DPDK  2.2.0
ip_pipeline/pipeline/pipeline_passthrough_be.c
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <string.h>
#include <rte_common.h>
#include <rte_malloc.h>
#include <rte_byteorder.h>
#include <rte_table_stub.h>
#include <rte_table_hash.h>
#include <rte_pipeline.h>
#include "pipeline_passthrough_be.h"
#include "pipeline_actions_common.h"
#include "hash_func.h"
struct pipeline_passthrough {
struct pipeline p;
struct pipeline_passthrough_params params;
rte_table_hash_op_hash f_hash;
} __rte_cache_aligned;
static pipeline_msg_req_handler handlers[] = {
[PIPELINE_MSG_REQ_PING] =
pipeline_msg_req_ping_handler,
[PIPELINE_MSG_REQ_STATS_PORT_IN] =
pipeline_msg_req_stats_port_in_handler,
[PIPELINE_MSG_REQ_STATS_PORT_OUT] =
pipeline_msg_req_stats_port_out_handler,
[PIPELINE_MSG_REQ_STATS_TABLE] =
pipeline_msg_req_stats_table_handler,
[PIPELINE_MSG_REQ_PORT_IN_ENABLE] =
pipeline_msg_req_port_in_enable_handler,
[PIPELINE_MSG_REQ_PORT_IN_DISABLE] =
pipeline_msg_req_port_in_disable_handler,
[PIPELINE_MSG_REQ_CUSTOM] =
pipeline_msg_req_invalid_handler,
};
static inline __attribute__((always_inline)) void
pkt_work(
struct rte_mbuf *pkt,
void *arg,
uint32_t dma_size,
uint32_t hash_enabled)
{
struct pipeline_passthrough *p = arg;
uint64_t *dma_dst = RTE_MBUF_METADATA_UINT64_PTR(pkt,
p->params.dma_dst_offset);
uint64_t *dma_src = RTE_MBUF_METADATA_UINT64_PTR(pkt,
p->params.dma_src_offset);
uint64_t *dma_mask = (uint64_t *) p->params.dma_src_mask;
uint32_t *dma_hash = RTE_MBUF_METADATA_UINT32_PTR(pkt,
p->params.dma_hash_offset);
uint32_t i;
/* Read (dma_src), compute (dma_dst), write (dma_dst) */
for (i = 0; i < (dma_size / 8); i++)
dma_dst[i] = dma_src[i] & dma_mask[i];
/* Read (dma_dst), compute (hash), write (hash) */
if (hash_enabled)
*dma_hash = p->f_hash(dma_dst, dma_size, 0);
}
static inline __attribute__((always_inline)) void
pkt4_work(
struct rte_mbuf **pkts,
void *arg,
uint32_t dma_size,
uint32_t hash_enabled)
{
struct pipeline_passthrough *p = arg;
uint64_t *dma_dst0 = RTE_MBUF_METADATA_UINT64_PTR(pkts[0],
p->params.dma_dst_offset);
uint64_t *dma_dst1 = RTE_MBUF_METADATA_UINT64_PTR(pkts[1],
p->params.dma_dst_offset);
uint64_t *dma_dst2 = RTE_MBUF_METADATA_UINT64_PTR(pkts[2],
p->params.dma_dst_offset);
uint64_t *dma_dst3 = RTE_MBUF_METADATA_UINT64_PTR(pkts[3],
p->params.dma_dst_offset);
uint64_t *dma_src0 = RTE_MBUF_METADATA_UINT64_PTR(pkts[0],
p->params.dma_src_offset);
uint64_t *dma_src1 = RTE_MBUF_METADATA_UINT64_PTR(pkts[1],
p->params.dma_src_offset);
uint64_t *dma_src2 = RTE_MBUF_METADATA_UINT64_PTR(pkts[2],
p->params.dma_src_offset);
uint64_t *dma_src3 = RTE_MBUF_METADATA_UINT64_PTR(pkts[3],
p->params.dma_src_offset);
uint64_t *dma_mask = (uint64_t *) p->params.dma_src_mask;
uint32_t *dma_hash0 = RTE_MBUF_METADATA_UINT32_PTR(pkts[0],
p->params.dma_hash_offset);
uint32_t *dma_hash1 = RTE_MBUF_METADATA_UINT32_PTR(pkts[1],
p->params.dma_hash_offset);
uint32_t *dma_hash2 = RTE_MBUF_METADATA_UINT32_PTR(pkts[2],
p->params.dma_hash_offset);
uint32_t *dma_hash3 = RTE_MBUF_METADATA_UINT32_PTR(pkts[3],
p->params.dma_hash_offset);
uint32_t i;
/* Read (dma_src), compute (dma_dst), write (dma_dst) */
for (i = 0; i < (dma_size / 8); i++) {
dma_dst0[i] = dma_src0[i] & dma_mask[i];
dma_dst1[i] = dma_src1[i] & dma_mask[i];
dma_dst2[i] = dma_src2[i] & dma_mask[i];
dma_dst3[i] = dma_src3[i] & dma_mask[i];
}
/* Read (dma_dst), compute (hash), write (hash) */
if (hash_enabled) {
*dma_hash0 = p->f_hash(dma_dst0, dma_size, 0);
*dma_hash1 = p->f_hash(dma_dst1, dma_size, 0);
*dma_hash2 = p->f_hash(dma_dst2, dma_size, 0);
*dma_hash3 = p->f_hash(dma_dst3, dma_size, 0);
}
}
#define PKT_WORK(dma_size, hash_enabled) \
static inline void \
pkt_work_size##dma_size##_hash##hash_enabled( \
struct rte_mbuf *pkt, \
void *arg) \
{ \
pkt_work(pkt, arg, dma_size, hash_enabled); \
}
#define PKT4_WORK(dma_size, hash_enabled) \
static inline void \
pkt4_work_size##dma_size##_hash##hash_enabled( \
struct rte_mbuf **pkts, \
void *arg) \
{ \
pkt4_work(pkts, arg, dma_size, hash_enabled); \
}
#define port_in_ah(dma_size, hash_enabled) \
PKT_WORK(dma_size, hash_enabled) \
PKT4_WORK(dma_size, hash_enabled) \
PIPELINE_PORT_IN_AH(port_in_ah_size##dma_size##_hash##hash_enabled,\
pkt_work_size##dma_size##_hash##hash_enabled, \
pkt4_work_size##dma_size##_hash##hash_enabled)
port_in_ah(8, 0)
port_in_ah(8, 1)
port_in_ah(16, 0)
port_in_ah(16, 1)
port_in_ah(24, 0)
port_in_ah(24, 1)
port_in_ah(32, 0)
port_in_ah(32, 1)
port_in_ah(40, 0)
port_in_ah(40, 1)
port_in_ah(48, 0)
port_in_ah(48, 1)
port_in_ah(56, 0)
port_in_ah(56, 1)
port_in_ah(64, 0)
port_in_ah(64, 1)
static rte_pipeline_port_in_action_handler
get_port_in_ah(struct pipeline_passthrough *p)
{
if (p->params.dma_enabled == 0)
return NULL;
if (p->params.dma_hash_enabled)
switch (p->params.dma_size) {
case 8: return port_in_ah_size8_hash1;
case 16: return port_in_ah_size16_hash1;
case 24: return port_in_ah_size24_hash1;
case 32: return port_in_ah_size32_hash1;
case 40: return port_in_ah_size40_hash1;
case 48: return port_in_ah_size48_hash1;
case 56: return port_in_ah_size56_hash1;
case 64: return port_in_ah_size64_hash1;
default: return NULL;
}
else
switch (p->params.dma_size) {
case 8: return port_in_ah_size8_hash0;
case 16: return port_in_ah_size16_hash0;
case 24: return port_in_ah_size24_hash0;
case 32: return port_in_ah_size32_hash0;
case 40: return port_in_ah_size40_hash0;
case 48: return port_in_ah_size48_hash0;
case 56: return port_in_ah_size56_hash0;
case 64: return port_in_ah_size64_hash0;
default: return NULL;
}
}
int
pipeline_passthrough_parse_args(struct pipeline_passthrough_params *p,
struct pipeline_params *params)
{
uint32_t dma_dst_offset_present = 0;
uint32_t dma_src_offset_present = 0;
uint32_t dma_src_mask_present = 0;
uint32_t dma_size_present = 0;
uint32_t dma_hash_offset_present = 0;
uint32_t i;
/* default values */
p->dma_enabled = 0;
p->dma_hash_enabled = 0;
memset(p->dma_src_mask, 0xFF, sizeof(p->dma_src_mask));
for (i = 0; i < params->n_args; i++) {
char *arg_name = params->args_name[i];
char *arg_value = params->args_value[i];
/* dma_dst_offset */
if (strcmp(arg_name, "dma_dst_offset") == 0) {
if (dma_dst_offset_present)
return -1;
dma_dst_offset_present = 1;
p->dma_dst_offset = atoi(arg_value);
p->dma_enabled = 1;
continue;
}
/* dma_src_offset */
if (strcmp(arg_name, "dma_src_offset") == 0) {
if (dma_src_offset_present)
return -1;
dma_src_offset_present = 1;
p->dma_src_offset = atoi(arg_value);
p->dma_enabled = 1;
continue;
}
/* dma_size */
if (strcmp(arg_name, "dma_size") == 0) {
if (dma_size_present)
return -1;
dma_size_present = 1;
p->dma_size = atoi(arg_value);
if ((p->dma_size == 0) ||
(p->dma_size > PIPELINE_PASSTHROUGH_DMA_SIZE_MAX) ||
((p->dma_size % 8) != 0))
return -1;
p->dma_enabled = 1;
continue;
}
/* dma_src_mask */
if (strcmp(arg_name, "dma_src_mask") == 0) {
uint32_t dma_size;
int status;
if (dma_src_mask_present ||
(dma_size_present == 0))
return -1;
dma_src_mask_present = 1;
dma_size = p->dma_size;
status = parse_hex_string(arg_value,
p->dma_src_mask,
&dma_size);
if (status ||
(dma_size != p->dma_size))
return -1;
p->dma_enabled = 1;
continue;
}
/* dma_dst_offset */
if (strcmp(arg_name, "dma_dst_offset") == 0) {
if (dma_dst_offset_present)
return -1;
dma_dst_offset_present = 1;
p->dma_dst_offset = atoi(arg_value);
p->dma_enabled = 1;
continue;
}
/* dma_hash_offset */
if (strcmp(arg_name, "dma_hash_offset") == 0) {
if (dma_hash_offset_present)
return -1;
dma_hash_offset_present = 1;
p->dma_hash_offset = atoi(arg_value);
p->dma_hash_enabled = 1;
p->dma_enabled = 1;
continue;
}
/* any other */
return -1;
}
/* Check correlations between arguments */
if ((dma_dst_offset_present != p->dma_enabled) ||
(dma_src_offset_present != p->dma_enabled) ||
(dma_size_present != p->dma_enabled) ||
(dma_hash_offset_present != p->dma_hash_enabled) ||
(p->dma_hash_enabled > p->dma_enabled))
return -1;
return 0;
}
static rte_table_hash_op_hash
get_hash_function(struct pipeline_passthrough *p)
{
switch (p->params.dma_size) {
case 8: return hash_default_key8;
case 16: return hash_default_key16;
case 24: return hash_default_key24;
case 32: return hash_default_key32;
case 40: return hash_default_key40;
case 48: return hash_default_key48;
case 56: return hash_default_key56;
case 64: return hash_default_key64;
default: return NULL;
}
}
static void*
pipeline_passthrough_init(struct pipeline_params *params,
__rte_unused void *arg)
{
struct pipeline *p;
struct pipeline_passthrough *p_pt;
uint32_t size, i;
/* Check input arguments */
if ((params == NULL) ||
(params->n_ports_in == 0) ||
(params->n_ports_out == 0) ||
(params->n_ports_in < params->n_ports_out) ||
(params->n_ports_in % params->n_ports_out))
return NULL;
/* Memory allocation */
size = RTE_CACHE_LINE_ROUNDUP(sizeof(struct pipeline_passthrough));
p = rte_zmalloc(NULL, size, RTE_CACHE_LINE_SIZE);
p_pt = (struct pipeline_passthrough *) p;
if (p == NULL)
return NULL;
strcpy(p->name, params->name);
p->log_level = params->log_level;
PLOG(p, HIGH, "Pass-through");
/* Parse arguments */
if (pipeline_passthrough_parse_args(&p_pt->params, params))
return NULL;
p_pt->f_hash = get_hash_function(p_pt);
/* Pipeline */
{
struct rte_pipeline_params pipeline_params = {
.name = "PASS-THROUGH",
.socket_id = params->socket_id,
.offset_port_id = 0,
};
p->p = rte_pipeline_create(&pipeline_params);
if (p->p == NULL) {
rte_free(p);
return NULL;
}
}
/* Input ports */
p->n_ports_in = params->n_ports_in;
for (i = 0; i < p->n_ports_in; i++) {
struct rte_pipeline_port_in_params port_params = {
.ops = pipeline_port_in_params_get_ops(
&params->port_in[i]),
.arg_create = pipeline_port_in_params_convert(
&params->port_in[i]),
.f_action = get_port_in_ah(p_pt),
.arg_ah = p_pt,
.burst_size = params->port_in[i].burst_size,
};
int status = rte_pipeline_port_in_create(p->p,
&port_params,
&p->port_in_id[i]);
if (status) {
rte_pipeline_free(p->p);
rte_free(p);
return NULL;
}
}
/* Output ports */
p->n_ports_out = params->n_ports_out;
for (i = 0; i < p->n_ports_out; i++) {
struct rte_pipeline_port_out_params port_params = {
.ops = pipeline_port_out_params_get_ops(
&params->port_out[i]),
.arg_create = pipeline_port_out_params_convert(
&params->port_out[i]),
.f_action = NULL,
.f_action_bulk = NULL,
.arg_ah = NULL,
};
int status = rte_pipeline_port_out_create(p->p,
&port_params,
&p->port_out_id[i]);
if (status) {
rte_pipeline_free(p->p);
rte_free(p);
return NULL;
}
}
/* Tables */
p->n_tables = p->n_ports_in;
for (i = 0; i < p->n_ports_in; i++) {
struct rte_pipeline_table_params table_params = {
.ops = &rte_table_stub_ops,
.arg_create = NULL,
.f_action_hit = NULL,
.f_action_miss = NULL,
.arg_ah = NULL,
.action_data_size = 0,
};
int status = rte_pipeline_table_create(p->p,
&table_params,
&p->table_id[i]);
if (status) {
rte_pipeline_free(p->p);
rte_free(p);
return NULL;
}
}
/* Connecting input ports to tables */
for (i = 0; i < p->n_ports_in; i++) {
int status = rte_pipeline_port_in_connect_to_table(p->p,
p->port_in_id[i],
p->table_id[i]);
if (status) {
rte_pipeline_free(p->p);
rte_free(p);
return NULL;
}
}
/* Add entries to tables */
for (i = 0; i < p->n_ports_in; i++) {
struct rte_pipeline_table_entry default_entry = {
.action = RTE_PIPELINE_ACTION_PORT,
{.port_id = p->port_out_id[
i / (p->n_ports_in / p->n_ports_out)]},
};
struct rte_pipeline_table_entry *default_entry_ptr;
int status = rte_pipeline_table_default_entry_add(p->p,
p->table_id[i],
&default_entry,
&default_entry_ptr);
if (status) {
rte_pipeline_free(p->p);
rte_free(p);
return NULL;
}
}
/* Enable input ports */
for (i = 0; i < p->n_ports_in; i++) {
int status = rte_pipeline_port_in_enable(p->p,
p->port_in_id[i]);
if (status) {
rte_pipeline_free(p->p);
rte_free(p);
return NULL;
}
}
/* Check pipeline consistency */
if (rte_pipeline_check(p->p) < 0) {
rte_pipeline_free(p->p);
rte_free(p);
return NULL;
}
/* Message queues */
p->n_msgq = params->n_msgq;
for (i = 0; i < p->n_msgq; i++)
p->msgq_in[i] = params->msgq_in[i];
for (i = 0; i < p->n_msgq; i++)
p->msgq_out[i] = params->msgq_out[i];
/* Message handlers */
memcpy(p->handlers, handlers, sizeof(p->handlers));
return p;
}
static int
pipeline_passthrough_free(void *pipeline)
{
struct pipeline *p = (struct pipeline *) pipeline;
/* Check input arguments */
if (p == NULL)
return -1;
/* Free resources */
rte_pipeline_free(p->p);
rte_free(p);
return 0;
}
static int
pipeline_passthrough_timer(void *pipeline)
{
struct pipeline *p = (struct pipeline *) pipeline;
pipeline_msg_req_handle(p);
rte_pipeline_flush(p->p);
return 0;
}
static int
pipeline_passthrough_track(void *pipeline, uint32_t port_in, uint32_t *port_out)
{
struct pipeline *p = (struct pipeline *) pipeline;
/* Check input arguments */
if ((p == NULL) ||
(port_in >= p->n_ports_in) ||
(port_out == NULL))
return -1;
*port_out = port_in / p->n_ports_in;
return 0;
}
struct pipeline_be_ops pipeline_passthrough_be_ops = {
.f_init = pipeline_passthrough_init,
.f_free = pipeline_passthrough_free,
.f_run = NULL,
.f_timer = pipeline_passthrough_timer,
.f_track = pipeline_passthrough_track,
};
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