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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#ifndef _LINUX_BTF_IDS_H#define _LINUX_BTF_IDS_H
#include <linux/types.h> /* for u32 */
struct btf_id_set { u32 cnt; u32 ids[];};
/* This flag implies BTF_SET8 holds kfunc(s) */#define BTF_SET8_KFUNCS (1 << 0)
struct btf_id_set8 { u32 cnt; u32 flags; struct { u32 id; u32 flags; } pairs[];};
#ifdef CONFIG_DEBUG_INFO_BTF
#include <linux/compiler.h> /* for __PASTE */#include <linux/compiler_attributes.h> /* for __maybe_unused */#include <linux/stringify.h>
/* * Following macros help to define lists of BTF IDs placed * in .BTF_ids section. They are initially filled with zeros * (during compilation) and resolved later during the * linking phase by resolve_btfids tool. * * Any change in list layout must be reflected in resolve_btfids * tool logic. */
#define BTF_IDS_SECTION ".BTF_ids"
#define ____BTF_ID(symbol, word) \asm( \".pushsection " BTF_IDS_SECTION ",\"a\"; \n" \".local " #symbol " ; \n" \".type " #symbol ", STT_OBJECT; \n" \".size " #symbol ", 4; \n" \#symbol ": \n" \".zero 4 \n" \word \".popsection; \n");
#define __BTF_ID(symbol, word) \ ____BTF_ID(symbol, word)
#define __ID(prefix) \ __PASTE(__PASTE(prefix, __COUNTER__), __LINE__)
/* * The BTF_ID defines unique symbol for each ID pointing * to 4 zero bytes. */#define BTF_ID(prefix, name) \ __BTF_ID(__ID(__BTF_ID__##prefix##__##name##__), "")
#define ____BTF_ID_FLAGS(prefix, name, flags) \ __BTF_ID(__ID(__BTF_ID__##prefix##__##name##__), ".long " #flags "\n")#define __BTF_ID_FLAGS(prefix, name, flags, ...) \ ____BTF_ID_FLAGS(prefix, name, flags)#define BTF_ID_FLAGS(prefix, name, ...) \ __BTF_ID_FLAGS(prefix, name, ##__VA_ARGS__, 0)
/* * The BTF_ID_LIST macro defines pure (unsorted) list * of BTF IDs, with following layout: * * BTF_ID_LIST(list1) * BTF_ID(type1, name1) * BTF_ID(type2, name2) * * list1: * __BTF_ID__type1__name1__1: * .zero 4 * __BTF_ID__type2__name2__2: * .zero 4 * */#define __BTF_ID_LIST(name, scope) \asm( \".pushsection " BTF_IDS_SECTION ",\"a\"; \n" \"." #scope " " #name "; \n" \#name ":; \n" \".popsection; \n");
#define BTF_ID_LIST(name) \__BTF_ID_LIST(name, local) \extern u32 name[];
#define BTF_ID_LIST_GLOBAL(name, n) \__BTF_ID_LIST(name, globl)
/* The BTF_ID_LIST_SINGLE macro defines a BTF_ID_LIST with * a single entry. */#define BTF_ID_LIST_SINGLE(name, prefix, typename) \ BTF_ID_LIST(name) \ BTF_ID(prefix, typename)#define BTF_ID_LIST_GLOBAL_SINGLE(name, prefix, typename) \ BTF_ID_LIST_GLOBAL(name, 1) \ BTF_ID(prefix, typename)
/* * The BTF_ID_UNUSED macro defines 4 zero bytes. * It's used when we want to define 'unused' entry * in BTF_ID_LIST, like: * * BTF_ID_LIST(bpf_skb_output_btf_ids) * BTF_ID(struct, sk_buff) * BTF_ID_UNUSED * BTF_ID(struct, task_struct) */
#define BTF_ID_UNUSED \asm( \".pushsection " BTF_IDS_SECTION ",\"a\"; \n" \".zero 4 \n" \".popsection; \n");
/* * The BTF_SET_START/END macros pair defines sorted list of * BTF IDs plus its members count, with following layout: * * BTF_SET_START(list) * BTF_ID(type1, name1) * BTF_ID(type2, name2) * BTF_SET_END(list) * * __BTF_ID__set__list: * .zero 4 * list: * __BTF_ID__type1__name1__3: * .zero 4 * __BTF_ID__type2__name2__4: * .zero 4 * */#define __BTF_SET_START(name, scope) \asm( \".pushsection " BTF_IDS_SECTION ",\"a\"; \n" \"." #scope " __BTF_ID__set__" #name "; \n" \"__BTF_ID__set__" #name ":; \n" \".zero 4 \n" \".popsection; \n");
#define BTF_SET_START(name) \__BTF_ID_LIST(name, local) \__BTF_SET_START(name, local)
#define BTF_SET_START_GLOBAL(name) \__BTF_ID_LIST(name, globl) \__BTF_SET_START(name, globl)
#define BTF_SET_END(name) \asm( \".pushsection " BTF_IDS_SECTION ",\"a\"; \n" \".size __BTF_ID__set__" #name ", .-" #name " \n" \".popsection; \n"); \extern struct btf_id_set name;
/* * The BTF_SET8_START/END macros pair defines sorted list of * BTF IDs and their flags plus its members count, with the * following layout: * * BTF_SET8_START(list) * BTF_ID_FLAGS(type1, name1, flags) * BTF_ID_FLAGS(type2, name2, flags) * BTF_SET8_END(list) * * __BTF_ID__set8__list: * .zero 8 * list: * __BTF_ID__type1__name1__3: * .zero 4 * .word (1 << 0) | (1 << 2) * __BTF_ID__type2__name2__5: * .zero 4 * .word (1 << 3) | (1 << 1) | (1 << 2) * */#define __BTF_SET8_START(name, scope, flags) \__BTF_ID_LIST(name, local) \asm( \".pushsection " BTF_IDS_SECTION ",\"a\"; \n" \"." #scope " __BTF_ID__set8__" #name "; \n" \"__BTF_ID__set8__" #name ":; \n" \".zero 4 \n" \".long " __stringify(flags) "\n" \".popsection; \n");
#define BTF_SET8_START(name) \__BTF_SET8_START(name, local, 0)
#define BTF_SET8_END(name) \asm( \".pushsection " BTF_IDS_SECTION ",\"a\"; \n" \".size __BTF_ID__set8__" #name ", .-" #name " \n" \".popsection; \n"); \extern struct btf_id_set8 name;
#define BTF_KFUNCS_START(name) \__BTF_SET8_START(name, local, BTF_SET8_KFUNCS)
#define BTF_KFUNCS_END(name) \BTF_SET8_END(name)
#else
#define BTF_ID_LIST(name) static u32 __maybe_unused name[128];#define BTF_ID(prefix, name)#define BTF_ID_FLAGS(prefix, name, ...)#define BTF_ID_UNUSED#define BTF_ID_LIST_GLOBAL(name, n) u32 __maybe_unused name[n];#define BTF_ID_LIST_SINGLE(name, prefix, typename) static u32 __maybe_unused name[1];#define BTF_ID_LIST_GLOBAL_SINGLE(name, prefix, typename) u32 __maybe_unused name[1];#define BTF_SET_START(name) static struct btf_id_set __maybe_unused name = { 0 };#define BTF_SET_START_GLOBAL(name) static struct btf_id_set __maybe_unused name = { 0 };#define BTF_SET_END(name)#define BTF_SET8_START(name) static struct btf_id_set8 __maybe_unused name = { 0 };#define BTF_SET8_END(name)#define BTF_KFUNCS_START(name) static struct btf_id_set8 __maybe_unused name = { .flags = BTF_SET8_KFUNCS };#define BTF_KFUNCS_END(name)
#endif /* CONFIG_DEBUG_INFO_BTF */
#ifdef CONFIG_NET/* Define a list of socket types which can be the argument for * skc_to_*_sock() helpers. All these sockets should have * sock_common as the first argument in its memory layout. */#define BTF_SOCK_TYPE_xxx \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_INET, inet_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_INET_CONN, inet_connection_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_INET_REQ, inet_request_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_INET_TW, inet_timewait_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_REQ, request_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_SOCK, sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_SOCK_COMMON, sock_common) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_TCP, tcp_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_TCP_REQ, tcp_request_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_TCP_TW, tcp_timewait_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_TCP6, tcp6_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_UDP, udp_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_UDP6, udp6_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_UNIX, unix_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_MPTCP, mptcp_sock) \ BTF_SOCK_TYPE(BTF_SOCK_TYPE_SOCKET, socket)
enum {#define BTF_SOCK_TYPE(name, str) name,BTF_SOCK_TYPE_xxx#undef BTF_SOCK_TYPEMAX_BTF_SOCK_TYPE,};
extern u32 btf_sock_ids[];#endif
#define BTF_TRACING_TYPE_xxx \ BTF_TRACING_TYPE(BTF_TRACING_TYPE_TASK, task_struct) \ BTF_TRACING_TYPE(BTF_TRACING_TYPE_FILE, file) \ BTF_TRACING_TYPE(BTF_TRACING_TYPE_VMA, vm_area_struct)
enum {#define BTF_TRACING_TYPE(name, type) name,BTF_TRACING_TYPE_xxx#undef BTF_TRACING_TYPEMAX_BTF_TRACING_TYPE,};
extern u32 btf_tracing_ids[];extern u32 bpf_cgroup_btf_id[];extern u32 bpf_local_storage_map_btf_id[];extern u32 btf_bpf_map_id[];extern u32 bpf_kmem_cache_btf_id[];extern u32 bpf_multi_func_btf_id[];
#endif