[dpdk-dev] [PATCH 6/6] test-pmd: add flowgen forwarding engine
Cyril Chemparathy
cchemparathy at tilera.com
Thu Apr 3 19:30:16 CEST 2014
This commit adds a multi-flow traffic generator forwarding engine. In effect,
this forwarding mode functions very similar to the txonly mode, with the
difference that it generates multiple L4 flows.
Signed-off-by: Cyril Chemparathy <cchemparathy at tilera.com>
---
app/test-pmd/Makefile | 1 +
app/test-pmd/flowgen.c | 247 +++++++++++++++++++++++++++++++++++++++++++++++++
app/test-pmd/testpmd.c | 1 +
app/test-pmd/testpmd.h | 1 +
4 files changed, 250 insertions(+)
create mode 100644 app/test-pmd/flowgen.c
diff --git a/app/test-pmd/Makefile b/app/test-pmd/Makefile
index f0d0262..6ed2634 100644
--- a/app/test-pmd/Makefile
+++ b/app/test-pmd/Makefile
@@ -52,6 +52,7 @@ SRCS-$(CONFIG_RTE_TEST_PMD) += iofwd.c
SRCS-$(CONFIG_RTE_TEST_PMD) += macfwd.c
SRCS-$(CONFIG_RTE_TEST_PMD) += macfwd-retry.c
SRCS-$(CONFIG_RTE_TEST_PMD) += macswap.c
+SRCS-$(CONFIG_RTE_TEST_PMD) += flowgen.c
SRCS-$(CONFIG_RTE_TEST_PMD) += rxonly.c
SRCS-$(CONFIG_RTE_TEST_PMD) += txonly.c
SRCS-$(CONFIG_RTE_TEST_PMD) += csumonly.c
diff --git a/app/test-pmd/flowgen.c b/app/test-pmd/flowgen.c
new file mode 100644
index 0000000..04911ff
--- /dev/null
+++ b/app/test-pmd/flowgen.c
@@ -0,0 +1,247 @@
+/*-
+ * 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_tailq.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, RTE_MBUF_PKT, 0);
+ return (m);
+}
+
+
+static inline uint16_t
+ip_sum(const 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;
+ 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;
+ 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->pkt.data_len = pkt_size;
+ pkt->pkt.next = NULL;
+
+ /* Initialize Ethernet header. */
+ eth_hdr = (struct ether_hdr *)pkt->pkt.data;
+ 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((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->pkt.nb_segs = 1;
+ pkt->pkt.pkt_len = pkt_size;
+ pkt->ol_flags = ol_flags;
+ pkt->pkt.vlan_macip.f.vlan_tci = vlan_tci;
+ pkt->pkt.vlan_macip.f.l2_len = sizeof(struct ether_hdr);
+ pkt->pkt.vlan_macip.f.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,
+};
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index c75ae8e..0aa0afa 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -146,6 +146,7 @@ struct fwd_engine * fwd_engines[] = {
&mac_fwd_engine,
&mac_retry_fwd_engine,
&mac_swap_engine,
+ &flow_gen_engine,
&rx_only_engine,
&tx_only_engine,
&csum_fwd_engine,
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index 1b9ca65..3f0ecfc 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -201,6 +201,7 @@ extern struct fwd_engine io_fwd_engine;
extern struct fwd_engine mac_fwd_engine;
extern struct fwd_engine mac_retry_fwd_engine;
extern struct fwd_engine mac_swap_engine;
+extern struct fwd_engine flow_gen_engine;
extern struct fwd_engine rx_only_engine;
extern struct fwd_engine tx_only_engine;
extern struct fwd_engine csum_fwd_engine;
--
1.8.3.1
More information about the dev
mailing list