ceph/src/seastar/dpdk/app/test-pmd/flowgen.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2013 Tilera Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Tilera Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  */
  34
  35 #include <stdarg.h>
  36 #include <string.h>
  37 #include <stdio.h>
  38 #include <errno.h>
  39 #include <stdint.h>
  40 #include <unistd.h>
  41 #include <inttypes.h>
  42
  43 #include <sys/queue.h>
  44 #include <sys/stat.h>
  45
  46 #include <rte_common.h>
  47 #include <rte_byteorder.h>
  48 #include <rte_log.h>
  49 #include <rte_debug.h>
  50 #include <rte_cycles.h>
  51 #include <rte_memory.h>
  52 #include <rte_memcpy.h>
  53 #include <rte_launch.h>
  54 #include <rte_eal.h>
  55 #include <rte_per_lcore.h>
  56 #include <rte_lcore.h>
  57 #include <rte_atomic.h>
  58 #include <rte_branch_prediction.h>
  59 #include <rte_mempool.h>
  60 #include <rte_mbuf.h>
  61 #include <rte_interrupts.h>
  62 #include <rte_pci.h>
  63 #include <rte_ether.h>
  64 #include <rte_ethdev.h>
  65 #include <rte_ip.h>
  66 #include <rte_tcp.h>
  67 #include <rte_udp.h>
  68 #include <rte_string_fns.h>
  69 #include <rte_flow.h>
  70
  71 #include "testpmd.h"
  72
  73 /* hardcoded configuration (for now) */
  74 static unsigned cfg_n_flows     = 1024;
  75 static uint32_t cfg_ip_src      = IPv4(10, 254, 0, 0);
  76 static uint32_t cfg_ip_dst      = IPv4(10, 253, 0, 0);
  77 static uint16_t cfg_udp_src     = 1000;
  78 static uint16_t cfg_udp_dst     = 1001;
  79 static struct ether_addr cfg_ether_src  =
  80         {{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x00 }};
  81 static struct ether_addr cfg_ether_dst  =
  82         {{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x01 }};
  83
  84 #define IP_DEFTTL  64   /* from RFC 1340. */
  85 #define IP_VERSION 0x40
  86 #define IP_HDRLEN  0x05 /* default IP header length == five 32-bits words. */
  87 #define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
  88
  89 static inline uint16_t
  90 ip_sum(const unaligned_uint16_t *hdr, int hdr_len)
  91 {
  92         uint32_t sum = 0;
  93
  94         while (hdr_len > 1)
  95         {
  96                 sum += *hdr++;
  97                 if (sum & 0x80000000)
  98                         sum = (sum & 0xFFFF) + (sum >> 16);
  99                 hdr_len -= 2;
 100         }
 101
 102         while (sum >> 16)
 103                 sum = (sum & 0xFFFF) + (sum >> 16);
 104
 105         return ~sum;
 106 }
 107
 108 /*
 109  * Multi-flow generation mode.
 110  *
 111  * We originate a bunch of flows (varying destination IP addresses), and
 112  * terminate receive traffic.  Received traffic is simply discarded, but we
 113  * still do so in order to maintain traffic statistics.
 114  */
 115 static void
 116 pkt_burst_flow_gen(struct fwd_stream *fs)
 117 {
 118         unsigned pkt_size = tx_pkt_length - 4;  /* Adjust FCS */
 119         struct rte_mbuf  *pkts_burst[MAX_PKT_BURST];
 120         struct rte_mempool *mbp;
 121         struct rte_mbuf  *pkt;
 122         struct ether_hdr *eth_hdr;
 123         struct ipv4_hdr *ip_hdr;
 124         struct udp_hdr *udp_hdr;
 125         uint16_t vlan_tci, vlan_tci_outer;
 126         uint64_t ol_flags = 0;
 127         uint16_t nb_rx;
 128         uint16_t nb_tx;
 129         uint16_t nb_pkt;
 130         uint16_t i;
 131         uint32_t retry;
 132         uint64_t tx_offloads;
 133 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
 134         uint64_t start_tsc;
 135         uint64_t end_tsc;
 136         uint64_t core_cycles;
 137 #endif
 138         static int next_flow = 0;
 139
 140 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
 141         start_tsc = rte_rdtsc();
 142 #endif
 143
 144         /* Receive a burst of packets and discard them. */
 145         nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
 146                                  nb_pkt_per_burst);
 147         fs->rx_packets += nb_rx;
 148
 149         for (i = 0; i < nb_rx; i++)
 150                 rte_pktmbuf_free(pkts_burst[i]);
 151
 152         mbp = current_fwd_lcore()->mbp;
 153         vlan_tci = ports[fs->tx_port].tx_vlan_id;
 154         vlan_tci_outer = ports[fs->tx_port].tx_vlan_id_outer;
 155
 156         tx_offloads = ports[fs->tx_port].dev_conf.txmode.offloads;
 157         if (tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT)
 158                 ol_flags |= PKT_TX_VLAN_PKT;
 159         if (tx_offloads & DEV_TX_OFFLOAD_QINQ_INSERT)
 160                 ol_flags |= PKT_TX_QINQ_PKT;
 161         if (tx_offloads & DEV_TX_OFFLOAD_MACSEC_INSERT)
 162                 ol_flags |= PKT_TX_MACSEC;
 163
 164         for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) {
 165                 pkt = rte_mbuf_raw_alloc(mbp);
 166                 if (!pkt)
 167                         break;
 168
 169                 pkt->data_len = pkt_size;
 170                 pkt->next = NULL;
 171
 172                 /* Initialize Ethernet header. */
 173                 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
 174                 ether_addr_copy(&cfg_ether_dst, &eth_hdr->d_addr);
 175                 ether_addr_copy(&cfg_ether_src, &eth_hdr->s_addr);
 176                 eth_hdr->ether_type = rte_cpu_to_be_16(ETHER_TYPE_IPv4);
 177
 178                 /* Initialize IP header. */
 179                 ip_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
 180                 memset(ip_hdr, 0, sizeof(*ip_hdr));
 181                 ip_hdr->version_ihl     = IP_VHL_DEF;
 182                 ip_hdr->type_of_service = 0;
 183                 ip_hdr->fragment_offset = 0;
 184                 ip_hdr->time_to_live    = IP_DEFTTL;
 185                 ip_hdr->next_proto_id   = IPPROTO_UDP;
 186                 ip_hdr->packet_id       = 0;
 187                 ip_hdr->src_addr        = rte_cpu_to_be_32(cfg_ip_src);
 188                 ip_hdr->dst_addr        = rte_cpu_to_be_32(cfg_ip_dst +
 189                                                            next_flow);
 190                 ip_hdr->total_length    = RTE_CPU_TO_BE_16(pkt_size -
 191                                                            sizeof(*eth_hdr));
 192                 ip_hdr->hdr_checksum    = ip_sum((unaligned_uint16_t *)ip_hdr,
 193                                                  sizeof(*ip_hdr));
 194
 195                 /* Initialize UDP header. */
 196                 udp_hdr = (struct udp_hdr *)(ip_hdr + 1);
 197                 udp_hdr->src_port       = rte_cpu_to_be_16(cfg_udp_src);
 198                 udp_hdr->dst_port       = rte_cpu_to_be_16(cfg_udp_dst);
 199                 udp_hdr->dgram_cksum    = 0; /* No UDP checksum. */
 200                 udp_hdr->dgram_len      = RTE_CPU_TO_BE_16(pkt_size -
 201                                                            sizeof(*eth_hdr) -
 202                                                            sizeof(*ip_hdr));
 203                 pkt->nb_segs            = 1;
 204                 pkt->pkt_len            = pkt_size;
 205                 pkt->ol_flags           = ol_flags;
 206                 pkt->vlan_tci           = vlan_tci;
 207                 pkt->vlan_tci_outer     = vlan_tci_outer;
 208                 pkt->l2_len             = sizeof(struct ether_hdr);
 209                 pkt->l3_len             = sizeof(struct ipv4_hdr);
 210                 pkts_burst[nb_pkt]      = pkt;
 211
 212                 next_flow = (next_flow + 1) % cfg_n_flows;
 213         }
 214
 215         nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_pkt);
 216         /*
 217          * Retry if necessary
 218          */
 219         if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
 220                 retry = 0;
 221                 while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
 222                         rte_delay_us(burst_tx_delay_time);
 223                         nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
 224                                         &pkts_burst[nb_tx], nb_rx - nb_tx);
 225                 }
 226         }
 227         fs->tx_packets += nb_tx;
 228
 229 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS
 230         fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;
 231 #endif
 232         if (unlikely(nb_tx < nb_pkt)) {
 233                 /* Back out the flow counter. */
 234                 next_flow -= (nb_pkt - nb_tx);
 235                 while (next_flow < 0)
 236                         next_flow += cfg_n_flows;
 237
 238                 do {
 239                         rte_pktmbuf_free(pkts_burst[nb_tx]);
 240                 } while (++nb_tx < nb_pkt);
 241         }
 242 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
 243         end_tsc = rte_rdtsc();
 244         core_cycles = (end_tsc - start_tsc);
 245         fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles);
 246 #endif
 247 }
 248
 249 struct fwd_engine flow_gen_engine = {
 250         .fwd_mode_name  = "flowgen",
 251         .port_fwd_begin = NULL,
 252         .port_fwd_end   = NULL,
 253         .packet_fwd     = pkt_burst_flow_gen,
 254 };