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selftests/bpf: Improve tc_tunnel test reliability

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A test failure was discovered in BPF CI [1] caused by connection timeout.
The current test timeout of 500ms is insufficient for CI environments,
particularly under high load.

While the optimal timeout is unclear, this test was converted from the
original test_tc_tunnel.sh script. The original script used nc with "-w 1"
to specify a 1-second timeout [2]. Therefore, this test restores the
timeout to 1s.

Test:
./test_progs -a tc_tunnel
 #478/1   tc_tunnel/ipip_none:OK
 #478/2   tc_tunnel/ipip6_none:OK
 #478/3   tc_tunnel/ip6tnl_none:OK
 #478/4   tc_tunnel/sit_none:OK
 #478/5   tc_tunnel/vxlan_eth:OK
 #478/6   tc_tunnel/ip6vxlan_eth:OK
 #478/7   tc_tunnel/gre_none:OK
 #478/8   tc_tunnel/gre_eth:OK
 #478/9   tc_tunnel/gre_mpls:OK
 #478/10  tc_tunnel/ip6gre_none:OK
 #478/11  tc_tunnel/ip6gre_eth:OK
 #478/12  tc_tunnel/ip6gre_mpls:OK
 #478/13  tc_tunnel/udp_none:OK
 #478/14  tc_tunnel/udp_eth:OK
 #478/15  tc_tunnel/udp_mpls:OK
 #478/16  tc_tunnel/ip6udp_none:OK
 #478/17  tc_tunnel/ip6udp_eth:OK
 #478/18  tc_tunnel/ip6udp_mpls:OK
 #478     tc_tunnel:OK
 Summary: 1/18 PASSED, 0 SKIPPED, 0 FAILED

[1] https://github.com/kernel-patches/bpf/actions/runs/22674350732/job/65728072723
[2] https://lore.kernel.org/all/20251027-tc_tunnel-v3-4-505c12019f9d@bootlin.com/

Cc: Jiayuan Chen <jiayuan.chen@linux.dev>
Signed-off-by: Jiayuan Chen <jiayuan.chen@shopee.com>
Link: https://lore.kernel.org/r/20260312083615.31835-1-jiayuan.chen@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jiayuan Chen 2026-03-12 16:35:54 +08:00 committed by Alexei Starovoitov
parent 70b5f3f782
commit 2790db208b
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/bpf/prog_tests/test_tc_tunnel.c
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@ -168,7 +168,7 @@ static int check_server_rx_data(struct subtest_cfg *cfg,
static struct connection *connect_client_to_server(struct subtest_cfg *cfg)
{
struct network_helper_opts opts = {.timeout_ms = 500};
struct network_helper_opts opts = {.timeout_ms = 1000};
int family = cfg->ipproto == 6 ? AF_INET6 : AF_INET;
struct connection *conn = NULL;
int client_fd, server_fd;