Move all BPF_CGROUP_INET6_POST_BIND and BPF_CGROUP_INET4_POST_BIND test
cases to a new prog_test, prog_tests/sock_post_bind.c, except for
LOAD_REJECT test cases.
Signed-off-by: Jordan Rife <jrife@xxxxxxxxxx>
---
.../selftests/bpf/prog_tests/sock_post_bind.c | 428 ++++++++++++++++++
tools/testing/selftests/bpf/test_sock.c | 245 ----------
2 files changed, 428 insertions(+), 245 deletions(-)
create mode 100644 tools/testing/selftests/bpf/prog_tests/sock_post_bind.c
diff --git a/tools/testing/selftests/bpf/prog_tests/sock_post_bind.c b/tools/testing/selftests/bpf/prog_tests/sock_post_bind.c
new file mode 100644
index 000000000000..7edcd8caada0
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/sock_post_bind.c
@@ -0,0 +1,428 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/bpf.h>
+#include <test_progs.h>
+#include "cgroup_helpers.h"
+
+#define TEST_NS "sock_post_bind"
+
+static char bpf_log_buf[4096];
+
+static struct sock_post_bind_test {
+ const char *descr;
+ /* BPF prog properties */
+ const struct bpf_insn insns[64];
+ enum bpf_attach_type attach_type;
+ enum bpf_attach_type expected_attach_type;
+ /* Socket properties */
+ int domain;
+ int type;
+ /* Endpoint to bind() to */
+ const char *ip;
+ unsigned short port;
+ unsigned short port_retry;
+
+ /* Expected test result */
+ enum {
+ ATTACH_REJECT,
+ BIND_REJECT,
+ SUCCESS,
+ RETRY_SUCCESS,
+ RETRY_REJECT
+ } result;
+} tests[] = {
+ {
+ .descr = "attach type mismatch bind4 vs bind6",
+ .insns = {
+ BPF_MOV64_IMM(BPF_REG_0, 1),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .attach_type = BPF_CGROUP_INET6_POST_BIND,
+ .result = ATTACH_REJECT,
+ },
+ {
+ .descr = "attach type mismatch bind6 vs bind4",
+ .insns = {
+ BPF_MOV64_IMM(BPF_REG_0, 1),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
+ .attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .result = ATTACH_REJECT,
+ },
+ {
+ .descr = "attach type mismatch default vs bind4",
+ .insns = {
+ BPF_MOV64_IMM(BPF_REG_0, 1),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = 0,
+ .attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .result = ATTACH_REJECT,
+ },
+ {
+ .descr = "attach type mismatch bind6 vs sock_create",
+ .insns = {
+ BPF_MOV64_IMM(BPF_REG_0, 1),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
+ .attach_type = BPF_CGROUP_INET_SOCK_CREATE,
+ .result = ATTACH_REJECT,
+ },
+ {
+ .descr = "bind4 reject all",
+ .insns = {
+ BPF_MOV64_IMM(BPF_REG_0, 0),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .domain = AF_INET,
+ .type = SOCK_STREAM,
+ .ip = "0.0.0.0",
+ .result = BIND_REJECT,
+ },
+ {
+ .descr = "bind6 reject all",
+ .insns = {
+ BPF_MOV64_IMM(BPF_REG_0, 0),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
+ .attach_type = BPF_CGROUP_INET6_POST_BIND,
+ .domain = AF_INET6,
+ .type = SOCK_STREAM,
+ .ip = "::",
+ .result = BIND_REJECT,
+ },
+ {
+ .descr = "bind6 deny specific IP & port",
+ .insns = {
+ BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
+
+ /* if (ip == expected && port == expected) */
+ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
+ offsetof(struct bpf_sock, src_ip6[3])),
+ BPF_JMP_IMM(BPF_JNE, BPF_REG_7,
+ __bpf_constant_ntohl(0x00000001), 4),
+ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
+ offsetof(struct bpf_sock, src_port)),
+ BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x2001, 2),
+
+ /* return DENY; */
+ BPF_MOV64_IMM(BPF_REG_0, 0),
+ BPF_JMP_A(1),
+
+ /* else return ALLOW; */
+ BPF_MOV64_IMM(BPF_REG_0, 1),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
+ .attach_type = BPF_CGROUP_INET6_POST_BIND,
+ .domain = AF_INET6,
+ .type = SOCK_STREAM,
+ .ip = "::1",
+ .port = 8193,
+ .result = BIND_REJECT,
+ },
+ {
+ .descr = "bind4 allow specific IP & port",
+ .insns = {
+ BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
+
+ /* if (ip == expected && port == expected) */
+ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
+ offsetof(struct bpf_sock, src_ip4)),
+ BPF_JMP_IMM(BPF_JNE, BPF_REG_7,
+ __bpf_constant_ntohl(0x7F000001), 4),
+ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
+ offsetof(struct bpf_sock, src_port)),
+ BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2),
+
+ /* return ALLOW; */
+ BPF_MOV64_IMM(BPF_REG_0, 1),
+ BPF_JMP_A(1),
+
+ /* else return DENY; */
+ BPF_MOV64_IMM(BPF_REG_0, 0),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .domain = AF_INET,
+ .type = SOCK_STREAM,
+ .ip = "127.0.0.1",
+ .port = 4098,
+ .result = SUCCESS,
+ },
+ {
+ .descr = "bind4 deny specific IP & port of TCP, and retry",
+ .insns = {
+ BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
+
+ /* if (ip == expected && port == expected) */
+ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
+ offsetof(struct bpf_sock, src_ip4)),
+ BPF_JMP_IMM(BPF_JNE, BPF_REG_7,
+ __bpf_constant_ntohl(0x7F000001), 4),
+ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
+ offsetof(struct bpf_sock, src_port)),
+ BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2),
+
+ /* return DENY; */
+ BPF_MOV64_IMM(BPF_REG_0, 0),
+ BPF_JMP_A(1),
+
+ /* else return ALLOW; */
+ BPF_MOV64_IMM(BPF_REG_0, 1),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .domain = AF_INET,
+ .type = SOCK_STREAM,
+ .ip = "127.0.0.1",
+ .port = 4098,
+ .port_retry = 5000,
+ .result = RETRY_SUCCESS,
+ },
+ {
+ .descr = "bind4 deny specific IP & port of UDP, and retry",
+ .insns = {
+ BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
+
+ /* if (ip == expected && port == expected) */
+ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
+ offsetof(struct bpf_sock, src_ip4)),
+ BPF_JMP_IMM(BPF_JNE, BPF_REG_7,
+ __bpf_constant_ntohl(0x7F000001), 4),
+ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
+ offsetof(struct bpf_sock, src_port)),
+ BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2),
+
+ /* return DENY; */
+ BPF_MOV64_IMM(BPF_REG_0, 0),
+ BPF_JMP_A(1),
+
+ /* else return ALLOW; */
+ BPF_MOV64_IMM(BPF_REG_0, 1),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .domain = AF_INET,
+ .type = SOCK_DGRAM,
+ .ip = "127.0.0.1",
+ .port = 4098,
+ .port_retry = 5000,
+ .result = RETRY_SUCCESS,
+ },
+ {
+ .descr = "bind6 deny specific IP & port, and retry",
+ .insns = {
+ BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
+
+ /* if (ip == expected && port == expected) */
+ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
+ offsetof(struct bpf_sock, src_ip6[3])),
+ BPF_JMP_IMM(BPF_JNE, BPF_REG_7,
+ __bpf_constant_ntohl(0x00000001), 4),
+ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
+ offsetof(struct bpf_sock, src_port)),
+ BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x2001, 2),
+
+ /* return DENY; */
+ BPF_MOV64_IMM(BPF_REG_0, 0),
+ BPF_JMP_A(1),
+
+ /* else return ALLOW; */
+ BPF_MOV64_IMM(BPF_REG_0, 1),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
+ .attach_type = BPF_CGROUP_INET6_POST_BIND,
+ .domain = AF_INET6,
+ .type = SOCK_STREAM,
+ .ip = "::1",
+ .port = 8193,
+ .port_retry = 9000,
+ .result = RETRY_SUCCESS,
+ },
+ {
+ .descr = "bind4 allow all",
+ .insns = {
+ BPF_MOV64_IMM(BPF_REG_0, 1),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .attach_type = BPF_CGROUP_INET4_POST_BIND,
+ .domain = AF_INET,
+ .type = SOCK_STREAM,
+ .ip = "0.0.0.0",
+ .result = SUCCESS,
+ },
+ {
+ .descr = "bind6 allow all",
+ .insns = {
+ BPF_MOV64_IMM(BPF_REG_0, 1),
+ BPF_EXIT_INSN(),
+ },
+ .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
+ .attach_type = BPF_CGROUP_INET6_POST_BIND,
+ .domain = AF_INET6,
+ .type = SOCK_STREAM,
+ .ip = "::",
+ .result = SUCCESS,
+ },
+};
+
+static int load_prog(const struct bpf_insn *insns,
+ enum bpf_attach_type expected_attach_type)
+{
+ LIBBPF_OPTS(bpf_prog_load_opts, opts,
+ .expected_attach_type = expected_attach_type,
+ .log_level = 2,
+ .log_buf = bpf_log_buf,
+ .log_size = sizeof(bpf_log_buf),
+ );
+ int fd, insns_cnt = 0;
+
+ for (;
+ insns[insns_cnt].code != (BPF_JMP | BPF_EXIT);
+ insns_cnt++) {
+ }
+ insns_cnt++;
+
+ fd = bpf_prog_load(BPF_PROG_TYPE_CGROUP_SOCK, NULL, "GPL", insns,
+ insns_cnt, &opts);
+ if (fd < 0)
+ fprintf(stderr, "%s\n", bpf_log_buf);
+
+ return fd;
+}
+
+static int bind_sock(int domain, int type, const char *ip,
+ unsigned short port, unsigned short port_retry)
+{
+ struct sockaddr_storage addr;
+ struct sockaddr_in6 *addr6;
+ struct sockaddr_in *addr4;
+ int sockfd = -1;
+ socklen_t len;
+ int res = SUCCESS;
+
+ sockfd = socket(domain, type, 0);
+ if (sockfd < 0)
+ goto err;
+
+ memset(&addr, 0, sizeof(addr));
+
+ if (domain == AF_INET) {
+ len = sizeof(struct sockaddr_in);
+ addr4 = (struct sockaddr_in *)&addr;
+ addr4->sin_family = domain;
+ addr4->sin_port = htons(port);
+ if (inet_pton(domain, ip, (void *)&addr4->sin_addr) != 1)
+ goto err;
+ } else if (domain == AF_INET6) {
+ len = sizeof(struct sockaddr_in6);
+ addr6 = (struct sockaddr_in6 *)&addr;
+ addr6->sin6_family = domain;
+ addr6->sin6_port = htons(port);
+ if (inet_pton(domain, ip, (void *)&addr6->sin6_addr) != 1)
+ goto err;
+ } else {
+ goto err;
+ }
+
+ if (bind(sockfd, (const struct sockaddr *)&addr, len) == -1) {
+ /* sys_bind() may fail for different reasons, errno has to be
+ * checked to confirm that BPF program rejected it.
+ */
+ if (errno != EPERM)
+ goto err;
+ if (port_retry)
+ goto retry;
+ res = BIND_REJECT;
+ goto out;
+ }
+
+ goto out;
+retry:
+ if (domain == AF_INET)
+ addr4->sin_port = htons(port_retry);
+ else
+ addr6->sin6_port = htons(port_retry);
+ if (bind(sockfd, (const struct sockaddr *)&addr, len) == -1) {
+ if (errno != EPERM)
+ goto err;
+ res = RETRY_REJECT;
+ } else {
+ res = RETRY_SUCCESS;
+ }
+ goto out;
+err:
+ res = -1;
+out:
+ close(sockfd);
+ return res;
+}
+
+static int run_test(int cgroup_fd, struct sock_post_bind_test *test)
+{
+ int err, prog_fd, res, ret = 0;
+
+ prog_fd = load_prog(test->insns, test->expected_attach_type);
+ if (prog_fd < 0)
+ goto err;
+
+ err = bpf_prog_attach(prog_fd, cgroup_fd, test->attach_type, 0);
+ if (err < 0) {
+ if (test->result == ATTACH_REJECT)
+ goto out;
+ else
+ goto err;
+ }
+
+ res = bind_sock(test->domain, test->type, test->ip, test->port,
+ test->port_retry);
+ if (res > 0 && test->result == res)
+ goto out;
+err:
+ ret = -1;
+out:
+ /* Detaching w/o checking return code: best effort attempt. */
+ if (prog_fd != -1)
+ bpf_prog_detach(cgroup_fd, test->attach_type);
+ close(prog_fd);
+ return ret;
+}
+
+void test_sock_post_bind(void)
+{
+ struct netns_obj *ns = NULL;
+ int cgroup_fd = 0;
+ int i;
+
+ ns = netns_new(TEST_NS, true);
+ if (!ASSERT_OK_PTR(ns, "netns_new"))
+ goto cleanup;
+
+ cgroup_fd = test__join_cgroup("/post_bind");
+ if (!ASSERT_OK_FD(cgroup_fd, "join_cgroup"))
+ goto cleanup;
+
+ for (i = 0; i < ARRAY_SIZE(tests); i++) {
+ if (!test__start_subtest(tests[i].descr))
+ continue;
+
+ ASSERT_OK(run_test(cgroup_fd, &tests[i]), tests[i].descr);
+ }
+
+cleanup:
+ if (ns)
+ netns_free(ns);
+ if (cgroup_fd)
+ close(cgroup_fd);
+}
diff --git a/tools/testing/selftests/bpf/test_sock.c b/tools/testing/selftests/bpf/test_sock.c
index 810c3740b2cc..9ed908163d98 100644
--- a/tools/testing/selftests/bpf/test_sock.c
+++ b/tools/testing/selftests/bpf/test_sock.c
@@ -127,251 +127,6 @@ static struct sock_test tests[] = {
.port = 8097,
.result = SUCCESS,
},
- {
- .descr = "attach type mismatch bind4 vs bind6",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
- .attach_type = BPF_CGROUP_INET6_POST_BIND,
- .result = ATTACH_REJECT,
- },
- {
- .descr = "attach type mismatch bind6 vs bind4",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
- .attach_type = BPF_CGROUP_INET4_POST_BIND,
- .result = ATTACH_REJECT,
- },
- {
- .descr = "attach type mismatch default vs bind4",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = 0,
- .attach_type = BPF_CGROUP_INET4_POST_BIND,
- .result = ATTACH_REJECT,
- },
- {
- .descr = "attach type mismatch bind6 vs sock_create",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
- .attach_type = BPF_CGROUP_INET_SOCK_CREATE,
- .result = ATTACH_REJECT,
- },
- {
- .descr = "bind4 reject all",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
- .attach_type = BPF_CGROUP_INET4_POST_BIND,
- .domain = AF_INET,
- .type = SOCK_STREAM,
- .ip = "0.0.0.0",
- .result = BIND_REJECT,
- },
- {
- .descr = "bind6 reject all",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
- .attach_type = BPF_CGROUP_INET6_POST_BIND,
- .domain = AF_INET6,
- .type = SOCK_STREAM,
- .ip = "::",
- .result = BIND_REJECT,
- },
- {
- .descr = "bind6 deny specific IP & port",
- .insns = {
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
-
- /* if (ip == expected && port == expected) */
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
- offsetof(struct bpf_sock, src_ip6[3])),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_7,
- __bpf_constant_ntohl(0x00000001), 4),
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
- offsetof(struct bpf_sock, src_port)),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x2001, 2),
-
- /* return DENY; */
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_JMP_A(1),
-
- /* else return ALLOW; */
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
- .attach_type = BPF_CGROUP_INET6_POST_BIND,
- .domain = AF_INET6,
- .type = SOCK_STREAM,
- .ip = "::1",
- .port = 8193,
- .result = BIND_REJECT,
- },
- {
- .descr = "bind4 allow specific IP & port",
- .insns = {
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
-
- /* if (ip == expected && port == expected) */
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
- offsetof(struct bpf_sock, src_ip4)),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_7,
- __bpf_constant_ntohl(0x7F000001), 4),
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
- offsetof(struct bpf_sock, src_port)),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2),
-
- /* return ALLOW; */
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_JMP_A(1),
-
- /* else return DENY; */
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
- .attach_type = BPF_CGROUP_INET4_POST_BIND,
- .domain = AF_INET,
- .type = SOCK_STREAM,
- .ip = "127.0.0.1",
- .port = 4098,
- .result = SUCCESS,
- },
- {
- .descr = "bind4 deny specific IP & port of TCP, and retry",
- .insns = {
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
-
- /* if (ip == expected && port == expected) */
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
- offsetof(struct bpf_sock, src_ip4)),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_7,
- __bpf_constant_ntohl(0x7F000001), 4),
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
- offsetof(struct bpf_sock, src_port)),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2),
-
- /* return DENY; */
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_JMP_A(1),
-
- /* else return ALLOW; */
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
- .attach_type = BPF_CGROUP_INET4_POST_BIND,
- .domain = AF_INET,
- .type = SOCK_STREAM,
- .ip = "127.0.0.1",
- .port = 4098,
- .port_retry = 5000,
- .result = RETRY_SUCCESS,
- },
- {
- .descr = "bind4 deny specific IP & port of UDP, and retry",
- .insns = {
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
-
- /* if (ip == expected && port == expected) */
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
- offsetof(struct bpf_sock, src_ip4)),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_7,
- __bpf_constant_ntohl(0x7F000001), 4),
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
- offsetof(struct bpf_sock, src_port)),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2),
-
- /* return DENY; */
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_JMP_A(1),
-
- /* else return ALLOW; */
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
- .attach_type = BPF_CGROUP_INET4_POST_BIND,
- .domain = AF_INET,
- .type = SOCK_DGRAM,
- .ip = "127.0.0.1",
- .port = 4098,
- .port_retry = 5000,
- .result = RETRY_SUCCESS,
- },
- {
- .descr = "bind6 deny specific IP & port, and retry",
- .insns = {
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
-
- /* if (ip == expected && port == expected) */
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
- offsetof(struct bpf_sock, src_ip6[3])),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_7,
- __bpf_constant_ntohl(0x00000001), 4),
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6,
- offsetof(struct bpf_sock, src_port)),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x2001, 2),
-
- /* return DENY; */
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_JMP_A(1),
-
- /* else return ALLOW; */
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
- .attach_type = BPF_CGROUP_INET6_POST_BIND,
- .domain = AF_INET6,
- .type = SOCK_STREAM,
- .ip = "::1",
- .port = 8193,
- .port_retry = 9000,
- .result = RETRY_SUCCESS,
- },
- {
- .descr = "bind4 allow all",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET4_POST_BIND,
- .attach_type = BPF_CGROUP_INET4_POST_BIND,
- .domain = AF_INET,
- .type = SOCK_STREAM,
- .ip = "0.0.0.0",
- .result = SUCCESS,
- },
- {
- .descr = "bind6 allow all",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .expected_attach_type = BPF_CGROUP_INET6_POST_BIND,
- .attach_type = BPF_CGROUP_INET6_POST_BIND,
- .domain = AF_INET6,
- .type = SOCK_STREAM,
- .ip = "::",
- .result = SUCCESS,
- },
};
static size_t probe_prog_length(const struct bpf_insn *fp)
--
2.47.0.105.g07ac214952-goog
