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[213.115.136.2]) by smtp.gmail.com with ESMTPSA id q9sm13937539ejf.70.2021.07.26.01.18.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Jul 2021 01:18:29 -0700 (PDT) From: Johan Almbladh To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org Cc: kafai@fb.com, songliubraving@fb.com, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, Tony.Ambardar@gmail.com, netdev@vger.kernel.org, bpf@vger.kernel.org, Johan Almbladh Subject: [RFC PATCH 01/14] bpf/tests: add BPF_JMP32 test cases Date: Mon, 26 Jul 2021 10:17:25 +0200 Message-Id: <20210726081738.1833704-2-johan.almbladh@anyfinetworks.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210726081738.1833704-1-johan.almbladh@anyfinetworks.com> References: <20210726081738.1833704-1-johan.almbladh@anyfinetworks.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org An eBPF JIT may implement JMP32 operations in a different way than JMP, especially on 32-bit architectures. This patch adds a series of tests for JMP32 operations, mainly for testing JITs. Signed-off-by: Johan Almbladh --- lib/test_bpf.c | 511 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 511 insertions(+) diff --git a/lib/test_bpf.c b/lib/test_bpf.c index f6d5d30d01bf..bfac033db590 100644 --- a/lib/test_bpf.c +++ b/lib/test_bpf.c @@ -4398,6 +4398,517 @@ static struct bpf_test tests[] = { { { 0, 4134 } }, .fill_helper = bpf_fill_stxdw, }, + /* BPF_JMP32 | BPF_JEQ | BPF_K */ + { + "JMP32_JEQ_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 123), + BPF_JMP32_IMM(BPF_JEQ, R0, 321, 1), + BPF_JMP32_IMM(BPF_JEQ, R0, 123, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 123 } } + }, + { + "JMP32_JEQ_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 12345678), + BPF_JMP32_IMM(BPF_JEQ, R0, 12345678 & 0xffff, 1), + BPF_JMP32_IMM(BPF_JEQ, R0, 12345678, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 12345678 } } + }, + { + "JMP32_JEQ_K: negative immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -123), + BPF_JMP32_IMM(BPF_JEQ, R0, 123, 1), + BPF_JMP32_IMM(BPF_JEQ, R0, -123, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -123 } } + }, + /* BPF_JMP32 | BPF_JEQ | BPF_X */ + { + "JMP32_JEQ_X", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 1234), + BPF_ALU32_IMM(BPF_MOV, R1, 4321), + BPF_JMP32_REG(BPF_JEQ, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R1, 1234), + BPF_JMP32_REG(BPF_JEQ, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1234 } } + }, + /* BPF_JMP32 | BPF_JNE | BPF_K */ + { + "JMP32_JNE_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 123), + BPF_JMP32_IMM(BPF_JNE, R0, 123, 1), + BPF_JMP32_IMM(BPF_JNE, R0, 321, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 123 } } + }, + { + "JMP32_JNE_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 12345678), + BPF_JMP32_IMM(BPF_JNE, R0, 12345678, 1), + BPF_JMP32_IMM(BPF_JNE, R0, 12345678 & 0xffff, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 12345678 } } + }, + { + "JMP32_JNE_K: negative immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -123), + BPF_JMP32_IMM(BPF_JNE, R0, -123, 1), + BPF_JMP32_IMM(BPF_JNE, R0, 123, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -123 } } + }, + /* BPF_JMP32 | BPF_JNE | BPF_X */ + { + "JMP32_JNE_X", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 1234), + BPF_ALU32_IMM(BPF_MOV, R1, 1234), + BPF_JMP32_REG(BPF_JNE, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R1, 4321), + BPF_JMP32_REG(BPF_JNE, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1234 } } + }, + /* BPF_JMP32 | BPF_JSET | BPF_K */ + { + "JMP32_JSET_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 1), + BPF_JMP32_IMM(BPF_JSET, R0, 2, 1), + BPF_JMP32_IMM(BPF_JSET, R0, 3, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1 } } + }, + { + "JMP32_JSET_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x40000000), + BPF_JMP32_IMM(BPF_JSET, R0, 0x3fffffff, 1), + BPF_JMP32_IMM(BPF_JSET, R0, 0x60000000, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x40000000 } } + }, + { + "JMP32_JSET_K: negative immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -123), + BPF_JMP32_IMM(BPF_JSET, R0, -1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -123 } } + }, + /* BPF_JMP32 | BPF_JSET | BPF_X */ + { + "JMP32_JSET_X", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 8), + BPF_ALU32_IMM(BPF_MOV, R1, 7), + BPF_JMP32_REG(BPF_JSET, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R1, 8 | 2), + BPF_JMP32_REG(BPF_JNE, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 8 } } + }, + /* BPF_JMP32 | BPF_JGT | BPF_K */ + { + "JMP32_JGT_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 123), + BPF_JMP32_IMM(BPF_JGT, R0, 123, 1), + BPF_JMP32_IMM(BPF_JGT, R0, 122, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 123 } } + }, + { + "JMP32_JGT_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0xfffffffe), + BPF_JMP32_IMM(BPF_JGT, R0, 0xffffffff, 1), + BPF_JMP32_IMM(BPF_JGT, R0, 0xfffffffd, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xfffffffe } } + }, + /* BPF_JMP32 | BPF_JGT | BPF_X */ + { + "JMP32_JGT_X", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0xfffffffe), + BPF_ALU32_IMM(BPF_MOV, R1, 0xffffffff), + BPF_JMP32_REG(BPF_JGT, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R1, 0xfffffffd), + BPF_JMP32_REG(BPF_JGT, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xfffffffe } } + }, + /* BPF_JMP32 | BPF_JGE | BPF_K */ + { + "JMP32_JGE_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 123), + BPF_JMP32_IMM(BPF_JGE, R0, 124, 1), + BPF_JMP32_IMM(BPF_JGE, R0, 123, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 123 } } + }, + { + "JMP32_JGE_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0xfffffffe), + BPF_JMP32_IMM(BPF_JGE, R0, 0xffffffff, 1), + BPF_JMP32_IMM(BPF_JGE, R0, 0xfffffffe, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xfffffffe } } + }, + /* BPF_JMP32 | BPF_JGE | BPF_X */ + { + "JMP32_JGE_X", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0xfffffffe), + BPF_ALU32_IMM(BPF_MOV, R1, 0xffffffff), + BPF_JMP32_REG(BPF_JGE, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R1, 0xfffffffe), + BPF_JMP32_REG(BPF_JGE, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xfffffffe } } + }, + /* BPF_JMP32 | BPF_JLT | BPF_K */ + { + "JMP32_JLT_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 123), + BPF_JMP32_IMM(BPF_JLT, R0, 123, 1), + BPF_JMP32_IMM(BPF_JLT, R0, 124, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 123 } } + }, + { + "JMP32_JLT_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0xfffffffe), + BPF_JMP32_IMM(BPF_JLT, R0, 0xfffffffd, 1), + BPF_JMP32_IMM(BPF_JLT, R0, 0xffffffff, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xfffffffe } } + }, + /* BPF_JMP32 | BPF_JLT | BPF_X */ + { + "JMP32_JLT_X", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0xfffffffe), + BPF_ALU32_IMM(BPF_MOV, R1, 0xfffffffd), + BPF_JMP32_REG(BPF_JLT, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R1, 0xffffffff), + BPF_JMP32_REG(BPF_JLT, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xfffffffe } } + }, + /* BPF_JMP32 | BPF_JLE | BPF_K */ + { + "JMP32_JLE_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 123), + BPF_JMP32_IMM(BPF_JLE, R0, 122, 1), + BPF_JMP32_IMM(BPF_JLE, R0, 123, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 123 } } + }, + { + "JMP32_JLE_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0xfffffffe), + BPF_JMP32_IMM(BPF_JLE, R0, 0xfffffffd, 1), + BPF_JMP32_IMM(BPF_JLE, R0, 0xfffffffe, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xfffffffe } } + }, + /* BPF_JMP32 | BPF_JLE | BPF_X */ + { + "JMP32_JLE_X", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0xfffffffe), + BPF_ALU32_IMM(BPF_MOV, R1, 0xfffffffd), + BPF_JMP32_REG(BPF_JLE, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R1, 0xfffffffe), + BPF_JMP32_REG(BPF_JLE, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xfffffffe } } + }, + /* BPF_JMP32 | BPF_JSGT | BPF_K */ + { + "JMP32_JSGT_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -123), + BPF_JMP32_IMM(BPF_JSGT, R0, -123, 1), + BPF_JMP32_IMM(BPF_JSGT, R0, -124, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -123 } } + }, + { + "JMP32_JSGT_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -12345678), + BPF_JMP32_IMM(BPF_JSGT, R0, -12345678, 1), + BPF_JMP32_IMM(BPF_JSGT, R0, -12345679, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -12345678 } } + }, + /* BPF_JMP32 | BPF_JSGT | BPF_X */ + { + "JMP32_JSGT_X", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -12345678), + BPF_ALU32_IMM(BPF_MOV, R1, -12345678), + BPF_JMP32_REG(BPF_JSGT, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R1, -12345679), + BPF_JMP32_REG(BPF_JSGT, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -12345678 } } + }, + /* BPF_JMP32 | BPF_JSGE | BPF_K */ + { + "JMP32_JSGE_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -123), + BPF_JMP32_IMM(BPF_JSGE, R0, -122, 1), + BPF_JMP32_IMM(BPF_JSGE, R0, -123, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -123 } } + }, + { + "JMP32_JSGE_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -12345678), + BPF_JMP32_IMM(BPF_JSGE, R0, -12345677, 1), + BPF_JMP32_IMM(BPF_JSGE, R0, -12345678, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -12345678 } } + }, + /* BPF_JMP32 | BPF_JSGE | BPF_X */ + { + "JMP32_JSGE_X", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -12345678), + BPF_ALU32_IMM(BPF_MOV, R1, -12345677), + BPF_JMP32_REG(BPF_JSGE, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R1, -12345678), + BPF_JMP32_REG(BPF_JSGE, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -12345678 } } + }, + /* BPF_JMP32 | BPF_JSLT | BPF_K */ + { + "JMP32_JSLT_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -123), + BPF_JMP32_IMM(BPF_JSLT, R0, -123, 1), + BPF_JMP32_IMM(BPF_JSLT, R0, -122, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -123 } } + }, + { + "JMP32_JSLT_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -12345678), + BPF_JMP32_IMM(BPF_JSLT, R0, -12345678, 1), + BPF_JMP32_IMM(BPF_JSLT, R0, -12345677, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -12345678 } } + }, + /* BPF_JMP32 | BPF_JSLT | BPF_X */ + { + "JMP32_JSLT_X", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -12345678), + BPF_ALU32_IMM(BPF_MOV, R1, -12345678), + BPF_JMP32_REG(BPF_JSLT, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R1, -12345677), + BPF_JMP32_REG(BPF_JSLT, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -12345678 } } + }, + /* BPF_JMP32 | BPF_JSLE | BPF_K */ + { + "JMP32_JSLE_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -123), + BPF_JMP32_IMM(BPF_JSLE, R0, -124, 1), + BPF_JMP32_IMM(BPF_JSLE, R0, -123, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -123 } } + }, + { + "JMP32_JSLE_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -12345678), + BPF_JMP32_IMM(BPF_JSLE, R0, -12345679, 1), + BPF_JMP32_IMM(BPF_JSLE, R0, -12345678, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -12345678 } } + }, + /* BPF_JMP32 | BPF_JSLE | BPF_K */ + { + "JMP32_JSLE_X", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -12345678), + BPF_ALU32_IMM(BPF_MOV, R1, -12345679), + BPF_JMP32_REG(BPF_JSLE, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R1, -12345678), + BPF_JMP32_REG(BPF_JSLE, R0, R1, 1), + BPF_ALU32_IMM(BPF_MOV, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -12345678 } } + }, /* BPF_JMP | BPF_EXIT */ { "JMP_EXIT", -- 2.25.1