[sheepdog] [PATCH 1/9] add forward error correction for erasure code

[Hitoshi Mitake]

> +
> +static int fec_initialized;
> +static void init_fec(void)
> +{
> +	generate_gf();
> +	_init_mul_table();
> +	fec_initialized = 1;
> +}
> +
> +/*
> + * This section contains the proper FEC encoding/decoding routines.
> + * The encoding matrix is computed starting with a Vandermonde matrix,
> + * and then transforming it into a systematic matrix.
> + */
> +
> +#define FEC_MAGIC	0xFECC0DEC
> +
> +void fec_free(struct fec *p)
> +{
> +	assert(p != NULL && p->magic == (((FEC_MAGIC ^ p->k) ^ p->n) ^
> +					 (unsigned long) (p->enc_matrix)));
> +	free(p->enc_matrix);
> +	free(p);
> +}
> +
> +struct fec *fec_new(unsigned short k, unsigned short n)
> +{
> +	unsigned row, col;
> +	uint8_t *p, *tmp_m;
> +
> +	struct fec *retval;
> +
> +	if (fec_initialized == 0)
> +		init_fec();

Let's call init_fec() in main() of sheep and remove fec_initialized.

Thanks,
Hitoshi