diff options
Diffstat (limited to 'samples/bpf/test_overhead_user.c')
| -rw-r--r-- | samples/bpf/test_overhead_user.c | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/samples/bpf/test_overhead_user.c b/samples/bpf/test_overhead_user.c index 88717f8ec6ac..dbd86f7b1473 100644 --- a/samples/bpf/test_overhead_user.c +++ b/samples/bpf/test_overhead_user.c @@ -11,6 +11,8 @@ #include <unistd.h> #include <assert.h> #include <sys/wait.h> +#include <sys/socket.h> +#include <arpa/inet.h> #include <stdlib.h> #include <signal.h> #include <linux/bpf.h> @@ -20,6 +22,8 @@ #include <bpf/libbpf.h> #define MAX_CNT 1000000 +#define DUMMY_IP "127.0.0.1" +#define DUMMY_PORT 80 static struct bpf_link *links[2]; static struct bpf_object *obj; @@ -35,8 +39,8 @@ static __u64 time_get_ns(void) static void test_task_rename(int cpu) { - __u64 start_time; char buf[] = "test\n"; + __u64 start_time; int i, fd; fd = open("/proc/self/comm", O_WRONLY|O_TRUNC); @@ -57,26 +61,32 @@ static void test_task_rename(int cpu) close(fd); } -static void test_urandom_read(int cpu) +static void test_fib_table_lookup(int cpu) { + struct sockaddr_in addr; + char buf[] = "test\n"; __u64 start_time; - char buf[4]; int i, fd; - fd = open("/dev/urandom", O_RDONLY); + fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if (fd < 0) { - printf("couldn't open /dev/urandom\n"); + printf("couldn't open socket\n"); exit(1); } + memset((char *)&addr, 0, sizeof(addr)); + addr.sin_addr.s_addr = inet_addr(DUMMY_IP); + addr.sin_port = htons(DUMMY_PORT); + addr.sin_family = AF_INET; start_time = time_get_ns(); for (i = 0; i < MAX_CNT; i++) { - if (read(fd, buf, sizeof(buf)) < 0) { - printf("failed to read from /dev/urandom: %s\n", strerror(errno)); + if (sendto(fd, buf, strlen(buf), 0, + (struct sockaddr *)&addr, sizeof(addr)) < 0) { + printf("failed to start ping: %s\n", strerror(errno)); close(fd); return; } } - printf("urandom_read:%d: %lld events per sec\n", + printf("fib_table_lookup:%d: %lld events per sec\n", cpu, MAX_CNT * 1000000000ll / (time_get_ns() - start_time)); close(fd); } @@ -92,7 +102,7 @@ static void loop(int cpu, int flags) if (flags & 1) test_task_rename(cpu); if (flags & 2) - test_urandom_read(cpu); + test_fib_table_lookup(cpu); } static void run_perf_test(int tasks, int flags) @@ -179,7 +189,7 @@ int main(int argc, char **argv) if (test_flags & 0xC) { snprintf(filename, sizeof(filename), - "%s_kprobe_kern.o", argv[0]); + "%s_kprobe.bpf.o", argv[0]); printf("w/KPROBE\n"); err = load_progs(filename); @@ -191,7 +201,7 @@ int main(int argc, char **argv) if (test_flags & 0x30) { snprintf(filename, sizeof(filename), - "%s_tp_kern.o", argv[0]); + "%s_tp.bpf.o", argv[0]); printf("w/TRACEPOINT\n"); err = load_progs(filename); if (!err) @@ -202,7 +212,7 @@ int main(int argc, char **argv) if (test_flags & 0xC0) { snprintf(filename, sizeof(filename), - "%s_raw_tp_kern.o", argv[0]); + "%s_raw_tp.bpf.o", argv[0]); printf("w/RAW_TRACEPOINT\n"); err = load_progs(filename); if (!err) |