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app/testpmd: support forced ethernet speed

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Add support for forced ethernet speed setting.
Currently testpmd tries to configure the Ethernet port in autoneg mode.
It is not possible to set the Ethernet port to a specific speed while
starting testpmd. In some cases capability to configure a forced speed
for the Ethernet port during initialization may be necessary. This patch
tries to add this support.

The patch assumes full duplex setting and does not attempt to change that.
So speeds like 10M, 100M are not configurable using this method.

The command line to configure a forced speed of 10G:
dpdk-testpmd -c 0xff  -- -i  --eth-link-speed  10000

The command line to configure a forced speed of 50G:
dpdk-testpmd -c 0xff  -- -i  --eth-link-speed  50000

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
This commit is contained in:
Ajit Khaparde 2021-03-05 11:42:32 -08:00 committed by Ferruh Yigit
parent 27088cb98e
commit b7b78a089c
5 changed files with 70 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
app/test-pmd/parameters.c
View File

@ -184,6 +184,7 @@ usage(char* progname)
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(" --eth-link-speed: force link speed.\n");
printf(" --disable-link-check: disable check on link status when "
"starting/stopping ports.\n");
printf(" --disable-device-start: do not automatically start port\n");
@ -485,6 +486,43 @@ parse_event_printing_config(const char *optarg, int enable)
return 0;
}
static int
parse_link_speed(int n)
{
uint32_t speed = ETH_LINK_SPEED_FIXED;
switch (n) {
case 1000:
speed |= ETH_LINK_SPEED_1G;
break;
case 10000:
speed |= ETH_LINK_SPEED_10G;
break;
case 25000:
speed |= ETH_LINK_SPEED_25G;
break;
case 40000:
speed |= ETH_LINK_SPEED_40G;
break;
case 50000:
speed |= ETH_LINK_SPEED_50G;
break;
case 100000:
speed |= ETH_LINK_SPEED_100G;
break;
case 200000:
speed |= ETH_LINK_SPEED_200G;
break;
case 100:
case 10:
default:
printf("Unsupported fixed speed\n");
return 0;
}
return speed;
}
void
launch_args_parse(int argc, char** argv)
{
@ -579,6 +617,7 @@ launch_args_parse(int argc, char** argv)
{ "rxpkts", 1, 0, 0 },
{ "txpkts", 1, 0, 0 },
{ "txonly-multi-flow", 0, 0, 0 },
{ "eth-link-speed", 1, 0, 0 },
{ "disable-link-check", 0, 0, 0 },
{ "disable-device-start", 0, 0, 0 },
{ "no-lsc-interrupt", 0, 0, 0 },
@ -1232,6 +1271,11 @@ launch_args_parse(int argc, char** argv)
txonly_multi_flow = 1;
if (!strcmp(lgopts[opt_idx].name, "no-flush-rx"))
no_flush_rx = 1;
if (!strcmp(lgopts[opt_idx].name, "eth-link-speed")) {
n = atoi(optarg);
if (n >= 0 && parse_link_speed(n) > 0)
eth_link_speed = parse_link_speed(n);
}
if (!strcmp(lgopts[opt_idx].name, "disable-link-check"))
no_link_check = 1;
if (!strcmp(lgopts[opt_idx].name, "disable-device-start"))

8
app/test-pmd/testpmd.c
View File

@ -513,6 +513,11 @@ uint8_t gro_flush_cycles = GRO_DEFAULT_FLUSH_CYCLES;
*/
enum rte_eth_rx_mq_mode rx_mq_mode = ETH_MQ_RX_VMDQ_DCB_RSS;
/*
* Used to set forced link speed
*/
uint32_t eth_link_speed;
/* Forward function declarations */
static void setup_attached_port(portid_t pi);
static void check_all_ports_link_status(uint32_t port_mask);
@ -1484,6 +1489,9 @@ init_config(void)
port->tx_conf[k].offloads =
port->dev_conf.txmode.offloads;
if (eth_link_speed)
port->dev_conf.link_speeds = eth_link_speed;
/* set flag to initialize port/queue */
port->need_reconfig = 1;
port->need_reconfig_queues = 1;

1
app/test-pmd/testpmd.h
View File

@ -342,6 +342,7 @@ extern uint8_t no_flush_rx; /**<set by "--no-flush-rx" parameter */
extern uint8_t flow_isolate_all; /**< set by "--flow-isolate-all */
extern uint8_t mp_alloc_type;
/**< set by "--mp-anon" or "--mp-alloc" parameter */
extern uint32_t eth_link_speed;
extern uint8_t no_link_check; /**<set by "--disable-link-check" parameter */
extern uint8_t no_device_start; /**<set by "--disable-device-start" parameter */
extern volatile int test_done; /* stop packet forwarding when set to 1. */

2
doc/guides/rel_notes/release_21_05.rst
View File

@ -78,6 +78,8 @@ New Features
* **Updated testpmd.**
* Added a command line option to configure forced speed for Ethernet port.
``dpdk-testpmd -- --eth-link-speed N``
* Added command to display Rx queue used descriptor count.
``show port (port_id) rxq (queue_id) desc used count``

15
doc/guides/testpmd_app_ug/run_app.rst
View File

@ -392,6 +392,21 @@ The command line options are:
Generate multiple flows in txonly mode.
* ``--eth-link-speed``
Set a forced link speed to the ethernet port::
10 - 10Mbps (not supported)
100 - 100Mbps (not supported)
1000 - 1Gbps
10000 - 10Gbps
25000 - 25Gbps
40000 - 40Gbps
50000 - 50Gbps
100000 - 100Gbps
200000 - 200Gbps
...
* ``--disable-link-check``
Disable check on link status when starting/stopping ports.