C++ (Cpp) qat_crypto_get_instance_node Examples

Example #1

static int qat_alg_aead_setkey(struct crypto_aead *tfm, const uint8_t *key,
			       unsigned int keylen)
{
	struct qat_alg_aead_ctx *ctx = crypto_aead_ctx(tfm);
	struct device *dev;

	spin_lock(&ctx->lock);
	if (ctx->enc_cd) {
		/* rekeying */
		dev = &GET_DEV(ctx->inst->accel_dev);
		memset(ctx->enc_cd, 0, sizeof(*ctx->enc_cd));
		memset(ctx->dec_cd, 0, sizeof(*ctx->dec_cd));
		memset(&ctx->enc_fw_req, 0, sizeof(ctx->enc_fw_req));
		memset(&ctx->dec_fw_req, 0, sizeof(ctx->dec_fw_req));
	} else {
		/* new key */
		int node = get_current_node();
		struct qat_crypto_instance *inst =
				qat_crypto_get_instance_node(node);
		if (!inst) {
			spin_unlock(&ctx->lock);
			return -EINVAL;
		}

		dev = &GET_DEV(inst->accel_dev);
		ctx->inst = inst;
		ctx->enc_cd = dma_zalloc_coherent(dev, sizeof(*ctx->enc_cd),
						  &ctx->enc_cd_paddr,
						  GFP_ATOMIC);
		if (!ctx->enc_cd) {
			spin_unlock(&ctx->lock);
			return -ENOMEM;
		}
		ctx->dec_cd = dma_zalloc_coherent(dev, sizeof(*ctx->dec_cd),
						  &ctx->dec_cd_paddr,
						  GFP_ATOMIC);
		if (!ctx->dec_cd) {
			spin_unlock(&ctx->lock);
			goto out_free_enc;
		}
	}
	spin_unlock(&ctx->lock);
	if (qat_alg_aead_init_sessions(tfm, key, keylen,
				       ICP_QAT_HW_CIPHER_CBC_MODE))
		goto out_free_all;

	return 0;

out_free_all:
	memset(ctx->dec_cd, 0, sizeof(struct qat_alg_cd));
	dma_free_coherent(dev, sizeof(struct qat_alg_cd),
			  ctx->dec_cd, ctx->dec_cd_paddr);
	ctx->dec_cd = NULL;
out_free_enc:
	memset(ctx->enc_cd, 0, sizeof(struct qat_alg_cd));
	dma_free_coherent(dev, sizeof(struct qat_alg_cd),
			  ctx->enc_cd, ctx->enc_cd_paddr);
	ctx->enc_cd = NULL;
	return -ENOMEM;
}

Example #2

File: qat_asym_algs.c Project: DenisLug/mptcp

static int qat_rsa_init_tfm(struct crypto_akcipher *tfm)
{
	struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
	struct qat_crypto_instance *inst =
			qat_crypto_get_instance_node(get_current_node());

	if (!inst)
		return -EINVAL;

	ctx->key_sz = 0;
	ctx->inst = inst;
	return 0;
}

Example #3

File: qat_asym_algs.c Project: 01org/thunderbolt-software-kernel-tree

static int qat_dh_init_tfm(struct crypto_kpp *tfm)
{
	struct qat_dh_ctx *ctx = kpp_tfm_ctx(tfm);
	struct qat_crypto_instance *inst =
			qat_crypto_get_instance_node(get_current_node());

	if (!inst)
		return -EINVAL;

	ctx->p_size = 0;
	ctx->g2 = false;
	ctx->inst = inst;
	return 0;
}