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Diffstat (limited to 'examples/server_node_efd/server/main.c')
| -rw-r--r-- | examples/server_node_efd/server/main.c | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/examples/server_node_efd/server/main.c b/examples/server_node_efd/server/main.c new file mode 100644 index 00000000..597b4c25 --- /dev/null +++ b/examples/server_node_efd/server/main.c @@ -0,0 +1,362 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2016-2017 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 <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <stdint.h> +#include <stdarg.h> +#include <inttypes.h> +#include <inttypes.h> +#include <sys/queue.h> +#include <errno.h> +#include <netinet/ip.h> + +#include <rte_common.h> +#include <rte_memory.h> +#include <rte_memzone.h> +#include <rte_eal.h> +#include <rte_byteorder.h> +#include <rte_launch.h> +#include <rte_per_lcore.h> +#include <rte_lcore.h> +#include <rte_branch_prediction.h> +#include <rte_atomic.h> +#include <rte_ring.h> +#include <rte_log.h> +#include <rte_debug.h> +#include <rte_mempool.h> +#include <rte_memcpy.h> +#include <rte_mbuf.h> +#include <rte_ether.h> +#include <rte_interrupts.h> +#include <rte_pci.h> +#include <rte_ethdev.h> +#include <rte_byteorder.h> +#include <rte_malloc.h> +#include <rte_string_fns.h> +#include <rte_efd.h> +#include <rte_ip.h> + +#include "common.h" +#include "args.h" +#include "init.h" + +/* + * When doing reads from the NIC or the node queues, + * use this batch size + */ +#define PACKET_READ_SIZE 32 + +/* + * Local buffers to put packets in, used to send packets in bursts to the + * nodes + */ +struct node_rx_buf { + struct rte_mbuf *buffer[PACKET_READ_SIZE]; + uint16_t count; +}; + +struct efd_stats { + uint64_t distributed; + uint64_t drop; +} flow_dist_stats; + +/* One buffer per node rx queue - dynamically allocate array */ +static struct node_rx_buf *cl_rx_buf; + +static const char * +get_printable_mac_addr(uint8_t port) +{ + static const char err_address[] = "00:00:00:00:00:00"; + static char addresses[RTE_MAX_ETHPORTS][sizeof(err_address)]; + struct ether_addr mac; + + if (unlikely(port >= RTE_MAX_ETHPORTS)) + return err_address; + if (unlikely(addresses[port][0] == '\0')) { + rte_eth_macaddr_get(port, &mac); + snprintf(addresses[port], sizeof(addresses[port]), + "%02x:%02x:%02x:%02x:%02x:%02x\n", + mac.addr_bytes[0], mac.addr_bytes[1], + mac.addr_bytes[2], mac.addr_bytes[3], + mac.addr_bytes[4], mac.addr_bytes[5]); + } + return addresses[port]; +} + +/* + * This function displays the recorded statistics for each port + * and for each node. It uses ANSI terminal codes to clear + * screen when called. It is called from a single non-master + * thread in the server process, when the process is run with more + * than one lcore enabled. + */ +static void +do_stats_display(void) +{ + unsigned int i, j; + const char clr[] = {27, '[', '2', 'J', '\0'}; + const char topLeft[] = {27, '[', '1', ';', '1', 'H', '\0'}; + uint64_t port_tx[RTE_MAX_ETHPORTS], port_tx_drop[RTE_MAX_ETHPORTS]; + uint64_t node_tx[MAX_NODES], node_tx_drop[MAX_NODES]; + + /* to get TX stats, we need to do some summing calculations */ + memset(port_tx, 0, sizeof(port_tx)); + memset(port_tx_drop, 0, sizeof(port_tx_drop)); + memset(node_tx, 0, sizeof(node_tx)); + memset(node_tx_drop, 0, sizeof(node_tx_drop)); + + for (i = 0; i < num_nodes; i++) { + const struct tx_stats *tx = &info->tx_stats[i]; + + for (j = 0; j < info->num_ports; j++) { + const uint64_t tx_val = tx->tx[info->id[j]]; + const uint64_t drop_val = tx->tx_drop[info->id[j]]; + + port_tx[j] += tx_val; + port_tx_drop[j] += drop_val; + node_tx[i] += tx_val; + node_tx_drop[i] += drop_val; + } + } + + /* Clear screen and move to top left */ + printf("%s%s", clr, topLeft); + + printf("PORTS\n"); + printf("-----\n"); + for (i = 0; i < info->num_ports; i++) + printf("Port %u: '%s'\t", (unsigned int)info->id[i], + get_printable_mac_addr(info->id[i])); + printf("\n\n"); + for (i = 0; i < info->num_ports; i++) { + printf("Port %u - rx: %9"PRIu64"\t" + "tx: %9"PRIu64"\n", + (unsigned int)info->id[i], info->rx_stats.rx[i], + port_tx[i]); + } + + printf("\nSERVER\n"); + printf("-----\n"); + printf("distributed: %9"PRIu64", drop: %9"PRIu64"\n", + flow_dist_stats.distributed, flow_dist_stats.drop); + + printf("\nNODES\n"); + printf("-------\n"); + for (i = 0; i < num_nodes; i++) { + const unsigned long long rx = nodes[i].stats.rx; + const unsigned long long rx_drop = nodes[i].stats.rx_drop; + const struct filter_stats *filter = &info->filter_stats[i]; + + printf("Node %2u - rx: %9llu, rx_drop: %9llu\n" + " tx: %9"PRIu64", tx_drop: %9"PRIu64"\n" + " filter_passed: %9"PRIu64", " + "filter_drop: %9"PRIu64"\n", + i, rx, rx_drop, node_tx[i], node_tx_drop[i], + filter->passed, filter->drop); + } + + printf("\n"); +} + +/* + * The function called from each non-master lcore used by the process. + * The test_and_set function is used to randomly pick a single lcore on which + * the code to display the statistics will run. Otherwise, the code just + * repeatedly sleeps. + */ +static int +sleep_lcore(__attribute__((unused)) void *dummy) +{ + /* Used to pick a display thread - static, so zero-initialised */ + static rte_atomic32_t display_stats; + + /* Only one core should display stats */ + if (rte_atomic32_test_and_set(&display_stats)) { + const unsigned int sleeptime = 1; + + printf("Core %u displaying statistics\n", rte_lcore_id()); + + /* Longer initial pause so above printf is seen */ + sleep(sleeptime * 3); + + /* Loop forever: sleep always returns 0 or <= param */ + while (sleep(sleeptime) <= sleeptime) + do_stats_display(); + } + return 0; +} + +/* + * Function to set all the node statistic values to zero. + * Called at program startup. + */ +static void +clear_stats(void) +{ + unsigned int i; + + for (i = 0; i < num_nodes; i++) + nodes[i].stats.rx = nodes[i].stats.rx_drop = 0; +} + +/* + * send a burst of traffic to a node, assuming there are packets + * available to be sent to this node + */ +static void +flush_rx_queue(uint16_t node) +{ + uint16_t j; + struct node *cl; + + if (cl_rx_buf[node].count == 0) + return; + + cl = &nodes[node]; + if (rte_ring_enqueue_bulk(cl->rx_q, (void **)cl_rx_buf[node].buffer, + cl_rx_buf[node].count, NULL) != cl_rx_buf[node].count){ + for (j = 0; j < cl_rx_buf[node].count; j++) + rte_pktmbuf_free(cl_rx_buf[node].buffer[j]); + cl->stats.rx_drop += cl_rx_buf[node].count; + } else + cl->stats.rx += cl_rx_buf[node].count; + + cl_rx_buf[node].count = 0; +} + +/* + * marks a packet down to be sent to a particular node process + */ +static inline void +enqueue_rx_packet(uint8_t node, struct rte_mbuf *buf) +{ + cl_rx_buf[node].buffer[cl_rx_buf[node].count++] = buf; +} + +/* + * This function takes a group of packets and routes them + * individually to the node process. Very simply round-robins the packets + * without checking any of the packet contents. + */ +static void +process_packets(uint32_t port_num __rte_unused, struct rte_mbuf *pkts[], + uint16_t rx_count, unsigned int socket_id) +{ + uint16_t i; + uint8_t node; + efd_value_t data[RTE_EFD_BURST_MAX]; + const void *key_ptrs[RTE_EFD_BURST_MAX]; + + struct ipv4_hdr *ipv4_hdr; + uint32_t ipv4_dst_ip[RTE_EFD_BURST_MAX]; + + for (i = 0; i < rx_count; i++) { + /* Handle IPv4 header.*/ + ipv4_hdr = rte_pktmbuf_mtod_offset(pkts[i], struct ipv4_hdr *, + sizeof(struct ether_hdr)); + ipv4_dst_ip[i] = ipv4_hdr->dst_addr; + key_ptrs[i] = (void *)&ipv4_dst_ip[i]; + } + + rte_efd_lookup_bulk(efd_table, socket_id, rx_count, + (const void **) key_ptrs, data); + for (i = 0; i < rx_count; i++) { + node = (uint8_t) ((uintptr_t)data[i]); + + if (node >= num_nodes) { + /* + * Node is out of range, which means that + * flow has not been inserted + */ + flow_dist_stats.drop++; + rte_pktmbuf_free(pkts[i]); + } else { + flow_dist_stats.distributed++; + enqueue_rx_packet(node, pkts[i]); + } + } + + for (i = 0; i < num_nodes; i++) + flush_rx_queue(i); +} + +/* + * Function called by the master lcore of the DPDK process. + */ +static void +do_packet_forwarding(void) +{ + unsigned int port_num = 0; /* indexes the port[] array */ + unsigned int socket_id = rte_socket_id(); + + for (;;) { + struct rte_mbuf *buf[PACKET_READ_SIZE]; + uint16_t rx_count; + + /* read a port */ + rx_count = rte_eth_rx_burst(info->id[port_num], 0, + buf, PACKET_READ_SIZE); + info->rx_stats.rx[port_num] += rx_count; + + /* Now process the NIC packets read */ + if (likely(rx_count > 0)) + process_packets(port_num, buf, rx_count, socket_id); + + /* move to next port */ + if (++port_num == info->num_ports) + port_num = 0; + } +} + +int +main(int argc, char *argv[]) +{ + /* initialise the system */ + if (init(argc, argv) < 0) + return -1; + RTE_LOG(INFO, APP, "Finished Process Init.\n"); + + cl_rx_buf = calloc(num_nodes, sizeof(cl_rx_buf[0])); + + /* clear statistics */ + clear_stats(); + + /* put all other cores to sleep bar master */ + rte_eal_mp_remote_launch(sleep_lcore, NULL, SKIP_MASTER); + + do_packet_forwarding(); + return 0; +} |