1/* instructions used to output a skb based software event, produced
2 * from code snippet:
3 * struct TMP {
4 *  uint64_t tmp;
5 * } tt;
6 * tt.tmp = 5;
7 * bpf_perf_event_output(skb, &connection_tracking_event_map, 0,
8 *			 &tt, sizeof(tt));
9 * return 1;
10 *
11 * the bpf assembly from llvm is:
12 *        0:       b7 02 00 00 05 00 00 00         r2 = 5
13 *        1:       7b 2a f8 ff 00 00 00 00         *(u64 *)(r10 - 8) = r2
14 *        2:       bf a4 00 00 00 00 00 00         r4 = r10
15 *        3:       07 04 00 00 f8 ff ff ff         r4 += -8
16 *        4:       18 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00    r2 = 0ll
17 *        6:       b7 03 00 00 00 00 00 00         r3 = 0
18 *        7:       b7 05 00 00 08 00 00 00         r5 = 8
19 *        8:       85 00 00 00 19 00 00 00         call 25
20 *        9:       b7 00 00 00 01 00 00 00         r0 = 1
21 *       10:       95 00 00 00 00 00 00 00         exit
22 *
23 *     The reason I put the code here instead of fill_helpers is that map fixup
24 *     is against the insns, instead of filled prog.
25 */
26
27#define __PERF_EVENT_INSNS__					\
28	BPF_MOV64_IMM(BPF_REG_2, 5),				\
29	BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_2, -8),		\
30	BPF_MOV64_REG(BPF_REG_4, BPF_REG_10),			\
31	BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8),			\
32	BPF_LD_MAP_FD(BPF_REG_2, 0),				\
33	BPF_MOV64_IMM(BPF_REG_3, 0),				\
34	BPF_MOV64_IMM(BPF_REG_5, 8),				\
35	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,		\
36		     BPF_FUNC_perf_event_output),		\
37	BPF_MOV64_IMM(BPF_REG_0, 1),				\
38	BPF_EXIT_INSN(),
39{
40	"perfevent for sockops",
41	.insns = { __PERF_EVENT_INSNS__ },
42	.prog_type = BPF_PROG_TYPE_SOCK_OPS,
43	.fixup_map_event_output = { 4 },
44	.result = ACCEPT,
45	.retval = 1,
46},
47{
48	"perfevent for tc",
49	.insns =  { __PERF_EVENT_INSNS__ },
50	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
51	.fixup_map_event_output = { 4 },
52	.result = ACCEPT,
53	.retval = 1,
54},
55{
56	"perfevent for lwt out",
57	.insns =  { __PERF_EVENT_INSNS__ },
58	.prog_type = BPF_PROG_TYPE_LWT_OUT,
59	.fixup_map_event_output = { 4 },
60	.result = ACCEPT,
61	.retval = 1,
62},
63{
64	"perfevent for xdp",
65	.insns =  { __PERF_EVENT_INSNS__ },
66	.prog_type = BPF_PROG_TYPE_XDP,
67	.fixup_map_event_output = { 4 },
68	.result = ACCEPT,
69	.retval = 1,
70},
71{
72	"perfevent for socket filter",
73	.insns =  { __PERF_EVENT_INSNS__ },
74	.prog_type = BPF_PROG_TYPE_SOCKET_FILTER,
75	.fixup_map_event_output = { 4 },
76	.result = ACCEPT,
77	.retval = 1,
78},
79{
80	"perfevent for sk_skb",
81	.insns =  { __PERF_EVENT_INSNS__ },
82	.prog_type = BPF_PROG_TYPE_SK_SKB,
83	.fixup_map_event_output = { 4 },
84	.result = ACCEPT,
85	.retval = 1,
86},
87{
88	"perfevent for cgroup skb",
89	.insns =  { __PERF_EVENT_INSNS__ },
90	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
91	.fixup_map_event_output = { 4 },
92	.result = ACCEPT,
93	.retval = 1,
94},
95{
96	"perfevent for cgroup dev",
97	.insns =  { __PERF_EVENT_INSNS__ },
98	.prog_type = BPF_PROG_TYPE_CGROUP_DEVICE,
99	.fixup_map_event_output = { 4 },
100	.result = ACCEPT,
101	.retval = 1,
102},
103{
104	"perfevent for cgroup sysctl",
105	.insns =  { __PERF_EVENT_INSNS__ },
106	.prog_type = BPF_PROG_TYPE_CGROUP_SYSCTL,
107	.fixup_map_event_output = { 4 },
108	.result = ACCEPT,
109	.retval = 1,
110},
111{
112	"perfevent for cgroup sockopt",
113	.insns =  { __PERF_EVENT_INSNS__ },
114	.prog_type = BPF_PROG_TYPE_CGROUP_SOCKOPT,
115	.expected_attach_type = BPF_CGROUP_SETSOCKOPT,
116	.fixup_map_event_output = { 4 },
117	.result = ACCEPT,
118	.retval = 1,
119},
120