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app/testpmd: make txonly mode generate multiple flows

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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>
This commit is contained in:
Yongseok Koh 2019-03-28 11:46:28 -07:00 committed by Ferruh Yigit
parent 0c85cab92f
commit 82010ef55e
5 changed files with 35 additions and 0 deletions
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4
app/test-pmd/parameters.c
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@ -173,6 +173,7 @@ usage(char* progname)
" Used mainly with PCAP drivers.\n");
printf(" --txpkts=X[,Y]*: set TX segment sizes"
" or total packet length.\n");
printf(" --txonly-multi-flow: generate multiple flows in txonly mode\n");
printf(" --disable-link-check: disable check on link status when "
"starting/stopping ports.\n");
printf(" --no-lsc-interrupt: disable link status change interrupt.\n");
@ -632,6 +633,7 @@ launch_args_parse(int argc, char** argv)
{ "no-flush-rx", 0, 0, 0 },
{ "flow-isolate-all", 0, 0, 0 },
{ "txpkts", 1, 0, 0 },
{ "txonly-multi-flow", 0, 0, 0 },
{ "disable-link-check", 0, 0, 0 },
{ "no-lsc-interrupt", 0, 0, 0 },
{ "no-rmv-interrupt", 0, 0, 0 },
@ -1141,6 +1143,8 @@ launch_args_parse(int argc, char** argv)
else
rte_exit(EXIT_FAILURE, "bad txpkts\n");
}
if (!strcmp(lgopts[opt_idx].name, "txonly-multi-flow"))
txonly_multi_flow = 1;
if (!strcmp(lgopts[opt_idx].name, "no-flush-rx"))
no_flush_rx = 1;
if (!strcmp(lgopts[opt_idx].name, "disable-link-check"))

3
app/test-pmd/testpmd.c
View File

@ -217,6 +217,9 @@ uint8_t tx_pkt_nb_segs = 1; /**< Number of segments in TXONLY packets */
enum tx_pkt_split tx_pkt_split = TX_PKT_SPLIT_OFF;
/**< Split policy for packets to TX. */
uint8_t txonly_multi_flow;
/**< Whether multiple flows are generated in TXONLY mode. */
uint16_t nb_pkt_per_burst = DEF_PKT_BURST; /**< Number of packets per burst. */
uint16_t mb_mempool_cache = DEF_MBUF_CACHE; /**< Size of mbuf mempool cache. */

2
app/test-pmd/testpmd.h
View File

@ -432,6 +432,8 @@ enum tx_pkt_split {
extern enum tx_pkt_split tx_pkt_split;
extern uint8_t txonly_multi_flow;
extern uint16_t nb_pkt_per_burst;
extern uint16_t mb_mempool_cache;
extern int8_t rx_pthresh;

22
app/test-pmd/txonly.c
View File

@ -52,6 +52,7 @@
#define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
static struct ipv4_hdr pkt_ip_hdr; /**< IP header of transmitted packets. */
RTE_DEFINE_PER_LCORE(uint8_t, _ip_var); /**< IP address variation */
static struct udp_hdr pkt_udp_hdr; /**< UDP header of transmitted packets. */
static void
@ -164,6 +165,7 @@ pkt_burst_transmit(struct fwd_stream *fs)
uint16_t vlan_tci, vlan_tci_outer;
uint32_t retry;
uint64_t ol_flags = 0;
uint8_t ip_var = RTE_PER_LCORE(_ip_var);
uint8_t i;
uint64_t tx_offloads;
#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
@ -237,6 +239,23 @@ pkt_burst_transmit(struct fwd_stream *fs)
copy_buf_to_pkt(&eth_hdr, sizeof(eth_hdr), pkt, 0);
copy_buf_to_pkt(&pkt_ip_hdr, sizeof(pkt_ip_hdr), pkt,
sizeof(struct ether_hdr));
if (txonly_multi_flow) {
struct ipv4_hdr *ip_hdr;
uint32_t addr;
ip_hdr = rte_pktmbuf_mtod_offset(pkt,
struct ipv4_hdr *,
sizeof(struct ether_hdr));
/*
* Generate multiple flows by varying IP src addr. This
* enables packets are well distributed by RSS in
* receiver side if any and txonly mode can be a decent
* packet generator for developer's quick performance
* regression test.
*/
addr = (IP_DST_ADDR | (ip_var++ << 8)) + rte_lcore_id();
ip_hdr->src_addr = rte_cpu_to_be_32(addr);
}
copy_buf_to_pkt(&pkt_udp_hdr, sizeof(pkt_udp_hdr), pkt,
sizeof(struct ether_hdr) +
sizeof(struct ipv4_hdr));
@ -268,6 +287,9 @@ pkt_burst_transmit(struct fwd_stream *fs)
}
fs->tx_packets += nb_tx;
if (txonly_multi_flow)
RTE_PER_LCORE(_ip_var) += nb_tx;
#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;
#endif

4
doc/guides/testpmd_app_ug/run_app.rst
View File

@ -324,6 +324,10 @@ The commandline options are:
Set TX segment sizes or total packet length. Valid for ``tx-only``
and ``flowgen`` forwarding modes.
* ``--txonly-multi-flow``
Generate multiple flows in txonly mode.
* ``--disable-link-check``
Disable check on link status when starting/stopping ports.