--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016 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 <stdint.h>
+#include <unistd.h>
+
+#include <rte_mbuf.h>
+#include <rte_malloc.h>
+
+#include "rte_port_fd.h"
+
+/*
+ * Port FD Reader
+ */
+#ifdef RTE_PORT_STATS_COLLECT
+
+#define RTE_PORT_FD_READER_STATS_PKTS_IN_ADD(port, val) \
+ do { port->stats.n_pkts_in += val; } while (0)
+#define RTE_PORT_FD_READER_STATS_PKTS_DROP_ADD(port, val) \
+ do { port->stats.n_pkts_drop += val; } while (0)
+
+#else
+
+#define RTE_PORT_FD_READER_STATS_PKTS_IN_ADD(port, val)
+#define RTE_PORT_FD_READER_STATS_PKTS_DROP_ADD(port, val)
+
+#endif
+
+struct rte_port_fd_reader {
+ struct rte_port_in_stats stats;
+ int fd;
+ uint32_t mtu;
+ struct rte_mempool *mempool;
+};
+
+static void *
+rte_port_fd_reader_create(void *params, int socket_id)
+{
+ struct rte_port_fd_reader_params *conf =
+ (struct rte_port_fd_reader_params *) params;
+ struct rte_port_fd_reader *port;
+
+ /* Check input parameters */
+ if (conf == NULL) {
+ RTE_LOG(ERR, PORT, "%s: params is NULL\n", __func__);
+ return NULL;
+ }
+ if (conf->fd < 0) {
+ RTE_LOG(ERR, PORT, "%s: Invalid file descriptor\n", __func__);
+ return NULL;
+ }
+ if (conf->mtu == 0) {
+ RTE_LOG(ERR, PORT, "%s: Invalid MTU\n", __func__);
+ return NULL;
+ }
+ if (conf->mempool == NULL) {
+ RTE_LOG(ERR, PORT, "%s: Invalid mempool\n", __func__);
+ return NULL;
+ }
+
+ /* Memory allocation */
+ port = rte_zmalloc_socket("PORT", sizeof(*port),
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (port == NULL) {
+ RTE_LOG(ERR, PORT, "%s: Failed to allocate port\n", __func__);
+ return NULL;
+ }
+
+ /* Initialization */
+ port->fd = conf->fd;
+ port->mtu = conf->mtu;
+ port->mempool = conf->mempool;
+
+ return port;
+}
+
+static int
+rte_port_fd_reader_rx(void *port, struct rte_mbuf **pkts, uint32_t n_pkts)
+{
+ struct rte_port_fd_reader *p = (struct rte_port_fd_reader *) port;
+ uint32_t i;
+
+ if (rte_mempool_get_bulk(p->mempool, (void **) pkts, n_pkts) != 0)
+ return 0;
+
+ for (i = 0; i < n_pkts; i++) {
+ rte_mbuf_refcnt_set(pkts[i], 1);
+ rte_pktmbuf_reset(pkts[i]);
+ }
+
+ for (i = 0; i < n_pkts; i++) {
+ struct rte_mbuf *pkt = pkts[i];
+ void *pkt_data = rte_pktmbuf_mtod(pkt, void *);
+ ssize_t n_bytes;
+
+ n_bytes = read(p->fd, pkt_data, (size_t) p->mtu);
+ if (n_bytes <= 0)
+ break;
+
+ pkt->data_len = n_bytes;
+ pkt->pkt_len = n_bytes;
+ }
+
+ for ( ; i < n_pkts; i++)
+ rte_pktmbuf_free(pkts[i]);
+
+ RTE_PORT_FD_READER_STATS_PKTS_IN_ADD(p, i);
+
+ return n_pkts;
+}
+
+static int
+rte_port_fd_reader_free(void *port)
+{
+ if (port == NULL) {
+ RTE_LOG(ERR, PORT, "%s: port is NULL\n", __func__);
+ return -EINVAL;
+ }
+
+ rte_free(port);
+
+ return 0;
+}
+
+static int rte_port_fd_reader_stats_read(void *port,
+ struct rte_port_in_stats *stats, int clear)
+{
+ struct rte_port_fd_reader *p =
+ (struct rte_port_fd_reader *) port;
+
+ if (stats != NULL)
+ memcpy(stats, &p->stats, sizeof(p->stats));
+
+ if (clear)
+ memset(&p->stats, 0, sizeof(p->stats));
+
+ return 0;
+}
+
+/*
+ * Port FD Writer
+ */
+#ifdef RTE_PORT_STATS_COLLECT
+
+#define RTE_PORT_FD_WRITER_STATS_PKTS_IN_ADD(port, val) \
+ do { port->stats.n_pkts_in += val; } while (0)
+#define RTE_PORT_FD_WRITER_STATS_PKTS_DROP_ADD(port, val) \
+ do { port->stats.n_pkts_drop += val; } while (0)
+
+#else
+
+#define RTE_PORT_FD_WRITER_STATS_PKTS_IN_ADD(port, val)
+#define RTE_PORT_FD_WRITER_STATS_PKTS_DROP_ADD(port, val)
+
+#endif
+
+struct rte_port_fd_writer {
+ struct rte_port_out_stats stats;
+
+ struct rte_mbuf *tx_buf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
+ uint32_t tx_burst_sz;
+ uint16_t tx_buf_count;
+ uint32_t fd;
+};
+
+static void *
+rte_port_fd_writer_create(void *params, int socket_id)
+{
+ struct rte_port_fd_writer_params *conf =
+ (struct rte_port_fd_writer_params *) params;
+ struct rte_port_fd_writer *port;
+
+ /* Check input parameters */
+ if ((conf == NULL) ||
+ (conf->tx_burst_sz == 0) ||
+ (conf->tx_burst_sz > RTE_PORT_IN_BURST_SIZE_MAX) ||
+ (!rte_is_power_of_2(conf->tx_burst_sz))) {
+ RTE_LOG(ERR, PORT, "%s: Invalid input parameters\n", __func__);
+ return NULL;
+ }
+
+ /* Memory allocation */
+ port = rte_zmalloc_socket("PORT", sizeof(*port),
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (port == NULL) {
+ RTE_LOG(ERR, PORT, "%s: Failed to allocate port\n", __func__);
+ return NULL;
+ }
+
+ /* Initialization */
+ port->fd = conf->fd;
+ port->tx_burst_sz = conf->tx_burst_sz;
+ port->tx_buf_count = 0;
+
+ return port;
+}
+
+static inline void
+send_burst(struct rte_port_fd_writer *p)
+{
+ uint32_t i;
+
+ for (i = 0; i < p->tx_buf_count; i++) {
+ struct rte_mbuf *pkt = p->tx_buf[i];
+ void *pkt_data = rte_pktmbuf_mtod(pkt, void*);
+ size_t n_bytes = rte_pktmbuf_data_len(pkt);
+ ssize_t ret;
+
+ ret = write(p->fd, pkt_data, n_bytes);
+ if (ret < 0)
+ break;
+ }
+
+ RTE_PORT_FD_WRITER_STATS_PKTS_DROP_ADD(p, p->tx_buf_count - i);
+
+ for (i = 0; i < p->tx_buf_count; i++)
+ rte_pktmbuf_free(p->tx_buf[i]);
+
+ p->tx_buf_count = 0;
+}
+
+static int
+rte_port_fd_writer_tx(void *port, struct rte_mbuf *pkt)
+{
+ struct rte_port_fd_writer *p =
+ (struct rte_port_fd_writer *) port;
+
+ p->tx_buf[p->tx_buf_count++] = pkt;
+ RTE_PORT_FD_WRITER_STATS_PKTS_IN_ADD(p, 1);
+ if (p->tx_buf_count >= p->tx_burst_sz)
+ send_burst(p);
+
+ return 0;
+}
+
+static int
+rte_port_fd_writer_tx_bulk(void *port,
+ struct rte_mbuf **pkts,
+ uint64_t pkts_mask)
+{
+ struct rte_port_fd_writer *p =
+ (struct rte_port_fd_writer *) port;
+ uint32_t tx_buf_count = p->tx_buf_count;
+
+ 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++)
+ p->tx_buf[tx_buf_count++] = pkts[i];
+ RTE_PORT_FD_WRITER_STATS_PKTS_IN_ADD(p, n_pkts);
+ } 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[tx_buf_count++] = pkt;
+ RTE_PORT_FD_WRITER_STATS_PKTS_IN_ADD(p, 1);
+ pkts_mask &= ~pkt_mask;
+ }
+
+ p->tx_buf_count = tx_buf_count;
+ if (tx_buf_count >= p->tx_burst_sz)
+ send_burst(p);
+
+ return 0;
+}
+
+static int
+rte_port_fd_writer_flush(void *port)
+{
+ struct rte_port_fd_writer *p =
+ (struct rte_port_fd_writer *) port;
+
+ if (p->tx_buf_count > 0)
+ send_burst(p);
+
+ return 0;
+}
+
+static int
+rte_port_fd_writer_free(void *port)
+{
+ if (port == NULL) {
+ RTE_LOG(ERR, PORT, "%s: Port is NULL\n", __func__);
+ return -EINVAL;
+ }
+
+ rte_port_fd_writer_flush(port);
+ rte_free(port);
+
+ return 0;
+}
+
+static int rte_port_fd_writer_stats_read(void *port,
+ struct rte_port_out_stats *stats, int clear)
+{
+ struct rte_port_fd_writer *p =
+ (struct rte_port_fd_writer *) port;
+
+ if (stats != NULL)
+ memcpy(stats, &p->stats, sizeof(p->stats));
+
+ if (clear)
+ memset(&p->stats, 0, sizeof(p->stats));
+
+ return 0;
+}
+
+/*
+ * Port FD Writer Nodrop
+ */
+#ifdef RTE_PORT_STATS_COLLECT
+
+#define RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_IN_ADD(port, val) \
+ do { port->stats.n_pkts_in += val; } while (0)
+#define RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_DROP_ADD(port, val) \
+ do { port->stats.n_pkts_drop += val; } while (0)
+
+#else
+
+#define RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_IN_ADD(port, val)
+#define RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_DROP_ADD(port, val)
+
+#endif
+
+struct rte_port_fd_writer_nodrop {
+ struct rte_port_out_stats stats;
+
+ struct rte_mbuf *tx_buf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
+ uint32_t tx_burst_sz;
+ uint16_t tx_buf_count;
+ uint64_t n_retries;
+ uint32_t fd;
+};
+
+static void *
+rte_port_fd_writer_nodrop_create(void *params, int socket_id)
+{
+ struct rte_port_fd_writer_nodrop_params *conf =
+ (struct rte_port_fd_writer_nodrop_params *) params;
+ struct rte_port_fd_writer_nodrop *port;
+
+ /* Check input parameters */
+ if ((conf == NULL) ||
+ (conf->fd < 0) ||
+ (conf->tx_burst_sz == 0) ||
+ (conf->tx_burst_sz > RTE_PORT_IN_BURST_SIZE_MAX) ||
+ (!rte_is_power_of_2(conf->tx_burst_sz))) {
+ RTE_LOG(ERR, PORT, "%s: Invalid input parameters\n", __func__);
+ return NULL;
+ }
+
+ /* Memory allocation */
+ port = rte_zmalloc_socket("PORT", sizeof(*port),
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (port == NULL) {
+ RTE_LOG(ERR, PORT, "%s: Failed to allocate port\n", __func__);
+ return NULL;
+ }
+
+ /* Initialization */
+ port->fd = conf->fd;
+ port->tx_burst_sz = conf->tx_burst_sz;
+ port->tx_buf_count = 0;
+
+ /*
+ * When n_retries is 0 it means that we should wait for every packet to
+ * send no matter how many retries should it take. To limit number of
+ * branches in fast path, we use UINT64_MAX instead of branching.
+ */
+ port->n_retries = (conf->n_retries == 0) ? UINT64_MAX : conf->n_retries;
+
+ return port;
+}
+
+static inline void
+send_burst_nodrop(struct rte_port_fd_writer_nodrop *p)
+{
+ uint64_t n_retries;
+ uint32_t i;
+
+ n_retries = 0;
+ for (i = 0; (i < p->tx_buf_count) && (n_retries < p->n_retries); i++) {
+ struct rte_mbuf *pkt = p->tx_buf[i];
+ void *pkt_data = rte_pktmbuf_mtod(pkt, void*);
+ size_t n_bytes = rte_pktmbuf_data_len(pkt);
+
+ for ( ; n_retries < p->n_retries; n_retries++) {
+ ssize_t ret;
+
+ ret = write(p->fd, pkt_data, n_bytes);
+ if (ret)
+ break;
+ }
+ }
+
+ RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_DROP_ADD(p, p->tx_buf_count - i);
+
+ for (i = 0; i < p->tx_buf_count; i++)
+ rte_pktmbuf_free(p->tx_buf[i]);
+
+ p->tx_buf_count = 0;
+}
+
+static int
+rte_port_fd_writer_nodrop_tx(void *port, struct rte_mbuf *pkt)
+{
+ struct rte_port_fd_writer_nodrop *p =
+ (struct rte_port_fd_writer_nodrop *) port;
+
+ p->tx_buf[p->tx_buf_count++] = pkt;
+ RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_IN_ADD(p, 1);
+ if (p->tx_buf_count >= p->tx_burst_sz)
+ send_burst_nodrop(p);
+
+ return 0;
+}
+
+static int
+rte_port_fd_writer_nodrop_tx_bulk(void *port,
+ struct rte_mbuf **pkts,
+ uint64_t pkts_mask)
+{
+ struct rte_port_fd_writer_nodrop *p =
+ (struct rte_port_fd_writer_nodrop *) port;
+ uint32_t tx_buf_count = p->tx_buf_count;
+
+ 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++)
+ p->tx_buf[tx_buf_count++] = pkts[i];
+ RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_IN_ADD(p, n_pkts);
+ } 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[tx_buf_count++] = pkt;
+ RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_IN_ADD(p, 1);
+ pkts_mask &= ~pkt_mask;
+ }
+
+ p->tx_buf_count = tx_buf_count;
+ if (tx_buf_count >= p->tx_burst_sz)
+ send_burst_nodrop(p);
+
+ return 0;
+}
+
+static int
+rte_port_fd_writer_nodrop_flush(void *port)
+{
+ struct rte_port_fd_writer_nodrop *p =
+ (struct rte_port_fd_writer_nodrop *) port;
+
+ if (p->tx_buf_count > 0)
+ send_burst_nodrop(p);
+
+ return 0;
+}
+
+static int
+rte_port_fd_writer_nodrop_free(void *port)
+{
+ if (port == NULL) {
+ RTE_LOG(ERR, PORT, "%s: Port is NULL\n", __func__);
+ return -EINVAL;
+ }
+
+ rte_port_fd_writer_nodrop_flush(port);
+ rte_free(port);
+
+return 0;
+}
+
+static int rte_port_fd_writer_nodrop_stats_read(void *port,
+ struct rte_port_out_stats *stats, int clear)
+{
+ struct rte_port_fd_writer_nodrop *p =
+ (struct rte_port_fd_writer_nodrop *) port;
+
+ if (stats != NULL)
+ memcpy(stats, &p->stats, sizeof(p->stats));
+
+ if (clear)
+ memset(&p->stats, 0, sizeof(p->stats));
+
+ return 0;
+}
+
+/*
+ * Summary of port operations
+ */
+struct rte_port_in_ops rte_port_fd_reader_ops = {
+ .f_create = rte_port_fd_reader_create,
+ .f_free = rte_port_fd_reader_free,
+ .f_rx = rte_port_fd_reader_rx,
+ .f_stats = rte_port_fd_reader_stats_read,
+};
+
+struct rte_port_out_ops rte_port_fd_writer_ops = {
+ .f_create = rte_port_fd_writer_create,
+ .f_free = rte_port_fd_writer_free,
+ .f_tx = rte_port_fd_writer_tx,
+ .f_tx_bulk = rte_port_fd_writer_tx_bulk,
+ .f_flush = rte_port_fd_writer_flush,
+ .f_stats = rte_port_fd_writer_stats_read,
+};
+
+struct rte_port_out_ops rte_port_fd_writer_nodrop_ops = {
+ .f_create = rte_port_fd_writer_nodrop_create,
+ .f_free = rte_port_fd_writer_nodrop_free,
+ .f_tx = rte_port_fd_writer_nodrop_tx,
+ .f_tx_bulk = rte_port_fd_writer_nodrop_tx_bulk,
+ .f_flush = rte_port_fd_writer_nodrop_flush,
+ .f_stats = rte_port_fd_writer_nodrop_stats_read,
+};
Code Review / deb_dpdk.git / blobdiff