--- /dev/null
+/*-
+ * 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 <string.h>
+
+#include <rte_mbuf.h>
+#include <rte_ring.h>
+#include <rte_malloc.h>
+
+#include "rte_port_ring.h"
+
+/*
+ * Port RING Reader
+ */
+struct rte_port_ring_reader {
+ struct rte_ring *ring;
+};
+
+static void *
+rte_port_ring_reader_create(void *params, int socket_id)
+{
+ struct rte_port_ring_reader_params *conf =
+ (struct rte_port_ring_reader_params *) params;
+ struct rte_port_ring_reader *port;
+
+ /* Check input parameters */
+ if (conf == NULL) {
+ RTE_LOG(ERR, PORT, "%s: params is NULL\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->ring = conf->ring;
+
+ return port;
+}
+
+static int
+rte_port_ring_reader_rx(void *port, struct rte_mbuf **pkts, uint32_t n_pkts)
+{
+ struct rte_port_ring_reader *p = (struct rte_port_ring_reader *) port;
+
+ return rte_ring_sc_dequeue_burst(p->ring, (void **) pkts, n_pkts);
+}
+
+static int
+rte_port_ring_reader_free(void *port)
+{
+ if (port == NULL) {
+ RTE_LOG(ERR, PORT, "%s: port is NULL\n", __func__);
+ return -EINVAL;
+ }
+
+ rte_free(port);
+
+ return 0;
+}
+
+/*
+ * Port RING Writer
+ */
+struct rte_port_ring_writer {
+ struct rte_mbuf *tx_buf[RTE_PORT_IN_BURST_SIZE_MAX];
+ struct rte_ring *ring;
+ uint32_t tx_burst_sz;
+ uint32_t tx_buf_count;
+};
+
+static void *
+rte_port_ring_writer_create(void *params, int socket_id)
+{
+ struct rte_port_ring_writer_params *conf =
+ (struct rte_port_ring_writer_params *) params;
+ struct rte_port_ring_writer *port;
+
+ /* Check input parameters */
+ if ((conf == NULL) ||
+ (conf->ring == NULL) ||
+ (conf->tx_burst_sz > RTE_PORT_IN_BURST_SIZE_MAX)) {
+ RTE_LOG(ERR, PORT, "%s: Invalid Parameters\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->ring = conf->ring;
+ port->tx_burst_sz = conf->tx_burst_sz;
+ port->tx_buf_count = 0;
+
+ return port;
+}
+
+static inline void
+send_burst(struct rte_port_ring_writer *p)
+{
+ uint32_t nb_tx;
+
+ nb_tx = rte_ring_sp_enqueue_burst(p->ring, (void **)p->tx_buf,
+ p->tx_buf_count);
+
+ for ( ; nb_tx < p->tx_buf_count; nb_tx++)
+ rte_pktmbuf_free(p->tx_buf[nb_tx]);
+
+ p->tx_buf_count = 0;
+}
+
+static int
+rte_port_ring_writer_tx(void *port, struct rte_mbuf *pkt)
+{
+ struct rte_port_ring_writer *p = (struct rte_port_ring_writer *) port;
+
+ p->tx_buf[p->tx_buf_count++] = pkt;
+ if (p->tx_buf_count >= p->tx_burst_sz)
+ send_burst(p);
+
+ return 0;
+}
+
+static int
+rte_port_ring_writer_tx_bulk(void *port,
+ struct rte_mbuf **pkts,
+ uint64_t pkts_mask)
+{
+ struct rte_port_ring_writer *p = (struct rte_port_ring_writer *) port;
+
+ 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];
+
+ p->tx_buf[p->tx_buf_count++] = pkt;
+ if (p->tx_buf_count >= p->tx_burst_sz)
+ send_burst(p);
+ }
+ } 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];
+
+ p->tx_buf[p->tx_buf_count++] = pkt;
+ if (p->tx_buf_count >= p->tx_burst_sz)
+ send_burst(p);
+ pkts_mask &= ~pkt_mask;
+ }
+ }
+
+ return 0;
+}
+
+static int
+rte_port_ring_writer_flush(void *port)
+{
+ struct rte_port_ring_writer *p = (struct rte_port_ring_writer *) port;
+
+ if (p->tx_buf_count > 0)
+ send_burst(p);
+
+ return 0;
+}
+
+static int
+rte_port_ring_writer_free(void *port)
+{
+ if (port == NULL) {
+ RTE_LOG(ERR, PORT, "%s: Port is NULL\n", __func__);
+ return -EINVAL;
+ }
+
+ rte_port_ring_writer_flush(port);
+ rte_free(port);
+
+ return 0;
+}
+
+/*
+ * Summary of port operations
+ */
+struct rte_port_in_ops rte_port_ring_reader_ops = {
+ .f_create = rte_port_ring_reader_create,
+ .f_free = rte_port_ring_reader_free,
+ .f_rx = rte_port_ring_reader_rx,
+};
+
+struct rte_port_out_ops rte_port_ring_writer_ops = {
+ .f_create = rte_port_ring_writer_create,
+ .f_free = rte_port_ring_writer_free,
+ .f_tx = rte_port_ring_writer_tx,
+ .f_tx_bulk = rte_port_ring_writer_tx_bulk,
+ .f_flush = rte_port_ring_writer_flush,
+};
--- /dev/null
+/*-
+ * 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_RING_H__
+#define __INCLUDE_RTE_PORT_RING_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @file
+ * RTE Port Ring
+ *
+ * ring_reader: input port built on top of pre-initialized single consumer ring
+ * ring_writer: output port built on top of pre-initialized single producer ring
+ *
+ ***/
+
+#include <stdint.h>
+
+#include <rte_ring.h>
+
+#include "rte_port.h"
+
+/** ring_reader port parameters */
+struct rte_port_ring_reader_params {
+ /** Underlying single consumer ring that has to be pre-initialized */
+ struct rte_ring *ring;
+};
+
+/** ring_reader port operations */
+extern struct rte_port_in_ops rte_port_ring_reader_ops;
+
+/** ring_writer port parameters */
+struct rte_port_ring_writer_params {
+ /** Underlying single producer ring that has to be pre-initialized */
+ struct rte_ring *ring;
+
+ /** Recommended burst size to ring. The actual burst size can be
+ bigger or smaller than this value. */
+ uint32_t tx_burst_sz;
+};
+
+/** ring_writer port operations */
+extern struct rte_port_out_ops rte_port_ring_writer_ops;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
git.droids-corp.org / dpdk.git / commitdiff