diff options
Diffstat (limited to 'tools/testing/selftests/bpf/test_progs.c')
-rw-r--r-- | tools/testing/selftests/bpf/test_progs.c | 209 |
1 files changed, 204 insertions, 5 deletions
diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c index 25f0083a9b2e..c52bd90fbb34 100644 --- a/tools/testing/selftests/bpf/test_progs.c +++ b/tools/testing/selftests/bpf/test_progs.c @@ -10,6 +10,7 @@ #include <string.h> #include <assert.h> #include <stdlib.h> +#include <stdarg.h> #include <time.h> #include <linux/types.h> @@ -28,7 +29,7 @@ typedef __u16 __sum16; #include <sys/wait.h> #include <sys/types.h> #include <fcntl.h> - +#include <pthread.h> #include <linux/bpf.h> #include <linux/err.h> #include <bpf/bpf.h> @@ -39,6 +40,7 @@ typedef __u16 __sum16; #include "bpf_endian.h" #include "bpf_rlimit.h" #include "trace_helpers.h" +#include "flow_dissector_load.h" static int error_cnt, pass_cnt; static bool jit_enabled; @@ -53,9 +55,10 @@ static struct { } __packed pkt_v4 = { .eth.h_proto = __bpf_constant_htons(ETH_P_IP), .iph.ihl = 5, - .iph.protocol = 6, + .iph.protocol = IPPROTO_TCP, .iph.tot_len = __bpf_constant_htons(MAGIC_BYTES), .tcp.urg_ptr = 123, + .tcp.doff = 5, }; /* ipv6 test vector */ @@ -65,9 +68,10 @@ static struct { struct tcphdr tcp; } __packed pkt_v6 = { .eth.h_proto = __bpf_constant_htons(ETH_P_IPV6), - .iph.nexthdr = 6, + .iph.nexthdr = IPPROTO_TCP, .iph.payload_len = __bpf_constant_htons(MAGIC_BYTES), .tcp.urg_ptr = 123, + .tcp.doff = 5, }; #define _CHECK(condition, tag, duration, format...) ({ \ @@ -1780,6 +1784,15 @@ static void test_task_fd_query_tp(void) "sys_enter_read"); } +static int libbpf_debug_print(enum libbpf_print_level level, + const char *format, va_list args) +{ + if (level == LIBBPF_DEBUG) + return 0; + + return vfprintf(stderr, format, args); +} + static void test_reference_tracking() { const char *file = "./test_sk_lookup_kern.o"; @@ -1806,9 +1819,9 @@ static void test_reference_tracking() /* Expect verifier failure if test name has 'fail' */ if (strstr(title, "fail") != NULL) { - libbpf_set_print(NULL, NULL, NULL); + libbpf_set_print(NULL); err = !bpf_program__load(prog, "GPL", 0); - libbpf_set_print(printf, printf, NULL); + libbpf_set_print(libbpf_debug_print); } else { err = bpf_program__load(prog, "GPL", 0); } @@ -1912,6 +1925,189 @@ out: bpf_object__close(obj); } +#define CHECK_FLOW_KEYS(desc, got, expected) \ + CHECK(memcmp(&got, &expected, sizeof(got)) != 0, \ + desc, \ + "nhoff=%u/%u " \ + "thoff=%u/%u " \ + "addr_proto=0x%x/0x%x " \ + "is_frag=%u/%u " \ + "is_first_frag=%u/%u " \ + "is_encap=%u/%u " \ + "n_proto=0x%x/0x%x " \ + "sport=%u/%u " \ + "dport=%u/%u\n", \ + got.nhoff, expected.nhoff, \ + got.thoff, expected.thoff, \ + got.addr_proto, expected.addr_proto, \ + got.is_frag, expected.is_frag, \ + got.is_first_frag, expected.is_first_frag, \ + got.is_encap, expected.is_encap, \ + got.n_proto, expected.n_proto, \ + got.sport, expected.sport, \ + got.dport, expected.dport) + +static struct bpf_flow_keys pkt_v4_flow_keys = { + .nhoff = 0, + .thoff = sizeof(struct iphdr), + .addr_proto = ETH_P_IP, + .ip_proto = IPPROTO_TCP, + .n_proto = bpf_htons(ETH_P_IP), +}; + +static struct bpf_flow_keys pkt_v6_flow_keys = { + .nhoff = 0, + .thoff = sizeof(struct ipv6hdr), + .addr_proto = ETH_P_IPV6, + .ip_proto = IPPROTO_TCP, + .n_proto = bpf_htons(ETH_P_IPV6), +}; + +static void test_flow_dissector(void) +{ + struct bpf_flow_keys flow_keys; + struct bpf_object *obj; + __u32 duration, retval; + int err, prog_fd; + __u32 size; + + err = bpf_flow_load(&obj, "./bpf_flow.o", "flow_dissector", + "jmp_table", &prog_fd); + if (err) { + error_cnt++; + return; + } + + err = bpf_prog_test_run(prog_fd, 10, &pkt_v4, sizeof(pkt_v4), + &flow_keys, &size, &retval, &duration); + CHECK(size != sizeof(flow_keys) || err || retval != 1, "ipv4", + "err %d errno %d retval %d duration %d size %u/%lu\n", + err, errno, retval, duration, size, sizeof(flow_keys)); + CHECK_FLOW_KEYS("ipv4_flow_keys", flow_keys, pkt_v4_flow_keys); + + err = bpf_prog_test_run(prog_fd, 10, &pkt_v6, sizeof(pkt_v6), + &flow_keys, &size, &retval, &duration); + CHECK(size != sizeof(flow_keys) || err || retval != 1, "ipv6", + "err %d errno %d retval %d duration %d size %u/%lu\n", + err, errno, retval, duration, size, sizeof(flow_keys)); + CHECK_FLOW_KEYS("ipv6_flow_keys", flow_keys, pkt_v6_flow_keys); + + bpf_object__close(obj); +} + +static void *test_spin_lock(void *arg) +{ + __u32 duration, retval; + int err, prog_fd = *(u32 *) arg; + + err = bpf_prog_test_run(prog_fd, 10000, &pkt_v4, sizeof(pkt_v4), + NULL, NULL, &retval, &duration); + CHECK(err || retval, "", + "err %d errno %d retval %d duration %d\n", + err, errno, retval, duration); + pthread_exit(arg); +} + +static void test_spinlock(void) +{ + const char *file = "./test_spin_lock.o"; + pthread_t thread_id[4]; + struct bpf_object *obj; + int prog_fd; + int err = 0, i; + void *ret; + + err = bpf_prog_load(file, BPF_PROG_TYPE_CGROUP_SKB, &obj, &prog_fd); + if (err) { + printf("test_spin_lock:bpf_prog_load errno %d\n", errno); + goto close_prog; + } + for (i = 0; i < 4; i++) + assert(pthread_create(&thread_id[i], NULL, + &test_spin_lock, &prog_fd) == 0); + for (i = 0; i < 4; i++) + assert(pthread_join(thread_id[i], &ret) == 0 && + ret == (void *)&prog_fd); + goto close_prog_noerr; +close_prog: + error_cnt++; +close_prog_noerr: + bpf_object__close(obj); +} + +static void *parallel_map_access(void *arg) +{ + int err, map_fd = *(u32 *) arg; + int vars[17], i, j, rnd, key = 0; + + for (i = 0; i < 10000; i++) { + err = bpf_map_lookup_elem_flags(map_fd, &key, vars, BPF_F_LOCK); + if (err) { + printf("lookup failed\n"); + error_cnt++; + goto out; + } + if (vars[0] != 0) { + printf("lookup #%d var[0]=%d\n", i, vars[0]); + error_cnt++; + goto out; + } + rnd = vars[1]; + for (j = 2; j < 17; j++) { + if (vars[j] == rnd) + continue; + printf("lookup #%d var[1]=%d var[%d]=%d\n", + i, rnd, j, vars[j]); + error_cnt++; + goto out; + } + } +out: + pthread_exit(arg); +} + +static void test_map_lock(void) +{ + const char *file = "./test_map_lock.o"; + int prog_fd, map_fd[2], vars[17] = {}; + pthread_t thread_id[6]; + struct bpf_object *obj; + int err = 0, key = 0, i; + void *ret; + + err = bpf_prog_load(file, BPF_PROG_TYPE_CGROUP_SKB, &obj, &prog_fd); + if (err) { + printf("test_map_lock:bpf_prog_load errno %d\n", errno); + goto close_prog; + } + map_fd[0] = bpf_find_map(__func__, obj, "hash_map"); + if (map_fd[0] < 0) + goto close_prog; + map_fd[1] = bpf_find_map(__func__, obj, "array_map"); + if (map_fd[1] < 0) + goto close_prog; + + bpf_map_update_elem(map_fd[0], &key, vars, BPF_F_LOCK); + + for (i = 0; i < 4; i++) + assert(pthread_create(&thread_id[i], NULL, + &test_spin_lock, &prog_fd) == 0); + for (i = 4; i < 6; i++) + assert(pthread_create(&thread_id[i], NULL, + ¶llel_map_access, &map_fd[i - 4]) == 0); + for (i = 0; i < 4; i++) + assert(pthread_join(thread_id[i], &ret) == 0 && + ret == (void *)&prog_fd); + for (i = 4; i < 6; i++) + assert(pthread_join(thread_id[i], &ret) == 0 && + ret == (void *)&map_fd[i - 4]); + goto close_prog_noerr; +close_prog: + error_cnt++; +close_prog_noerr: + bpf_object__close(obj); +} + int main(void) { srand(time(NULL)); @@ -1939,6 +2135,9 @@ int main(void) test_reference_tracking(); test_queue_stack_map(QUEUE); test_queue_stack_map(STACK); + test_flow_dissector(); + test_spinlock(); + test_map_lock(); printf("Summary: %d PASSED, %d FAILED\n", pass_cnt, error_cnt); return error_cnt ? EXIT_FAILURE : EXIT_SUCCESS; |