From 3599bc5101b36d9ff88da17fe65b001aeadd9c62 Mon Sep 17 00:00:00 2001 From: Yucong Sun Date: Wed, 25 Aug 2021 11:47:45 -0700 Subject: selftests/bpf: Reduce more flakyness in sockmap_listen This patch adds similar retry logic to more places where read() is used, to reduce flakyness in slow CI environment. Signed-off-by: Yucong Sun Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20210825184745.2680830-1-fallentree@fb.com --- .../testing/selftests/bpf/prog_tests/sockmap_listen.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c index 6a5df28f9a3d..5c5979046523 100644 --- a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c +++ b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c @@ -949,6 +949,7 @@ static void redir_to_connected(int family, int sotype, int sock_mapfd, int err, n; u32 key; char b; + int retries = 100; zero_verdict_count(verd_mapfd); @@ -1001,10 +1002,15 @@ static void redir_to_connected(int family, int sotype, int sock_mapfd, goto close_peer1; if (pass != 1) FAIL("%s: want pass count 1, have %d", log_prefix, pass); - +again: n = read(c0, &b, 1); - if (n < 0) + if (n < 0) { + if (errno == EAGAIN && retries--) { + usleep(1000); + goto again; + } FAIL_ERRNO("%s: read", log_prefix); + } if (n == 0) FAIL("%s: incomplete read", log_prefix); @@ -1926,6 +1932,7 @@ static void unix_inet_redir_to_connected(int family, int type, int sock_mapfd, int sfd[2]; u32 key; char b; + int retries = 100; zero_verdict_count(verd_mapfd); @@ -1956,9 +1963,15 @@ static void unix_inet_redir_to_connected(int family, int type, int sock_mapfd, if (pass != 1) FAIL("%s: want pass count 1, have %d", log_prefix, pass); +again: n = read(mode == REDIR_INGRESS ? p0 : c0, &b, 1); - if (n < 0) + if (n < 0) { + if (errno == EAGAIN && retries--) { + usleep(1000); + goto again; + } FAIL_ERRNO("%s: read", log_prefix); + } if (n == 0) FAIL("%s: incomplete read", log_prefix); -- cgit v1.2.3