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port: source and sink

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Source port is a packet generator, similar to /dev/zero Linux device.

Sink port is a packet terminator (drops all input packets), similar
to /dev/null Linux device.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Acked-by: Pablo de Lara Guarch <pablo.de.lara.guarch@intel.com>
Acked by: Ivan Boule <ivan.boule@6wind.com>
This commit is contained in:
Cristian Dumitrescu 2014-06-04 19:08:25 +01:00 committed by Thomas Monjalon
parent 8dceb6aa6e
commit ef3403fb6f
4 changed files with 231 additions and 0 deletions
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1
doc/doxy-api-index.md
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@ -107,6 +107,7 @@ There are many libraries, so their headers may be grouped by topics:
[frag] (@ref rte_port_frag.h),
[reass] (@ref rte_port_ras.h),
[sched] (@ref rte_port_sched.h),
[src/sink] (@ref rte_port_source_sink.h)
- **basic**:
[approx fraction] (@ref rte_approx.h),

2
lib/librte_port/Makefile
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@ -51,6 +51,7 @@ endif
SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_ras.c
endif
SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_sched.c
SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_source_sink.c
# install includes
SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port.h
@ -63,6 +64,7 @@ endif
SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_ras.h
endif
SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_sched.h
SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_source_sink.h
# this lib depends upon:
DEPDIRS-$(CONFIG_RTE_LIBRTE_PORT) := lib/librte_eal

158
lib/librte_port/rte_port_source_sink.c Normal file
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@ -0,0 +1,158 @@
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 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 <stdint.h>
#include <string.h>
#include <rte_mbuf.h>
#include <rte_mempool.h>
#include <rte_malloc.h>
#include "rte_port_source_sink.h"
/*
* Port SOURCE
*/
struct rte_port_source {
struct rte_mempool *mempool;
};
static void *
rte_port_source_create(void *params, int socket_id)
{
struct rte_port_source_params *p =
(struct rte_port_source_params *) params;
struct rte_port_source *port;
/* Check input arguments*/
if ((p == NULL) || (p->mempool == NULL)) {
RTE_LOG(ERR, PORT, "%s: Invalid params\n", __func__);
return NULL;
}
/* Memory allocation */
port = rte_zmalloc_socket("PORT", sizeof(*port),
CACHE_LINE_SIZE, socket_id);
if (port == NULL) {
RTE_LOG(ERR, PORT, "%s: Failed to allocate port\n", __func__);
return NULL;
}
/* Initialization */
port->mempool = (struct rte_mempool *) p->mempool;
return port;
}
static int
rte_port_source_free(void *port)
{
/* Check input parameters */
if (port == NULL)
return 0;
rte_free(port);
return 0;
}
static int
rte_port_source_rx(void *port, struct rte_mbuf **pkts, uint32_t n_pkts)
{
struct rte_port_source *p = (struct rte_port_source *) port;
if (rte_mempool_get_bulk(p->mempool, (void **) pkts, n_pkts) != 0)
return 0;
return n_pkts;
}
/*
* Port SINK
*/
static void *
rte_port_sink_create(__rte_unused void *params, __rte_unused int socket_id)
{
return (void *) 1;
}
static int
rte_port_sink_tx(__rte_unused void *port, struct rte_mbuf *pkt)
{
rte_pktmbuf_free(pkt);
return 0;
}
static int
rte_port_sink_tx_bulk(__rte_unused void *port, struct rte_mbuf **pkts,
uint64_t pkts_mask)
{
if ((pkts_mask & (pkts_mask + 1)) == 0) {
uint64_t n_pkts = __builtin_popcountll(pkts_mask);
uint32_t i;
for (i = 0; i < n_pkts; i++) {
struct rte_mbuf *pkt = pkts[i];
rte_pktmbuf_free(pkt);
}
} else {
for ( ; pkts_mask; ) {
uint32_t pkt_index = __builtin_ctzll(pkts_mask);
uint64_t pkt_mask = 1LLU << pkt_index;
struct rte_mbuf *pkt = pkts[pkt_index];
rte_pktmbuf_free(pkt);
pkts_mask &= ~pkt_mask;
}
}
return 0;
}
/*
* Summary of port operations
*/
struct rte_port_in_ops rte_port_source_ops = {
.f_create = rte_port_source_create,
.f_free = rte_port_source_free,
.f_rx = rte_port_source_rx,
};
struct rte_port_out_ops rte_port_sink_ops = {
.f_create = rte_port_sink_create,
.f_free = NULL,
.f_tx = rte_port_sink_tx,
.f_tx_bulk = rte_port_sink_tx_bulk,
.f_flush = NULL,
};

70
lib/librte_port/rte_port_source_sink.h Normal file
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@ -0,0 +1,70 @@
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 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.
*/
#ifndef __INCLUDE_RTE_PORT_SOURCE_SINK_H__
#define __INCLUDE_RTE_PORT_SOURCE_SINK_H__
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file
* RTE Port Source/Sink
*
* source: input port that can be used to generate packets
* sink: output port that drops all packets written to it
*
***/
#include "rte_port.h"
/** source port parameters */
struct rte_port_source_params {
/** Pre-initialized buffer pool */
struct rte_mempool *mempool;
};
/** source port operations */
extern struct rte_port_in_ops rte_port_source_ops;
/** sink port parameters: NONE */
/** sink port operations */
extern struct rte_port_out_ops rte_port_sink_ops;
#ifdef __cplusplus
}
#endif
#endif