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 206*4f16d25cSPablo Neira Ayuso int nft_parse_register_load(const struct nlattr *attr, u8 *sreg, u32 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 30892b211a2SPablo Neira Ayuso #define NFT_EXPR_MAXATTR 16 30992b211a2SPablo Neira Ayuso #define NFT_EXPR_SIZE(size) (sizeof(struct nft_expr) + \ 31092b211a2SPablo Neira Ayuso ALIGN(size, __alignof__(struct nft_expr))) 31192b211a2SPablo Neira Ayuso 31292b211a2SPablo Neira Ayuso /** 31392b211a2SPablo Neira Ayuso * struct nft_expr - nf_tables expression 31492b211a2SPablo Neira Ayuso * 31592b211a2SPablo Neira Ayuso * @ops: expression ops 31692b211a2SPablo Neira Ayuso * @data: expression private data 31792b211a2SPablo Neira Ayuso */ 31892b211a2SPablo Neira Ayuso struct nft_expr { 31992b211a2SPablo Neira Ayuso const struct nft_expr_ops *ops; 32092b211a2SPablo Neira Ayuso unsigned char data[] 32192b211a2SPablo Neira Ayuso __attribute__((aligned(__alignof__(u64)))); 32292b211a2SPablo Neira Ayuso }; 32392b211a2SPablo Neira Ayuso 32492b211a2SPablo Neira Ayuso static inline void *nft_expr_priv(const struct nft_expr *expr) 32592b211a2SPablo Neira Ayuso { 32692b211a2SPablo Neira Ayuso return (void *)expr->data; 32792b211a2SPablo Neira Ayuso } 32892b211a2SPablo Neira Ayuso 32992b211a2SPablo Neira Ayuso int nft_expr_clone(struct nft_expr *dst, struct nft_expr *src); 33092b211a2SPablo Neira Ayuso void nft_expr_destroy(const struct nft_ctx *ctx, struct nft_expr *expr); 33192b211a2SPablo Neira Ayuso int nft_expr_dump(struct sk_buff *skb, unsigned int attr, 33292b211a2SPablo Neira Ayuso const struct nft_expr *expr); 33392b211a2SPablo Neira Ayuso 334b2832dd6SPatrick McHardy struct nft_set_ext; 335b2832dd6SPatrick McHardy 336c50b960cSPatrick McHardy /** 33720a69341SPatrick McHardy * struct nft_set_ops - nf_tables set operations 33820a69341SPatrick McHardy * 33920a69341SPatrick McHardy * @lookup: look up an element within the set 340d0a8d877SAnder Juaristi * @update: update an element if exists, add it if doesn't exist 341d0a8d877SAnder Juaristi * @delete: delete an element 34220a69341SPatrick McHardy * @insert: insert new element into set 343cc02e457SPatrick McHardy * @activate: activate new element in the next generation 3448411b644SPablo Neira Ayuso * @deactivate: lookup for element and deactivate it in the next generation 3451ba1c414SPablo Neira Ayuso * @flush: deactivate element in the next generation 34620a69341SPatrick McHardy * @remove: remove element from set 347d0a8d877SAnder Juaristi * @walk: iterate over all set elements 348ba0e4d99SPablo Neira Ayuso * @get: get set elements 34920a69341SPatrick McHardy * @privsize: function to return size of set private data 35020a69341SPatrick McHardy * @init: initialize private data of new set instance 35120a69341SPatrick McHardy * @destroy: destroy private data of set instance 352fe2811ebSPatrick McHardy * @elemsize: element private size 353d0a8d877SAnder Juaristi * 354d0a8d877SAnder Juaristi * Operations lookup, update and delete have simpler interfaces, are faster 355d0a8d877SAnder Juaristi * and currently only used in the packet path. All the rest are slower, 356d0a8d877SAnder Juaristi * control plane functions. 35720a69341SPatrick McHardy */ 35820a69341SPatrick McHardy struct nft_set_ops { 35942a55769SPablo Neira Ayuso bool (*lookup)(const struct net *net, 36042a55769SPablo Neira Ayuso const struct nft_set *set, 3618cd8937aSPatrick McHardy const u32 *key, 362b2832dd6SPatrick McHardy const struct nft_set_ext **ext); 36322fe54d5SPatrick McHardy bool (*update)(struct nft_set *set, 3648cd8937aSPatrick McHardy const u32 *key, 36522fe54d5SPatrick McHardy void *(*new)(struct nft_set *, 36622fe54d5SPatrick McHardy const struct nft_expr *, 367a55e22e9SPatrick McHardy struct nft_regs *), 36822fe54d5SPatrick McHardy const struct nft_expr *expr, 369a55e22e9SPatrick McHardy struct nft_regs *regs, 37022fe54d5SPatrick McHardy const struct nft_set_ext **ext); 371d0a8d877SAnder Juaristi bool (*delete)(const struct nft_set *set, 372d0a8d877SAnder Juaristi const u32 *key); 37322fe54d5SPatrick McHardy 37442a55769SPablo Neira Ayuso int (*insert)(const struct net *net, 37542a55769SPablo Neira Ayuso const struct nft_set *set, 376c016c7e4SPablo Neira Ayuso const struct nft_set_elem *elem, 377c016c7e4SPablo Neira Ayuso struct nft_set_ext **ext); 37842a55769SPablo Neira Ayuso void (*activate)(const struct net *net, 37942a55769SPablo Neira Ayuso const struct nft_set *set, 380cc02e457SPatrick McHardy const struct nft_set_elem *elem); 38142a55769SPablo Neira Ayuso void * (*deactivate)(const struct net *net, 38242a55769SPablo Neira Ayuso const struct nft_set *set, 383cc02e457SPatrick McHardy const struct nft_set_elem *elem); 3841ba1c414SPablo Neira Ayuso bool (*flush)(const struct net *net, 3858411b644SPablo Neira Ayuso const struct nft_set *set, 3868411b644SPablo Neira Ayuso void *priv); 3875cb82a38SPablo Neira Ayuso void (*remove)(const struct net *net, 3885cb82a38SPablo Neira Ayuso const struct nft_set *set, 38920a69341SPatrick McHardy const struct nft_set_elem *elem); 39020a69341SPatrick McHardy void (*walk)(const struct nft_ctx *ctx, 391de70185dSPablo Neira Ayuso struct nft_set *set, 39220a69341SPatrick McHardy struct nft_set_iter *iter); 393ba0e4d99SPablo Neira Ayuso void * (*get)(const struct net *net, 394ba0e4d99SPablo Neira Ayuso const struct nft_set *set, 395ba0e4d99SPablo Neira Ayuso const struct nft_set_elem *elem, 396ba0e4d99SPablo Neira Ayuso unsigned int flags); 39720a69341SPatrick McHardy 3984ef360ddSTaehee Yoo u64 (*privsize)(const struct nlattr * const nla[], 399347b408dSPablo Neira Ayuso const struct nft_set_desc *desc); 400c50b960cSPatrick McHardy bool (*estimate)(const struct nft_set_desc *desc, 401c50b960cSPatrick McHardy u32 features, 402c50b960cSPatrick McHardy struct nft_set_estimate *est); 40320a69341SPatrick McHardy int (*init)(const struct nft_set *set, 404c50b960cSPatrick McHardy const struct nft_set_desc *desc, 40520a69341SPatrick McHardy const struct nlattr * const nla[]); 40620a69341SPatrick McHardy void (*destroy)(const struct nft_set *set); 40779b174adSPablo Neira Ayuso void (*gc_init)(const struct nft_set *set); 40820a69341SPatrick McHardy 409fe2811ebSPatrick McHardy unsigned int elemsize; 41020a69341SPatrick McHardy }; 41120a69341SPatrick McHardy 41271cc0873SPhil Sutter /** 41371cc0873SPhil Sutter * struct nft_set_type - nf_tables set type 41471cc0873SPhil Sutter * 41571cc0873SPhil Sutter * @ops: set ops for this type 41671cc0873SPhil Sutter * @features: features supported by the implementation 41771cc0873SPhil Sutter */ 41871cc0873SPhil Sutter struct nft_set_type { 41971cc0873SPhil Sutter const struct nft_set_ops ops; 42071cc0873SPhil Sutter u32 features; 42171cc0873SPhil Sutter }; 42271cc0873SPhil Sutter #define to_set_type(o) container_of(o, struct nft_set_type, ops) 42371cc0873SPhil Sutter 424563125a7SPablo Neira Ayuso struct nft_set_elem_expr { 425563125a7SPablo Neira Ayuso u8 size; 426563125a7SPablo Neira Ayuso unsigned char data[] 427563125a7SPablo Neira Ayuso __attribute__((aligned(__alignof__(struct nft_expr)))); 428563125a7SPablo Neira Ayuso }; 429563125a7SPablo Neira Ayuso 430563125a7SPablo Neira Ayuso #define nft_setelem_expr_at(__elem_expr, __offset) \ 431563125a7SPablo Neira Ayuso ((struct nft_expr *)&__elem_expr->data[__offset]) 432563125a7SPablo Neira Ayuso 433563125a7SPablo Neira Ayuso #define nft_setelem_expr_foreach(__expr, __elem_expr, __size) \ 434563125a7SPablo Neira Ayuso for (__expr = nft_setelem_expr_at(__elem_expr, 0), __size = 0; \ 435563125a7SPablo Neira Ayuso __size < (__elem_expr)->size; \ 436563125a7SPablo Neira Ayuso __size += (__expr)->ops->size, __expr = ((void *)(__expr)) + (__expr)->ops->size) 437563125a7SPablo Neira Ayuso 4388cfd9b0fSPablo Neira Ayuso #define NFT_SET_EXPR_MAX 2 4398cfd9b0fSPablo Neira Ayuso 44020a69341SPatrick McHardy /** 44120a69341SPatrick McHardy * struct nft_set - nf_tables set instance 44220a69341SPatrick McHardy * 44320a69341SPatrick McHardy * @list: table set list node 44420a69341SPatrick McHardy * @bindings: list of set bindings 4453453c927SPablo Neira Ayuso * @table: table this set belongs to 4463453c927SPablo Neira Ayuso * @net: netnamespace this set belongs to 44720a69341SPatrick McHardy * @name: name of the set 4483ecbfd65SHarsha Sharma * @handle: unique handle of the set 44920a69341SPatrick McHardy * @ktype: key type (numeric type defined by userspace, not used in the kernel) 45020a69341SPatrick McHardy * @dtype: data type (verdict or numeric type defined by userspace) 4518aeff920SPablo Neira Ayuso * @objtype: object type (see NFT_OBJECT_* definitions) 452c50b960cSPatrick McHardy * @size: maximum set size 453f3a2181eSStefano Brivio * @field_len: length of each field in concatenation, bytes 454f3a2181eSStefano Brivio * @field_count: number of concatenated fields in element 455273fe3f1SPablo Neira Ayuso * @use: number of rules references to this set 456c50b960cSPatrick McHardy * @nelems: number of elements 4573dd0673aSPatrick McHardy * @ndeact: number of deactivated elements queued for removal 458d3e2a111SAnders K. Pedersen * @timeout: default timeout value in jiffies 459761da293SPatrick McHardy * @gc_int: garbage collection interval in msecs 4609363dc4bSArturo Borrero * @policy: set parameterization (see enum nft_set_policies) 461e6d8ecacSCarlos Falgueras García * @udlen: user data length 462e6d8ecacSCarlos Falgueras García * @udata: user data 46365038428SPablo Neira Ayuso * @expr: stateful expression 46420a69341SPatrick McHardy * @ops: set ops 46520a69341SPatrick McHardy * @flags: set flags 46637a9cc52SPablo Neira Ayuso * @genmask: generation mask 46720a69341SPatrick McHardy * @klen: key length 46820a69341SPatrick McHardy * @dlen: data length 46920a69341SPatrick McHardy * @data: private set data 47020a69341SPatrick McHardy */ 47120a69341SPatrick McHardy struct nft_set { 47220a69341SPatrick McHardy struct list_head list; 47320a69341SPatrick McHardy struct list_head bindings; 4743453c927SPablo Neira Ayuso struct nft_table *table; 4753453c927SPablo Neira Ayuso possible_net_t net; 47638745490SPhil Sutter char *name; 4773ecbfd65SHarsha Sharma u64 handle; 47820a69341SPatrick McHardy u32 ktype; 47920a69341SPatrick McHardy u32 dtype; 4808aeff920SPablo Neira Ayuso u32 objtype; 481c50b960cSPatrick McHardy u32 size; 482f3a2181eSStefano Brivio u8 field_len[NFT_REG32_COUNT]; 483f3a2181eSStefano Brivio u8 field_count; 484273fe3f1SPablo Neira Ayuso u32 use; 4853dd0673aSPatrick McHardy atomic_t nelems; 4863dd0673aSPatrick McHardy u32 ndeact; 487761da293SPatrick McHardy u64 timeout; 488761da293SPatrick McHardy u32 gc_int; 4899363dc4bSArturo Borrero u16 policy; 490e6d8ecacSCarlos Falgueras García u16 udlen; 491e6d8ecacSCarlos Falgueras García unsigned char *udata; 49220a69341SPatrick McHardy /* runtime data below here */ 49320a69341SPatrick McHardy const struct nft_set_ops *ops ____cacheline_aligned; 4946a0a8d10SPablo Neira Ayuso u16 flags:14, 49537a9cc52SPablo Neira Ayuso genmask:2; 49620a69341SPatrick McHardy u8 klen; 49720a69341SPatrick McHardy u8 dlen; 4988cfd9b0fSPablo Neira Ayuso u8 num_exprs; 4998cfd9b0fSPablo Neira Ayuso struct nft_expr *exprs[NFT_SET_EXPR_MAX]; 50020a69341SPatrick McHardy unsigned char data[] 50120a69341SPatrick McHardy __attribute__((aligned(__alignof__(u64)))); 50220a69341SPatrick McHardy }; 50320a69341SPatrick McHardy 504408070d6SPablo Neira Ayuso static inline bool nft_set_is_anonymous(const struct nft_set *set) 505408070d6SPablo Neira Ayuso { 506408070d6SPablo Neira Ayuso return set->flags & NFT_SET_ANONYMOUS; 507408070d6SPablo Neira Ayuso } 508408070d6SPablo Neira Ayuso 50920a69341SPatrick McHardy static inline void *nft_set_priv(const struct nft_set *set) 51020a69341SPatrick McHardy { 51120a69341SPatrick McHardy return (void *)set->data; 51220a69341SPatrick McHardy } 51320a69341SPatrick McHardy 5149d098292SPatrick McHardy static inline struct nft_set *nft_set_container_of(const void *priv) 5159d098292SPatrick McHardy { 5169d098292SPatrick McHardy return (void *)priv - offsetof(struct nft_set, data); 5179d098292SPatrick McHardy } 5189d098292SPatrick McHardy 51910659cbaSPablo Neira Ayuso struct nft_set *nft_set_lookup_global(const struct net *net, 520c7a72e3fSPablo Neira Ayuso const struct nft_table *table, 521c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_name, 522c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_id, 523c7a72e3fSPablo Neira Ayuso u8 genmask); 52420a69341SPatrick McHardy 525761da293SPatrick McHardy static inline unsigned long nft_set_gc_interval(const struct nft_set *set) 526761da293SPatrick McHardy { 527761da293SPatrick McHardy return set->gc_int ? msecs_to_jiffies(set->gc_int) : HZ; 528761da293SPatrick McHardy } 529761da293SPatrick McHardy 53020a69341SPatrick McHardy /** 53120a69341SPatrick McHardy * struct nft_set_binding - nf_tables set binding 53220a69341SPatrick McHardy * 53320a69341SPatrick McHardy * @list: set bindings list node 53420a69341SPatrick McHardy * @chain: chain containing the rule bound to the set 53511113e19SPatrick McHardy * @flags: set action flags 53620a69341SPatrick McHardy * 53720a69341SPatrick McHardy * A set binding contains all information necessary for validation 53820a69341SPatrick McHardy * of new elements added to a bound set. 53920a69341SPatrick McHardy */ 54020a69341SPatrick McHardy struct nft_set_binding { 54120a69341SPatrick McHardy struct list_head list; 54220a69341SPatrick McHardy const struct nft_chain *chain; 54311113e19SPatrick McHardy u32 flags; 54420a69341SPatrick McHardy }; 54520a69341SPatrick McHardy 546273fe3f1SPablo Neira Ayuso enum nft_trans_phase; 547273fe3f1SPablo Neira Ayuso void nf_tables_deactivate_set(const struct nft_ctx *ctx, struct nft_set *set, 548273fe3f1SPablo Neira Ayuso struct nft_set_binding *binding, 549273fe3f1SPablo Neira Ayuso enum nft_trans_phase phase); 5505eccdfaaSJoe Perches int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, 55120a69341SPatrick McHardy struct nft_set_binding *binding); 552cd5125d8SFlorian Westphal void nf_tables_destroy_set(const struct nft_ctx *ctx, struct nft_set *set); 55320a69341SPatrick McHardy 5543ac4c07aSPatrick McHardy /** 5553ac4c07aSPatrick McHardy * enum nft_set_extensions - set extension type IDs 5563ac4c07aSPatrick McHardy * 5573ac4c07aSPatrick McHardy * @NFT_SET_EXT_KEY: element key 5587b225d0bSPablo Neira Ayuso * @NFT_SET_EXT_KEY_END: upper bound element key, for ranges 5593ac4c07aSPatrick McHardy * @NFT_SET_EXT_DATA: mapping data 5603ac4c07aSPatrick McHardy * @NFT_SET_EXT_FLAGS: element flags 561c3e1b005SPatrick McHardy * @NFT_SET_EXT_TIMEOUT: element timeout 562c3e1b005SPatrick McHardy * @NFT_SET_EXT_EXPIRATION: element expiration time 56368e942e8SPatrick McHardy * @NFT_SET_EXT_USERDATA: user data associated with the element 564563125a7SPablo Neira Ayuso * @NFT_SET_EXT_EXPRESSIONS: expressions assiciated with the element 5658aeff920SPablo Neira Ayuso * @NFT_SET_EXT_OBJREF: stateful object reference associated with element 5663ac4c07aSPatrick McHardy * @NFT_SET_EXT_NUM: number of extension types 5673ac4c07aSPatrick McHardy */ 5683ac4c07aSPatrick McHardy enum nft_set_extensions { 5693ac4c07aSPatrick McHardy NFT_SET_EXT_KEY, 5707b225d0bSPablo Neira Ayuso NFT_SET_EXT_KEY_END, 5713ac4c07aSPatrick McHardy NFT_SET_EXT_DATA, 5723ac4c07aSPatrick McHardy NFT_SET_EXT_FLAGS, 573c3e1b005SPatrick McHardy NFT_SET_EXT_TIMEOUT, 574c3e1b005SPatrick McHardy NFT_SET_EXT_EXPIRATION, 57568e942e8SPatrick McHardy NFT_SET_EXT_USERDATA, 576563125a7SPablo Neira Ayuso NFT_SET_EXT_EXPRESSIONS, 5778aeff920SPablo Neira Ayuso NFT_SET_EXT_OBJREF, 5783ac4c07aSPatrick McHardy NFT_SET_EXT_NUM 5793ac4c07aSPatrick McHardy }; 5803ac4c07aSPatrick McHardy 5813ac4c07aSPatrick McHardy /** 5823ac4c07aSPatrick McHardy * struct nft_set_ext_type - set extension type 5833ac4c07aSPatrick McHardy * 5843ac4c07aSPatrick McHardy * @len: fixed part length of the extension 5853ac4c07aSPatrick McHardy * @align: alignment requirements of the extension 5863ac4c07aSPatrick McHardy */ 5873ac4c07aSPatrick McHardy struct nft_set_ext_type { 5883ac4c07aSPatrick McHardy u8 len; 5893ac4c07aSPatrick McHardy u8 align; 5903ac4c07aSPatrick McHardy }; 5913ac4c07aSPatrick McHardy 5923ac4c07aSPatrick McHardy extern const struct nft_set_ext_type nft_set_ext_types[]; 5933ac4c07aSPatrick McHardy 5943ac4c07aSPatrick McHardy /** 5953ac4c07aSPatrick McHardy * struct nft_set_ext_tmpl - set extension template 5963ac4c07aSPatrick McHardy * 5973ac4c07aSPatrick McHardy * @len: length of extension area 5983ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 5993ac4c07aSPatrick McHardy */ 6003ac4c07aSPatrick McHardy struct nft_set_ext_tmpl { 6013ac4c07aSPatrick McHardy u16 len; 6023ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 6033ac4c07aSPatrick McHardy }; 6043ac4c07aSPatrick McHardy 6053ac4c07aSPatrick McHardy /** 6063ac4c07aSPatrick McHardy * struct nft_set_ext - set extensions 6073ac4c07aSPatrick McHardy * 608cc02e457SPatrick McHardy * @genmask: generation mask 6093ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 6103ac4c07aSPatrick McHardy * @data: beginning of extension data 6113ac4c07aSPatrick McHardy */ 6123ac4c07aSPatrick McHardy struct nft_set_ext { 613cc02e457SPatrick McHardy u8 genmask; 6143ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 6156daf1414SGustavo A. R. Silva char data[]; 6163ac4c07aSPatrick McHardy }; 6173ac4c07aSPatrick McHardy 6183ac4c07aSPatrick McHardy static inline void nft_set_ext_prepare(struct nft_set_ext_tmpl *tmpl) 6193ac4c07aSPatrick McHardy { 6203ac4c07aSPatrick McHardy memset(tmpl, 0, sizeof(*tmpl)); 6213ac4c07aSPatrick McHardy tmpl->len = sizeof(struct nft_set_ext); 6223ac4c07aSPatrick McHardy } 6233ac4c07aSPatrick McHardy 6243ac4c07aSPatrick McHardy static inline void nft_set_ext_add_length(struct nft_set_ext_tmpl *tmpl, u8 id, 6253ac4c07aSPatrick McHardy unsigned int len) 6263ac4c07aSPatrick McHardy { 6273ac4c07aSPatrick McHardy tmpl->len = ALIGN(tmpl->len, nft_set_ext_types[id].align); 6283ac4c07aSPatrick McHardy BUG_ON(tmpl->len > U8_MAX); 6293ac4c07aSPatrick McHardy tmpl->offset[id] = tmpl->len; 6303ac4c07aSPatrick McHardy tmpl->len += nft_set_ext_types[id].len + len; 6313ac4c07aSPatrick McHardy } 6323ac4c07aSPatrick McHardy 6333ac4c07aSPatrick McHardy static inline void nft_set_ext_add(struct nft_set_ext_tmpl *tmpl, u8 id) 6343ac4c07aSPatrick McHardy { 6353ac4c07aSPatrick McHardy nft_set_ext_add_length(tmpl, id, 0); 6363ac4c07aSPatrick McHardy } 6373ac4c07aSPatrick McHardy 6383ac4c07aSPatrick McHardy static inline void nft_set_ext_init(struct nft_set_ext *ext, 6393ac4c07aSPatrick McHardy const struct nft_set_ext_tmpl *tmpl) 6403ac4c07aSPatrick McHardy { 6413ac4c07aSPatrick McHardy memcpy(ext->offset, tmpl->offset, sizeof(ext->offset)); 6423ac4c07aSPatrick McHardy } 6433ac4c07aSPatrick McHardy 6443ac4c07aSPatrick McHardy static inline bool __nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) 6453ac4c07aSPatrick McHardy { 6463ac4c07aSPatrick McHardy return !!ext->offset[id]; 6473ac4c07aSPatrick McHardy } 6483ac4c07aSPatrick McHardy 6493ac4c07aSPatrick McHardy static inline bool nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) 6503ac4c07aSPatrick McHardy { 6513ac4c07aSPatrick McHardy return ext && __nft_set_ext_exists(ext, id); 6523ac4c07aSPatrick McHardy } 6533ac4c07aSPatrick McHardy 6543ac4c07aSPatrick McHardy static inline void *nft_set_ext(const struct nft_set_ext *ext, u8 id) 6553ac4c07aSPatrick McHardy { 6563ac4c07aSPatrick McHardy return (void *)ext + ext->offset[id]; 6573ac4c07aSPatrick McHardy } 6583ac4c07aSPatrick McHardy 6593ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_key(const struct nft_set_ext *ext) 6603ac4c07aSPatrick McHardy { 6613ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_KEY); 6623ac4c07aSPatrick McHardy } 6633ac4c07aSPatrick McHardy 6647b225d0bSPablo Neira Ayuso static inline struct nft_data *nft_set_ext_key_end(const struct nft_set_ext *ext) 6657b225d0bSPablo Neira Ayuso { 6667b225d0bSPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_KEY_END); 6677b225d0bSPablo Neira Ayuso } 6687b225d0bSPablo Neira Ayuso 6693ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_data(const struct nft_set_ext *ext) 6703ac4c07aSPatrick McHardy { 6713ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_DATA); 6723ac4c07aSPatrick McHardy } 6733ac4c07aSPatrick McHardy 6743ac4c07aSPatrick McHardy static inline u8 *nft_set_ext_flags(const struct nft_set_ext *ext) 6753ac4c07aSPatrick McHardy { 6763ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_FLAGS); 6773ac4c07aSPatrick McHardy } 678ef1f7df9SPatrick McHardy 679c3e1b005SPatrick McHardy static inline u64 *nft_set_ext_timeout(const struct nft_set_ext *ext) 680c3e1b005SPatrick McHardy { 681c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_TIMEOUT); 682c3e1b005SPatrick McHardy } 683c3e1b005SPatrick McHardy 6848e1102d5SFlorian Westphal static inline u64 *nft_set_ext_expiration(const struct nft_set_ext *ext) 685c3e1b005SPatrick McHardy { 686c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_EXPIRATION); 687c3e1b005SPatrick McHardy } 688c3e1b005SPatrick McHardy 68968e942e8SPatrick McHardy static inline struct nft_userdata *nft_set_ext_userdata(const struct nft_set_ext *ext) 69068e942e8SPatrick McHardy { 69168e942e8SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_USERDATA); 69268e942e8SPatrick McHardy } 69368e942e8SPatrick McHardy 694563125a7SPablo Neira Ayuso static inline struct nft_set_elem_expr *nft_set_ext_expr(const struct nft_set_ext *ext) 695f25ad2e9SPatrick McHardy { 696563125a7SPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_EXPRESSIONS); 697f25ad2e9SPatrick McHardy } 698f25ad2e9SPatrick McHardy 699c3e1b005SPatrick McHardy static inline bool nft_set_elem_expired(const struct nft_set_ext *ext) 700c3e1b005SPatrick McHardy { 701c3e1b005SPatrick McHardy return nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION) && 7028e1102d5SFlorian Westphal time_is_before_eq_jiffies64(*nft_set_ext_expiration(ext)); 703c3e1b005SPatrick McHardy } 704c3e1b005SPatrick McHardy 705fe2811ebSPatrick McHardy static inline struct nft_set_ext *nft_set_elem_ext(const struct nft_set *set, 706fe2811ebSPatrick McHardy void *elem) 707fe2811ebSPatrick McHardy { 708fe2811ebSPatrick McHardy return elem + set->ops->elemsize; 709fe2811ebSPatrick McHardy } 710fe2811ebSPatrick McHardy 7118aeff920SPablo Neira Ayuso static inline struct nft_object **nft_set_ext_obj(const struct nft_set_ext *ext) 7128aeff920SPablo Neira Ayuso { 7138aeff920SPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_OBJREF); 7148aeff920SPablo Neira Ayuso } 7158aeff920SPablo Neira Ayuso 716a7fc9368SPablo Neira Ayuso struct nft_expr *nft_set_elem_expr_alloc(const struct nft_ctx *ctx, 717a7fc9368SPablo Neira Ayuso const struct nft_set *set, 718a7fc9368SPablo Neira Ayuso const struct nlattr *attr); 719a7fc9368SPablo Neira Ayuso 72022fe54d5SPatrick McHardy void *nft_set_elem_init(const struct nft_set *set, 72122fe54d5SPatrick McHardy const struct nft_set_ext_tmpl *tmpl, 7227b225d0bSPablo Neira Ayuso const u32 *key, const u32 *key_end, const u32 *data, 72379ebb5bbSLaura Garcia Liebana u64 timeout, u64 expiration, gfp_t gfp); 72461f9e292SLiping Zhang void nft_set_elem_destroy(const struct nft_set *set, void *elem, 72561f9e292SLiping Zhang bool destroy_expr); 72661edafbbSPatrick McHardy 72720a69341SPatrick McHardy /** 728cfed7e1bSPatrick McHardy * struct nft_set_gc_batch_head - nf_tables set garbage collection batch 729cfed7e1bSPatrick McHardy * 730cfed7e1bSPatrick McHardy * @rcu: rcu head 731cfed7e1bSPatrick McHardy * @set: set the elements belong to 732cfed7e1bSPatrick McHardy * @cnt: count of elements 733cfed7e1bSPatrick McHardy */ 734cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head { 735cfed7e1bSPatrick McHardy struct rcu_head rcu; 736cfed7e1bSPatrick McHardy const struct nft_set *set; 737cfed7e1bSPatrick McHardy unsigned int cnt; 738cfed7e1bSPatrick McHardy }; 739cfed7e1bSPatrick McHardy 740cfed7e1bSPatrick McHardy #define NFT_SET_GC_BATCH_SIZE ((PAGE_SIZE - \ 741cfed7e1bSPatrick McHardy sizeof(struct nft_set_gc_batch_head)) / \ 742cfed7e1bSPatrick McHardy sizeof(void *)) 743cfed7e1bSPatrick McHardy 744cfed7e1bSPatrick McHardy /** 745cfed7e1bSPatrick McHardy * struct nft_set_gc_batch - nf_tables set garbage collection batch 746cfed7e1bSPatrick McHardy * 747cfed7e1bSPatrick McHardy * @head: GC batch head 748cfed7e1bSPatrick McHardy * @elems: garbage collection elements 749cfed7e1bSPatrick McHardy */ 750cfed7e1bSPatrick McHardy struct nft_set_gc_batch { 751cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head head; 752cfed7e1bSPatrick McHardy void *elems[NFT_SET_GC_BATCH_SIZE]; 753cfed7e1bSPatrick McHardy }; 754cfed7e1bSPatrick McHardy 755cfed7e1bSPatrick McHardy struct nft_set_gc_batch *nft_set_gc_batch_alloc(const struct nft_set *set, 756cfed7e1bSPatrick McHardy gfp_t gfp); 757cfed7e1bSPatrick McHardy void nft_set_gc_batch_release(struct rcu_head *rcu); 758cfed7e1bSPatrick McHardy 759cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_complete(struct nft_set_gc_batch *gcb) 760cfed7e1bSPatrick McHardy { 761cfed7e1bSPatrick McHardy if (gcb != NULL) 762cfed7e1bSPatrick McHardy call_rcu(&gcb->head.rcu, nft_set_gc_batch_release); 763cfed7e1bSPatrick McHardy } 764cfed7e1bSPatrick McHardy 765cfed7e1bSPatrick McHardy static inline struct nft_set_gc_batch * 766cfed7e1bSPatrick McHardy nft_set_gc_batch_check(const struct nft_set *set, struct nft_set_gc_batch *gcb, 767cfed7e1bSPatrick McHardy gfp_t gfp) 768cfed7e1bSPatrick McHardy { 769cfed7e1bSPatrick McHardy if (gcb != NULL) { 770cfed7e1bSPatrick McHardy if (gcb->head.cnt + 1 < ARRAY_SIZE(gcb->elems)) 771cfed7e1bSPatrick McHardy return gcb; 772cfed7e1bSPatrick McHardy nft_set_gc_batch_complete(gcb); 773cfed7e1bSPatrick McHardy } 774cfed7e1bSPatrick McHardy return nft_set_gc_batch_alloc(set, gfp); 775cfed7e1bSPatrick McHardy } 776cfed7e1bSPatrick McHardy 777cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_add(struct nft_set_gc_batch *gcb, 778cfed7e1bSPatrick McHardy void *elem) 779cfed7e1bSPatrick McHardy { 780cfed7e1bSPatrick McHardy gcb->elems[gcb->head.cnt++] = elem; 781cfed7e1bSPatrick McHardy } 782cfed7e1bSPatrick McHardy 783b8e20400SPablo Neira Ayuso struct nft_expr_ops; 784cfed7e1bSPatrick McHardy /** 785ef1f7df9SPatrick McHardy * struct nft_expr_type - nf_tables expression type 78696518518SPatrick McHardy * 787ef1f7df9SPatrick McHardy * @select_ops: function to select nft_expr_ops 788b8e20400SPablo Neira Ayuso * @release_ops: release nft_expr_ops 789ef1f7df9SPatrick McHardy * @ops: default ops, used when no select_ops functions is present 79096518518SPatrick McHardy * @list: used internally 79196518518SPatrick McHardy * @name: Identifier 79296518518SPatrick McHardy * @owner: module reference 79396518518SPatrick McHardy * @policy: netlink attribute policy 79496518518SPatrick McHardy * @maxattr: highest netlink attribute number 79564d46806SPatrick McHardy * @family: address family for AF-specific types 796151d799aSPatrick McHardy * @flags: expression type flags 797ef1f7df9SPatrick McHardy */ 798ef1f7df9SPatrick McHardy struct nft_expr_type { 7990ca743a5SPablo Neira Ayuso const struct nft_expr_ops *(*select_ops)(const struct nft_ctx *, 8000ca743a5SPablo Neira Ayuso const struct nlattr * const tb[]); 801b8e20400SPablo Neira Ayuso void (*release_ops)(const struct nft_expr_ops *ops); 802ef1f7df9SPatrick McHardy const struct nft_expr_ops *ops; 803ef1f7df9SPatrick McHardy struct list_head list; 804ef1f7df9SPatrick McHardy const char *name; 805ef1f7df9SPatrick McHardy struct module *owner; 806ef1f7df9SPatrick McHardy const struct nla_policy *policy; 807ef1f7df9SPatrick McHardy unsigned int maxattr; 80864d46806SPatrick McHardy u8 family; 809151d799aSPatrick McHardy u8 flags; 810ef1f7df9SPatrick McHardy }; 811ef1f7df9SPatrick McHardy 812151d799aSPatrick McHardy #define NFT_EXPR_STATEFUL 0x1 81379b174adSPablo Neira Ayuso #define NFT_EXPR_GC 0x2 814151d799aSPatrick McHardy 815f6ac8585SPablo Neira Ayuso enum nft_trans_phase { 816f6ac8585SPablo Neira Ayuso NFT_TRANS_PREPARE, 817f6ac8585SPablo Neira Ayuso NFT_TRANS_ABORT, 818f6ac8585SPablo Neira Ayuso NFT_TRANS_COMMIT, 819f6ac8585SPablo Neira Ayuso NFT_TRANS_RELEASE 820f6ac8585SPablo Neira Ayuso }; 821f6ac8585SPablo Neira Ayuso 822c9626a2cSPablo Neira Ayuso struct nft_flow_rule; 823c9626a2cSPablo Neira Ayuso struct nft_offload_ctx; 824c9626a2cSPablo Neira Ayuso 825ef1f7df9SPatrick McHardy /** 826ef1f7df9SPatrick McHardy * struct nft_expr_ops - nf_tables expression operations 827ef1f7df9SPatrick McHardy * 828ef1f7df9SPatrick McHardy * @eval: Expression evaluation function 82996518518SPatrick McHardy * @size: full expression size, including private data size 830ef1f7df9SPatrick McHardy * @init: initialization function 831cd5125d8SFlorian Westphal * @activate: activate expression in the next generation 832cd5125d8SFlorian Westphal * @deactivate: deactivate expression in next generation 833cd5125d8SFlorian Westphal * @destroy: destruction function, called after synchronize_rcu 834ef1f7df9SPatrick McHardy * @dump: function to dump parameters 835ef1f7df9SPatrick McHardy * @type: expression type 8360ca743a5SPablo Neira Ayuso * @validate: validate expression, called during loop detection 8370ca743a5SPablo Neira Ayuso * @data: extra data to attach to this expression operation 83896518518SPatrick McHardy */ 83996518518SPatrick McHardy struct nft_expr_ops { 84096518518SPatrick McHardy void (*eval)(const struct nft_expr *expr, 841a55e22e9SPatrick McHardy struct nft_regs *regs, 84296518518SPatrick McHardy const struct nft_pktinfo *pkt); 843086f3321SPablo Neira Ayuso int (*clone)(struct nft_expr *dst, 844086f3321SPablo Neira Ayuso const struct nft_expr *src); 845ef1f7df9SPatrick McHardy unsigned int size; 846ef1f7df9SPatrick McHardy 84796518518SPatrick McHardy int (*init)(const struct nft_ctx *ctx, 84896518518SPatrick McHardy const struct nft_expr *expr, 84996518518SPatrick McHardy const struct nlattr * const tb[]); 850bb7b40aeSPablo Neira Ayuso void (*activate)(const struct nft_ctx *ctx, 851bb7b40aeSPablo Neira Ayuso const struct nft_expr *expr); 852bb7b40aeSPablo Neira Ayuso void (*deactivate)(const struct nft_ctx *ctx, 853f6ac8585SPablo Neira Ayuso const struct nft_expr *expr, 854f6ac8585SPablo Neira Ayuso enum nft_trans_phase phase); 85562472bceSPatrick McHardy void (*destroy)(const struct nft_ctx *ctx, 85662472bceSPatrick McHardy const struct nft_expr *expr); 857371ebcbbSPablo Neira Ayuso void (*destroy_clone)(const struct nft_ctx *ctx, 858371ebcbbSPablo Neira Ayuso const struct nft_expr *expr); 85996518518SPatrick McHardy int (*dump)(struct sk_buff *skb, 86096518518SPatrick McHardy const struct nft_expr *expr); 8610ca743a5SPablo Neira Ayuso int (*validate)(const struct nft_ctx *ctx, 8620ca743a5SPablo Neira Ayuso const struct nft_expr *expr, 8630ca743a5SPablo Neira Ayuso const struct nft_data **data); 86479b174adSPablo Neira Ayuso bool (*gc)(struct net *net, 86579b174adSPablo Neira Ayuso const struct nft_expr *expr); 866c9626a2cSPablo Neira Ayuso int (*offload)(struct nft_offload_ctx *ctx, 867c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow, 868c9626a2cSPablo Neira Ayuso const struct nft_expr *expr); 869c9626a2cSPablo Neira Ayuso u32 offload_flags; 870ef1f7df9SPatrick McHardy const struct nft_expr_type *type; 8710ca743a5SPablo Neira Ayuso void *data; 87296518518SPatrick McHardy }; 87396518518SPatrick McHardy 87496518518SPatrick McHardy /** 87596518518SPatrick McHardy * struct nft_rule - nf_tables rule 87696518518SPatrick McHardy * 87796518518SPatrick McHardy * @list: used internally 87896518518SPatrick McHardy * @handle: rule handle 8790628b123SPablo Neira Ayuso * @genmask: generation mask 88096518518SPatrick McHardy * @dlen: length of expression data 88186f1ec32SPatrick McHardy * @udata: user data is appended to the rule 88296518518SPatrick McHardy * @data: expression data 88396518518SPatrick McHardy */ 88496518518SPatrick McHardy struct nft_rule { 88596518518SPatrick McHardy struct list_head list; 8860768b3b3SPablo Neira Ayuso u64 handle:42, 8870628b123SPablo Neira Ayuso genmask:2, 8880768b3b3SPablo Neira Ayuso dlen:12, 88986f1ec32SPatrick McHardy udata:1; 89096518518SPatrick McHardy unsigned char data[] 89196518518SPatrick McHardy __attribute__((aligned(__alignof__(struct nft_expr)))); 89296518518SPatrick McHardy }; 89396518518SPatrick McHardy 89496518518SPatrick McHardy static inline struct nft_expr *nft_expr_first(const struct nft_rule *rule) 89596518518SPatrick McHardy { 89696518518SPatrick McHardy return (struct nft_expr *)&rule->data[0]; 89796518518SPatrick McHardy } 89896518518SPatrick McHardy 89996518518SPatrick McHardy static inline struct nft_expr *nft_expr_next(const struct nft_expr *expr) 90096518518SPatrick McHardy { 90196518518SPatrick McHardy return ((void *)expr) + expr->ops->size; 90296518518SPatrick McHardy } 90396518518SPatrick McHardy 90496518518SPatrick McHardy static inline struct nft_expr *nft_expr_last(const struct nft_rule *rule) 90596518518SPatrick McHardy { 90696518518SPatrick McHardy return (struct nft_expr *)&rule->data[rule->dlen]; 90796518518SPatrick McHardy } 90896518518SPatrick McHardy 90931cc578aSSaeed Mirzamohammadi static inline bool nft_expr_more(const struct nft_rule *rule, 91031cc578aSSaeed Mirzamohammadi const struct nft_expr *expr) 91131cc578aSSaeed Mirzamohammadi { 91231cc578aSSaeed Mirzamohammadi return expr != nft_expr_last(rule) && expr->ops; 91331cc578aSSaeed Mirzamohammadi } 91431cc578aSSaeed Mirzamohammadi 91586f1ec32SPatrick McHardy static inline struct nft_userdata *nft_userdata(const struct nft_rule *rule) 9160768b3b3SPablo Neira Ayuso { 9170768b3b3SPablo Neira Ayuso return (void *)&rule->data[rule->dlen]; 9180768b3b3SPablo Neira Ayuso } 9190768b3b3SPablo Neira Ayuso 920d0e2c7deSPablo Neira Ayuso void nf_tables_rule_release(const struct nft_ctx *ctx, struct nft_rule *rule); 921d0e2c7deSPablo Neira Ayuso 92276adfafeSPablo Neira Ayuso static inline void nft_set_elem_update_expr(const struct nft_set_ext *ext, 92376adfafeSPablo Neira Ayuso struct nft_regs *regs, 92476adfafeSPablo Neira Ayuso const struct nft_pktinfo *pkt) 92576adfafeSPablo Neira Ayuso { 926563125a7SPablo Neira Ayuso struct nft_set_elem_expr *elem_expr; 92776adfafeSPablo Neira Ayuso struct nft_expr *expr; 928563125a7SPablo Neira Ayuso u32 size; 92976adfafeSPablo Neira Ayuso 930563125a7SPablo Neira Ayuso if (__nft_set_ext_exists(ext, NFT_SET_EXT_EXPRESSIONS)) { 931563125a7SPablo Neira Ayuso elem_expr = nft_set_ext_expr(ext); 932563125a7SPablo Neira Ayuso nft_setelem_expr_foreach(expr, elem_expr, size) { 93376adfafeSPablo Neira Ayuso expr->ops->eval(expr, regs, pkt); 934563125a7SPablo Neira Ayuso if (regs->verdict.code == NFT_BREAK) 935563125a7SPablo Neira Ayuso return; 936563125a7SPablo Neira Ayuso } 93776adfafeSPablo Neira Ayuso } 93876adfafeSPablo Neira Ayuso } 93976adfafeSPablo Neira Ayuso 94096518518SPatrick McHardy /* 94196518518SPatrick McHardy * The last pointer isn't really necessary, but the compiler isn't able to 94296518518SPatrick McHardy * determine that the result of nft_expr_last() is always the same since it 94396518518SPatrick McHardy * can't assume that the dlen value wasn't changed within calls in the loop. 94496518518SPatrick McHardy */ 94596518518SPatrick McHardy #define nft_rule_for_each_expr(expr, last, rule) \ 94696518518SPatrick McHardy for ((expr) = nft_expr_first(rule), (last) = nft_expr_last(rule); \ 94796518518SPatrick McHardy (expr) != (last); \ 94896518518SPatrick McHardy (expr) = nft_expr_next(expr)) 94996518518SPatrick McHardy 950ad652f38SPablo Neira Ayuso #define NFT_CHAIN_POLICY_UNSET U8_MAX 951ad652f38SPablo Neira Ayuso 95296518518SPatrick McHardy /** 95396518518SPatrick McHardy * struct nft_chain - nf_tables chain 95496518518SPatrick McHardy * 95596518518SPatrick McHardy * @rules: list of rules in the chain 95696518518SPatrick McHardy * @list: used internally 9571b2470e5SFlorian Westphal * @rhlhead: used internally 958b5bc89bfSPablo Neira Ayuso * @table: table that this chain belongs to 95996518518SPatrick McHardy * @handle: chain handle 96096518518SPatrick McHardy * @use: number of jump references to this chain 961a0a7379eSPablo Neira Ayuso * @flags: bitmask of enum nft_chain_flags 96296518518SPatrick McHardy * @name: name of the chain 96396518518SPatrick McHardy */ 96496518518SPatrick McHardy struct nft_chain { 9650cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_0; 9660cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_1; 96796518518SPatrick McHardy struct list_head rules; 96896518518SPatrick McHardy struct list_head list; 9691b2470e5SFlorian Westphal struct rhlist_head rhlhead; 970b5bc89bfSPablo Neira Ayuso struct nft_table *table; 97196518518SPatrick McHardy u64 handle; 972a0a7379eSPablo Neira Ayuso u32 use; 973d0e2c7deSPablo Neira Ayuso u8 flags:5, 974d0e2c7deSPablo Neira Ayuso bound:1, 975664b0f8cSPablo Neira Ayuso genmask:2; 976b7263e07SPhil Sutter char *name; 977002f2176SJose M. Guisado Gomez u16 udlen; 978002f2176SJose M. Guisado Gomez u8 *udata; 9790cbc06b3SFlorian Westphal 9800cbc06b3SFlorian Westphal /* Only used during control plane commit phase: */ 9810cbc06b3SFlorian Westphal struct nft_rule **rules_next; 98296518518SPatrick McHardy }; 98396518518SPatrick McHardy 984a654de8fSPablo Neira Ayuso int nft_chain_validate(const struct nft_ctx *ctx, const struct nft_chain *chain); 985a654de8fSPablo Neira Ayuso 98632537e91SPablo Neira Ayuso enum nft_chain_types { 9879370761cSPablo Neira Ayuso NFT_CHAIN_T_DEFAULT = 0, 9889370761cSPablo Neira Ayuso NFT_CHAIN_T_ROUTE, 9899370761cSPablo Neira Ayuso NFT_CHAIN_T_NAT, 9909370761cSPablo Neira Ayuso NFT_CHAIN_T_MAX 9919370761cSPablo Neira Ayuso }; 9929370761cSPablo Neira Ayuso 9931a1e1a12SPatrick McHardy /** 99432537e91SPablo Neira Ayuso * struct nft_chain_type - nf_tables chain type info 9951a1e1a12SPatrick McHardy * 9961a1e1a12SPatrick McHardy * @name: name of the type 9971a1e1a12SPatrick McHardy * @type: numeric identifier 9981a1e1a12SPatrick McHardy * @family: address family 9991a1e1a12SPatrick McHardy * @owner: module owner 10001a1e1a12SPatrick McHardy * @hook_mask: mask of valid hooks 1001c2f9eafeSPablo Neira Ayuso * @hooks: array of hook functions 10024e25ceb8SFlorian Westphal * @ops_register: base chain register function 10034e25ceb8SFlorian Westphal * @ops_unregister: base chain unregister function 10041a1e1a12SPatrick McHardy */ 100532537e91SPablo Neira Ayuso struct nft_chain_type { 10061a1e1a12SPatrick McHardy const char *name; 100732537e91SPablo Neira Ayuso enum nft_chain_types type; 10081a1e1a12SPatrick McHardy int family; 10091a1e1a12SPatrick McHardy struct module *owner; 10101a1e1a12SPatrick McHardy unsigned int hook_mask; 1011d25e2e93SPablo Neira Ayuso nf_hookfn *hooks[NFT_MAX_HOOKS]; 10124e25ceb8SFlorian Westphal int (*ops_register)(struct net *net, const struct nf_hook_ops *ops); 10134e25ceb8SFlorian Westphal void (*ops_unregister)(struct net *net, const struct nf_hook_ops *ops); 10141a1e1a12SPatrick McHardy }; 10151a1e1a12SPatrick McHardy 10167210e4e3SPablo Neira Ayuso int nft_chain_validate_dependency(const struct nft_chain *chain, 101732537e91SPablo Neira Ayuso enum nft_chain_types type); 101875e8d06dSPablo Neira Ayuso int nft_chain_validate_hooks(const struct nft_chain *chain, 101975e8d06dSPablo Neira Ayuso unsigned int hook_flags); 10207210e4e3SPablo Neira Ayuso 1021d0e2c7deSPablo Neira Ayuso static inline bool nft_chain_is_bound(struct nft_chain *chain) 1022d0e2c7deSPablo Neira Ayuso { 1023d0e2c7deSPablo Neira Ayuso return (chain->flags & NFT_CHAIN_BINDING) && chain->bound; 1024d0e2c7deSPablo Neira Ayuso } 1025d0e2c7deSPablo Neira Ayuso 1026d0e2c7deSPablo Neira Ayuso void nft_chain_del(struct nft_chain *chain); 1027d0e2c7deSPablo Neira Ayuso void nf_tables_chain_destroy(struct nft_ctx *ctx); 1028d0e2c7deSPablo Neira Ayuso 10290ca743a5SPablo Neira Ayuso struct nft_stats { 10300ca743a5SPablo Neira Ayuso u64 bytes; 10310ca743a5SPablo Neira Ayuso u64 pkts; 1032ce355e20SEric Dumazet struct u64_stats_sync syncp; 10330ca743a5SPablo Neira Ayuso }; 10340ca743a5SPablo Neira Ayuso 10353f0465a9SPablo Neira Ayuso struct nft_hook { 10363f0465a9SPablo Neira Ayuso struct list_head list; 1037abadb2f8SPablo Neira Ayuso bool inactive; 10383f0465a9SPablo Neira Ayuso struct nf_hook_ops ops; 10393f0465a9SPablo Neira Ayuso struct rcu_head rcu; 10403f0465a9SPablo Neira Ayuso }; 10413f0465a9SPablo Neira Ayuso 104296518518SPatrick McHardy /** 104396518518SPatrick McHardy * struct nft_base_chain - nf_tables base chain 104496518518SPatrick McHardy * 104596518518SPatrick McHardy * @ops: netfilter hook ops 1046d54725cdSPablo Neira Ayuso * @hook_list: list of netfilter hooks (for NFPROTO_NETDEV family) 10479370761cSPablo Neira Ayuso * @type: chain type 10480ca743a5SPablo Neira Ayuso * @policy: default policy 10490ca743a5SPablo Neira Ayuso * @stats: per-cpu chain stats 105096518518SPatrick McHardy * @chain: the chain 105114bfb13fSPablo Neira Ayuso * @flow_block: flow block (for hardware offload) 105296518518SPatrick McHardy */ 105396518518SPatrick McHardy struct nft_base_chain { 1054c974a3a3SPablo Neira Ayuso struct nf_hook_ops ops; 1055d54725cdSPablo Neira Ayuso struct list_head hook_list; 105632537e91SPablo Neira Ayuso const struct nft_chain_type *type; 10570ca743a5SPablo Neira Ayuso u8 policy; 1058835b8033SPablo Neira Ayuso u8 flags; 10590ca743a5SPablo Neira Ayuso struct nft_stats __percpu *stats; 106096518518SPatrick McHardy struct nft_chain chain; 106114bfb13fSPablo Neira Ayuso struct flow_block flow_block; 106296518518SPatrick McHardy }; 106396518518SPatrick McHardy 106496518518SPatrick McHardy static inline struct nft_base_chain *nft_base_chain(const struct nft_chain *chain) 106596518518SPatrick McHardy { 106696518518SPatrick McHardy return container_of(chain, struct nft_base_chain, chain); 106796518518SPatrick McHardy } 106896518518SPatrick McHardy 1069f323d954SPablo Neira Ayuso static inline bool nft_is_base_chain(const struct nft_chain *chain) 1070f323d954SPablo Neira Ayuso { 107167c49de4SPablo Neira Ayuso return chain->flags & NFT_CHAIN_BASE; 1072f323d954SPablo Neira Ayuso } 1073f323d954SPablo Neira Ayuso 10745ebe0b0eSPablo Neira Ayuso int __nft_release_basechain(struct nft_ctx *ctx); 1075835b8033SPablo Neira Ayuso 107606198b34SEric W. Biederman unsigned int nft_do_chain(struct nft_pktinfo *pkt, void *priv); 107796518518SPatrick McHardy 107896518518SPatrick McHardy /** 107996518518SPatrick McHardy * struct nft_table - nf_tables table 108096518518SPatrick McHardy * 108196518518SPatrick McHardy * @list: used internally 10821b2470e5SFlorian Westphal * @chains_ht: chains in the table 10831b2470e5SFlorian Westphal * @chains: same, for stable walks 108496518518SPatrick McHardy * @sets: sets in the table 1085e5009240SPablo Neira Ayuso * @objects: stateful objects in the table 10863b49e2e9SPablo Neira Ayuso * @flowtables: flow tables in the table 108796518518SPatrick McHardy * @hgenerator: handle generator state 10883ecbfd65SHarsha Sharma * @handle: table handle 108996518518SPatrick McHardy * @use: number of chain references to this table 109096518518SPatrick McHardy * @flags: table flag (see enum nft_table_flags) 1091f2a6d766SPablo Neira Ayuso * @genmask: generation mask 109236596dadSPablo Neira Ayuso * @afinfo: address family info 109396518518SPatrick McHardy * @name: name of the table 109496518518SPatrick McHardy */ 109596518518SPatrick McHardy struct nft_table { 109696518518SPatrick McHardy struct list_head list; 10971b2470e5SFlorian Westphal struct rhltable chains_ht; 109896518518SPatrick McHardy struct list_head chains; 109996518518SPatrick McHardy struct list_head sets; 1100e5009240SPablo Neira Ayuso struct list_head objects; 11013b49e2e9SPablo Neira Ayuso struct list_head flowtables; 110296518518SPatrick McHardy u64 hgenerator; 11033ecbfd65SHarsha Sharma u64 handle; 110496518518SPatrick McHardy u32 use; 110598319cb9SPablo Neira Ayuso u16 family:6, 110698319cb9SPablo Neira Ayuso flags:8, 1107f2a6d766SPablo Neira Ayuso genmask:2; 1108e46abbccSPhil Sutter char *name; 11097a81575bSJose M. Guisado Gomez u16 udlen; 11107a81575bSJose M. Guisado Gomez u8 *udata; 1111ebddf1a8SPablo Neira Ayuso }; 1112ebddf1a8SPablo Neira Ayuso 1113d3519cb8SPablo Neira Ayuso static inline bool nft_base_chain_netdev(int family, u32 hooknum) 1114d3519cb8SPablo Neira Ayuso { 1115d3519cb8SPablo Neira Ayuso return family == NFPROTO_NETDEV || 1116d3519cb8SPablo Neira Ayuso (family == NFPROTO_INET && hooknum == NF_INET_INGRESS); 1117d3519cb8SPablo Neira Ayuso } 1118d3519cb8SPablo Neira Ayuso 1119cc07eeb0SPablo Neira Ayuso void nft_register_chain_type(const struct nft_chain_type *); 112032537e91SPablo Neira Ayuso void nft_unregister_chain_type(const struct nft_chain_type *); 112196518518SPatrick McHardy 11225eccdfaaSJoe Perches int nft_register_expr(struct nft_expr_type *); 11235eccdfaaSJoe Perches void nft_unregister_expr(struct nft_expr_type *); 112496518518SPatrick McHardy 112533d5a7b1SFlorian Westphal int nft_verdict_dump(struct sk_buff *skb, int type, 112633d5a7b1SFlorian Westphal const struct nft_verdict *v); 112733d5a7b1SFlorian Westphal 112833d5a7b1SFlorian Westphal /** 1129d152159bSFlorian Westphal * struct nft_object_hash_key - key to lookup nft_object 1130d152159bSFlorian Westphal * 1131d152159bSFlorian Westphal * @name: name of the stateful object to look up 1132d152159bSFlorian Westphal * @table: table the object belongs to 1133d152159bSFlorian Westphal */ 1134d152159bSFlorian Westphal struct nft_object_hash_key { 1135d152159bSFlorian Westphal const char *name; 1136d152159bSFlorian Westphal const struct nft_table *table; 1137d152159bSFlorian Westphal }; 1138d152159bSFlorian Westphal 1139d152159bSFlorian Westphal /** 1140e5009240SPablo Neira Ayuso * struct nft_object - nf_tables stateful object 1141e5009240SPablo Neira Ayuso * 1142e5009240SPablo Neira Ayuso * @list: table stateful object list node 1143d152159bSFlorian Westphal * @key: keys that identify this object 11444d44175aSFlorian Westphal * @rhlhead: nft_objname_ht node 1145e5009240SPablo Neira Ayuso * @genmask: generation mask 1146e5009240SPablo Neira Ayuso * @use: number of references to this stateful object 11473ecbfd65SHarsha Sharma * @handle: unique object handle 1148dfc46034SPablo M. Bermudo Garay * @ops: object operations 11493ecbfd65SHarsha Sharma * @data: object data, layout depends on type 1150e5009240SPablo Neira Ayuso */ 1151e5009240SPablo Neira Ayuso struct nft_object { 1152e5009240SPablo Neira Ayuso struct list_head list; 11534d44175aSFlorian Westphal struct rhlist_head rhlhead; 1154d152159bSFlorian Westphal struct nft_object_hash_key key; 1155e5009240SPablo Neira Ayuso u32 genmask:2, 1156e5009240SPablo Neira Ayuso use:30; 11573ecbfd65SHarsha Sharma u64 handle; 1158b131c964SJose M. Guisado Gomez u16 udlen; 1159b131c964SJose M. Guisado Gomez u8 *udata; 1160e5009240SPablo Neira Ayuso /* runtime data below here */ 1161dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops ____cacheline_aligned; 1162e5009240SPablo Neira Ayuso unsigned char data[] 1163e5009240SPablo Neira Ayuso __attribute__((aligned(__alignof__(u64)))); 1164e5009240SPablo Neira Ayuso }; 1165e5009240SPablo Neira Ayuso 1166e5009240SPablo Neira Ayuso static inline void *nft_obj_data(const struct nft_object *obj) 1167e5009240SPablo Neira Ayuso { 1168e5009240SPablo Neira Ayuso return (void *)obj->data; 1169e5009240SPablo Neira Ayuso } 1170e5009240SPablo Neira Ayuso 1171e5009240SPablo Neira Ayuso #define nft_expr_obj(expr) *((struct nft_object **)nft_expr_priv(expr)) 1172e5009240SPablo Neira Ayuso 11734d44175aSFlorian Westphal struct nft_object *nft_obj_lookup(const struct net *net, 11744d44175aSFlorian Westphal const struct nft_table *table, 1175e5009240SPablo Neira Ayuso const struct nlattr *nla, u32 objtype, 1176e5009240SPablo Neira Ayuso u8 genmask); 1177e5009240SPablo Neira Ayuso 1178d152159bSFlorian Westphal void nft_obj_notify(struct net *net, const struct nft_table *table, 11792599e989SPablo Neira Ayuso struct nft_object *obj, u32 portid, u32 seq, 11802599e989SPablo Neira Ayuso int event, int family, int report, gfp_t gfp); 11812599e989SPablo Neira Ayuso 1182e5009240SPablo Neira Ayuso /** 1183e5009240SPablo Neira Ayuso * struct nft_object_type - stateful object type 1184e5009240SPablo Neira Ayuso * 1185dfc46034SPablo M. Bermudo Garay * @select_ops: function to select nft_object_ops 1186dfc46034SPablo M. Bermudo Garay * @ops: default ops, used when no select_ops functions is present 1187e5009240SPablo Neira Ayuso * @list: list node in list of object types 1188e5009240SPablo Neira Ayuso * @type: stateful object numeric type 1189e5009240SPablo Neira Ayuso * @owner: module owner 1190e5009240SPablo Neira Ayuso * @maxattr: maximum netlink attribute 1191e5009240SPablo Neira Ayuso * @policy: netlink attribute policy 1192dfc46034SPablo M. Bermudo Garay */ 1193dfc46034SPablo M. Bermudo Garay struct nft_object_type { 1194dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *(*select_ops)(const struct nft_ctx *, 1195dfc46034SPablo M. Bermudo Garay const struct nlattr * const tb[]); 1196dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops; 1197dfc46034SPablo M. Bermudo Garay struct list_head list; 1198dfc46034SPablo M. Bermudo Garay u32 type; 1199dfc46034SPablo M. Bermudo Garay unsigned int maxattr; 1200dfc46034SPablo M. Bermudo Garay struct module *owner; 1201dfc46034SPablo M. Bermudo Garay const struct nla_policy *policy; 1202dfc46034SPablo M. Bermudo Garay }; 1203dfc46034SPablo M. Bermudo Garay 1204dfc46034SPablo M. Bermudo Garay /** 1205dfc46034SPablo M. Bermudo Garay * struct nft_object_ops - stateful object operations 1206dfc46034SPablo M. Bermudo Garay * 1207dfc46034SPablo M. Bermudo Garay * @eval: stateful object evaluation function 1208dfc46034SPablo M. Bermudo Garay * @size: stateful object size 1209e5009240SPablo Neira Ayuso * @init: initialize object from netlink attributes 1210e5009240SPablo Neira Ayuso * @destroy: release existing stateful object 1211e5009240SPablo Neira Ayuso * @dump: netlink dump stateful object 1212d62d0ba9SFernando Fernandez Mancera * @update: update stateful object 1213e5009240SPablo Neira Ayuso */ 1214dfc46034SPablo M. Bermudo Garay struct nft_object_ops { 1215e5009240SPablo Neira Ayuso void (*eval)(struct nft_object *obj, 1216e5009240SPablo Neira Ayuso struct nft_regs *regs, 1217e5009240SPablo Neira Ayuso const struct nft_pktinfo *pkt); 1218e5009240SPablo Neira Ayuso unsigned int size; 121984fba055SFlorian Westphal int (*init)(const struct nft_ctx *ctx, 122084fba055SFlorian Westphal const struct nlattr *const tb[], 1221e5009240SPablo Neira Ayuso struct nft_object *obj); 122200bfb320SPablo Neira Ayuso void (*destroy)(const struct nft_ctx *ctx, 122300bfb320SPablo Neira Ayuso struct nft_object *obj); 1224e5009240SPablo Neira Ayuso int (*dump)(struct sk_buff *skb, 122543da04a5SPablo Neira Ayuso struct nft_object *obj, 122643da04a5SPablo Neira Ayuso bool reset); 1227d62d0ba9SFernando Fernandez Mancera void (*update)(struct nft_object *obj, 1228d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj); 1229dfc46034SPablo M. Bermudo Garay const struct nft_object_type *type; 1230e5009240SPablo Neira Ayuso }; 1231e5009240SPablo Neira Ayuso 1232e5009240SPablo Neira Ayuso int nft_register_obj(struct nft_object_type *obj_type); 1233e5009240SPablo Neira Ayuso void nft_unregister_obj(struct nft_object_type *obj_type); 1234e5009240SPablo Neira Ayuso 1235cb662ac6SPablo Neira Ayuso #define NFT_NETDEVICE_MAX 256 1236d92191aaSPablo Neira Ayuso 1237e5009240SPablo Neira Ayuso /** 12383b49e2e9SPablo Neira Ayuso * struct nft_flowtable - nf_tables flow table 12393b49e2e9SPablo Neira Ayuso * 12403b49e2e9SPablo Neira Ayuso * @list: flow table list node in table list 12413b49e2e9SPablo Neira Ayuso * @table: the table the flow table is contained in 12423b49e2e9SPablo Neira Ayuso * @name: name of this flow table 12433b49e2e9SPablo Neira Ayuso * @hooknum: hook number 12443b49e2e9SPablo Neira Ayuso * @ops_len: number of hooks in array 12453b49e2e9SPablo Neira Ayuso * @genmask: generation mask 12463b49e2e9SPablo Neira Ayuso * @use: number of references to this flow table 12473ecbfd65SHarsha Sharma * @handle: unique object handle 1248d92191aaSPablo Neira Ayuso * @dev_name: array of device names 12493b49e2e9SPablo Neira Ayuso * @data: rhashtable and garbage collector 12503b49e2e9SPablo Neira Ayuso * @ops: array of hooks 12513b49e2e9SPablo Neira Ayuso */ 12523b49e2e9SPablo Neira Ayuso struct nft_flowtable { 12533b49e2e9SPablo Neira Ayuso struct list_head list; 12543b49e2e9SPablo Neira Ayuso struct nft_table *table; 12553b49e2e9SPablo Neira Ayuso char *name; 12563b49e2e9SPablo Neira Ayuso int hooknum; 12573b49e2e9SPablo Neira Ayuso int ops_len; 12583b49e2e9SPablo Neira Ayuso u32 genmask:2, 12593b49e2e9SPablo Neira Ayuso use:30; 12603ecbfd65SHarsha Sharma u64 handle; 12613b49e2e9SPablo Neira Ayuso /* runtime data below here */ 12623f0465a9SPablo Neira Ayuso struct list_head hook_list ____cacheline_aligned; 12633b49e2e9SPablo Neira Ayuso struct nf_flowtable data; 12643b49e2e9SPablo Neira Ayuso }; 12653b49e2e9SPablo Neira Ayuso 1266cac20fcdSPablo Neira Ayuso struct nft_flowtable *nft_flowtable_lookup(const struct nft_table *table, 12673b49e2e9SPablo Neira Ayuso const struct nlattr *nla, 12683b49e2e9SPablo Neira Ayuso u8 genmask); 12693b49e2e9SPablo Neira Ayuso 12709b05b6e1SLaura Garcia Liebana void nf_tables_deactivate_flowtable(const struct nft_ctx *ctx, 12719b05b6e1SLaura Garcia Liebana struct nft_flowtable *flowtable, 12729b05b6e1SLaura Garcia Liebana enum nft_trans_phase phase); 12739b05b6e1SLaura Garcia Liebana 12743b49e2e9SPablo Neira Ayuso void nft_register_flowtable_type(struct nf_flowtable_type *type); 12753b49e2e9SPablo Neira Ayuso void nft_unregister_flowtable_type(struct nf_flowtable_type *type); 12763b49e2e9SPablo Neira Ayuso 12773b49e2e9SPablo Neira Ayuso /** 127833d5a7b1SFlorian Westphal * struct nft_traceinfo - nft tracing information and state 127933d5a7b1SFlorian Westphal * 128033d5a7b1SFlorian Westphal * @pkt: pktinfo currently processed 128133d5a7b1SFlorian Westphal * @basechain: base chain currently processed 128233d5a7b1SFlorian Westphal * @chain: chain currently processed 128333d5a7b1SFlorian Westphal * @rule: rule that was evaluated 128433d5a7b1SFlorian Westphal * @verdict: verdict given by rule 128533d5a7b1SFlorian Westphal * @type: event type (enum nft_trace_types) 128633d5a7b1SFlorian Westphal * @packet_dumped: packet headers sent in a previous traceinfo message 128733d5a7b1SFlorian Westphal * @trace: other struct members are initialised 128833d5a7b1SFlorian Westphal */ 128933d5a7b1SFlorian Westphal struct nft_traceinfo { 129033d5a7b1SFlorian Westphal const struct nft_pktinfo *pkt; 129133d5a7b1SFlorian Westphal const struct nft_base_chain *basechain; 129233d5a7b1SFlorian Westphal const struct nft_chain *chain; 129333d5a7b1SFlorian Westphal const struct nft_rule *rule; 129433d5a7b1SFlorian Westphal const struct nft_verdict *verdict; 129533d5a7b1SFlorian Westphal enum nft_trace_types type; 129633d5a7b1SFlorian Westphal bool packet_dumped; 129733d5a7b1SFlorian Westphal bool trace; 129833d5a7b1SFlorian Westphal }; 129933d5a7b1SFlorian Westphal 130033d5a7b1SFlorian Westphal void nft_trace_init(struct nft_traceinfo *info, const struct nft_pktinfo *pkt, 130133d5a7b1SFlorian Westphal const struct nft_verdict *verdict, 130233d5a7b1SFlorian Westphal const struct nft_chain *basechain); 130333d5a7b1SFlorian Westphal 130433d5a7b1SFlorian Westphal void nft_trace_notify(struct nft_traceinfo *info); 130533d5a7b1SFlorian Westphal 13069370761cSPablo Neira Ayuso #define MODULE_ALIAS_NFT_CHAIN(family, name) \ 13079370761cSPablo Neira Ayuso MODULE_ALIAS("nft-chain-" __stringify(family) "-" name) 130896518518SPatrick McHardy 130964d46806SPatrick McHardy #define MODULE_ALIAS_NFT_AF_EXPR(family, name) \ 131064d46806SPatrick McHardy MODULE_ALIAS("nft-expr-" __stringify(family) "-" name) 131164d46806SPatrick McHardy 131296518518SPatrick McHardy #define MODULE_ALIAS_NFT_EXPR(name) \ 131396518518SPatrick McHardy MODULE_ALIAS("nft-expr-" name) 131496518518SPatrick McHardy 1315e5009240SPablo Neira Ayuso #define MODULE_ALIAS_NFT_OBJ(type) \ 1316e5009240SPablo Neira Ayuso MODULE_ALIAS("nft-obj-" __stringify(type)) 1317e5009240SPablo Neira Ayuso 131847e640afSJeremy Sowden #if IS_ENABLED(CONFIG_NF_TABLES) 131947e640afSJeremy Sowden 1320ea4bd995SPatrick McHardy /* 1321ea4bd995SPatrick McHardy * The gencursor defines two generations, the currently active and the 1322ea4bd995SPatrick McHardy * next one. Objects contain a bitmask of 2 bits specifying the generations 1323ea4bd995SPatrick McHardy * they're active in. A set bit means they're inactive in the generation 1324ea4bd995SPatrick McHardy * represented by that bit. 1325ea4bd995SPatrick McHardy * 1326ea4bd995SPatrick McHardy * New objects start out as inactive in the current and active in the 1327ea4bd995SPatrick McHardy * next generation. When committing the ruleset the bitmask is cleared, 1328ea4bd995SPatrick McHardy * meaning they're active in all generations. When removing an object, 1329ea4bd995SPatrick McHardy * it is set inactive in the next generation. After committing the ruleset, 1330ea4bd995SPatrick McHardy * the objects are removed. 1331ea4bd995SPatrick McHardy */ 1332ea4bd995SPatrick McHardy static inline unsigned int nft_gencursor_next(const struct net *net) 1333ea4bd995SPatrick McHardy { 1334ea4bd995SPatrick McHardy return net->nft.gencursor + 1 == 1 ? 1 : 0; 1335ea4bd995SPatrick McHardy } 1336ea4bd995SPatrick McHardy 1337ea4bd995SPatrick McHardy static inline u8 nft_genmask_next(const struct net *net) 1338ea4bd995SPatrick McHardy { 1339ea4bd995SPatrick McHardy return 1 << nft_gencursor_next(net); 1340ea4bd995SPatrick McHardy } 1341ea4bd995SPatrick McHardy 1342ea4bd995SPatrick McHardy static inline u8 nft_genmask_cur(const struct net *net) 1343ea4bd995SPatrick McHardy { 134414cd5d4aSMark Rutland /* Use READ_ONCE() to prevent refetching the value for atomicity */ 134514cd5d4aSMark Rutland return 1 << READ_ONCE(net->nft.gencursor); 1346ea4bd995SPatrick McHardy } 1347ea4bd995SPatrick McHardy 134822fe54d5SPatrick McHardy #define NFT_GENMASK_ANY ((1 << 0) | (1 << 1)) 134922fe54d5SPatrick McHardy 1350cc02e457SPatrick McHardy /* 1351889f7ee7SPablo Neira Ayuso * Generic transaction helpers 1352889f7ee7SPablo Neira Ayuso */ 1353889f7ee7SPablo Neira Ayuso 1354889f7ee7SPablo Neira Ayuso /* Check if this object is currently active. */ 1355889f7ee7SPablo Neira Ayuso #define nft_is_active(__net, __obj) \ 1356889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_cur(__net)) == 0) 1357889f7ee7SPablo Neira Ayuso 1358889f7ee7SPablo Neira Ayuso /* Check if this object is active in the next generation. */ 1359889f7ee7SPablo Neira Ayuso #define nft_is_active_next(__net, __obj) \ 1360889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_next(__net)) == 0) 1361889f7ee7SPablo Neira Ayuso 1362889f7ee7SPablo Neira Ayuso /* This object becomes active in the next generation. */ 1363889f7ee7SPablo Neira Ayuso #define nft_activate_next(__net, __obj) \ 1364889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_cur(__net) 1365889f7ee7SPablo Neira Ayuso 1366889f7ee7SPablo Neira Ayuso /* This object becomes inactive in the next generation. */ 1367889f7ee7SPablo Neira Ayuso #define nft_deactivate_next(__net, __obj) \ 1368889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_next(__net) 1369889f7ee7SPablo Neira Ayuso 1370889f7ee7SPablo Neira Ayuso /* After committing the ruleset, clear the stale generation bit. */ 1371889f7ee7SPablo Neira Ayuso #define nft_clear(__net, __obj) \ 1372889f7ee7SPablo Neira Ayuso (__obj)->genmask &= ~nft_genmask_next(__net) 1373f2a6d766SPablo Neira Ayuso #define nft_active_genmask(__obj, __genmask) \ 1374f2a6d766SPablo Neira Ayuso !((__obj)->genmask & __genmask) 1375889f7ee7SPablo Neira Ayuso 1376889f7ee7SPablo Neira Ayuso /* 1377cc02e457SPatrick McHardy * Set element transaction helpers 1378cc02e457SPatrick McHardy */ 1379cc02e457SPatrick McHardy 1380cc02e457SPatrick McHardy static inline bool nft_set_elem_active(const struct nft_set_ext *ext, 1381cc02e457SPatrick McHardy u8 genmask) 1382cc02e457SPatrick McHardy { 1383cc02e457SPatrick McHardy return !(ext->genmask & genmask); 1384cc02e457SPatrick McHardy } 1385cc02e457SPatrick McHardy 138642a55769SPablo Neira Ayuso static inline void nft_set_elem_change_active(const struct net *net, 138742a55769SPablo Neira Ayuso const struct nft_set *set, 1388cc02e457SPatrick McHardy struct nft_set_ext *ext) 1389cc02e457SPatrick McHardy { 139042a55769SPablo Neira Ayuso ext->genmask ^= nft_genmask_next(net); 1391cc02e457SPatrick McHardy } 1392cc02e457SPatrick McHardy 139347e640afSJeremy Sowden #endif /* IS_ENABLED(CONFIG_NF_TABLES) */ 139447e640afSJeremy Sowden 139569086658SPatrick McHardy /* 139669086658SPatrick McHardy * We use a free bit in the genmask field to indicate the element 139769086658SPatrick McHardy * is busy, meaning it is currently being processed either by 139869086658SPatrick McHardy * the netlink API or GC. 139969086658SPatrick McHardy * 140069086658SPatrick McHardy * Even though the genmask is only a single byte wide, this works 140169086658SPatrick McHardy * because the extension structure if fully constant once initialized, 140269086658SPatrick McHardy * so there are no non-atomic write accesses unless it is already 140369086658SPatrick McHardy * marked busy. 140469086658SPatrick McHardy */ 140569086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_MASK (1 << 2) 140669086658SPatrick McHardy 140769086658SPatrick McHardy #if defined(__LITTLE_ENDIAN_BITFIELD) 140869086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT 2 140969086658SPatrick McHardy #elif defined(__BIG_ENDIAN_BITFIELD) 141069086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT (BITS_PER_LONG - BITS_PER_BYTE + 2) 141169086658SPatrick McHardy #else 141269086658SPatrick McHardy #error 141369086658SPatrick McHardy #endif 141469086658SPatrick McHardy 141569086658SPatrick McHardy static inline int nft_set_elem_mark_busy(struct nft_set_ext *ext) 141669086658SPatrick McHardy { 141769086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 141869086658SPatrick McHardy 141969086658SPatrick McHardy BUILD_BUG_ON(offsetof(struct nft_set_ext, genmask) != 0); 142069086658SPatrick McHardy return test_and_set_bit(NFT_SET_ELEM_BUSY_BIT, word); 142169086658SPatrick McHardy } 142269086658SPatrick McHardy 142369086658SPatrick McHardy static inline void nft_set_elem_clear_busy(struct nft_set_ext *ext) 142469086658SPatrick McHardy { 142569086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 142669086658SPatrick McHardy 142769086658SPatrick McHardy clear_bit(NFT_SET_ELEM_BUSY_BIT, word); 142869086658SPatrick McHardy } 142969086658SPatrick McHardy 14301a1e1a12SPatrick McHardy /** 14311a1e1a12SPatrick McHardy * struct nft_trans - nf_tables object update in transaction 14321a1e1a12SPatrick McHardy * 14331a1e1a12SPatrick McHardy * @list: used internally 14341a1e1a12SPatrick McHardy * @msg_type: message type 14350935d558SFlorian Westphal * @put_net: ctx->net needs to be put 14361a1e1a12SPatrick McHardy * @ctx: transaction context 14371a1e1a12SPatrick McHardy * @data: internal information related to the transaction 14381a1e1a12SPatrick McHardy */ 14391a1e1a12SPatrick McHardy struct nft_trans { 14401a1e1a12SPatrick McHardy struct list_head list; 14411a1e1a12SPatrick McHardy int msg_type; 14420935d558SFlorian Westphal bool put_net; 14431a1e1a12SPatrick McHardy struct nft_ctx ctx; 14446daf1414SGustavo A. R. Silva char data[]; 14451a1e1a12SPatrick McHardy }; 14461a1e1a12SPatrick McHardy 14471a1e1a12SPatrick McHardy struct nft_trans_rule { 14481a1e1a12SPatrick McHardy struct nft_rule *rule; 1449c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow; 14501a94e38dSPablo Neira Ayuso u32 rule_id; 14511a1e1a12SPatrick McHardy }; 14521a1e1a12SPatrick McHardy 14531a1e1a12SPatrick McHardy #define nft_trans_rule(trans) \ 14541a1e1a12SPatrick McHardy (((struct nft_trans_rule *)trans->data)->rule) 1455c9626a2cSPablo Neira Ayuso #define nft_trans_flow_rule(trans) \ 1456c9626a2cSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->flow) 14571a94e38dSPablo Neira Ayuso #define nft_trans_rule_id(trans) \ 14581a94e38dSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->rule_id) 14591a1e1a12SPatrick McHardy 14601a1e1a12SPatrick McHardy struct nft_trans_set { 14611a1e1a12SPatrick McHardy struct nft_set *set; 14621a1e1a12SPatrick McHardy u32 set_id; 14636a0a8d10SPablo Neira Ayuso bool bound; 14641a1e1a12SPatrick McHardy }; 14651a1e1a12SPatrick McHardy 14661a1e1a12SPatrick McHardy #define nft_trans_set(trans) \ 14671a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set) 14681a1e1a12SPatrick McHardy #define nft_trans_set_id(trans) \ 14691a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set_id) 14706a0a8d10SPablo Neira Ayuso #define nft_trans_set_bound(trans) \ 14716a0a8d10SPablo Neira Ayuso (((struct nft_trans_set *)trans->data)->bound) 14721a1e1a12SPatrick McHardy 14731a1e1a12SPatrick McHardy struct nft_trans_chain { 14741a1e1a12SPatrick McHardy bool update; 1475b7263e07SPhil Sutter char *name; 14761a1e1a12SPatrick McHardy struct nft_stats __percpu *stats; 14771a1e1a12SPatrick McHardy u8 policy; 147874cccc3dSPablo Neira Ayuso u32 chain_id; 14791a1e1a12SPatrick McHardy }; 14801a1e1a12SPatrick McHardy 14811a1e1a12SPatrick McHardy #define nft_trans_chain_update(trans) \ 14821a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->update) 14831a1e1a12SPatrick McHardy #define nft_trans_chain_name(trans) \ 14841a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->name) 14851a1e1a12SPatrick McHardy #define nft_trans_chain_stats(trans) \ 14861a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->stats) 14871a1e1a12SPatrick McHardy #define nft_trans_chain_policy(trans) \ 14881a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->policy) 148974cccc3dSPablo Neira Ayuso #define nft_trans_chain_id(trans) \ 149074cccc3dSPablo Neira Ayuso (((struct nft_trans_chain *)trans->data)->chain_id) 14911a1e1a12SPatrick McHardy 14921a1e1a12SPatrick McHardy struct nft_trans_table { 14931a1e1a12SPatrick McHardy bool update; 14941a1e1a12SPatrick McHardy bool enable; 14951a1e1a12SPatrick McHardy }; 14961a1e1a12SPatrick McHardy 14971a1e1a12SPatrick McHardy #define nft_trans_table_update(trans) \ 14981a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->update) 14991a1e1a12SPatrick McHardy #define nft_trans_table_enable(trans) \ 15001a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->enable) 15011a1e1a12SPatrick McHardy 15021a1e1a12SPatrick McHardy struct nft_trans_elem { 15031a1e1a12SPatrick McHardy struct nft_set *set; 15041a1e1a12SPatrick McHardy struct nft_set_elem elem; 15056a0a8d10SPablo Neira Ayuso bool bound; 15061a1e1a12SPatrick McHardy }; 15071a1e1a12SPatrick McHardy 15081a1e1a12SPatrick McHardy #define nft_trans_elem_set(trans) \ 15091a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->set) 15101a1e1a12SPatrick McHardy #define nft_trans_elem(trans) \ 15111a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->elem) 15126a0a8d10SPablo Neira Ayuso #define nft_trans_elem_set_bound(trans) \ 15136a0a8d10SPablo Neira Ayuso (((struct nft_trans_elem *)trans->data)->bound) 15141a1e1a12SPatrick McHardy 1515e5009240SPablo Neira Ayuso struct nft_trans_obj { 1516e5009240SPablo Neira Ayuso struct nft_object *obj; 1517d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj; 1518d62d0ba9SFernando Fernandez Mancera bool update; 1519e5009240SPablo Neira Ayuso }; 1520e5009240SPablo Neira Ayuso 1521e5009240SPablo Neira Ayuso #define nft_trans_obj(trans) \ 1522e5009240SPablo Neira Ayuso (((struct nft_trans_obj *)trans->data)->obj) 1523d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_newobj(trans) \ 1524d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->newobj) 1525d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_update(trans) \ 1526d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->update) 1527e5009240SPablo Neira Ayuso 15283b49e2e9SPablo Neira Ayuso struct nft_trans_flowtable { 15293b49e2e9SPablo Neira Ayuso struct nft_flowtable *flowtable; 153078d9f48fSPablo Neira Ayuso bool update; 153178d9f48fSPablo Neira Ayuso struct list_head hook_list; 15323b49e2e9SPablo Neira Ayuso }; 15333b49e2e9SPablo Neira Ayuso 15343b49e2e9SPablo Neira Ayuso #define nft_trans_flowtable(trans) \ 15353b49e2e9SPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->flowtable) 153678d9f48fSPablo Neira Ayuso #define nft_trans_flowtable_update(trans) \ 153778d9f48fSPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->update) 153878d9f48fSPablo Neira Ayuso #define nft_trans_flowtable_hooks(trans) \ 153978d9f48fSPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->hook_list) 15403b49e2e9SPablo Neira Ayuso 154102c7b25eSPablo Neira Ayuso int __init nft_chain_filter_init(void); 1542d209df3eSFlorian Westphal void nft_chain_filter_fini(void); 154302c7b25eSPablo Neira Ayuso 1544c1deb065SFlorian Westphal void __init nft_chain_route_init(void); 1545c1deb065SFlorian Westphal void nft_chain_route_fini(void); 1546ffe8923fSFlorian Westphal 1547ffe8923fSFlorian Westphal void nf_tables_trans_destroy_flush_work(void); 1548917d80d3SPablo Neira Ayuso 1549917d80d3SPablo Neira Ayuso int nf_msecs_to_jiffies64(const struct nlattr *nla, u64 *result); 1550917d80d3SPablo Neira Ayuso __be64 nf_jiffies64_to_msecs(u64 input); 1551917d80d3SPablo Neira Ayuso 155296518518SPatrick McHardy #endif /* _NET_NF_TABLES_H */ 1553