diff options
Diffstat (limited to 'src/plugins/dpdk/cryptodev/cryptodev_op_data_path.c')
-rw-r--r-- | src/plugins/dpdk/cryptodev/cryptodev_op_data_path.c | 601 |
1 files changed, 601 insertions, 0 deletions
diff --git a/src/plugins/dpdk/cryptodev/cryptodev_op_data_path.c b/src/plugins/dpdk/cryptodev/cryptodev_op_data_path.c new file mode 100644 index 00000000000..86f8e041f9e --- /dev/null +++ b/src/plugins/dpdk/cryptodev/cryptodev_op_data_path.c @@ -0,0 +1,601 @@ + +/* + *------------------------------------------------------------------ + * Copyright (c) 2019 - 2021 Intel and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + *------------------------------------------------------------------ + */ + +#include <vlib/vlib.h> +#include <vnet/crypto/crypto.h> + +#include <dpdk/buffer.h> +#include <dpdk/device/dpdk.h> +#include <dpdk/device/dpdk_priv.h> +#undef always_inline +#include <rte_bus_vdev.h> +#include <rte_cryptodev.h> +#include <rte_crypto_sym.h> +#include <rte_crypto.h> +#include <rte_cryptodev_pmd.h> +#include <rte_ring_peek_zc.h> +#include <rte_config.h> + +#include "cryptodev.h" + +#if CLIB_DEBUG > 0 +#define always_inline static inline +#else +#define always_inline static inline __attribute__ ((__always_inline__)) +#endif + +#define CRYPTODEV_AAD_OFFSET (offsetof (cryptodev_op_t, aad)) + +#define foreach_vnet_crypto_status_conversion \ + _ (SUCCESS, COMPLETED) \ + _ (NOT_PROCESSED, WORK_IN_PROGRESS) \ + _ (AUTH_FAILED, FAIL_BAD_HMAC) \ + _ (INVALID_SESSION, FAIL_ENGINE_ERR) \ + _ (INVALID_ARGS, FAIL_ENGINE_ERR) \ + _ (ERROR, FAIL_ENGINE_ERR) + +static const vnet_crypto_op_status_t cryptodev_status_conversion[] = { +#define _(a, b) VNET_CRYPTO_OP_STATUS_##b, + foreach_vnet_crypto_status_conversion +#undef _ +}; + +static_always_inline rte_iova_t +cryptodev_get_iova (clib_pmalloc_main_t *pm, enum rte_iova_mode mode, + void *data) +{ + u64 index; + if (mode == RTE_IOVA_VA) + return (rte_iova_t) pointer_to_uword (data); + + index = clib_pmalloc_get_page_index (pm, data); + return pointer_to_uword (data) - pm->lookup_table[index]; +} + +static_always_inline void +cryptodev_validate_mbuf_chain (vlib_main_t *vm, struct rte_mbuf *mb, + vlib_buffer_t *b) +{ + struct rte_mbuf *first_mb = mb, *last_mb = mb; /**< last mbuf */ + /* when input node is not dpdk, mbuf data len is not initialized, for + * single buffer it is not a problem since the data length is written + * into cryptodev operation. For chained buffer a reference data length + * has to be computed through vlib_buffer. + * + * even when input node is dpdk, it is possible chained vlib_buffers + * are updated (either added or removed a buffer) but not not mbuf fields. + * we have to re-link every mbuf in the chain. + */ + u16 data_len = b->current_length + + (b->data + b->current_data - rte_pktmbuf_mtod (mb, u8 *)); + + first_mb->nb_segs = 1; + first_mb->pkt_len = first_mb->data_len = data_len; + + while (b->flags & VLIB_BUFFER_NEXT_PRESENT) + { + b = vlib_get_buffer (vm, b->next_buffer); + mb = rte_mbuf_from_vlib_buffer (b); + if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_EXT_HDR_VALID) == 0)) + rte_pktmbuf_reset (mb); + last_mb->next = mb; + last_mb = mb; + mb->data_len = b->current_length; + mb->pkt_len = b->current_length; + mb->data_off = VLIB_BUFFER_PRE_DATA_SIZE + b->current_data; + first_mb->nb_segs++; + if (PREDICT_FALSE (b->ref_count > 1)) + mb->pool = + dpdk_no_cache_mempool_by_buffer_pool_index[b->buffer_pool_index]; + } +} + +static_always_inline void +crypto_op_init (struct rte_mempool *mempool, + void *_arg __attribute__ ((unused)), void *_obj, + unsigned i __attribute__ ((unused))) +{ + struct rte_crypto_op *op = _obj; + + op->sess_type = RTE_CRYPTO_OP_WITH_SESSION; + op->type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; + op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED; + op->phys_addr = rte_mempool_virt2iova (_obj); + op->mempool = mempool; +} + +static_always_inline int +cryptodev_frame_linked_algs_enqueue (vlib_main_t *vm, + vnet_crypto_async_frame_t *frame, + cryptodev_op_type_t op_type) +{ + cryptodev_main_t *cmt = &cryptodev_main; + clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main; + cryptodev_engine_thread_t *cet = cmt->per_thread_data + vm->thread_index; + vnet_crypto_async_frame_elt_t *fe; + struct rte_cryptodev_sym_session *sess = 0; + cryptodev_op_t **cop; + u32 *bi; + u32 n_enqueue, n_elts; + u32 last_key_index = ~0; + + if (PREDICT_FALSE (frame == 0 || frame->n_elts == 0)) + return -1; + n_elts = frame->n_elts; + + if (PREDICT_FALSE (CRYPTODEV_NB_CRYPTO_OPS - cet->inflight < n_elts)) + { + cryptodev_mark_frame_err_status (frame, + VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR); + return -1; + } + + if (PREDICT_FALSE ( + rte_mempool_get_bulk (cet->cop_pool, (void **) cet->cops, n_elts) < 0)) + { + cryptodev_mark_frame_err_status (frame, + VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR); + return -1; + } + + cop = cet->cops; + fe = frame->elts; + bi = frame->buffer_indices; + cop[0]->frame = frame; + cop[0]->n_elts = n_elts; + + while (n_elts) + { + vlib_buffer_t *b = vlib_get_buffer (vm, bi[0]); + struct rte_crypto_sym_op *sop = &cop[0]->sop; + i16 crypto_offset = fe->crypto_start_offset; + i16 integ_offset = fe->integ_start_offset; + u32 offset_diff = crypto_offset - integ_offset; + + if (n_elts > 2) + { + CLIB_PREFETCH (cop[1], CLIB_CACHE_LINE_BYTES * 3, STORE); + CLIB_PREFETCH (cop[2], CLIB_CACHE_LINE_BYTES * 3, STORE); + CLIB_PREFETCH (&fe[1], CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (&fe[2], CLIB_CACHE_LINE_BYTES, LOAD); + } + if (last_key_index != fe->key_index) + { + cryptodev_key_t *key = vec_elt_at_index (cmt->keys, fe->key_index); + last_key_index = fe->key_index; + + if (key->keys[vm->numa_node][op_type] == 0) + { + if (PREDICT_FALSE ( + cryptodev_session_create (vm, last_key_index, 0) < 0)) + { + cryptodev_mark_frame_err_status ( + frame, VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR); + return -1; + } + } + sess = key->keys[vm->numa_node][op_type]; + } + + sop->m_src = rte_mbuf_from_vlib_buffer (b); + sop->m_src->data_off = VLIB_BUFFER_PRE_DATA_SIZE; + sop->m_dst = 0; + /* mbuf prepend happens in the tx, but vlib_buffer happens in the nodes, + * so we have to manually adjust mbuf data_off here so cryptodev can + * correctly compute the data pointer. The prepend here will be later + * rewritten by tx. */ + if (PREDICT_TRUE (fe->integ_start_offset < 0)) + { + sop->m_src->data_off += fe->integ_start_offset; + integ_offset = 0; + crypto_offset = offset_diff; + } + sop->session = sess; + sop->cipher.data.offset = crypto_offset; + sop->cipher.data.length = fe->crypto_total_length; + sop->auth.data.offset = integ_offset; + sop->auth.data.length = fe->crypto_total_length + fe->integ_length_adj; + sop->auth.digest.data = fe->digest; + sop->auth.digest.phys_addr = + cryptodev_get_iova (pm, cmt->iova_mode, fe->digest); + if (PREDICT_FALSE (fe->flags & VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS)) + cryptodev_validate_mbuf_chain (vm, sop->m_src, b); + else + /* for input nodes that are not dpdk-input, it is possible the mbuf + * was updated before as one of the chained mbufs. Setting nb_segs + * to 1 here to prevent the cryptodev PMD to access potentially + * invalid m_src->next pointers. + */ + sop->m_src->nb_segs = 1; + clib_memcpy_fast (cop[0]->iv, fe->iv, 16); + cop++; + bi++; + fe++; + n_elts--; + } + + n_enqueue = rte_cryptodev_enqueue_burst (cet->cryptodev_id, cet->cryptodev_q, + (struct rte_crypto_op **) cet->cops, + frame->n_elts); + ASSERT (n_enqueue == frame->n_elts); + cet->inflight += n_enqueue; + + return 0; +} + +static_always_inline int +cryptodev_frame_aead_enqueue (vlib_main_t *vm, + vnet_crypto_async_frame_t *frame, + cryptodev_op_type_t op_type, u8 aad_len) +{ + cryptodev_main_t *cmt = &cryptodev_main; + clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main; + cryptodev_engine_thread_t *cet = cmt->per_thread_data + vm->thread_index; + vnet_crypto_async_frame_elt_t *fe; + struct rte_cryptodev_sym_session *sess = 0; + cryptodev_op_t **cop; + u32 *bi; + u32 n_enqueue = 0, n_elts; + u32 last_key_index = ~0; + + if (PREDICT_FALSE (frame == 0 || frame->n_elts == 0)) + return -1; + n_elts = frame->n_elts; + + if (PREDICT_FALSE (CRYPTODEV_MAX_INFLIGHT - cet->inflight < n_elts)) + { + cryptodev_mark_frame_err_status (frame, + VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR); + return -1; + } + + if (PREDICT_FALSE ( + rte_mempool_get_bulk (cet->cop_pool, (void **) cet->cops, n_elts) < 0)) + { + cryptodev_mark_frame_err_status (frame, + VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR); + return -1; + } + + cop = cet->cops; + fe = frame->elts; + bi = frame->buffer_indices; + cop[0]->frame = frame; + cop[0]->n_elts = n_elts; + + while (n_elts) + { + vlib_buffer_t *b = vlib_get_buffer (vm, bi[0]); + struct rte_crypto_sym_op *sop = &cop[0]->sop; + u16 crypto_offset = fe->crypto_start_offset; + + if (n_elts > 2) + { + CLIB_PREFETCH (cop[1], CLIB_CACHE_LINE_BYTES * 3, STORE); + CLIB_PREFETCH (cop[2], CLIB_CACHE_LINE_BYTES * 3, STORE); + CLIB_PREFETCH (&fe[1], CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (&fe[2], CLIB_CACHE_LINE_BYTES, LOAD); + } + if (last_key_index != fe->key_index) + { + cryptodev_key_t *key = vec_elt_at_index (cmt->keys, fe->key_index); + + last_key_index = fe->key_index; + if (key->keys[vm->numa_node][op_type] == 0) + { + if (PREDICT_FALSE (cryptodev_session_create (vm, last_key_index, + aad_len) < 0)) + { + cryptodev_mark_frame_err_status ( + frame, VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR); + return -1; + } + } + else if (PREDICT_FALSE ( + key->keys[vm->numa_node][op_type]->opaque_data != + aad_len)) + { + cryptodev_sess_handler (vm, VNET_CRYPTO_KEY_OP_DEL, + fe->key_index, aad_len); + if (PREDICT_FALSE (cryptodev_session_create (vm, last_key_index, + aad_len) < 0)) + { + cryptodev_mark_frame_err_status ( + frame, VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR); + return -1; + } + } + + sess = key->keys[vm->numa_node][op_type]; + } + + sop->m_src = rte_mbuf_from_vlib_buffer (b); + sop->m_src->data_off = VLIB_BUFFER_PRE_DATA_SIZE; + sop->m_dst = 0; + /* mbuf prepend happens in the tx, but vlib_buffer happens in the nodes, + * so we have to manually adjust mbuf data_off here so cryptodev can + * correctly compute the data pointer. The prepend here will be later + * rewritten by tx. */ + if (PREDICT_FALSE (fe->crypto_start_offset < 0)) + { + rte_pktmbuf_prepend (sop->m_src, -fe->crypto_start_offset); + crypto_offset = 0; + } + + sop->session = sess; + sop->aead.aad.data = cop[0]->aad; + sop->aead.aad.phys_addr = cop[0]->op.phys_addr + CRYPTODEV_AAD_OFFSET; + sop->aead.data.length = fe->crypto_total_length; + sop->aead.data.offset = crypto_offset; + sop->aead.digest.data = fe->tag; + sop->aead.digest.phys_addr = + cryptodev_get_iova (pm, cmt->iova_mode, fe->tag); + if (PREDICT_FALSE (fe->flags & VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS)) + cryptodev_validate_mbuf_chain (vm, sop->m_src, b); + else + /* for input nodes that are not dpdk-input, it is possible the mbuf + * was updated before as one of the chained mbufs. Setting nb_segs + * to 1 here to prevent the cryptodev PMD to access potentially + * invalid m_src->next pointers. + */ + sop->m_src->nb_segs = 1; + clib_memcpy_fast (cop[0]->iv, fe->iv, 12); + clib_memcpy_fast (cop[0]->aad, fe->aad, aad_len); + cop++; + bi++; + fe++; + n_elts--; + } + + n_enqueue = rte_cryptodev_enqueue_burst (cet->cryptodev_id, cet->cryptodev_q, + (struct rte_crypto_op **) cet->cops, + frame->n_elts); + ASSERT (n_enqueue == frame->n_elts); + cet->inflight += n_enqueue; + + return 0; +} + +static_always_inline u16 +cryptodev_ring_deq (struct rte_ring *r, cryptodev_op_t **cops) +{ + u16 n, n_elts = 0; + + n = rte_ring_dequeue_bulk_start (r, (void **) cops, 1, 0); + rte_ring_dequeue_finish (r, 0); + if (!n) + return 0; + + n = cops[0]->n_elts; + if (rte_ring_count (r) < n) + return 0; + + n_elts = rte_ring_sc_dequeue_bulk (r, (void **) cops, n, 0); + ASSERT (n_elts == n); + + return n_elts; +} + +static_always_inline vnet_crypto_async_frame_t * +cryptodev_frame_dequeue (vlib_main_t *vm, u32 *nb_elts_processed, + u32 *enqueue_thread_idx) +{ + cryptodev_main_t *cmt = &cryptodev_main; + cryptodev_engine_thread_t *cet = cmt->per_thread_data + vm->thread_index; + cryptodev_op_t **cop = cet->cops; + vnet_crypto_async_frame_elt_t *fe; + vnet_crypto_async_frame_t *frame; + u32 n_elts, n_completed_ops = rte_ring_count (cet->ring); + u32 ss0 = 0, ss1 = 0, ss2 = 0, ss3 = 0; /* sum of status */ + + if (cet->inflight) + { + n_elts = rte_cryptodev_dequeue_burst ( + cet->cryptodev_id, cet->cryptodev_q, + (struct rte_crypto_op **) cet->cops, VNET_CRYPTO_FRAME_SIZE); + + if (n_elts) + { + cet->inflight -= n_elts; + n_completed_ops += n_elts; + + rte_ring_sp_enqueue_burst (cet->ring, (void **) cet->cops, n_elts, + NULL); + } + } + + if (PREDICT_FALSE (n_completed_ops == 0)) + return 0; + + n_elts = cryptodev_ring_deq (cet->ring, cop); + if (!n_elts) + return 0; + + frame = cop[0]->frame; + fe = frame->elts; + + while (n_elts > 4) + { + ss0 |= fe[0].status = cryptodev_status_conversion[cop[0]->op.status]; + ss1 |= fe[1].status = cryptodev_status_conversion[cop[1]->op.status]; + ss2 |= fe[2].status = cryptodev_status_conversion[cop[2]->op.status]; + ss3 |= fe[3].status = cryptodev_status_conversion[cop[3]->op.status]; + + cop += 4; + fe += 4; + n_elts -= 4; + } + + while (n_elts) + { + ss0 |= fe[0].status = cryptodev_status_conversion[cop[0]->op.status]; + fe++; + cop++; + n_elts--; + } + + frame->state = (ss0 | ss1 | ss2 | ss3) == VNET_CRYPTO_OP_STATUS_COMPLETED ? + VNET_CRYPTO_FRAME_STATE_SUCCESS : + VNET_CRYPTO_FRAME_STATE_ELT_ERROR; + + rte_mempool_put_bulk (cet->cop_pool, (void **) cet->cops, frame->n_elts); + *nb_elts_processed = frame->n_elts; + *enqueue_thread_idx = frame->enqueue_thread_index; + return frame; +} + +static_always_inline int +cryptodev_enqueue_aead_aad_8_enc (vlib_main_t *vm, + vnet_crypto_async_frame_t *frame) +{ + return cryptodev_frame_aead_enqueue (vm, frame, CRYPTODEV_OP_TYPE_ENCRYPT, + 8); +} +static_always_inline int +cryptodev_enqueue_aead_aad_12_enc (vlib_main_t *vm, + vnet_crypto_async_frame_t *frame) +{ + return cryptodev_frame_aead_enqueue (vm, frame, CRYPTODEV_OP_TYPE_ENCRYPT, + 12); +} + +static_always_inline int +cryptodev_enqueue_aead_aad_8_dec (vlib_main_t *vm, + vnet_crypto_async_frame_t *frame) +{ + return cryptodev_frame_aead_enqueue (vm, frame, CRYPTODEV_OP_TYPE_DECRYPT, + 8); +} +static_always_inline int +cryptodev_enqueue_aead_aad_12_dec (vlib_main_t *vm, + vnet_crypto_async_frame_t *frame) +{ + return cryptodev_frame_aead_enqueue (vm, frame, CRYPTODEV_OP_TYPE_DECRYPT, + 12); +} + +static_always_inline int +cryptodev_enqueue_linked_alg_enc (vlib_main_t *vm, + vnet_crypto_async_frame_t *frame) +{ + return cryptodev_frame_linked_algs_enqueue (vm, frame, + CRYPTODEV_OP_TYPE_ENCRYPT); +} + +static_always_inline int +cryptodev_enqueue_linked_alg_dec (vlib_main_t *vm, + vnet_crypto_async_frame_t *frame) +{ + return cryptodev_frame_linked_algs_enqueue (vm, frame, + CRYPTODEV_OP_TYPE_DECRYPT); +} + +clib_error_t * +cryptodev_register_cop_hdl (vlib_main_t *vm, u32 eidx) +{ + cryptodev_main_t *cmt = &cryptodev_main; + cryptodev_engine_thread_t *cet; + struct rte_cryptodev_sym_capability_idx cap_auth_idx; + struct rte_cryptodev_sym_capability_idx cap_cipher_idx; + struct rte_cryptodev_sym_capability_idx cap_aead_idx; + u8 *name; + clib_error_t *error = 0; + + vec_foreach (cet, cmt->per_thread_data) + { + u32 thread_index = cet - cmt->per_thread_data; + u32 numa = vlib_get_main_by_index (thread_index)->numa_node; + name = format (0, "vpp_cop_pool_%u_%u", numa, thread_index); + cet->cop_pool = rte_mempool_create ( + (char *) name, CRYPTODEV_NB_CRYPTO_OPS, sizeof (cryptodev_op_t), 0, + sizeof (struct rte_crypto_op_pool_private), NULL, NULL, crypto_op_init, + NULL, vm->numa_node, 0); + if (!cet->cop_pool) + { + error = clib_error_return ( + 0, "Failed to create cryptodev op pool %s", name); + + goto error_exit; + } + vec_free (name); + + name = format (0, "frames_ring_%u_%u", numa, thread_index); + cet->ring = + rte_ring_create ((char *) name, CRYPTODEV_NB_CRYPTO_OPS, vm->numa_node, + RING_F_SP_ENQ | RING_F_SC_DEQ); + if (!cet->ring) + { + error = clib_error_return ( + 0, "Failed to create cryptodev op pool %s", name); + + goto error_exit; + } + vec_free (name); + + vec_validate (cet->cops, VNET_CRYPTO_FRAME_SIZE - 1); + } + + /** INDENT-OFF **/ +#define _(a, b, c, d, e, f, g) \ + cap_aead_idx.type = RTE_CRYPTO_SYM_XFORM_AEAD; \ + cap_aead_idx.algo.aead = RTE_CRYPTO_##b##_##c; \ + if (cryptodev_check_cap_support (&cap_aead_idx, g, e, f)) \ + { \ + vnet_crypto_register_async_handler ( \ + vm, eidx, VNET_CRYPTO_OP_##a##_TAG##e##_AAD##f##_ENC, \ + cryptodev_enqueue_aead_aad_##f##_enc, cryptodev_frame_dequeue); \ + vnet_crypto_register_async_handler ( \ + vm, eidx, VNET_CRYPTO_OP_##a##_TAG##e##_AAD##f##_DEC, \ + cryptodev_enqueue_aead_aad_##f##_dec, cryptodev_frame_dequeue); \ + } + foreach_vnet_aead_crypto_conversion +#undef _ + +#define _(a, b, c, d, e) \ + cap_auth_idx.type = RTE_CRYPTO_SYM_XFORM_AUTH; \ + cap_auth_idx.algo.auth = RTE_CRYPTO_AUTH_##d##_HMAC; \ + cap_cipher_idx.type = RTE_CRYPTO_SYM_XFORM_CIPHER; \ + cap_cipher_idx.algo.cipher = RTE_CRYPTO_CIPHER_##b; \ + if (cryptodev_check_cap_support (&cap_cipher_idx, c, -1, -1) && \ + cryptodev_check_cap_support (&cap_auth_idx, -1, e, -1)) \ + { \ + vnet_crypto_register_async_handler ( \ + vm, eidx, VNET_CRYPTO_OP_##a##_##d##_TAG##e##_ENC, \ + cryptodev_enqueue_linked_alg_enc, cryptodev_frame_dequeue); \ + vnet_crypto_register_async_handler ( \ + vm, eidx, VNET_CRYPTO_OP_##a##_##d##_TAG##e##_DEC, \ + cryptodev_enqueue_linked_alg_dec, cryptodev_frame_dequeue); \ + } + foreach_cryptodev_link_async_alg +#undef _ + /** INDENT-ON **/ + + return 0; + +error_exit: + vec_foreach (cet, cmt->per_thread_data) + { + if (cet->ring) + rte_ring_free (cet->ring); + + if (cet->cop_pool) + rte_mempool_free (cet->cop_pool); + } + + return error; +} |