1daedfb22SAlexei Starovoitov /* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com 2daedfb22SAlexei Starovoitov * 3daedfb22SAlexei Starovoitov * This program is free software; you can redistribute it and/or 4daedfb22SAlexei Starovoitov * modify it under the terms of version 2 of the GNU General Public 5daedfb22SAlexei Starovoitov * License as published by the Free Software Foundation. 6daedfb22SAlexei Starovoitov */ 7daedfb22SAlexei Starovoitov #ifndef _UAPI__LINUX_BPF_H__ 8daedfb22SAlexei Starovoitov #define _UAPI__LINUX_BPF_H__ 9daedfb22SAlexei Starovoitov 10daedfb22SAlexei Starovoitov #include <linux/types.h> 11c15952dcSAlexei Starovoitov #include <linux/bpf_common.h> 12daedfb22SAlexei Starovoitov 13daedfb22SAlexei Starovoitov /* Extended instruction set based on top of classic BPF */ 14daedfb22SAlexei Starovoitov 15daedfb22SAlexei Starovoitov /* instruction classes */ 16daedfb22SAlexei Starovoitov #define BPF_ALU64 0x07 /* alu mode in double word width */ 17daedfb22SAlexei Starovoitov 18daedfb22SAlexei Starovoitov /* ld/ldx fields */ 19daedfb22SAlexei Starovoitov #define BPF_DW 0x18 /* double word */ 20daedfb22SAlexei Starovoitov #define BPF_XADD 0xc0 /* exclusive add */ 21daedfb22SAlexei Starovoitov 22daedfb22SAlexei Starovoitov /* alu/jmp fields */ 23daedfb22SAlexei Starovoitov #define BPF_MOV 0xb0 /* mov reg to reg */ 24daedfb22SAlexei Starovoitov #define BPF_ARSH 0xc0 /* sign extending arithmetic shift right */ 25daedfb22SAlexei Starovoitov 26daedfb22SAlexei Starovoitov /* change endianness of a register */ 27daedfb22SAlexei Starovoitov #define BPF_END 0xd0 /* flags for endianness conversion: */ 28daedfb22SAlexei Starovoitov #define BPF_TO_LE 0x00 /* convert to little-endian */ 29daedfb22SAlexei Starovoitov #define BPF_TO_BE 0x08 /* convert to big-endian */ 30daedfb22SAlexei Starovoitov #define BPF_FROM_LE BPF_TO_LE 31daedfb22SAlexei Starovoitov #define BPF_FROM_BE BPF_TO_BE 32daedfb22SAlexei Starovoitov 33daedfb22SAlexei Starovoitov #define BPF_JNE 0x50 /* jump != */ 34daedfb22SAlexei Starovoitov #define BPF_JSGT 0x60 /* SGT is signed '>', GT in x86 */ 35daedfb22SAlexei Starovoitov #define BPF_JSGE 0x70 /* SGE is signed '>=', GE in x86 */ 36daedfb22SAlexei Starovoitov #define BPF_CALL 0x80 /* function call */ 37daedfb22SAlexei Starovoitov #define BPF_EXIT 0x90 /* function return */ 38daedfb22SAlexei Starovoitov 39daedfb22SAlexei Starovoitov /* Register numbers */ 40daedfb22SAlexei Starovoitov enum { 41daedfb22SAlexei Starovoitov BPF_REG_0 = 0, 42daedfb22SAlexei Starovoitov BPF_REG_1, 43daedfb22SAlexei Starovoitov BPF_REG_2, 44daedfb22SAlexei Starovoitov BPF_REG_3, 45daedfb22SAlexei Starovoitov BPF_REG_4, 46daedfb22SAlexei Starovoitov BPF_REG_5, 47daedfb22SAlexei Starovoitov BPF_REG_6, 48daedfb22SAlexei Starovoitov BPF_REG_7, 49daedfb22SAlexei Starovoitov BPF_REG_8, 50daedfb22SAlexei Starovoitov BPF_REG_9, 51daedfb22SAlexei Starovoitov BPF_REG_10, 52daedfb22SAlexei Starovoitov __MAX_BPF_REG, 53daedfb22SAlexei Starovoitov }; 54daedfb22SAlexei Starovoitov 55daedfb22SAlexei Starovoitov /* BPF has 10 general purpose 64-bit registers and stack frame. */ 56daedfb22SAlexei Starovoitov #define MAX_BPF_REG __MAX_BPF_REG 57daedfb22SAlexei Starovoitov 58daedfb22SAlexei Starovoitov struct bpf_insn { 59daedfb22SAlexei Starovoitov __u8 code; /* opcode */ 60daedfb22SAlexei Starovoitov __u8 dst_reg:4; /* dest register */ 61daedfb22SAlexei Starovoitov __u8 src_reg:4; /* source register */ 62daedfb22SAlexei Starovoitov __s16 off; /* signed offset */ 63daedfb22SAlexei Starovoitov __s32 imm; /* signed immediate constant */ 64daedfb22SAlexei Starovoitov }; 65daedfb22SAlexei Starovoitov 66b2197755SDaniel Borkmann /* BPF syscall commands, see bpf(2) man-page for details. */ 6799c55f7dSAlexei Starovoitov enum bpf_cmd { 6899c55f7dSAlexei Starovoitov BPF_MAP_CREATE, 69db20fd2bSAlexei Starovoitov BPF_MAP_LOOKUP_ELEM, 70db20fd2bSAlexei Starovoitov BPF_MAP_UPDATE_ELEM, 71db20fd2bSAlexei Starovoitov BPF_MAP_DELETE_ELEM, 72db20fd2bSAlexei Starovoitov BPF_MAP_GET_NEXT_KEY, 7309756af4SAlexei Starovoitov BPF_PROG_LOAD, 74b2197755SDaniel Borkmann BPF_OBJ_PIN, 75b2197755SDaniel Borkmann BPF_OBJ_GET, 7699c55f7dSAlexei Starovoitov }; 7799c55f7dSAlexei Starovoitov 7899c55f7dSAlexei Starovoitov enum bpf_map_type { 7999c55f7dSAlexei Starovoitov BPF_MAP_TYPE_UNSPEC, 800f8e4bd8SAlexei Starovoitov BPF_MAP_TYPE_HASH, 8128fbcfa0SAlexei Starovoitov BPF_MAP_TYPE_ARRAY, 8204fd61abSAlexei Starovoitov BPF_MAP_TYPE_PROG_ARRAY, 83ea317b26SKaixu Xia BPF_MAP_TYPE_PERF_EVENT_ARRAY, 84824bd0ceSAlexei Starovoitov BPF_MAP_TYPE_PERCPU_HASH, 85a10423b8SAlexei Starovoitov BPF_MAP_TYPE_PERCPU_ARRAY, 86d5a3b1f6SAlexei Starovoitov BPF_MAP_TYPE_STACK_TRACE, 8799c55f7dSAlexei Starovoitov }; 8899c55f7dSAlexei Starovoitov 8909756af4SAlexei Starovoitov enum bpf_prog_type { 9009756af4SAlexei Starovoitov BPF_PROG_TYPE_UNSPEC, 91ddd872bcSAlexei Starovoitov BPF_PROG_TYPE_SOCKET_FILTER, 922541517cSAlexei Starovoitov BPF_PROG_TYPE_KPROBE, 9396be4325SDaniel Borkmann BPF_PROG_TYPE_SCHED_CLS, 9494caee8cSDaniel Borkmann BPF_PROG_TYPE_SCHED_ACT, 9509756af4SAlexei Starovoitov }; 9609756af4SAlexei Starovoitov 97f1a66f85SDaniel Borkmann #define BPF_PSEUDO_MAP_FD 1 98f1a66f85SDaniel Borkmann 993274f520SAlexei Starovoitov /* flags for BPF_MAP_UPDATE_ELEM command */ 1003274f520SAlexei Starovoitov #define BPF_ANY 0 /* create new element or update existing */ 1013274f520SAlexei Starovoitov #define BPF_NOEXIST 1 /* create new element if it didn't exist */ 1023274f520SAlexei Starovoitov #define BPF_EXIST 2 /* update existing element */ 1033274f520SAlexei Starovoitov 1046c905981SAlexei Starovoitov #define BPF_F_NO_PREALLOC (1U << 0) 1056c905981SAlexei Starovoitov 10699c55f7dSAlexei Starovoitov union bpf_attr { 10799c55f7dSAlexei Starovoitov struct { /* anonymous struct used by BPF_MAP_CREATE command */ 10899c55f7dSAlexei Starovoitov __u32 map_type; /* one of enum bpf_map_type */ 10999c55f7dSAlexei Starovoitov __u32 key_size; /* size of key in bytes */ 11099c55f7dSAlexei Starovoitov __u32 value_size; /* size of value in bytes */ 11199c55f7dSAlexei Starovoitov __u32 max_entries; /* max number of entries in a map */ 1126c905981SAlexei Starovoitov __u32 map_flags; /* prealloc or not */ 11399c55f7dSAlexei Starovoitov }; 114db20fd2bSAlexei Starovoitov 115db20fd2bSAlexei Starovoitov struct { /* anonymous struct used by BPF_MAP_*_ELEM commands */ 116db20fd2bSAlexei Starovoitov __u32 map_fd; 117db20fd2bSAlexei Starovoitov __aligned_u64 key; 118db20fd2bSAlexei Starovoitov union { 119db20fd2bSAlexei Starovoitov __aligned_u64 value; 120db20fd2bSAlexei Starovoitov __aligned_u64 next_key; 121db20fd2bSAlexei Starovoitov }; 1223274f520SAlexei Starovoitov __u64 flags; 123db20fd2bSAlexei Starovoitov }; 12409756af4SAlexei Starovoitov 12509756af4SAlexei Starovoitov struct { /* anonymous struct used by BPF_PROG_LOAD command */ 12609756af4SAlexei Starovoitov __u32 prog_type; /* one of enum bpf_prog_type */ 12709756af4SAlexei Starovoitov __u32 insn_cnt; 12809756af4SAlexei Starovoitov __aligned_u64 insns; 12909756af4SAlexei Starovoitov __aligned_u64 license; 130cbd35700SAlexei Starovoitov __u32 log_level; /* verbosity level of verifier */ 131cbd35700SAlexei Starovoitov __u32 log_size; /* size of user buffer */ 132cbd35700SAlexei Starovoitov __aligned_u64 log_buf; /* user supplied buffer */ 1332541517cSAlexei Starovoitov __u32 kern_version; /* checked when prog_type=kprobe */ 13409756af4SAlexei Starovoitov }; 135b2197755SDaniel Borkmann 136b2197755SDaniel Borkmann struct { /* anonymous struct used by BPF_OBJ_* commands */ 137b2197755SDaniel Borkmann __aligned_u64 pathname; 138b2197755SDaniel Borkmann __u32 bpf_fd; 139b2197755SDaniel Borkmann }; 14099c55f7dSAlexei Starovoitov } __attribute__((aligned(8))); 14199c55f7dSAlexei Starovoitov 14209756af4SAlexei Starovoitov /* integer value in 'imm' field of BPF_CALL instruction selects which helper 14309756af4SAlexei Starovoitov * function eBPF program intends to call 14409756af4SAlexei Starovoitov */ 14509756af4SAlexei Starovoitov enum bpf_func_id { 14609756af4SAlexei Starovoitov BPF_FUNC_unspec, 147d0003ec0SAlexei Starovoitov BPF_FUNC_map_lookup_elem, /* void *map_lookup_elem(&map, &key) */ 148d0003ec0SAlexei Starovoitov BPF_FUNC_map_update_elem, /* int map_update_elem(&map, &key, &value, flags) */ 149d0003ec0SAlexei Starovoitov BPF_FUNC_map_delete_elem, /* int map_delete_elem(&map, &key) */ 1502541517cSAlexei Starovoitov BPF_FUNC_probe_read, /* int bpf_probe_read(void *dst, int size, void *src) */ 151d9847d31SAlexei Starovoitov BPF_FUNC_ktime_get_ns, /* u64 bpf_ktime_get_ns(void) */ 1529c959c86SAlexei Starovoitov BPF_FUNC_trace_printk, /* int bpf_trace_printk(const char *fmt, int fmt_size, ...) */ 15303e69b50SDaniel Borkmann BPF_FUNC_get_prandom_u32, /* u32 prandom_u32(void) */ 154c04167ceSDaniel Borkmann BPF_FUNC_get_smp_processor_id, /* u32 raw_smp_processor_id(void) */ 15591bc4822SAlexei Starovoitov 15691bc4822SAlexei Starovoitov /** 15791bc4822SAlexei Starovoitov * skb_store_bytes(skb, offset, from, len, flags) - store bytes into packet 15891bc4822SAlexei Starovoitov * @skb: pointer to skb 159a166151cSAlexei Starovoitov * @offset: offset within packet from skb->mac_header 16091bc4822SAlexei Starovoitov * @from: pointer where to copy bytes from 16191bc4822SAlexei Starovoitov * @len: number of bytes to store into packet 16291bc4822SAlexei Starovoitov * @flags: bit 0 - if true, recompute skb->csum 16391bc4822SAlexei Starovoitov * other bits - reserved 16491bc4822SAlexei Starovoitov * Return: 0 on success 16591bc4822SAlexei Starovoitov */ 16691bc4822SAlexei Starovoitov BPF_FUNC_skb_store_bytes, 16791bc4822SAlexei Starovoitov 16891bc4822SAlexei Starovoitov /** 16991bc4822SAlexei Starovoitov * l3_csum_replace(skb, offset, from, to, flags) - recompute IP checksum 17091bc4822SAlexei Starovoitov * @skb: pointer to skb 17191bc4822SAlexei Starovoitov * @offset: offset within packet where IP checksum is located 17291bc4822SAlexei Starovoitov * @from: old value of header field 17391bc4822SAlexei Starovoitov * @to: new value of header field 17491bc4822SAlexei Starovoitov * @flags: bits 0-3 - size of header field 17591bc4822SAlexei Starovoitov * other bits - reserved 17691bc4822SAlexei Starovoitov * Return: 0 on success 17791bc4822SAlexei Starovoitov */ 17891bc4822SAlexei Starovoitov BPF_FUNC_l3_csum_replace, 17991bc4822SAlexei Starovoitov 18091bc4822SAlexei Starovoitov /** 18191bc4822SAlexei Starovoitov * l4_csum_replace(skb, offset, from, to, flags) - recompute TCP/UDP checksum 18291bc4822SAlexei Starovoitov * @skb: pointer to skb 18391bc4822SAlexei Starovoitov * @offset: offset within packet where TCP/UDP checksum is located 18491bc4822SAlexei Starovoitov * @from: old value of header field 18591bc4822SAlexei Starovoitov * @to: new value of header field 18691bc4822SAlexei Starovoitov * @flags: bits 0-3 - size of header field 18791bc4822SAlexei Starovoitov * bit 4 - is pseudo header 18891bc4822SAlexei Starovoitov * other bits - reserved 18991bc4822SAlexei Starovoitov * Return: 0 on success 19091bc4822SAlexei Starovoitov */ 19191bc4822SAlexei Starovoitov BPF_FUNC_l4_csum_replace, 19204fd61abSAlexei Starovoitov 19304fd61abSAlexei Starovoitov /** 19404fd61abSAlexei Starovoitov * bpf_tail_call(ctx, prog_array_map, index) - jump into another BPF program 19504fd61abSAlexei Starovoitov * @ctx: context pointer passed to next program 19604fd61abSAlexei Starovoitov * @prog_array_map: pointer to map which type is BPF_MAP_TYPE_PROG_ARRAY 19704fd61abSAlexei Starovoitov * @index: index inside array that selects specific program to run 19804fd61abSAlexei Starovoitov * Return: 0 on success 19904fd61abSAlexei Starovoitov */ 20004fd61abSAlexei Starovoitov BPF_FUNC_tail_call, 2013896d655SAlexei Starovoitov 2023896d655SAlexei Starovoitov /** 2033896d655SAlexei Starovoitov * bpf_clone_redirect(skb, ifindex, flags) - redirect to another netdev 2043896d655SAlexei Starovoitov * @skb: pointer to skb 2053896d655SAlexei Starovoitov * @ifindex: ifindex of the net device 2063896d655SAlexei Starovoitov * @flags: bit 0 - if set, redirect to ingress instead of egress 2073896d655SAlexei Starovoitov * other bits - reserved 2083896d655SAlexei Starovoitov * Return: 0 on success 2093896d655SAlexei Starovoitov */ 2103896d655SAlexei Starovoitov BPF_FUNC_clone_redirect, 211ffeedafbSAlexei Starovoitov 212ffeedafbSAlexei Starovoitov /** 213ffeedafbSAlexei Starovoitov * u64 bpf_get_current_pid_tgid(void) 214ffeedafbSAlexei Starovoitov * Return: current->tgid << 32 | current->pid 215ffeedafbSAlexei Starovoitov */ 216ffeedafbSAlexei Starovoitov BPF_FUNC_get_current_pid_tgid, 217ffeedafbSAlexei Starovoitov 218ffeedafbSAlexei Starovoitov /** 219ffeedafbSAlexei Starovoitov * u64 bpf_get_current_uid_gid(void) 220ffeedafbSAlexei Starovoitov * Return: current_gid << 32 | current_uid 221ffeedafbSAlexei Starovoitov */ 222ffeedafbSAlexei Starovoitov BPF_FUNC_get_current_uid_gid, 223ffeedafbSAlexei Starovoitov 224ffeedafbSAlexei Starovoitov /** 225ffeedafbSAlexei Starovoitov * bpf_get_current_comm(char *buf, int size_of_buf) 226ffeedafbSAlexei Starovoitov * stores current->comm into buf 227ffeedafbSAlexei Starovoitov * Return: 0 on success 228ffeedafbSAlexei Starovoitov */ 229ffeedafbSAlexei Starovoitov BPF_FUNC_get_current_comm, 2308d20aabeSDaniel Borkmann 2318d20aabeSDaniel Borkmann /** 2328d20aabeSDaniel Borkmann * bpf_get_cgroup_classid(skb) - retrieve a proc's classid 2338d20aabeSDaniel Borkmann * @skb: pointer to skb 2348d20aabeSDaniel Borkmann * Return: classid if != 0 2358d20aabeSDaniel Borkmann */ 2368d20aabeSDaniel Borkmann BPF_FUNC_get_cgroup_classid, 2374e10df9aSAlexei Starovoitov BPF_FUNC_skb_vlan_push, /* bpf_skb_vlan_push(skb, vlan_proto, vlan_tci) */ 2384e10df9aSAlexei Starovoitov BPF_FUNC_skb_vlan_pop, /* bpf_skb_vlan_pop(skb) */ 239d3aa45ceSAlexei Starovoitov 240d3aa45ceSAlexei Starovoitov /** 241d3aa45ceSAlexei Starovoitov * bpf_skb_[gs]et_tunnel_key(skb, key, size, flags) 242d3aa45ceSAlexei Starovoitov * retrieve or populate tunnel metadata 243d3aa45ceSAlexei Starovoitov * @skb: pointer to skb 244d3aa45ceSAlexei Starovoitov * @key: pointer to 'struct bpf_tunnel_key' 245d3aa45ceSAlexei Starovoitov * @size: size of 'struct bpf_tunnel_key' 246d3aa45ceSAlexei Starovoitov * @flags: room for future extensions 247d3aa45ceSAlexei Starovoitov * Retrun: 0 on success 248d3aa45ceSAlexei Starovoitov */ 249d3aa45ceSAlexei Starovoitov BPF_FUNC_skb_get_tunnel_key, 250d3aa45ceSAlexei Starovoitov BPF_FUNC_skb_set_tunnel_key, 25135578d79SKaixu Xia BPF_FUNC_perf_event_read, /* u64 bpf_perf_event_read(&map, index) */ 25227b29f63SAlexei Starovoitov /** 25327b29f63SAlexei Starovoitov * bpf_redirect(ifindex, flags) - redirect to another netdev 25427b29f63SAlexei Starovoitov * @ifindex: ifindex of the net device 25527b29f63SAlexei Starovoitov * @flags: bit 0 - if set, redirect to ingress instead of egress 25627b29f63SAlexei Starovoitov * other bits - reserved 25727b29f63SAlexei Starovoitov * Return: TC_ACT_REDIRECT 25827b29f63SAlexei Starovoitov */ 25927b29f63SAlexei Starovoitov BPF_FUNC_redirect, 260c46646d0SDaniel Borkmann 261c46646d0SDaniel Borkmann /** 262c46646d0SDaniel Borkmann * bpf_get_route_realm(skb) - retrieve a dst's tclassid 263c46646d0SDaniel Borkmann * @skb: pointer to skb 264c46646d0SDaniel Borkmann * Return: realm if != 0 265c46646d0SDaniel Borkmann */ 266c46646d0SDaniel Borkmann BPF_FUNC_get_route_realm, 267a43eec30SAlexei Starovoitov 268a43eec30SAlexei Starovoitov /** 269a43eec30SAlexei Starovoitov * bpf_perf_event_output(ctx, map, index, data, size) - output perf raw sample 270a43eec30SAlexei Starovoitov * @ctx: struct pt_regs* 271a43eec30SAlexei Starovoitov * @map: pointer to perf_event_array map 272a43eec30SAlexei Starovoitov * @index: index of event in the map 273a43eec30SAlexei Starovoitov * @data: data on stack to be output as raw data 274a43eec30SAlexei Starovoitov * @size: size of data 275a43eec30SAlexei Starovoitov * Return: 0 on success 276a43eec30SAlexei Starovoitov */ 277a43eec30SAlexei Starovoitov BPF_FUNC_perf_event_output, 27805c74e5eSDaniel Borkmann BPF_FUNC_skb_load_bytes, 279d5a3b1f6SAlexei Starovoitov 280d5a3b1f6SAlexei Starovoitov /** 281d5a3b1f6SAlexei Starovoitov * bpf_get_stackid(ctx, map, flags) - walk user or kernel stack and return id 282d5a3b1f6SAlexei Starovoitov * @ctx: struct pt_regs* 283d5a3b1f6SAlexei Starovoitov * @map: pointer to stack_trace map 284d5a3b1f6SAlexei Starovoitov * @flags: bits 0-7 - numer of stack frames to skip 285d5a3b1f6SAlexei Starovoitov * bit 8 - collect user stack instead of kernel 286d5a3b1f6SAlexei Starovoitov * bit 9 - compare stacks by hash only 287d5a3b1f6SAlexei Starovoitov * bit 10 - if two different stacks hash into the same stackid 288d5a3b1f6SAlexei Starovoitov * discard old 289d5a3b1f6SAlexei Starovoitov * other bits - reserved 290d5a3b1f6SAlexei Starovoitov * Return: >= 0 stackid on success or negative error 291d5a3b1f6SAlexei Starovoitov */ 292d5a3b1f6SAlexei Starovoitov BPF_FUNC_get_stackid, 2937d672345SDaniel Borkmann 2947d672345SDaniel Borkmann /** 2957d672345SDaniel Borkmann * bpf_csum_diff(from, from_size, to, to_size, seed) - calculate csum diff 2967d672345SDaniel Borkmann * @from: raw from buffer 2977d672345SDaniel Borkmann * @from_size: length of from buffer 2987d672345SDaniel Borkmann * @to: raw to buffer 2997d672345SDaniel Borkmann * @to_size: length of to buffer 3007d672345SDaniel Borkmann * @seed: optional seed 3017d672345SDaniel Borkmann * Return: csum result 3027d672345SDaniel Borkmann */ 3037d672345SDaniel Borkmann BPF_FUNC_csum_diff, 30414ca0751SDaniel Borkmann 30514ca0751SDaniel Borkmann /** 30614ca0751SDaniel Borkmann * bpf_skb_[gs]et_tunnel_opt(skb, opt, size) 30714ca0751SDaniel Borkmann * retrieve or populate tunnel options metadata 30814ca0751SDaniel Borkmann * @skb: pointer to skb 30914ca0751SDaniel Borkmann * @opt: pointer to raw tunnel option data 31014ca0751SDaniel Borkmann * @size: size of @opt 31114ca0751SDaniel Borkmann * Return: 0 on success for set, option size for get 31214ca0751SDaniel Borkmann */ 31314ca0751SDaniel Borkmann BPF_FUNC_skb_get_tunnel_opt, 31414ca0751SDaniel Borkmann BPF_FUNC_skb_set_tunnel_opt, 31509756af4SAlexei Starovoitov __BPF_FUNC_MAX_ID, 31609756af4SAlexei Starovoitov }; 31709756af4SAlexei Starovoitov 318781c53bcSDaniel Borkmann /* All flags used by eBPF helper functions, placed here. */ 319781c53bcSDaniel Borkmann 320781c53bcSDaniel Borkmann /* BPF_FUNC_skb_store_bytes flags. */ 321781c53bcSDaniel Borkmann #define BPF_F_RECOMPUTE_CSUM (1ULL << 0) 3228afd54c8SDaniel Borkmann #define BPF_F_INVALIDATE_HASH (1ULL << 1) 323781c53bcSDaniel Borkmann 324781c53bcSDaniel Borkmann /* BPF_FUNC_l3_csum_replace and BPF_FUNC_l4_csum_replace flags. 325781c53bcSDaniel Borkmann * First 4 bits are for passing the header field size. 326781c53bcSDaniel Borkmann */ 327781c53bcSDaniel Borkmann #define BPF_F_HDR_FIELD_MASK 0xfULL 328781c53bcSDaniel Borkmann 329781c53bcSDaniel Borkmann /* BPF_FUNC_l4_csum_replace flags. */ 330781c53bcSDaniel Borkmann #define BPF_F_PSEUDO_HDR (1ULL << 4) 3312f72959aSDaniel Borkmann #define BPF_F_MARK_MANGLED_0 (1ULL << 5) 332781c53bcSDaniel Borkmann 333781c53bcSDaniel Borkmann /* BPF_FUNC_clone_redirect and BPF_FUNC_redirect flags. */ 334781c53bcSDaniel Borkmann #define BPF_F_INGRESS (1ULL << 0) 335781c53bcSDaniel Borkmann 336c6c33454SDaniel Borkmann /* BPF_FUNC_skb_set_tunnel_key and BPF_FUNC_skb_get_tunnel_key flags. */ 337c6c33454SDaniel Borkmann #define BPF_F_TUNINFO_IPV6 (1ULL << 0) 338c6c33454SDaniel Borkmann 339d5a3b1f6SAlexei Starovoitov /* BPF_FUNC_get_stackid flags. */ 340d5a3b1f6SAlexei Starovoitov #define BPF_F_SKIP_FIELD_MASK 0xffULL 341d5a3b1f6SAlexei Starovoitov #define BPF_F_USER_STACK (1ULL << 8) 342d5a3b1f6SAlexei Starovoitov #define BPF_F_FAST_STACK_CMP (1ULL << 9) 343d5a3b1f6SAlexei Starovoitov #define BPF_F_REUSE_STACKID (1ULL << 10) 344d5a3b1f6SAlexei Starovoitov 3452da897e5SDaniel Borkmann /* BPF_FUNC_skb_set_tunnel_key flags. */ 3462da897e5SDaniel Borkmann #define BPF_F_ZERO_CSUM_TX (1ULL << 1) 34722080870SDaniel Borkmann #define BPF_F_DONT_FRAGMENT (1ULL << 2) 3482da897e5SDaniel Borkmann 3499bac3d6dSAlexei Starovoitov /* user accessible mirror of in-kernel sk_buff. 3509bac3d6dSAlexei Starovoitov * new fields can only be added to the end of this structure 3519bac3d6dSAlexei Starovoitov */ 3529bac3d6dSAlexei Starovoitov struct __sk_buff { 3539bac3d6dSAlexei Starovoitov __u32 len; 3549bac3d6dSAlexei Starovoitov __u32 pkt_type; 3559bac3d6dSAlexei Starovoitov __u32 mark; 3569bac3d6dSAlexei Starovoitov __u32 queue_mapping; 357c2497395SAlexei Starovoitov __u32 protocol; 358c2497395SAlexei Starovoitov __u32 vlan_present; 359c2497395SAlexei Starovoitov __u32 vlan_tci; 36027cd5452SMichal Sekletar __u32 vlan_proto; 361bcad5718SDaniel Borkmann __u32 priority; 36237e82c2fSAlexei Starovoitov __u32 ingress_ifindex; 36337e82c2fSAlexei Starovoitov __u32 ifindex; 364d691f9e8SAlexei Starovoitov __u32 tc_index; 365d691f9e8SAlexei Starovoitov __u32 cb[5]; 366ba7591d8SDaniel Borkmann __u32 hash; 367045efa82SDaniel Borkmann __u32 tc_classid; 3689bac3d6dSAlexei Starovoitov }; 3699bac3d6dSAlexei Starovoitov 370d3aa45ceSAlexei Starovoitov struct bpf_tunnel_key { 371d3aa45ceSAlexei Starovoitov __u32 tunnel_id; 372c6c33454SDaniel Borkmann union { 373d3aa45ceSAlexei Starovoitov __u32 remote_ipv4; 374c6c33454SDaniel Borkmann __u32 remote_ipv6[4]; 375c6c33454SDaniel Borkmann }; 376c6c33454SDaniel Borkmann __u8 tunnel_tos; 377c6c33454SDaniel Borkmann __u8 tunnel_ttl; 378*4018ab18SDaniel Borkmann __u32 tunnel_label; 379d3aa45ceSAlexei Starovoitov }; 380d3aa45ceSAlexei Starovoitov 381daedfb22SAlexei Starovoitov #endif /* _UAPI__LINUX_BPF_H__ */ 382