/*
* Encrypt / decrypt data from one bio to another one (can be the same one)
*/
static int crypt_convert(struct crypt_config *cc,
struct convert_context *ctx)
{
int r;
atomic_set(&ctx->cc_pending, 1);
while(ctx->idx_in < ctx->bio_in->bi_vcnt &&
ctx->idx_out < ctx->bio_out->bi_vcnt) {
crypt_alloc_req(cc, ctx);
atomic_inc(&ctx->cc_pending);
r = crypt_convert_block(cc, ctx, ctx->req);
switch (r) {
/* async */
case -EBUSY:
wait_for_completion(&ctx->restart);
INIT_COMPLETION(ctx->restart);
/* fall through*/
case -EINPROGRESS:
ctx->req = NULL;
ctx->cc_sector++;
continue;
/* sync */
case 0:
atomic_dec(&ctx->cc_pending);
ctx->cc_sector++;
cond_resched();
continue;
/* error */
default:
atomic_dec(&ctx->cc_pending);
return r;
}
}
return 0;
}
/*
* Encrypt / decrypt data from one bio to another one (can be the same one)
*/
static int crypt_convert(struct crypt_config *cc,
struct convert_context *ctx)
{
int r;
atomic_set(&ctx->cc_pending, 1);
while (ctx->iter_in.bi_size && ctx->iter_out.bi_size) {
crypt_alloc_req(cc, ctx);
atomic_inc(&ctx->cc_pending);
r = crypt_convert_block(cc, ctx, ctx->req);
switch (r) {
/* async */
case -EINPROGRESS:
case -EBUSY:
wait_for_completion(&ctx->restart);
reinit_completion(&ctx->restart);
ctx->req = NULL;
ctx->cc_sector++;
continue;
/* sync */
case 0:
atomic_dec(&ctx->cc_pending);
ctx->cc_sector++;
cond_resched();
continue;
/* error */
default:
atomic_dec(&ctx->cc_pending);
return r;
}
}
return 0;
}
