ayuso 1161e5009240SPablo Neira Ayuso /** 1162e5009240SPablo Neira Ayuso * struct nft_object_type - stateful object type 1163e5009240SPablo Neira Ayuso * 1164dfc46034SPablo M. Bermudo Garay * @select_ops: function to select nft_object_ops 1165dfc46034SPablo M. Bermudo Garay * @ops: default ops, used when no select_ops functions is present 1166e5009240SPablo Neira Ayuso * @list: list node in list of object types 1167e5009240SPablo Neira Ayuso * @type: stateful object numeric type 1168e5009240SPablo Neira Ayuso * @owner: module owner 1169e5009240SPablo Neira Ayuso * @maxattr: maximum netlink attribute 1170e5009240SPablo Neira Ayuso * @policy: netlink attribute policy 1171dfc46034SPablo M. Bermudo Garay */ 1172dfc46034SPablo M. Bermudo Garay struct nft_object_type { 1173dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *(*select_ops)(const struct nft_ctx *, 1174dfc46034SPablo M. Bermudo Garay const struct nlattr * const tb[]); 1175dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops; 1176dfc46034SPablo M. Bermudo Garay struct list_head list; 1177dfc46034SPablo M. Bermudo Garay u32 type; 1178dfc46034SPablo M. Bermudo Garay unsigned int maxattr; 1179dfc46034SPablo M. Bermudo Garay struct module *owner; 1180dfc46034SPablo M. Bermudo Garay const struct nla_policy *policy; 1181dfc46034SPablo M. Bermudo Garay }; 1182dfc46034SPablo M. Bermudo Garay 1183dfc46034SPablo M. Bermudo Garay /** 1184dfc46034SPablo M. Bermudo Garay * struct nft_object_ops - stateful object operations 1185dfc46034SPablo M. Bermudo Garay * 1186dfc46034SPablo M. Bermudo Garay * @eval: stateful object evaluation function 1187dfc46034SPablo M. Bermudo Garay * @size: stateful object size 1188e5009240SPablo Neira Ayuso * @init: initialize object from netlink attributes 1189e5009240SPablo Neira Ayuso * @destroy: release existing stateful object 1190e5009240SPablo Neira Ayuso * @dump: netlink dump stateful object 1191d62d0ba9SFernando Fernandez Mancera * @update: update stateful object 1192e5009240SPablo Neira Ayuso */ 1193dfc46034SPablo M. Bermudo Garay struct nft_object_ops { 1194e5009240SPablo Neira Ayuso void (*eval)(struct nft_object *obj, 1195e5009240SPablo Neira Ayuso struct nft_regs *regs, 1196e5009240SPablo Neira Ayuso const struct nft_pktinfo *pkt); 1197e5009240SPablo Neira Ayuso unsigned int size; 119884fba055SFlorian Westphal int (*init)(const struct nft_ctx *ctx, 119984fba055SFlorian Westphal const struct nlattr *const tb[], 1200e5009240SPablo Neira Ayuso struct nft_object *obj); 120100bfb320SPablo Neira Ayuso void (*destroy)(const struct nft_ctx *ctx, 120200bfb320SPablo Neira Ayuso struct nft_object *obj); 1203e5009240SPablo Neira Ayuso int (*dump)(struct sk_buff *skb, 120443da04a5SPablo Neira Ayuso struct nft_object *obj, 120543da04a5SPablo Neira Ayuso bool reset); 1206d62d0ba9SFernando Fernandez Mancera void (*update)(struct nft_object *obj, 1207d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj); 1208dfc46034SPablo M. Bermudo Garay const struct nft_object_type *type; 1209e5009240SPablo Neira Ayuso }; 1210e5009240SPablo Neira Ayuso 1211e5009240SPablo Neira Ayuso int nft_register_obj(struct nft_object_type *obj_type); 1212e5009240SPablo Neira Ayuso void nft_unregister_obj(struct nft_object_type *obj_type); 1213e5009240SPablo Neira Ayuso 1214cb662ac6SPablo Neira Ayuso #define NFT_NETDEVICE_MAX 256 1215d92191aaSPablo Neira Ayuso 1216e5009240SPablo Neira Ayuso /** 12173b49e2e9SPablo Neira Ayuso * struct nft_flowtable - nf_tables flow table 12183b49e2e9SPablo Neira Ayuso * 12193b49e2e9SPablo Neira Ayuso * @list: flow table list node in table list 12203b49e2e9SPablo Neira Ayuso * @table: the table the flow table is contained in 12213b49e2e9SPablo Neira Ayuso * @name: name of this flow table 12223b49e2e9SPablo Neira Ayuso * @hooknum: hook number 12233b49e2e9SPablo Neira Ayuso * @ops_len: number of hooks in array 12243b49e2e9SPablo Neira Ayuso * @genmask: generation mask 12253b49e2e9SPablo Neira Ayuso * @use: number of references to this flow table 12263ecbfd65SHarsha Sharma * @handle: unique object handle 1227d92191aaSPablo Neira Ayuso * @dev_name: array of device names 12283b49e2e9SPablo Neira Ayuso * @data: rhashtable and garbage collector 12293b49e2e9SPablo Neira Ayuso * @ops: array of hooks 12303b49e2e9SPablo Neira Ayuso */ 12313b49e2e9SPablo Neira Ayuso struct nft_flowtable { 12323b49e2e9SPablo Neira Ayuso struct list_head list; 12333b49e2e9SPablo Neira Ayuso struct nft_table *table; 12343b49e2e9SPablo Neira Ayuso char *name; 12353b49e2e9SPablo Neira Ayuso int hooknum; 12363b49e2e9SPablo Neira Ayuso int ops_len; 12373b49e2e9SPablo Neira Ayuso u32 genmask:2, 12383b49e2e9SPablo Neira Ayuso use:30; 12393ecbfd65SHarsha Sharma u64 handle; 12403b49e2e9SPablo Neira Ayuso /* runtime data below here */ 12413f0465a9SPablo Neira Ayuso struct list_head hook_list ____cacheline_aligned; 12423b49e2e9SPablo Neira Ayuso struct nf_flowtable data; 12433b49e2e9SPablo Neira Ayuso }; 12443b49e2e9SPablo Neira Ayuso 1245cac20fcdSPablo Neira Ayuso struct nft_flowtable *nft_flowtable_lookup(const struct nft_table *table, 12463b49e2e9SPablo Neira Ayuso const struct nlattr *nla, 12473b49e2e9SPablo Neira Ayuso u8 genmask); 12483b49e2e9SPablo Neira Ayuso 12499b05b6e1SLaura Garcia Liebana void nf_tables_deactivate_flowtable(const struct nft_ctx *ctx, 12509b05b6e1SLaura Garcia Liebana struct nft_flowtable *flowtable, 12519b05b6e1SLaura Garcia Liebana enum nft_trans_phase phase); 12529b05b6e1SLaura Garcia Liebana 12533b49e2e9SPablo Neira Ayuso void nft_register_flowtable_type(struct nf_flowtable_type *type); 12543b49e2e9SPablo Neira Ayuso void nft_unregister_flowtable_type(struct nf_flowtable_type *type); 12553b49e2e9SPablo Neira Ayuso 12563b49e2e9SPablo Neira Ayuso /** 125733d5a7b1SFlorian Westphal * struct nft_traceinfo - nft tracing information and state 125833d5a7b1SFlorian Westphal * 125933d5a7b1SFlorian Westphal * @pkt: pktinfo currently processed 126033d5a7b1SFlorian Westphal * @basechain: base chain currently processed 126133d5a7b1SFlorian Westphal * @chain: chain currently processed 126233d5a7b1SFlorian Westphal * @rule: rule that was evaluated 126333d5a7b1SFlorian Westphal * @verdict: verdict given by rule 126433d5a7b1SFlorian Westphal * @type: event type (enum nft_trace_types) 126533d5a7b1SFlorian Westphal * @packet_dumped: packet headers sent in a previous traceinfo message 126633d5a7b1SFlorian Westphal * @trace: other struct members are initialised 126733d5a7b1SFlorian Westphal */ 126833d5a7b1SFlorian Westphal struct nft_traceinfo { 126933d5a7b1SFlorian Westphal const struct nft_pktinfo *pkt; 127033d5a7b1SFlorian Westphal const struct nft_base_chain *basechain; 127133d5a7b1SFlorian Westphal const struct nft_chain *chain; 127233d5a7b1SFlorian Westphal const struct nft_rule *rule; 127333d5a7b1SFlorian Westphal const struct nft_verdict *verdict; 127433d5a7b1SFlorian Westphal enum nft_trace_types type; 127533d5a7b1SFlorian Westphal bool packet_dumped; 127633d5a7b1SFlorian Westphal bool trace; 127733d5a7b1SFlorian Westphal }; 127833d5a7b1SFlorian Westphal 127933d5a7b1SFlorian Westphal void nft_trace_init(struct nft_traceinfo *info, const struct nft_pktinfo *pkt, 128033d5a7b1SFlorian Westphal const struct nft_verdict *verdict, 128133d5a7b1SFlorian Westphal const struct nft_chain *basechain); 128233d5a7b1SFlorian Westphal 128333d5a7b1SFlorian Westphal void nft_trace_notify(struct nft_traceinfo *info); 128433d5a7b1SFlorian Westphal 12859370761cSPablo Neira Ayuso #define MODULE_ALIAS_NFT_CHAIN(family, name) \ 12869370761cSPablo Neira Ayuso MODULE_ALIAS("nft-chain-" __stringify(family) "-" name) 128796518518SPatrick McHardy 128864d46806SPatrick McHardy #define MODULE_ALIAS_NFT_AF_EXPR(family, name) \ 128964d46806SPatrick McHardy MODULE_ALIAS("nft-expr-" __stringify(family) "-" name) 129064d46806SPatrick McHardy 129196518518SPatrick McHardy #define MODULE_ALIAS_NFT_EXPR(name) \ 129296518518SPatrick McHardy MODULE_ALIAS("nft-expr-" name) 129396518518SPatrick McHardy 1294e5009240SPablo Neira Ayuso #define MODULE_ALIAS_NFT_OBJ(type) \ 1295e5009240SPablo Neira Ayuso MODULE_ALIAS("nft-obj-" __stringify(type)) 1296e5009240SPablo Neira Ayuso 129747e640afSJeremy Sowden #if IS_ENABLED(CONFIG_NF_TABLES) 129847e640afSJeremy Sowden 1299ea4bd995SPatrick McHardy /* 1300ea4bd995SPatrick McHardy * The gencursor defines two generations, the currently active and the 1301ea4bd995SPatrick McHardy * next one. Objects contain a bitmask of 2 bits specifying the generations 1302ea4bd995SPatrick McHardy * they're active in. A set bit means they're inactive in the generation 1303ea4bd995SPatrick McHardy * represented by that bit. 1304ea4bd995SPatrick McHardy * 1305ea4bd995SPatrick McHardy * New objects start out as inactive in the current and active in the 1306ea4bd995SPatrick McHardy * next generation. When committing the ruleset the bitmask is cleared, 1307ea4bd995SPatrick McHardy * meaning they're active in all generations. When removing an object, 1308ea4bd995SPatrick McHardy * it is set inactive in the next generation. After committing the ruleset, 1309ea4bd995SPatrick McHardy * the objects are removed. 1310ea4bd995SPatrick McHardy */ 1311ea4bd995SPatrick McHardy static inline unsigned int nft_gencursor_next(const struct net *net) 1312ea4bd995SPatrick McHardy { 1313ea4bd995SPatrick McHardy return net->nft.gencursor + 1 == 1 ? 1 : 0; 1314ea4bd995SPatrick McHardy } 1315ea4bd995SPatrick McHardy 1316ea4bd995SPatrick McHardy static inline u8 nft_genmask_next(const struct net *net) 1317ea4bd995SPatrick McHardy { 1318ea4bd995SPatrick McHardy return 1 << nft_gencursor_next(net); 1319ea4bd995SPatrick McHardy } 1320ea4bd995SPatrick McHardy 1321ea4bd995SPatrick McHardy static inline u8 nft_genmask_cur(const struct net *net) 1322ea4bd995SPatrick McHardy { 132314cd5d4aSMark Rutland /* Use READ_ONCE() to prevent refetching the value for atomicity */ 132414cd5d4aSMark Rutland return 1 << READ_ONCE(net->nft.gencursor); 1325ea4bd995SPatrick McHardy } 1326ea4bd995SPatrick McHardy 132722fe54d5SPatrick McHardy #define NFT_GENMASK_ANY ((1 << 0) | (1 << 1)) 132822fe54d5SPatrick McHardy 1329cc02e457SPatrick McHardy /* 1330889f7ee7SPablo Neira Ayuso * Generic transaction helpers 1331889f7ee7SPablo Neira Ayuso */ 1332889f7ee7SPablo Neira Ayuso 1333889f7ee7SPablo Neira Ayuso /* Check if this object is currently active. */ 1334889f7ee7SPablo Neira Ayuso #define nft_is_active(__net, __obj) \ 1335889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_cur(__net)) == 0) 1336889f7ee7SPablo Neira Ayuso 1337889f7ee7SPablo Neira Ayuso /* Check if this object is active in the next generation. */ 1338889f7ee7SPablo Neira Ayuso #define nft_is_active_next(__net, __obj) \ 1339889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_next(__net)) == 0) 1340889f7ee7SPablo Neira Ayuso 1341889f7ee7SPablo Neira Ayuso /* This object becomes active in the next generation. */ 1342889f7ee7SPablo Neira Ayuso #define nft_activate_next(__net, __obj) \ 1343889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_cur(__net) 1344889f7ee7SPablo Neira Ayuso 1345889f7ee7SPablo Neira Ayuso /* This object becomes inactive in the next generation. */ 1346889f7ee7SPablo Neira Ayuso #define nft_deactivate_next(__net, __obj) \ 1347889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_next(__net) 1348889f7ee7SPablo Neira Ayuso 1349889f7ee7SPablo Neira Ayuso /* After committing the ruleset, clear the stale generation bit. */ 1350889f7ee7SPablo Neira Ayuso #define nft_clear(__net, __obj) \ 1351889f7ee7SPablo Neira Ayuso (__obj)->genmask &= ~nft_genmask_next(__net) 1352f2a6d766SPablo Neira Ayuso #define nft_active_genmask(__obj, __genmask) \ 1353f2a6d766SPablo Neira Ayuso !((__obj)->genmask & __genmask) 1354889f7ee7SPablo Neira Ayuso 1355889f7ee7SPablo Neira Ayuso /* 1356cc02e457SPatrick McHardy * Set element transaction helpers 1357cc02e457SPatrick McHardy */ 1358cc02e457SPatrick McHardy 1359cc02e457SPatrick McHardy static inline bool nft_set_elem_active(const struct nft_set_ext *ext, 1360cc02e457SPatrick McHardy u8 genmask) 1361cc02e457SPatrick McHardy { 1362cc02e457SPatrick McHardy return !(ext->genmask & genmask); 1363cc02e457SPatrick McHardy } 1364cc02e457SPatrick McHardy 136542a55769SPablo Neira Ayuso static inline void nft_set_elem_change_active(const struct net *net, 136642a55769SPablo Neira Ayuso const struct nft_set *set, 1367cc02e457SPatrick McHardy struct nft_set_ext *ext) 1368cc02e457SPatrick McHardy { 136942a55769SPablo Neira Ayuso ext->genmask ^= nft_genmask_next(net); 1370cc02e457SPatrick McHardy } 1371cc02e457SPatrick McHardy 137247e640afSJeremy Sowden #endif /* IS_ENABLED(CONFIG_NF_TABLES) */ 137347e640afSJeremy Sowden 137469086658SPatrick McHardy /* 137569086658SPatrick McHardy * We use a free bit in the genmask field to indicate the element 137669086658SPatrick McHardy * is busy, meaning it is currently being processed either by 137769086658SPatrick McHardy * the netlink API or GC. 137869086658SPatrick McHardy * 137969086658SPatrick McHardy * Even though the genmask is only a single byte wide, this works 138069086658SPatrick McHardy * because the extension structure if fully constant once initialized, 138169086658SPatrick McHardy * so there are no non-atomic write accesses unless it is already 138269086658SPatrick McHardy * marked busy. 138369086658SPatrick McHardy */ 138469086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_MASK (1 << 2) 138569086658SPatrick McHardy 138669086658SPatrick McHardy #if defined(__LITTLE_ENDIAN_BITFIELD) 138769086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT 2 138869086658SPatrick McHardy #elif defined(__BIG_ENDIAN_BITFIELD) 138969086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT (BITS_PER_LONG - BITS_PER_BYTE + 2) 139069086658SPatrick McHardy #else 139169086658SPatrick McHardy #error 139269086658SPatrick McHardy #endif 139369086658SPatrick McHardy 139469086658SPatrick McHardy static inline int nft_set_elem_mark_busy(struct nft_set_ext *ext) 139569086658SPatrick McHardy { 139669086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 139769086658SPatrick McHardy 139869086658SPatrick McHardy BUILD_BUG_ON(offsetof(struct nft_set_ext, genmask) != 0); 139969086658SPatrick McHardy return test_and_set_bit(NFT_SET_ELEM_BUSY_BIT, word); 140069086658SPatrick McHardy } 140169086658SPatrick McHardy 140269086658SPatrick McHardy static inline void nft_set_elem_clear_busy(struct nft_set_ext *ext) 140369086658SPatrick McHardy { 140469086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 140569086658SPatrick McHardy 140669086658SPatrick McHardy clear_bit(NFT_SET_ELEM_BUSY_BIT, word); 140769086658SPatrick McHardy } 140869086658SPatrick McHardy 14091a1e1a12SPatrick McHardy /** 14101a1e1a12SPatrick McHardy * struct nft_trans - nf_tables object update in transaction 14111a1e1a12SPatrick McHardy * 14121a1e1a12SPatrick McHardy * @list: used internally 14131a1e1a12SPatrick McHardy * @msg_type: message type 14140935d558SFlorian Westphal * @put_net: ctx->net needs to be put 14151a1e1a12SPatrick McHardy * @ctx: transaction context 14161a1e1a12SPatrick McHardy * @data: internal information related to the transaction 14171a1e1a12SPatrick McHardy */ 14181a1e1a12SPatrick McHardy struct nft_trans { 14191a1e1a12SPatrick McHardy struct list_head list; 14201a1e1a12SPatrick McHardy int msg_type; 14210935d558SFlorian Westphal bool put_net; 14221a1e1a12SPatrick McHardy struct nft_ctx ctx; 14236daf1414SGustavo A. R. Silva char data[]; 14241a1e1a12SPatrick McHardy }; 14251a1e1a12SPatrick McHardy 14261a1e1a12SPatrick McHardy struct nft_trans_rule { 14271a1e1a12SPatrick McHardy struct nft_rule *rule; 1428c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow; 14291a94e38dSPablo Neira Ayuso u32 rule_id; 14301a1e1a12SPatrick McHardy }; 14311a1e1a12SPatrick McHardy 14321a1e1a12SPatrick McHardy #define nft_trans_rule(trans) \ 14331a1e1a12SPatrick McHardy (((struct nft_trans_rule *)trans->data)->rule) 1434c9626a2cSPablo Neira Ayuso #define nft_trans_flow_rule(trans) \ 1435c9626a2cSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->flow) 14361a94e38dSPablo Neira Ayuso #define nft_trans_rule_id(trans) \ 14371a94e38dSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->rule_id) 14381a1e1a12SPatrick McHardy 14391a1e1a12SPatrick McHardy struct nft_trans_set { 14401a1e1a12SPatrick McHardy struct nft_set *set; 14411a1e1a12SPatrick McHardy u32 set_id; 14426a0a8d10SPablo Neira Ayuso bool bound; 14431a1e1a12SPatrick McHardy }; 14441a1e1a12SPatrick McHardy 14451a1e1a12SPatrick McHardy #define nft_trans_set(trans) \ 14461a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set) 14471a1e1a12SPatrick McHardy #define nft_trans_set_id(trans) \ 14481a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set_id) 14496a0a8d10SPablo Neira Ayuso #define nft_trans_set_bound(trans) \ 14506a0a8d10SPablo Neira Ayuso (((struct nft_trans_set *)trans->data)->bound) 14511a1e1a12SPatrick McHardy 14521a1e1a12SPatrick McHardy struct nft_trans_chain { 14531a1e1a12SPatrick McHardy bool update; 1454b7263e07SPhil Sutter char *name; 14551a1e1a12SPatrick McHardy struct nft_stats __percpu *stats; 14561a1e1a12SPatrick McHardy u8 policy; 145774cccc3dSPablo Neira Ayuso u32 chain_id; 14581a1e1a12SPatrick McHardy }; 14591a1e1a12SPatrick McHardy 14601a1e1a12SPatrick McHardy #define nft_trans_chain_update(trans) \ 14611a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->update) 14621a1e1a12SPatrick McHardy #define nft_trans_chain_name(trans) \ 14631a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->name) 14641a1e1a12SPatrick McHardy #define nft_trans_chain_stats(trans) \ 14651a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->stats) 14661a1e1a12SPatrick McHardy #define nft_trans_chain_policy(trans) \ 14671a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->policy) 146874cccc3dSPablo Neira Ayuso #define nft_trans_chain_id(trans) \ 146974cccc3dSPablo Neira Ayuso (((struct nft_trans_chain *)trans->data)->chain_id) 14701a1e1a12SPatrick McHardy 14711a1e1a12SPatrick McHardy struct nft_trans_table { 14721a1e1a12SPatrick McHardy bool update; 14731a1e1a12SPatrick McHardy bool enable; 14741a1e1a12SPatrick McHardy }; 14751a1e1a12SPatrick McHardy 14761a1e1a12SPatrick McHardy #define nft_trans_table_update(trans) \ 14771a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->update) 14781a1e1a12SPatrick McHardy #define nft_trans_table_enable(trans) \ 14791a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->enable) 14801a1e1a12SPatrick McHardy 14811a1e1a12SPatrick McHardy struct nft_trans_elem { 14821a1e1a12SPatrick McHardy struct nft_set *set; 14831a1e1a12SPatrick McHardy struct nft_set_elem elem; 14846a0a8d10SPablo Neira Ayuso bool bound; 14851a1e1a12SPatrick McHardy }; 14861a1e1a12SPatrick McHardy 14871a1e1a12SPatrick McHardy #define nft_trans_elem_set(trans) \ 14881a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->set) 14891a1e1a12SPatrick McHardy #define nft_trans_elem(trans) \ 14901a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->elem) 14916a0a8d10SPablo Neira Ayuso #define nft_trans_elem_set_bound(trans) \ 14926a0a8d10SPablo Neira Ayuso (((struct nft_trans_elem *)trans->data)->bound) 14931a1e1a12SPatrick McHardy 1494e5009240SPablo Neira Ayuso struct nft_trans_obj { 1495e5009240SPablo Neira Ayuso struct nft_object *obj; 1496d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj; 1497d62d0ba9SFernando Fernandez Mancera bool update; 1498e5009240SPablo Neira Ayuso }; 1499e5009240SPablo Neira Ayuso 1500e5009240SPablo Neira Ayuso #define nft_trans_obj(trans) \ 1501e5009240SPablo Neira Ayuso (((struct nft_trans_obj *)trans->data)->obj) 1502d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_newobj(trans) \ 1503d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->newobj) 1504d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_update(trans) \ 1505d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->update) 1506e5009240SPablo Neira Ayuso 15073b49e2e9SPablo Neira Ayuso struct nft_trans_flowtable { 15083b49e2e9SPablo Neira Ayuso struct nft_flowtable *flowtable; 150978d9f48fSPablo Neira Ayuso bool update; 151078d9f48fSPablo Neira Ayuso struct list_head hook_list; 15113b49e2e9SPablo Neira Ayuso }; 15123b49e2e9SPablo Neira Ayuso 15133b49e2e9SPablo Neira Ayuso #define nft_trans_flowtable(trans) \ 15143b49e2e9SPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->flowtable) 151578d9f48fSPablo Neira Ayuso #define nft_trans_flowtable_update(trans) \ 151678d9f48fSPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->update) 151778d9f48fSPablo Neira Ayuso #define nft_trans_flowtable_hooks(trans) \ 151878d9f48fSPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->hook_list) 15193b49e2e9SPablo Neira Ayuso 152002c7b25eSPablo Neira Ayuso int __init nft_chain_filter_init(void); 1521d209df3eSFlorian Westphal void nft_chain_filter_fini(void); 152202c7b25eSPablo Neira Ayuso 1523c1deb065SFlorian Westphal void __init nft_chain_route_init(void); 1524c1deb065SFlorian Westphal void nft_chain_route_fini(void); 1525ffe8923fSFlorian Westphal 1526ffe8923fSFlorian Westphal void nf_tables_trans_destroy_flush_work(void); 1527917d80d3SPablo Neira Ayuso 1528917d80d3SPablo Neira Ayuso int nf_msecs_to_jiffies64(const struct nlattr *nla, u64 *result); 1529917d80d3SPablo Neira Ayuso __be64 nf_jiffies64_to_msecs(u64 input); 1530917d80d3SPablo Neira Ayuso 153196518518SPatrick McHardy #endif /* _NET_NF_TABLES_H */ 1532