939066d965
This patch adds public API implementation to vhost crypto. Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com> Acked-by: Jay Zhou <jianjay.zhou@huawei.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
1284 lines
32 KiB
C
1284 lines
32 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2017-2018 Intel Corporation
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*/
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#include <rte_malloc.h>
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#include <rte_hash.h>
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#include <rte_jhash.h>
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#include <rte_mbuf.h>
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#include <rte_cryptodev.h>
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#include "rte_vhost_crypto.h"
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#include "vhost.h"
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#include "vhost_user.h"
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#include "virtio_crypto.h"
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#define INHDR_LEN (sizeof(struct virtio_crypto_inhdr))
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#define IV_OFFSET (sizeof(struct rte_crypto_op) + \
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sizeof(struct rte_crypto_sym_op))
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#ifdef RTE_LIBRTE_VHOST_DEBUG
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#define VC_LOG_ERR(fmt, args...) \
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RTE_LOG(ERR, USER1, "[%s] %s() line %u: " fmt "\n", \
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"Vhost-Crypto", __func__, __LINE__, ## args)
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#define VC_LOG_INFO(fmt, args...) \
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RTE_LOG(INFO, USER1, "[%s] %s() line %u: " fmt "\n", \
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"Vhost-Crypto", __func__, __LINE__, ## args)
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#define VC_LOG_DBG(fmt, args...) \
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RTE_LOG(DEBUG, USER1, "[%s] %s() line %u: " fmt "\n", \
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"Vhost-Crypto", __func__, __LINE__, ## args)
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#else
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#define VC_LOG_ERR(fmt, args...) \
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RTE_LOG(ERR, USER1, "[VHOST-Crypto]: " fmt "\n", ## args)
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#define VC_LOG_INFO(fmt, args...) \
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RTE_LOG(INFO, USER1, "[VHOST-Crypto]: " fmt "\n", ## args)
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#define VC_LOG_DBG(fmt, args...)
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#endif
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#define VIRTIO_CRYPTO_FEATURES ((1 << VIRTIO_F_NOTIFY_ON_EMPTY) | \
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(1 << VIRTIO_RING_F_INDIRECT_DESC) | \
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(1 << VIRTIO_RING_F_EVENT_IDX) | \
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(1 << VIRTIO_CRYPTO_SERVICE_CIPHER) | \
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(1 << VIRTIO_CRYPTO_SERVICE_MAC) | \
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(1 << VIRTIO_NET_F_CTRL_VQ))
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#define GPA_TO_VVA(t, m, a) ((t)(uintptr_t)rte_vhost_gpa_to_vva(m, a))
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static int
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cipher_algo_transform(uint32_t virtio_cipher_algo)
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{
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int ret;
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switch (virtio_cipher_algo) {
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case VIRTIO_CRYPTO_CIPHER_AES_CBC:
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ret = RTE_CRYPTO_CIPHER_AES_CBC;
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break;
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case VIRTIO_CRYPTO_CIPHER_AES_CTR:
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ret = RTE_CRYPTO_CIPHER_AES_CTR;
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break;
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case VIRTIO_CRYPTO_CIPHER_DES_ECB:
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ret = -VIRTIO_CRYPTO_NOTSUPP;
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break;
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case VIRTIO_CRYPTO_CIPHER_DES_CBC:
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ret = RTE_CRYPTO_CIPHER_DES_CBC;
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break;
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case VIRTIO_CRYPTO_CIPHER_3DES_ECB:
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ret = RTE_CRYPTO_CIPHER_3DES_ECB;
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break;
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case VIRTIO_CRYPTO_CIPHER_3DES_CBC:
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ret = RTE_CRYPTO_CIPHER_3DES_CBC;
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break;
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case VIRTIO_CRYPTO_CIPHER_3DES_CTR:
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ret = RTE_CRYPTO_CIPHER_3DES_CTR;
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break;
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case VIRTIO_CRYPTO_CIPHER_KASUMI_F8:
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ret = RTE_CRYPTO_CIPHER_KASUMI_F8;
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break;
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case VIRTIO_CRYPTO_CIPHER_SNOW3G_UEA2:
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ret = RTE_CRYPTO_CIPHER_SNOW3G_UEA2;
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break;
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case VIRTIO_CRYPTO_CIPHER_AES_F8:
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ret = RTE_CRYPTO_CIPHER_AES_F8;
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break;
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case VIRTIO_CRYPTO_CIPHER_AES_XTS:
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ret = RTE_CRYPTO_CIPHER_AES_XTS;
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break;
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case VIRTIO_CRYPTO_CIPHER_ZUC_EEA3:
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ret = RTE_CRYPTO_CIPHER_ZUC_EEA3;
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break;
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default:
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ret = -VIRTIO_CRYPTO_BADMSG;
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break;
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}
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return ret;
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}
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static int
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auth_algo_transform(uint32_t virtio_auth_algo)
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{
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int ret;
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switch (virtio_auth_algo) {
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case VIRTIO_CRYPTO_NO_MAC:
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ret = RTE_CRYPTO_AUTH_NULL;
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break;
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case VIRTIO_CRYPTO_MAC_HMAC_MD5:
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ret = RTE_CRYPTO_AUTH_MD5_HMAC;
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break;
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case VIRTIO_CRYPTO_MAC_HMAC_SHA1:
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ret = RTE_CRYPTO_AUTH_SHA1_HMAC;
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break;
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case VIRTIO_CRYPTO_MAC_HMAC_SHA_224:
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ret = RTE_CRYPTO_AUTH_SHA224_HMAC;
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break;
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case VIRTIO_CRYPTO_MAC_HMAC_SHA_256:
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ret = RTE_CRYPTO_AUTH_SHA256_HMAC;
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break;
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case VIRTIO_CRYPTO_MAC_HMAC_SHA_384:
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ret = RTE_CRYPTO_AUTH_SHA384_HMAC;
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break;
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case VIRTIO_CRYPTO_MAC_HMAC_SHA_512:
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ret = RTE_CRYPTO_AUTH_SHA512_HMAC;
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break;
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case VIRTIO_CRYPTO_MAC_CMAC_3DES:
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ret = -VIRTIO_CRYPTO_NOTSUPP;
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break;
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case VIRTIO_CRYPTO_MAC_CMAC_AES:
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ret = RTE_CRYPTO_AUTH_AES_CMAC;
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break;
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case VIRTIO_CRYPTO_MAC_KASUMI_F9:
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ret = RTE_CRYPTO_AUTH_KASUMI_F9;
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break;
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case VIRTIO_CRYPTO_MAC_SNOW3G_UIA2:
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ret = RTE_CRYPTO_AUTH_SNOW3G_UIA2;
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break;
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case VIRTIO_CRYPTO_MAC_GMAC_AES:
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ret = RTE_CRYPTO_AUTH_AES_GMAC;
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break;
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case VIRTIO_CRYPTO_MAC_GMAC_TWOFISH:
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ret = -VIRTIO_CRYPTO_NOTSUPP;
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break;
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case VIRTIO_CRYPTO_MAC_CBCMAC_AES:
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ret = RTE_CRYPTO_AUTH_AES_CBC_MAC;
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break;
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case VIRTIO_CRYPTO_MAC_CBCMAC_KASUMI_F9:
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ret = -VIRTIO_CRYPTO_NOTSUPP;
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break;
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case VIRTIO_CRYPTO_MAC_XCBC_AES:
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ret = RTE_CRYPTO_AUTH_AES_XCBC_MAC;
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break;
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default:
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ret = -VIRTIO_CRYPTO_BADMSG;
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break;
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}
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return ret;
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}
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static int get_iv_len(enum rte_crypto_cipher_algorithm algo)
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{
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int len;
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switch (algo) {
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case RTE_CRYPTO_CIPHER_3DES_CBC:
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len = 8;
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break;
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case RTE_CRYPTO_CIPHER_3DES_CTR:
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len = 8;
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break;
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case RTE_CRYPTO_CIPHER_3DES_ECB:
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len = 8;
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break;
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case RTE_CRYPTO_CIPHER_AES_CBC:
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len = 16;
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break;
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/* TODO: add common algos */
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default:
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len = -1;
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break;
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}
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return len;
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}
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/**
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* vhost_crypto struct is used to maintain a number of virtio_cryptos and
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* one DPDK crypto device that deals with all crypto workloads. It is declared
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* here and defined in vhost_crypto.c
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*/
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struct vhost_crypto {
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/** Used to lookup DPDK Cryptodev Session based on VIRTIO crypto
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* session ID.
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*/
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struct rte_hash *session_map;
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struct rte_mempool *mbuf_pool;
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struct rte_mempool *sess_pool;
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/** DPDK cryptodev ID */
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uint8_t cid;
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uint16_t nb_qps;
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uint64_t last_session_id;
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uint64_t cache_session_id;
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struct rte_cryptodev_sym_session *cache_session;
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/** socket id for the device */
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int socket_id;
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struct virtio_net *dev;
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uint8_t option;
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} __rte_cache_aligned;
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struct vhost_crypto_data_req {
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struct vring_desc *head;
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struct rte_vhost_memory *mem;
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struct virtio_crypto_inhdr *inhdr;
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struct vhost_virtqueue *vq;
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struct vring_desc *wb_desc;
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uint16_t wb_len;
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uint16_t desc_idx;
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uint16_t len;
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uint16_t zero_copy;
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};
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static int
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transform_cipher_param(struct rte_crypto_sym_xform *xform,
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VhostUserCryptoSessionParam *param)
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{
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int ret;
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ret = cipher_algo_transform(param->cipher_algo);
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if (unlikely(ret < 0))
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return ret;
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xform->type = RTE_CRYPTO_SYM_XFORM_CIPHER;
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xform->cipher.algo = (uint32_t)ret;
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xform->cipher.key.length = param->cipher_key_len;
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if (xform->cipher.key.length > 0)
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xform->cipher.key.data = param->cipher_key_buf;
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if (param->dir == VIRTIO_CRYPTO_OP_ENCRYPT)
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xform->cipher.op = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
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else if (param->dir == VIRTIO_CRYPTO_OP_DECRYPT)
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xform->cipher.op = RTE_CRYPTO_CIPHER_OP_DECRYPT;
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else {
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VC_LOG_DBG("Bad operation type");
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return -VIRTIO_CRYPTO_BADMSG;
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}
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ret = get_iv_len(xform->cipher.algo);
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if (unlikely(ret < 0))
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return ret;
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xform->cipher.iv.length = (uint16_t)ret;
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xform->cipher.iv.offset = IV_OFFSET;
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return 0;
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}
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static int
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transform_chain_param(struct rte_crypto_sym_xform *xforms,
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VhostUserCryptoSessionParam *param)
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{
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struct rte_crypto_sym_xform *xform_cipher, *xform_auth;
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int ret;
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switch (param->chaining_dir) {
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case VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER:
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xform_auth = xforms;
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xform_cipher = xforms->next;
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xform_cipher->cipher.op = RTE_CRYPTO_CIPHER_OP_DECRYPT;
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xform_auth->auth.op = RTE_CRYPTO_AUTH_OP_VERIFY;
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break;
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case VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH:
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xform_cipher = xforms;
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xform_auth = xforms->next;
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xform_cipher->cipher.op = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
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xform_auth->auth.op = RTE_CRYPTO_AUTH_OP_GENERATE;
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break;
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default:
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return -VIRTIO_CRYPTO_BADMSG;
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}
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/* cipher */
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ret = cipher_algo_transform(param->cipher_algo);
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if (unlikely(ret < 0))
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return ret;
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xform_cipher->type = RTE_CRYPTO_SYM_XFORM_CIPHER;
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xform_cipher->cipher.algo = (uint32_t)ret;
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xform_cipher->cipher.key.length = param->cipher_key_len;
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xform_cipher->cipher.key.data = param->cipher_key_buf;
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ret = get_iv_len(xform_cipher->cipher.algo);
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if (unlikely(ret < 0))
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return ret;
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xform_cipher->cipher.iv.length = (uint16_t)ret;
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xform_cipher->cipher.iv.offset = IV_OFFSET;
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/* auth */
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xform_auth->type = RTE_CRYPTO_SYM_XFORM_AUTH;
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ret = auth_algo_transform(param->hash_algo);
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if (unlikely(ret < 0))
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return ret;
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xform_auth->auth.algo = (uint32_t)ret;
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xform_auth->auth.digest_length = param->digest_len;
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xform_auth->auth.key.length = param->auth_key_len;
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xform_auth->auth.key.data = param->auth_key_buf;
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return 0;
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}
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static void
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vhost_crypto_create_sess(struct vhost_crypto *vcrypto,
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VhostUserCryptoSessionParam *sess_param)
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{
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struct rte_crypto_sym_xform xform1 = {0}, xform2 = {0};
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struct rte_cryptodev_sym_session *session;
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int ret;
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switch (sess_param->op_type) {
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case VIRTIO_CRYPTO_SYM_OP_NONE:
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case VIRTIO_CRYPTO_SYM_OP_CIPHER:
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ret = transform_cipher_param(&xform1, sess_param);
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if (unlikely(ret)) {
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VC_LOG_ERR("Error transform session msg (%i)", ret);
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sess_param->session_id = ret;
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return;
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}
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break;
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case VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING:
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if (unlikely(sess_param->hash_mode !=
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VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH)) {
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sess_param->session_id = -VIRTIO_CRYPTO_NOTSUPP;
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VC_LOG_ERR("Error transform session message (%i)",
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-VIRTIO_CRYPTO_NOTSUPP);
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return;
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}
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xform1.next = &xform2;
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ret = transform_chain_param(&xform1, sess_param);
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if (unlikely(ret)) {
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VC_LOG_ERR("Error transform session message (%i)", ret);
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sess_param->session_id = ret;
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return;
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}
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break;
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default:
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VC_LOG_ERR("Algorithm not yet supported");
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sess_param->session_id = -VIRTIO_CRYPTO_NOTSUPP;
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return;
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}
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session = rte_cryptodev_sym_session_create(vcrypto->sess_pool);
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if (!session) {
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VC_LOG_ERR("Failed to create session");
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sess_param->session_id = -VIRTIO_CRYPTO_ERR;
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return;
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}
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if (rte_cryptodev_sym_session_init(vcrypto->cid, session, &xform1,
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vcrypto->sess_pool) < 0) {
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VC_LOG_ERR("Failed to initialize session");
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sess_param->session_id = -VIRTIO_CRYPTO_ERR;
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return;
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}
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/* insert hash to map */
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if (rte_hash_add_key_data(vcrypto->session_map,
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&vcrypto->last_session_id, session) < 0) {
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VC_LOG_ERR("Failed to insert session to hash table");
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if (rte_cryptodev_sym_session_clear(vcrypto->cid, session) < 0)
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VC_LOG_ERR("Failed to clear session");
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else {
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if (rte_cryptodev_sym_session_free(session) < 0)
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VC_LOG_ERR("Failed to free session");
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}
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sess_param->session_id = -VIRTIO_CRYPTO_ERR;
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return;
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}
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VC_LOG_INFO("Session %"PRIu64" created for vdev %i.",
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vcrypto->last_session_id, vcrypto->dev->vid);
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sess_param->session_id = vcrypto->last_session_id;
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vcrypto->last_session_id++;
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}
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static int
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vhost_crypto_close_sess(struct vhost_crypto *vcrypto, uint64_t session_id)
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{
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struct rte_cryptodev_sym_session *session;
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uint64_t sess_id = session_id;
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int ret;
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ret = rte_hash_lookup_data(vcrypto->session_map, &sess_id,
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(void **)&session);
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if (unlikely(ret < 0)) {
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VC_LOG_ERR("Failed to delete session %"PRIu64".", session_id);
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return -VIRTIO_CRYPTO_INVSESS;
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}
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if (rte_cryptodev_sym_session_clear(vcrypto->cid, session) < 0) {
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VC_LOG_DBG("Failed to clear session");
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return -VIRTIO_CRYPTO_ERR;
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}
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if (rte_cryptodev_sym_session_free(session) < 0) {
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VC_LOG_DBG("Failed to free session");
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return -VIRTIO_CRYPTO_ERR;
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}
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if (rte_hash_del_key(vcrypto->session_map, &sess_id) < 0) {
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VC_LOG_DBG("Failed to delete session from hash table.");
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return -VIRTIO_CRYPTO_ERR;
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}
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VC_LOG_INFO("Session %"PRIu64" deleted for vdev %i.", sess_id,
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vcrypto->dev->vid);
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return 0;
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}
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static int
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vhost_crypto_msg_post_handler(int vid, void *msg, uint32_t *require_reply)
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{
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struct virtio_net *dev = get_device(vid);
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struct vhost_crypto *vcrypto;
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VhostUserMsg *vmsg = msg;
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int ret = 0;
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if (dev == NULL || require_reply == NULL) {
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VC_LOG_ERR("Invalid vid %i", vid);
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return -EINVAL;
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}
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vcrypto = dev->extern_data;
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if (vcrypto == NULL) {
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VC_LOG_ERR("Cannot find required data, is it initialized?");
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return -ENOENT;
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}
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*require_reply = 0;
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if (vmsg->request.master == VHOST_USER_CRYPTO_CREATE_SESS) {
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vhost_crypto_create_sess(vcrypto,
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&vmsg->payload.crypto_session);
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*require_reply = 1;
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} else if (vmsg->request.master == VHOST_USER_CRYPTO_CLOSE_SESS)
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ret = vhost_crypto_close_sess(vcrypto, vmsg->payload.u64);
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else
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ret = -EINVAL;
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return ret;
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}
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static __rte_always_inline struct vring_desc *
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find_write_desc(struct vring_desc *head, struct vring_desc *desc)
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{
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if (desc->flags & VRING_DESC_F_WRITE)
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return desc;
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while (desc->flags & VRING_DESC_F_NEXT) {
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desc = &head[desc->next];
|
|
if (desc->flags & VRING_DESC_F_WRITE)
|
|
return desc;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct virtio_crypto_inhdr *
|
|
reach_inhdr(struct vring_desc *head, struct rte_vhost_memory *mem,
|
|
struct vring_desc *desc)
|
|
{
|
|
while (desc->flags & VRING_DESC_F_NEXT)
|
|
desc = &head[desc->next];
|
|
|
|
return GPA_TO_VVA(struct virtio_crypto_inhdr *, mem, desc->addr);
|
|
}
|
|
|
|
static __rte_always_inline int
|
|
move_desc(struct vring_desc *head, struct vring_desc **cur_desc,
|
|
uint32_t size)
|
|
{
|
|
struct vring_desc *desc = *cur_desc;
|
|
int left = size;
|
|
|
|
rte_prefetch0(&head[desc->next]);
|
|
left -= desc->len;
|
|
|
|
while ((desc->flags & VRING_DESC_F_NEXT) && left > 0) {
|
|
desc = &head[desc->next];
|
|
rte_prefetch0(&head[desc->next]);
|
|
left -= desc->len;
|
|
}
|
|
|
|
if (unlikely(left < 0)) {
|
|
VC_LOG_ERR("Incorrect virtio descriptor");
|
|
return -1;
|
|
}
|
|
|
|
*cur_desc = &head[desc->next];
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
copy_data(void *dst_data, struct vring_desc *head, struct rte_vhost_memory *mem,
|
|
struct vring_desc **cur_desc, uint32_t size)
|
|
{
|
|
struct vring_desc *desc = *cur_desc;
|
|
uint32_t to_copy;
|
|
uint8_t *data = dst_data;
|
|
uint8_t *src;
|
|
int left = size;
|
|
|
|
rte_prefetch0(&head[desc->next]);
|
|
to_copy = RTE_MIN(desc->len, (uint32_t)left);
|
|
src = GPA_TO_VVA(uint8_t *, mem, desc->addr);
|
|
rte_memcpy((uint8_t *)data, src, to_copy);
|
|
left -= to_copy;
|
|
|
|
while ((desc->flags & VRING_DESC_F_NEXT) && left > 0) {
|
|
desc = &head[desc->next];
|
|
rte_prefetch0(&head[desc->next]);
|
|
to_copy = RTE_MIN(desc->len, (uint32_t)left);
|
|
src = GPA_TO_VVA(uint8_t *, mem, desc->addr);
|
|
rte_memcpy(data + size - left, src, to_copy);
|
|
left -= to_copy;
|
|
}
|
|
|
|
if (unlikely(left < 0)) {
|
|
VC_LOG_ERR("Incorrect virtio descriptor");
|
|
return -1;
|
|
}
|
|
|
|
*cur_desc = &head[desc->next];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static __rte_always_inline void *
|
|
get_data_ptr(struct vring_desc *head, struct rte_vhost_memory *mem,
|
|
struct vring_desc **cur_desc, uint32_t size)
|
|
{
|
|
void *data;
|
|
|
|
data = GPA_TO_VVA(void *, mem, (*cur_desc)->addr);
|
|
if (unlikely(!data)) {
|
|
VC_LOG_ERR("Failed to get object");
|
|
return NULL;
|
|
}
|
|
|
|
if (unlikely(move_desc(head, cur_desc, size) < 0))
|
|
return NULL;
|
|
|
|
return data;
|
|
}
|
|
|
|
static int
|
|
write_back_data(struct rte_crypto_op *op, struct vhost_crypto_data_req *vc_req)
|
|
{
|
|
struct rte_mbuf *mbuf = op->sym->m_dst;
|
|
struct vring_desc *head = vc_req->head;
|
|
struct rte_vhost_memory *mem = vc_req->mem;
|
|
struct vring_desc *desc = vc_req->wb_desc;
|
|
int left = vc_req->wb_len;
|
|
uint32_t to_write;
|
|
uint8_t *src_data = mbuf->buf_addr, *dst;
|
|
|
|
rte_prefetch0(&head[desc->next]);
|
|
to_write = RTE_MIN(desc->len, (uint32_t)left);
|
|
dst = GPA_TO_VVA(uint8_t *, mem, desc->addr);
|
|
rte_memcpy(dst, src_data, to_write);
|
|
left -= to_write;
|
|
src_data += to_write;
|
|
|
|
while ((desc->flags & VRING_DESC_F_NEXT) && left > 0) {
|
|
desc = &head[desc->next];
|
|
rte_prefetch0(&head[desc->next]);
|
|
to_write = RTE_MIN(desc->len, (uint32_t)left);
|
|
dst = GPA_TO_VVA(uint8_t *, mem, desc->addr);
|
|
rte_memcpy(dst, src_data, to_write);
|
|
left -= to_write;
|
|
src_data += to_write;
|
|
}
|
|
|
|
if (unlikely(left < 0)) {
|
|
VC_LOG_ERR("Incorrect virtio descriptor");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static uint8_t
|
|
prepare_sym_cipher_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op,
|
|
struct vhost_crypto_data_req *vc_req,
|
|
struct virtio_crypto_cipher_data_req *cipher,
|
|
struct vring_desc *cur_desc)
|
|
{
|
|
struct vring_desc *head = vc_req->head;
|
|
struct vring_desc *desc = cur_desc;
|
|
struct rte_vhost_memory *mem = vc_req->mem;
|
|
struct rte_mbuf *m_src = op->sym->m_src, *m_dst = op->sym->m_dst;
|
|
uint8_t *iv_data = rte_crypto_op_ctod_offset(op, uint8_t *, IV_OFFSET);
|
|
uint8_t ret = 0;
|
|
|
|
/* prepare */
|
|
/* iv */
|
|
if (unlikely(copy_data(iv_data, head, mem, &desc,
|
|
cipher->para.iv_len) < 0)) {
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
m_src->data_len = cipher->para.src_data_len;
|
|
|
|
switch (vcrypto->option) {
|
|
case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE:
|
|
m_src->buf_iova = gpa_to_hpa(vcrypto->dev, desc->addr,
|
|
cipher->para.src_data_len);
|
|
m_src->buf_addr = get_data_ptr(head, mem, &desc,
|
|
cipher->para.src_data_len);
|
|
if (unlikely(m_src->buf_iova == 0 ||
|
|
m_src->buf_addr == NULL)) {
|
|
VC_LOG_ERR("zero_copy may fail due to cross page data");
|
|
ret = VIRTIO_CRYPTO_ERR;
|
|
goto error_exit;
|
|
}
|
|
break;
|
|
case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE:
|
|
if (unlikely(cipher->para.src_data_len >
|
|
RTE_MBUF_DEFAULT_BUF_SIZE)) {
|
|
VC_LOG_ERR("Not enough space to do data copy");
|
|
ret = VIRTIO_CRYPTO_ERR;
|
|
goto error_exit;
|
|
}
|
|
if (unlikely(copy_data(rte_pktmbuf_mtod(m_src, uint8_t *), head,
|
|
mem, &desc, cipher->para.src_data_len))
|
|
< 0) {
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
break;
|
|
default:
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
/* dst */
|
|
desc = find_write_desc(head, desc);
|
|
if (unlikely(!desc)) {
|
|
VC_LOG_ERR("Cannot find write location");
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
switch (vcrypto->option) {
|
|
case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE:
|
|
m_dst->buf_iova = gpa_to_hpa(vcrypto->dev,
|
|
desc->addr, cipher->para.dst_data_len);
|
|
m_dst->buf_addr = get_data_ptr(head, mem, &desc,
|
|
cipher->para.dst_data_len);
|
|
if (unlikely(m_dst->buf_iova == 0 || m_dst->buf_addr == NULL)) {
|
|
VC_LOG_ERR("zero_copy may fail due to cross page data");
|
|
ret = VIRTIO_CRYPTO_ERR;
|
|
goto error_exit;
|
|
}
|
|
|
|
m_dst->data_len = cipher->para.dst_data_len;
|
|
break;
|
|
case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE:
|
|
vc_req->wb_desc = desc;
|
|
vc_req->wb_len = cipher->para.dst_data_len;
|
|
if (unlikely(move_desc(head, &desc, vc_req->wb_len) < 0)) {
|
|
ret = VIRTIO_CRYPTO_ERR;
|
|
goto error_exit;
|
|
}
|
|
break;
|
|
default:
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
/* src data */
|
|
op->type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
|
|
op->sess_type = RTE_CRYPTO_OP_WITH_SESSION;
|
|
|
|
op->sym->cipher.data.offset = 0;
|
|
op->sym->cipher.data.length = cipher->para.src_data_len;
|
|
|
|
vc_req->inhdr = get_data_ptr(head, mem, &desc, INHDR_LEN);
|
|
if (unlikely(vc_req->inhdr == NULL)) {
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
vc_req->inhdr->status = VIRTIO_CRYPTO_OK;
|
|
vc_req->len = cipher->para.dst_data_len + INHDR_LEN;
|
|
|
|
return 0;
|
|
|
|
error_exit:
|
|
vc_req->len = INHDR_LEN;
|
|
return ret;
|
|
}
|
|
|
|
static uint8_t
|
|
prepare_sym_chain_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op,
|
|
struct vhost_crypto_data_req *vc_req,
|
|
struct virtio_crypto_alg_chain_data_req *chain,
|
|
struct vring_desc *cur_desc)
|
|
{
|
|
struct vring_desc *head = vc_req->head;
|
|
struct vring_desc *desc = cur_desc;
|
|
struct rte_vhost_memory *mem = vc_req->mem;
|
|
struct rte_mbuf *m_src = op->sym->m_src, *m_dst = op->sym->m_dst;
|
|
uint8_t *iv_data = rte_crypto_op_ctod_offset(op, uint8_t *, IV_OFFSET);
|
|
uint32_t digest_offset;
|
|
void *digest_addr;
|
|
uint8_t ret = 0;
|
|
|
|
/* prepare */
|
|
/* iv */
|
|
if (unlikely(copy_data(iv_data, head, mem, &desc,
|
|
chain->para.iv_len) < 0)) {
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
m_src->data_len = chain->para.src_data_len;
|
|
m_dst->data_len = chain->para.dst_data_len;
|
|
|
|
switch (vcrypto->option) {
|
|
case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE:
|
|
m_src->buf_iova = gpa_to_hpa(vcrypto->dev, desc->addr,
|
|
chain->para.src_data_len);
|
|
m_src->buf_addr = get_data_ptr(head, mem, &desc,
|
|
chain->para.src_data_len);
|
|
if (unlikely(m_src->buf_iova == 0 || m_src->buf_addr == NULL)) {
|
|
VC_LOG_ERR("zero_copy may fail due to cross page data");
|
|
ret = VIRTIO_CRYPTO_ERR;
|
|
goto error_exit;
|
|
}
|
|
break;
|
|
case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE:
|
|
if (unlikely(chain->para.src_data_len >
|
|
RTE_MBUF_DEFAULT_BUF_SIZE)) {
|
|
VC_LOG_ERR("Not enough space to do data copy");
|
|
ret = VIRTIO_CRYPTO_ERR;
|
|
goto error_exit;
|
|
}
|
|
if (unlikely(copy_data(rte_pktmbuf_mtod(m_src, uint8_t *), head,
|
|
mem, &desc, chain->para.src_data_len)) < 0) {
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
break;
|
|
default:
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
/* dst */
|
|
desc = find_write_desc(head, desc);
|
|
if (unlikely(!desc)) {
|
|
VC_LOG_ERR("Cannot find write location");
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
switch (vcrypto->option) {
|
|
case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE:
|
|
m_dst->buf_iova = gpa_to_hpa(vcrypto->dev,
|
|
desc->addr, chain->para.dst_data_len);
|
|
m_dst->buf_addr = get_data_ptr(head, mem, &desc,
|
|
chain->para.dst_data_len);
|
|
if (unlikely(m_dst->buf_iova == 0 || m_dst->buf_addr == NULL)) {
|
|
VC_LOG_ERR("zero_copy may fail due to cross page data");
|
|
ret = VIRTIO_CRYPTO_ERR;
|
|
goto error_exit;
|
|
}
|
|
|
|
op->sym->auth.digest.phys_addr = gpa_to_hpa(vcrypto->dev,
|
|
desc->addr, chain->para.hash_result_len);
|
|
op->sym->auth.digest.data = get_data_ptr(head, mem, &desc,
|
|
chain->para.hash_result_len);
|
|
if (unlikely(op->sym->auth.digest.phys_addr == 0)) {
|
|
VC_LOG_ERR("zero_copy may fail due to cross page data");
|
|
ret = VIRTIO_CRYPTO_ERR;
|
|
goto error_exit;
|
|
}
|
|
break;
|
|
case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE:
|
|
digest_offset = m_dst->data_len;
|
|
digest_addr = rte_pktmbuf_mtod_offset(m_dst, void *,
|
|
digest_offset);
|
|
|
|
vc_req->wb_desc = desc;
|
|
vc_req->wb_len = m_dst->data_len + chain->para.hash_result_len;
|
|
|
|
if (unlikely(move_desc(head, &desc,
|
|
chain->para.dst_data_len) < 0)) {
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
if (unlikely(copy_data(digest_addr, head, mem, &desc,
|
|
chain->para.hash_result_len)) < 0) {
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
op->sym->auth.digest.data = digest_addr;
|
|
op->sym->auth.digest.phys_addr = rte_pktmbuf_iova_offset(m_dst,
|
|
digest_offset);
|
|
if (unlikely(move_desc(head, &desc,
|
|
chain->para.hash_result_len) < 0)) {
|
|
ret = VIRTIO_CRYPTO_ERR;
|
|
goto error_exit;
|
|
}
|
|
break;
|
|
default:
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
/* record inhdr */
|
|
vc_req->inhdr = get_data_ptr(head, mem, &desc, INHDR_LEN);
|
|
if (unlikely(vc_req->inhdr == NULL)) {
|
|
ret = VIRTIO_CRYPTO_BADMSG;
|
|
goto error_exit;
|
|
}
|
|
|
|
vc_req->inhdr->status = VIRTIO_CRYPTO_OK;
|
|
|
|
op->type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
|
|
op->sess_type = RTE_CRYPTO_OP_WITH_SESSION;
|
|
|
|
op->sym->cipher.data.offset = chain->para.cipher_start_src_offset;
|
|
op->sym->cipher.data.length = chain->para.src_data_len -
|
|
chain->para.cipher_start_src_offset;
|
|
|
|
op->sym->auth.data.offset = chain->para.hash_start_src_offset;
|
|
op->sym->auth.data.length = chain->para.len_to_hash;
|
|
|
|
vc_req->len = chain->para.dst_data_len + chain->para.hash_result_len +
|
|
INHDR_LEN;
|
|
return 0;
|
|
|
|
error_exit:
|
|
vc_req->len = INHDR_LEN;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Process on descriptor
|
|
*/
|
|
static __rte_always_inline int
|
|
vhost_crypto_process_one_req(struct vhost_crypto *vcrypto,
|
|
struct vhost_virtqueue *vq, struct rte_crypto_op *op,
|
|
struct vring_desc *head, uint16_t desc_idx,
|
|
struct rte_vhost_memory *mem)
|
|
{
|
|
struct vhost_crypto_data_req *vc_req = RTE_PTR_ADD(op->sym->m_src,
|
|
sizeof(struct rte_mbuf));
|
|
struct rte_cryptodev_sym_session *session;
|
|
struct virtio_crypto_op_data_req *req;
|
|
struct virtio_crypto_inhdr *inhdr;
|
|
struct vring_desc *desc = NULL;
|
|
uint64_t session_id;
|
|
int err = 0;
|
|
|
|
vc_req->desc_idx = desc_idx;
|
|
|
|
if (likely(head->flags & VRING_DESC_F_INDIRECT)) {
|
|
head = GPA_TO_VVA(struct vring_desc *, mem, head->addr);
|
|
if (unlikely(!head))
|
|
return 0;
|
|
desc_idx = 0;
|
|
}
|
|
|
|
desc = head;
|
|
|
|
vc_req->mem = mem;
|
|
vc_req->head = head;
|
|
vc_req->vq = vq;
|
|
|
|
vc_req->zero_copy = vcrypto->option;
|
|
|
|
req = get_data_ptr(head, mem, &desc, sizeof(*req));
|
|
if (unlikely(req == NULL)) {
|
|
err = VIRTIO_CRYPTO_ERR;
|
|
VC_LOG_ERR("Invalid descriptor");
|
|
goto error_exit;
|
|
}
|
|
|
|
switch (req->header.opcode) {
|
|
case VIRTIO_CRYPTO_CIPHER_ENCRYPT:
|
|
case VIRTIO_CRYPTO_CIPHER_DECRYPT:
|
|
session_id = req->header.session_id;
|
|
|
|
/* one branch to avoid unnecessary table lookup */
|
|
if (vcrypto->cache_session_id != session_id) {
|
|
err = rte_hash_lookup_data(vcrypto->session_map,
|
|
&session_id, (void **)&session);
|
|
if (unlikely(err < 0)) {
|
|
err = VIRTIO_CRYPTO_ERR;
|
|
VC_LOG_ERR("Failed to find session %"PRIu64,
|
|
session_id);
|
|
goto error_exit;
|
|
}
|
|
|
|
vcrypto->cache_session = session;
|
|
vcrypto->cache_session_id = session_id;
|
|
}
|
|
|
|
session = vcrypto->cache_session;
|
|
|
|
err = rte_crypto_op_attach_sym_session(op, session);
|
|
if (unlikely(err < 0)) {
|
|
err = VIRTIO_CRYPTO_ERR;
|
|
VC_LOG_ERR("Failed to attach session to op");
|
|
goto error_exit;
|
|
}
|
|
|
|
switch (req->u.sym_req.op_type) {
|
|
case VIRTIO_CRYPTO_SYM_OP_NONE:
|
|
err = VIRTIO_CRYPTO_NOTSUPP;
|
|
break;
|
|
case VIRTIO_CRYPTO_SYM_OP_CIPHER:
|
|
err = prepare_sym_cipher_op(vcrypto, op, vc_req,
|
|
&req->u.sym_req.u.cipher, desc);
|
|
break;
|
|
case VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING:
|
|
err = prepare_sym_chain_op(vcrypto, op, vc_req,
|
|
&req->u.sym_req.u.chain, desc);
|
|
break;
|
|
}
|
|
if (unlikely(err != 0)) {
|
|
VC_LOG_ERR("Failed to process sym request");
|
|
goto error_exit;
|
|
}
|
|
break;
|
|
default:
|
|
VC_LOG_ERR("Unsupported symmetric crypto request type %u",
|
|
req->header.opcode);
|
|
goto error_exit;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error_exit:
|
|
|
|
inhdr = reach_inhdr(head, mem, desc);
|
|
if (likely(inhdr != NULL))
|
|
inhdr->status = (uint8_t)err;
|
|
|
|
return -1;
|
|
}
|
|
|
|
static __rte_always_inline struct vhost_virtqueue *
|
|
vhost_crypto_finalize_one_request(struct rte_crypto_op *op,
|
|
struct vhost_virtqueue *old_vq)
|
|
{
|
|
struct rte_mbuf *m_src = op->sym->m_src;
|
|
struct rte_mbuf *m_dst = op->sym->m_dst;
|
|
struct vhost_crypto_data_req *vc_req = RTE_PTR_ADD(m_src,
|
|
sizeof(struct rte_mbuf));
|
|
uint16_t desc_idx;
|
|
int ret = 0;
|
|
|
|
if (unlikely(!vc_req)) {
|
|
VC_LOG_ERR("Failed to retrieve vc_req");
|
|
return NULL;
|
|
}
|
|
|
|
if (old_vq && (vc_req->vq != old_vq))
|
|
return vc_req->vq;
|
|
|
|
desc_idx = vc_req->desc_idx;
|
|
|
|
if (unlikely(op->status != RTE_CRYPTO_OP_STATUS_SUCCESS))
|
|
vc_req->inhdr->status = VIRTIO_CRYPTO_ERR;
|
|
else {
|
|
if (vc_req->zero_copy == 0) {
|
|
ret = write_back_data(op, vc_req);
|
|
if (unlikely(ret != 0))
|
|
vc_req->inhdr->status = VIRTIO_CRYPTO_ERR;
|
|
}
|
|
}
|
|
|
|
vc_req->vq->used->ring[desc_idx].id = desc_idx;
|
|
vc_req->vq->used->ring[desc_idx].len = vc_req->len;
|
|
|
|
rte_mempool_put(m_dst->pool, (void *)m_dst);
|
|
rte_mempool_put(m_src->pool, (void *)m_src);
|
|
|
|
return vc_req->vq;
|
|
}
|
|
|
|
static __rte_always_inline uint16_t
|
|
vhost_crypto_complete_one_vm_requests(struct rte_crypto_op **ops,
|
|
uint16_t nb_ops, int *callfd)
|
|
{
|
|
uint16_t processed = 1;
|
|
struct vhost_virtqueue *vq, *tmp_vq;
|
|
|
|
if (unlikely(nb_ops == 0))
|
|
return 0;
|
|
|
|
vq = vhost_crypto_finalize_one_request(ops[0], NULL);
|
|
if (unlikely(vq == NULL))
|
|
return 0;
|
|
tmp_vq = vq;
|
|
|
|
while ((processed < nb_ops)) {
|
|
tmp_vq = vhost_crypto_finalize_one_request(ops[processed],
|
|
tmp_vq);
|
|
|
|
if (unlikely(vq != tmp_vq))
|
|
break;
|
|
|
|
processed++;
|
|
}
|
|
|
|
*callfd = vq->callfd;
|
|
|
|
*(volatile uint16_t *)&vq->used->idx += processed;
|
|
|
|
return processed;
|
|
}
|
|
|
|
int __rte_experimental
|
|
rte_vhost_crypto_create(int vid, uint8_t cryptodev_id,
|
|
struct rte_mempool *sess_pool, int socket_id)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
struct rte_hash_parameters params = {0};
|
|
struct vhost_crypto *vcrypto;
|
|
char name[128];
|
|
int ret;
|
|
|
|
if (!dev) {
|
|
VC_LOG_ERR("Invalid vid %i", vid);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = rte_vhost_driver_set_features(dev->ifname,
|
|
VIRTIO_CRYPTO_FEATURES);
|
|
if (ret < 0) {
|
|
VC_LOG_ERR("Error setting features");
|
|
return -1;
|
|
}
|
|
|
|
vcrypto = rte_zmalloc_socket(NULL, sizeof(*vcrypto),
|
|
RTE_CACHE_LINE_SIZE, socket_id);
|
|
if (!vcrypto) {
|
|
VC_LOG_ERR("Insufficient memory");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
vcrypto->sess_pool = sess_pool;
|
|
vcrypto->cid = cryptodev_id;
|
|
vcrypto->cache_session_id = UINT64_MAX;
|
|
vcrypto->last_session_id = 1;
|
|
vcrypto->dev = dev;
|
|
vcrypto->option = RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE;
|
|
|
|
snprintf(name, 127, "HASH_VHOST_CRYPT_%u", (uint32_t)vid);
|
|
params.name = name;
|
|
params.entries = VHOST_CRYPTO_SESSION_MAP_ENTRIES;
|
|
params.hash_func = rte_jhash;
|
|
params.key_len = sizeof(uint64_t);
|
|
params.socket_id = socket_id;
|
|
vcrypto->session_map = rte_hash_create(¶ms);
|
|
if (!vcrypto->session_map) {
|
|
VC_LOG_ERR("Failed to creath session map");
|
|
ret = -ENOMEM;
|
|
goto error_exit;
|
|
}
|
|
|
|
snprintf(name, 127, "MBUF_POOL_VM_%u", (uint32_t)vid);
|
|
vcrypto->mbuf_pool = rte_pktmbuf_pool_create(name,
|
|
VHOST_CRYPTO_MBUF_POOL_SIZE, 512,
|
|
sizeof(struct vhost_crypto_data_req),
|
|
RTE_MBUF_DEFAULT_DATAROOM * 2 + RTE_PKTMBUF_HEADROOM,
|
|
rte_socket_id());
|
|
if (!vcrypto->mbuf_pool) {
|
|
VC_LOG_ERR("Failed to creath mbuf pool");
|
|
ret = -ENOMEM;
|
|
goto error_exit;
|
|
}
|
|
|
|
dev->extern_data = vcrypto;
|
|
dev->extern_ops.pre_msg_handle = NULL;
|
|
dev->extern_ops.post_msg_handle = vhost_crypto_msg_post_handler;
|
|
|
|
return 0;
|
|
|
|
error_exit:
|
|
if (vcrypto->session_map)
|
|
rte_hash_free(vcrypto->session_map);
|
|
if (vcrypto->mbuf_pool)
|
|
rte_mempool_free(vcrypto->mbuf_pool);
|
|
|
|
rte_free(vcrypto);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int __rte_experimental
|
|
rte_vhost_crypto_free(int vid)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
struct vhost_crypto *vcrypto;
|
|
|
|
if (unlikely(dev == NULL)) {
|
|
VC_LOG_ERR("Invalid vid %i", vid);
|
|
return -EINVAL;
|
|
}
|
|
|
|
vcrypto = dev->extern_data;
|
|
if (unlikely(vcrypto == NULL)) {
|
|
VC_LOG_ERR("Cannot find required data, is it initialized?");
|
|
return -ENOENT;
|
|
}
|
|
|
|
rte_hash_free(vcrypto->session_map);
|
|
rte_mempool_free(vcrypto->mbuf_pool);
|
|
rte_free(vcrypto);
|
|
|
|
dev->extern_data = NULL;
|
|
dev->extern_ops.pre_msg_handle = NULL;
|
|
dev->extern_ops.post_msg_handle = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int __rte_experimental
|
|
rte_vhost_crypto_set_zero_copy(int vid, enum rte_vhost_crypto_zero_copy option)
|
|
{
|
|
struct virtio_net *dev = get_device(vid);
|
|
struct vhost_crypto *vcrypto;
|
|
|
|
if (unlikely(dev == NULL)) {
|
|
VC_LOG_ERR("Invalid vid %i", vid);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (unlikely(option < 0 || option >=
|
|
RTE_VHOST_CRYPTO_MAX_ZERO_COPY_OPTIONS)) {
|
|
VC_LOG_ERR("Invalid option %i", option);
|
|
return -EINVAL;
|
|
}
|
|
|
|
vcrypto = (struct vhost_crypto *)dev->extern_data;
|
|
if (unlikely(vcrypto == NULL)) {
|
|
VC_LOG_ERR("Cannot find required data, is it initialized?");
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (vcrypto->option == (uint8_t)option)
|
|
return 0;
|
|
|
|
if (!(rte_mempool_full(vcrypto->mbuf_pool))) {
|
|
VC_LOG_ERR("Cannot update zero copy as mempool is not full");
|
|
return -EINVAL;
|
|
}
|
|
|
|
vcrypto->option = (uint8_t)option;
|
|
|
|
return 0;
|
|
}
|
|
|
|
uint16_t __rte_experimental
|
|
rte_vhost_crypto_fetch_requests(int vid, uint32_t qid,
|
|
struct rte_crypto_op **ops, uint16_t nb_ops)
|
|
{
|
|
struct rte_mbuf *mbufs[VHOST_CRYPTO_MAX_BURST_SIZE * 2];
|
|
struct virtio_net *dev = get_device(vid);
|
|
struct rte_vhost_memory *mem;
|
|
struct vhost_crypto *vcrypto;
|
|
struct vhost_virtqueue *vq;
|
|
uint16_t avail_idx;
|
|
uint16_t start_idx;
|
|
uint16_t required;
|
|
uint16_t count;
|
|
uint16_t i;
|
|
|
|
if (unlikely(dev == NULL)) {
|
|
VC_LOG_ERR("Invalid vid %i", vid);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (unlikely(qid >= VHOST_MAX_QUEUE_PAIRS)) {
|
|
VC_LOG_ERR("Invalid qid %u", qid);
|
|
return -EINVAL;
|
|
}
|
|
|
|
vcrypto = (struct vhost_crypto *)dev->extern_data;
|
|
if (unlikely(vcrypto == NULL)) {
|
|
VC_LOG_ERR("Cannot find required data, is it initialized?");
|
|
return -ENOENT;
|
|
}
|
|
|
|
vq = dev->virtqueue[qid];
|
|
mem = dev->mem;
|
|
|
|
avail_idx = *((volatile uint16_t *)&vq->avail->idx);
|
|
start_idx = vq->last_used_idx;
|
|
count = avail_idx - start_idx;
|
|
count = RTE_MIN(count, VHOST_CRYPTO_MAX_BURST_SIZE);
|
|
count = RTE_MIN(count, nb_ops);
|
|
|
|
if (unlikely(count == 0))
|
|
return 0;
|
|
|
|
/* for zero copy, we need 2 empty mbufs for src and dst, otherwise
|
|
* we need only 1 mbuf as src and dst
|
|
*/
|
|
required = count * 2;
|
|
if (unlikely(rte_mempool_get_bulk(vcrypto->mbuf_pool, (void **)mbufs,
|
|
required) < 0)) {
|
|
VC_LOG_ERR("Insufficient memory");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
for (i = 0; i < count; i++) {
|
|
uint16_t used_idx = (start_idx + i) & (vq->size - 1);
|
|
uint16_t desc_idx = vq->avail->ring[used_idx];
|
|
struct vring_desc *head = &vq->desc[desc_idx];
|
|
struct rte_crypto_op *op = ops[i];
|
|
|
|
op->sym->m_src = mbufs[i * 2];
|
|
op->sym->m_dst = mbufs[i * 2 + 1];
|
|
op->sym->m_src->data_off = 0;
|
|
op->sym->m_dst->data_off = 0;
|
|
|
|
if (unlikely(vhost_crypto_process_one_req(vcrypto, vq, op, head,
|
|
desc_idx, mem)) < 0)
|
|
break;
|
|
}
|
|
|
|
vq->last_used_idx += i;
|
|
|
|
return i;
|
|
}
|
|
|
|
uint16_t __rte_experimental
|
|
rte_vhost_crypto_finalize_requests(struct rte_crypto_op **ops,
|
|
uint16_t nb_ops, int *callfds, uint16_t *nb_callfds)
|
|
{
|
|
struct rte_crypto_op **tmp_ops = ops;
|
|
uint16_t count = 0, left = nb_ops;
|
|
int callfd;
|
|
uint16_t idx = 0;
|
|
|
|
while (left) {
|
|
count = vhost_crypto_complete_one_vm_requests(tmp_ops, left,
|
|
&callfd);
|
|
if (unlikely(count == 0))
|
|
break;
|
|
|
|
tmp_ops = &tmp_ops[count];
|
|
left -= count;
|
|
|
|
callfds[idx++] = callfd;
|
|
|
|
if (unlikely(idx >= VIRTIO_CRYPTO_MAX_NUM_BURST_VQS)) {
|
|
VC_LOG_ERR("Too many vqs");
|
|
break;
|
|
}
|
|
}
|
|
|
|
*nb_callfds = idx;
|
|
|
|
return nb_ops - left;
|
|
}
|