cifs: Always update signing key of first channel

Update signing key of first channel whenever generating the master
sigining/encryption/decryption keys rather than only in cifs_mount().

This also fixes reconnect when re-establishing smb sessions to other
servers.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
index 8650123..387c887 100644 (file)
--- a/fs/cifs/smb2transport.c
+++ b/fs/cifs/smb2transport.c
@@ -407,6 +407,10 @@ generate_smb3signingkey(struct cifs_ses *ses,
                                  SMB3_SIGN_KEY_SIZE);
                if (rc)
                        return rc;
+
+               memcpy(ses->chans[0].signkey, ses->smb3signingkey,
+                      SMB3_SIGN_KEY_SIZE);
+
                rc = generate_key(ses, ptriplet->encryption.label,
                                  ptriplet->encryption.context,
                                  ses->smb3encryptionkey,