static int pcrypt_aead_init_tfm(struct crypto_aead *tfm)
{
int cpu, cpu_index;
struct aead_instance *inst = aead_alg_instance(tfm);
struct pcrypt_instance_ctx *ictx = aead_instance_ctx(inst);
struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(tfm);
struct crypto_aead *cipher;
cpu_index = (unsigned int)atomic_inc_return(&ictx->tfm_count) %
cpumask_weight(cpu_online_mask);
ctx->cb_cpu = cpumask_first(cpu_online_mask);
for (cpu = 0; cpu < cpu_index; cpu++)
ctx->cb_cpu = cpumask_next(ctx->cb_cpu, cpu_online_mask);
cipher = crypto_spawn_aead(&ictx->spawn);
if (IS_ERR(cipher))
return PTR_ERR(cipher);
ctx->child = cipher;
crypto_aead_set_reqsize(tfm, sizeof(struct pcrypt_request) +
sizeof(struct aead_request) +
crypto_aead_reqsize(cipher));
return 0;
}
static int crypto_ccm_init_tfm(struct crypto_aead *tfm)
{
struct aead_instance *inst = aead_alg_instance(tfm);
struct ccm_instance_ctx *ictx = aead_instance_ctx(inst);
struct crypto_ccm_ctx *ctx = crypto_aead_ctx(tfm);
struct crypto_cipher *cipher;
struct crypto_ablkcipher *ctr;
unsigned long align;
int err;
cipher = crypto_spawn_cipher(&ictx->cipher);
if (IS_ERR(cipher))
return PTR_ERR(cipher);
ctr = crypto_spawn_skcipher(&ictx->ctr);
err = PTR_ERR(ctr);
if (IS_ERR(ctr))
goto err_free_cipher;
ctx->cipher = cipher;
ctx->ctr = ctr;
align = crypto_aead_alignmask(tfm);
align &= ~(crypto_tfm_ctx_alignment() - 1);
crypto_aead_set_reqsize(
tfm,
align + sizeof(struct crypto_ccm_req_priv_ctx) +
crypto_ablkcipher_reqsize(ctr));
return 0;
err_free_cipher:
crypto_free_cipher(cipher);
return err;
}
static int crypto_rfc4309_init_tfm(struct crypto_aead *tfm)
{
struct aead_instance *inst = aead_alg_instance(tfm);
struct crypto_aead_spawn *spawn = aead_instance_ctx(inst);
struct crypto_rfc4309_ctx *ctx = crypto_aead_ctx(tfm);
struct crypto_aead *aead;
unsigned long align;
aead = crypto_spawn_aead(spawn);
if (IS_ERR(aead))
return PTR_ERR(aead);
ctx->child = aead;
align = crypto_aead_alignmask(aead);
align &= ~(crypto_tfm_ctx_alignment() - 1);
crypto_aead_set_reqsize(
tfm,
sizeof(struct crypto_rfc4309_req_ctx) +
ALIGN(crypto_aead_reqsize(aead), crypto_tfm_ctx_alignment()) +
align + 32);
return 0;
}