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 int nft_dump_register(struct sk_buff *skb, unsigned int attr, unsigned int reg); 204b1c96ed3SPatrick McHardy 2054f16d25cSPablo Neira Ayuso int nft_parse_register_load(const struct nlattr *attr, u8 *sreg, u32 len); 206345023b0SPablo Neira Ayuso int nft_parse_register_store(const struct nft_ctx *ctx, 207345023b0SPablo Neira Ayuso const struct nlattr *attr, u8 *dreg, 20896518518SPatrick McHardy const struct nft_data *data, 20945d9bcdaSPatrick McHardy enum nft_data_types type, unsigned int len); 21096518518SPatrick McHardy 21186f1ec32SPatrick McHardy /** 21286f1ec32SPatrick McHardy * struct nft_userdata - user defined data associated with an object 21386f1ec32SPatrick McHardy * 21486f1ec32SPatrick McHardy * @len: length of the data 21586f1ec32SPatrick McHardy * @data: content 21686f1ec32SPatrick McHardy * 21786f1ec32SPatrick McHardy * The presence of user data is indicated in an object specific fashion, 21886f1ec32SPatrick McHardy * so a length of zero can't occur and the value "len" indicates data 21986f1ec32SPatrick McHardy * of length len + 1. 22086f1ec32SPatrick McHardy */ 22186f1ec32SPatrick McHardy struct nft_userdata { 22286f1ec32SPatrick McHardy u8 len; 2236daf1414SGustavo A. R. Silva unsigned char data[]; 22486f1ec32SPatrick McHardy }; 22586f1ec32SPatrick McHardy 22696518518SPatrick McHardy /** 22720a69341SPatrick McHardy * struct nft_set_elem - generic representation of set elements 22820a69341SPatrick McHardy * 22920a69341SPatrick McHardy * @key: element key 2307b225d0bSPablo Neira Ayuso * @key_end: closing element key 231fe2811ebSPatrick McHardy * @priv: element private data and extensions 23220a69341SPatrick McHardy */ 23320a69341SPatrick McHardy struct nft_set_elem { 2347d740264SPatrick McHardy union { 2357d740264SPatrick McHardy u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; 2367d740264SPatrick McHardy struct nft_data val; 2377d740264SPatrick McHardy } key; 2387b225d0bSPablo Neira Ayuso union { 2397b225d0bSPablo Neira Ayuso u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; 2407b225d0bSPablo Neira Ayuso struct nft_data val; 2417b225d0bSPablo Neira Ayuso } key_end; 242fdb9c405SPablo Neira Ayuso union { 243fdb9c405SPablo Neira Ayuso u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; 244fdb9c405SPablo Neira Ayuso struct nft_data val; 245fdb9c405SPablo Neira Ayuso } data; 246fe2811ebSPatrick McHardy void *priv; 24720a69341SPatrick McHardy }; 24820a69341SPatrick McHardy 24920a69341SPatrick McHardy struct nft_set; 25020a69341SPatrick McHardy struct nft_set_iter { 2518588ac09SPablo Neira Ayuso u8 genmask; 25220a69341SPatrick McHardy unsigned int count; 25320a69341SPatrick McHardy unsigned int skip; 25420a69341SPatrick McHardy int err; 25520a69341SPatrick McHardy int (*fn)(const struct nft_ctx *ctx, 256de70185dSPablo Neira Ayuso struct nft_set *set, 25720a69341SPatrick McHardy const struct nft_set_iter *iter, 258de70185dSPablo Neira Ayuso struct nft_set_elem *elem); 25920a69341SPatrick McHardy }; 26020a69341SPatrick McHardy 26120a69341SPatrick McHardy /** 262c50b960cSPatrick McHardy * struct nft_set_desc - description of set elements 263c50b960cSPatrick McHardy * 264c50b960cSPatrick McHardy * @klen: key length 265c50b960cSPatrick McHardy * @dlen: data length 266c50b960cSPatrick McHardy * @size: number of set elements 267f3a2181eSStefano Brivio * @field_len: length of each field in concatenation, bytes 268f3a2181eSStefano Brivio * @field_count: number of concatenated fields in element 269d56aab26SPablo Neira Ayuso * @expr: set must support for expressions 270c50b960cSPatrick McHardy */ 271c50b960cSPatrick McHardy struct nft_set_desc { 272c50b960cSPatrick McHardy unsigned int klen; 273c50b960cSPatrick McHardy unsigned int dlen; 274c50b960cSPatrick McHardy unsigned int size; 275f3a2181eSStefano Brivio u8 field_len[NFT_REG32_COUNT]; 276f3a2181eSStefano Brivio u8 field_count; 277d56aab26SPablo Neira Ayuso bool expr; 278c50b960cSPatrick McHardy }; 279c50b960cSPatrick McHardy 280c50b960cSPatrick McHardy /** 281c50b960cSPatrick McHardy * enum nft_set_class - performance class 282c50b960cSPatrick McHardy * 283c50b960cSPatrick McHardy * @NFT_LOOKUP_O_1: constant, O(1) 284c50b960cSPatrick McHardy * @NFT_LOOKUP_O_LOG_N: logarithmic, O(log N) 285c50b960cSPatrick McHardy * @NFT_LOOKUP_O_N: linear, O(N) 286c50b960cSPatrick McHardy */ 287c50b960cSPatrick McHardy enum nft_set_class { 288c50b960cSPatrick McHardy NFT_SET_CLASS_O_1, 289c50b960cSPatrick McHardy NFT_SET_CLASS_O_LOG_N, 290c50b960cSPatrick McHardy NFT_SET_CLASS_O_N, 291c50b960cSPatrick McHardy }; 292c50b960cSPatrick McHardy 293c50b960cSPatrick McHardy /** 294c50b960cSPatrick McHardy * struct nft_set_estimate - estimation of memory and performance 295c50b960cSPatrick McHardy * characteristics 296c50b960cSPatrick McHardy * 297c50b960cSPatrick McHardy * @size: required memory 29855af753cSPablo Neira Ayuso * @lookup: lookup performance class 2990b5a7874SPablo Neira Ayuso * @space: memory class 300c50b960cSPatrick McHardy */ 301c50b960cSPatrick McHardy struct nft_set_estimate { 3024ef360ddSTaehee Yoo u64 size; 30355af753cSPablo Neira Ayuso enum nft_set_class lookup; 3040b5a7874SPablo Neira Ayuso enum nft_set_class space; 305c50b960cSPatrick McHardy }; 306c50b960cSPatrick McHardy 30792b211a2SPablo Neira Ayuso #define NFT_EXPR_MAXATTR 16 30892b211a2SPablo Neira Ayuso #define NFT_EXPR_SIZE(size) (sizeof(struct nft_expr) + \ 30992b211a2SPablo Neira Ayuso ALIGN(size, __alignof__(struct nft_expr))) 31092b211a2SPablo Neira Ayuso 31192b211a2SPablo Neira Ayuso /** 31292b211a2SPablo Neira Ayuso * struct nft_expr - nf_tables expression 31392b211a2SPablo Neira Ayuso * 31492b211a2SPablo Neira Ayuso * @ops: expression ops 31592b211a2SPablo Neira Ayuso * @data: expression private data 31692b211a2SPablo Neira Ayuso */ 31792b211a2SPablo Neira Ayuso struct nft_expr { 31892b211a2SPablo Neira Ayuso const struct nft_expr_ops *ops; 31992b211a2SPablo Neira Ayuso unsigned char data[] 32092b211a2SPablo Neira Ayuso __attribute__((aligned(__alignof__(u64)))); 32192b211a2SPablo Neira Ayuso }; 32292b211a2SPablo Neira Ayuso 32392b211a2SPablo Neira Ayuso static inline void *nft_expr_priv(const struct nft_expr *expr) 32492b211a2SPablo Neira Ayuso { 32592b211a2SPablo Neira Ayuso return (void *)expr->data; 32692b211a2SPablo Neira Ayuso } 32792b211a2SPablo Neira Ayuso 32892b211a2SPablo Neira Ayuso int nft_expr_clone(struct nft_expr *dst, struct nft_expr *src); 32992b211a2SPablo Neira Ayuso void nft_expr_destroy(const struct nft_ctx *ctx, struct nft_expr *expr); 33092b211a2SPablo Neira Ayuso int nft_expr_dump(struct sk_buff *skb, unsigned int attr, 33192b211a2SPablo Neira Ayuso const struct nft_expr *expr); 33292b211a2SPablo Neira Ayuso 333b2832dd6SPatrick McHardy struct nft_set_ext; 334b2832dd6SPatrick McHardy 335c50b960cSPatrick McHardy /** 33620a69341SPatrick McHardy * struct nft_set_ops - nf_tables set operations 33720a69341SPatrick McHardy * 33820a69341SPatrick McHardy * @lookup: look up an element within the set 339d0a8d877SAnder Juaristi * @update: update an element if exists, add it if doesn't exist 340d0a8d877SAnder Juaristi * @delete: delete an element 34120a69341SPatrick McHardy * @insert: insert new element into set 342cc02e457SPatrick McHardy * @activate: activate new element in the next generation 3438411b644SPablo Neira Ayuso * @deactivate: lookup for element and deactivate it in the next generation 3441ba1c414SPablo Neira Ayuso * @flush: deactivate element in the next generation 34520a69341SPatrick McHardy * @remove: remove element from set 346d0a8d877SAnder Juaristi * @walk: iterate over all set elements 347ba0e4d99SPablo Neira Ayuso * @get: get set elements 34820a69341SPatrick McHardy * @privsize: function to return size of set private data 34920a69341SPatrick McHardy * @init: initialize private data of new set instance 35020a69341SPatrick McHardy * @destroy: destroy private data of set instance 351fe2811ebSPatrick McHardy * @elemsize: element private size 352d0a8d877SAnder Juaristi * 353d0a8d877SAnder Juaristi * Operations lookup, update and delete have simpler interfaces, are faster 354d0a8d877SAnder Juaristi * and currently only used in the packet path. All the rest are slower, 355d0a8d877SAnder Juaristi * control plane functions. 35620a69341SPatrick McHardy */ 35720a69341SPatrick McHardy struct nft_set_ops { 35842a55769SPablo Neira Ayuso bool (*lookup)(const struct net *net, 35942a55769SPablo Neira Ayuso const struct nft_set *set, 3608cd8937aSPatrick McHardy const u32 *key, 361b2832dd6SPatrick McHardy const struct nft_set_ext **ext); 36222fe54d5SPatrick McHardy bool (*update)(struct nft_set *set, 3638cd8937aSPatrick McHardy const u32 *key, 36422fe54d5SPatrick McHardy void *(*new)(struct nft_set *, 36522fe54d5SPatrick McHardy const struct nft_expr *, 366a55e22e9SPatrick McHardy struct nft_regs *), 36722fe54d5SPatrick McHardy const struct nft_expr *expr, 368a55e22e9SPatrick McHardy struct nft_regs *regs, 36922fe54d5SPatrick McHardy const struct nft_set_ext **ext); 370d0a8d877SAnder Juaristi bool (*delete)(const struct nft_set *set, 371d0a8d877SAnder Juaristi const u32 *key); 37222fe54d5SPatrick McHardy 37342a55769SPablo Neira Ayuso int (*insert)(const struct net *net, 37442a55769SPablo Neira Ayuso const struct nft_set *set, 375c016c7e4SPablo Neira Ayuso const struct nft_set_elem *elem, 376c016c7e4SPablo Neira Ayuso struct nft_set_ext **ext); 37742a55769SPablo Neira Ayuso void (*activate)(const struct net *net, 37842a55769SPablo Neira Ayuso const struct nft_set *set, 379cc02e457SPatrick McHardy const struct nft_set_elem *elem); 38042a55769SPablo Neira Ayuso void * (*deactivate)(const struct net *net, 38142a55769SPablo Neira Ayuso const struct nft_set *set, 382cc02e457SPatrick McHardy const struct nft_set_elem *elem); 3831ba1c414SPablo Neira Ayuso bool (*flush)(const struct net *net, 3848411b644SPablo Neira Ayuso const struct nft_set *set, 3858411b644SPablo Neira Ayuso void *priv); 3865cb82a38SPablo Neira Ayuso void (*remove)(const struct net *net, 3875cb82a38SPablo Neira Ayuso const struct nft_set *set, 38820a69341SPatrick McHardy const struct nft_set_elem *elem); 38920a69341SPatrick McHardy void (*walk)(const struct nft_ctx *ctx, 390de70185dSPablo Neira Ayuso struct nft_set *set, 39120a69341SPatrick McHardy struct nft_set_iter *iter); 392ba0e4d99SPablo Neira Ayuso void * (*get)(const struct net *net, 393ba0e4d99SPablo Neira Ayuso const struct nft_set *set, 394ba0e4d99SPablo Neira Ayuso const struct nft_set_elem *elem, 395ba0e4d99SPablo Neira Ayuso unsigned int flags); 39620a69341SPatrick McHardy 3974ef360ddSTaehee Yoo u64 (*privsize)(const struct nlattr * const nla[], 398347b408dSPablo Neira Ayuso const struct nft_set_desc *desc); 399c50b960cSPatrick McHardy bool (*estimate)(const struct nft_set_desc *desc, 400c50b960cSPatrick McHardy u32 features, 401c50b960cSPatrick McHardy struct nft_set_estimate *est); 40220a69341SPatrick McHardy int (*init)(const struct nft_set *set, 403c50b960cSPatrick McHardy const struct nft_set_desc *desc, 40420a69341SPatrick McHardy const struct nlattr * const nla[]); 40520a69341SPatrick McHardy void (*destroy)(const struct nft_set *set); 40679b174adSPablo Neira Ayuso void (*gc_init)(const struct nft_set *set); 40720a69341SPatrick McHardy 408fe2811ebSPatrick McHardy unsigned int elemsize; 40920a69341SPatrick McHardy }; 41020a69341SPatrick McHardy 41171cc0873SPhil Sutter /** 41271cc0873SPhil Sutter * struct nft_set_type - nf_tables set type 41371cc0873SPhil Sutter * 41471cc0873SPhil Sutter * @ops: set ops for this type 41571cc0873SPhil Sutter * @features: features supported by the implementation 41671cc0873SPhil Sutter */ 41771cc0873SPhil Sutter struct nft_set_type { 41871cc0873SPhil Sutter const struct nft_set_ops ops; 41971cc0873SPhil Sutter u32 features; 42071cc0873SPhil Sutter }; 42171cc0873SPhil Sutter #define to_set_type(o) container_of(o, struct nft_set_type, ops) 42271cc0873SPhil Sutter 423563125a7SPablo Neira Ayuso struct nft_set_elem_expr { 424563125a7SPablo Neira Ayuso u8 size; 425563125a7SPablo Neira Ayuso unsigned char data[] 426563125a7SPablo Neira Ayuso __attribute__((aligned(__alignof__(struct nft_expr)))); 427563125a7SPablo Neira Ayuso }; 428563125a7SPablo Neira Ayuso 429563125a7SPablo Neira Ayuso #define nft_setelem_expr_at(__elem_expr, __offset) \ 430563125a7SPablo Neira Ayuso ((struct nft_expr *)&__elem_expr->data[__offset]) 431563125a7SPablo Neira Ayuso 432563125a7SPablo Neira Ayuso #define nft_setelem_expr_foreach(__expr, __elem_expr, __size) \ 433563125a7SPablo Neira Ayuso for (__expr = nft_setelem_expr_at(__elem_expr, 0), __size = 0; \ 434563125a7SPablo Neira Ayuso __size < (__elem_expr)->size; \ 435563125a7SPablo Neira Ayuso __size += (__expr)->ops->size, __expr = ((void *)(__expr)) + (__expr)->ops->size) 436563125a7SPablo Neira Ayuso 4378cfd9b0fSPablo Neira Ayuso #define NFT_SET_EXPR_MAX 2 4388cfd9b0fSPablo Neira Ayuso 43920a69341SPatrick McHardy /** 44020a69341SPatrick McHardy * struct nft_set - nf_tables set instance 44120a69341SPatrick McHardy * 44220a69341SPatrick McHardy * @list: table set list node 44320a69341SPatrick McHardy * @bindings: list of set bindings 4443453c927SPablo Neira Ayuso * @table: table this set belongs to 4453453c927SPablo Neira Ayuso * @net: netnamespace this set belongs to 44620a69341SPatrick McHardy * @name: name of the set 4473ecbfd65SHarsha Sharma * @handle: unique handle of the set 44820a69341SPatrick McHardy * @ktype: key type (numeric type defined by userspace, not used in the kernel) 44920a69341SPatrick McHardy * @dtype: data type (verdict or numeric type defined by userspace) 4508aeff920SPablo Neira Ayuso * @objtype: object type (see NFT_OBJECT_* definitions) 451c50b960cSPatrick McHardy * @size: maximum set size 452f3a2181eSStefano Brivio * @field_len: length of each field in concatenation, bytes 453f3a2181eSStefano Brivio * @field_count: number of concatenated fields in element 454273fe3f1SPablo Neira Ayuso * @use: number of rules references to this set 455c50b960cSPatrick McHardy * @nelems: number of elements 4563dd0673aSPatrick McHardy * @ndeact: number of deactivated elements queued for removal 457d3e2a111SAnders K. Pedersen * @timeout: default timeout value in jiffies 458761da293SPatrick McHardy * @gc_int: garbage collection interval in msecs 4599363dc4bSArturo Borrero * @policy: set parameterization (see enum nft_set_policies) 460e6d8ecacSCarlos Falgueras García * @udlen: user data length 461e6d8ecacSCarlos Falgueras García * @udata: user data 46265038428SPablo Neira Ayuso * @expr: stateful expression 46320a69341SPatrick McHardy * @ops: set ops 46420a69341SPatrick McHardy * @flags: set flags 46537a9cc52SPablo Neira Ayuso * @genmask: generation mask 46620a69341SPatrick McHardy * @klen: key length 46720a69341SPatrick McHardy * @dlen: data length 46820a69341SPatrick McHardy * @data: private set data 46920a69341SPatrick McHardy */ 47020a69341SPatrick McHardy struct nft_set { 47120a69341SPatrick McHardy struct list_head list; 47220a69341SPatrick McHardy struct list_head bindings; 4733453c927SPablo Neira Ayuso struct nft_table *table; 4743453c927SPablo Neira Ayuso possible_net_t net; 47538745490SPhil Sutter char *name; 4763ecbfd65SHarsha Sharma u64 handle; 47720a69341SPatrick McHardy u32 ktype; 47820a69341SPatrick McHardy u32 dtype; 4798aeff920SPablo Neira Ayuso u32 objtype; 480c50b960cSPatrick McHardy u32 size; 481f3a2181eSStefano Brivio u8 field_len[NFT_REG32_COUNT]; 482f3a2181eSStefano Brivio u8 field_count; 483273fe3f1SPablo Neira Ayuso u32 use; 4843dd0673aSPatrick McHardy atomic_t nelems; 4853dd0673aSPatrick McHardy u32 ndeact; 486761da293SPatrick McHardy u64 timeout; 487761da293SPatrick McHardy u32 gc_int; 4889363dc4bSArturo Borrero u16 policy; 489e6d8ecacSCarlos Falgueras García u16 udlen; 490e6d8ecacSCarlos Falgueras García unsigned char *udata; 49120a69341SPatrick McHardy /* runtime data below here */ 49220a69341SPatrick McHardy const struct nft_set_ops *ops ____cacheline_aligned; 4936a0a8d10SPablo Neira Ayuso u16 flags:14, 49437a9cc52SPablo Neira Ayuso genmask:2; 49520a69341SPatrick McHardy u8 klen; 49620a69341SPatrick McHardy u8 dlen; 4978cfd9b0fSPablo Neira Ayuso u8 num_exprs; 4988cfd9b0fSPablo Neira Ayuso struct nft_expr *exprs[NFT_SET_EXPR_MAX]; 49920a69341SPatrick McHardy unsigned char data[] 50020a69341SPatrick McHardy __attribute__((aligned(__alignof__(u64)))); 50120a69341SPatrick McHardy }; 50220a69341SPatrick McHardy 503408070d6SPablo Neira Ayuso static inline bool nft_set_is_anonymous(const struct nft_set *set) 504408070d6SPablo Neira Ayuso { 505408070d6SPablo Neira Ayuso return set->flags & NFT_SET_ANONYMOUS; 506408070d6SPablo Neira Ayuso } 507408070d6SPablo Neira Ayuso 50820a69341SPatrick McHardy static inline void *nft_set_priv(const struct nft_set *set) 50920a69341SPatrick McHardy { 51020a69341SPatrick McHardy return (void *)set->data; 51120a69341SPatrick McHardy } 51220a69341SPatrick McHardy 5139d098292SPatrick McHardy static inline struct nft_set *nft_set_container_of(const void *priv) 5149d098292SPatrick McHardy { 5159d098292SPatrick McHardy return (void *)priv - offsetof(struct nft_set, data); 5169d098292SPatrick McHardy } 5179d098292SPatrick McHardy 51810659cbaSPablo Neira Ayuso struct nft_set *nft_set_lookup_global(const struct net *net, 519c7a72e3fSPablo Neira Ayuso const struct nft_table *table, 520c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_name, 521c7a72e3fSPablo Neira Ayuso const struct nlattr *nla_set_id, 522c7a72e3fSPablo Neira Ayuso u8 genmask); 52320a69341SPatrick McHardy 524761da293SPatrick McHardy static inline unsigned long nft_set_gc_interval(const struct nft_set *set) 525761da293SPatrick McHardy { 526761da293SPatrick McHardy return set->gc_int ? msecs_to_jiffies(set->gc_int) : HZ; 527761da293SPatrick McHardy } 528761da293SPatrick McHardy 52920a69341SPatrick McHardy /** 53020a69341SPatrick McHardy * struct nft_set_binding - nf_tables set binding 53120a69341SPatrick McHardy * 53220a69341SPatrick McHardy * @list: set bindings list node 53320a69341SPatrick McHardy * @chain: chain containing the rule bound to the set 53411113e19SPatrick McHardy * @flags: set action flags 53520a69341SPatrick McHardy * 53620a69341SPatrick McHardy * A set binding contains all information necessary for validation 53720a69341SPatrick McHardy * of new elements added to a bound set. 53820a69341SPatrick McHardy */ 53920a69341SPatrick McHardy struct nft_set_binding { 54020a69341SPatrick McHardy struct list_head list; 54120a69341SPatrick McHardy const struct nft_chain *chain; 54211113e19SPatrick McHardy u32 flags; 54320a69341SPatrick McHardy }; 54420a69341SPatrick McHardy 545273fe3f1SPablo Neira Ayuso enum nft_trans_phase; 546273fe3f1SPablo Neira Ayuso void nf_tables_deactivate_set(const struct nft_ctx *ctx, struct nft_set *set, 547273fe3f1SPablo Neira Ayuso struct nft_set_binding *binding, 548273fe3f1SPablo Neira Ayuso enum nft_trans_phase phase); 5495eccdfaaSJoe Perches int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, 55020a69341SPatrick McHardy struct nft_set_binding *binding); 551cd5125d8SFlorian Westphal void nf_tables_destroy_set(const struct nft_ctx *ctx, struct nft_set *set); 55220a69341SPatrick McHardy 5533ac4c07aSPatrick McHardy /** 5543ac4c07aSPatrick McHardy * enum nft_set_extensions - set extension type IDs 5553ac4c07aSPatrick McHardy * 5563ac4c07aSPatrick McHardy * @NFT_SET_EXT_KEY: element key 5577b225d0bSPablo Neira Ayuso * @NFT_SET_EXT_KEY_END: upper bound element key, for ranges 5583ac4c07aSPatrick McHardy * @NFT_SET_EXT_DATA: mapping data 5593ac4c07aSPatrick McHardy * @NFT_SET_EXT_FLAGS: element flags 560c3e1b005SPatrick McHardy * @NFT_SET_EXT_TIMEOUT: element timeout 561c3e1b005SPatrick McHardy * @NFT_SET_EXT_EXPIRATION: element expiration time 56268e942e8SPatrick McHardy * @NFT_SET_EXT_USERDATA: user data associated with the element 563563125a7SPablo Neira Ayuso * @NFT_SET_EXT_EXPRESSIONS: expressions assiciated with the element 5648aeff920SPablo Neira Ayuso * @NFT_SET_EXT_OBJREF: stateful object reference associated with element 5653ac4c07aSPatrick McHardy * @NFT_SET_EXT_NUM: number of extension types 5663ac4c07aSPatrick McHardy */ 5673ac4c07aSPatrick McHardy enum nft_set_extensions { 5683ac4c07aSPatrick McHardy NFT_SET_EXT_KEY, 5697b225d0bSPablo Neira Ayuso NFT_SET_EXT_KEY_END, 5703ac4c07aSPatrick McHardy NFT_SET_EXT_DATA, 5713ac4c07aSPatrick McHardy NFT_SET_EXT_FLAGS, 572c3e1b005SPatrick McHardy NFT_SET_EXT_TIMEOUT, 573c3e1b005SPatrick McHardy NFT_SET_EXT_EXPIRATION, 57468e942e8SPatrick McHardy NFT_SET_EXT_USERDATA, 575563125a7SPablo Neira Ayuso NFT_SET_EXT_EXPRESSIONS, 5768aeff920SPablo Neira Ayuso NFT_SET_EXT_OBJREF, 5773ac4c07aSPatrick McHardy NFT_SET_EXT_NUM 5783ac4c07aSPatrick McHardy }; 5793ac4c07aSPatrick McHardy 5803ac4c07aSPatrick McHardy /** 5813ac4c07aSPatrick McHardy * struct nft_set_ext_type - set extension type 5823ac4c07aSPatrick McHardy * 5833ac4c07aSPatrick McHardy * @len: fixed part length of the extension 5843ac4c07aSPatrick McHardy * @align: alignment requirements of the extension 5853ac4c07aSPatrick McHardy */ 5863ac4c07aSPatrick McHardy struct nft_set_ext_type { 5873ac4c07aSPatrick McHardy u8 len; 5883ac4c07aSPatrick McHardy u8 align; 5893ac4c07aSPatrick McHardy }; 5903ac4c07aSPatrick McHardy 5913ac4c07aSPatrick McHardy extern const struct nft_set_ext_type nft_set_ext_types[]; 5923ac4c07aSPatrick McHardy 5933ac4c07aSPatrick McHardy /** 5943ac4c07aSPatrick McHardy * struct nft_set_ext_tmpl - set extension template 5953ac4c07aSPatrick McHardy * 5963ac4c07aSPatrick McHardy * @len: length of extension area 5973ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 5983ac4c07aSPatrick McHardy */ 5993ac4c07aSPatrick McHardy struct nft_set_ext_tmpl { 6003ac4c07aSPatrick McHardy u16 len; 6013ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 6023ac4c07aSPatrick McHardy }; 6033ac4c07aSPatrick McHardy 6043ac4c07aSPatrick McHardy /** 6053ac4c07aSPatrick McHardy * struct nft_set_ext - set extensions 6063ac4c07aSPatrick McHardy * 607cc02e457SPatrick McHardy * @genmask: generation mask 6083ac4c07aSPatrick McHardy * @offset: offsets of individual extension types 6093ac4c07aSPatrick McHardy * @data: beginning of extension data 6103ac4c07aSPatrick McHardy */ 6113ac4c07aSPatrick McHardy struct nft_set_ext { 612cc02e457SPatrick McHardy u8 genmask; 6133ac4c07aSPatrick McHardy u8 offset[NFT_SET_EXT_NUM]; 6146daf1414SGustavo A. R. Silva char data[]; 6153ac4c07aSPatrick McHardy }; 6163ac4c07aSPatrick McHardy 6173ac4c07aSPatrick McHardy static inline void nft_set_ext_prepare(struct nft_set_ext_tmpl *tmpl) 6183ac4c07aSPatrick McHardy { 6193ac4c07aSPatrick McHardy memset(tmpl, 0, sizeof(*tmpl)); 6203ac4c07aSPatrick McHardy tmpl->len = sizeof(struct nft_set_ext); 6213ac4c07aSPatrick McHardy } 6223ac4c07aSPatrick McHardy 6233ac4c07aSPatrick McHardy static inline void nft_set_ext_add_length(struct nft_set_ext_tmpl *tmpl, u8 id, 6243ac4c07aSPatrick McHardy unsigned int len) 6253ac4c07aSPatrick McHardy { 6263ac4c07aSPatrick McHardy tmpl->len = ALIGN(tmpl->len, nft_set_ext_types[id].align); 6273ac4c07aSPatrick McHardy BUG_ON(tmpl->len > U8_MAX); 6283ac4c07aSPatrick McHardy tmpl->offset[id] = tmpl->len; 6293ac4c07aSPatrick McHardy tmpl->len += nft_set_ext_types[id].len + len; 6303ac4c07aSPatrick McHardy } 6313ac4c07aSPatrick McHardy 6323ac4c07aSPatrick McHardy static inline void nft_set_ext_add(struct nft_set_ext_tmpl *tmpl, u8 id) 6333ac4c07aSPatrick McHardy { 6343ac4c07aSPatrick McHardy nft_set_ext_add_length(tmpl, id, 0); 6353ac4c07aSPatrick McHardy } 6363ac4c07aSPatrick McHardy 6373ac4c07aSPatrick McHardy static inline void nft_set_ext_init(struct nft_set_ext *ext, 6383ac4c07aSPatrick McHardy const struct nft_set_ext_tmpl *tmpl) 6393ac4c07aSPatrick McHardy { 6403ac4c07aSPatrick McHardy memcpy(ext->offset, tmpl->offset, sizeof(ext->offset)); 6413ac4c07aSPatrick McHardy } 6423ac4c07aSPatrick McHardy 6433ac4c07aSPatrick McHardy static inline bool __nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) 6443ac4c07aSPatrick McHardy { 6453ac4c07aSPatrick McHardy return !!ext->offset[id]; 6463ac4c07aSPatrick McHardy } 6473ac4c07aSPatrick McHardy 6483ac4c07aSPatrick McHardy static inline bool nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) 6493ac4c07aSPatrick McHardy { 6503ac4c07aSPatrick McHardy return ext && __nft_set_ext_exists(ext, id); 6513ac4c07aSPatrick McHardy } 6523ac4c07aSPatrick McHardy 6533ac4c07aSPatrick McHardy static inline void *nft_set_ext(const struct nft_set_ext *ext, u8 id) 6543ac4c07aSPatrick McHardy { 6553ac4c07aSPatrick McHardy return (void *)ext + ext->offset[id]; 6563ac4c07aSPatrick McHardy } 6573ac4c07aSPatrick McHardy 6583ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_key(const struct nft_set_ext *ext) 6593ac4c07aSPatrick McHardy { 6603ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_KEY); 6613ac4c07aSPatrick McHardy } 6623ac4c07aSPatrick McHardy 6637b225d0bSPablo Neira Ayuso static inline struct nft_data *nft_set_ext_key_end(const struct nft_set_ext *ext) 6647b225d0bSPablo Neira Ayuso { 6657b225d0bSPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_KEY_END); 6667b225d0bSPablo Neira Ayuso } 6677b225d0bSPablo Neira Ayuso 6683ac4c07aSPatrick McHardy static inline struct nft_data *nft_set_ext_data(const struct nft_set_ext *ext) 6693ac4c07aSPatrick McHardy { 6703ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_DATA); 6713ac4c07aSPatrick McHardy } 6723ac4c07aSPatrick McHardy 6733ac4c07aSPatrick McHardy static inline u8 *nft_set_ext_flags(const struct nft_set_ext *ext) 6743ac4c07aSPatrick McHardy { 6753ac4c07aSPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_FLAGS); 6763ac4c07aSPatrick McHardy } 677ef1f7df9SPatrick McHardy 678c3e1b005SPatrick McHardy static inline u64 *nft_set_ext_timeout(const struct nft_set_ext *ext) 679c3e1b005SPatrick McHardy { 680c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_TIMEOUT); 681c3e1b005SPatrick McHardy } 682c3e1b005SPatrick McHardy 6838e1102d5SFlorian Westphal static inline u64 *nft_set_ext_expiration(const struct nft_set_ext *ext) 684c3e1b005SPatrick McHardy { 685c3e1b005SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_EXPIRATION); 686c3e1b005SPatrick McHardy } 687c3e1b005SPatrick McHardy 68868e942e8SPatrick McHardy static inline struct nft_userdata *nft_set_ext_userdata(const struct nft_set_ext *ext) 68968e942e8SPatrick McHardy { 69068e942e8SPatrick McHardy return nft_set_ext(ext, NFT_SET_EXT_USERDATA); 69168e942e8SPatrick McHardy } 69268e942e8SPatrick McHardy 693563125a7SPablo Neira Ayuso static inline struct nft_set_elem_expr *nft_set_ext_expr(const struct nft_set_ext *ext) 694f25ad2e9SPatrick McHardy { 695563125a7SPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_EXPRESSIONS); 696f25ad2e9SPatrick McHardy } 697f25ad2e9SPatrick McHardy 698c3e1b005SPatrick McHardy static inline bool nft_set_elem_expired(const struct nft_set_ext *ext) 699c3e1b005SPatrick McHardy { 700c3e1b005SPatrick McHardy return nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION) && 7018e1102d5SFlorian Westphal time_is_before_eq_jiffies64(*nft_set_ext_expiration(ext)); 702c3e1b005SPatrick McHardy } 703c3e1b005SPatrick McHardy 704fe2811ebSPatrick McHardy static inline struct nft_set_ext *nft_set_elem_ext(const struct nft_set *set, 705fe2811ebSPatrick McHardy void *elem) 706fe2811ebSPatrick McHardy { 707fe2811ebSPatrick McHardy return elem + set->ops->elemsize; 708fe2811ebSPatrick McHardy } 709fe2811ebSPatrick McHardy 7108aeff920SPablo Neira Ayuso static inline struct nft_object **nft_set_ext_obj(const struct nft_set_ext *ext) 7118aeff920SPablo Neira Ayuso { 7128aeff920SPablo Neira Ayuso return nft_set_ext(ext, NFT_SET_EXT_OBJREF); 7138aeff920SPablo Neira Ayuso } 7148aeff920SPablo Neira Ayuso 715a7fc9368SPablo Neira Ayuso struct nft_expr *nft_set_elem_expr_alloc(const struct nft_ctx *ctx, 716a7fc9368SPablo Neira Ayuso const struct nft_set *set, 717a7fc9368SPablo Neira Ayuso const struct nlattr *attr); 718a7fc9368SPablo Neira Ayuso 71922fe54d5SPatrick McHardy void *nft_set_elem_init(const struct nft_set *set, 72022fe54d5SPatrick McHardy const struct nft_set_ext_tmpl *tmpl, 7217b225d0bSPablo Neira Ayuso const u32 *key, const u32 *key_end, const u32 *data, 72279ebb5bbSLaura Garcia Liebana u64 timeout, u64 expiration, gfp_t gfp); 723fca05d4dSPablo Neira Ayuso int nft_set_elem_expr_clone(const struct nft_ctx *ctx, struct nft_set *set, 724fca05d4dSPablo Neira Ayuso struct nft_expr *expr_array[]); 72561f9e292SLiping Zhang void nft_set_elem_destroy(const struct nft_set *set, void *elem, 72661f9e292SLiping Zhang bool destroy_expr); 72761edafbbSPatrick McHardy 72820a69341SPatrick McHardy /** 729cfed7e1bSPatrick McHardy * struct nft_set_gc_batch_head - nf_tables set garbage collection batch 730cfed7e1bSPatrick McHardy * 731cfed7e1bSPatrick McHardy * @rcu: rcu head 732cfed7e1bSPatrick McHardy * @set: set the elements belong to 733cfed7e1bSPatrick McHardy * @cnt: count of elements 734cfed7e1bSPatrick McHardy */ 735cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head { 736cfed7e1bSPatrick McHardy struct rcu_head rcu; 737cfed7e1bSPatrick McHardy const struct nft_set *set; 738cfed7e1bSPatrick McHardy unsigned int cnt; 739cfed7e1bSPatrick McHardy }; 740cfed7e1bSPatrick McHardy 741cfed7e1bSPatrick McHardy #define NFT_SET_GC_BATCH_SIZE ((PAGE_SIZE - \ 742cfed7e1bSPatrick McHardy sizeof(struct nft_set_gc_batch_head)) / \ 743cfed7e1bSPatrick McHardy sizeof(void *)) 744cfed7e1bSPatrick McHardy 745cfed7e1bSPatrick McHardy /** 746cfed7e1bSPatrick McHardy * struct nft_set_gc_batch - nf_tables set garbage collection batch 747cfed7e1bSPatrick McHardy * 748cfed7e1bSPatrick McHardy * @head: GC batch head 749cfed7e1bSPatrick McHardy * @elems: garbage collection elements 750cfed7e1bSPatrick McHardy */ 751cfed7e1bSPatrick McHardy struct nft_set_gc_batch { 752cfed7e1bSPatrick McHardy struct nft_set_gc_batch_head head; 753cfed7e1bSPatrick McHardy void *elems[NFT_SET_GC_BATCH_SIZE]; 754cfed7e1bSPatrick McHardy }; 755cfed7e1bSPatrick McHardy 756cfed7e1bSPatrick McHardy struct nft_set_gc_batch *nft_set_gc_batch_alloc(const struct nft_set *set, 757cfed7e1bSPatrick McHardy gfp_t gfp); 758cfed7e1bSPatrick McHardy void nft_set_gc_batch_release(struct rcu_head *rcu); 759cfed7e1bSPatrick McHardy 760cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_complete(struct nft_set_gc_batch *gcb) 761cfed7e1bSPatrick McHardy { 762cfed7e1bSPatrick McHardy if (gcb != NULL) 763cfed7e1bSPatrick McHardy call_rcu(&gcb->head.rcu, nft_set_gc_batch_release); 764cfed7e1bSPatrick McHardy } 765cfed7e1bSPatrick McHardy 766cfed7e1bSPatrick McHardy static inline struct nft_set_gc_batch * 767cfed7e1bSPatrick McHardy nft_set_gc_batch_check(const struct nft_set *set, struct nft_set_gc_batch *gcb, 768cfed7e1bSPatrick McHardy gfp_t gfp) 769cfed7e1bSPatrick McHardy { 770cfed7e1bSPatrick McHardy if (gcb != NULL) { 771cfed7e1bSPatrick McHardy if (gcb->head.cnt + 1 < ARRAY_SIZE(gcb->elems)) 772cfed7e1bSPatrick McHardy return gcb; 773cfed7e1bSPatrick McHardy nft_set_gc_batch_complete(gcb); 774cfed7e1bSPatrick McHardy } 775cfed7e1bSPatrick McHardy return nft_set_gc_batch_alloc(set, gfp); 776cfed7e1bSPatrick McHardy } 777cfed7e1bSPatrick McHardy 778cfed7e1bSPatrick McHardy static inline void nft_set_gc_batch_add(struct nft_set_gc_batch *gcb, 779cfed7e1bSPatrick McHardy void *elem) 780cfed7e1bSPatrick McHardy { 781cfed7e1bSPatrick McHardy gcb->elems[gcb->head.cnt++] = elem; 782cfed7e1bSPatrick McHardy } 783cfed7e1bSPatrick McHardy 784b8e20400SPablo Neira Ayuso struct nft_expr_ops; 785cfed7e1bSPatrick McHardy /** 786ef1f7df9SPatrick McHardy * struct nft_expr_type - nf_tables expression type 78796518518SPatrick McHardy * 788ef1f7df9SPatrick McHardy * @select_ops: function to select nft_expr_ops 789b8e20400SPablo Neira Ayuso * @release_ops: release nft_expr_ops 790ef1f7df9SPatrick McHardy * @ops: default ops, used when no select_ops functions is present 79196518518SPatrick McHardy * @list: used internally 79296518518SPatrick McHardy * @name: Identifier 79396518518SPatrick McHardy * @owner: module reference 79496518518SPatrick McHardy * @policy: netlink attribute policy 79596518518SPatrick McHardy * @maxattr: highest netlink attribute number 79664d46806SPatrick McHardy * @family: address family for AF-specific types 797151d799aSPatrick McHardy * @flags: expression type flags 798ef1f7df9SPatrick McHardy */ 799ef1f7df9SPatrick McHardy struct nft_expr_type { 8000ca743a5SPablo Neira Ayuso const struct nft_expr_ops *(*select_ops)(const struct nft_ctx *, 8010ca743a5SPablo Neira Ayuso const struct nlattr * const tb[]); 802b8e20400SPablo Neira Ayuso void (*release_ops)(const struct nft_expr_ops *ops); 803ef1f7df9SPatrick McHardy const struct nft_expr_ops *ops; 804ef1f7df9SPatrick McHardy struct list_head list; 805ef1f7df9SPatrick McHardy const char *name; 806ef1f7df9SPatrick McHardy struct module *owner; 807ef1f7df9SPatrick McHardy const struct nla_policy *policy; 808ef1f7df9SPatrick McHardy unsigned int maxattr; 80964d46806SPatrick McHardy u8 family; 810151d799aSPatrick McHardy u8 flags; 811ef1f7df9SPatrick McHardy }; 812ef1f7df9SPatrick McHardy 813151d799aSPatrick McHardy #define NFT_EXPR_STATEFUL 0x1 81479b174adSPablo Neira Ayuso #define NFT_EXPR_GC 0x2 815151d799aSPatrick McHardy 816f6ac8585SPablo Neira Ayuso enum nft_trans_phase { 817f6ac8585SPablo Neira Ayuso NFT_TRANS_PREPARE, 818f6ac8585SPablo Neira Ayuso NFT_TRANS_ABORT, 819f6ac8585SPablo Neira Ayuso NFT_TRANS_COMMIT, 820f6ac8585SPablo Neira Ayuso NFT_TRANS_RELEASE 821f6ac8585SPablo Neira Ayuso }; 822f6ac8585SPablo Neira Ayuso 823c9626a2cSPablo Neira Ayuso struct nft_flow_rule; 824c9626a2cSPablo Neira Ayuso struct nft_offload_ctx; 825c9626a2cSPablo Neira Ayuso 826ef1f7df9SPatrick McHardy /** 827ef1f7df9SPatrick McHardy * struct nft_expr_ops - nf_tables expression operations 828ef1f7df9SPatrick McHardy * 829ef1f7df9SPatrick McHardy * @eval: Expression evaluation function 83096518518SPatrick McHardy * @size: full expression size, including private data size 831ef1f7df9SPatrick McHardy * @init: initialization function 832cd5125d8SFlorian Westphal * @activate: activate expression in the next generation 833cd5125d8SFlorian Westphal * @deactivate: deactivate expression in next generation 834cd5125d8SFlorian Westphal * @destroy: destruction function, called after synchronize_rcu 835ef1f7df9SPatrick McHardy * @dump: function to dump parameters 836ef1f7df9SPatrick McHardy * @type: expression type 8370ca743a5SPablo Neira Ayuso * @validate: validate expression, called during loop detection 8380ca743a5SPablo Neira Ayuso * @data: extra data to attach to this expression operation 83996518518SPatrick McHardy */ 84096518518SPatrick McHardy struct nft_expr_ops { 84196518518SPatrick McHardy void (*eval)(const struct nft_expr *expr, 842a55e22e9SPatrick McHardy struct nft_regs *regs, 84396518518SPatrick McHardy const struct nft_pktinfo *pkt); 844086f3321SPablo Neira Ayuso int (*clone)(struct nft_expr *dst, 845086f3321SPablo Neira Ayuso const struct nft_expr *src); 846ef1f7df9SPatrick McHardy unsigned int size; 847ef1f7df9SPatrick McHardy 84896518518SPatrick McHardy int (*init)(const struct nft_ctx *ctx, 84996518518SPatrick McHardy const struct nft_expr *expr, 85096518518SPatrick McHardy const struct nlattr * const tb[]); 851bb7b40aeSPablo Neira Ayuso void (*activate)(const struct nft_ctx *ctx, 852bb7b40aeSPablo Neira Ayuso const struct nft_expr *expr); 853bb7b40aeSPablo Neira Ayuso void (*deactivate)(const struct nft_ctx *ctx, 854f6ac8585SPablo Neira Ayuso const struct nft_expr *expr, 855f6ac8585SPablo Neira Ayuso enum nft_trans_phase phase); 85662472bceSPatrick McHardy void (*destroy)(const struct nft_ctx *ctx, 85762472bceSPatrick McHardy const struct nft_expr *expr); 858371ebcbbSPablo Neira Ayuso void (*destroy_clone)(const struct nft_ctx *ctx, 859371ebcbbSPablo Neira Ayuso const struct nft_expr *expr); 86096518518SPatrick McHardy int (*dump)(struct sk_buff *skb, 86196518518SPatrick McHardy const struct nft_expr *expr); 8620ca743a5SPablo Neira Ayuso int (*validate)(const struct nft_ctx *ctx, 8630ca743a5SPablo Neira Ayuso const struct nft_expr *expr, 8640ca743a5SPablo Neira Ayuso const struct nft_data **data); 86579b174adSPablo Neira Ayuso bool (*gc)(struct net *net, 86679b174adSPablo Neira Ayuso const struct nft_expr *expr); 867c9626a2cSPablo Neira Ayuso int (*offload)(struct nft_offload_ctx *ctx, 868c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow, 869c9626a2cSPablo Neira Ayuso const struct nft_expr *expr); 870c9626a2cSPablo Neira Ayuso u32 offload_flags; 871ef1f7df9SPatrick McHardy const struct nft_expr_type *type; 8720ca743a5SPablo Neira Ayuso void *data; 87396518518SPatrick McHardy }; 87496518518SPatrick McHardy 87596518518SPatrick McHardy /** 87696518518SPatrick McHardy * struct nft_rule - nf_tables rule 87796518518SPatrick McHardy * 87896518518SPatrick McHardy * @list: used internally 87996518518SPatrick McHardy * @handle: rule handle 8800628b123SPablo Neira Ayuso * @genmask: generation mask 88196518518SPatrick McHardy * @dlen: length of expression data 88286f1ec32SPatrick McHardy * @udata: user data is appended to the rule 88396518518SPatrick McHardy * @data: expression data 88496518518SPatrick McHardy */ 88596518518SPatrick McHardy struct nft_rule { 88696518518SPatrick McHardy struct list_head list; 8870768b3b3SPablo Neira Ayuso u64 handle:42, 8880628b123SPablo Neira Ayuso genmask:2, 8890768b3b3SPablo Neira Ayuso dlen:12, 89086f1ec32SPatrick McHardy udata:1; 89196518518SPatrick McHardy unsigned char data[] 89296518518SPatrick McHardy __attribute__((aligned(__alignof__(struct nft_expr)))); 89396518518SPatrick McHardy }; 89496518518SPatrick McHardy 89596518518SPatrick McHardy static inline struct nft_expr *nft_expr_first(const struct nft_rule *rule) 89696518518SPatrick McHardy { 89796518518SPatrick McHardy return (struct nft_expr *)&rule->data[0]; 89896518518SPatrick McHardy } 89996518518SPatrick McHardy 90096518518SPatrick McHardy static inline struct nft_expr *nft_expr_next(const struct nft_expr *expr) 90196518518SPatrick McHardy { 90296518518SPatrick McHardy return ((void *)expr) + expr->ops->size; 90396518518SPatrick McHardy } 90496518518SPatrick McHardy 90596518518SPatrick McHardy static inline struct nft_expr *nft_expr_last(const struct nft_rule *rule) 90696518518SPatrick McHardy { 90796518518SPatrick McHardy return (struct nft_expr *)&rule->data[rule->dlen]; 90896518518SPatrick McHardy } 90996518518SPatrick McHardy 91031cc578aSSaeed Mirzamohammadi static inline bool nft_expr_more(const struct nft_rule *rule, 91131cc578aSSaeed Mirzamohammadi const struct nft_expr *expr) 91231cc578aSSaeed Mirzamohammadi { 91331cc578aSSaeed Mirzamohammadi return expr != nft_expr_last(rule) && expr->ops; 91431cc578aSSaeed Mirzamohammadi } 91531cc578aSSaeed Mirzamohammadi 91686f1ec32SPatrick McHardy static inline struct nft_userdata *nft_userdata(const struct nft_rule *rule) 9170768b3b3SPablo Neira Ayuso { 9180768b3b3SPablo Neira Ayuso return (void *)&rule->data[rule->dlen]; 9190768b3b3SPablo Neira Ayuso } 9200768b3b3SPablo Neira Ayuso 921d0e2c7deSPablo Neira Ayuso void nf_tables_rule_release(const struct nft_ctx *ctx, struct nft_rule *rule); 922d0e2c7deSPablo Neira Ayuso 92376adfafeSPablo Neira Ayuso static inline void nft_set_elem_update_expr(const struct nft_set_ext *ext, 92476adfafeSPablo Neira Ayuso struct nft_regs *regs, 92576adfafeSPablo Neira Ayuso const struct nft_pktinfo *pkt) 92676adfafeSPablo Neira Ayuso { 927563125a7SPablo Neira Ayuso struct nft_set_elem_expr *elem_expr; 92876adfafeSPablo Neira Ayuso struct nft_expr *expr; 929563125a7SPablo Neira Ayuso u32 size; 93076adfafeSPablo Neira Ayuso 931563125a7SPablo Neira Ayuso if (__nft_set_ext_exists(ext, NFT_SET_EXT_EXPRESSIONS)) { 932563125a7SPablo Neira Ayuso elem_expr = nft_set_ext_expr(ext); 933563125a7SPablo Neira Ayuso nft_setelem_expr_foreach(expr, elem_expr, size) { 93476adfafeSPablo Neira Ayuso expr->ops->eval(expr, regs, pkt); 935563125a7SPablo Neira Ayuso if (regs->verdict.code == NFT_BREAK) 936563125a7SPablo Neira Ayuso return; 937563125a7SPablo Neira Ayuso } 93876adfafeSPablo Neira Ayuso } 93976adfafeSPablo Neira Ayuso } 94076adfafeSPablo Neira Ayuso 94196518518SPatrick McHardy /* 94296518518SPatrick McHardy * The last pointer isn't really necessary, but the compiler isn't able to 94396518518SPatrick McHardy * determine that the result of nft_expr_last() is always the same since it 94496518518SPatrick McHardy * can't assume that the dlen value wasn't changed within calls in the loop. 94596518518SPatrick McHardy */ 94696518518SPatrick McHardy #define nft_rule_for_each_expr(expr, last, rule) \ 94796518518SPatrick McHardy for ((expr) = nft_expr_first(rule), (last) = nft_expr_last(rule); \ 94896518518SPatrick McHardy (expr) != (last); \ 94996518518SPatrick McHardy (expr) = nft_expr_next(expr)) 95096518518SPatrick McHardy 951ad652f38SPablo Neira Ayuso #define NFT_CHAIN_POLICY_UNSET U8_MAX 952ad652f38SPablo Neira Ayuso 95396518518SPatrick McHardy /** 95496518518SPatrick McHardy * struct nft_chain - nf_tables chain 95596518518SPatrick McHardy * 95696518518SPatrick McHardy * @rules: list of rules in the chain 95796518518SPatrick McHardy * @list: used internally 9581b2470e5SFlorian Westphal * @rhlhead: used internally 959b5bc89bfSPablo Neira Ayuso * @table: table that this chain belongs to 96096518518SPatrick McHardy * @handle: chain handle 96196518518SPatrick McHardy * @use: number of jump references to this chain 962a0a7379eSPablo Neira Ayuso * @flags: bitmask of enum nft_chain_flags 96396518518SPatrick McHardy * @name: name of the chain 96496518518SPatrick McHardy */ 96596518518SPatrick McHardy struct nft_chain { 9660cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_0; 9670cbc06b3SFlorian Westphal struct nft_rule *__rcu *rules_gen_1; 96896518518SPatrick McHardy struct list_head rules; 96996518518SPatrick McHardy struct list_head list; 9701b2470e5SFlorian Westphal struct rhlist_head rhlhead; 971b5bc89bfSPablo Neira Ayuso struct nft_table *table; 97296518518SPatrick McHardy u64 handle; 973a0a7379eSPablo Neira Ayuso u32 use; 974d0e2c7deSPablo Neira Ayuso u8 flags:5, 975d0e2c7deSPablo Neira Ayuso bound:1, 976664b0f8cSPablo Neira Ayuso genmask:2; 977b7263e07SPhil Sutter char *name; 978002f2176SJose M. Guisado Gomez u16 udlen; 979002f2176SJose M. Guisado Gomez u8 *udata; 9800cbc06b3SFlorian Westphal 9810cbc06b3SFlorian Westphal /* Only used during control plane commit phase: */ 9820cbc06b3SFlorian Westphal struct nft_rule **rules_next; 98396518518SPatrick McHardy }; 98496518518SPatrick McHardy 985a654de8fSPablo Neira Ayuso int nft_chain_validate(const struct nft_ctx *ctx, const struct nft_chain *chain); 986a654de8fSPablo Neira Ayuso 98732537e91SPablo Neira Ayuso enum nft_chain_types { 9889370761cSPablo Neira Ayuso NFT_CHAIN_T_DEFAULT = 0, 9899370761cSPablo Neira Ayuso NFT_CHAIN_T_ROUTE, 9909370761cSPablo Neira Ayuso NFT_CHAIN_T_NAT, 9919370761cSPablo Neira Ayuso NFT_CHAIN_T_MAX 9929370761cSPablo Neira Ayuso }; 9939370761cSPablo Neira Ayuso 9941a1e1a12SPatrick McHardy /** 99532537e91SPablo Neira Ayuso * struct nft_chain_type - nf_tables chain type info 9961a1e1a12SPatrick McHardy * 9971a1e1a12SPatrick McHardy * @name: name of the type 9981a1e1a12SPatrick McHardy * @type: numeric identifier 9991a1e1a12SPatrick McHardy * @family: address family 10001a1e1a12SPatrick McHardy * @owner: module owner 10011a1e1a12SPatrick McHardy * @hook_mask: mask of valid hooks 1002c2f9eafeSPablo Neira Ayuso * @hooks: array of hook functions 10034e25ceb8SFlorian Westphal * @ops_register: base chain register function 10044e25ceb8SFlorian Westphal * @ops_unregister: base chain unregister function 10051a1e1a12SPatrick McHardy */ 100632537e91SPablo Neira Ayuso struct nft_chain_type { 10071a1e1a12SPatrick McHardy const char *name; 100832537e91SPablo Neira Ayuso enum nft_chain_types type; 10091a1e1a12SPatrick McHardy int family; 10101a1e1a12SPatrick McHardy struct module *owner; 10111a1e1a12SPatrick McHardy unsigned int hook_mask; 1012d25e2e93SPablo Neira Ayuso nf_hookfn *hooks[NFT_MAX_HOOKS]; 10134e25ceb8SFlorian Westphal int (*ops_register)(struct net *net, const struct nf_hook_ops *ops); 10144e25ceb8SFlorian Westphal void (*ops_unregister)(struct net *net, const struct nf_hook_ops *ops); 10151a1e1a12SPatrick McHardy }; 10161a1e1a12SPatrick McHardy 10177210e4e3SPablo Neira Ayuso int nft_chain_validate_dependency(const struct nft_chain *chain, 101832537e91SPablo Neira Ayuso enum nft_chain_types type); 101975e8d06dSPablo Neira Ayuso int nft_chain_validate_hooks(const struct nft_chain *chain, 102075e8d06dSPablo Neira Ayuso unsigned int hook_flags); 10217210e4e3SPablo Neira Ayuso 1022d0e2c7deSPablo Neira Ayuso static inline bool nft_chain_is_bound(struct nft_chain *chain) 1023d0e2c7deSPablo Neira Ayuso { 1024d0e2c7deSPablo Neira Ayuso return (chain->flags & NFT_CHAIN_BINDING) && chain->bound; 1025d0e2c7deSPablo Neira Ayuso } 1026d0e2c7deSPablo Neira Ayuso 1027d0e2c7deSPablo Neira Ayuso void nft_chain_del(struct nft_chain *chain); 1028d0e2c7deSPablo Neira Ayuso void nf_tables_chain_destroy(struct nft_ctx *ctx); 1029d0e2c7deSPablo Neira Ayuso 10300ca743a5SPablo Neira Ayuso struct nft_stats { 10310ca743a5SPablo Neira Ayuso u64 bytes; 10320ca743a5SPablo Neira Ayuso u64 pkts; 1033ce355e20SEric Dumazet struct u64_stats_sync syncp; 10340ca743a5SPablo Neira Ayuso }; 10350ca743a5SPablo Neira Ayuso 10363f0465a9SPablo Neira Ayuso struct nft_hook { 10373f0465a9SPablo Neira Ayuso struct list_head list; 1038abadb2f8SPablo Neira Ayuso bool inactive; 10393f0465a9SPablo Neira Ayuso struct nf_hook_ops ops; 10403f0465a9SPablo Neira Ayuso struct rcu_head rcu; 10413f0465a9SPablo Neira Ayuso }; 10423f0465a9SPablo Neira Ayuso 104396518518SPatrick McHardy /** 104496518518SPatrick McHardy * struct nft_base_chain - nf_tables base chain 104596518518SPatrick McHardy * 104696518518SPatrick McHardy * @ops: netfilter hook ops 1047d54725cdSPablo Neira Ayuso * @hook_list: list of netfilter hooks (for NFPROTO_NETDEV family) 10489370761cSPablo Neira Ayuso * @type: chain type 10490ca743a5SPablo Neira Ayuso * @policy: default policy 10500ca743a5SPablo Neira Ayuso * @stats: per-cpu chain stats 105196518518SPatrick McHardy * @chain: the chain 105214bfb13fSPablo Neira Ayuso * @flow_block: flow block (for hardware offload) 105396518518SPatrick McHardy */ 105496518518SPatrick McHardy struct nft_base_chain { 1055c974a3a3SPablo Neira Ayuso struct nf_hook_ops ops; 1056d54725cdSPablo Neira Ayuso struct list_head hook_list; 105732537e91SPablo Neira Ayuso const struct nft_chain_type *type; 10580ca743a5SPablo Neira Ayuso u8 policy; 1059835b8033SPablo Neira Ayuso u8 flags; 10600ca743a5SPablo Neira Ayuso struct nft_stats __percpu *stats; 106196518518SPatrick McHardy struct nft_chain chain; 106214bfb13fSPablo Neira Ayuso struct flow_block flow_block; 106396518518SPatrick McHardy }; 106496518518SPatrick McHardy 106596518518SPatrick McHardy static inline struct nft_base_chain *nft_base_chain(const struct nft_chain *chain) 106696518518SPatrick McHardy { 106796518518SPatrick McHardy return container_of(chain, struct nft_base_chain, chain); 106896518518SPatrick McHardy } 106996518518SPatrick McHardy 1070f323d954SPablo Neira Ayuso static inline bool nft_is_base_chain(const struct nft_chain *chain) 1071f323d954SPablo Neira Ayuso { 107267c49de4SPablo Neira Ayuso return chain->flags & NFT_CHAIN_BASE; 1073f323d954SPablo Neira Ayuso } 1074f323d954SPablo Neira Ayuso 10755ebe0b0eSPablo Neira Ayuso int __nft_release_basechain(struct nft_ctx *ctx); 1076835b8033SPablo Neira Ayuso 107706198b34SEric W. Biederman unsigned int nft_do_chain(struct nft_pktinfo *pkt, void *priv); 107896518518SPatrick McHardy 107996518518SPatrick McHardy /** 108096518518SPatrick McHardy * struct nft_table - nf_tables table 108196518518SPatrick McHardy * 108296518518SPatrick McHardy * @list: used internally 10831b2470e5SFlorian Westphal * @chains_ht: chains in the table 10841b2470e5SFlorian Westphal * @chains: same, for stable walks 108596518518SPatrick McHardy * @sets: sets in the table 1086e5009240SPablo Neira Ayuso * @objects: stateful objects in the table 10873b49e2e9SPablo Neira Ayuso * @flowtables: flow tables in the table 108896518518SPatrick McHardy * @hgenerator: handle generator state 10893ecbfd65SHarsha Sharma * @handle: table handle 109096518518SPatrick McHardy * @use: number of chain references to this table 109196518518SPatrick McHardy * @flags: table flag (see enum nft_table_flags) 1092f2a6d766SPablo Neira Ayuso * @genmask: generation mask 109336596dadSPablo Neira Ayuso * @afinfo: address family info 109496518518SPatrick McHardy * @name: name of the table 109596518518SPatrick McHardy */ 109696518518SPatrick McHardy struct nft_table { 109796518518SPatrick McHardy struct list_head list; 10981b2470e5SFlorian Westphal struct rhltable chains_ht; 109996518518SPatrick McHardy struct list_head chains; 110096518518SPatrick McHardy struct list_head sets; 1101e5009240SPablo Neira Ayuso struct list_head objects; 11023b49e2e9SPablo Neira Ayuso struct list_head flowtables; 110396518518SPatrick McHardy u64 hgenerator; 11043ecbfd65SHarsha Sharma u64 handle; 110596518518SPatrick McHardy u32 use; 110698319cb9SPablo Neira Ayuso u16 family:6, 110798319cb9SPablo Neira Ayuso flags:8, 1108f2a6d766SPablo Neira Ayuso genmask:2; 1109*6001a930SPablo Neira Ayuso u32 nlpid; 1110e46abbccSPhil Sutter char *name; 11117a81575bSJose M. Guisado Gomez u16 udlen; 11127a81575bSJose M. Guisado Gomez u8 *udata; 1113ebddf1a8SPablo Neira Ayuso }; 1114ebddf1a8SPablo Neira Ayuso 1115*6001a930SPablo Neira Ayuso static inline bool nft_table_has_owner(const struct nft_table *table) 1116*6001a930SPablo Neira Ayuso { 1117*6001a930SPablo Neira Ayuso return table->flags & NFT_TABLE_F_OWNER; 1118*6001a930SPablo Neira Ayuso } 1119*6001a930SPablo Neira Ayuso 1120d3519cb8SPablo Neira Ayuso static inline bool nft_base_chain_netdev(int family, u32 hooknum) 1121d3519cb8SPablo Neira Ayuso { 1122d3519cb8SPablo Neira Ayuso return family == NFPROTO_NETDEV || 1123d3519cb8SPablo Neira Ayuso (family == NFPROTO_INET && hooknum == NF_INET_INGRESS); 1124d3519cb8SPablo Neira Ayuso } 1125d3519cb8SPablo Neira Ayuso 1126cc07eeb0SPablo Neira Ayuso void nft_register_chain_type(const struct nft_chain_type *); 112732537e91SPablo Neira Ayuso void nft_unregister_chain_type(const struct nft_chain_type *); 112896518518SPatrick McHardy 11295eccdfaaSJoe Perches int nft_register_expr(struct nft_expr_type *); 11305eccdfaaSJoe Perches void nft_unregister_expr(struct nft_expr_type *); 113196518518SPatrick McHardy 113233d5a7b1SFlorian Westphal int nft_verdict_dump(struct sk_buff *skb, int type, 113333d5a7b1SFlorian Westphal const struct nft_verdict *v); 113433d5a7b1SFlorian Westphal 113533d5a7b1SFlorian Westphal /** 1136d152159bSFlorian Westphal * struct nft_object_hash_key - key to lookup nft_object 1137d152159bSFlorian Westphal * 1138d152159bSFlorian Westphal * @name: name of the stateful object to look up 1139d152159bSFlorian Westphal * @table: table the object belongs to 1140d152159bSFlorian Westphal */ 1141d152159bSFlorian Westphal struct nft_object_hash_key { 1142d152159bSFlorian Westphal const char *name; 1143d152159bSFlorian Westphal const struct nft_table *table; 1144d152159bSFlorian Westphal }; 1145d152159bSFlorian Westphal 1146d152159bSFlorian Westphal /** 1147e5009240SPablo Neira Ayuso * struct nft_object - nf_tables stateful object 1148e5009240SPablo Neira Ayuso * 1149e5009240SPablo Neira Ayuso * @list: table stateful object list node 1150d152159bSFlorian Westphal * @key: keys that identify this object 11514d44175aSFlorian Westphal * @rhlhead: nft_objname_ht node 1152e5009240SPablo Neira Ayuso * @genmask: generation mask 1153e5009240SPablo Neira Ayuso * @use: number of references to this stateful object 11543ecbfd65SHarsha Sharma * @handle: unique object handle 1155dfc46034SPablo M. Bermudo Garay * @ops: object operations 11563ecbfd65SHarsha Sharma * @data: object data, layout depends on type 1157e5009240SPablo Neira Ayuso */ 1158e5009240SPablo Neira Ayuso struct nft_object { 1159e5009240SPablo Neira Ayuso struct list_head list; 11604d44175aSFlorian Westphal struct rhlist_head rhlhead; 1161d152159bSFlorian Westphal struct nft_object_hash_key key; 1162e5009240SPablo Neira Ayuso u32 genmask:2, 1163e5009240SPablo Neira Ayuso use:30; 11643ecbfd65SHarsha Sharma u64 handle; 1165b131c964SJose M. Guisado Gomez u16 udlen; 1166b131c964SJose M. Guisado Gomez u8 *udata; 1167e5009240SPablo Neira Ayuso /* runtime data below here */ 1168dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops ____cacheline_aligned; 1169e5009240SPablo Neira Ayuso unsigned char data[] 1170e5009240SPablo Neira Ayuso __attribute__((aligned(__alignof__(u64)))); 1171e5009240SPablo Neira Ayuso }; 1172e5009240SPablo Neira Ayuso 1173e5009240SPablo Neira Ayuso static inline void *nft_obj_data(const struct nft_object *obj) 1174e5009240SPablo Neira Ayuso { 1175e5009240SPablo Neira Ayuso return (void *)obj->data; 1176e5009240SPablo Neira Ayuso } 1177e5009240SPablo Neira Ayuso 1178e5009240SPablo Neira Ayuso #define nft_expr_obj(expr) *((struct nft_object **)nft_expr_priv(expr)) 1179e5009240SPablo Neira Ayuso 11804d44175aSFlorian Westphal struct nft_object *nft_obj_lookup(const struct net *net, 11814d44175aSFlorian Westphal const struct nft_table *table, 1182e5009240SPablo Neira Ayuso const struct nlattr *nla, u32 objtype, 1183e5009240SPablo Neira Ayuso u8 genmask); 1184e5009240SPablo Neira Ayuso 1185d152159bSFlorian Westphal void nft_obj_notify(struct net *net, const struct nft_table *table, 11862599e989SPablo Neira Ayuso struct nft_object *obj, u32 portid, u32 seq, 11872599e989SPablo Neira Ayuso int event, int family, int report, gfp_t gfp); 11882599e989SPablo Neira Ayuso 1189e5009240SPablo Neira Ayuso /** 1190e5009240SPablo Neira Ayuso * struct nft_object_type - stateful object type 1191e5009240SPablo Neira Ayuso * 1192dfc46034SPablo M. Bermudo Garay * @select_ops: function to select nft_object_ops 1193dfc46034SPablo M. Bermudo Garay * @ops: default ops, used when no select_ops functions is present 1194e5009240SPablo Neira Ayuso * @list: list node in list of object types 1195e5009240SPablo Neira Ayuso * @type: stateful object numeric type 1196e5009240SPablo Neira Ayuso * @owner: module owner 1197e5009240SPablo Neira Ayuso * @maxattr: maximum netlink attribute 1198e5009240SPablo Neira Ayuso * @policy: netlink attribute policy 1199dfc46034SPablo M. Bermudo Garay */ 1200dfc46034SPablo M. Bermudo Garay struct nft_object_type { 1201dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *(*select_ops)(const struct nft_ctx *, 1202dfc46034SPablo M. Bermudo Garay const struct nlattr * const tb[]); 1203dfc46034SPablo M. Bermudo Garay const struct nft_object_ops *ops; 1204dfc46034SPablo M. Bermudo Garay struct list_head list; 1205dfc46034SPablo M. Bermudo Garay u32 type; 1206dfc46034SPablo M. Bermudo Garay unsigned int maxattr; 1207dfc46034SPablo M. Bermudo Garay struct module *owner; 1208dfc46034SPablo M. Bermudo Garay const struct nla_policy *policy; 1209dfc46034SPablo M. Bermudo Garay }; 1210dfc46034SPablo M. Bermudo Garay 1211dfc46034SPablo M. Bermudo Garay /** 1212dfc46034SPablo M. Bermudo Garay * struct nft_object_ops - stateful object operations 1213dfc46034SPablo M. Bermudo Garay * 1214dfc46034SPablo M. Bermudo Garay * @eval: stateful object evaluation function 1215dfc46034SPablo M. Bermudo Garay * @size: stateful object size 1216e5009240SPablo Neira Ayuso * @init: initialize object from netlink attributes 1217e5009240SPablo Neira Ayuso * @destroy: release existing stateful object 1218e5009240SPablo Neira Ayuso * @dump: netlink dump stateful object 1219d62d0ba9SFernando Fernandez Mancera * @update: update stateful object 1220e5009240SPablo Neira Ayuso */ 1221dfc46034SPablo M. Bermudo Garay struct nft_object_ops { 1222e5009240SPablo Neira Ayuso void (*eval)(struct nft_object *obj, 1223e5009240SPablo Neira Ayuso struct nft_regs *regs, 1224e5009240SPablo Neira Ayuso const struct nft_pktinfo *pkt); 1225e5009240SPablo Neira Ayuso unsigned int size; 122684fba055SFlorian Westphal int (*init)(const struct nft_ctx *ctx, 122784fba055SFlorian Westphal const struct nlattr *const tb[], 1228e5009240SPablo Neira Ayuso struct nft_object *obj); 122900bfb320SPablo Neira Ayuso void (*destroy)(const struct nft_ctx *ctx, 123000bfb320SPablo Neira Ayuso struct nft_object *obj); 1231e5009240SPablo Neira Ayuso int (*dump)(struct sk_buff *skb, 123243da04a5SPablo Neira Ayuso struct nft_object *obj, 123343da04a5SPablo Neira Ayuso bool reset); 1234d62d0ba9SFernando Fernandez Mancera void (*update)(struct nft_object *obj, 1235d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj); 1236dfc46034SPablo M. Bermudo Garay const struct nft_object_type *type; 1237e5009240SPablo Neira Ayuso }; 1238e5009240SPablo Neira Ayuso 1239e5009240SPablo Neira Ayuso int nft_register_obj(struct nft_object_type *obj_type); 1240e5009240SPablo Neira Ayuso void nft_unregister_obj(struct nft_object_type *obj_type); 1241e5009240SPablo Neira Ayuso 1242cb662ac6SPablo Neira Ayuso #define NFT_NETDEVICE_MAX 256 1243d92191aaSPablo Neira Ayuso 1244e5009240SPablo Neira Ayuso /** 12453b49e2e9SPablo Neira Ayuso * struct nft_flowtable - nf_tables flow table 12463b49e2e9SPablo Neira Ayuso * 12473b49e2e9SPablo Neira Ayuso * @list: flow table list node in table list 12483b49e2e9SPablo Neira Ayuso * @table: the table the flow table is contained in 12493b49e2e9SPablo Neira Ayuso * @name: name of this flow table 12503b49e2e9SPablo Neira Ayuso * @hooknum: hook number 12513b49e2e9SPablo Neira Ayuso * @ops_len: number of hooks in array 12523b49e2e9SPablo Neira Ayuso * @genmask: generation mask 12533b49e2e9SPablo Neira Ayuso * @use: number of references to this flow table 12543ecbfd65SHarsha Sharma * @handle: unique object handle 1255d92191aaSPablo Neira Ayuso * @dev_name: array of device names 12563b49e2e9SPablo Neira Ayuso * @data: rhashtable and garbage collector 12573b49e2e9SPablo Neira Ayuso * @ops: array of hooks 12583b49e2e9SPablo Neira Ayuso */ 12593b49e2e9SPablo Neira Ayuso struct nft_flowtable { 12603b49e2e9SPablo Neira Ayuso struct list_head list; 12613b49e2e9SPablo Neira Ayuso struct nft_table *table; 12623b49e2e9SPablo Neira Ayuso char *name; 12633b49e2e9SPablo Neira Ayuso int hooknum; 12643b49e2e9SPablo Neira Ayuso int ops_len; 12653b49e2e9SPablo Neira Ayuso u32 genmask:2, 12663b49e2e9SPablo Neira Ayuso use:30; 12673ecbfd65SHarsha Sharma u64 handle; 12683b49e2e9SPablo Neira Ayuso /* runtime data below here */ 12693f0465a9SPablo Neira Ayuso struct list_head hook_list ____cacheline_aligned; 12703b49e2e9SPablo Neira Ayuso struct nf_flowtable data; 12713b49e2e9SPablo Neira Ayuso }; 12723b49e2e9SPablo Neira Ayuso 1273cac20fcdSPablo Neira Ayuso struct nft_flowtable *nft_flowtable_lookup(const struct nft_table *table, 12743b49e2e9SPablo Neira Ayuso const struct nlattr *nla, 12753b49e2e9SPablo Neira Ayuso u8 genmask); 12763b49e2e9SPablo Neira Ayuso 12779b05b6e1SLaura Garcia Liebana void nf_tables_deactivate_flowtable(const struct nft_ctx *ctx, 12789b05b6e1SLaura Garcia Liebana struct nft_flowtable *flowtable, 12799b05b6e1SLaura Garcia Liebana enum nft_trans_phase phase); 12809b05b6e1SLaura Garcia Liebana 12813b49e2e9SPablo Neira Ayuso void nft_register_flowtable_type(struct nf_flowtable_type *type); 12823b49e2e9SPablo Neira Ayuso void nft_unregister_flowtable_type(struct nf_flowtable_type *type); 12833b49e2e9SPablo Neira Ayuso 12843b49e2e9SPablo Neira Ayuso /** 128533d5a7b1SFlorian Westphal * struct nft_traceinfo - nft tracing information and state 128633d5a7b1SFlorian Westphal * 128733d5a7b1SFlorian Westphal * @pkt: pktinfo currently processed 128833d5a7b1SFlorian Westphal * @basechain: base chain currently processed 128933d5a7b1SFlorian Westphal * @chain: chain currently processed 129033d5a7b1SFlorian Westphal * @rule: rule that was evaluated 129133d5a7b1SFlorian Westphal * @verdict: verdict given by rule 129233d5a7b1SFlorian Westphal * @type: event type (enum nft_trace_types) 129333d5a7b1SFlorian Westphal * @packet_dumped: packet headers sent in a previous traceinfo message 129433d5a7b1SFlorian Westphal * @trace: other struct members are initialised 129533d5a7b1SFlorian Westphal */ 129633d5a7b1SFlorian Westphal struct nft_traceinfo { 129733d5a7b1SFlorian Westphal const struct nft_pktinfo *pkt; 129833d5a7b1SFlorian Westphal const struct nft_base_chain *basechain; 129933d5a7b1SFlorian Westphal const struct nft_chain *chain; 130033d5a7b1SFlorian Westphal const struct nft_rule *rule; 130133d5a7b1SFlorian Westphal const struct nft_verdict *verdict; 130233d5a7b1SFlorian Westphal enum nft_trace_types type; 130333d5a7b1SFlorian Westphal bool packet_dumped; 130433d5a7b1SFlorian Westphal bool trace; 130533d5a7b1SFlorian Westphal }; 130633d5a7b1SFlorian Westphal 130733d5a7b1SFlorian Westphal void nft_trace_init(struct nft_traceinfo *info, const struct nft_pktinfo *pkt, 130833d5a7b1SFlorian Westphal const struct nft_verdict *verdict, 130933d5a7b1SFlorian Westphal const struct nft_chain *basechain); 131033d5a7b1SFlorian Westphal 131133d5a7b1SFlorian Westphal void nft_trace_notify(struct nft_traceinfo *info); 131233d5a7b1SFlorian Westphal 13139370761cSPablo Neira Ayuso #define MODULE_ALIAS_NFT_CHAIN(family, name) \ 13149370761cSPablo Neira Ayuso MODULE_ALIAS("nft-chain-" __stringify(family) "-" name) 131596518518SPatrick McHardy 131664d46806SPatrick McHardy #define MODULE_ALIAS_NFT_AF_EXPR(family, name) \ 131764d46806SPatrick McHardy MODULE_ALIAS("nft-expr-" __stringify(family) "-" name) 131864d46806SPatrick McHardy 131996518518SPatrick McHardy #define MODULE_ALIAS_NFT_EXPR(name) \ 132096518518SPatrick McHardy MODULE_ALIAS("nft-expr-" name) 132196518518SPatrick McHardy 1322e5009240SPablo Neira Ayuso #define MODULE_ALIAS_NFT_OBJ(type) \ 1323e5009240SPablo Neira Ayuso MODULE_ALIAS("nft-obj-" __stringify(type)) 1324e5009240SPablo Neira Ayuso 132547e640afSJeremy Sowden #if IS_ENABLED(CONFIG_NF_TABLES) 132647e640afSJeremy Sowden 1327ea4bd995SPatrick McHardy /* 1328ea4bd995SPatrick McHardy * The gencursor defines two generations, the currently active and the 1329ea4bd995SPatrick McHardy * next one. Objects contain a bitmask of 2 bits specifying the generations 1330ea4bd995SPatrick McHardy * they're active in. A set bit means they're inactive in the generation 1331ea4bd995SPatrick McHardy * represented by that bit. 1332ea4bd995SPatrick McHardy * 1333ea4bd995SPatrick McHardy * New objects start out as inactive in the current and active in the 1334ea4bd995SPatrick McHardy * next generation. When committing the ruleset the bitmask is cleared, 1335ea4bd995SPatrick McHardy * meaning they're active in all generations. When removing an object, 1336ea4bd995SPatrick McHardy * it is set inactive in the next generation. After committing the ruleset, 1337ea4bd995SPatrick McHardy * the objects are removed. 1338ea4bd995SPatrick McHardy */ 1339ea4bd995SPatrick McHardy static inline unsigned int nft_gencursor_next(const struct net *net) 1340ea4bd995SPatrick McHardy { 1341ea4bd995SPatrick McHardy return net->nft.gencursor + 1 == 1 ? 1 : 0; 1342ea4bd995SPatrick McHardy } 1343ea4bd995SPatrick McHardy 1344ea4bd995SPatrick McHardy static inline u8 nft_genmask_next(const struct net *net) 1345ea4bd995SPatrick McHardy { 1346ea4bd995SPatrick McHardy return 1 << nft_gencursor_next(net); 1347ea4bd995SPatrick McHardy } 1348ea4bd995SPatrick McHardy 1349ea4bd995SPatrick McHardy static inline u8 nft_genmask_cur(const struct net *net) 1350ea4bd995SPatrick McHardy { 135114cd5d4aSMark Rutland /* Use READ_ONCE() to prevent refetching the value for atomicity */ 135214cd5d4aSMark Rutland return 1 << READ_ONCE(net->nft.gencursor); 1353ea4bd995SPatrick McHardy } 1354ea4bd995SPatrick McHardy 135522fe54d5SPatrick McHardy #define NFT_GENMASK_ANY ((1 << 0) | (1 << 1)) 135622fe54d5SPatrick McHardy 1357cc02e457SPatrick McHardy /* 1358889f7ee7SPablo Neira Ayuso * Generic transaction helpers 1359889f7ee7SPablo Neira Ayuso */ 1360889f7ee7SPablo Neira Ayuso 1361889f7ee7SPablo Neira Ayuso /* Check if this object is currently active. */ 1362889f7ee7SPablo Neira Ayuso #define nft_is_active(__net, __obj) \ 1363889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_cur(__net)) == 0) 1364889f7ee7SPablo Neira Ayuso 1365889f7ee7SPablo Neira Ayuso /* Check if this object is active in the next generation. */ 1366889f7ee7SPablo Neira Ayuso #define nft_is_active_next(__net, __obj) \ 1367889f7ee7SPablo Neira Ayuso (((__obj)->genmask & nft_genmask_next(__net)) == 0) 1368889f7ee7SPablo Neira Ayuso 1369889f7ee7SPablo Neira Ayuso /* This object becomes active in the next generation. */ 1370889f7ee7SPablo Neira Ayuso #define nft_activate_next(__net, __obj) \ 1371889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_cur(__net) 1372889f7ee7SPablo Neira Ayuso 1373889f7ee7SPablo Neira Ayuso /* This object becomes inactive in the next generation. */ 1374889f7ee7SPablo Neira Ayuso #define nft_deactivate_next(__net, __obj) \ 1375889f7ee7SPablo Neira Ayuso (__obj)->genmask = nft_genmask_next(__net) 1376889f7ee7SPablo Neira Ayuso 1377889f7ee7SPablo Neira Ayuso /* After committing the ruleset, clear the stale generation bit. */ 1378889f7ee7SPablo Neira Ayuso #define nft_clear(__net, __obj) \ 1379889f7ee7SPablo Neira Ayuso (__obj)->genmask &= ~nft_genmask_next(__net) 1380f2a6d766SPablo Neira Ayuso #define nft_active_genmask(__obj, __genmask) \ 1381f2a6d766SPablo Neira Ayuso !((__obj)->genmask & __genmask) 1382889f7ee7SPablo Neira Ayuso 1383889f7ee7SPablo Neira Ayuso /* 1384cc02e457SPatrick McHardy * Set element transaction helpers 1385cc02e457SPatrick McHardy */ 1386cc02e457SPatrick McHardy 1387cc02e457SPatrick McHardy static inline bool nft_set_elem_active(const struct nft_set_ext *ext, 1388cc02e457SPatrick McHardy u8 genmask) 1389cc02e457SPatrick McHardy { 1390cc02e457SPatrick McHardy return !(ext->genmask & genmask); 1391cc02e457SPatrick McHardy } 1392cc02e457SPatrick McHardy 139342a55769SPablo Neira Ayuso static inline void nft_set_elem_change_active(const struct net *net, 139442a55769SPablo Neira Ayuso const struct nft_set *set, 1395cc02e457SPatrick McHardy struct nft_set_ext *ext) 1396cc02e457SPatrick McHardy { 139742a55769SPablo Neira Ayuso ext->genmask ^= nft_genmask_next(net); 1398cc02e457SPatrick McHardy } 1399cc02e457SPatrick McHardy 140047e640afSJeremy Sowden #endif /* IS_ENABLED(CONFIG_NF_TABLES) */ 140147e640afSJeremy Sowden 140269086658SPatrick McHardy /* 140369086658SPatrick McHardy * We use a free bit in the genmask field to indicate the element 140469086658SPatrick McHardy * is busy, meaning it is currently being processed either by 140569086658SPatrick McHardy * the netlink API or GC. 140669086658SPatrick McHardy * 140769086658SPatrick McHardy * Even though the genmask is only a single byte wide, this works 140869086658SPatrick McHardy * because the extension structure if fully constant once initialized, 140969086658SPatrick McHardy * so there are no non-atomic write accesses unless it is already 141069086658SPatrick McHardy * marked busy. 141169086658SPatrick McHardy */ 141269086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_MASK (1 << 2) 141369086658SPatrick McHardy 141469086658SPatrick McHardy #if defined(__LITTLE_ENDIAN_BITFIELD) 141569086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT 2 141669086658SPatrick McHardy #elif defined(__BIG_ENDIAN_BITFIELD) 141769086658SPatrick McHardy #define NFT_SET_ELEM_BUSY_BIT (BITS_PER_LONG - BITS_PER_BYTE + 2) 141869086658SPatrick McHardy #else 141969086658SPatrick McHardy #error 142069086658SPatrick McHardy #endif 142169086658SPatrick McHardy 142269086658SPatrick McHardy static inline int nft_set_elem_mark_busy(struct nft_set_ext *ext) 142369086658SPatrick McHardy { 142469086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 142569086658SPatrick McHardy 142669086658SPatrick McHardy BUILD_BUG_ON(offsetof(struct nft_set_ext, genmask) != 0); 142769086658SPatrick McHardy return test_and_set_bit(NFT_SET_ELEM_BUSY_BIT, word); 142869086658SPatrick McHardy } 142969086658SPatrick McHardy 143069086658SPatrick McHardy static inline void nft_set_elem_clear_busy(struct nft_set_ext *ext) 143169086658SPatrick McHardy { 143269086658SPatrick McHardy unsigned long *word = (unsigned long *)ext; 143369086658SPatrick McHardy 143469086658SPatrick McHardy clear_bit(NFT_SET_ELEM_BUSY_BIT, word); 143569086658SPatrick McHardy } 143669086658SPatrick McHardy 14371a1e1a12SPatrick McHardy /** 14381a1e1a12SPatrick McHardy * struct nft_trans - nf_tables object update in transaction 14391a1e1a12SPatrick McHardy * 14401a1e1a12SPatrick McHardy * @list: used internally 14411a1e1a12SPatrick McHardy * @msg_type: message type 14420935d558SFlorian Westphal * @put_net: ctx->net needs to be put 14431a1e1a12SPatrick McHardy * @ctx: transaction context 14441a1e1a12SPatrick McHardy * @data: internal information related to the transaction 14451a1e1a12SPatrick McHardy */ 14461a1e1a12SPatrick McHardy struct nft_trans { 14471a1e1a12SPatrick McHardy struct list_head list; 14481a1e1a12SPatrick McHardy int msg_type; 14490935d558SFlorian Westphal bool put_net; 14501a1e1a12SPatrick McHardy struct nft_ctx ctx; 14516daf1414SGustavo A. R. Silva char data[]; 14521a1e1a12SPatrick McHardy }; 14531a1e1a12SPatrick McHardy 14541a1e1a12SPatrick McHardy struct nft_trans_rule { 14551a1e1a12SPatrick McHardy struct nft_rule *rule; 1456c9626a2cSPablo Neira Ayuso struct nft_flow_rule *flow; 14571a94e38dSPablo Neira Ayuso u32 rule_id; 14581a1e1a12SPatrick McHardy }; 14591a1e1a12SPatrick McHardy 14601a1e1a12SPatrick McHardy #define nft_trans_rule(trans) \ 14611a1e1a12SPatrick McHardy (((struct nft_trans_rule *)trans->data)->rule) 1462c9626a2cSPablo Neira Ayuso #define nft_trans_flow_rule(trans) \ 1463c9626a2cSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->flow) 14641a94e38dSPablo Neira Ayuso #define nft_trans_rule_id(trans) \ 14651a94e38dSPablo Neira Ayuso (((struct nft_trans_rule *)trans->data)->rule_id) 14661a1e1a12SPatrick McHardy 14671a1e1a12SPatrick McHardy struct nft_trans_set { 14681a1e1a12SPatrick McHardy struct nft_set *set; 14691a1e1a12SPatrick McHardy u32 set_id; 14706a0a8d10SPablo Neira Ayuso bool bound; 14711a1e1a12SPatrick McHardy }; 14721a1e1a12SPatrick McHardy 14731a1e1a12SPatrick McHardy #define nft_trans_set(trans) \ 14741a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set) 14751a1e1a12SPatrick McHardy #define nft_trans_set_id(trans) \ 14761a1e1a12SPatrick McHardy (((struct nft_trans_set *)trans->data)->set_id) 14776a0a8d10SPablo Neira Ayuso #define nft_trans_set_bound(trans) \ 14786a0a8d10SPablo Neira Ayuso (((struct nft_trans_set *)trans->data)->bound) 14791a1e1a12SPatrick McHardy 14801a1e1a12SPatrick McHardy struct nft_trans_chain { 14811a1e1a12SPatrick McHardy bool update; 1482b7263e07SPhil Sutter char *name; 14831a1e1a12SPatrick McHardy struct nft_stats __percpu *stats; 14841a1e1a12SPatrick McHardy u8 policy; 148574cccc3dSPablo Neira Ayuso u32 chain_id; 14861a1e1a12SPatrick McHardy }; 14871a1e1a12SPatrick McHardy 14881a1e1a12SPatrick McHardy #define nft_trans_chain_update(trans) \ 14891a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->update) 14901a1e1a12SPatrick McHardy #define nft_trans_chain_name(trans) \ 14911a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->name) 14921a1e1a12SPatrick McHardy #define nft_trans_chain_stats(trans) \ 14931a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->stats) 14941a1e1a12SPatrick McHardy #define nft_trans_chain_policy(trans) \ 14951a1e1a12SPatrick McHardy (((struct nft_trans_chain *)trans->data)->policy) 149674cccc3dSPablo Neira Ayuso #define nft_trans_chain_id(trans) \ 149774cccc3dSPablo Neira Ayuso (((struct nft_trans_chain *)trans->data)->chain_id) 14981a1e1a12SPatrick McHardy 14991a1e1a12SPatrick McHardy struct nft_trans_table { 15001a1e1a12SPatrick McHardy bool update; 15011a1e1a12SPatrick McHardy bool enable; 15021a1e1a12SPatrick McHardy }; 15031a1e1a12SPatrick McHardy 15041a1e1a12SPatrick McHardy #define nft_trans_table_update(trans) \ 15051a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->update) 15061a1e1a12SPatrick McHardy #define nft_trans_table_enable(trans) \ 15071a1e1a12SPatrick McHardy (((struct nft_trans_table *)trans->data)->enable) 15081a1e1a12SPatrick McHardy 15091a1e1a12SPatrick McHardy struct nft_trans_elem { 15101a1e1a12SPatrick McHardy struct nft_set *set; 15111a1e1a12SPatrick McHardy struct nft_set_elem elem; 15126a0a8d10SPablo Neira Ayuso bool bound; 15131a1e1a12SPatrick McHardy }; 15141a1e1a12SPatrick McHardy 15151a1e1a12SPatrick McHardy #define nft_trans_elem_set(trans) \ 15161a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->set) 15171a1e1a12SPatrick McHardy #define nft_trans_elem(trans) \ 15181a1e1a12SPatrick McHardy (((struct nft_trans_elem *)trans->data)->elem) 15196a0a8d10SPablo Neira Ayuso #define nft_trans_elem_set_bound(trans) \ 15206a0a8d10SPablo Neira Ayuso (((struct nft_trans_elem *)trans->data)->bound) 15211a1e1a12SPatrick McHardy 1522e5009240SPablo Neira Ayuso struct nft_trans_obj { 1523e5009240SPablo Neira Ayuso struct nft_object *obj; 1524d62d0ba9SFernando Fernandez Mancera struct nft_object *newobj; 1525d62d0ba9SFernando Fernandez Mancera bool update; 1526e5009240SPablo Neira Ayuso }; 1527e5009240SPablo Neira Ayuso 1528e5009240SPablo Neira Ayuso #define nft_trans_obj(trans) \ 1529e5009240SPablo Neira Ayuso (((struct nft_trans_obj *)trans->data)->obj) 1530d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_newobj(trans) \ 1531d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->newobj) 1532d62d0ba9SFernando Fernandez Mancera #define nft_trans_obj_update(trans) \ 1533d62d0ba9SFernando Fernandez Mancera (((struct nft_trans_obj *)trans->data)->update) 1534e5009240SPablo Neira Ayuso 15353b49e2e9SPablo Neira Ayuso struct nft_trans_flowtable { 15363b49e2e9SPablo Neira Ayuso struct nft_flowtable *flowtable; 153778d9f48fSPablo Neira Ayuso bool update; 153878d9f48fSPablo Neira Ayuso struct list_head hook_list; 15393b49e2e9SPablo Neira Ayuso }; 15403b49e2e9SPablo Neira Ayuso 15413b49e2e9SPablo Neira Ayuso #define nft_trans_flowtable(trans) \ 15423b49e2e9SPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->flowtable) 154378d9f48fSPablo Neira Ayuso #define nft_trans_flowtable_update(trans) \ 154478d9f48fSPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->update) 154578d9f48fSPablo Neira Ayuso #define nft_trans_flowtable_hooks(trans) \ 154678d9f48fSPablo Neira Ayuso (((struct nft_trans_flowtable *)trans->data)->hook_list) 15473b49e2e9SPablo Neira Ayuso 154802c7b25eSPablo Neira Ayuso int __init nft_chain_filter_init(void); 1549d209df3eSFlorian Westphal void nft_chain_filter_fini(void); 155002c7b25eSPablo Neira Ayuso 1551c1deb065SFlorian Westphal void __init nft_chain_route_init(void); 1552c1deb065SFlorian Westphal void nft_chain_route_fini(void); 1553ffe8923fSFlorian Westphal 1554ffe8923fSFlorian Westphal void nf_tables_trans_destroy_flush_work(void); 1555917d80d3SPablo Neira Ayuso 1556917d80d3SPablo Neira Ayuso int nf_msecs_to_jiffies64(const struct nlattr *nla, u64 *result); 1557917d80d3SPablo Neira Ayuso __be64 nf_jiffies64_to_msecs(u64 input); 1558917d80d3SPablo Neira Ayuso 155996518518SPatrick McHardy #endif /* _NET_NF_TABLES_H */ 1560