1
2#ifndef __BPF_HELPERS_H
3#define __BPF_HELPERS_H
4
5
6
7
8
9#define SEC(NAME) __attribute__((section(NAME), used))
10
11
12static void *(*bpf_map_lookup_elem)(void *map, void *key) =
13 (void *) BPF_FUNC_map_lookup_elem;
14static int (*bpf_map_update_elem)(void *map, void *key, void *value,
15 unsigned long long flags) =
16 (void *) BPF_FUNC_map_update_elem;
17static int (*bpf_map_delete_elem)(void *map, void *key) =
18 (void *) BPF_FUNC_map_delete_elem;
19static int (*bpf_map_push_elem)(void *map, void *value,
20 unsigned long long flags) =
21 (void *) BPF_FUNC_map_push_elem;
22static int (*bpf_map_pop_elem)(void *map, void *value) =
23 (void *) BPF_FUNC_map_pop_elem;
24static int (*bpf_map_peek_elem)(void *map, void *value) =
25 (void *) BPF_FUNC_map_peek_elem;
26static int (*bpf_probe_read)(void *dst, int size, void *unsafe_ptr) =
27 (void *) BPF_FUNC_probe_read;
28static unsigned long long (*bpf_ktime_get_ns)(void) =
29 (void *) BPF_FUNC_ktime_get_ns;
30static int (*bpf_trace_printk)(const char *fmt, int fmt_size, ...) =
31 (void *) BPF_FUNC_trace_printk;
32static void (*bpf_tail_call)(void *ctx, void *map, int index) =
33 (void *) BPF_FUNC_tail_call;
34static unsigned long long (*bpf_get_smp_processor_id)(void) =
35 (void *) BPF_FUNC_get_smp_processor_id;
36static unsigned long long (*bpf_get_current_pid_tgid)(void) =
37 (void *) BPF_FUNC_get_current_pid_tgid;
38static unsigned long long (*bpf_get_current_uid_gid)(void) =
39 (void *) BPF_FUNC_get_current_uid_gid;
40static int (*bpf_get_current_comm)(void *buf, int buf_size) =
41 (void *) BPF_FUNC_get_current_comm;
42static unsigned long long (*bpf_perf_event_read)(void *map,
43 unsigned long long flags) =
44 (void *) BPF_FUNC_perf_event_read;
45static int (*bpf_clone_redirect)(void *ctx, int ifindex, int flags) =
46 (void *) BPF_FUNC_clone_redirect;
47static int (*bpf_redirect)(int ifindex, int flags) =
48 (void *) BPF_FUNC_redirect;
49static int (*bpf_redirect_map)(void *map, int key, int flags) =
50 (void *) BPF_FUNC_redirect_map;
51static int (*bpf_perf_event_output)(void *ctx, void *map,
52 unsigned long long flags, void *data,
53 int size) =
54 (void *) BPF_FUNC_perf_event_output;
55static int (*bpf_get_stackid)(void *ctx, void *map, int flags) =
56 (void *) BPF_FUNC_get_stackid;
57static int (*bpf_probe_write_user)(void *dst, void *src, int size) =
58 (void *) BPF_FUNC_probe_write_user;
59static int (*bpf_current_task_under_cgroup)(void *map, int index) =
60 (void *) BPF_FUNC_current_task_under_cgroup;
61static int (*bpf_skb_get_tunnel_key)(void *ctx, void *key, int size, int flags) =
62 (void *) BPF_FUNC_skb_get_tunnel_key;
63static int (*bpf_skb_set_tunnel_key)(void *ctx, void *key, int size, int flags) =
64 (void *) BPF_FUNC_skb_set_tunnel_key;
65static int (*bpf_skb_get_tunnel_opt)(void *ctx, void *md, int size) =
66 (void *) BPF_FUNC_skb_get_tunnel_opt;
67static int (*bpf_skb_set_tunnel_opt)(void *ctx, void *md, int size) =
68 (void *) BPF_FUNC_skb_set_tunnel_opt;
69static unsigned long long (*bpf_get_prandom_u32)(void) =
70 (void *) BPF_FUNC_get_prandom_u32;
71static int (*bpf_xdp_adjust_head)(void *ctx, int offset) =
72 (void *) BPF_FUNC_xdp_adjust_head;
73static int (*bpf_xdp_adjust_meta)(void *ctx, int offset) =
74 (void *) BPF_FUNC_xdp_adjust_meta;
75static int (*bpf_get_socket_cookie)(void *ctx) =
76 (void *) BPF_FUNC_get_socket_cookie;
77static int (*bpf_setsockopt)(void *ctx, int level, int optname, void *optval,
78 int optlen) =
79 (void *) BPF_FUNC_setsockopt;
80static int (*bpf_getsockopt)(void *ctx, int level, int optname, void *optval,
81 int optlen) =
82 (void *) BPF_FUNC_getsockopt;
83static int (*bpf_sock_ops_cb_flags_set)(void *ctx, int flags) =
84 (void *) BPF_FUNC_sock_ops_cb_flags_set;
85static int (*bpf_sk_redirect_map)(void *ctx, void *map, int key, int flags) =
86 (void *) BPF_FUNC_sk_redirect_map;
87static int (*bpf_sk_redirect_hash)(void *ctx, void *map, void *key, int flags) =
88 (void *) BPF_FUNC_sk_redirect_hash;
89static int (*bpf_sock_map_update)(void *map, void *key, void *value,
90 unsigned long long flags) =
91 (void *) BPF_FUNC_sock_map_update;
92static int (*bpf_sock_hash_update)(void *map, void *key, void *value,
93 unsigned long long flags) =
94 (void *) BPF_FUNC_sock_hash_update;
95static int (*bpf_perf_event_read_value)(void *map, unsigned long long flags,
96 void *buf, unsigned int buf_size) =
97 (void *) BPF_FUNC_perf_event_read_value;
98static int (*bpf_perf_prog_read_value)(void *ctx, void *buf,
99 unsigned int buf_size) =
100 (void *) BPF_FUNC_perf_prog_read_value;
101static int (*bpf_override_return)(void *ctx, unsigned long rc) =
102 (void *) BPF_FUNC_override_return;
103static int (*bpf_msg_redirect_map)(void *ctx, void *map, int key, int flags) =
104 (void *) BPF_FUNC_msg_redirect_map;
105static int (*bpf_msg_redirect_hash)(void *ctx,
106 void *map, void *key, int flags) =
107 (void *) BPF_FUNC_msg_redirect_hash;
108static int (*bpf_msg_apply_bytes)(void *ctx, int len) =
109 (void *) BPF_FUNC_msg_apply_bytes;
110static int (*bpf_msg_cork_bytes)(void *ctx, int len) =
111 (void *) BPF_FUNC_msg_cork_bytes;
112static int (*bpf_msg_pull_data)(void *ctx, int start, int end, int flags) =
113 (void *) BPF_FUNC_msg_pull_data;
114static int (*bpf_msg_push_data)(void *ctx, int start, int end, int flags) =
115 (void *) BPF_FUNC_msg_push_data;
116static int (*bpf_msg_pop_data)(void *ctx, int start, int cut, int flags) =
117 (void *) BPF_FUNC_msg_pop_data;
118static int (*bpf_bind)(void *ctx, void *addr, int addr_len) =
119 (void *) BPF_FUNC_bind;
120static int (*bpf_xdp_adjust_tail)(void *ctx, int offset) =
121 (void *) BPF_FUNC_xdp_adjust_tail;
122static int (*bpf_skb_get_xfrm_state)(void *ctx, int index, void *state,
123 int size, int flags) =
124 (void *) BPF_FUNC_skb_get_xfrm_state;
125static int (*bpf_sk_select_reuseport)(void *ctx, void *map, void *key, __u32 flags) =
126 (void *) BPF_FUNC_sk_select_reuseport;
127static int (*bpf_get_stack)(void *ctx, void *buf, int size, int flags) =
128 (void *) BPF_FUNC_get_stack;
129static int (*bpf_fib_lookup)(void *ctx, struct bpf_fib_lookup *params,
130 int plen, __u32 flags) =
131 (void *) BPF_FUNC_fib_lookup;
132static int (*bpf_lwt_push_encap)(void *ctx, unsigned int type, void *hdr,
133 unsigned int len) =
134 (void *) BPF_FUNC_lwt_push_encap;
135static int (*bpf_lwt_seg6_store_bytes)(void *ctx, unsigned int offset,
136 void *from, unsigned int len) =
137 (void *) BPF_FUNC_lwt_seg6_store_bytes;
138static int (*bpf_lwt_seg6_action)(void *ctx, unsigned int action, void *param,
139 unsigned int param_len) =
140 (void *) BPF_FUNC_lwt_seg6_action;
141static int (*bpf_lwt_seg6_adjust_srh)(void *ctx, unsigned int offset,
142 unsigned int len) =
143 (void *) BPF_FUNC_lwt_seg6_adjust_srh;
144static int (*bpf_rc_repeat)(void *ctx) =
145 (void *) BPF_FUNC_rc_repeat;
146static int (*bpf_rc_keydown)(void *ctx, unsigned int protocol,
147 unsigned long long scancode, unsigned int toggle) =
148 (void *) BPF_FUNC_rc_keydown;
149static unsigned long long (*bpf_get_current_cgroup_id)(void) =
150 (void *) BPF_FUNC_get_current_cgroup_id;
151static void *(*bpf_get_local_storage)(void *map, unsigned long long flags) =
152 (void *) BPF_FUNC_get_local_storage;
153static unsigned long long (*bpf_skb_cgroup_id)(void *ctx) =
154 (void *) BPF_FUNC_skb_cgroup_id;
155static unsigned long long (*bpf_skb_ancestor_cgroup_id)(void *ctx, int level) =
156 (void *) BPF_FUNC_skb_ancestor_cgroup_id;
157static struct bpf_sock *(*bpf_sk_lookup_tcp)(void *ctx,
158 struct bpf_sock_tuple *tuple,
159 int size, unsigned long long netns_id,
160 unsigned long long flags) =
161 (void *) BPF_FUNC_sk_lookup_tcp;
162static struct bpf_sock *(*bpf_sk_lookup_udp)(void *ctx,
163 struct bpf_sock_tuple *tuple,
164 int size, unsigned long long netns_id,
165 unsigned long long flags) =
166 (void *) BPF_FUNC_sk_lookup_udp;
167static int (*bpf_sk_release)(struct bpf_sock *sk) =
168 (void *) BPF_FUNC_sk_release;
169static int (*bpf_skb_vlan_push)(void *ctx, __be16 vlan_proto, __u16 vlan_tci) =
170 (void *) BPF_FUNC_skb_vlan_push;
171static int (*bpf_skb_vlan_pop)(void *ctx) =
172 (void *) BPF_FUNC_skb_vlan_pop;
173static int (*bpf_rc_pointer_rel)(void *ctx, int rel_x, int rel_y) =
174 (void *) BPF_FUNC_rc_pointer_rel;
175static void (*bpf_spin_lock)(struct bpf_spin_lock *lock) =
176 (void *) BPF_FUNC_spin_lock;
177static void (*bpf_spin_unlock)(struct bpf_spin_lock *lock) =
178 (void *) BPF_FUNC_spin_unlock;
179static struct bpf_sock *(*bpf_sk_fullsock)(struct bpf_sock *sk) =
180 (void *) BPF_FUNC_sk_fullsock;
181static struct bpf_tcp_sock *(*bpf_tcp_sock)(struct bpf_sock *sk) =
182 (void *) BPF_FUNC_tcp_sock;
183static struct bpf_sock *(*bpf_get_listener_sock)(struct bpf_sock *sk) =
184 (void *) BPF_FUNC_get_listener_sock;
185static int (*bpf_skb_ecn_set_ce)(void *ctx) =
186 (void *) BPF_FUNC_skb_ecn_set_ce;
187
188
189
190
191struct sk_buff;
192unsigned long long load_byte(void *skb,
193 unsigned long long off) asm("llvm.bpf.load.byte");
194unsigned long long load_half(void *skb,
195 unsigned long long off) asm("llvm.bpf.load.half");
196unsigned long long load_word(void *skb,
197 unsigned long long off) asm("llvm.bpf.load.word");
198
199
200
201
202struct bpf_map_def {
203 unsigned int type;
204 unsigned int key_size;
205 unsigned int value_size;
206 unsigned int max_entries;
207 unsigned int map_flags;
208 unsigned int inner_map_idx;
209 unsigned int numa_node;
210};
211
212#define BPF_ANNOTATE_KV_PAIR(name, type_key, type_val) \
213 struct ____btf_map_##name { \
214 type_key key; \
215 type_val value; \
216 }; \
217 struct ____btf_map_##name \
218 __attribute__ ((section(".maps." #name), used)) \
219 ____btf_map_##name = { }
220
221static int (*bpf_skb_load_bytes)(void *ctx, int off, void *to, int len) =
222 (void *) BPF_FUNC_skb_load_bytes;
223static int (*bpf_skb_load_bytes_relative)(void *ctx, int off, void *to, int len, __u32 start_header) =
224 (void *) BPF_FUNC_skb_load_bytes_relative;
225static int (*bpf_skb_store_bytes)(void *ctx, int off, void *from, int len, int flags) =
226 (void *) BPF_FUNC_skb_store_bytes;
227static int (*bpf_l3_csum_replace)(void *ctx, int off, int from, int to, int flags) =
228 (void *) BPF_FUNC_l3_csum_replace;
229static int (*bpf_l4_csum_replace)(void *ctx, int off, int from, int to, int flags) =
230 (void *) BPF_FUNC_l4_csum_replace;
231static int (*bpf_csum_diff)(void *from, int from_size, void *to, int to_size, int seed) =
232 (void *) BPF_FUNC_csum_diff;
233static int (*bpf_skb_under_cgroup)(void *ctx, void *map, int index) =
234 (void *) BPF_FUNC_skb_under_cgroup;
235static int (*bpf_skb_change_head)(void *, int len, int flags) =
236 (void *) BPF_FUNC_skb_change_head;
237static int (*bpf_skb_pull_data)(void *, int len) =
238 (void *) BPF_FUNC_skb_pull_data;
239static unsigned int (*bpf_get_cgroup_classid)(void *ctx) =
240 (void *) BPF_FUNC_get_cgroup_classid;
241static unsigned int (*bpf_get_route_realm)(void *ctx) =
242 (void *) BPF_FUNC_get_route_realm;
243static int (*bpf_skb_change_proto)(void *ctx, __be16 proto, __u64 flags) =
244 (void *) BPF_FUNC_skb_change_proto;
245static int (*bpf_skb_change_type)(void *ctx, __u32 type) =
246 (void *) BPF_FUNC_skb_change_type;
247static unsigned int (*bpf_get_hash_recalc)(void *ctx) =
248 (void *) BPF_FUNC_get_hash_recalc;
249static unsigned long long (*bpf_get_current_task)(void *ctx) =
250 (void *) BPF_FUNC_get_current_task;
251static int (*bpf_skb_change_tail)(void *ctx, __u32 len, __u64 flags) =
252 (void *) BPF_FUNC_skb_change_tail;
253static long long (*bpf_csum_update)(void *ctx, __u32 csum) =
254 (void *) BPF_FUNC_csum_update;
255static void (*bpf_set_hash_invalid)(void *ctx) =
256 (void *) BPF_FUNC_set_hash_invalid;
257static int (*bpf_get_numa_node_id)(void) =
258 (void *) BPF_FUNC_get_numa_node_id;
259static int (*bpf_probe_read_str)(void *ctx, __u32 size,
260 const void *unsafe_ptr) =
261 (void *) BPF_FUNC_probe_read_str;
262static unsigned int (*bpf_get_socket_uid)(void *ctx) =
263 (void *) BPF_FUNC_get_socket_uid;
264static unsigned int (*bpf_set_hash)(void *ctx, __u32 hash) =
265 (void *) BPF_FUNC_set_hash;
266static int (*bpf_skb_adjust_room)(void *ctx, __s32 len_diff, __u32 mode,
267 unsigned long long flags) =
268 (void *) BPF_FUNC_skb_adjust_room;
269
270
271#if defined(__TARGET_ARCH_x86)
272 #define bpf_target_x86
273 #define bpf_target_defined
274#elif defined(__TARGET_ARCH_s930x)
275 #define bpf_target_s930x
276 #define bpf_target_defined
277#elif defined(__TARGET_ARCH_arm64)
278 #define bpf_target_arm64
279 #define bpf_target_defined
280#elif defined(__TARGET_ARCH_mips)
281 #define bpf_target_mips
282 #define bpf_target_defined
283#elif defined(__TARGET_ARCH_powerpc)
284 #define bpf_target_powerpc
285 #define bpf_target_defined
286#elif defined(__TARGET_ARCH_sparc)
287 #define bpf_target_sparc
288 #define bpf_target_defined
289#else
290 #undef bpf_target_defined
291#endif
292
293
294#ifndef bpf_target_defined
295#if defined(__x86_64__)
296 #define bpf_target_x86
297#elif defined(__s390x__)
298 #define bpf_target_s930x
299#elif defined(__aarch64__)
300 #define bpf_target_arm64
301#elif defined(__mips__)
302 #define bpf_target_mips
303#elif defined(__powerpc__)
304 #define bpf_target_powerpc
305#elif defined(__sparc__)
306 #define bpf_target_sparc
307#endif
308#endif
309
310#if defined(bpf_target_x86)
311
312#define PT_REGS_PARM1(x) ((x)->di)
313#define PT_REGS_PARM2(x) ((x)->si)
314#define PT_REGS_PARM3(x) ((x)->dx)
315#define PT_REGS_PARM4(x) ((x)->cx)
316#define PT_REGS_PARM5(x) ((x)->r8)
317#define PT_REGS_RET(x) ((x)->sp)
318#define PT_REGS_FP(x) ((x)->bp)
319#define PT_REGS_RC(x) ((x)->ax)
320#define PT_REGS_SP(x) ((x)->sp)
321#define PT_REGS_IP(x) ((x)->ip)
322
323#elif defined(bpf_target_s390x)
324
325#define PT_REGS_PARM1(x) ((x)->gprs[2])
326#define PT_REGS_PARM2(x) ((x)->gprs[3])
327#define PT_REGS_PARM3(x) ((x)->gprs[4])
328#define PT_REGS_PARM4(x) ((x)->gprs[5])
329#define PT_REGS_PARM5(x) ((x)->gprs[6])
330#define PT_REGS_RET(x) ((x)->gprs[14])
331#define PT_REGS_FP(x) ((x)->gprs[11])
332#define PT_REGS_RC(x) ((x)->gprs[2])
333#define PT_REGS_SP(x) ((x)->gprs[15])
334#define PT_REGS_IP(x) ((x)->psw.addr)
335
336#elif defined(bpf_target_arm64)
337
338#define PT_REGS_PARM1(x) ((x)->regs[0])
339#define PT_REGS_PARM2(x) ((x)->regs[1])
340#define PT_REGS_PARM3(x) ((x)->regs[2])
341#define PT_REGS_PARM4(x) ((x)->regs[3])
342#define PT_REGS_PARM5(x) ((x)->regs[4])
343#define PT_REGS_RET(x) ((x)->regs[30])
344#define PT_REGS_FP(x) ((x)->regs[29])
345#define PT_REGS_RC(x) ((x)->regs[0])
346#define PT_REGS_SP(x) ((x)->sp)
347#define PT_REGS_IP(x) ((x)->pc)
348
349#elif defined(bpf_target_mips)
350
351#define PT_REGS_PARM1(x) ((x)->regs[4])
352#define PT_REGS_PARM2(x) ((x)->regs[5])
353#define PT_REGS_PARM3(x) ((x)->regs[6])
354#define PT_REGS_PARM4(x) ((x)->regs[7])
355#define PT_REGS_PARM5(x) ((x)->regs[8])
356#define PT_REGS_RET(x) ((x)->regs[31])
357#define PT_REGS_FP(x) ((x)->regs[30])
358#define PT_REGS_RC(x) ((x)->regs[1])
359#define PT_REGS_SP(x) ((x)->regs[29])
360#define PT_REGS_IP(x) ((x)->cp0_epc)
361
362#elif defined(bpf_target_powerpc)
363
364#define PT_REGS_PARM1(x) ((x)->gpr[3])
365#define PT_REGS_PARM2(x) ((x)->gpr[4])
366#define PT_REGS_PARM3(x) ((x)->gpr[5])
367#define PT_REGS_PARM4(x) ((x)->gpr[6])
368#define PT_REGS_PARM5(x) ((x)->gpr[7])
369#define PT_REGS_RC(x) ((x)->gpr[3])
370#define PT_REGS_SP(x) ((x)->sp)
371#define PT_REGS_IP(x) ((x)->nip)
372
373#elif defined(bpf_target_sparc)
374
375#define PT_REGS_PARM1(x) ((x)->u_regs[UREG_I0])
376#define PT_REGS_PARM2(x) ((x)->u_regs[UREG_I1])
377#define PT_REGS_PARM3(x) ((x)->u_regs[UREG_I2])
378#define PT_REGS_PARM4(x) ((x)->u_regs[UREG_I3])
379#define PT_REGS_PARM5(x) ((x)->u_regs[UREG_I4])
380#define PT_REGS_RET(x) ((x)->u_regs[UREG_I7])
381#define PT_REGS_RC(x) ((x)->u_regs[UREG_I0])
382#define PT_REGS_SP(x) ((x)->u_regs[UREG_FP])
383
384
385#if defined(__arch64__)
386#define PT_REGS_IP(x) ((x)->tpc)
387#else
388#define PT_REGS_IP(x) ((x)->pc)
389#endif
390
391#endif
392
393#ifdef bpf_target_powerpc
394#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ (ip) = (ctx)->link; })
395#define BPF_KRETPROBE_READ_RET_IP BPF_KPROBE_READ_RET_IP
396#elif bpf_target_sparc
397#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ (ip) = PT_REGS_RET(ctx); })
398#define BPF_KRETPROBE_READ_RET_IP BPF_KPROBE_READ_RET_IP
399#else
400#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ \
401 bpf_probe_read(&(ip), sizeof(ip), (void *)PT_REGS_RET(ctx)); })
402#define BPF_KRETPROBE_READ_RET_IP(ip, ctx) ({ \
403 bpf_probe_read(&(ip), sizeof(ip), \
404 (void *)(PT_REGS_FP(ctx) + sizeof(ip))); })
405#endif
406
407#endif
408
