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/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. */ #ifndef __LINUX_BPF_H__ #define __LINUX_BPF_H__ #include <linux/types.h> #include <linux/bpf_common.h> /* Extended instruction set based on top of classic BPF */ /* instruction classes */ #define BPF_ALU64 0x07 /* alu mode in double word width */ /* ld/ldx fields */ #define BPF_DW 0x18 /* double word */ #define BPF_XADD 0xc0 /* exclusive add */ /* alu/jmp fields */ #define BPF_MOV 0xb0 /* mov reg to reg */ #define BPF_ARSH 0xc0 /* sign extending arithmetic shift right */ /* change endianness of a register */ #define BPF_END 0xd0 /* flags for endianness conversion: */ #define BPF_TO_LE 0x00 /* convert to little-endian */ #define BPF_TO_BE 0x08 /* convert to big-endian */ #define BPF_FROM_LE BPF_TO_LE #define BPF_FROM_BE BPF_TO_BE /* jmp encodings */ #define BPF_JNE 0x50 /* jump != */ #define BPF_JLT 0xa0 /* LT is unsigned, '<' */ #define BPF_JLE 0xb0 /* LE is unsigned, '<=' */ #define BPF_JSGT 0x60 /* SGT is signed '>', GT in x86 */ #define BPF_JSGE 0x70 /* SGE is signed '>=', GE in x86 */ #define BPF_JSLT 0xc0 /* SLT is signed, '<' */ #define BPF_JSLE 0xd0 /* SLE is signed, '<=' */ #define BPF_CALL 0x80 /* function call */ #define BPF_EXIT 0x90 /* function return */ /* Register numbers */ enum { BPF_REG_0 = 0, BPF_REG_1, BPF_REG_2, BPF_REG_3, BPF_REG_4, BPF_REG_5, BPF_REG_6, BPF_REG_7, BPF_REG_8, BPF_REG_9, BPF_REG_10, __MAX_BPF_REG, }; /* BPF has 10 general purpose 64-bit registers and stack frame. */ #define MAX_BPF_REG __MAX_BPF_REG struct bpf_insn { __u8 code; /* opcode */ __u8 dst_reg:4; /* dest register */ __u8 src_reg:4; /* source register */ __s16 off; /* signed offset */ __s32 imm; /* signed immediate constant */ }; /* Key of an a BPF_MAP_TYPE_LPM_TRIE entry */ struct bpf_lpm_trie_key { __u32 prefixlen; /* up to 32 for AF_INET, 128 for AF_INET6 */ __u8 data[0]; /* Arbitrary size */ }; /* BPF syscall commands, see bpf(2) man-page for details. */ enum bpf_cmd { BPF_MAP_CREATE, BPF_MAP_LOOKUP_ELEM, BPF_MAP_UPDATE_ELEM, BPF_MAP_DELETE_ELEM, BPF_MAP_GET_NEXT_KEY, BPF_PROG_LOAD, BPF_OBJ_PIN, BPF_OBJ_GET, BPF_PROG_ATTACH, BPF_PROG_DETACH, BPF_PROG_TEST_RUN, BPF_PROG_GET_NEXT_ID, BPF_MAP_GET_NEXT_ID, BPF_PROG_GET_FD_BY_ID, BPF_MAP_GET_FD_BY_ID, BPF_OBJ_GET_INFO_BY_FD, BPF_PROG_QUERY, }; enum bpf_map_type { BPF_MAP_TYPE_UNSPEC, BPF_MAP_TYPE_HASH, BPF_MAP_TYPE_ARRAY, BPF_MAP_TYPE_PROG_ARRAY, BPF_MAP_TYPE_PERF_EVENT_ARRAY, BPF_MAP_TYPE_PERCPU_HASH, BPF_MAP_TYPE_PERCPU_ARRAY, BPF_MAP_TYPE_STACK_TRACE, BPF_MAP_TYPE_CGROUP_ARRAY, BPF_MAP_TYPE_LRU_HASH, BPF_MAP_TYPE_LRU_PERCPU_HASH, BPF_MAP_TYPE_LPM_TRIE, BPF_MAP_TYPE_ARRAY_OF_MAPS, BPF_MAP_TYPE_HASH_OF_MAPS, BPF_MAP_TYPE_DEVMAP, }; enum bpf_prog_type { BPF_PROG_TYPE_UNSPEC, BPF_PROG_TYPE_SOCKET_FILTER, BPF_PROG_TYPE_KPROBE, BPF_PROG_TYPE_SCHED_CLS, BPF_PROG_TYPE_SCHED_ACT, BPF_PROG_TYPE_TRACEPOINT, BPF_PROG_TYPE_XDP, BPF_PROG_TYPE_PERF_EVENT, BPF_PROG_TYPE_CGROUP_SKB, BPF_PROG_TYPE_CGROUP_SOCK, BPF_PROG_TYPE_LWT_IN, BPF_PROG_TYPE_LWT_OUT, BPF_PROG_TYPE_LWT_XMIT, BPF_PROG_TYPE_SOCK_OPS, }; enum bpf_attach_type { BPF_CGROUP_INET_INGRESS, BPF_CGROUP_INET_EGRESS, BPF_CGROUP_INET_SOCK_CREATE, BPF_CGROUP_SOCK_OPS, __MAX_BPF_ATTACH_TYPE }; #define MAX_BPF_ATTACH_TYPE __MAX_BPF_ATTACH_TYPE /* cgroup-bpf attach flags used in BPF_PROG_ATTACH command * * NONE(default): No further bpf programs allowed in the subtree. * * BPF_F_ALLOW_OVERRIDE: If a sub-cgroup installs some bpf program, * the program in this cgroup yields to sub-cgroup program. * * BPF_F_ALLOW_MULTI: If a sub-cgroup installs some bpf program, * that cgroup program gets run in addition to the program in this cgroup. * * Only one program is allowed to be attached to a cgroup with * NONE or BPF_F_ALLOW_OVERRIDE flag. * Attaching another program on top of NONE or BPF_F_ALLOW_OVERRIDE will * release old program and attach the new one. Attach flags has to match. * * Multiple programs are allowed to be attached to a cgroup with * BPF_F_ALLOW_MULTI flag. They are executed in FIFO order * (those that were attached first, run first) * The programs of sub-cgroup are executed first, then programs of * this cgroup and then programs of parent cgroup. * When children program makes decision (like picking TCP CA or sock bind) * parent program has a chance to override it. * * A cgroup with MULTI or OVERRIDE flag allows any attach flags in sub-cgroups. * A cgroup with NONE doesn't allow any programs in sub-cgroups. * Ex1: * cgrp1 (MULTI progs A, B) -> * cgrp2 (OVERRIDE prog C) -> * cgrp3 (MULTI prog D) -> * cgrp4 (OVERRIDE prog E) -> * cgrp5 (NONE prog F) * the event in cgrp5 triggers execution of F,D,A,B in that order. * if prog F is detached, the execution is E,D,A,B * if prog F and D are detached, the execution is E,A,B * if prog F, E and D are detached, the execution is C,A,B * * All eligible programs are executed regardless of return code from * earlier programs. */ #define BPF_F_ALLOW_OVERRIDE (1U << 0) #define BPF_F_ALLOW_MULTI (1U << 1) /* If BPF_F_STRICT_ALIGNMENT is used in BPF_PROG_LOAD command, the * verifier will perform strict alignment checking as if the kernel * has been built with CONFIG_EFFICIENT_UNALIGNED_ACCESS not set, * and NET_IP_ALIGN defined to 2. */ #define BPF_F_STRICT_ALIGNMENT (1U << 0) /* when bpf_ldimm64->src_reg == BPF_PSEUDO_MAP_FD, bpf_ldimm64->imm == fd */ #define BPF_PSEUDO_MAP_FD 1 /* when bpf_call->src_reg == BPF_PSEUDO_CALL, bpf_call->imm == pc-relative * offset to another bpf function */ #define BPF_PSEUDO_CALL 1 /* flags for BPF_MAP_UPDATE_ELEM command */ #define BPF_ANY 0 /* create new element or update existing */ #define BPF_NOEXIST 1 /* create new element if it didn't exist */ #define BPF_EXIST 2 /* update existing element */ /* flags for BPF_MAP_CREATE command */ #define BPF_F_NO_PREALLOC (1U << 0) /* Instead of having one common LRU list in the * BPF_MAP_TYPE_LRU_[PERCPU_]HASH map, use a percpu LRU list * which can scale and perform better. * Note, the LRU nodes (including free nodes) cannot be moved * across different LRU lists. */ #define BPF_F_NO_COMMON_LRU (1U << 1) /* Specify numa node during map creation */ #define BPF_F_NUMA_NODE (1U << 2) /* flags for BPF_PROG_QUERY */ #define BPF_F_QUERY_EFFECTIVE (1U << 0) #define BPF_OBJ_NAME_LEN 16U /* Flags for accessing BPF object */ #define BPF_F_RDONLY (1U << 3) #define BPF_F_WRONLY (1U << 4) /* Flag for stack_map, store build_id+offset instead of pointer */ #define BPF_F_STACK_BUILD_ID (1U << 5) enum bpf_stack_build_id_status { /* user space need an empty entry to identify end of a trace */ BPF_STACK_BUILD_ID_EMPTY = 0, /* with valid build_id and offset */ BPF_STACK_BUILD_ID_VALID = 1, /* couldn't get build_id, fallback to ip */ BPF_STACK_BUILD_ID_IP = 2, }; #define BPF_BUILD_ID_SIZE 20 struct bpf_stack_build_id { __s32 status; unsigned char build_id[BPF_BUILD_ID_SIZE]; union { __u64 offset; __u64 ip; }; }; union bpf_attr { struct { /* anonymous struct used by BPF_MAP_CREATE command */ __u32 map_type; /* one of enum bpf_map_type */ __u32 key_size; /* size of key in bytes */ __u32 value_size; /* size of value in bytes */ __u32 max_entries; /* max number of entries in a map */ __u32 map_flags; /* BPF_MAP_CREATE related * flags defined above. */ __u32 inner_map_fd; /* fd pointing to the inner map */ __u32 numa_node; /* numa node (effective only if * BPF_F_NUMA_NODE is set). */ char map_name[BPF_OBJ_NAME_LEN]; }; struct { /* anonymous struct used by BPF_MAP_*_ELEM commands */ __u32 map_fd; __aligned_u64 key; union { __aligned_u64 value; __aligned_u64 next_key; }; __u64 flags; }; struct { /* anonymous struct used by BPF_PROG_LOAD command */ __u32 prog_type; /* one of enum bpf_prog_type */ __u32 insn_cnt; __aligned_u64 insns; __aligned_u64 license; __u32 log_level; /* verbosity level of verifier */ __u32 log_size; /* size of user buffer */ __aligned_u64 log_buf; /* user supplied buffer */ __u32 kern_version; /* checked when prog_type=kprobe */ __u32 prog_flags; char prog_name[BPF_OBJ_NAME_LEN]; __u32 prog_ifindex; /* ifindex of netdev to prep for */ /* For some prog types expected attach type must be known at * load time to verify attach type specific parts of prog * (context accesses, allowed helpers, etc). */ __u32 expected_attach_type; }; struct { /* anonymous struct used by BPF_OBJ_* commands */ __aligned_u64 pathname; __u32 bpf_fd; __u32 file_flags; }; struct { /* anonymous struct used by BPF_PROG_ATTACH/DETACH commands */ __u32 target_fd; /* container object to attach to */ __u32 attach_bpf_fd; /* eBPF program to attach */ __u32 attach_type; __u32 attach_flags; }; struct { /* anonymous struct used by BPF_PROG_TEST_RUN command */ __u32 prog_fd; __u32 retval; __u32 data_size_in; __u32 data_size_out; __aligned_u64 data_in; __aligned_u64 data_out; __u32 repeat; __u32 duration; } test; struct { /* anonymous struct used by BPF_*_GET_*_ID */ union { __u32 start_id; __u32 prog_id; __u32 map_id; }; __u32 next_id; __u32 open_flags; }; struct { /* anonymous struct used by BPF_OBJ_GET_INFO_BY_FD */ __u32 bpf_fd; __u32 info_len; __aligned_u64 info; } info; struct { /* anonymous struct used by BPF_PROG_QUERY command */ __u32 target_fd; /* container object to query */ __u32 attach_type; __u32 query_flags; __u32 attach_flags; __aligned_u64 prog_ids; __u32 prog_cnt; } query; } __attribute__((aligned(8))); /* User return codes for XDP prog type. * A valid XDP program must return one of these defined values. All other * return codes are reserved for future use. Unknown return codes will result * in packet drop. */ enum xdp_action { XDP_ABORTED = 0, XDP_DROP, XDP_PASS, XDP_TX, XDP_REDIRECT, }; /* user accessible metadata for XDP packet hook * new fields must be added to the end of this structure */ struct xdp_md { __u32 data; __u32 data_end; }; #define XDP_PACKET_HEADROOM 256 /* BPF helper function descriptions: * * void *bpf_map_lookup_elem(&map, &key) * Return: Map value or NULL * * int bpf_map_update_elem(&map, &key, &value, flags) * Return: 0 on success or negative error * * int bpf_map_delete_elem(&map, &key) * Return: 0 on success or negative error * * int bpf_probe_read(void *dst, int size, void *src) * Return: 0 on success or negative error * * u64 bpf_ktime_get_ns(void) * Return: current ktime * * int bpf_trace_printk(const char *fmt, int fmt_size, ...) * Return: length of buffer written or negative error * * u32 bpf_prandom_u32(void) * Return: random value * * u32 bpf_raw_smp_processor_id(void) * Return: SMP processor ID * * int bpf_skb_store_bytes(skb, offset, from, len, flags) * store bytes into packet * @skb: pointer to skb * @offset: offset within packet from skb->mac_header * @from: pointer where to copy bytes from * @len: number of bytes to store into packet * @flags: bit 0 - if true, recompute skb->csum * other bits - reserved * Return: 0 on success or negative error * * int bpf_l3_csum_replace(skb, offset, from, to, flags) * recompute IP checksum * @skb: pointer to skb * @offset: offset within packet where IP checksum is located * @from: old value of header field * @to: new value of header field * @flags: bits 0-3 - size of header field * other bits - reserved * Return: 0 on success or negative error * * int bpf_l4_csum_replace(skb, offset, from, to, flags) * recompute TCP/UDP checksum * @skb: pointer to skb * @offset: offset within packet where TCP/UDP checksum is located * @from: old value of header field * @to: new value of header field * @flags: bits 0-3 - size of header field * bit 4 - is pseudo header * other bits - reserved * Return: 0 on success or negative error * * int bpf_tail_call(ctx, prog_array_map, index) * jump into another BPF program * @ctx: context pointer passed to next program * @prog_array_map: pointer to map which type is BPF_MAP_TYPE_PROG_ARRAY * @index: 32-bit index inside array that selects specific program to run * Return: 0 on success or negative error * * int bpf_clone_redirect(skb, ifindex, flags) * redirect to another netdev * @skb: pointer to skb * @ifindex: ifindex of the net device * @flags: bit 0 - if set, redirect to ingress instead of egress * other bits - reserved * Return: 0 on success or negative error * * u64 bpf_get_current_pid_tgid(void) * Return: current->tgid << 32 | current->pid * * u64 bpf_get_current_uid_gid(void) * Return: current_gid << 32 | current_uid * * int bpf_get_current_comm(char *buf, int size_of_buf) * stores current->comm into buf * Return: 0 on success or negative error * * u32 bpf_get_cgroup_classid(skb) * retrieve a proc's classid * @skb: pointer to skb * Return: classid if != 0 * * int bpf_skb_vlan_push(skb, vlan_proto, vlan_tci) * Return: 0 on success or negative error * * int bpf_skb_vlan_pop(skb) * Return: 0 on success or negative error * * int bpf_skb_get_tunnel_key(skb, key, size, flags) * int bpf_skb_set_tunnel_key(skb, key, size, flags) * retrieve or populate tunnel metadata * @skb: pointer to skb * @key: pointer to 'struct bpf_tunnel_key' * @size: size of 'struct bpf_tunnel_key' * @flags: room for future extensions * Return: 0 on success or negative error * * u64 bpf_perf_event_read(map, flags) * read perf event counter value * @map: pointer to perf_event_array map * @flags: index of event in the map or bitmask flags * Return: value of perf event counter read or error code * * int bpf_redirect(ifindex, flags) * redirect to another netdev * @ifindex: ifindex of the net device * @flags: bit 0 - if set, redirect to ingress instead of egress * other bits - reserved * Return: TC_ACT_REDIRECT * * u32 bpf_get_route_realm(skb) * retrieve a dst's tclassid * @skb: pointer to skb * Return: realm if != 0 * * int bpf_perf_event_output(ctx, map, flags, data, size) * output perf raw sample * @ctx: struct pt_regs* * @map: pointer to perf_event_array map * @flags: index of event in the map or bitmask flags * @data: data on stack to be output as raw data * @size: size of data * Return: 0 on success or negative error * * int bpf_get_stackid(ctx, map, flags) * walk user or kernel stack and return id * @ctx: struct pt_regs* * @map: pointer to stack_trace map * @flags: bits 0-7 - numer of stack frames to skip * bit 8 - collect user stack instead of kernel * bit 9 - compare stacks by hash only * bit 10 - if two different stacks hash into the same stackid * discard old * other bits - reserved * Return: >= 0 stackid on success or negative error * * u64 bpf_get_current_task(void) * Returns current task_struct * Return: current * * int bpf_probe_write_user(void *dst, void *src, int len) * safely attempt to write to a location * @dst: destination address in userspace * @src: source address on stack * @len: number of bytes to copy * Return: 0 on success or negative error * * int bpf_get_numa_node_id() * Return: Id of current NUMA node. * * int bpf_probe_read_str(void *dst, int size, const void *unsafe_ptr) * Copy a NUL terminated string from unsafe address. In case the string * length is smaller than size, the target is not padded with further NUL * bytes. In case the string length is larger than size, just count-1 * bytes are copied and the last byte is set to NUL. * @dst: destination address * @size: maximum number of bytes to copy, including the trailing NUL * @unsafe_ptr: unsafe address * Return: * > 0 length of the string including the trailing NUL on success * < 0 error * * int bpf_perf_event_read_value(map, flags, buf, buf_size) * read perf event counter value and perf event enabled/running time * @map: pointer to perf_event_array map * @flags: index of event in the map or bitmask flags * @buf: buf to fill * @buf_size: size of the buf * Return: 0 on success or negative error code * * int bpf_perf_prog_read_value(ctx, buf, buf_size) * read perf prog attached perf event counter and enabled/running time * @ctx: pointer to ctx * @buf: buf to fill * @buf_size: size of the buf * Return : 0 on success or negative error code * * int bpf_override_return(pt_regs, rc) * @pt_regs: pointer to struct pt_regs * @rc: the return value to set * * int bpf_get_stack(struct pt_regs *regs, void *buf, u32 size, u64 flags) * Description * Return a user or a kernel stack in bpf program provided buffer. * To achieve this, the helper needs *ctx*, which is a pointer * to the context on which the tracing program is executed. * To store the stacktrace, the bpf program provides *buf* with * a nonnegative *size*. * * The last argument, *flags*, holds the number of stack frames to * skip (from 0 to 255), masked with * **BPF_F_SKIP_FIELD_MASK**. The next bits can be used to set * the following flags: * * **BPF_F_USER_STACK** * Collect a user space stack instead of a kernel stack. * **BPF_F_USER_BUILD_ID** * Collect buildid+offset instead of ips for user stack, * only valid if **BPF_F_USER_STACK** is also specified. * * **bpf_get_stack**\ () can collect up to * **PERF_MAX_STACK_DEPTH** both kernel and user frames, subject * to sufficient large buffer size. Note that * this limit can be controlled with the **sysctl** program, and * that it should be manually increased in order to profile long * user stacks (such as stacks for Java programs). To do so, use: * * :: * * # sysctl kernel.perf_event_max_stack=<new value> * * Return * a non-negative value equal to or less than size on success, or * a negative error in case of failure. */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ FN(map_lookup_elem), \ FN(map_update_elem), \ FN(map_delete_elem), \ FN(probe_read), \ FN(ktime_get_ns), \ FN(trace_printk), \ FN(get_prandom_u32), \ FN(get_smp_processor_id), \ FN(skb_store_bytes), \ FN(l3_csum_replace), \ FN(l4_csum_replace), \ FN(tail_call), \ FN(clone_redirect), \ FN(get_current_pid_tgid), \ FN(get_current_uid_gid), \ FN(get_current_comm), \ FN(get_cgroup_classid), \ FN(skb_vlan_push), \ FN(skb_vlan_pop), \ FN(skb_get_tunnel_key), \ FN(skb_set_tunnel_key), \ FN(perf_event_read), \ FN(redirect), \ FN(get_route_realm), \ FN(perf_event_output), \ FN(skb_load_bytes), \ FN(get_stackid), \ FN(csum_diff), \ FN(skb_get_tunnel_opt), \ FN(skb_set_tunnel_opt), \ FN(skb_change_proto), \ FN(skb_change_type), \ FN(skb_under_cgroup), \ FN(get_hash_recalc), \ FN(get_current_task), \ FN(probe_write_user), \ FN(current_task_under_cgroup), \ FN(skb_change_tail), \ FN(skb_pull_data), \ FN(csum_update), \ FN(set_hash_invalid), \ FN(get_numa_node_id), \ FN(skb_change_head), \ FN(xdp_adjust_head), \ FN(probe_read_str), \ FN(get_socket_cookie), \ FN(get_socket_uid), \ FN(set_hash), \ FN(setsockopt), \ FN(skb_adjust_room), \ FN(redirect_map), \ FN(sk_redirect_map), \ FN(sock_map_update), \ FN(xdp_adjust_meta), \ FN(perf_event_read_value), \ FN(perf_prog_read_value), \ FN(getsockopt), \ FN(override_return), \ FN(sock_ops_cb_flags_set), \ FN(msg_redirect_map), \ FN(msg_apply_bytes), \ FN(msg_cork_bytes), \ FN(msg_pull_data), \ FN(bind), \ FN(xdp_adjust_tail), \ FN(skb_get_xfrm_state), \ FN(get_stack), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call */ #define __BPF_ENUM_FN(x) BPF_FUNC_ ## x enum bpf_func_id { __BPF_FUNC_MAPPER(__BPF_ENUM_FN) __BPF_FUNC_MAX_ID, }; #undef __BPF_ENUM_FN /* flags for both BPF_FUNC_get_stackid and BPF_FUNC_get_stack. */ #define BPF_F_SKIP_FIELD_MASK 0xffULL #define BPF_F_USER_STACK (1ULL << 8) /* flags used by BPF_FUNC_get_stackid only. */ #define BPF_F_FAST_STACK_CMP (1ULL << 9) #define BPF_F_REUSE_STACKID (1ULL << 10) /* flags used by BPF_FUNC_get_stack only. */ #define BPF_F_USER_BUILD_ID (1ULL << 11) /* BPF_FUNC_perf_event_output, BPF_FUNC_perf_event_read and * BPF_FUNC_perf_event_read_value flags. */ #define BPF_F_INDEX_MASK 0xffffffffULL #define BPF_F_CURRENT_CPU BPF_F_INDEX_MASK /* BPF_FUNC_perf_event_output for sk_buff input context. */ #define BPF_F_CTXLEN_MASK (0xfffffULL << 32) /* user accessible mirror of in-kernel sk_buff. * new fields can only be added to the end of this structure */ struct __sk_buff { __u32 len; __u32 pkt_type; __u32 mark; __u32 queue_mapping; __u32 protocol; __u32 vlan_present; __u32 vlan_tci; __u32 vlan_proto; __u32 priority; __u32 ingress_ifindex; __u32 ifindex; __u32 tc_index; __u32 cb[5]; __u32 hash; __u32 tc_classid; __u32 data; __u32 data_end; }; #define BPF_TAG_SIZE 8 struct bpf_prog_info { __u32 type; __u32 id; __u8 tag[BPF_TAG_SIZE]; __u32 jited_prog_len; __u32 xlated_prog_len; __aligned_u64 jited_prog_insns; __aligned_u64 xlated_prog_insns; __u64 load_time; /* ns since boottime */ __u32 created_by_uid; __u32 nr_map_ids; __aligned_u64 map_ids; char name[BPF_OBJ_NAME_LEN]; __u32 ifindex; __u32 gpl_compatible:1; __u64 netns_dev; __u64 netns_ino; __u32 nr_jited_ksyms; __u32 nr_jited_func_lens; __aligned_u64 jited_ksyms; __aligned_u64 jited_func_lens; } __attribute__((aligned(8))); struct bpf_map_info { __u32 type; __u32 id; __u32 key_size; __u32 value_size; __u32 max_entries; __u32 map_flags; char name[BPF_OBJ_NAME_LEN]; } __attribute__((aligned(8))); struct bpf_perf_event_value { __u64 counter; __u64 enabled; __u64 running; }; #endif /* __LINUX_BPF_H__ */