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Diffstat (limited to 'app/test-pmd/flowgen.c')
| -rw-r--r-- | app/test-pmd/flowgen.c | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/app/test-pmd/flowgen.c b/app/test-pmd/flowgen.c new file mode 100644 index 00000000..0f307e85 --- /dev/null +++ b/app/test-pmd/flowgen.c @@ -0,0 +1,248 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2013 Tilera 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 Tilera 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 <stdarg.h> +#include <string.h> +#include <stdio.h> +#include <errno.h> +#include <stdint.h> +#include <unistd.h> +#include <inttypes.h> + +#include <sys/queue.h> +#include <sys/stat.h> + +#include <rte_common.h> +#include <rte_byteorder.h> +#include <rte_log.h> +#include <rte_debug.h> +#include <rte_cycles.h> +#include <rte_memory.h> +#include <rte_memcpy.h> +#include <rte_memzone.h> +#include <rte_launch.h> +#include <rte_eal.h> +#include <rte_per_lcore.h> +#include <rte_lcore.h> +#include <rte_atomic.h> +#include <rte_branch_prediction.h> +#include <rte_ring.h> +#include <rte_memory.h> +#include <rte_mempool.h> +#include <rte_mbuf.h> +#include <rte_interrupts.h> +#include <rte_pci.h> +#include <rte_ether.h> +#include <rte_ethdev.h> +#include <rte_ip.h> +#include <rte_tcp.h> +#include <rte_udp.h> +#include <rte_string_fns.h> + +#include "testpmd.h" + +/* hardcoded configuration (for now) */ +static unsigned cfg_n_flows = 1024; +static unsigned cfg_pkt_size = 300; +static uint32_t cfg_ip_src = IPv4(10, 254, 0, 0); +static uint32_t cfg_ip_dst = IPv4(10, 253, 0, 0); +static uint16_t cfg_udp_src = 1000; +static uint16_t cfg_udp_dst = 1001; +static struct ether_addr cfg_ether_src = + {{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x00 }}; +static struct ether_addr cfg_ether_dst = + {{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x01 }}; + +#define IP_DEFTTL 64 /* from RFC 1340. */ +#define IP_VERSION 0x40 +#define IP_HDRLEN 0x05 /* default IP header length == five 32-bits words. */ +#define IP_VHL_DEF (IP_VERSION | IP_HDRLEN) + +static inline struct rte_mbuf * +tx_mbuf_alloc(struct rte_mempool *mp) +{ + struct rte_mbuf *m; + + m = __rte_mbuf_raw_alloc(mp); + __rte_mbuf_sanity_check_raw(m, 0); + return m; +} + + +static inline uint16_t +ip_sum(const unaligned_uint16_t *hdr, int hdr_len) +{ + uint32_t sum = 0; + + while (hdr_len > 1) + { + sum += *hdr++; + if (sum & 0x80000000) + sum = (sum & 0xFFFF) + (sum >> 16); + hdr_len -= 2; + } + + while (sum >> 16) + sum = (sum & 0xFFFF) + (sum >> 16); + + return ~sum; +} + +/* + * Multi-flow generation mode. + * + * We originate a bunch of flows (varying destination IP addresses), and + * terminate receive traffic. Received traffic is simply discarded, but we + * still do so in order to maintain traffic statistics. + */ +static void +pkt_burst_flow_gen(struct fwd_stream *fs) +{ + unsigned pkt_size = cfg_pkt_size - 4; /* Adjust FCS */ + struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; + struct rte_mempool *mbp; + struct rte_mbuf *pkt; + struct ether_hdr *eth_hdr; + struct ipv4_hdr *ip_hdr; + struct udp_hdr *udp_hdr; + uint16_t vlan_tci, vlan_tci_outer; + uint16_t ol_flags; + uint16_t nb_rx; + uint16_t nb_tx; + uint16_t nb_pkt; + uint16_t i; +#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES + uint64_t start_tsc; + uint64_t end_tsc; + uint64_t core_cycles; +#endif + static int next_flow = 0; + +#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES + start_tsc = rte_rdtsc(); +#endif + + /* Receive a burst of packets and discard them. */ + nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst, + nb_pkt_per_burst); + fs->rx_packets += nb_rx; + + for (i = 0; i < nb_rx; i++) + rte_pktmbuf_free(pkts_burst[i]); + + mbp = current_fwd_lcore()->mbp; + vlan_tci = ports[fs->tx_port].tx_vlan_id; + vlan_tci_outer = ports[fs->tx_port].tx_vlan_id_outer; + ol_flags = ports[fs->tx_port].tx_ol_flags; + + for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) { + pkt = tx_mbuf_alloc(mbp); + if (!pkt) + break; + + pkt->data_len = pkt_size; + pkt->next = NULL; + + /* Initialize Ethernet header. */ + eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *); + ether_addr_copy(&cfg_ether_dst, ð_hdr->d_addr); + ether_addr_copy(&cfg_ether_src, ð_hdr->s_addr); + eth_hdr->ether_type = rte_cpu_to_be_16(ETHER_TYPE_IPv4); + + /* Initialize IP header. */ + ip_hdr = (struct ipv4_hdr *)(eth_hdr + 1); + memset(ip_hdr, 0, sizeof(*ip_hdr)); + ip_hdr->version_ihl = IP_VHL_DEF; + ip_hdr->type_of_service = 0; + ip_hdr->fragment_offset = 0; + ip_hdr->time_to_live = IP_DEFTTL; + ip_hdr->next_proto_id = IPPROTO_UDP; + ip_hdr->packet_id = 0; + ip_hdr->src_addr = rte_cpu_to_be_32(cfg_ip_src); + ip_hdr->dst_addr = rte_cpu_to_be_32(cfg_ip_dst + + next_flow); + ip_hdr->total_length = RTE_CPU_TO_BE_16(pkt_size - + sizeof(*eth_hdr)); + ip_hdr->hdr_checksum = ip_sum((unaligned_uint16_t *)ip_hdr, + sizeof(*ip_hdr)); + + /* Initialize UDP header. */ + udp_hdr = (struct udp_hdr *)(ip_hdr + 1); + udp_hdr->src_port = rte_cpu_to_be_16(cfg_udp_src); + udp_hdr->dst_port = rte_cpu_to_be_16(cfg_udp_dst); + udp_hdr->dgram_cksum = 0; /* No UDP checksum. */ + udp_hdr->dgram_len = RTE_CPU_TO_BE_16(pkt_size - + sizeof(*eth_hdr) - + sizeof(*ip_hdr)); + pkt->nb_segs = 1; + pkt->pkt_len = pkt_size; + pkt->ol_flags = ol_flags; + pkt->vlan_tci = vlan_tci; + pkt->vlan_tci_outer = vlan_tci_outer; + pkt->l2_len = sizeof(struct ether_hdr); + pkt->l3_len = sizeof(struct ipv4_hdr); + pkts_burst[nb_pkt] = pkt; + + next_flow = (next_flow + 1) % cfg_n_flows; + } + + nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_pkt); + fs->tx_packets += nb_tx; + +#ifdef RTE_TEST_PMD_RECORD_BURST_STATS + fs->tx_burst_stats.pkt_burst_spread[nb_tx]++; +#endif + if (unlikely(nb_tx < nb_pkt)) { + /* Back out the flow counter. */ + next_flow -= (nb_pkt - nb_tx); + while (next_flow < 0) + next_flow += cfg_n_flows; + + do { + rte_pktmbuf_free(pkts_burst[nb_tx]); + } while (++nb_tx < nb_pkt); + } +#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES + end_tsc = rte_rdtsc(); + core_cycles = (end_tsc - start_tsc); + fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles); +#endif +} + +struct fwd_engine flow_gen_engine = { + .fwd_mode_name = "flowgen", + .port_fwd_begin = NULL, + .port_fwd_end = NULL, + .packet_fwd = pkt_burst_flow_gen, +}; |