app/testpmd: make txonly mode generate multiple flows
Testpmd can generate multiple flows without taking much cost and this could be a simple traffic generator for developer's quick tests. If "--txonly-multi-flow" is specified in the command line, IP source address is varied to generate multiple flows. Signed-off-by: Yongseok Koh <yskoh@mellanox.com> Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
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@ -173,6 +173,7 @@ usage(char* progname)
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" Used mainly with PCAP drivers.\n");
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printf(" --txpkts=X[,Y]*: set TX segment sizes"
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" or total packet length.\n");
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printf(" --txonly-multi-flow: generate multiple flows in txonly mode\n");
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printf(" --disable-link-check: disable check on link status when "
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"starting/stopping ports.\n");
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printf(" --no-lsc-interrupt: disable link status change interrupt.\n");
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@ -632,6 +633,7 @@ launch_args_parse(int argc, char** argv)
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{ "no-flush-rx", 0, 0, 0 },
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{ "flow-isolate-all", 0, 0, 0 },
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{ "txpkts", 1, 0, 0 },
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{ "txonly-multi-flow", 0, 0, 0 },
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{ "disable-link-check", 0, 0, 0 },
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{ "no-lsc-interrupt", 0, 0, 0 },
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{ "no-rmv-interrupt", 0, 0, 0 },
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@ -1141,6 +1143,8 @@ launch_args_parse(int argc, char** argv)
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else
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rte_exit(EXIT_FAILURE, "bad txpkts\n");
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}
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if (!strcmp(lgopts[opt_idx].name, "txonly-multi-flow"))
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txonly_multi_flow = 1;
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if (!strcmp(lgopts[opt_idx].name, "no-flush-rx"))
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no_flush_rx = 1;
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if (!strcmp(lgopts[opt_idx].name, "disable-link-check"))
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@ -217,6 +217,9 @@ uint8_t tx_pkt_nb_segs = 1; /**< Number of segments in TXONLY packets */
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enum tx_pkt_split tx_pkt_split = TX_PKT_SPLIT_OFF;
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/**< Split policy for packets to TX. */
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uint8_t txonly_multi_flow;
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/**< Whether multiple flows are generated in TXONLY mode. */
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uint16_t nb_pkt_per_burst = DEF_PKT_BURST; /**< Number of packets per burst. */
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uint16_t mb_mempool_cache = DEF_MBUF_CACHE; /**< Size of mbuf mempool cache. */
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@ -432,6 +432,8 @@ enum tx_pkt_split {
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extern enum tx_pkt_split tx_pkt_split;
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extern uint8_t txonly_multi_flow;
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extern uint16_t nb_pkt_per_burst;
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extern uint16_t mb_mempool_cache;
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extern int8_t rx_pthresh;
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@ -52,6 +52,7 @@
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#define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
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static struct ipv4_hdr pkt_ip_hdr; /**< IP header of transmitted packets. */
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RTE_DEFINE_PER_LCORE(uint8_t, _ip_var); /**< IP address variation */
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static struct udp_hdr pkt_udp_hdr; /**< UDP header of transmitted packets. */
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static void
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@ -164,6 +165,7 @@ pkt_burst_transmit(struct fwd_stream *fs)
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uint16_t vlan_tci, vlan_tci_outer;
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uint32_t retry;
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uint64_t ol_flags = 0;
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uint8_t ip_var = RTE_PER_LCORE(_ip_var);
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uint8_t i;
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uint64_t tx_offloads;
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#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
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@ -237,6 +239,23 @@ pkt_burst_transmit(struct fwd_stream *fs)
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copy_buf_to_pkt(ð_hdr, sizeof(eth_hdr), pkt, 0);
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copy_buf_to_pkt(&pkt_ip_hdr, sizeof(pkt_ip_hdr), pkt,
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sizeof(struct ether_hdr));
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if (txonly_multi_flow) {
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struct ipv4_hdr *ip_hdr;
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uint32_t addr;
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ip_hdr = rte_pktmbuf_mtod_offset(pkt,
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struct ipv4_hdr *,
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sizeof(struct ether_hdr));
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/*
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* Generate multiple flows by varying IP src addr. This
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* enables packets are well distributed by RSS in
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* receiver side if any and txonly mode can be a decent
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* packet generator for developer's quick performance
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* regression test.
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*/
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addr = (IP_DST_ADDR | (ip_var++ << 8)) + rte_lcore_id();
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ip_hdr->src_addr = rte_cpu_to_be_32(addr);
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}
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copy_buf_to_pkt(&pkt_udp_hdr, sizeof(pkt_udp_hdr), pkt,
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sizeof(struct ether_hdr) +
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sizeof(struct ipv4_hdr));
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@ -268,6 +287,9 @@ pkt_burst_transmit(struct fwd_stream *fs)
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}
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fs->tx_packets += nb_tx;
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if (txonly_multi_flow)
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RTE_PER_LCORE(_ip_var) += 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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@ -324,6 +324,10 @@ The commandline options are:
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Set TX segment sizes or total packet length. Valid for ``tx-only``
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and ``flowgen`` forwarding modes.
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* ``--txonly-multi-flow``
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Generate multiple flows in txonly mode.
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* ``--disable-link-check``
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Disable check on link status when starting/stopping ports.
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