428 lines
12 KiB
C
428 lines
12 KiB
C
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/* Copyright (C) 2019-2021 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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/* The purpose of this file is to provide a compatiblity layer with
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the Linux kernel bpf_helpers.h header that is located in
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linux/tools/testing/selftests/bpf/bpf_helpers.h. That file is
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currently llvm-specific. */
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#ifndef __BPF_HELPERS_H
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#define __BPF_HELPERS_H
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#define SEC(NAME) __attribute__((section(NAME), used))
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#define KERNEL_HELPER(NUM) __attribute__((kernel_helper(NUM)))
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/* Flags used in some kernel helpers. */
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#define BPF_ANY 0
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#define BPF_NOEXIST 1
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#define BPF_EXIST 2
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#define BPF_F_LOCK 4
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#define BPF_F_NO_COMMON_LRU (1U << 1)
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#define BPF_F_NUMA_NODE (1U << 2)
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/* Prototypes of functions to call kernel helpers.
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Please keep these protoypes sorted by helper number. */
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void *bpf_map_lookup_elem (void *map, const void *key)
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KERNEL_HELPER (1);
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int bpf_map_update_elem (void *map, const void *key, const void *value,
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unsigned long long flags)
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KERNEL_HELPER (2);
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int bpf_map_delete_elem (void *map, const void *key)
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KERNEL_HELPER (3);
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int bpf_probe_read (void *dst, int size, const void *unsafe_ptr)
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KERNEL_HELPER (4);
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unsigned long long bpf_ktime_get_ns (void)
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KERNEL_HELPER (5);
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int bpf_trace_printk (const char *fmt, int fmt_size, ...)
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KERNEL_HELPER (6);
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unsigned long long bpf_get_prandom_u32 (void)
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KERNEL_HELPER (7);
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unsigned long long bpf_get_smp_processor_id (void)
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KERNEL_HELPER (8);
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int bpf_skb_store_bytes (void *ctx, int off, void *from, int len,
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unsigned int start_header)
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KERNEL_HELPER (9);
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int bpf_l3_csum_replace (void *ctx, int off, int from, int to, int flags)
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KERNEL_HELPER (10);
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int bpf_l4_csum_replace (void *ctx, int off, int from, int to, int flags)
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KERNEL_HELPER (11);
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int bpf_tail_call (void *ctx, void *map, unsigned int index)
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KERNEL_HELPER (12);
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int bpf_clone_redirect (void *ctx, int ifindex, int flags)
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KERNEL_HELPER (13);
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unsigned long long bpf_get_current_pid_tgid (void)
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KERNEL_HELPER (14);
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unsigned long long bpf_get_current_uid_gid (void)
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KERNEL_HELPER (15);
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int bpf_get_current_comm (void *buf, int buf_size)
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KERNEL_HELPER (16);
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unsigned int bpf_get_cgroup_classid (void *ctx)
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KERNEL_HELPER (17);
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int bpf_skb_vlan_push (void *ctx, short vlan_proto,
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unsigned short vlan_tci)
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KERNEL_HELPER (18);
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int bpf_skb_vlan_pop (void *ctx)
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KERNEL_HELPER (19);
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int bpf_skb_get_tunnel_key (void *ctx, void *key, int size, int flags)
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KERNEL_HELPER (20);
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int bpf_skb_set_tunnel_key (void *ctx, void *key, int size, int flags)
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KERNEL_HELPER (21);
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unsigned long long bpf_perf_event_read (void *map, unsigned long long flags)
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KERNEL_HELPER (22);
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int bpf_redirect (int ifindex, int flags)
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KERNEL_HELPER (23);
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unsigned int bpf_get_route_realm (void *ctx)
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KERNEL_HELPER (24);
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int bpf_perf_event_output (void *ctx, void *map, unsigned long long flags,
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void *data, int size)
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KERNEL_HELPER (25);
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int bpf_skb_load_bytes (void *ctx, int off, void *to, int len)
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KERNEL_HELPER (26);
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int bpf_get_stackid (void *ctx, void *map, int flags)
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KERNEL_HELPER (27);
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int bpf_csum_diff (void *from, int from_size, void *to, int to_size, int seed)
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KERNEL_HELPER (28);
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int bpf_skb_get_tunnel_opt (void *ctx, void *md, int size)
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KERNEL_HELPER (29);
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int bpf_skb_set_tunnel_opt (void *ctx, void *md, int size)
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KERNEL_HELPER (30);
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int bpf_skb_change_proto (void *ctx, short proto, unsigned long flags)
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KERNEL_HELPER (31);
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int bpf_skb_change_type (void *ctx, unsigned int type)
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KERNEL_HELPER (32);
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int bpf_skb_under_cgroup (void *ctx, void *map, int index)
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KERNEL_HELPER (33);
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unsigned int bpf_get_hash_recalc (void *ctx)
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KERNEL_HELPER (34);
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unsigned long long bpf_get_current_task (void)
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KERNEL_HELPER (35);
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int bpf_probe_write_user (void *dst, const void *src, int size)
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KERNEL_HELPER (36);
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int bpf_current_task_under_cgroup (void *map, int index)
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KERNEL_HELPER (37);
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int bpf_skb_change_tail (void *ctx, unsigned int len, unsigned long flags)
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KERNEL_HELPER (38);
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int bpf_skb_pull_data (void *, int len)
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KERNEL_HELPER (39);
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long long bpf_csum_update (void *ctx, unsigned int csum)
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KERNEL_HELPER (40);
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void bpf_set_hash_invalid (void *ctx)
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KERNEL_HELPER (41);
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int bpf_get_numa_node_id (void)
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KERNEL_HELPER (42);
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int bpf_skb_change_head (void *, int len, int flags)
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KERNEL_HELPER (43);
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int bpf_xdp_adjust_head (void *ctx, int offset)
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KERNEL_HELPER (44);
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int bpf_probe_read_str (void *ctx, unsigned int size, const void *unsafe_ptr)
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KERNEL_HELPER (45);
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int bpf_get_socket_cookie (void *ctx)
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KERNEL_HELPER (46);
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unsigned int bpf_get_socket_uid (void *ctx)
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KERNEL_HELPER (47);
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unsigned int bpf_set_hash (void *ctx, unsigned int hash)
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KERNEL_HELPER (48);
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int bpf_setsockopt (void *ctx, int level, int optname, void *optval, int optlen)
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KERNEL_HELPER (49);
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int bpf_skb_adjust_room (void *ctx, int len_diff, unsigned int mode,
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unsigned long long flags)
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KERNEL_HELPER (50);
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int bpf_redirect_map (void *map, int key, int flags)
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KERNEL_HELPER (51);
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int bpf_sk_redirect_map (void *ctx, void *map, int key, int flags)
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KERNEL_HELPER (52);
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int bpf_sock_map_update (void *map, void *key, void *value,
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unsigned long long flags)
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KERNEL_HELPER (53);
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int bpf_xdp_adjust_meta (void *ctx, int offset)
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KERNEL_HELPER (54);
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int bpf_perf_event_read_value (void *map, unsigned long long flags,
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void *buf, unsigned int buf_size)
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KERNEL_HELPER (55);
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int bpf_perf_prog_read_value (void *ctx, void *buf, unsigned int buf_size)
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KERNEL_HELPER (56);
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int bpf_getsockopt (void *ctx, int level, int optname, void *optval,
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int optlen)
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KERNEL_HELPER (57);
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int bpf_override_return (void *ctx, unsigned long rc)
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KERNEL_HELPER (58);
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int bpf_sock_ops_cb_flags_set (void *ctx, int flags)
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KERNEL_HELPER (59);
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int bpf_msg_redirect_map (void *ctx, void *map, int key, int flags)
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KERNEL_HELPER (60);
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int bpf_msg_apply_bytes (void *ctx, int len)
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KERNEL_HELPER (61);
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int bpf_msg_cork_bytes (void *ctx, int len)
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KERNEL_HELPER (62);
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int bpf_msg_pull_data (void *, int len)
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KERNEL_HELPER (63);
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int bpf_bind (void *ctx, void *addr, int addr_len)
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KERNEL_HELPER (64);
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int bpf_xdp_adjust_tail (struct xdp_md *xdp_md, int delta)
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KERNEL_HELPER (65);
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int bpf_skb_get_xfrm_state (void *ctx, int index, void *state,
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int size, int flags)
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KERNEL_HELPER (66);
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int bpf_get_stack (void *ctx, void *buf, int size, int flags)
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KERNEL_HELPER (67);
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int bpf_skb_load_bytes_relative (void *ctx, int off, void *to, int len,
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unsigned int start_header)
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KERNEL_HELPER (68);
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int bpf_fib_lookup (void *ctx, struct bpf_fib_lookup *params,
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int plen, unsigned int flags)
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KERNEL_HELPER (69);
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int bpf_sock_hash_update (void *map, void *key, void *value,
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unsigned long long flags)
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KERNEL_HELPER (70);
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int bpf_msg_redirect_hash (void *ctx, void *map, void *key, int flags)
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KERNEL_HELPER (71);
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int bpf_sk_redirect_hash (void *ctx, void *map, void *key, int flags)
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KERNEL_HELPER (72);
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int bpf_lwt_push_encap (void *ctx, unsigned int type, void *hdr,
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unsigned int len)
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KERNEL_HELPER (73);
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int bpf_lwt_seg6_store_bytes (void *ctx, unsigned int offset,
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void *from, unsigned int len)
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KERNEL_HELPER (74);
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int bpf_lwt_seg6_adjust_srh (void *ctx, unsigned int offset,
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unsigned int len)
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KERNEL_HELPER (75);
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int bpf_lwt_seg6_action (void *ctx, unsigned int action, void *param,
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unsigned int param_len)
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KERNEL_HELPER (76);
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int bpf_rc_repeat (void *ctx)
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KERNEL_HELPER (77);
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int bpf_rc_keydown (void *ctx, unsigned int protocol,
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unsigned long long scancode, unsigned int toggle)
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KERNEL_HELPER (78);
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unsigned bpf_skb_cgroup_id (void *ctx)
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KERNEL_HELPER (79);
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unsigned long long bpf_get_current_cgroup_id (void)
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KERNEL_HELPER (80);
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void *bpf_get_local_storage (void *map, unsigned long long flags)
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KERNEL_HELPER (81);
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int bpf_sk_select_reuseport (void *ctx, void *map, void *key, unsigned int flags)
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KERNEL_HELPER (82);
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unsigned long long bpf_skb_ancestor_cgroup_id (void *ctx, int level)
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KERNEL_HELPER (83);
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struct bpf_sock *bpf_sk_lookup_tcp (void *ctx, struct bpf_sock_tuple *tuple,
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int size, unsigned long long netns_id,
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unsigned long long flags)
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KERNEL_HELPER (84);
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struct bpf_sock *bpf_sk_lookup_udp (void *ctx, struct bpf_sock_tuple *tuple,
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int size, unsigned long long netns_id,
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unsigned long long flags)
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KERNEL_HELPER (85);
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int bpf_sk_release (struct bpf_sock *sk)
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KERNEL_HELPER (86);
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int bpf_map_push_elem (void *map, const void *value, unsigned long long flags)
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KERNEL_HELPER (87);
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int bpf_map_pop_elem (void *map, void *value)
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KERNEL_HELPER (88);
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int bpf_map_peek_elem (void *map, void *value)
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KERNEL_HELPER (89);
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int bpf_msg_push_data (void *ctx, int start, int cut, int flags)
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KERNEL_HELPER (90);
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int bpf_msg_pop_data (void *ctx, int start, int cut, int flags)
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KERNEL_HELPER (91);
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int bpf_rc_pointer_rel (void *ctx, int rel_x, int rel_y)
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KERNEL_HELPER (92);
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void bpf_spin_lock (struct bpf_spin_lock *lock)
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KERNEL_HELPER (93);
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void bpf_spin_unlock (struct bpf_spin_lock *lock)
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KERNEL_HELPER (94);
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struct bpf_sock *bpf_sk_fullsock (struct bpf_sock *sk)
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KERNEL_HELPER (95);
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struct bpf_sock *bpf_tcp_sock (struct bpf_sock *sk)
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KERNEL_HELPER (96);
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int bpf_skb_ecn_set_ce (void *ctx)
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KERNEL_HELPER (97);
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struct bpf_sock *bpf_get_listener_sock (struct bpf_sock *sk)
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KERNEL_HELPER (98);
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struct bpf_sock *bpf_skc_lookup_tcp (void *ctx,
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struct bpf_sock_tuple *tuple,
|
||
|
|
unsigned int tuple_size,
|
||
|
|
unsigned long netns,
|
||
|
|
unsigned long flags)
|
||
|
|
KERNEL_HELPER (99);
|
||
|
|
|
||
|
|
int bpf_tcp_check_syncookie (struct bpf_sock *sk, void *iph,
|
||
|
|
unsigned int iph_len,
|
||
|
|
struct tcp_hdr *th,
|
||
|
|
unsigned int th_len)
|
||
|
|
KERNEL_HELPER (100);
|
||
|
|
|
||
|
|
int bpf_sysctl_get_name (struct bpf_sysctl *ctx,
|
||
|
|
char *buf, unsigned long buf_len,
|
||
|
|
unsigned long flags)
|
||
|
|
KERNEL_HELPER (101);
|
||
|
|
|
||
|
|
int bpf_sysctl_get_current_value (struct bpf_sysctl *ctx,
|
||
|
|
char *buf, unsigned long buf_len)
|
||
|
|
KERNEL_HELPER (102);
|
||
|
|
|
||
|
|
int bpf_sysctl_get_new_value (struct bpf_sysctl *ctx, char *buf,
|
||
|
|
unsigned long buf_len)
|
||
|
|
KERNEL_HELPER (103);
|
||
|
|
|
||
|
|
int bpf_sysctl_set_new_value (struct bpf_sysctl *ctx, const char *buf,
|
||
|
|
unsigned long buf_len)
|
||
|
|
KERNEL_HELPER (104);
|
||
|
|
|
||
|
|
int bpf_strtol (const char *buf, unsigned long buf_len,
|
||
|
|
unsigned long flags, long *res)
|
||
|
|
KERNEL_HELPER (105);
|
||
|
|
|
||
|
|
int bpf_strtoul (const char *buf, unsigned long buf_len,
|
||
|
|
unsigned long flags, unsigned long *res)
|
||
|
|
KERNEL_HELPER (106);
|
||
|
|
|
||
|
|
void *bpf_sk_storage_get (void *map, struct bpf_sock *sk,
|
||
|
|
void *value, long flags)
|
||
|
|
KERNEL_HELPER (107);
|
||
|
|
|
||
|
|
int bpf_sk_storage_delete (void *map, struct bpf_sock *sk)
|
||
|
|
KERNEL_HELPER (108);
|
||
|
|
|
||
|
|
/* Functions to emit BPF_LD_ABS and BPF_LD_IND instructions. We
|
||
|
|
provide the "standard" names as synonyms of the corresponding GCC
|
||
|
|
builtins. Note how the SKB argument is ignored. */
|
||
|
|
|
||
|
|
#define load_byte(SKB,OFF) __builtin_bpf_load_byte ((OFF))
|
||
|
|
#define load_half(SKB,OFF) __builtin_bpf_load_half ((OFF))
|
||
|
|
#define load_word(SKB,OFF) __builtin_bpf_load_word ((OFF))
|
||
|
|
|
||
|
|
struct bpf_map_def
|
||
|
|
{
|
||
|
|
unsigned int type;
|
||
|
|
unsigned int key_size;
|
||
|
|
unsigned int value_size;
|
||
|
|
unsigned int max_entries;
|
||
|
|
unsigned int map_flags;
|
||
|
|
unsigned int inner_map_idx;
|
||
|
|
unsigned int numa_node;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* ! __BPF_HELPERS_H */
|