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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: d5c11870-fb46-448a-697b-08d741a52f2d X-MS-Exchange-CrossTenant-originalarrivaltime: 25 Sep 2019 10:43:21.7336 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 70e1fb47-1155-421d-87fc-2e58f638b6e0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: MtAOuNGsnZO9rlSZKdZMnFcE8VbhJv5IxXNyGcrr6uYgFLLgs32KUdJF8iZdeeq6cCdBPkkb/k58g1gBWcrOrw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR18MB2688 X-OriginatorOrg: marvell.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,1.0.8 definitions=2019-09-25_05:2019-09-23,2019-09-25 signatures=0 Subject: [dpdk-dev] [PATCH v2] test/bpf: add new test cases X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This patch implements following new test cases: - test_call4: test case to verify if stack corruption occurs across with multiple function calls. - test_jump2: test case with a default packet in memory, parse the packet and check if dest ip is part of a subnet. - test_call5: test case with string data in the stack and calling string comaprision. Signed-off-by: Harman Kalra --- V2 Changes: * Maintaining uniformity across the code by using cmp_res rather than individual if statements. app/test/test_bpf.c | 619 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 619 insertions(+) diff --git a/app/test/test_bpf.c b/app/test/test_bpf.c index e8841800a..ee534687a 100644 --- a/app/test/test_bpf.c +++ b/app/test/test_bpf.c @@ -14,6 +14,8 @@ #include #include #include +#include +#include =20 #include "test.h" =20 @@ -35,6 +37,12 @@ struct dummy_vect8 { struct dummy_offset out[8]; }; =20 +struct dummy_net { + struct rte_ether_hdr eth_hdr; + struct rte_vlan_hdr vlan_hdr; + struct rte_ipv4_hdr ip_hdr; +}; + #define TEST_FILL_1 0xDEADBEEF =20 #define TEST_MUL_1 21 @@ -54,6 +62,20 @@ struct dummy_vect8 { #define TEST_IMM_4 ((uint64_t)UINT32_MAX) #define TEST_IMM_5 ((uint64_t)UINT32_MAX + 1) =20 +#define TEST_MEMFROB 0x2a2a2a2a + +#define STRING_GEEK 0x6B656567 +#define STRING_WEEK 0x6B656577 + +#define TEST_NETMASK 0xffffff00 +#define TEST_SUBNET 0xaca80200 + +uint8_t src_mac[] =3D { 0x00, 0xFF, 0xAA, 0xFF, 0xAA, 0xFF }; +uint8_t dst_mac[] =3D { 0x00, 0xAA, 0xFF, 0xAA, 0xFF, 0xAA }; + +uint32_t ip_src_addr =3D (172U << 24) | (168U << 16) | (2 << 8) | 1; +uint32_t ip_dst_addr =3D (172U << 24) | (168U << 16) | (2 << 8) | 2; + struct bpf_test { const char *name; size_t arg_sz; @@ -866,6 +888,171 @@ test_jump1_check(uint64_t rc, const void *arg) return cmp_res(__func__, rv, rc, &rv, &rc, sizeof(rv)); } =20 +/* Jump test case - check ip4_dest in particular subnet */ +static const struct ebpf_insn test_jump2_prog[] =3D { + + [0] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_2, + .imm =3D 0xe, + }, + [1] =3D { + .code =3D (BPF_LDX | BPF_MEM | BPF_H), + .dst_reg =3D EBPF_REG_3, + .src_reg =3D EBPF_REG_1, + .off =3D 12, + }, + [2] =3D { + .code =3D (BPF_JMP | EBPF_JNE | BPF_K), + .dst_reg =3D EBPF_REG_3, + .off =3D 2, + .imm =3D 0x81, + }, + [3] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_2, + .imm =3D 0x12, + }, + [4] =3D { + .code =3D (BPF_LDX | BPF_MEM | BPF_H), + .dst_reg =3D EBPF_REG_3, + .src_reg =3D EBPF_REG_1, + .off =3D 16, + }, + [5] =3D { + .code =3D (EBPF_ALU64 | BPF_AND | BPF_K), + .dst_reg =3D EBPF_REG_3, + .imm =3D 0xffff, + }, + [6] =3D { + .code =3D (BPF_JMP | EBPF_JNE | BPF_K), + .dst_reg =3D EBPF_REG_3, + .off =3D 9, + .imm =3D 0x8, + }, + [7] =3D { + .code =3D (EBPF_ALU64 | BPF_ADD | BPF_X), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_2, + }, + [8] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_0, + .imm =3D 0, + }, + [9] =3D { + .code =3D (BPF_LDX | BPF_MEM | BPF_W), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_1, + .off =3D 16, + }, + [10] =3D { + .code =3D (BPF_ALU | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_3, + .imm =3D TEST_NETMASK, + }, + [11] =3D { + .code =3D (BPF_ALU | EBPF_END | EBPF_TO_BE), + .dst_reg =3D EBPF_REG_3, + .imm =3D sizeof(uint32_t) * CHAR_BIT, + }, + [12] =3D { + .code =3D (BPF_ALU | BPF_AND | BPF_X), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_3, + }, + [13] =3D { + .code =3D (BPF_ALU | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_3, + .imm =3D TEST_SUBNET, + }, + [14] =3D { + .code =3D (BPF_ALU | EBPF_END | EBPF_TO_BE), + .dst_reg =3D EBPF_REG_3, + .imm =3D sizeof(uint32_t) * CHAR_BIT, + }, + [15] =3D { + .code =3D (BPF_JMP | BPF_JEQ | BPF_X), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_3, + .off =3D 1, + }, + [16] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_0, + .imm =3D -1, + }, + [17] =3D { + .code =3D (BPF_JMP | EBPF_EXIT), + }, +}; + +/* Preparing a vlan packet */ +static void +test_jump2_prepare(void *arg) +{ + struct dummy_net *dn; + + dn =3D arg; + memset(dn, 0, sizeof(*dn)); + + /* + * Initialize ether header. + */ + rte_ether_addr_copy((struct rte_ether_addr *)dst_mac, + &dn->eth_hdr.d_addr); + rte_ether_addr_copy((struct rte_ether_addr *)src_mac, + &dn->eth_hdr.s_addr); + dn->eth_hdr.ether_type =3D rte_cpu_to_be_16(RTE_ETHER_TYPE_VLAN); + + /* + * Initialize vlan header. + */ + dn->vlan_hdr.eth_proto =3D rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4); + dn->vlan_hdr.vlan_tci =3D 32; + + /* + * Initialize IP header. + */ + dn->ip_hdr.version_ihl =3D 0x45; /*IP_VERSION | IP_HDRLEN*/ + dn->ip_hdr.time_to_live =3D 64; /* IP_DEFTTL */ + dn->ip_hdr.next_proto_id =3D IPPROTO_TCP; + dn->ip_hdr.packet_id =3D rte_cpu_to_be_16(0x463c); + dn->ip_hdr.total_length =3D rte_cpu_to_be_16(60); + dn->ip_hdr.src_addr =3D rte_cpu_to_be_32(ip_src_addr); + dn->ip_hdr.dst_addr =3D rte_cpu_to_be_32(ip_dst_addr); +} + +static int +test_jump2_check(uint64_t rc, const void *arg) +{ + const struct rte_ether_hdr *eth_hdr =3D arg; + const struct rte_ipv4_hdr *ipv4_hdr; + const void *next =3D eth_hdr; + uint16_t eth_type; + uint64_t v =3D -1; + + if (eth_hdr->ether_type =3D=3D htons(0x8100)) { + const struct rte_vlan_hdr *vlan_hdr =3D + (const void *)(eth_hdr + 1); + eth_type =3D vlan_hdr->eth_proto; + next =3D vlan_hdr + 1; + } else { + eth_type =3D eth_hdr->ether_type; + next =3D eth_hdr + 1; + } + + if (eth_type =3D=3D htons(0x0800)) { + ipv4_hdr =3D next; + if ((ipv4_hdr->dst_addr & rte_cpu_to_be_32(TEST_NETMASK)) =3D=3D + rte_cpu_to_be_32(TEST_SUBNET)) { + v =3D 0; + } + } + + return cmp_res(__func__, v, rc, arg, arg, sizeof(arg)); +} + /* alu (add, sub, and, or, xor, neg) test-cases */ static const struct ebpf_insn test_alu1_prog[] =3D { =20 @@ -1889,6 +2076,388 @@ static const struct rte_bpf_xsym test_call3_xsym[] = =3D { }, }; =20 +/* Test for stack corruption in multiple function calls */ +static const struct ebpf_insn test_call4_prog[] =3D { + { + .code =3D (BPF_ST | BPF_MEM | BPF_B), + .dst_reg =3D EBPF_REG_10, + .off =3D -4, + .imm =3D 1, + }, + { + .code =3D (BPF_ST | BPF_MEM | BPF_B), + .dst_reg =3D EBPF_REG_10, + .off =3D -3, + .imm =3D 2, + }, + { + .code =3D (BPF_ST | BPF_MEM | BPF_B), + .dst_reg =3D EBPF_REG_10, + .off =3D -2, + .imm =3D 3, + }, + { + .code =3D (BPF_ST | BPF_MEM | BPF_B), + .dst_reg =3D EBPF_REG_10, + .off =3D -1, + .imm =3D 4, + }, + { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_X), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_10, + }, + { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_2, + .imm =3D 4, + }, + { + .code =3D (EBPF_ALU64 | BPF_SUB | BPF_X), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_2, + }, + { + .code =3D (BPF_JMP | EBPF_CALL), + .imm =3D 0, + }, + { + .code =3D (BPF_LDX | BPF_MEM | BPF_B), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_10, + .off =3D -4, + }, + { + .code =3D (BPF_LDX | BPF_MEM | BPF_B), + .dst_reg =3D EBPF_REG_2, + .src_reg =3D EBPF_REG_10, + .off =3D -3, + }, + { + .code =3D (BPF_LDX | BPF_MEM | BPF_B), + .dst_reg =3D EBPF_REG_3, + .src_reg =3D EBPF_REG_10, + .off =3D -2, + }, + { + .code =3D (BPF_LDX | BPF_MEM | BPF_B), + .dst_reg =3D EBPF_REG_4, + .src_reg =3D EBPF_REG_10, + .off =3D -1, + }, + { + .code =3D (BPF_JMP | EBPF_CALL), + .imm =3D 1, + }, + { + .code =3D (EBPF_ALU64 | BPF_XOR | BPF_K), + .dst_reg =3D EBPF_REG_0, + .imm =3D TEST_MEMFROB, + }, + { + .code =3D (BPF_JMP | EBPF_EXIT), + }, +}; + +/* Gathering the bytes together */ +static uint32_t +dummy_func4_1(uint8_t a, uint8_t b, uint8_t c, uint8_t d) +{ + return (a << 24) | (b << 16) | (c << 8) | (d << 0); +} + +/* Implementation of memfrob */ +static uint32_t +dummy_func4_0(uint32_t *s, uint8_t n) +{ + char *p =3D (char *) s; + while (n-- > 0) + *p++ ^=3D 42; + return *s; +} + + +static int +test_call4_check(uint64_t rc, const void *arg) +{ + uint8_t a[4] =3D {1, 2, 3, 4}; + uint32_t s, v =3D 0; + + RTE_SET_USED(arg); + + s =3D dummy_func4_0((uint32_t *)a, 4); + + s =3D dummy_func4_1(a[0], a[1], a[2], a[3]); + + v =3D s ^ TEST_MEMFROB; + + return cmp_res(__func__, v, rc, &v, &rc, sizeof(v)); +} + +static const struct rte_bpf_xsym test_call4_xsym[] =3D { + [0] =3D { + .name =3D RTE_STR(dummy_func4_0), + .type =3D RTE_BPF_XTYPE_FUNC, + .func =3D { + .val =3D (void *)dummy_func4_0, + .nb_args =3D 2, + .args =3D { + [0] =3D { + .type =3D RTE_BPF_ARG_PTR, + .size =3D 4 * sizeof(uint8_t), + }, + [1] =3D { + .type =3D RTE_BPF_ARG_RAW, + .size =3D sizeof(uint8_t), + }, + }, + .ret =3D { + .type =3D RTE_BPF_ARG_RAW, + .size =3D sizeof(uint32_t), + }, + }, + }, + [1] =3D { + .name =3D RTE_STR(dummy_func4_1), + .type =3D RTE_BPF_XTYPE_FUNC, + .func =3D { + .val =3D (void *)dummy_func4_1, + .nb_args =3D 4, + .args =3D { + [0] =3D { + .type =3D RTE_BPF_ARG_RAW, + .size =3D sizeof(uint8_t), + }, + [1] =3D { + .type =3D RTE_BPF_ARG_RAW, + .size =3D sizeof(uint8_t), + }, + [2] =3D { + .type =3D RTE_BPF_ARG_RAW, + .size =3D sizeof(uint8_t), + }, + [3] =3D { + .type =3D RTE_BPF_ARG_RAW, + .size =3D sizeof(uint8_t), + }, + }, + .ret =3D { + .type =3D RTE_BPF_ARG_RAW, + .size =3D sizeof(uint32_t), + }, + }, + }, +}; + +/* string compare test case */ +static const struct ebpf_insn test_call5_prog[] =3D { + + [0] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_1, + .imm =3D STRING_GEEK, + }, + [1] =3D { + .code =3D (BPF_STX | BPF_MEM | BPF_W), + .dst_reg =3D EBPF_REG_10, + .src_reg =3D EBPF_REG_1, + .off =3D -8, + }, + [2] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_6, + .imm =3D 0, + }, + [3] =3D { + .code =3D (BPF_STX | BPF_MEM | BPF_B), + .dst_reg =3D EBPF_REG_10, + .src_reg =3D EBPF_REG_6, + .off =3D -4, + }, + [4] =3D { + .code =3D (BPF_STX | BPF_MEM | BPF_W), + .dst_reg =3D EBPF_REG_10, + .src_reg =3D EBPF_REG_6, + .off =3D -12, + }, + [5] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_1, + .imm =3D STRING_WEEK, + }, + [6] =3D { + .code =3D (BPF_STX | BPF_MEM | BPF_W), + .dst_reg =3D EBPF_REG_10, + .src_reg =3D EBPF_REG_1, + .off =3D -16, + }, + [7] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_X), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_10, + }, + [8] =3D { + .code =3D (EBPF_ALU64 | BPF_ADD | BPF_K), + .dst_reg =3D EBPF_REG_1, + .imm =3D -8, + }, + [9] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_X), + .dst_reg =3D EBPF_REG_2, + .src_reg =3D EBPF_REG_1, + }, + [10] =3D { + .code =3D (BPF_JMP | EBPF_CALL), + .imm =3D 0, + }, + [11] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_X), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_0, + }, + [12] =3D { + .code =3D (BPF_ALU | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_0, + .imm =3D -1, + }, + [13] =3D { + .code =3D (EBPF_ALU64 | BPF_LSH | BPF_K), + .dst_reg =3D EBPF_REG_1, + .imm =3D 0x20, + }, + [14] =3D { + .code =3D (EBPF_ALU64 | BPF_RSH | BPF_K), + .dst_reg =3D EBPF_REG_1, + .imm =3D 0x20, + }, + [15] =3D { + .code =3D (BPF_JMP | EBPF_JNE | BPF_K), + .dst_reg =3D EBPF_REG_1, + .off =3D 11, + .imm =3D 0, + }, + [16] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_X), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_10, + }, + [17] =3D { + .code =3D (EBPF_ALU64 | BPF_ADD | BPF_K), + .dst_reg =3D EBPF_REG_1, + .imm =3D -8, + }, + [18] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_X), + .dst_reg =3D EBPF_REG_2, + .src_reg =3D EBPF_REG_10, + }, + [19] =3D { + .code =3D (EBPF_ALU64 | BPF_ADD | BPF_K), + .dst_reg =3D EBPF_REG_2, + .imm =3D -16, + }, + [20] =3D { + .code =3D (BPF_JMP | EBPF_CALL), + .imm =3D 0, + }, + [21] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_X), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_0, + }, + [22] =3D { + .code =3D (EBPF_ALU64 | BPF_LSH | BPF_K), + .dst_reg =3D EBPF_REG_1, + .imm =3D 0x20, + }, + [23] =3D { + .code =3D (EBPF_ALU64 | BPF_RSH | BPF_K), + .dst_reg =3D EBPF_REG_1, + .imm =3D 0x20, + }, + [24] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_X), + .dst_reg =3D EBPF_REG_0, + .src_reg =3D EBPF_REG_1, + }, + [25] =3D { + .code =3D (BPF_JMP | BPF_JEQ | BPF_X), + .dst_reg =3D EBPF_REG_1, + .src_reg =3D EBPF_REG_6, + .off =3D 1, + }, + [26] =3D { + .code =3D (EBPF_ALU64 | EBPF_MOV | BPF_K), + .dst_reg =3D EBPF_REG_0, + .imm =3D 0, + }, + [27] =3D { + .code =3D (BPF_JMP | EBPF_EXIT), + }, +}; + +/* String comparision impelementation, return 0 if equal else difference *= / +static uint32_t +dummy_func5(const char *s1, const char *s2) +{ + while (*s1 && (*s1 =3D=3D *s2)) { + s1++; + s2++; + } + return *(const unsigned char *)s1 - *(const unsigned char *)s2; +} + +static int +test_call5_check(uint64_t rc, const void *arg) +{ + char a[] =3D "geek"; + char b[] =3D "week"; + uint32_t v; + + RTE_SET_USED(arg); + + v =3D dummy_func5(a, a); + if (v !=3D 0) { + v =3D -1; + goto fail; + } + + v =3D dummy_func5(a, b); + if (v =3D=3D 0) + goto fail; + + v =3D 0; + +fail: + + return cmp_res(__func__, v, rc, &v, &rc, sizeof(v)); +} + +static const struct rte_bpf_xsym test_call5_xsym[] =3D { + [0] =3D { + .name =3D RTE_STR(dummy_func5), + .type =3D RTE_BPF_XTYPE_FUNC, + .func =3D { + .val =3D (void *)dummy_func5, + .nb_args =3D 2, + .args =3D { + [0] =3D { + .type =3D RTE_BPF_ARG_PTR, + .size =3D sizeof(char), + }, + [1] =3D { + .type =3D RTE_BPF_ARG_PTR, + .size =3D sizeof(char), + }, + }, + .ret =3D { + .type =3D RTE_BPF_ARG_RAW, + .size =3D sizeof(uint32_t), + }, + }, + }, +}; + static const struct bpf_test tests[] =3D { { .name =3D "test_store1", @@ -1988,6 +2557,20 @@ static const struct bpf_test tests[] =3D { .prepare =3D test_jump1_prepare, .check_result =3D test_jump1_check, }, + { + .name =3D "test_jump2", + .arg_sz =3D sizeof(struct dummy_net), + .prm =3D { + .ins =3D test_jump2_prog, + .nb_ins =3D RTE_DIM(test_jump2_prog), + .prog_arg =3D { + .type =3D RTE_BPF_ARG_PTR, + .size =3D sizeof(struct dummy_net), + }, + }, + .prepare =3D test_jump2_prepare, + .check_result =3D test_jump2_check, + }, { .name =3D "test_alu1", .arg_sz =3D sizeof(struct dummy_vect8), @@ -2098,6 +2681,42 @@ static const struct bpf_test tests[] =3D { /* for now don't support function calls on 32 bit platform */ .allow_fail =3D (sizeof(uint64_t) !=3D sizeof(uintptr_t)), }, + { + .name =3D "test_call4", + .arg_sz =3D sizeof(struct dummy_offset), + .prm =3D { + .ins =3D test_call4_prog, + .nb_ins =3D RTE_DIM(test_call4_prog), + .prog_arg =3D { + .type =3D RTE_BPF_ARG_PTR, + .size =3D 2 * sizeof(struct dummy_offset), + }, + .xsym =3D test_call4_xsym, + .nb_xsym =3D RTE_DIM(test_call4_xsym), + }, + .prepare =3D test_store1_prepare, + .check_result =3D test_call4_check, + /* for now don't support function calls on 32 bit platform */ + .allow_fail =3D (sizeof(uint64_t) !=3D sizeof(uintptr_t)), + }, + { + .name =3D "test_call5", + .arg_sz =3D sizeof(struct dummy_offset), + .prm =3D { + .ins =3D test_call5_prog, + .nb_ins =3D RTE_DIM(test_call5_prog), + .prog_arg =3D { + .type =3D RTE_BPF_ARG_PTR, + .size =3D sizeof(struct dummy_offset), + }, + .xsym =3D test_call5_xsym, + .nb_xsym =3D RTE_DIM(test_call5_xsym), + }, + .prepare =3D test_store1_prepare, + .check_result =3D test_call5_check, + /* for now don't support function calls on 32 bit platform */ + .allow_fail =3D (sizeof(uint64_t) !=3D sizeof(uintptr_t)), + }, }; =20 static int --=20 2.18.0