Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1{
2 "jset: functional",
3 .insns = {
4 BPF_DIRECT_PKT_R2,
5 BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_2, 0),
6
7 /* reg, bit 63 or bit 0 set, taken */
8 BPF_LD_IMM64(BPF_REG_8, 0x8000000000000001),
9 BPF_JMP_REG(BPF_JSET, BPF_REG_7, BPF_REG_8, 1),
10 BPF_EXIT_INSN(),
11
12 /* reg, bit 62, not taken */
13 BPF_LD_IMM64(BPF_REG_8, 0x4000000000000000),
14 BPF_JMP_REG(BPF_JSET, BPF_REG_7, BPF_REG_8, 1),
15 BPF_JMP_IMM(BPF_JA, 0, 0, 1),
16 BPF_EXIT_INSN(),
17
18 /* imm, any bit set, taken */
19 BPF_JMP_IMM(BPF_JSET, BPF_REG_7, -1, 1),
20 BPF_EXIT_INSN(),
21
22 /* imm, bit 31 set, taken */
23 BPF_JMP_IMM(BPF_JSET, BPF_REG_7, 0x80000000, 1),
24 BPF_EXIT_INSN(),
25
26 /* all good - return r0 == 2 */
27 BPF_MOV64_IMM(BPF_REG_0, 2),
28 BPF_EXIT_INSN(),
29 },
30 .prog_type = BPF_PROG_TYPE_SCHED_CLS,
31 .result = ACCEPT,
32 .runs = 7,
33 .retvals = {
34 { .retval = 2,
35 .data64 = { (1ULL << 63) | (1U << 31) | (1U << 0), }
36 },
37 { .retval = 2,
38 .data64 = { (1ULL << 63) | (1U << 31), }
39 },
40 { .retval = 2,
41 .data64 = { (1ULL << 31) | (1U << 0), }
42 },
43 { .retval = 2,
44 .data64 = { (__u32)-1, }
45 },
46 { .retval = 2,
47 .data64 = { ~0x4000000000000000ULL, }
48 },
49 { .retval = 0,
50 .data64 = { 0, }
51 },
52 { .retval = 0,
53 .data64 = { ~0ULL, }
54 },
55 },
56 .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
57},
58{
59 "jset: sign-extend",
60 .insns = {
61 BPF_DIRECT_PKT_R2,
62 BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_2, 0),
63
64 BPF_JMP_IMM(BPF_JSET, BPF_REG_7, 0x80000000, 1),
65 BPF_EXIT_INSN(),
66
67 BPF_MOV64_IMM(BPF_REG_0, 2),
68 BPF_EXIT_INSN(),
69 },
70 .prog_type = BPF_PROG_TYPE_SCHED_CLS,
71 .result = ACCEPT,
72 .retval = 2,
73 .data = { 1, 0, 0, 0, 0, 0, 0, 1, },
74 .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
75},
76{
77 "jset: known const compare",
78 .insns = {
79 BPF_MOV64_IMM(BPF_REG_0, 1),
80 BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 1, 1),
81 /* unpriv: nospec (inserted to prevent "R9 !read_ok") */
82 BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0),
83 BPF_EXIT_INSN(),
84 },
85 .prog_type = BPF_PROG_TYPE_SOCKET_FILTER,
86 .retval = 1,
87 .result = ACCEPT,
88},
89{
90 "jset: known const compare bad",
91 .insns = {
92 BPF_MOV64_IMM(BPF_REG_0, 0),
93 BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 1, 1),
94 BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0),
95 BPF_EXIT_INSN(),
96 },
97 .prog_type = BPF_PROG_TYPE_SOCKET_FILTER,
98 .errstr_unpriv = "!read_ok",
99 .result_unpriv = REJECT,
100 .errstr = "!read_ok",
101 .result = REJECT,
102},
103{
104 "jset: unknown const compare taken",
105 .insns = {
106 BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
107 BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 1, 1),
108 BPF_JMP_IMM(BPF_JA, 0, 0, 1),
109 BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0),
110 BPF_EXIT_INSN(),
111 },
112 .prog_type = BPF_PROG_TYPE_SOCKET_FILTER,
113 .errstr_unpriv = "!read_ok",
114 .result_unpriv = REJECT,
115 .errstr = "!read_ok",
116 .result = REJECT,
117},
118{
119 "jset: unknown const compare not taken",
120 .insns = {
121 BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
122 BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 1, 1),
123 BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0),
124 BPF_EXIT_INSN(),
125 },
126 .prog_type = BPF_PROG_TYPE_SOCKET_FILTER,
127 .errstr_unpriv = "!read_ok",
128 .result_unpriv = REJECT,
129 .errstr = "!read_ok",
130 .result = REJECT,
131},
132{
133 "jset: half-known const compare",
134 .insns = {
135 BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
136 BPF_ALU64_IMM(BPF_OR, BPF_REG_0, 2),
137 BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 3, 1),
138 /* unpriv: nospec (inserted to prevent "R9 !read_ok") */
139 BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0),
140 BPF_MOV64_IMM(BPF_REG_0, 0),
141 BPF_EXIT_INSN(),
142 },
143 .prog_type = BPF_PROG_TYPE_SOCKET_FILTER,
144 .result = ACCEPT,
145},
146{
147 "jset: range",
148 .insns = {
149 BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
150 BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
151 BPF_MOV64_IMM(BPF_REG_0, 0),
152 BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xff),
153 BPF_JMP_IMM(BPF_JSET, BPF_REG_1, 0xf0, 3),
154 BPF_JMP_IMM(BPF_JLT, BPF_REG_1, 0x10, 1),
155 /* unpriv: nospec (inserted to prevent "R9 !read_ok") */
156 BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0),
157 BPF_EXIT_INSN(),
158 BPF_JMP_IMM(BPF_JSET, BPF_REG_1, 0x10, 1),
159 BPF_EXIT_INSN(),
160 BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0x10, 1),
161 /* unpriv: nospec (inserted to prevent "R9 !read_ok") */
162 BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0),
163 BPF_EXIT_INSN(),
164 },
165 .prog_type = BPF_PROG_TYPE_SOCKET_FILTER,
166 .result = ACCEPT,
167},