linux-kernel - [PATCH 4.9 078/130] libceph: introduce ceph_x_encrypt

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Message-Id: <20170124075538.127139239@linuxfoundation.org>
Date:   Tue, 24 Jan 2017 08:55:18 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ilya Dryomov <idryomov@...il.com>,
        Sage Weil <sage@...hat.com>
Subject: [PATCH 4.9 078/130] libceph: introduce ceph_x_encrypt_offset()

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ilya Dryomov <idryomov@...il.com>

commit 55d9cc834f933698fc864f0d36f3cca533d30a8d upstream.

Signed-off-by: Ilya Dryomov <idryomov@...il.com>
Reviewed-by: Sage Weil <sage@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/ceph/auth_x.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/net/ceph/auth_x.c
+++ b/net/ceph/auth_x.c
@@ -39,10 +39,14 @@ static int ceph_x_should_authenticate(st
 	return need != 0;
 }
 
+static int ceph_x_encrypt_offset(void)
+{
+	return sizeof(u32) + sizeof(struct ceph_x_encrypt_header);
+}
+
 static int ceph_x_encrypt_buflen(int ilen)
 {
-	return sizeof(struct ceph_x_encrypt_header) + ilen + 16 +
-		sizeof(u32);
+	return ceph_x_encrypt_offset() + ilen + 16;
 }
 
 static int ceph_x_encrypt(struct ceph_crypto_key *secret,