248 lines
7.3 KiB
C
248 lines
7.3 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2013 Tilera Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Tilera Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <stdarg.h>
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#include <string.h>
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#include <stdio.h>
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#include <errno.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <sys/queue.h>
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#include <sys/stat.h>
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#include <rte_common.h>
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#include <rte_byteorder.h>
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#include <rte_log.h>
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#include <rte_debug.h>
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#include <rte_cycles.h>
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#include <rte_memory.h>
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#include <rte_memcpy.h>
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#include <rte_memzone.h>
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#include <rte_launch.h>
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#include <rte_eal.h>
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#include <rte_per_lcore.h>
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#include <rte_lcore.h>
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#include <rte_atomic.h>
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#include <rte_branch_prediction.h>
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#include <rte_mempool.h>
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#include <rte_mbuf.h>
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#include <rte_interrupts.h>
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#include <rte_pci.h>
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#include <rte_ether.h>
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#include <rte_ethdev.h>
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#include <rte_ip.h>
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#include <rte_tcp.h>
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#include <rte_udp.h>
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#include <rte_string_fns.h>
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#include <rte_flow.h>
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#include "testpmd.h"
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/* hardcoded configuration (for now) */
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static unsigned cfg_n_flows = 1024;
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static uint32_t cfg_ip_src = IPv4(10, 254, 0, 0);
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static uint32_t cfg_ip_dst = IPv4(10, 253, 0, 0);
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static uint16_t cfg_udp_src = 1000;
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static uint16_t cfg_udp_dst = 1001;
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static struct ether_addr cfg_ether_src =
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{{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x00 }};
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static struct ether_addr cfg_ether_dst =
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{{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x01 }};
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#define IP_DEFTTL 64 /* from RFC 1340. */
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#define IP_VERSION 0x40
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#define IP_HDRLEN 0x05 /* default IP header length == five 32-bits words. */
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#define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
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static inline uint16_t
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ip_sum(const unaligned_uint16_t *hdr, int hdr_len)
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{
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uint32_t sum = 0;
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while (hdr_len > 1)
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{
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sum += *hdr++;
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if (sum & 0x80000000)
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sum = (sum & 0xFFFF) + (sum >> 16);
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hdr_len -= 2;
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}
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while (sum >> 16)
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sum = (sum & 0xFFFF) + (sum >> 16);
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return ~sum;
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}
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/*
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* Multi-flow generation mode.
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*
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* We originate a bunch of flows (varying destination IP addresses), and
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* terminate receive traffic. Received traffic is simply discarded, but we
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* still do so in order to maintain traffic statistics.
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*/
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static void
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pkt_burst_flow_gen(struct fwd_stream *fs)
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{
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unsigned pkt_size = tx_pkt_length - 4; /* Adjust FCS */
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struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
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struct rte_mempool *mbp;
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struct rte_mbuf *pkt;
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struct ether_hdr *eth_hdr;
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struct ipv4_hdr *ip_hdr;
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struct udp_hdr *udp_hdr;
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uint16_t vlan_tci, vlan_tci_outer;
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uint16_t ol_flags;
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uint16_t nb_rx;
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uint16_t nb_tx;
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uint16_t nb_pkt;
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uint16_t i;
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uint32_t retry;
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#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
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uint64_t start_tsc;
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uint64_t end_tsc;
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uint64_t core_cycles;
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#endif
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static int next_flow = 0;
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#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
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start_tsc = rte_rdtsc();
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#endif
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/* Receive a burst of packets and discard them. */
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nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
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nb_pkt_per_burst);
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fs->rx_packets += nb_rx;
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for (i = 0; i < nb_rx; i++)
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rte_pktmbuf_free(pkts_burst[i]);
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mbp = current_fwd_lcore()->mbp;
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vlan_tci = ports[fs->tx_port].tx_vlan_id;
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vlan_tci_outer = ports[fs->tx_port].tx_vlan_id_outer;
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ol_flags = ports[fs->tx_port].tx_ol_flags;
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for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) {
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pkt = rte_mbuf_raw_alloc(mbp);
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if (!pkt)
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break;
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pkt->data_len = pkt_size;
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pkt->next = NULL;
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/* Initialize Ethernet header. */
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eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
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ether_addr_copy(&cfg_ether_dst, ð_hdr->d_addr);
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ether_addr_copy(&cfg_ether_src, ð_hdr->s_addr);
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eth_hdr->ether_type = rte_cpu_to_be_16(ETHER_TYPE_IPv4);
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/* Initialize IP header. */
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ip_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
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memset(ip_hdr, 0, sizeof(*ip_hdr));
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ip_hdr->version_ihl = IP_VHL_DEF;
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ip_hdr->type_of_service = 0;
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ip_hdr->fragment_offset = 0;
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ip_hdr->time_to_live = IP_DEFTTL;
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ip_hdr->next_proto_id = IPPROTO_UDP;
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ip_hdr->packet_id = 0;
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ip_hdr->src_addr = rte_cpu_to_be_32(cfg_ip_src);
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ip_hdr->dst_addr = rte_cpu_to_be_32(cfg_ip_dst +
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next_flow);
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ip_hdr->total_length = RTE_CPU_TO_BE_16(pkt_size -
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sizeof(*eth_hdr));
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ip_hdr->hdr_checksum = ip_sum((unaligned_uint16_t *)ip_hdr,
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sizeof(*ip_hdr));
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/* Initialize UDP header. */
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udp_hdr = (struct udp_hdr *)(ip_hdr + 1);
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udp_hdr->src_port = rte_cpu_to_be_16(cfg_udp_src);
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udp_hdr->dst_port = rte_cpu_to_be_16(cfg_udp_dst);
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udp_hdr->dgram_cksum = 0; /* No UDP checksum. */
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udp_hdr->dgram_len = RTE_CPU_TO_BE_16(pkt_size -
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sizeof(*eth_hdr) -
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sizeof(*ip_hdr));
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pkt->nb_segs = 1;
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pkt->pkt_len = pkt_size;
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pkt->ol_flags = ol_flags;
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pkt->vlan_tci = vlan_tci;
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pkt->vlan_tci_outer = vlan_tci_outer;
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pkt->l2_len = sizeof(struct ether_hdr);
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pkt->l3_len = sizeof(struct ipv4_hdr);
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pkts_burst[nb_pkt] = pkt;
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next_flow = (next_flow + 1) % cfg_n_flows;
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}
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nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_pkt);
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/*
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* Retry if necessary
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*/
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if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
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retry = 0;
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while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
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rte_delay_us(burst_tx_delay_time);
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nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
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&pkts_burst[nb_tx], nb_rx - nb_tx);
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}
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}
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fs->tx_packets += nb_tx;
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#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
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fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;
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#endif
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if (unlikely(nb_tx < nb_pkt)) {
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/* Back out the flow counter. */
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next_flow -= (nb_pkt - nb_tx);
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while (next_flow < 0)
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next_flow += cfg_n_flows;
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do {
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rte_pktmbuf_free(pkts_burst[nb_tx]);
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} while (++nb_tx < nb_pkt);
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}
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#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
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end_tsc = rte_rdtsc();
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core_cycles = (end_tsc - start_tsc);
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fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles);
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#endif
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}
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struct fwd_engine flow_gen_engine = {
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.fwd_mode_name = "flowgen",
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.port_fwd_begin = NULL,
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.port_fwd_end = NULL,
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.packet_fwd = pkt_burst_flow_gen,
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};
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