netdev - [PATCH net-next] mptcp: zero token hash at creation time.

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Message-Id: <9c1619337f0fa54112c0fe6f0e0100ded392ac3e.1595431172.git.pabeni@redhat.com>
Date:   Wed, 22 Jul 2020 17:20:50 +0200
From:   Paolo Abeni <pabeni@...hat.com>
To:     netdev@...r.kernel.org
Cc:     mptcp@...ts.01.org, "David S. Miller" <davem@...emloft.net>
Subject: [PATCH net-next] mptcp: zero token hash at creation time.

Otherwise the 'chain_len' filed will carry random values,
some token creation calls will fail due to excessive chain
length, causing unexpected fallback to TCP.

Fixes: 2c5ebd001d4f ("mptcp: refactor token container")
Reviewed-by: Mat Martineau <mathew.j.martineau@...ux.intel.com>
Tested-by: Christoph Paasch <cpaasch@...le.com>
Signed-off-by: Paolo Abeni <pabeni@...hat.com>
---
 net/mptcp/token.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mptcp/token.c b/net/mptcp/token.c
index b25b390dbbff..97cfc45bcc4f 100644
--- a/net/mptcp/token.c
+++ b/net/mptcp/token.c
@@ -368,7 +368,7 @@ void __init mptcp_token_init(void)
 					     sizeof(struct token_bucket),
 					     0,
 					     20,/* one slot per 1MB of memory */
-					     0,
+					     HASH_ZERO,
 					     NULL,
 					     &token_mask,
 					     0,
-- 
2.26.2