diff options
Diffstat (limited to 'tools/testing/selftests/net/tcp_mmap.c')
| -rw-r--r-- | tools/testing/selftests/net/tcp_mmap.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/tools/testing/selftests/net/tcp_mmap.c b/tools/testing/selftests/net/tcp_mmap.c index 6e59b1461dcc..4fcce5150850 100644 --- a/tools/testing/selftests/net/tcp_mmap.c +++ b/tools/testing/selftests/net/tcp_mmap.c @@ -153,6 +153,19 @@ static void *mmap_large_buffer(size_t need, size_t *allocated) return buffer; } +static uint32_t tcp_info_get_rcv_mss(int fd) +{ + socklen_t sz = sizeof(struct tcp_info); + struct tcp_info info; + + if (getsockopt(fd, IPPROTO_TCP, TCP_INFO, &info, &sz)) { + fprintf(stderr, "Error fetching TCP_INFO\n"); + return 0; + } + + return info.tcpi_rcv_mss; +} + void *child_thread(void *arg) { unsigned char digest[SHA256_DIGEST_LENGTH]; @@ -288,7 +301,7 @@ end: total_usec = 1000000*ru.ru_utime.tv_sec + ru.ru_utime.tv_usec + 1000000*ru.ru_stime.tv_sec + ru.ru_stime.tv_usec; printf("received %lg MB (%lg %% mmap'ed) in %lg s, %lg Gbit\n" - " cpu usage user:%lg sys:%lg, %lg usec per MB, %lu c-switches\n", + " cpu usage user:%lg sys:%lg, %lg usec per MB, %lu c-switches, rcv_mss %u\n", total / (1024.0 * 1024.0), 100.0*total_mmap/total, (double)delta_usec / 1000000.0, @@ -296,7 +309,8 @@ end: (double)ru.ru_utime.tv_sec + (double)ru.ru_utime.tv_usec / 1000000.0, (double)ru.ru_stime.tv_sec + (double)ru.ru_stime.tv_usec / 1000000.0, (double)total_usec/mb, - ru.ru_nvcsw); + ru.ru_nvcsw, + tcp_info_get_rcv_mss(fd)); } error: munmap(buffer, buffer_sz); |