RPC_CALLHDRSIZE 139 include/linux/sunrpc/msg_prot.h (RPC_CALLHDRSIZE + 2*(2+RPC_MAX_AUTH_SIZE/4)) RPC_CALLHDRSIZE 832 net/sunrpc/clnt.c req->rq_callsize = RPC_CALLHDRSIZE + (slack << 1) + proc->p_arglen;