[dpdk-dev] [PATCH v3 03/10] lib/librte_vhost: add session message handler
Fan Zhang
roy.fan.zhang at intel.com
Mon Mar 26 11:51:07 CEST 2018
This patch adds session message handler to vhost crypto.
Signed-off-by: Fan Zhang <roy.fan.zhang at intel.com>
---
lib/librte_vhost/vhost_crypto.c | 428 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 428 insertions(+)
create mode 100644 lib/librte_vhost/vhost_crypto.c
diff --git a/lib/librte_vhost/vhost_crypto.c b/lib/librte_vhost/vhost_crypto.c
new file mode 100644
index 0000000..c639b20
--- /dev/null
+++ b/lib/librte_vhost/vhost_crypto.c
@@ -0,0 +1,428 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017-2018 Intel Corporation
+ */
+
+#include <stdbool.h>
+
+#include <rte_malloc.h>
+#include <rte_jhash.h>
+#include <rte_mbuf.h>
+#ifdef RTE_LIBRTE_VHOST_DEBUG
+#include <rte_hexdump.h>
+#endif
+#include "vhost.h"
+#include "vhost_user.h"
+#include "rte_vhost_crypto.h"
+
+#define NB_MEMPOOL_OBJS (1024)
+#define NB_CRYPTO_DESCRIPTORS (1024)
+#define NB_CACHE_OBJS (128)
+
+#define SESSION_MAP_ENTRIES (1024) /**< Max nb sessions per vdev */
+#define MAX_KEY_SIZE (32)
+#define VHOST_CRYPTO_MAX_IV_LEN (16)
+#define MAX_COUNT_DOWN_TIMES (100)
+
+#define INHDR_LEN (sizeof(struct virtio_crypto_inhdr))
+#define IV_OFFSET (sizeof(struct rte_crypto_op) + \
+ sizeof(struct rte_crypto_sym_op))
+
+#ifdef RTE_LIBRTE_VHOST_DEBUG
+#define VC_LOG_ERR(fmt, args...) \
+ RTE_LOG(ERR, USER1, "[%s] %s() line %u: " fmt "\n", \
+ "Vhost-Crypto", __func__, __LINE__, ## args)
+#define VC_LOG_INFO(fmt, args...) \
+ RTE_LOG(INFO, USER1, "[%s] %s() line %u: " fmt "\n", \
+ "Vhost-Crypto", __func__, __LINE__, ## args)
+
+#define VC_LOG_DBG(fmt, args...) \
+ RTE_LOG(DEBUG, USER1, "[%s] %s() line %u: " fmt "\n", \
+ "Vhost-Crypto", __func__, __LINE__, ## args)
+#else
+#define VC_LOG_ERR(fmt, args...) \
+ RTE_LOG(ERR, USER1, "[VHOST-Crypto]: " fmt "\n", ## args)
+#define VC_LOG_INFO(fmt, args...) \
+ RTE_LOG(INFO, USER1, "[VHOST-Crypto]: " fmt "\n", ## args)
+#define VC_LOG_DBG(fmt, args...)
+#endif
+
+#define VIRTIO_CRYPTO_FEATURES ((1 << VIRTIO_F_NOTIFY_ON_EMPTY) | \
+ (1 << VIRTIO_RING_F_INDIRECT_DESC) | \
+ (1 << VIRTIO_RING_F_EVENT_IDX) | \
+ (1 << VIRTIO_CRYPTO_SERVICE_CIPHER) | \
+ (1 << VIRTIO_CRYPTO_SERVICE_HASH) | \
+ (1 << VIRTIO_CRYPTO_SERVICE_MAC) | \
+ (1 << VIRTIO_CRYPTO_SERVICE_AEAD) | \
+ (1 << VIRTIO_NET_F_CTRL_VQ))
+
+
+#define GPA_TO_VVA(t, m, a) ((t)(uintptr_t)rte_vhost_gpa_to_vva(m, a))
+
+/* Macro to get the buffer at the end of rte_crypto_op */
+#define REQ_OP_OFFSET (IV_OFFSET + VHOST_CRYPTO_MAX_IV_LEN)
+
+/**
+ * 1-to-1 mapping between RTE_CRYPTO_*ALGO* and VIRTIO_CRYPTO_*ALGO*, for
+ * algorithms not supported by RTE_CRYPTODEV, the -VIRTIO_CRYPTO_NOTSUPP is
+ * returned.
+ */
+static int cipher_algo_transform[] = {
+ RTE_CRYPTO_CIPHER_NULL,
+ RTE_CRYPTO_CIPHER_ARC4,
+ RTE_CRYPTO_CIPHER_AES_ECB,
+ RTE_CRYPTO_CIPHER_AES_CBC,
+ RTE_CRYPTO_CIPHER_AES_CTR,
+ -VIRTIO_CRYPTO_NOTSUPP, /* VIRTIO_CRYPTO_CIPHER_DES_ECB */
+ RTE_CRYPTO_CIPHER_DES_CBC,
+ RTE_CRYPTO_CIPHER_3DES_ECB,
+ RTE_CRYPTO_CIPHER_3DES_CBC,
+ RTE_CRYPTO_CIPHER_3DES_CTR,
+ RTE_CRYPTO_CIPHER_KASUMI_F8,
+ RTE_CRYPTO_CIPHER_SNOW3G_UEA2,
+ RTE_CRYPTO_CIPHER_AES_F8,
+ RTE_CRYPTO_CIPHER_AES_XTS,
+ RTE_CRYPTO_CIPHER_ZUC_EEA3
+};
+
+/**
+ * VIRTIO_CRYTPO_AUTH_* indexes are not sequential, the gaps are filled with
+ * -VIRTIO_CRYPTO_BADMSG errors.
+ */
+static int auth_algo_transform[] = {
+ RTE_CRYPTO_AUTH_NULL,
+ RTE_CRYPTO_AUTH_MD5_HMAC,
+ RTE_CRYPTO_AUTH_SHA1_HMAC,
+ RTE_CRYPTO_AUTH_SHA224_HMAC,
+ RTE_CRYPTO_AUTH_SHA256_HMAC,
+ RTE_CRYPTO_AUTH_SHA384_HMAC,
+ RTE_CRYPTO_AUTH_SHA512_HMAC,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_NOTSUPP, /* VIRTIO_CRYPTO_MAC_CMAC_3DES */
+ RTE_CRYPTO_AUTH_AES_CMAC,
+ RTE_CRYPTO_AUTH_KASUMI_F9,
+ RTE_CRYPTO_AUTH_SNOW3G_UIA2,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ -VIRTIO_CRYPTO_BADMSG,
+ RTE_CRYPTO_AUTH_AES_GMAC,
+ -VIRTIO_CRYPTO_NOTSUPP, /* VIRTIO_CRYPTO_MAC_GMAC_TWOFISH */
+ RTE_CRYPTO_AUTH_AES_CBC_MAC,
+ -VIRTIO_CRYPTO_NOTSUPP, /* VIRTIO_CRYPTO_MAC_CBCMAC_KASUMI_F9 */
+ RTE_CRYPTO_AUTH_AES_XCBC_MAC
+};
+
+static int cipher_op_transform[] = {
+ -VIRTIO_CRYPTO_BADMSG, /* meaningless */
+ RTE_CRYPTO_CIPHER_OP_ENCRYPT,
+ RTE_CRYPTO_CIPHER_OP_DECRYPT
+};
+
+static int iv_lens[] = {
+ -1, /* Invalid input */
+ 0, /* RTE_CRYPTO_CIPHER_NULL */
+ 8, /* RTE_CRYPTO_CIPHER_3DES_CBC */
+ 8, /* RTE_CRYPTO_CIPHER_3DES_CTR */
+ 8, /* RTE_CRYPTO_CIPHER_3DES_ECB */
+ 16, /* RTE_CRYPTO_CIPHER_AES_CBC */
+ /* TODO: add common algos */
+};
+
+/**
+ * vhost_crypto struct is used to maintain a number of virtio_cryptos and
+ * one DPDK crypto device that deals with all crypto workloads. It is declared
+ * here and defined in vhost_crypto.c
+ */
+struct vhost_crypto {
+ /** Used to lookup DPDK Cryptodev Session based on VIRTIO crypto
+ * session ID.
+ */
+ struct rte_hash *session_map;
+ struct rte_mempool *mbuf_pool;
+ struct rte_mempool *sess_pool;
+
+ /** DPDK cryptodev ID */
+ uint8_t cid;
+ uint16_t nb_qps;
+
+ uint64_t last_session_id;
+
+ uint64_t cache_session_id;
+ struct rte_cryptodev_sym_session *cache_session;
+ /** socket id for the device */
+ int socket_id;
+
+ struct virtio_net *dev;
+
+ uint8_t option;
+} __rte_cache_aligned;
+
+struct vhost_crypto_data_req {
+ struct vring_desc *head;
+ struct rte_vhost_memory *mem;
+ struct virtio_crypto_inhdr *inhdr;
+
+ uint16_t desc_idx;
+ uint32_t len;
+ struct vhost_virtqueue *vq;
+
+ uint8_t zero_copy;
+
+ int vid;
+
+ struct vring_desc *wb_desc;
+ uint16_t wb_len;
+};
+
+static int
+transform_cipher_param(struct rte_crypto_sym_xform *xform,
+ VhostUserCryptoSessionParam *param)
+{
+ int ret;
+
+ ret = cipher_algo_transform[param->cipher_algo];
+ if (unlikely(ret < 0))
+ return ret;
+
+ xform->type = RTE_CRYPTO_SYM_XFORM_CIPHER;
+ xform->cipher.algo = ret;
+ xform->cipher.key.length = param->cipher_key_len;
+ if (xform->cipher.key.length > 0)
+ xform->cipher.key.data = param->cipher_key_buf;
+ ret = cipher_op_transform[param->dir];
+ if (unlikely(ret < 0)) {
+ VC_LOG_DBG("Bad operation type");
+ return ret;
+ }
+ xform->cipher.op = ret;
+ ret = iv_lens[xform->cipher.algo];
+ if (unlikely(ret < 0))
+ return ret;
+ xform->cipher.iv.length = ret;
+ xform->cipher.iv.offset = IV_OFFSET;
+ return 0;
+}
+
+static int
+transform_chain_param(struct rte_crypto_sym_xform *xforms,
+ VhostUserCryptoSessionParam *param)
+{
+ struct rte_crypto_sym_xform *xform_cipher, *xform_auth;
+ int ret;
+
+ switch (param->chaining_dir) {
+ case VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER:
+ xform_auth = xforms;
+ xform_cipher = xforms->next;
+ xform_cipher->cipher.op = RTE_CRYPTO_CIPHER_OP_DECRYPT;
+ xform_auth->auth.op = RTE_CRYPTO_AUTH_OP_VERIFY;
+ break;
+ case VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH:
+ xform_cipher = xforms;
+ xform_auth = xforms->next;
+ xform_cipher->cipher.op = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
+ xform_auth->auth.op = RTE_CRYPTO_AUTH_OP_GENERATE;
+ break;
+ default:
+ return -VIRTIO_CRYPTO_BADMSG;
+ }
+
+ /* cipher */
+ ret = cipher_algo_transform[param->cipher_algo];
+ if (unlikely(ret < 0))
+ return ret;
+ xform_cipher->type = RTE_CRYPTO_SYM_XFORM_CIPHER;
+ xform_cipher->cipher.algo = ret;
+ xform_cipher->cipher.key.length = param->cipher_key_len;
+ xform_cipher->cipher.key.data = param->cipher_key_buf;
+ ret = iv_lens[xform_cipher->cipher.algo];
+ if (unlikely(ret < 0))
+ return ret;
+ xform_cipher->cipher.iv.length = ret;
+ xform_cipher->cipher.iv.offset = IV_OFFSET;
+
+ /* auth */
+ xform_auth->type = RTE_CRYPTO_SYM_XFORM_AUTH;
+ ret = auth_algo_transform[param->hash_algo];
+ if (unlikely(ret < 0))
+ return ret;
+ xform_auth->auth.algo = ret;
+ xform_auth->auth.digest_length = param->digest_len;
+ xform_auth->auth.key.length = param->auth_key_len;
+ xform_auth->auth.key.data = param->auth_key_buf;
+
+ return 0;
+}
+
+static void
+vhost_crypto_create_sess(struct vhost_crypto *vcrypto,
+ VhostUserCryptoSessionParam *sess_param)
+{
+ struct rte_crypto_sym_xform xform1 = {0}, xform2 = {0};
+ struct rte_cryptodev_sym_session *session;
+ int ret;
+
+ switch (sess_param->op_type) {
+ case VIRTIO_CRYPTO_SYM_OP_NONE:
+ case VIRTIO_CRYPTO_SYM_OP_CIPHER:
+ ret = transform_cipher_param(&xform1, sess_param);
+ if (unlikely(ret)) {
+ VC_LOG_ERR("Error transform session msg (%i)", ret);
+ sess_param->session_id = ret;
+ return;
+ }
+ break;
+ case VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING:
+ if (unlikely(sess_param->hash_mode !=
+ VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH)) {
+ sess_param->session_id = -VIRTIO_CRYPTO_NOTSUPP;
+ VC_LOG_ERR("Error transform session message (%i)",
+ -VIRTIO_CRYPTO_NOTSUPP);
+ return;
+ }
+
+ xform1.next = &xform2;
+
+ ret = transform_chain_param(&xform1, sess_param);
+ if (unlikely(ret)) {
+ VC_LOG_ERR("Error transform session message (%i)", ret);
+ sess_param->session_id = ret;
+ return;
+ }
+
+ break;
+ default:
+ VC_LOG_ERR("Algorithm not yet supported");
+ sess_param->session_id = -VIRTIO_CRYPTO_NOTSUPP;
+ return;
+ }
+
+ session = rte_cryptodev_sym_session_create(vcrypto->sess_pool);
+ if (!session) {
+ VC_LOG_ERR("Failed to create session");
+ sess_param->session_id = -VIRTIO_CRYPTO_ERR;
+ return;
+ }
+
+ if (rte_cryptodev_sym_session_init(vcrypto->cid, session, &xform1,
+ vcrypto->sess_pool) < 0) {
+ VC_LOG_ERR("Failed to initialize session");
+ sess_param->session_id = -VIRTIO_CRYPTO_ERR;
+ return;
+ }
+
+ /* insert hash to map */
+ if (rte_hash_add_key_data(vcrypto->session_map,
+ &vcrypto->last_session_id, session) < 0) {
+ VC_LOG_ERR("Failed to insert session to hash table");
+
+ if (rte_cryptodev_sym_session_clear(vcrypto->cid, session) < 0)
+ VC_LOG_ERR("Failed to clear session");
+ else {
+ if (rte_cryptodev_sym_session_free(session) < 0)
+ VC_LOG_ERR("Failed to free session");
+ }
+ sess_param->session_id = -VIRTIO_CRYPTO_ERR;
+ return;
+ }
+
+ VC_LOG_DBG("Session (key %lu, session %p) created.",
+ vcrypto->last_session_id, session);
+
+ sess_param->session_id = vcrypto->last_session_id;
+ vcrypto->last_session_id++;
+}
+
+static int
+vhost_crypto_close_sess(struct vhost_crypto *vcrypto, uint64_t session_id)
+{
+ struct rte_cryptodev_sym_session *session;
+ uint64_t sess_id = session_id;
+ int ret;
+
+ ret = rte_hash_lookup_data(vcrypto->session_map, &sess_id,
+ (void **)&session);
+
+ if (unlikely(ret < 0)) {
+ VC_LOG_ERR("Failed to delete session (key %lu).", session_id);
+ return -VIRTIO_CRYPTO_INVSESS;
+ }
+
+ if (rte_cryptodev_sym_session_clear(vcrypto->cid, session) < 0) {
+ VC_LOG_DBG("Failed to delete session");
+ return -VIRTIO_CRYPTO_ERR;
+ }
+
+ if (rte_cryptodev_sym_session_free(session) < 0) {
+ VC_LOG_DBG("Failed to delete session");
+ return -VIRTIO_CRYPTO_ERR;
+ }
+
+ if (rte_hash_del_key(vcrypto->session_map, &sess_id) < 0) {
+ VC_LOG_DBG("Failed to delete session from hash table.");
+ return -VIRTIO_CRYPTO_ERR;
+ }
+
+ VC_LOG_DBG("Session (key %lu, session %p) deleted.", sess_id,
+ session);
+
+ return 0;
+}
+
+static int
+vhost_crypto_msg_post_handler(int vid, void *msg, uint32_t *require_reply)
+{
+ struct virtio_net *dev = get_device(vid);
+ struct vhost_crypto *vcrypto;
+ VhostUserMsg *vmsg = msg;
+ int ret = 0;
+
+ if (dev == NULL || require_reply == NULL) {
+ VC_LOG_ERR("Invalid vid %i", vid);
+ return -EINVAL;
+ }
+
+ vcrypto = dev->extern_data;
+ if (vcrypto == NULL) {
+ VC_LOG_ERR("Cannot find required data, is it initialized?");
+ return -ENOENT;
+ }
+
+ *require_reply = 0;
+
+ if (vmsg->request.master == VHOST_USER_CRYPTO_CREATE_SESS) {
+ vhost_crypto_create_sess(vcrypto,
+ &vmsg->payload.crypto_session);
+ *require_reply = 1;
+ } else if (vmsg->request.master == VHOST_USER_CRYPTO_CLOSE_SESS)
+ ret = vhost_crypto_close_sess(vcrypto, vmsg->payload.u64);
+ else
+ ret = -EINVAL;
+
+ return ret;
+}
--
2.7.4
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