int blkcipher_walk_done(struct blkcipher_desc *desc, struct blkcipher_walk *walk, int err) { unsigned int nbytes = 0; #ifdef CONFIG_CRYPTO_FIPS if (unlikely(in_fips_err())) return (-EACCES); #endif if (likely(err >= 0)) { unsigned int n = walk->nbytes - err; if (likely(!(walk->flags & BLKCIPHER_WALK_SLOW))) n = blkcipher_done_fast(walk, n); else if (WARN_ON(err)) { err = -EINVAL; goto err; } else n = blkcipher_done_slow(walk, n); nbytes = walk->total - n; err = 0; } scatterwalk_done(&walk->in, 0, nbytes); scatterwalk_done(&walk->out, 1, nbytes); err: walk->total = nbytes; walk->nbytes = nbytes; if (nbytes) { crypto_yield(desc->flags); return blkcipher_walk_next(desc, walk); } if (walk->iv != desc->info) memcpy(desc->info, walk->iv, walk->ivsize); if (walk->buffer != walk->page) kfree(walk->buffer); if (walk->page) free_page((unsigned long)walk->page); return err; }
int blkcipher_walk_done(struct blkcipher_desc *desc, struct blkcipher_walk *walk, int err) { struct crypto_blkcipher *tfm = desc->tfm; unsigned int nbytes = 0; if (likely(err >= 0)) { unsigned int n = walk->nbytes - err; if (likely(!(walk->flags & BLKCIPHER_WALK_SLOW))) n = blkcipher_done_fast(walk, n); else if (WARN_ON(err)) { err = -EINVAL; goto err; } else n = blkcipher_done_slow(tfm, walk, n); nbytes = walk->total - n; err = 0; } scatterwalk_done(&walk->in, 0, nbytes); scatterwalk_done(&walk->out, 1, nbytes); err: walk->total = nbytes; walk->nbytes = nbytes; if (nbytes) { crypto_yield(desc->flags); return blkcipher_walk_next(desc, walk); } if (walk->iv != desc->info) memcpy(desc->info, walk->iv, crypto_blkcipher_ivsize(tfm)); if (walk->buffer != walk->page) kfree(walk->buffer); if (walk->page) free_page((unsigned long)walk->page); return err; }