[PATCH bpf-next v3 05/16] selftests: xsk: simplify the retry code
From: Magnus Karlsson <hidden>
Date: 2021-08-25 09:38:03
Also in:
netdev
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [selftests] (test runners & infrastructure), kernel selftest framework, the rest, xdp (express data path) · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Shuah Khan, Linus Torvalds, David S. Miller, Jakub Kicinski, Jesper Dangaard Brouer, John Fastabend
From: Magnus Karlsson <magnus.karlsson@intel.com> Simplify the retry code and make it more efficient by waiting first, instead of trying immediately which always fails due to the asynchronous nature of xsk socket close. Also decrease the wait time to significantly lower the run-time of the test suite. Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> --- tools/testing/selftests/bpf/xdpxceiver.c | 23 ++++++++++------------- tools/testing/selftests/bpf/xdpxceiver.h | 2 +- 2 files changed, 11 insertions(+), 14 deletions(-)
diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index f221bc5dae17..b7d193a96083 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c@@ -745,24 +745,19 @@ static void thread_common_ops(struct ifobject *ifobject, void *bufs) if (bufs == MAP_FAILED) exit_with_error(errno); - xsk_configure_umem(ifobject, bufs, 0); - ifobject->umem = ifobject->umem_arr[0]; - ret = xsk_configure_socket(ifobject, 0); - - /* Retry Create Socket if it fails as xsk_socket__create() - * is asynchronous - */ - while (ret && ctr < SOCK_RECONF_CTR) { + while (ctr++ < SOCK_RECONF_CTR) { xsk_configure_umem(ifobject, bufs, 0); ifobject->umem = ifobject->umem_arr[0]; ret = xsk_configure_socket(ifobject, 0); + if (!ret) + break; + + /* Retry Create Socket if it fails as xsk_socket__create() is asynchronous */ usleep(USLEEP_MAX); - ctr++; + if (ctr >= SOCK_RECONF_CTR) + exit_with_error(-ret); } - if (ctr >= SOCK_RECONF_CTR) - exit_with_error(ret); - ifobject->umem = ifobject->umem_arr[0]; ifobject->xsk = ifobject->xsk_arr[0];
@@ -1125,8 +1120,10 @@ int main(int argc, char **argv) ksft_set_plan(TEST_MODE_MAX * TEST_TYPE_MAX); for (i = 0; i < TEST_MODE_MAX; i++) { - for (j = 0; j < TEST_TYPE_MAX; j++) + for (j = 0; j < TEST_TYPE_MAX; j++) { run_pkt_test(i, j); + usleep(USLEEP_MAX); + } } cleanup:
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 02b7d0d6f45d..1c94230c351a 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h@@ -35,7 +35,7 @@ #define UDP_PKT_SIZE (IP_PKT_SIZE - sizeof(struct iphdr)) #define UDP_PKT_DATA_SIZE (UDP_PKT_SIZE - sizeof(struct udphdr)) #define EOT (-1) -#define USLEEP_MAX 200000 +#define USLEEP_MAX 10000 #define SOCK_RECONF_CTR 10 #define BATCH_SIZE 64 #define POLL_TMOUT 1000
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2.29.0