From: Lijun Ou <ouli...@huawei.com>
This patch adds multi-process support for testpmd.
The test cmd example as follows:
the primary cmd:
./dpdk-testpmd -a xxx --proc-type=auto -l 0-1 -- -i \
--rxq=4 --txq=4 --num-procs=2 --proc-id=0
the secondary cmd:
./dpdk-testpmd -a xxx --proc-type=auto -l 2-3 -- -i \
--rxq=4 --txq=4 --num-procs=2 --proc-id=1
Signed-off-by: Min Hu (Connor) <humi...@huawei.com>
Signed-off-by: Lijun Ou <ouli...@huawei.com>
---
v8:
* Added warning info about queue numbers and process numbers.
v7:
* Fixed compiling error for unexpected unindent.
v6:
* Add rte flow description for multiple process.
v5:
* Fixed run_app.rst for multiple process description.
* Fix compiling error.
v4:
* Fixed minimum vlaue of Rxq or Txq in doc.
v3:
* Fixed compiling error using gcc10.0.
v2:
* Added document for this patch.
---
app/test-pmd/cmdline.c | 12 +++-
app/test-pmd/config.c | 14 +++-
app/test-pmd/parameters.c | 11 +++
app/test-pmd/testpmd.c | 127 ++++++++++++++++++++++------------
app/test-pmd/testpmd.h | 7 ++
doc/guides/testpmd_app_ug/run_app.rst | 101 +++++++++++++++++++++++++++
6 files changed, 226 insertions(+), 46 deletions(-)
diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index f44116b..38c97e3 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -71,8 +71,6 @@
#include "cmdline_tm.h"
#include "bpf_cmd.h"
-static struct cmdline *testpmd_cl;
-
static void cmd_reconfig_device_queue(portid_t id, uint8_t dev, uint8_t queue);
/* *** Help command with introduction. *** */
@@ -5351,6 +5349,12 @@ cmd_set_flush_rx_parsed(void *parsed_result,
__rte_unused void *data)
{
struct cmd_set_flush_rx *res = parsed_result;
+
+ if (num_procs > 1 && (strcmp(res->mode, "on") == 0)) {
+ printf("multi-process doesn't support to flush rx queues.\n");
+ return;
+ }
+
no_flush_rx = (uint8_t)((strcmp(res->mode, "on") == 0) ? 0 : 1);
}
@@ -17229,6 +17233,10 @@ prompt(void)
printf("Cannot set exit function for cmdline\n");
cmdline_interact(testpmd_cl);
+ if (unlikely(f_quit == 1)) {
+ dup2(testpmd_fd_copy, testpmd_cl->s_in);
+ close(testpmd_fd_copy);
+ }
if (ret != 0)
cmdline_stdin_exit(testpmd_cl);
}
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index ef0b978..ec7d030 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -2827,6 +2827,8 @@ rss_fwd_config_setup(void)
queueid_t rxq;
queueid_t nb_q;
streamid_t sm_id;
+ int start;
+ int end;
nb_q = nb_rxq;
if (nb_q > nb_txq)
@@ -2844,7 +2846,15 @@ rss_fwd_config_setup(void)
init_fwd_streams();
setup_fwd_config_of_each_lcore(&cur_fwd_config);
- rxp = 0; rxq = 0;
+
+ if (proc_id > 0 && nb_q % num_procs)
+ printf("Warning! queue numbers should be multiple of "
+ "processes, or packet loss will happen.\n");
+
+ start = proc_id * nb_q / num_procs;
+ end = start + nb_q / num_procs;
+ rxp = 0;
+ rxq = start;
for (sm_id = 0; sm_id < cur_fwd_config.nb_fwd_streams; sm_id++) {
struct fwd_stream *fs;
@@ -2861,6 +2871,8 @@ rss_fwd_config_setup(void)
continue;
rxp = 0;
rxq++;
+ if (rxq >= end)
+ rxq = start;
}
}
diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
index a326c8c..ec3bc62 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -45,6 +45,8 @@
#include <rte_flow.h>
#include "testpmd.h"
+#define PARAM_PROC_ID "proc-id"
+#define PARAM_NUM_PROCS "num-procs"
static void
usage(char* progname)
@@ -644,6 +646,8 @@ launch_args_parse(int argc, char** argv)
{ "rx-mq-mode", 1, 0, 0 },
{ "record-core-cycles", 0, 0, 0 },
{ "record-burst-stats", 0, 0, 0 },
+ { PARAM_NUM_PROCS, 1, 0, 0 },
+ { PARAM_PROC_ID, 1, 0, 0 },
{ 0, 0, 0, 0 },
};
@@ -1410,6 +1414,13 @@ launch_args_parse(int argc, char** argv)
record_core_cycles = 1;
if (!strcmp(lgopts[opt_idx].name, "record-burst-stats"))
record_burst_stats = 1;
+
+ if (strncmp(lgopts[opt_idx].name,
+ PARAM_NUM_PROCS, 8) == 0)
+ num_procs = atoi(optarg);
+ if (strncmp(lgopts[opt_idx].name,
+ PARAM_PROC_ID, 7) == 0)
+ proc_id = atoi(optarg);
break;
case 'h':
usage(argv[0]);
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 96d2e0f..c31234e 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -63,6 +63,9 @@
#include "testpmd.h"
+int testpmd_fd_copy; /* the copy of STDIN_FILENO */
+struct cmdline *testpmd_cl;
+
#ifndef MAP_HUGETLB
/* FreeBSD may not have MAP_HUGETLB (in fact, it probably doesn't) */
#define HUGE_FLAG (0x40000)
@@ -125,6 +128,9 @@ uint8_t port_numa[RTE_MAX_ETHPORTS];
*/
uint8_t rxring_numa[RTE_MAX_ETHPORTS];
+int proc_id;
+unsigned int num_procs = 1;
+
/*
* Store specified sockets on which TX ring to be used by ports
* is allocated.
@@ -977,6 +983,11 @@ mbuf_pool_create(uint16_t mbuf_seg_size, unsigned nb_mbuf,
mb_size = sizeof(struct rte_mbuf) + mbuf_seg_size;
mbuf_poolname_build(socket_id, pool_name, sizeof(pool_name), size_idx);
+ if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
+ rte_mp = rte_mempool_lookup(pool_name);
+ goto err;
+ }
+
TESTPMD_LOG(INFO,
"create a new mbuf pool <%s>: n=%u, size=%u, socket=%u\n",
pool_name, nb_mbuf, mbuf_seg_size, socket_id);
@@ -1059,9 +1070,14 @@ mbuf_pool_create(uint16_t mbuf_seg_size, unsigned
nb_mbuf,
err:
if (rte_mp == NULL) {
- rte_exit(EXIT_FAILURE,
- "Creation of mbuf pool for socket %u failed: %s\n",
- socket_id, rte_strerror(rte_errno));
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+ rte_exit(EXIT_FAILURE,
+ "Creation of mbuf pool for socket %u failed:
%s\n",
+ socket_id, rte_strerror(rte_errno));
+ else
+ rte_exit(EXIT_FAILURE,
+ "Get mbuf pool for socket %u failed: %s\n",
+ socket_id, rte_strerror(rte_errno));
} else if (verbose_level > 0) {
rte_mempool_dump(stdout, rte_mp);
}
@@ -2002,6 +2018,12 @@ flush_fwd_rx_queues(void)
uint64_t prev_tsc = 0, diff_tsc, cur_tsc, timer_tsc = 0;
uint64_t timer_period;
+ if (num_procs > 1) {
+ printf("multi-process not support for flushing fwd rx "
+ "queues, skip the below lines and return.\n");
+ return;
+ }
+
/* convert to number of cycles */
timer_period = rte_get_timer_hz(); /* 1 second timeout */
@@ -2511,21 +2533,28 @@ start_port(portid_t pid)
return -1;
}
/* configure port */
- diag = rte_eth_dev_configure(pi, nb_rxq + nb_hairpinq,
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+ diag = rte_eth_dev_configure(pi,
+ nb_rxq + nb_hairpinq,
nb_txq + nb_hairpinq,
&(port->dev_conf));
- if (diag != 0) {
- if (rte_atomic16_cmpset(&(port->port_status),
- RTE_PORT_HANDLING, RTE_PORT_STOPPED) == 0)
- printf("Port %d can not be set back "
- "to stopped\n", pi);
- printf("Fail to configure port %d\n", pi);
- /* try to reconfigure port next time */
- port->need_reconfig = 1;
- return -1;
+ if (diag != 0) {
+ if (rte_atomic16_cmpset(
+ &(port->port_status),
+ RTE_PORT_HANDLING,
+ RTE_PORT_STOPPED) == 0)
+ printf("Port %d can not be set "
+ "back to stopped\n", pi);
+ printf("Fail to configure port %d\n",
+ pi);
+ /* try to reconfigure port next time */
+ port->need_reconfig = 1;
+ return -1;
+ }
}
}
- if (port->need_reconfig_queues > 0) {
+ if (port->need_reconfig_queues > 0 &&
+ rte_eal_process_type() == RTE_PROC_PRIMARY) {
port->need_reconfig_queues = 0;
/* setup tx queues */
for (qi = 0; qi < nb_txq; qi++) {
@@ -2626,17 +2655,20 @@ start_port(portid_t pid)
cnt_pi++;
/* start port */
- diag = rte_eth_dev_start(pi);
- if (diag < 0) {
- printf("Fail to start port %d: %s\n", pi,
- rte_strerror(-diag));
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+ diag = rte_eth_dev_start(pi);
+ if (diag < 0) {
+ printf("Fail to start port %d: %s\n", pi,
+ rte_strerror(-diag));
- /* Fail to setup rx queue, return */
- if (rte_atomic16_cmpset(&(port->port_status),
+ /* Fail to setup rx queue, return */
+ if (rte_atomic16_cmpset(&(port->port_status),
RTE_PORT_HANDLING, RTE_PORT_STOPPED) == 0)
- printf("Port %d can not be set back to "
- "stopped\n", pi);
- continue;
+ printf("Port %d can not be set back to "
+ "stopped\n",
+ pi);
+ continue;
+ }
}
if (rte_atomic16_cmpset(&(port->port_status),
@@ -2765,7 +2797,8 @@ stop_port(portid_t pid)
if (port->flow_list)
port_flow_flush(pi);
- if (rte_eth_dev_stop(pi) != 0)
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY &&
+ rte_eth_dev_stop(pi) != 0)
RTE_LOG(ERR, EAL, "rte_eth_dev_stop failed for port
%u\n",
pi);
@@ -2834,8 +2867,10 @@ close_port(portid_t pid)
continue;
}
- port_flow_flush(pi);
- rte_eth_dev_close(pi);
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+ port_flow_flush(pi);
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+ rte_eth_dev_close(pi);
}
remove_invalid_ports();
@@ -3099,7 +3134,7 @@ pmd_test_exit(void)
}
}
for (i = 0 ; i < RTE_DIM(mempools) ; i++) {
- if (mempools[i])
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY && mempools[i])
rte_mempool_free(mempools[i]);
}
@@ -3621,6 +3656,10 @@ init_port_dcb_config(portid_t pid,
int retval;
uint16_t i;
+ if (num_procs > 1) {
+ printf("The multi-process feature doesn't support dcb.\n");
+ return -ENOTSUP;
+ }
rte_port = &ports[pid];
memset(&port_conf, 0, sizeof(struct rte_eth_conf));
@@ -3719,13 +3758,6 @@ init_port(void)
}
static void
-force_quit(void)
-{
- pmd_test_exit();
- prompt_exit();
-}
-
-static void
print_stats(void)
{
uint8_t i;
@@ -3756,12 +3788,16 @@ signal_handler(int signum)
if (latencystats_enabled != 0)
rte_latencystats_uninit();
#endif
- force_quit();
/* Set flag to indicate the force termination. */
f_quit = 1;
- /* exit with the expected status */
- signal(signum, SIG_DFL);
- kill(getpid(), signum);
+ if (interactive == 1) {
+ dup2(testpmd_cl->s_in, testpmd_fd_copy);
+ close(testpmd_cl->s_in);
+ } else {
+ dup2(0, testpmd_fd_copy);
+ close(0);
+ }
+
}
}
@@ -3786,10 +3822,6 @@ main(int argc, char** argv)
rte_exit(EXIT_FAILURE, "Cannot init EAL: %s\n",
rte_strerror(rte_errno));
- if (rte_eal_process_type() == RTE_PROC_SECONDARY)
- rte_exit(EXIT_FAILURE,
- "Secondary process type not supported.\n");
-
ret = register_eth_event_callback();
if (ret != 0)
rte_exit(EXIT_FAILURE, "Cannot register for ethdev events");
@@ -3885,8 +3917,10 @@ main(int argc, char** argv)
}
}
- if (!no_device_start && start_port(RTE_PORT_ALL) != 0)
+ if (!no_device_start && start_port(RTE_PORT_ALL) != 0) {
+ pmd_test_exit();
rte_exit(EXIT_FAILURE, "Start ports failed\n");
+ }
/* set all ports to promiscuous mode by default */
RTE_ETH_FOREACH_DEV(port_id) {
@@ -3932,6 +3966,8 @@ main(int argc, char** argv)
}
prompt();
pmd_test_exit();
+ if (unlikely(f_quit == 1))
+ prompt_exit();
} else
#endif
{
@@ -3967,6 +4003,11 @@ main(int argc, char** argv)
printf("Press enter to exit\n");
rc = read(0, &c, 1);
pmd_test_exit();
+ if (unlikely(f_quit == 1)) {
+ dup2(testpmd_fd_copy, 0);
+ close(testpmd_fd_copy);
+ prompt_exit();
+ }
if (rc < 0)
return 1;
}
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index a87ccb0..640a377 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -13,6 +13,7 @@
#include <rte_gso.h>
#include <cmdline.h>
#include <sys/queue.h>
+#include "cmdline.h"
#define RTE_PORT_ALL (~(portid_t)0x0)
@@ -24,6 +25,10 @@
#define RTE_PORT_CLOSED (uint16_t)2
#define RTE_PORT_HANDLING (uint16_t)3
+extern uint8_t f_quit;
+extern int testpmd_fd_copy;
+extern struct cmdline *testpmd_cl;
+
/*
* It is used to allocate the memory for hash key.
* The hash key size is NIC dependent.
@@ -423,6 +428,8 @@ extern uint64_t noisy_lkup_mem_sz;
extern uint64_t noisy_lkup_num_writes;
extern uint64_t noisy_lkup_num_reads;
extern uint64_t noisy_lkup_num_reads_writes;
+extern int proc_id;
+extern unsigned int num_procs;
extern uint8_t dcb_config;
extern uint8_t dcb_test;
diff --git a/doc/guides/testpmd_app_ug/run_app.rst
b/doc/guides/testpmd_app_ug/run_app.rst
index ec1dc7d..7e60e80 100644
--- a/doc/guides/testpmd_app_ug/run_app.rst
+++ b/doc/guides/testpmd_app_ug/run_app.rst
@@ -551,3 +551,104 @@ The command line options are:
bit 1 - two hairpin ports paired
bit 0 - two hairpin ports loop
The default value is 0. Hairpin will use single port mode and implicit Tx
flow mode.
+
+
+Testpmd Support Multi Process Command-line Options
+--------------------------------------------------
+
+The following are the command-line options for the testpmd applications(support
+multi process).They must be separated from the EAL options, shown in the
previous
+section, with a ``--`` separator:
+
+.. code-block:: console
+
+ primary process:
+ sudo ./dpdk-testpmd -a xxx --proc-type=auto -l 0-1 -- -i --rxq=4
--txq=4 \
+ --num-procs=2 --proc-id=0
+
+ secondary process:
+ sudo ./dpdk-testpmd -a xxx --proc-type=auto -l 2-3 -- -i --rxq=4
--txq=4 \
+ --num-procs=2 --proc-id=1
+
+The command line options are:
+
+* ``-a, --allow``
+
+ Add a device to the allow list. ``xxx`` means device used which should be
the
+ same in primary process and secondary process.
+
+* ``--proc-type``
+
+ Specify a given process instance as the primary or secondary DPDK instance.
+ ``auto`` set here is OK.
+
+* ``-l CORELIST``
+
+ List of cores to run on. the corelist should be different in primary
process and
+ secondary process.
+
+* ``--rxq=N``
+
+ Set the number of Rx queues per port to N. N is the sum of queues used by
primary
+ and secondary process. Primary process and secondary process should have
separate
+ queues, and each should occupy at least one queue. Where N should be the
multiple
+ of number of processes.
+
+* ``--txq=N``
+
+ Set the number of Tx queues per port to N. N is the sum of queues used by
primary
+ and secondary process. Primary process and secondary process should have
separate
+ queues, and each should occupy at least one queue. Where N should be the
multiple
+ of number of processes.
+
+* ``--num-procs=N``
+
+ The number of processes which will be used.
+
+* ``--proc-id=id``
+
+ The id of the current process (id < num-procs). id should be different in
primary
+ process and secondary process.
+
+Calculation rule for queue:
+All queues are allocated to different processes based on proc_num and proc_id.
+Calculation rule for the Testpmd to allocate queues to each process:
+start(queue start id) = proc_id * nb_q / num_procs；
+end(queue end id) = start + nb_q / num_procs；
+
+For example, if supports 4 txq and rxq
+the 0~1 for primary process
+the 2~3 for secondary process
+
+The number of rings should be a multiple of the number of processes. If not,
+redundant queues will exist after queues are allocated to processes. After RSS
is
+enabled, packet loss occurs when traffic is sent to all processes at the same
time.
+Some traffic enters redundant queues and cannot be forwarded.
+
+Most dev ops is supported in primary and secondary process. While secondary
process
+is not permitted to allocate or release shared memory, so some ops are not
supported
+as follows:
+``dev_configure``
+``dev_start``
+``dev_stop``
+``rx_queue_setup``
+``tx_queue_setup``
+``rx_queue_release``
+``tx_queue_release``
+
+So, any command from testpmd which calls those APIs will not be supported in
secondary
+process, like:
+``port config all rxq|txq|rxd|txd <value>``
+``port config <port_id> rx_offload xxx on/off ``
+``port config <port_id> tx_offload xxx on/off``
+etc.
+
+RTE_FLOW supported, it applies only on its own process on SW side, but all on
HW size.
+stats supported, stats will not change when one quit and start, As they share
the same
+buffer to store the stats. Flow rules are maintained in process level: primary
and secondary
+has its own flow list(but one flow list in HW). The two can see all the
queues, so setting
+the flow rules for the other is OK. Of course, io(receive or transmit packets)
in the queue
+from others is not permitted.
+
+RSS supported, Primary process and secondary process has separate queues to
use, RSS
+will work in their own queues whether primary and secondary process.
--
2.7.4
