RXRPC_MAXCALLS     30 include/rxrpc/packet.h #define RXRPC_CHANNELMASK	(RXRPC_MAXCALLS-1)	/* mask for channel ID */
RXRPC_MAXCALLS     32 include/rxrpc/packet.h #define RXRPC_CIDSHIFT		ilog2(RXRPC_MAXCALLS)	/* shift for connection ID */