netdev - [PATHC bpf v5 2/3] selftests, bpf: Fix test_txmsg_ingress

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Date:   Tue, 12 Oct 2021 14:57:04 +0800
From:   Liu Jian <liujian56@...wei.com>
To:     <john.fastabend@...il.com>, <daniel@...earbox.net>,
        <jakub@...udflare.com>, <lmb@...udflare.com>,
        <davem@...emloft.net>, <kuba@...nel.org>, <ast@...nel.org>,
        <andrii@...nel.org>, <kafai@...com>, <songliubraving@...com>,
        <yhs@...com>, <kpsingh@...nel.org>, <netdev@...r.kernel.org>,
        <bpf@...r.kernel.org>, <xiyou.wangcong@...il.com>
CC:     <liujian56@...wei.com>
Subject: [PATHC bpf v5 2/3] selftests, bpf: Fix test_txmsg_ingress_parser error

After "skmsg: lose offset info in sk_psock_skb_ingress", the test case
with ktls failed. This because ktls parser(tls_read_size) return value
is 285 not 256.

the case like this:
	tls_sk1 --> redir_sk --> tls_sk2
tls_sk1 sent out 512 bytes data, after tls related processing redir_sk
recved 570 btyes data, and redirect 512 (skb_use_parser) bytes data to
tls_sk2; but tls_sk2 needs 285 * 2 bytes data, receive timeout occurred.

Signed-off-by: Liu Jian <liujian56@...wei.com>
---
 tools/testing/selftests/bpf/test_sockmap.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c
index eefd445b96fc..06924917ad77 100644
--- a/tools/testing/selftests/bpf/test_sockmap.c
+++ b/tools/testing/selftests/bpf/test_sockmap.c
@@ -1680,6 +1680,8 @@ static void test_txmsg_ingress_parser(int cgrp, struct sockmap_options *opt)
 {
 	txmsg_pass = 1;
 	skb_use_parser = 512;
+	if (ktls == 1)
+		skb_use_parser = 570;
 	opt->iov_length = 256;
 	opt->iov_count = 1;
 	opt->rate = 2;
-- 
2.17.1