Re: [PATCH net-next 13/14] selftests/bpf: Test skb_ext read from sk_skb stream verdict hook

On Fri Aug 14, 2026 at 4:14 PM CST, Jakub Sitnicki wrote:
> +	n = send(p1, test_payload, TEST_PAYLOAD_LEN, 0);
> +	if (!ASSERT_EQ(n, TEST_PAYLOAD_LEN, "send"))
> +		goto cleanup;
> +
> +	n = recv(c1, buf, sizeof(buf), 0);
send() and recv() are stream sockets,so either operation may return a short count
even though this will usually not happen on loopback. Maybe use send/receive helpers
or loop til TEST_PAYLOAD_LEN bytes is a better choice,the blocking recv() can leave
the test stuck instead of reporting a timeout when data path regresses.

cheers
Jack Wang