selftests/bpf: Prepare test_sock_addr for extension
test_sock_addr was not easy to extend since it was focused on sys_bind and sys_connect quite a bit. Reorganized it so that it'll be easier to cover new test-cases for `BPF_PROG_TYPE_CGROUP_SOCK_ADDR`: - decouple test-cases so that only one BPF prog is tested at a time; - check programmatically that local IP:port for sys_bind, source IP and destination IP:port for sys_connect are rewritten property by tested BPF programs. The output of new version: # test_sock_addr.sh 2>/dev/null Wait for testing IPv4/IPv6 to become available ... OK Test case: bind4: load prog with wrong expected attach type .. [PASS] Test case: bind4: attach prog with wrong attach type .. [PASS] Test case: bind4: rewrite IP & TCP port in .. [PASS] Test case: bind4: rewrite IP & UDP port in .. [PASS] Test case: bind6: load prog with wrong expected attach type .. [PASS] Test case: bind6: attach prog with wrong attach type .. [PASS] Test case: bind6: rewrite IP & TCP port in .. [PASS] Test case: bind6: rewrite IP & UDP port in .. [PASS] Test case: connect4: load prog with wrong expected attach type .. [PASS] Test case: connect4: attach prog with wrong attach type .. [PASS] Test case: connect4: rewrite IP & TCP port .. [PASS] Test case: connect4: rewrite IP & UDP port .. [PASS] Test case: connect6: load prog with wrong expected attach type .. [PASS] Test case: connect6: attach prog with wrong attach type .. [PASS] Test case: connect6: rewrite IP & TCP port .. [PASS] Test case: connect6: rewrite IP & UDP port .. [PASS] Summary: 16 PASSED, 0 FAILED (stderr contains errors from libbpf when testing load/attach with invalid arguments) Signed-off-by: Andrey Ignatov <rdna@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Andrey Ignatov
Daniel Borkmann
parent
72481f398c
commit
9be71aa6e5
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@ -17,34 +17,292 @@
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#include "cgroup_helpers.h"
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#include "bpf_rlimit.h"
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#ifndef ARRAY_SIZE
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# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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#endif
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#define CG_PATH "/foo"
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#define CONNECT4_PROG_PATH "./connect4_prog.o"
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#define CONNECT6_PROG_PATH "./connect6_prog.o"
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#define SERV4_IP "192.168.1.254"
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#define SERV4_REWRITE_IP "127.0.0.1"
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#define SRC4_REWRITE_IP "127.0.0.4"
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#define SERV4_PORT 4040
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#define SERV4_REWRITE_PORT 4444
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#define SERV6_IP "face:b00c:1234:5678::abcd"
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#define SERV6_REWRITE_IP "::1"
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#define SRC6_REWRITE_IP "::6"
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#define SERV6_PORT 6060
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#define SERV6_REWRITE_PORT 6666
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#define INET_NTOP_BUF 40
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typedef int (*load_fn)(enum bpf_attach_type, const char *comment);
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struct sock_addr_test;
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typedef int (*load_fn)(const struct sock_addr_test *test);
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typedef int (*info_fn)(int, struct sockaddr *, socklen_t *);
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struct program {
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enum bpf_attach_type type;
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load_fn loadfn;
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int fd;
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const char *name;
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enum bpf_attach_type invalid_type;
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char bpf_log_buf[BPF_LOG_BUF_SIZE];
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struct sock_addr_test {
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const char *descr;
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/* BPF prog properties */
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load_fn loadfn;
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enum bpf_attach_type expected_attach_type;
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enum bpf_attach_type attach_type;
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/* Socket properties */
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int domain;
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int type;
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/* IP:port pairs for BPF prog to override */
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const char *requested_ip;
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unsigned short requested_port;
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const char *expected_ip;
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unsigned short expected_port;
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const char *expected_src_ip;
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/* Expected test result */
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enum {
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LOAD_REJECT,
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ATTACH_REJECT,
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SUCCESS,
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} expected_result;
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};
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char bpf_log_buf[BPF_LOG_BUF_SIZE];
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static int bind4_prog_load(const struct sock_addr_test *test);
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static int bind6_prog_load(const struct sock_addr_test *test);
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static int connect4_prog_load(const struct sock_addr_test *test);
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static int connect6_prog_load(const struct sock_addr_test *test);
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static struct sock_addr_test tests[] = {
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/* bind */
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{
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"bind4: load prog with wrong expected attach type",
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bind4_prog_load,
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BPF_CGROUP_INET6_BIND,
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BPF_CGROUP_INET4_BIND,
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AF_INET,
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SOCK_STREAM,
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NULL,
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0,
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NULL,
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0,
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NULL,
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LOAD_REJECT,
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},
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{
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"bind4: attach prog with wrong attach type",
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bind4_prog_load,
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BPF_CGROUP_INET4_BIND,
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BPF_CGROUP_INET6_BIND,
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AF_INET,
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SOCK_STREAM,
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NULL,
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0,
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NULL,
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0,
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NULL,
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ATTACH_REJECT,
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},
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{
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"bind4: rewrite IP & TCP port in",
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bind4_prog_load,
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BPF_CGROUP_INET4_BIND,
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BPF_CGROUP_INET4_BIND,
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AF_INET,
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SOCK_STREAM,
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SERV4_IP,
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SERV4_PORT,
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SERV4_REWRITE_IP,
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SERV4_REWRITE_PORT,
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NULL,
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SUCCESS,
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},
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{
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"bind4: rewrite IP & UDP port in",
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bind4_prog_load,
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BPF_CGROUP_INET4_BIND,
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BPF_CGROUP_INET4_BIND,
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AF_INET,
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SOCK_DGRAM,
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SERV4_IP,
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SERV4_PORT,
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SERV4_REWRITE_IP,
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SERV4_REWRITE_PORT,
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NULL,
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SUCCESS,
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},
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{
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"bind6: load prog with wrong expected attach type",
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bind6_prog_load,
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BPF_CGROUP_INET4_BIND,
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BPF_CGROUP_INET6_BIND,
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AF_INET6,
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SOCK_STREAM,
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NULL,
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0,
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NULL,
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0,
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NULL,
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LOAD_REJECT,
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},
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{
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"bind6: attach prog with wrong attach type",
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bind6_prog_load,
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BPF_CGROUP_INET6_BIND,
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BPF_CGROUP_INET4_BIND,
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AF_INET,
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SOCK_STREAM,
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NULL,
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0,
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NULL,
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0,
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NULL,
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ATTACH_REJECT,
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},
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{
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"bind6: rewrite IP & TCP port in",
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bind6_prog_load,
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BPF_CGROUP_INET6_BIND,
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BPF_CGROUP_INET6_BIND,
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AF_INET6,
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SOCK_STREAM,
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SERV6_IP,
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SERV6_PORT,
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SERV6_REWRITE_IP,
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SERV6_REWRITE_PORT,
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NULL,
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SUCCESS,
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},
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{
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"bind6: rewrite IP & UDP port in",
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bind6_prog_load,
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BPF_CGROUP_INET6_BIND,
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BPF_CGROUP_INET6_BIND,
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AF_INET6,
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SOCK_DGRAM,
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SERV6_IP,
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SERV6_PORT,
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SERV6_REWRITE_IP,
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SERV6_REWRITE_PORT,
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NULL,
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SUCCESS,
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},
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/* connect */
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{
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"connect4: load prog with wrong expected attach type",
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connect4_prog_load,
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BPF_CGROUP_INET6_CONNECT,
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BPF_CGROUP_INET4_CONNECT,
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AF_INET,
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SOCK_STREAM,
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NULL,
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0,
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NULL,
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0,
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NULL,
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LOAD_REJECT,
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},
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{
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"connect4: attach prog with wrong attach type",
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connect4_prog_load,
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BPF_CGROUP_INET4_CONNECT,
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BPF_CGROUP_INET6_CONNECT,
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AF_INET,
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SOCK_STREAM,
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NULL,
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0,
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NULL,
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0,
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NULL,
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ATTACH_REJECT,
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},
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{
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"connect4: rewrite IP & TCP port",
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connect4_prog_load,
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BPF_CGROUP_INET4_CONNECT,
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BPF_CGROUP_INET4_CONNECT,
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AF_INET,
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SOCK_STREAM,
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SERV4_IP,
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SERV4_PORT,
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SERV4_REWRITE_IP,
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SERV4_REWRITE_PORT,
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SRC4_REWRITE_IP,
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SUCCESS,
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},
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{
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"connect4: rewrite IP & UDP port",
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connect4_prog_load,
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BPF_CGROUP_INET4_CONNECT,
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BPF_CGROUP_INET4_CONNECT,
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AF_INET,
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SOCK_DGRAM,
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SERV4_IP,
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SERV4_PORT,
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SERV4_REWRITE_IP,
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SERV4_REWRITE_PORT,
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SRC4_REWRITE_IP,
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SUCCESS,
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},
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{
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"connect6: load prog with wrong expected attach type",
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connect6_prog_load,
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BPF_CGROUP_INET4_CONNECT,
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BPF_CGROUP_INET6_CONNECT,
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AF_INET6,
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SOCK_STREAM,
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NULL,
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0,
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NULL,
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0,
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NULL,
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LOAD_REJECT,
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},
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{
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"connect6: attach prog with wrong attach type",
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connect6_prog_load,
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BPF_CGROUP_INET6_CONNECT,
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BPF_CGROUP_INET4_CONNECT,
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AF_INET,
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SOCK_STREAM,
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NULL,
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0,
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NULL,
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0,
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NULL,
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ATTACH_REJECT,
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},
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{
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"connect6: rewrite IP & TCP port",
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connect6_prog_load,
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BPF_CGROUP_INET6_CONNECT,
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BPF_CGROUP_INET6_CONNECT,
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AF_INET6,
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SOCK_STREAM,
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SERV6_IP,
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SERV6_PORT,
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SERV6_REWRITE_IP,
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SERV6_REWRITE_PORT,
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SRC6_REWRITE_IP,
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SUCCESS,
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},
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{
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"connect6: rewrite IP & UDP port",
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connect6_prog_load,
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BPF_CGROUP_INET6_CONNECT,
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BPF_CGROUP_INET6_CONNECT,
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AF_INET6,
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SOCK_DGRAM,
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SERV6_IP,
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SERV6_PORT,
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SERV6_REWRITE_IP,
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SERV6_REWRITE_PORT,
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SRC6_REWRITE_IP,
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SUCCESS,
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},
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};
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static int mk_sockaddr(int domain, const char *ip, unsigned short port,
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struct sockaddr *addr, socklen_t addr_len)
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@ -84,25 +342,23 @@ static int mk_sockaddr(int domain, const char *ip, unsigned short port,
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return 0;
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}
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static int load_insns(enum bpf_attach_type attach_type,
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const struct bpf_insn *insns, size_t insns_cnt,
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const char *comment)
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static int load_insns(const struct sock_addr_test *test,
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const struct bpf_insn *insns, size_t insns_cnt)
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{
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struct bpf_load_program_attr load_attr;
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int ret;
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memset(&load_attr, 0, sizeof(struct bpf_load_program_attr));
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load_attr.prog_type = BPF_PROG_TYPE_CGROUP_SOCK_ADDR;
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load_attr.expected_attach_type = attach_type;
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load_attr.expected_attach_type = test->expected_attach_type;
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load_attr.insns = insns;
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load_attr.insns_cnt = insns_cnt;
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load_attr.license = "GPL";
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ret = bpf_load_program_xattr(&load_attr, bpf_log_buf, BPF_LOG_BUF_SIZE);
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if (ret < 0 && comment) {
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log_err(">>> Loading %s program error.\n"
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">>> Output from verifier:\n%s\n-------\n",
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comment, bpf_log_buf);
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if (ret < 0 && test->expected_result != LOAD_REJECT) {
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log_err(">>> Loading program error.\n"
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">>> Verifier output:\n%s\n-------\n", bpf_log_buf);
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}
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return ret;
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@ -119,8 +375,7 @@ static int load_insns(enum bpf_attach_type attach_type,
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* to count jumps properly.
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*/
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static int bind4_prog_load(enum bpf_attach_type attach_type,
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const char *comment)
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static int bind4_prog_load(const struct sock_addr_test *test)
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{
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union {
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uint8_t u4_addr8[4];
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@ -186,12 +441,10 @@ static int bind4_prog_load(enum bpf_attach_type attach_type,
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BPF_EXIT_INSN(),
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};
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return load_insns(attach_type, insns,
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sizeof(insns) / sizeof(struct bpf_insn), comment);
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return load_insns(test, insns, sizeof(insns) / sizeof(struct bpf_insn));
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}
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static int bind6_prog_load(enum bpf_attach_type attach_type,
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const char *comment)
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static int bind6_prog_load(const struct sock_addr_test *test)
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{
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struct sockaddr_in6 addr6_rw;
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struct in6_addr ip6;
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@ -254,13 +507,10 @@ static int bind6_prog_load(enum bpf_attach_type attach_type,
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BPF_EXIT_INSN(),
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};
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return load_insns(attach_type, insns,
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sizeof(insns) / sizeof(struct bpf_insn), comment);
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return load_insns(test, insns, sizeof(insns) / sizeof(struct bpf_insn));
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}
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static int connect_prog_load_path(const char *path,
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enum bpf_attach_type attach_type,
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const char *comment)
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static int load_path(const struct sock_addr_test *test, const char *path)
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{
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struct bpf_prog_load_attr attr;
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struct bpf_object *obj;
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@ -269,75 +519,83 @@ static int connect_prog_load_path(const char *path,
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memset(&attr, 0, sizeof(struct bpf_prog_load_attr));
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attr.file = path;
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attr.prog_type = BPF_PROG_TYPE_CGROUP_SOCK_ADDR;
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attr.expected_attach_type = attach_type;
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attr.expected_attach_type = test->expected_attach_type;
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if (bpf_prog_load_xattr(&attr, &obj, &prog_fd)) {
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if (comment)
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log_err(">>> Loading %s program at %s error.\n",
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comment, path);
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if (test->expected_result != LOAD_REJECT)
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log_err(">>> Loading program (%s) error.\n", path);
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return -1;
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}
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return prog_fd;
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}
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static int connect4_prog_load(enum bpf_attach_type attach_type,
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const char *comment)
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static int connect4_prog_load(const struct sock_addr_test *test)
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{
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return connect_prog_load_path(CONNECT4_PROG_PATH, attach_type, comment);
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return load_path(test, CONNECT4_PROG_PATH);
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}
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static int connect6_prog_load(enum bpf_attach_type attach_type,
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const char *comment)
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static int connect6_prog_load(const struct sock_addr_test *test)
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{
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return connect_prog_load_path(CONNECT6_PROG_PATH, attach_type, comment);
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return load_path(test, CONNECT6_PROG_PATH);
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}
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static void print_ip_port(int sockfd, info_fn fn, const char *fmt)
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static int cmp_addr(const struct sockaddr_storage *addr1,
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const struct sockaddr_storage *addr2, int cmp_port)
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{
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char addr_buf[INET_NTOP_BUF];
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struct sockaddr_storage addr;
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struct sockaddr_in6 *addr6;
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struct sockaddr_in *addr4;
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socklen_t addr_len;
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unsigned short port;
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void *nip;
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const struct sockaddr_in *four1, *four2;
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const struct sockaddr_in6 *six1, *six2;
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addr_len = sizeof(struct sockaddr_storage);
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memset(&addr, 0, addr_len);
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if (addr1->ss_family != addr2->ss_family)
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return -1;
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if (fn(sockfd, (struct sockaddr *)&addr, (socklen_t *)&addr_len) == 0) {
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if (addr.ss_family == AF_INET) {
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addr4 = (struct sockaddr_in *)&addr;
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nip = (void *)&addr4->sin_addr;
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port = ntohs(addr4->sin_port);
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} else if (addr.ss_family == AF_INET6) {
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addr6 = (struct sockaddr_in6 *)&addr;
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nip = (void *)&addr6->sin6_addr;
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port = ntohs(addr6->sin6_port);
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} else {
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return;
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}
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const char *addr_str =
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inet_ntop(addr.ss_family, nip, addr_buf, INET_NTOP_BUF);
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printf(fmt, addr_str ? addr_str : "??", port);
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if (addr1->ss_family == AF_INET) {
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four1 = (const struct sockaddr_in *)addr1;
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four2 = (const struct sockaddr_in *)addr2;
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return !((four1->sin_port == four2->sin_port || !cmp_port) &&
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four1->sin_addr.s_addr == four2->sin_addr.s_addr);
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} else if (addr1->ss_family == AF_INET6) {
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six1 = (const struct sockaddr_in6 *)addr1;
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six2 = (const struct sockaddr_in6 *)addr2;
|
||||
return !((six1->sin6_port == six2->sin6_port || !cmp_port) &&
|
||||
!memcmp(&six1->sin6_addr, &six2->sin6_addr,
|
||||
sizeof(struct in6_addr)));
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
static void print_local_ip_port(int sockfd, const char *fmt)
|
||||
static int cmp_sock_addr(info_fn fn, int sock1,
|
||||
const struct sockaddr_storage *addr2, int cmp_port)
|
||||
{
|
||||
print_ip_port(sockfd, getsockname, fmt);
|
||||
struct sockaddr_storage addr1;
|
||||
socklen_t len1 = sizeof(addr1);
|
||||
|
||||
memset(&addr1, 0, len1);
|
||||
if (fn(sock1, (struct sockaddr *)&addr1, (socklen_t *)&len1) != 0)
|
||||
return -1;
|
||||
|
||||
return cmp_addr(&addr1, addr2, cmp_port);
|
||||
}
|
||||
|
||||
static void print_remote_ip_port(int sockfd, const char *fmt)
|
||||
static int cmp_local_ip(int sock1, const struct sockaddr_storage *addr2)
|
||||
{
|
||||
print_ip_port(sockfd, getpeername, fmt);
|
||||
return cmp_sock_addr(getsockname, sock1, addr2, /*cmp_port*/ 0);
|
||||
}
|
||||
|
||||
static int cmp_local_addr(int sock1, const struct sockaddr_storage *addr2)
|
||||
{
|
||||
return cmp_sock_addr(getsockname, sock1, addr2, /*cmp_port*/ 1);
|
||||
}
|
||||
|
||||
static int cmp_peer_addr(int sock1, const struct sockaddr_storage *addr2)
|
||||
{
|
||||
return cmp_sock_addr(getpeername, sock1, addr2, /*cmp_port*/ 1);
|
||||
}
|
||||
|
||||
static int start_server(int type, const struct sockaddr_storage *addr,
|
||||
socklen_t addr_len)
|
||||
{
|
||||
|
||||
int fd;
|
||||
|
||||
fd = socket(addr->ss_family, type, 0);
|
||||
|
|
@ -358,8 +616,6 @@ static int start_server(int type, const struct sockaddr_storage *addr,
|
|||
}
|
||||
}
|
||||
|
||||
print_local_ip_port(fd, "\t Actual: bind(%s, %d)\n");
|
||||
|
||||
goto out;
|
||||
close_out:
|
||||
close(fd);
|
||||
|
|
@ -372,19 +628,19 @@ static int connect_to_server(int type, const struct sockaddr_storage *addr,
|
|||
socklen_t addr_len)
|
||||
{
|
||||
int domain;
|
||||
int fd;
|
||||
int fd = -1;
|
||||
|
||||
domain = addr->ss_family;
|
||||
|
||||
if (domain != AF_INET && domain != AF_INET6) {
|
||||
log_err("Unsupported address family");
|
||||
return -1;
|
||||
goto err;
|
||||
}
|
||||
|
||||
fd = socket(domain, type, 0);
|
||||
if (fd == -1) {
|
||||
log_err("Failed to creating client socket");
|
||||
return -1;
|
||||
log_err("Failed to create client socket");
|
||||
goto err;
|
||||
}
|
||||
|
||||
if (connect(fd, (const struct sockaddr *)addr, addr_len) == -1) {
|
||||
|
|
@ -392,162 +648,188 @@ static int connect_to_server(int type, const struct sockaddr_storage *addr,
|
|||
goto err;
|
||||
}
|
||||
|
||||
print_remote_ip_port(fd, "\t Actual: connect(%s, %d)");
|
||||
print_local_ip_port(fd, " from (%s, %d)\n");
|
||||
goto out;
|
||||
err:
|
||||
close(fd);
|
||||
fd = -1;
|
||||
out:
|
||||
return fd;
|
||||
}
|
||||
|
||||
static int init_addrs(const struct sock_addr_test *test,
|
||||
struct sockaddr_storage *requested_addr,
|
||||
struct sockaddr_storage *expected_addr,
|
||||
struct sockaddr_storage *expected_src_addr)
|
||||
{
|
||||
socklen_t addr_len = sizeof(struct sockaddr_storage);
|
||||
|
||||
if (mk_sockaddr(test->domain, test->expected_ip, test->expected_port,
|
||||
(struct sockaddr *)expected_addr, addr_len) == -1)
|
||||
goto err;
|
||||
|
||||
if (mk_sockaddr(test->domain, test->requested_ip, test->requested_port,
|
||||
(struct sockaddr *)requested_addr, addr_len) == -1)
|
||||
goto err;
|
||||
|
||||
if (test->expected_src_ip &&
|
||||
mk_sockaddr(test->domain, test->expected_src_ip, 0,
|
||||
(struct sockaddr *)expected_src_addr, addr_len) == -1)
|
||||
goto err;
|
||||
|
||||
return 0;
|
||||
err:
|
||||
close(fd);
|
||||
return -1;
|
||||
}
|
||||
|
||||
static void print_test_case_num(int domain, int type)
|
||||
static int run_bind_test_case(const struct sock_addr_test *test)
|
||||
{
|
||||
static int test_num;
|
||||
|
||||
printf("Test case #%d (%s/%s):\n", ++test_num,
|
||||
(domain == AF_INET ? "IPv4" :
|
||||
domain == AF_INET6 ? "IPv6" :
|
||||
"unknown_domain"),
|
||||
(type == SOCK_STREAM ? "TCP" :
|
||||
type == SOCK_DGRAM ? "UDP" :
|
||||
"unknown_type"));
|
||||
}
|
||||
|
||||
static int run_test_case(int domain, int type, const char *ip,
|
||||
unsigned short port)
|
||||
{
|
||||
struct sockaddr_storage addr;
|
||||
socklen_t addr_len = sizeof(addr);
|
||||
socklen_t addr_len = sizeof(struct sockaddr_storage);
|
||||
struct sockaddr_storage requested_addr;
|
||||
struct sockaddr_storage expected_addr;
|
||||
int clientfd = -1;
|
||||
int servfd = -1;
|
||||
int err = 0;
|
||||
|
||||
print_test_case_num(domain, type);
|
||||
if (init_addrs(test, &requested_addr, &expected_addr, NULL))
|
||||
goto err;
|
||||
|
||||
if (mk_sockaddr(domain, ip, port, (struct sockaddr *)&addr,
|
||||
addr_len) == -1)
|
||||
return -1;
|
||||
|
||||
printf("\tRequested: bind(%s, %d) ..\n", ip, port);
|
||||
servfd = start_server(type, &addr, addr_len);
|
||||
servfd = start_server(test->type, &requested_addr, addr_len);
|
||||
if (servfd == -1)
|
||||
goto err;
|
||||
|
||||
printf("\tRequested: connect(%s, %d) from (*, *) ..\n", ip, port);
|
||||
if (connect_to_server(type, &addr, addr_len))
|
||||
if (cmp_local_addr(servfd, &expected_addr))
|
||||
goto err;
|
||||
|
||||
/* Try to connect to server just in case */
|
||||
clientfd = connect_to_server(test->type, &expected_addr, addr_len);
|
||||
if (clientfd == -1)
|
||||
goto err;
|
||||
|
||||
goto out;
|
||||
err:
|
||||
err = -1;
|
||||
out:
|
||||
close(clientfd);
|
||||
close(servfd);
|
||||
return err;
|
||||
}
|
||||
|
||||
static void close_progs_fds(struct program *progs, size_t prog_cnt)
|
||||
{
|
||||
size_t i;
|
||||
|
||||
for (i = 0; i < prog_cnt; ++i) {
|
||||
close(progs[i].fd);
|
||||
progs[i].fd = -1;
|
||||
}
|
||||
}
|
||||
|
||||
static int load_and_attach_progs(int cgfd, struct program *progs,
|
||||
size_t prog_cnt)
|
||||
{
|
||||
size_t i;
|
||||
|
||||
for (i = 0; i < prog_cnt; ++i) {
|
||||
printf("Load %s with invalid type (can pollute stderr) ",
|
||||
progs[i].name);
|
||||
fflush(stdout);
|
||||
progs[i].fd = progs[i].loadfn(progs[i].invalid_type, NULL);
|
||||
if (progs[i].fd != -1) {
|
||||
log_err("Load with invalid type accepted for %s",
|
||||
progs[i].name);
|
||||
goto err;
|
||||
}
|
||||
printf("... REJECTED\n");
|
||||
|
||||
printf("Load %s with valid type", progs[i].name);
|
||||
progs[i].fd = progs[i].loadfn(progs[i].type, progs[i].name);
|
||||
if (progs[i].fd == -1) {
|
||||
log_err("Failed to load program %s", progs[i].name);
|
||||
goto err;
|
||||
}
|
||||
printf(" ... OK\n");
|
||||
|
||||
printf("Attach %s with invalid type", progs[i].name);
|
||||
if (bpf_prog_attach(progs[i].fd, cgfd, progs[i].invalid_type,
|
||||
BPF_F_ALLOW_OVERRIDE) != -1) {
|
||||
log_err("Attach with invalid type accepted for %s",
|
||||
progs[i].name);
|
||||
goto err;
|
||||
}
|
||||
printf(" ... REJECTED\n");
|
||||
|
||||
printf("Attach %s with valid type", progs[i].name);
|
||||
if (bpf_prog_attach(progs[i].fd, cgfd, progs[i].type,
|
||||
BPF_F_ALLOW_OVERRIDE) == -1) {
|
||||
log_err("Failed to attach program %s", progs[i].name);
|
||||
goto err;
|
||||
}
|
||||
printf(" ... OK\n");
|
||||
}
|
||||
|
||||
return 0;
|
||||
err:
|
||||
close_progs_fds(progs, prog_cnt);
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int run_domain_test(int domain, int cgfd, struct program *progs,
|
||||
size_t prog_cnt, const char *ip, unsigned short port)
|
||||
static int run_connect_test_case(const struct sock_addr_test *test)
|
||||
{
|
||||
socklen_t addr_len = sizeof(struct sockaddr_storage);
|
||||
struct sockaddr_storage expected_src_addr;
|
||||
struct sockaddr_storage requested_addr;
|
||||
struct sockaddr_storage expected_addr;
|
||||
int clientfd = -1;
|
||||
int servfd = -1;
|
||||
int err = 0;
|
||||
|
||||
if (load_and_attach_progs(cgfd, progs, prog_cnt) == -1)
|
||||
if (init_addrs(test, &requested_addr, &expected_addr,
|
||||
&expected_src_addr))
|
||||
goto err;
|
||||
|
||||
if (run_test_case(domain, SOCK_STREAM, ip, port) == -1)
|
||||
/* Prepare server to connect to */
|
||||
servfd = start_server(test->type, &expected_addr, addr_len);
|
||||
if (servfd == -1)
|
||||
goto err;
|
||||
|
||||
if (run_test_case(domain, SOCK_DGRAM, ip, port) == -1)
|
||||
clientfd = connect_to_server(test->type, &requested_addr, addr_len);
|
||||
if (clientfd == -1)
|
||||
goto err;
|
||||
|
||||
/* Make sure src and dst addrs were overridden properly */
|
||||
if (cmp_peer_addr(clientfd, &expected_addr))
|
||||
goto err;
|
||||
|
||||
if (cmp_local_ip(clientfd, &expected_src_addr))
|
||||
goto err;
|
||||
|
||||
goto out;
|
||||
err:
|
||||
err = -1;
|
||||
out:
|
||||
close_progs_fds(progs, prog_cnt);
|
||||
close(clientfd);
|
||||
close(servfd);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int run_test(void)
|
||||
static int run_test_case(int cgfd, const struct sock_addr_test *test)
|
||||
{
|
||||
int progfd = -1;
|
||||
int err = 0;
|
||||
|
||||
printf("Test case: %s .. ", test->descr);
|
||||
|
||||
progfd = test->loadfn(test);
|
||||
if (test->expected_result == LOAD_REJECT && progfd < 0)
|
||||
goto out;
|
||||
else if (test->expected_result == LOAD_REJECT || progfd < 0)
|
||||
goto err;
|
||||
|
||||
err = bpf_prog_attach(progfd, cgfd, test->attach_type,
|
||||
BPF_F_ALLOW_OVERRIDE);
|
||||
if (test->expected_result == ATTACH_REJECT && err) {
|
||||
err = 0; /* error was expected, reset it */
|
||||
goto out;
|
||||
} else if (test->expected_result == ATTACH_REJECT || err) {
|
||||
goto err;
|
||||
}
|
||||
|
||||
switch (test->attach_type) {
|
||||
case BPF_CGROUP_INET4_BIND:
|
||||
case BPF_CGROUP_INET6_BIND:
|
||||
err = run_bind_test_case(test);
|
||||
break;
|
||||
case BPF_CGROUP_INET4_CONNECT:
|
||||
case BPF_CGROUP_INET6_CONNECT:
|
||||
err = run_connect_test_case(test);
|
||||
break;
|
||||
default:
|
||||
goto err;
|
||||
}
|
||||
|
||||
if (err || test->expected_result != SUCCESS)
|
||||
goto err;
|
||||
|
||||
goto out;
|
||||
err:
|
||||
err = -1;
|
||||
out:
|
||||
/* Detaching w/o checking return code: best effort attempt. */
|
||||
if (progfd != -1)
|
||||
bpf_prog_detach(cgfd, test->attach_type);
|
||||
close(progfd);
|
||||
printf("[%s]\n", err ? "FAIL" : "PASS");
|
||||
return err;
|
||||
}
|
||||
|
||||
static int run_tests(int cgfd)
|
||||
{
|
||||
int passes = 0;
|
||||
int fails = 0;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(tests); ++i) {
|
||||
if (run_test_case(cgfd, &tests[i]))
|
||||
++fails;
|
||||
else
|
||||
++passes;
|
||||
}
|
||||
printf("Summary: %d PASSED, %d FAILED\n", passes, fails);
|
||||
return fails ? -1 : 0;
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
size_t inet6_prog_cnt;
|
||||
size_t inet_prog_cnt;
|
||||
int cgfd = -1;
|
||||
int err = 0;
|
||||
|
||||
struct program inet6_progs[] = {
|
||||
{BPF_CGROUP_INET6_BIND, bind6_prog_load, -1, "bind6",
|
||||
BPF_CGROUP_INET4_BIND},
|
||||
{BPF_CGROUP_INET6_CONNECT, connect6_prog_load, -1, "connect6",
|
||||
BPF_CGROUP_INET4_CONNECT},
|
||||
};
|
||||
inet6_prog_cnt = sizeof(inet6_progs) / sizeof(struct program);
|
||||
|
||||
struct program inet_progs[] = {
|
||||
{BPF_CGROUP_INET4_BIND, bind4_prog_load, -1, "bind4",
|
||||
BPF_CGROUP_INET6_BIND},
|
||||
{BPF_CGROUP_INET4_CONNECT, connect4_prog_load, -1, "connect4",
|
||||
BPF_CGROUP_INET6_CONNECT},
|
||||
};
|
||||
inet_prog_cnt = sizeof(inet_progs) / sizeof(struct program);
|
||||
if (argc < 2) {
|
||||
fprintf(stderr,
|
||||
"%s has to be run via %s.sh. Skip direct run.\n",
|
||||
argv[0], argv[0]);
|
||||
exit(err);
|
||||
}
|
||||
|
||||
if (setup_cgroup_environment())
|
||||
goto err;
|
||||
|
|
@ -559,12 +841,7 @@ static int run_test(void)
|
|||
if (join_cgroup(CG_PATH))
|
||||
goto err;
|
||||
|
||||
if (run_domain_test(AF_INET, cgfd, inet_progs, inet_prog_cnt, SERV4_IP,
|
||||
SERV4_PORT) == -1)
|
||||
goto err;
|
||||
|
||||
if (run_domain_test(AF_INET6, cgfd, inet6_progs, inet6_prog_cnt,
|
||||
SERV6_IP, SERV6_PORT) == -1)
|
||||
if (run_tests(cgfd))
|
||||
goto err;
|
||||
|
||||
goto out;
|
||||
|
|
@ -573,17 +850,5 @@ err:
|
|||
out:
|
||||
close(cgfd);
|
||||
cleanup_cgroup_environment();
|
||||
printf(err ? "### FAIL\n" : "### SUCCESS\n");
|
||||
return err;
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
if (argc < 2) {
|
||||
fprintf(stderr,
|
||||
"%s has to be run via %s.sh. Skip direct run.\n",
|
||||
argv[0], argv[0]);
|
||||
exit(0);
|
||||
}
|
||||
return run_test();
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue