tools lib bpf: Copy bpf.h and bpf_common.h from the kernel
To allow the build to complete on older systems, where those files are
either not uptodate, lacking some recent additions or not present at
all.
And check if the copy drifts from the kernel, as in this synthetic test:
BUILD: Doing 'make -j4' parallel build
Warning: tools/include/linux/bpf.h differs from kernel
Warning: tools/include/linux/bpf_common.h differs from kernel
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-5plvi2gq4x469dcyybiu226q@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
Родитель
7d7d1bf1d1
Коммит
971e827bff
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@ -0,0 +1,389 @@
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/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*/
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#ifndef _UAPI__LINUX_BPF_H__
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#define _UAPI__LINUX_BPF_H__
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#include <linux/types.h>
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#include <linux/bpf_common.h>
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/* Extended instruction set based on top of classic BPF */
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/* instruction classes */
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#define BPF_ALU64 0x07 /* alu mode in double word width */
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/* ld/ldx fields */
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#define BPF_DW 0x18 /* double word */
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#define BPF_XADD 0xc0 /* exclusive add */
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/* alu/jmp fields */
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#define BPF_MOV 0xb0 /* mov reg to reg */
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#define BPF_ARSH 0xc0 /* sign extending arithmetic shift right */
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/* change endianness of a register */
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#define BPF_END 0xd0 /* flags for endianness conversion: */
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#define BPF_TO_LE 0x00 /* convert to little-endian */
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#define BPF_TO_BE 0x08 /* convert to big-endian */
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#define BPF_FROM_LE BPF_TO_LE
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#define BPF_FROM_BE BPF_TO_BE
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#define BPF_JNE 0x50 /* jump != */
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#define BPF_JSGT 0x60 /* SGT is signed '>', GT in x86 */
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#define BPF_JSGE 0x70 /* SGE is signed '>=', GE in x86 */
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#define BPF_CALL 0x80 /* function call */
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#define BPF_EXIT 0x90 /* function return */
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/* Register numbers */
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enum {
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BPF_REG_0 = 0,
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BPF_REG_1,
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BPF_REG_2,
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BPF_REG_3,
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BPF_REG_4,
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BPF_REG_5,
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BPF_REG_6,
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BPF_REG_7,
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BPF_REG_8,
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BPF_REG_9,
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BPF_REG_10,
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__MAX_BPF_REG,
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};
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/* BPF has 10 general purpose 64-bit registers and stack frame. */
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#define MAX_BPF_REG __MAX_BPF_REG
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struct bpf_insn {
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__u8 code; /* opcode */
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__u8 dst_reg:4; /* dest register */
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__u8 src_reg:4; /* source register */
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__s16 off; /* signed offset */
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__s32 imm; /* signed immediate constant */
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};
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/* BPF syscall commands, see bpf(2) man-page for details. */
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enum bpf_cmd {
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BPF_MAP_CREATE,
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BPF_MAP_LOOKUP_ELEM,
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BPF_MAP_UPDATE_ELEM,
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BPF_MAP_DELETE_ELEM,
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BPF_MAP_GET_NEXT_KEY,
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BPF_PROG_LOAD,
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BPF_OBJ_PIN,
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BPF_OBJ_GET,
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};
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enum bpf_map_type {
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BPF_MAP_TYPE_UNSPEC,
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BPF_MAP_TYPE_HASH,
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BPF_MAP_TYPE_ARRAY,
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BPF_MAP_TYPE_PROG_ARRAY,
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BPF_MAP_TYPE_PERF_EVENT_ARRAY,
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BPF_MAP_TYPE_PERCPU_HASH,
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BPF_MAP_TYPE_PERCPU_ARRAY,
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BPF_MAP_TYPE_STACK_TRACE,
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};
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enum bpf_prog_type {
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BPF_PROG_TYPE_UNSPEC,
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BPF_PROG_TYPE_SOCKET_FILTER,
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BPF_PROG_TYPE_KPROBE,
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BPF_PROG_TYPE_SCHED_CLS,
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BPF_PROG_TYPE_SCHED_ACT,
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BPF_PROG_TYPE_TRACEPOINT,
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};
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#define BPF_PSEUDO_MAP_FD 1
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/* flags for BPF_MAP_UPDATE_ELEM command */
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#define BPF_ANY 0 /* create new element or update existing */
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#define BPF_NOEXIST 1 /* create new element if it didn't exist */
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#define BPF_EXIST 2 /* update existing element */
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#define BPF_F_NO_PREALLOC (1U << 0)
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union bpf_attr {
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struct { /* anonymous struct used by BPF_MAP_CREATE command */
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__u32 map_type; /* one of enum bpf_map_type */
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__u32 key_size; /* size of key in bytes */
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__u32 value_size; /* size of value in bytes */
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__u32 max_entries; /* max number of entries in a map */
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__u32 map_flags; /* prealloc or not */
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};
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struct { /* anonymous struct used by BPF_MAP_*_ELEM commands */
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__u32 map_fd;
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__aligned_u64 key;
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union {
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__aligned_u64 value;
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__aligned_u64 next_key;
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};
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__u64 flags;
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};
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struct { /* anonymous struct used by BPF_PROG_LOAD command */
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__u32 prog_type; /* one of enum bpf_prog_type */
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__u32 insn_cnt;
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__aligned_u64 insns;
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__aligned_u64 license;
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__u32 log_level; /* verbosity level of verifier */
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__u32 log_size; /* size of user buffer */
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__aligned_u64 log_buf; /* user supplied buffer */
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__u32 kern_version; /* checked when prog_type=kprobe */
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};
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struct { /* anonymous struct used by BPF_OBJ_* commands */
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__aligned_u64 pathname;
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__u32 bpf_fd;
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};
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} __attribute__((aligned(8)));
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/* integer value in 'imm' field of BPF_CALL instruction selects which helper
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* function eBPF program intends to call
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*/
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enum bpf_func_id {
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BPF_FUNC_unspec,
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BPF_FUNC_map_lookup_elem, /* void *map_lookup_elem(&map, &key) */
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BPF_FUNC_map_update_elem, /* int map_update_elem(&map, &key, &value, flags) */
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BPF_FUNC_map_delete_elem, /* int map_delete_elem(&map, &key) */
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BPF_FUNC_probe_read, /* int bpf_probe_read(void *dst, int size, void *src) */
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BPF_FUNC_ktime_get_ns, /* u64 bpf_ktime_get_ns(void) */
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BPF_FUNC_trace_printk, /* int bpf_trace_printk(const char *fmt, int fmt_size, ...) */
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BPF_FUNC_get_prandom_u32, /* u32 prandom_u32(void) */
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BPF_FUNC_get_smp_processor_id, /* u32 raw_smp_processor_id(void) */
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/**
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* skb_store_bytes(skb, offset, from, len, flags) - store bytes into packet
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* @skb: pointer to skb
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* @offset: offset within packet from skb->mac_header
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* @from: pointer where to copy bytes from
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* @len: number of bytes to store into packet
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* @flags: bit 0 - if true, recompute skb->csum
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* other bits - reserved
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* Return: 0 on success
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*/
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BPF_FUNC_skb_store_bytes,
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/**
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* l3_csum_replace(skb, offset, from, to, flags) - recompute IP checksum
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* @skb: pointer to skb
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* @offset: offset within packet where IP checksum is located
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* @from: old value of header field
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* @to: new value of header field
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* @flags: bits 0-3 - size of header field
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* other bits - reserved
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* Return: 0 on success
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*/
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BPF_FUNC_l3_csum_replace,
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/**
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* l4_csum_replace(skb, offset, from, to, flags) - recompute TCP/UDP checksum
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* @skb: pointer to skb
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* @offset: offset within packet where TCP/UDP checksum is located
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* @from: old value of header field
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* @to: new value of header field
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* @flags: bits 0-3 - size of header field
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* bit 4 - is pseudo header
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* other bits - reserved
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* Return: 0 on success
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*/
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BPF_FUNC_l4_csum_replace,
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/**
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* bpf_tail_call(ctx, prog_array_map, index) - jump into another BPF program
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* @ctx: context pointer passed to next program
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* @prog_array_map: pointer to map which type is BPF_MAP_TYPE_PROG_ARRAY
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* @index: index inside array that selects specific program to run
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* Return: 0 on success
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*/
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BPF_FUNC_tail_call,
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/**
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* bpf_clone_redirect(skb, ifindex, flags) - redirect to another netdev
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* @skb: pointer to skb
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* @ifindex: ifindex of the net device
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* @flags: bit 0 - if set, redirect to ingress instead of egress
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* other bits - reserved
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* Return: 0 on success
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*/
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BPF_FUNC_clone_redirect,
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/**
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* u64 bpf_get_current_pid_tgid(void)
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* Return: current->tgid << 32 | current->pid
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*/
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BPF_FUNC_get_current_pid_tgid,
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/**
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* u64 bpf_get_current_uid_gid(void)
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* Return: current_gid << 32 | current_uid
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*/
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BPF_FUNC_get_current_uid_gid,
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/**
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* bpf_get_current_comm(char *buf, int size_of_buf)
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* stores current->comm into buf
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* Return: 0 on success
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*/
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BPF_FUNC_get_current_comm,
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/**
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* bpf_get_cgroup_classid(skb) - retrieve a proc's classid
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* @skb: pointer to skb
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* Return: classid if != 0
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*/
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BPF_FUNC_get_cgroup_classid,
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BPF_FUNC_skb_vlan_push, /* bpf_skb_vlan_push(skb, vlan_proto, vlan_tci) */
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BPF_FUNC_skb_vlan_pop, /* bpf_skb_vlan_pop(skb) */
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/**
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* bpf_skb_[gs]et_tunnel_key(skb, key, size, flags)
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* retrieve or populate tunnel metadata
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* @skb: pointer to skb
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* @key: pointer to 'struct bpf_tunnel_key'
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* @size: size of 'struct bpf_tunnel_key'
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* @flags: room for future extensions
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* Retrun: 0 on success
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*/
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BPF_FUNC_skb_get_tunnel_key,
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BPF_FUNC_skb_set_tunnel_key,
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BPF_FUNC_perf_event_read, /* u64 bpf_perf_event_read(&map, index) */
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/**
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* bpf_redirect(ifindex, flags) - redirect to another netdev
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* @ifindex: ifindex of the net device
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* @flags: bit 0 - if set, redirect to ingress instead of egress
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* other bits - reserved
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* Return: TC_ACT_REDIRECT
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*/
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BPF_FUNC_redirect,
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/**
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* bpf_get_route_realm(skb) - retrieve a dst's tclassid
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* @skb: pointer to skb
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* Return: realm if != 0
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*/
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BPF_FUNC_get_route_realm,
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/**
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* bpf_perf_event_output(ctx, map, index, data, size) - output perf raw sample
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* @ctx: struct pt_regs*
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* @map: pointer to perf_event_array map
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* @index: index of event in the map
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* @data: data on stack to be output as raw data
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* @size: size of data
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* Return: 0 on success
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*/
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BPF_FUNC_perf_event_output,
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BPF_FUNC_skb_load_bytes,
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/**
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* bpf_get_stackid(ctx, map, flags) - walk user or kernel stack and return id
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* @ctx: struct pt_regs*
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* @map: pointer to stack_trace map
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* @flags: bits 0-7 - numer of stack frames to skip
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* bit 8 - collect user stack instead of kernel
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* bit 9 - compare stacks by hash only
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* bit 10 - if two different stacks hash into the same stackid
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* discard old
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* other bits - reserved
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* Return: >= 0 stackid on success or negative error
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*/
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BPF_FUNC_get_stackid,
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/**
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* bpf_csum_diff(from, from_size, to, to_size, seed) - calculate csum diff
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* @from: raw from buffer
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* @from_size: length of from buffer
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* @to: raw to buffer
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* @to_size: length of to buffer
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* @seed: optional seed
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* Return: csum result
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*/
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BPF_FUNC_csum_diff,
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/**
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* bpf_skb_[gs]et_tunnel_opt(skb, opt, size)
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* retrieve or populate tunnel options metadata
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* @skb: pointer to skb
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* @opt: pointer to raw tunnel option data
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* @size: size of @opt
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* Return: 0 on success for set, option size for get
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*/
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BPF_FUNC_skb_get_tunnel_opt,
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BPF_FUNC_skb_set_tunnel_opt,
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__BPF_FUNC_MAX_ID,
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};
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/* All flags used by eBPF helper functions, placed here. */
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/* BPF_FUNC_skb_store_bytes flags. */
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#define BPF_F_RECOMPUTE_CSUM (1ULL << 0)
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#define BPF_F_INVALIDATE_HASH (1ULL << 1)
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/* BPF_FUNC_l3_csum_replace and BPF_FUNC_l4_csum_replace flags.
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* First 4 bits are for passing the header field size.
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*/
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#define BPF_F_HDR_FIELD_MASK 0xfULL
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/* BPF_FUNC_l4_csum_replace flags. */
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#define BPF_F_PSEUDO_HDR (1ULL << 4)
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#define BPF_F_MARK_MANGLED_0 (1ULL << 5)
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/* BPF_FUNC_clone_redirect and BPF_FUNC_redirect flags. */
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#define BPF_F_INGRESS (1ULL << 0)
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/* BPF_FUNC_skb_set_tunnel_key and BPF_FUNC_skb_get_tunnel_key flags. */
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#define BPF_F_TUNINFO_IPV6 (1ULL << 0)
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/* BPF_FUNC_get_stackid flags. */
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#define BPF_F_SKIP_FIELD_MASK 0xffULL
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#define BPF_F_USER_STACK (1ULL << 8)
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#define BPF_F_FAST_STACK_CMP (1ULL << 9)
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#define BPF_F_REUSE_STACKID (1ULL << 10)
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/* BPF_FUNC_skb_set_tunnel_key flags. */
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#define BPF_F_ZERO_CSUM_TX (1ULL << 1)
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#define BPF_F_DONT_FRAGMENT (1ULL << 2)
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/* BPF_FUNC_perf_event_output flags. */
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#define BPF_F_INDEX_MASK 0xffffffffULL
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#define BPF_F_CURRENT_CPU BPF_F_INDEX_MASK
|
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/* user accessible mirror of in-kernel sk_buff.
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* new fields can only be added to the end of this structure
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*/
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struct __sk_buff {
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__u32 len;
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__u32 pkt_type;
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__u32 mark;
|
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__u32 queue_mapping;
|
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__u32 protocol;
|
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__u32 vlan_present;
|
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__u32 vlan_tci;
|
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__u32 vlan_proto;
|
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__u32 priority;
|
||||
__u32 ingress_ifindex;
|
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__u32 ifindex;
|
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__u32 tc_index;
|
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__u32 cb[5];
|
||||
__u32 hash;
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||||
__u32 tc_classid;
|
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__u32 data;
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__u32 data_end;
|
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};
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struct bpf_tunnel_key {
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||||
__u32 tunnel_id;
|
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union {
|
||||
__u32 remote_ipv4;
|
||||
__u32 remote_ipv6[4];
|
||||
};
|
||||
__u8 tunnel_tos;
|
||||
__u8 tunnel_ttl;
|
||||
__u16 tunnel_ext;
|
||||
__u32 tunnel_label;
|
||||
};
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||||
|
||||
#endif /* _UAPI__LINUX_BPF_H__ */
|
||||
|
|
@ -0,0 +1,55 @@
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#ifndef _UAPI__LINUX_BPF_COMMON_H__
|
||||
#define _UAPI__LINUX_BPF_COMMON_H__
|
||||
|
||||
/* Instruction classes */
|
||||
#define BPF_CLASS(code) ((code) & 0x07)
|
||||
#define BPF_LD 0x00
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||||
#define BPF_LDX 0x01
|
||||
#define BPF_ST 0x02
|
||||
#define BPF_STX 0x03
|
||||
#define BPF_ALU 0x04
|
||||
#define BPF_JMP 0x05
|
||||
#define BPF_RET 0x06
|
||||
#define BPF_MISC 0x07
|
||||
|
||||
/* ld/ldx fields */
|
||||
#define BPF_SIZE(code) ((code) & 0x18)
|
||||
#define BPF_W 0x00
|
||||
#define BPF_H 0x08
|
||||
#define BPF_B 0x10
|
||||
#define BPF_MODE(code) ((code) & 0xe0)
|
||||
#define BPF_IMM 0x00
|
||||
#define BPF_ABS 0x20
|
||||
#define BPF_IND 0x40
|
||||
#define BPF_MEM 0x60
|
||||
#define BPF_LEN 0x80
|
||||
#define BPF_MSH 0xa0
|
||||
|
||||
/* alu/jmp fields */
|
||||
#define BPF_OP(code) ((code) & 0xf0)
|
||||
#define BPF_ADD 0x00
|
||||
#define BPF_SUB 0x10
|
||||
#define BPF_MUL 0x20
|
||||
#define BPF_DIV 0x30
|
||||
#define BPF_OR 0x40
|
||||
#define BPF_AND 0x50
|
||||
#define BPF_LSH 0x60
|
||||
#define BPF_RSH 0x70
|
||||
#define BPF_NEG 0x80
|
||||
#define BPF_MOD 0x90
|
||||
#define BPF_XOR 0xa0
|
||||
|
||||
#define BPF_JA 0x00
|
||||
#define BPF_JEQ 0x10
|
||||
#define BPF_JGT 0x20
|
||||
#define BPF_JGE 0x30
|
||||
#define BPF_JSET 0x40
|
||||
#define BPF_SRC(code) ((code) & 0x08)
|
||||
#define BPF_K 0x00
|
||||
#define BPF_X 0x08
|
||||
|
||||
#ifndef BPF_MAXINSNS
|
||||
#define BPF_MAXINSNS 4096
|
||||
#endif
|
||||
|
||||
#endif /* _UAPI__LINUX_BPF_COMMON_H__ */
|
||||
|
|
@ -68,7 +68,7 @@ FEATURE_USER = .libbpf
|
|||
FEATURE_TESTS = libelf libelf-getphdrnum libelf-mmap bpf
|
||||
FEATURE_DISPLAY = libelf bpf
|
||||
|
||||
INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/arch/$(ARCH)/include/uapi -I$(srctree)/include/uapi
|
||||
INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(ARCH)/include/uapi -I$(srctree)/tools/include/uapi
|
||||
FEATURE_CHECK_CFLAGS-bpf = $(INCLUDES)
|
||||
|
||||
check_feat := 1
|
||||
|
|
@ -154,6 +154,12 @@ all: fixdep $(VERSION_FILES) all_cmd
|
|||
all_cmd: $(CMD_TARGETS)
|
||||
|
||||
$(BPF_IN): force elfdep bpfdep
|
||||
@(test -f ../../../include/uapi/linux/bpf.h -a -f ../../../include/uapi/linux/bpf.h && ( \
|
||||
(diff -B ../../include/uapi/linux/bpf.h ../../../include/uapi/linux/bpf.h >/dev/null) || \
|
||||
echo "Warning: tools/include/uapi/linux/bpf.h differs from kernel" >&2 )) || true
|
||||
@(test -f ../../../include/uapi/linux/bpf_common.h -a -f ../../../include/uapi/linux/bpf_common.h && ( \
|
||||
(diff -B ../../include/uapi/linux/bpf_common.h ../../../include/uapi/linux/bpf_common.h >/dev/null) || \
|
||||
echo "Warning: tools/include/uapi/linux/bpf_common.h differs from kernel" >&2 )) || true
|
||||
$(Q)$(MAKE) $(build)=libbpf
|
||||
|
||||
$(OUTPUT)libbpf.so: $(BPF_IN)
|
||||
|
|
|
|||
|
|
@ -23,7 +23,6 @@ tools/build
|
|||
tools/arch/x86/include/asm/atomic.h
|
||||
tools/arch/x86/include/asm/rmwcc.h
|
||||
tools/lib/traceevent
|
||||
tools/lib/bpf
|
||||
tools/lib/api
|
||||
tools/lib/bpf
|
||||
tools/lib/subcmd
|
||||
|
|
@ -60,6 +59,8 @@ tools/include/linux/hash.h
|
|||
tools/include/linux/kernel.h
|
||||
tools/include/linux/list.h
|
||||
tools/include/linux/log2.h
|
||||
tools/include/uapi/linux/bpf.h
|
||||
tools/include/uapi/linux/bpf_common.h
|
||||
tools/include/uapi/linux/perf_event.h
|
||||
tools/include/linux/poison.h
|
||||
tools/include/linux/rbtree.h
|
||||
|
|
@ -82,8 +83,6 @@ arch/*/include/uapi/asm/unistd*.h
|
|||
arch/*/include/uapi/asm/perf_regs.h
|
||||
include/linux/poison.h
|
||||
include/linux/hw_breakpoint.h
|
||||
include/uapi/linux/bpf.h
|
||||
include/uapi/linux/bpf_common.h
|
||||
include/uapi/linux/const.h
|
||||
include/uapi/linux/swab.h
|
||||
include/uapi/linux/hw_breakpoint.h
|
||||
|
|
|
|||
|
|
@ -115,7 +115,7 @@ endif
|
|||
FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
|
||||
FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) -lbabeltrace-ctf
|
||||
|
||||
FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/arch/$(ARCH)/include/uapi -I$(srctree)/include/uapi
|
||||
FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(ARCH)/include/uapi -I$(srctree)/tools/include/uapi
|
||||
# include ARCH specific config
|
||||
-include $(src-perf)/arch/$(ARCH)/Makefile
|
||||
|
||||
|
|
@ -210,7 +210,8 @@ CFLAGS += -I$(srctree)/tools/include/uapi
|
|||
CFLAGS += -I$(srctree)/tools/include/
|
||||
CFLAGS += -I$(srctree)/arch/$(ARCH)/include/uapi
|
||||
CFLAGS += -I$(srctree)/arch/$(ARCH)/include
|
||||
CFLAGS += -I$(srctree)/tools/arch/$(ARCH)/include
|
||||
CFLAGS += -I$(srctree)/tools/arch/$(ARCH)/include/uapi
|
||||
CFLAGS += -I$(srctree)/tools/arch/$(ARCH)/
|
||||
CFLAGS += -I$(srctree)/include/uapi
|
||||
CFLAGS += -I$(srctree)/include
|
||||
|
||||
|
|
|
|||
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Ссылка в новой задаче