smb: client: make use of smbdirect_socket.rdma.legacy_iwarp

Currently it's write only for the client, but it will likely be use
for debugging later.

Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: metze-samba

fs/smb/client/smbdirect.c

@@ -318,7 +318,7 @@ static int smbd_conn_upcall(
 				ird32 = min_t(u32, ird32, U8_MAX);
 				ord32 = min_t(u32, ord32, U8_MAX);
 
-				info->legacy_iwarp = true;
+				sc->rdma.legacy_iwarp = true;
 				peer_initiator_depth = (u8)ird32;
 				peer_responder_resources = (u8)ord32;
 			}

fs/smb/client/smbdirect.h

@@ -50,8 +50,6 @@ struct smbd_connection {
 	int protocol;
 
 	/* Memory registrations */
-	/* Maximum number of RDMA read/write outstanding on this connection */
-	bool legacy_iwarp;
 	/* Maximum number of pages in a single RDMA write/read on this connection */
 	int max_frmr_depth;
 	/*