---
name: "struct_rs_control"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/struct_rs_control"
---

# struct\_rs\_control(9)

rs control structure

## NAME

struct\_rs\_control - rs control structure

## SYNOPSIS

```
struct rs_control {
  int mm;
  int nn;
  uint16_t * alpha_to;
  uint16_t * index_of;
  uint16_t * genpoly;
  int nroots;
  int fcr;
  int prim;
  int iprim;
  int gfpoly;
  int (* gffunc) (int);
  int users;
  struct list_head list;
};
```

## MEMBERS

mm

Bits per symbol

nn

Symbols per block (= (1\<\<mm)-1)

alpha\_to

log lookup table

index\_of

Antilog lookup table

genpoly

Generator polynomial

nroots

Number of generator roots = number of parity symbols

fcr

First consecutive root, index form

prim

Primitive element, index form

iprim

prim-th root of 1, index form

gfpoly

The primitive generator polynominal

gffunc

Function to generate the field, if non-canonical representation

users

Users of this structure

list

List entry for the rs control list

## AUTHOR

**Thomas Gleixner** \<tglx@linutronix.de\>

Author.

## COPYRIGHT