Update the existing packet socket test to include a test for the sockopt PACKET_STATISTICS.
Signed-off-by: Joe Damato <[email protected]> --- tools/testing/selftests/net/psock_snd.c | 32 ++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/psock_snd.c b/tools/testing/selftests/net/psock_snd.c index edf1e6f80d41..5be481a3d2bd 100644 --- a/tools/testing/selftests/net/psock_snd.c +++ b/tools/testing/selftests/net/psock_snd.c @@ -359,6 +359,34 @@ static void parse_opts(int argc, char **argv) error(1, 0, "option gso (-g) requires csum offload (-c)"); } +static void check_packet_stats(int fd) +{ + struct tpacket_stats st = {}; + socklen_t len = sizeof(st); + + if (getsockopt(fd, SOL_PACKET, PACKET_STATISTICS, &st, &len)) + error(1, errno, "getsockopt packet statistics"); + + if (st.tp_packets != 1) + error(1, 0, "stats: tp_packets %u != 1", st.tp_packets); + + if (st.tp_drops != 0) + error(1, 0, "stats: tp_drops %u != 0", st.tp_drops); + + /* verify clear on read */ + memset(&st, 0xff, sizeof(st)); + len = sizeof(st); + + if (getsockopt(fd, SOL_PACKET, PACKET_STATISTICS, &st, &len)) + error(1, errno, "getsockopt packet statistics"); + + if (st.tp_packets != 0) + error(1, 0, "stats: tp_packets %u != 0 after clear", st.tp_packets); + + if (st.tp_drops != 0) + error(1, 0, "stats: tp_drops %u != 0 after clear", st.tp_drops); +} + static void run_test(void) { int fdr, fds, total_len; @@ -369,9 +397,11 @@ static void run_test(void) total_len = do_tx(); /* BPF filter accepts only this length, vlan changes MAC */ - if (cfg_payload_len == DATA_LEN && !cfg_use_vlan) + if (cfg_payload_len == DATA_LEN && !cfg_use_vlan) { do_rx(fds, total_len - sizeof(struct virtio_net_hdr), tbuf + sizeof(struct virtio_net_hdr)); + check_packet_stats(fds); + } do_rx(fdr, cfg_payload_len, tbuf + total_len - cfg_payload_len); -- 2.52.0
