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selftests/bpf: Optionally open a dedicated namespace to run test in it

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Some tests are serialized to prevent interference with others.

Open a dedicated network namespace when a test name starts with 'ns_' to
allow more test parallelization. Use the test name as namespace name to
avoid conflict between namespaces.

Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet@bootlin.com>
Link: https://lore.kernel.org/r/20250219-b4-tc_links-v2-2-14504db136b7@bootlin.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Bastien Curutchet (eBPF Foundation)
2025-02-19 15:53:01 +01:00
committed by Alexei Starovoitov
parent 4a06c5251a
commit c047e0e0e4
1 changed files with 12 additions and 0 deletions
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12
tools/testing/selftests/bpf/test_progs.c
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@@ -1365,10 +1365,19 @@ static int recv_message(int sock, struct msg *msg)
return ret;
}
static bool ns_is_needed(const char *test_name)
{
if (strlen(test_name) < 3)
return false;
return !strncmp(test_name, "ns_", 3);
}
static void run_one_test(int test_num)
{
struct prog_test_def *test = &prog_test_defs[test_num];
struct test_state *state = &test_states[test_num];
struct netns_obj *ns = NULL;
env.test = test;
env.test_state = state;
@@ -1376,10 +1385,13 @@ static void run_one_test(int test_num)
stdio_hijack(&state->log_buf, &state->log_cnt);
watchdog_start();
if (ns_is_needed(test->test_name))
ns = netns_new(test->test_name, true);
if (test->run_test)
test->run_test();
else if (test->run_serial_test)
test->run_serial_test();
netns_free(ns);
watchdog_stop();
/* ensure last sub-test is finalized properly */