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a0f66dd
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linux
/
tools
/
testing
/
selftests
/
bpf
/
verifier
/
jset.c
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169 lines (162 loc) · 4.06 KB
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linux
/
tools
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testing
/
selftests
/
bpf
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verifier
/
jset.c
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{ "jset: functional", .insns = { BPF_DIRECT_PKT_R2, BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_2, 0), /* reg, bit 63 or bit 0 set, taken */ BPF_LD_IMM64(BPF_REG_8, 0x8000000000000001), BPF_JMP_REG(BPF_JSET, BPF_REG_7, BPF_REG_8, 1), BPF_EXIT_INSN(), /* reg, bit 62, not taken */ BPF_LD_IMM64(BPF_REG_8, 0x4000000000000000), BPF_JMP_REG(BPF_JSET, BPF_REG_7, BPF_REG_8, 1), BPF_JMP_IMM(BPF_JA, 0, 0, 1), BPF_EXIT_INSN(), /* imm, any bit set, taken */ BPF_JMP_IMM(BPF_JSET, BPF_REG_7, -1, 1), BPF_EXIT_INSN(), /* imm, bit 31 set, taken */ BPF_JMP_IMM(BPF_JSET, BPF_REG_7, 0x80000000, 1), BPF_EXIT_INSN(), /* all good - return r0 == 2 */ BPF_MOV64_IMM(BPF_REG_0, 2), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_SCHED_CLS, .result = ACCEPT, .runs = 7, .retvals = { { .retval = 2, .data64 = { (1ULL << 63) | (1U << 31) | (1U << 0), } }, { .retval = 2, .data64 = { (1ULL << 63) | (1U << 31), } }, { .retval = 2, .data64 = { (1ULL << 31) | (1U << 0), } }, { .retval = 2, .data64 = { (__u32)-1, } }, { .retval = 2, .data64 = { ~0x4000000000000000ULL, } }, { .retval = 0, .data64 = { 0, } }, { .retval = 0, .data64 = { ~0ULL, } }, }, .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, }, { "jset: sign-extend", .insns = { BPF_DIRECT_PKT_R2, BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_2, 0), BPF_JMP_IMM(BPF_JSET, BPF_REG_7, 0x80000000, 1), BPF_EXIT_INSN(), BPF_MOV64_IMM(BPF_REG_0, 2), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_SCHED_CLS, .result = ACCEPT, .retval = 2, .data = { 1, 0, 0, 0, 0, 0, 0, 1, }, .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, }, { "jset: known const compare", .insns = { BPF_MOV64_IMM(BPF_REG_0, 1), BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 1, 1), BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_SOCKET_FILTER, .errstr_unpriv = "R9 !read_ok", .result_unpriv = REJECT, .retval = 1, .result = ACCEPT, }, { "jset: known const compare bad", .insns = { BPF_MOV64_IMM(BPF_REG_0, 0), BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 1, 1), BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_SOCKET_FILTER, .errstr_unpriv = "!read_ok", .result_unpriv = REJECT, .errstr = "!read_ok", .result = REJECT, }, { "jset: unknown const compare taken", .insns = { BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 1, 1), BPF_JMP_IMM(BPF_JA, 0, 0, 1), BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_SOCKET_FILTER, .errstr_unpriv = "!read_ok", .result_unpriv = REJECT, .errstr = "!read_ok", .result = REJECT, }, { "jset: unknown const compare not taken", .insns = { BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 1, 1), BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_SOCKET_FILTER, .errstr_unpriv = "!read_ok", .result_unpriv = REJECT, .errstr = "!read_ok", .result = REJECT, }, { "jset: half-known const compare", .insns = { BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), BPF_ALU64_IMM(BPF_OR, BPF_REG_0, 2), BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 3, 1), BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0), BPF_MOV64_IMM(BPF_REG_0, 0), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_SOCKET_FILTER, .errstr_unpriv = "R9 !read_ok", .result_unpriv = REJECT, .result = ACCEPT, }, { "jset: range", .insns = { BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), BPF_MOV64_IMM(BPF_REG_0, 0), BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xff), BPF_JMP_IMM(BPF_JSET, BPF_REG_1, 0xf0, 3), BPF_JMP_IMM(BPF_JLT, BPF_REG_1, 0x10, 1), BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0), BPF_EXIT_INSN(), BPF_JMP_IMM(BPF_JSET, BPF_REG_1, 0x10, 1), BPF_EXIT_INSN(), BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0x10, 1), BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_SOCKET_FILTER, .errstr_unpriv = "R9 !read_ok", .result_unpriv = REJECT, .result = ACCEPT, },
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