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/*
*------------------------------------------------------------------
* crypto_node.c - DPDK Cryptodev input node
*
* Copyright (c) 2016 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/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/ipsec/ipsec.h>
#include <vnet/devices/dpdk/ipsec/ipsec.h>
#define foreach_dpdk_crypto_input_next \
_(DROP, "error-drop") \
_(ENCRYPT_POST, "dpdk-esp-encrypt-post") \
_(DECRYPT_POST, "dpdk-esp-decrypt-post")
typedef enum
{
#define _(f,s) DPDK_CRYPTO_INPUT_NEXT_##f,
foreach_dpdk_crypto_input_next
#undef _
DPDK_CRYPTO_INPUT_N_NEXT,
} dpdk_crypto_input_next_t;
#define foreach_dpdk_crypto_input_error \
_(DQ_COPS, "Crypto ops dequeued") \
_(COP_FAILED, "Crypto op failed")
typedef enum
{
#define _(f,s) DPDK_CRYPTO_INPUT_ERROR_##f,
foreach_dpdk_crypto_input_error
#undef _
DPDK_CRYPTO_INPUT_N_ERROR,
} dpdk_crypto_input_error_t;
static char *dpdk_crypto_input_error_strings[] = {
#define _(n, s) s,
foreach_dpdk_crypto_input_error
#undef _
};
vlib_node_registration_t dpdk_crypto_input_node;
typedef struct
{
u32 cdev;
u32 qp;
u32 status;
u32 sa_idx;
u32 next_index;
} dpdk_crypto_input_trace_t;
static u8 *
format_dpdk_crypto_input_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
dpdk_crypto_input_trace_t *t = va_arg (*args, dpdk_crypto_input_trace_t *);
s = format (s, "dpdk_crypto: cryptodev-id %u queue-pair %u next-index %d",
t->cdev, t->qp, t->next_index);
s = format (s, " status %u sa-idx %u\n", t->status, t->sa_idx);
return s;
}
static_always_inline u32
dpdk_crypto_dequeue (vlib_main_t * vm, vlib_node_runtime_t * node,
crypto_qp_data_t * qpd)
{
u32 n_deq, *to_next = 0, next_index, n_cops, def_next_index;
struct rte_crypto_op **cops = qpd->cops;
if (qpd->inflights == 0)
return 0;
if (qpd->is_outbound)
def_next_index = DPDK_CRYPTO_INPUT_NEXT_ENCRYPT_POST;
else
def_next_index = DPDK_CRYPTO_INPUT_NEXT_DECRYPT_POST;
n_cops = rte_cryptodev_dequeue_burst (qpd->dev_id, qpd->qp_id,
cops, VLIB_FRAME_SIZE);
n_deq = n_cops;
next_index = def_next_index;
qpd->inflights -= n_cops;
ASSERT (qpd->inflights >= 0);
while (n_cops > 0)
{
u32 n_left_to_next;
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_cops > 0 && n_left_to_next > 0)
{
u32 bi0, next0;
vlib_buffer_t *b0 = 0;
struct rte_crypto_op *cop;
struct rte_crypto_sym_op *sym_cop;
cop = cops[0];
cops += 1;
n_cops -= 1;
n_left_to_next -= 1;
next0 = def_next_index;
if (PREDICT_FALSE (cop->status != RTE_CRYPTO_OP_STATUS_SUCCESS))
{
next0 = DPDK_CRYPTO_INPUT_NEXT_DROP;
vlib_node_increment_counter (vm, dpdk_crypto_input_node.index,
DPDK_CRYPTO_INPUT_ERROR_COP_FAILED,
1);
}
cop->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
sym_cop = (struct rte_crypto_sym_op *) (cop + 1);
b0 = vlib_buffer_from_rte_mbuf (sym_cop->m_src);
bi0 = vlib_get_buffer_index (vm, b0);
to_next[0] = bi0;
to_next += 1;
if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
{
vlib_trace_next_frame (vm, node, next0);
dpdk_crypto_input_trace_t *tr =
vlib_add_trace (vm, node, b0, sizeof (*tr));
tr->cdev = qpd->dev_id;
tr->qp = qpd->qp_id;
tr->status = cop->status;
tr->next_index = next0;
tr->sa_idx = vnet_buffer (b0)->ipsec.sad_index;
}
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
n_left_to_next, bi0, next0);
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
crypto_free_cop (qpd, qpd->cops, n_deq);
vlib_node_increment_counter (vm, dpdk_crypto_input_node.index,
DPDK_CRYPTO_INPUT_ERROR_DQ_COPS, n_deq);
return n_deq;
}
static uword
dpdk_crypto_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
u32 cpu_index = os_get_cpu_number ();
dpdk_crypto_main_t *dcm = &dpdk_crypto_main;
crypto_worker_main_t *cwm = &dcm->workers_main[cpu_index];
crypto_qp_data_t *qpd;
u32 n_deq = 0;
/* *INDENT-OFF* */
vec_foreach (qpd, cwm->qp_data)
n_deq += dpdk_crypto_dequeue(vm, node, qpd);
/* *INDENT-ON* */
return n_deq;
}
VLIB_REGISTER_NODE (dpdk_crypto_input_node) =
{
.function = dpdk_crypto_input_fn,.name = "dpdk-crypto-input",.format_trace =
format_dpdk_crypto_input_trace,.type = VLIB_NODE_TYPE_INPUT,.state =
VLIB_NODE_STATE_DISABLED,.n_errors =
DPDK_CRYPTO_INPUT_N_ERROR,.error_strings =
dpdk_crypto_input_error_strings,.n_next_nodes =
DPDK_CRYPTO_INPUT_N_NEXT,.next_nodes =
{
#define _(s,n) [DPDK_CRYPTO_INPUT_NEXT_##s] = n,
foreach_dpdk_crypto_input_next
#undef _
}
,};
#if DPDK_CRYPTO==1
VLIB_NODE_FUNCTION_MULTIARCH (dpdk_crypto_input_node, dpdk_crypto_input_fn)
#endif
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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