From: Jianguo Wu <wujianguo@chinatelecom.cn>
Date: Thu, 27 May 2021 23:54:24 +0000 (-0700)
Subject: mptcp: fix pr_debug in mptcp_token_new_connect
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2f1af441fd5dd5caf0807bb19ce9bbf9325ce534;p=linux.git

mptcp: fix pr_debug in mptcp_token_new_connect

After commit 2c5ebd001d4f ("mptcp: refactor token container"),
pr_debug() is called before mptcp_crypto_key_gen_sha() in
mptcp_token_new_connect(), so the output local_key, token and
idsn are 0, like:

  MPTCP: ssk=00000000f6b3c4a2, local_key=0, token=0, idsn=0

Move pr_debug() after mptcp_crypto_key_gen_sha().

Fixes: 2c5ebd001d4f ("mptcp: refactor token container")
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/net/mptcp/token.c b/net/mptcp/token.c
index 8f0270a780ce5..72a24e63b1314 100644
--- a/net/mptcp/token.c
+++ b/net/mptcp/token.c
@@ -156,9 +156,6 @@ int mptcp_token_new_connect(struct sock *sk)
 	int retries = TOKEN_MAX_RETRIES;
 	struct token_bucket *bucket;
 
-	pr_debug("ssk=%p, local_key=%llu, token=%u, idsn=%llu\n",
-		 sk, subflow->local_key, subflow->token, subflow->idsn);
-
 again:
 	mptcp_crypto_key_gen_sha(&subflow->local_key, &subflow->token,
 				 &subflow->idsn);
@@ -172,6 +169,9 @@ again:
 		goto again;
 	}
 
+	pr_debug("ssk=%p, local_key=%llu, token=%u, idsn=%llu\n",
+		 sk, subflow->local_key, subflow->token, subflow->idsn);
+
 	WRITE_ONCE(msk->token, subflow->token);
 	__sk_nulls_add_node_rcu((struct sock *)msk, &bucket->msk_chain);
 	bucket->chain_len++;