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bpf: sockmap, test for unconnected af_unix sock

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Add test to sockmap_basic to ensure af_unix sockets that are not connected
can not be added to the map. Ensure we keep DGRAM sockets working however
as these will not be connected typically.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/r/20231201180139.328529-3-john.fastabend@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
This commit is contained in:
John Fastabend
2023-12-01 10:01:39 -08:00
committed by Martin KaFai Lau
parent 8d6650646c
commit 50d96f05af
1 changed files with 34 additions and 0 deletions
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34
tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
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@@ -524,6 +524,37 @@ out:
test_sockmap_pass_prog__destroy(pass);
}
static void test_sockmap_unconnected_unix(void)
{
int err, map, stream = 0, dgram = 0, zero = 0;
struct test_sockmap_pass_prog *skel;
skel = test_sockmap_pass_prog__open_and_load();
if (!ASSERT_OK_PTR(skel, "open_and_load"))
return;
map = bpf_map__fd(skel->maps.sock_map_rx);
stream = xsocket(AF_UNIX, SOCK_STREAM, 0);
if (stream < 0)
return;
dgram = xsocket(AF_UNIX, SOCK_DGRAM, 0);
if (dgram < 0) {
close(stream);
return;
}
err = bpf_map_update_elem(map, &zero, &stream, BPF_ANY);
ASSERT_ERR(err, "bpf_map_update_elem(stream)");
err = bpf_map_update_elem(map, &zero, &dgram, BPF_ANY);
ASSERT_OK(err, "bpf_map_update_elem(dgram)");
close(stream);
close(dgram);
}
void test_sockmap_basic(void)
{
if (test__start_subtest("sockmap create_update_free"))
@@ -566,4 +597,7 @@ void test_sockmap_basic(void)
test_sockmap_skb_verdict_fionread(false);
if (test__start_subtest("sockmap skb_verdict msg_f_peek"))
test_sockmap_skb_verdict_peek();
if (test__start_subtest("sockmap unconnected af_unix"))
test_sockmap_unconnected_unix();
}