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From: "Peng, Yuan" <yuan.peng@intel.com>
To: "Dai, Wei" <wei.dai@intel.com>, "Ananyev, Konstantin"
<konstantin.ananyev@intel.com>, "Lu, Wenzhuo" <wenzhuo.lu@intel.com>, "Xing,
Beilei" <beilei.xing@intel.com>
CC: "dev@dpdk.org" <dev@dpdk.org>, "stable@dpdk.org" <stable@dpdk.org>
Thread-Topic: [PATCH v5 2/2] app/testpmd: fix invalid txq number setting
Thread-Index: AQHTi38RgXXEzEUYOUWj74nJQyPMxaNv8/Fw
Date: Fri, 12 Jan 2018 09:12:33 +0000
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Subject: Re: [dpdk-dev] [PATCH v5 2/2] app/testpmd: fix invalid txq number
setting
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Tested-by: Peng Yuan<yuan.peng@intel.com>
- Tested Branch: master
- Tested commit 6c7001480ac6356ff0a4995f3ed495ed9c866061
- OS: 4.5.5-300.fc24.x86_64
- GCC: gcc version 5.3.1 20151207 (Red Hat 5.3.1-2) (GCC)
- CPU: Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz
- NIC: Intel Corporation Device Fortville [8086:1572]
- Default x86_64-native-linuxapp-gcc configuration
- Prerequisites:
- Total 1 cases, 1 passed, 0 failed
- Case:=20
./usertools/dpdk-devbind.py -b igb_uio 05:00:0 echo 1 >/sys/bus/pci/device=
s/0000:05:00.0/max_vfs
./usertools/dpdk-devbind.py -b vfio-pci 05:02.0
pf:
./x86_64-native-linuxapp-gcc/app/testpmd -c f -n 4 -w 05:00.0,queue-num-pe=
r-vf=3D4 --file-prefix=3Dtest1 --socket-mem 1024,1024 - -I
vf:
./x86_64-native-linuxapp-gcc/app/testpmd -c f -n 4 -w 05:02.0 --file-prefi=
x=3Dtest2 --socket-mem 1024,1024 - -i --rxq=3D4 --txq=3D4
EAL: Detected 88 lcore(s)
EAL: Probing VFIO support...
EAL: VFIO support initialized
EAL: PCI device 0000:05:02.0 on NUMA socket 0
EAL: probe driver: 8086:154c net_i40e_vf
EAL: using IOMMU type 1 (Type 1)
Interactive-mode selected
USER1: create a new mbuf pool <mbuf_pool_socket_0>: n=3D171456, size=3D217=
6, socket=3D0
USER1: create a new mbuf pool <mbuf_pool_socket_1>: n=3D171456, size=3D217=
6, socket=3D1 Configuring Port 0 (socket 0) Port 0: 7E:AC:58:44:3C:94 Ch=
ecking link statuses...
Done
testpmd> port stop all
Stopping ports...
Checking link statuses...
Done
testpmd> port config all txq 5
Fail: input txq (5) can't be greater than max_tx_queues (4) of port 0 tes=
tpmd> port config all rxq 5
Fail: input rxq (5) can't be greater than max_rx_queues (4) of port 0 tes=
tpmd> port start all Port 0: 5A:19:E4:5C:A3:C7 Checking link statuses...
Done
testpmd> show port info all
Current number of RX queues: 4
Max possible RX queues: 4
Current number of TX queues: 4
Max possible TX queues: 4
there is no core dump, and the actual queue number doesn't change.
The case passed.
-----Original Message-----
From: Dai, Wei=20
Sent: Friday, January 12, 2018 4:10 PM
To: Peng, Yuan <yuan.peng@intel.com>; Ananyev, Konstantin <konstantin.anany=
ev@intel.com>; Lu, Wenzhuo <wenzhuo.lu@intel.com>; Xing, Beilei <beilei.xin=
g@intel.com>
Cc: dev@dpdk.org; Dai, Wei <wei.dai@intel.com>; stable@dpdk.org
Subject: [PATCH v5 2/2] app/testpmd: fix invalid txq number setting
If an invalid number of TX queues is configured from testpmd run-time comma=
nd like "port config all txq number" or from --txq in the command to start =
testpmd, the global variable nb_txq is updated by this invalid value withou=
t this patch. It may cause testpmd crash. This patch refuses invalid txq se=
tting and keeps its last correct value.
Fixes: ce8d561418d4 ("app/testpmd: add port configuration settings")
Cc: stable@dpdk.org
Signed-off-by: Wei Dai <wei.dai@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
---
app/test-pmd/cmdline.c | 2 ++
app/test-pmd/parameters.c | 6 +++---
app/test-pmd/testpmd.c | 46 +++++++++++++++++++++++++++++++++++++++++++=
+++
app/test-pmd/testpmd.h | 2 ++
4 files changed, 53 insertions(+), 3 deletions(-)
diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c index f0623b1.=
.6619cb8 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -1527,6 +1527,8 @@ cmd_config_rx_tx_parsed(void *parsed_result,
printf("Warning: Either rx or tx queues should be non zero\n");
return;
}
+ if (check_nb_txq(res->value) !=3D 0)
+ return;
nb_txq =3D res->value;
}
else if (!strcmp(res->name, "rxd")) {
diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c index c4=
6e734..ca2af65 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -932,12 +932,12 @@ launch_args_parse(int argc, char** argv)
}
if (!strcmp(lgopts[opt_idx].name, "txq")) {
n =3D atoi(optarg);
- if (n >=3D 0 && n <=3D (int) MAX_QUEUE_ID)
+ if (n >=3D 0 && check_nb_txq((queueid_t)n) =3D=3D 0)
nb_txq =3D (queueid_t) n;
else
rte_exit(EXIT_FAILURE, "txq %d invalid - must be"
- " >=3D 0 && <=3D %d\n", n,
- (int) MAX_QUEUE_ID);
+ " >=3D 0 && <=3D %u\n", n,
+ get_allowed_max_nb_txq(&pid));
}
if (!nb_rxq && !nb_txq) {
rte_exit(EXIT_FAILURE, "Either rx or tx queues should "
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c index 4e8667d.=
.493e028 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -586,6 +586,52 @@ check_nb_rxq(queueid_t rxq)
return 0;
}
=20
+/*
+ * Get the allowed maximum number of TX queues.
+ * *pid return the port id which has minimal value of
+ * max_tx_queues in all ports.
+ */
+queueid_t
+get_allowed_max_nb_txq(portid_t *pid)
+{
+ queueid_t allowed_max_txq =3D MAX_QUEUE_ID;
+ portid_t pi;
+ struct rte_eth_dev_info dev_info;
+
+ RTE_ETH_FOREACH_DEV(pi) {
+ rte_eth_dev_info_get(pi, &dev_info);
+ if (dev_info.max_tx_queues < allowed_max_txq) {
+ allowed_max_txq =3D dev_info.max_tx_queues;
+ *pid =3D pi;
+ }
+ }
+ return allowed_max_txq;
+}
+
+/*
+ * Check input txq is valid or not.
+ * If input txq is not greater than any of maximum number
+ * of TX queues of all ports, it is valid.
+ * if valid, return 0, else return -1
+ */
+int
+check_nb_txq(queueid_t txq)
+{
+ queueid_t allowed_max_txq;
+ portid_t pid =3D 0;
+
+ allowed_max_txq =3D get_allowed_max_nb_txq(&pid);
+ if (txq > allowed_max_txq) {
+ printf("Fail: input txq (%u) can't be greater "
+ "than max_tx_queues (%u) of port %u\n",
+ txq,
+ allowed_max_txq,
+ pid);
+ return -1;
+ }
+ return 0;
+}
+
static void
init_config(void)
{
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h index e815509.=
.fe40892 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -702,6 +702,8 @@ int new_socket_id(unsigned int socket_id);
=20
queueid_t get_allowed_max_nb_rxq(portid_t *pid); int check_nb_rxq(queueid=
_t rxq);
+queueid_t get_allowed_max_nb_txq(portid_t *pid); int=20
+check_nb_txq(queueid_t txq);
=20
/*
* Work-around of a compilation error with ICC on invocations of the
--
2.7.5