* [dpdk-dev] [PATCH] ethdev: check for invalid device name
@ 2019-03-11 18:15 Stephen Hemminger
2019-03-13 12:52 ` Zhang, Qi Z
2019-03-14 7:23 ` Ali Alnubani
0 siblings, 2 replies; 7+ messages in thread
From: Stephen Hemminger @ 2019-03-11 18:15 UTC (permalink / raw)
To: dev; +Cc: Stephen Hemminger
Do not allow creating a ethernet device with a name over the
allowed maximum (or zero length). This is safer than silently truncating
which is what happens now.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
v1 - previously sent as RFC
lib/librte_ethdev/rte_ethdev.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 85c1794968dd..0b81980ff71c 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -439,6 +439,16 @@ rte_eth_dev_allocate(const char *name)
uint16_t port_id;
struct rte_eth_dev *eth_dev = NULL;
+ if (*name) {
+ RTE_ETHDEV_LOG(ERR, "Zero length Ethernet device name\n");
+ return NULL;
+ }
+
+ if (strnlen(name, RTE_ETH_NAME_MAX_LEN) >= RTE_ETH_NAME_MAX_LEN) {
+ RTE_ETHDEV_LOG(ERR, "Ethernet device name is too long\n");
+ return NULL;
+ }
+
rte_eth_dev_shared_data_prepare();
/* Synchronize port creation between primary and secondary threads. */
--
2.17.1
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [dpdk-dev] [PATCH] ethdev: check for invalid device name
2019-03-11 18:15 [dpdk-dev] [PATCH] ethdev: check for invalid device name Stephen Hemminger
@ 2019-03-13 12:52 ` Zhang, Qi Z
2019-03-13 17:32 ` Stephen Hemminger
2019-03-14 7:23 ` Ali Alnubani
1 sibling, 1 reply; 7+ messages in thread
From: Zhang, Qi Z @ 2019-03-13 12:52 UTC (permalink / raw)
To: Stephen Hemminger, dev
HI
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Stephen Hemminger
> Sent: Tuesday, March 12, 2019 2:16 AM
> To: dev@dpdk.org
> Cc: Stephen Hemminger <stephen@networkplumber.org>
> Subject: [dpdk-dev] [PATCH] ethdev: check for invalid device name
>
> Do not allow creating a ethernet device with a name over the allowed maximum
> (or zero length). This is safer than silently truncating which is what happens now.
>
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
> ---
> v1 - previously sent as RFC
>
> lib/librte_ethdev/rte_ethdev.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> index 85c1794968dd..0b81980ff71c 100644
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -439,6 +439,16 @@ rte_eth_dev_allocate(const char *name)
> uint16_t port_id;
> struct rte_eth_dev *eth_dev = NULL;
>
> + if (*name) {
Is above check same as "strlen(name) == 0"?
> + RTE_ETHDEV_LOG(ERR, "Zero length Ethernet device name\n");
> + return NULL;
> + }
> +
> + if (strnlen(name, RTE_ETH_NAME_MAX_LEN) >=
> RTE_ETH_NAME_MAX_LEN) {
> + RTE_ETHDEV_LOG(ERR, "Ethernet device name is too long\n");
> + return NULL;
> + }
> +
> rte_eth_dev_shared_data_prepare();
>
> /* Synchronize port creation between primary and secondary threads. */
> --
> 2.17.1
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [dpdk-dev] [PATCH] ethdev: check for invalid device name
2019-03-13 12:52 ` Zhang, Qi Z
@ 2019-03-13 17:32 ` Stephen Hemminger
2019-03-14 1:01 ` Zhang, Qi Z
0 siblings, 1 reply; 7+ messages in thread
From: Stephen Hemminger @ 2019-03-13 17:32 UTC (permalink / raw)
To: Zhang, Qi Z; +Cc: dev
On Wed, 13 Mar 2019 12:52:50 +0000
"Zhang, Qi Z" <qi.z.zhang@intel.com> wrote:
> HI
>
> > -----Original Message-----
> > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Stephen Hemminger
> > Sent: Tuesday, March 12, 2019 2:16 AM
> > To: dev@dpdk.org
> > Cc: Stephen Hemminger <stephen@networkplumber.org>
> > Subject: [dpdk-dev] [PATCH] ethdev: check for invalid device name
> >
> > Do not allow creating a ethernet device with a name over the allowed maximum
> > (or zero length). This is safer than silently truncating which is what happens now.
> >
> > Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> > Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
> > ---
> > v1 - previously sent as RFC
> >
> > lib/librte_ethdev/rte_ethdev.c | 10 ++++++++++
> > 1 file changed, 10 insertions(+)
> >
> > diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> > index 85c1794968dd..0b81980ff71c 100644
> > --- a/lib/librte_ethdev/rte_ethdev.c
> > +++ b/lib/librte_ethdev/rte_ethdev.c
> > @@ -439,6 +439,16 @@ rte_eth_dev_allocate(const char *name)
> > uint16_t port_id;
> > struct rte_eth_dev *eth_dev = NULL;
> >
> > + if (*name) {
>
> Is above check same as "strlen(name) == 0"?
Yes, but checking for first null byte is slightly quicker. Alternative would
be to call strnlen() once.
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [dpdk-dev] [PATCH] ethdev: check for invalid device name
2019-03-13 17:32 ` Stephen Hemminger
@ 2019-03-14 1:01 ` Zhang, Qi Z
2019-03-14 1:01 ` Zhang, Qi Z
0 siblings, 1 reply; 7+ messages in thread
From: Zhang, Qi Z @ 2019-03-14 1:01 UTC (permalink / raw)
To: Stephen Hemminger; +Cc: dev
> -----Original Message-----
> From: Stephen Hemminger [mailto:stephen@networkplumber.org]
> Sent: Thursday, March 14, 2019 1:33 AM
> To: Zhang, Qi Z <qi.z.zhang@intel.com>
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] ethdev: check for invalid device name
>
> On Wed, 13 Mar 2019 12:52:50 +0000
> "Zhang, Qi Z" <qi.z.zhang@intel.com> wrote:
>
> > HI
> >
> > > -----Original Message-----
> > > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Stephen
> > > Hemminger
> > > Sent: Tuesday, March 12, 2019 2:16 AM
> > > To: dev@dpdk.org
> > > Cc: Stephen Hemminger <stephen@networkplumber.org>
> > > Subject: [dpdk-dev] [PATCH] ethdev: check for invalid device name
> > >
> > > Do not allow creating a ethernet device with a name over the allowed
> > > maximum (or zero length). This is safer than silently truncating which is what
> happens now.
> > >
> > > Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> > > Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
> > > ---
> > > v1 - previously sent as RFC
> > >
> > > lib/librte_ethdev/rte_ethdev.c | 10 ++++++++++
> > > 1 file changed, 10 insertions(+)
> > >
> > > diff --git a/lib/librte_ethdev/rte_ethdev.c
> > > b/lib/librte_ethdev/rte_ethdev.c index 85c1794968dd..0b81980ff71c
> > > 100644
> > > --- a/lib/librte_ethdev/rte_ethdev.c
> > > +++ b/lib/librte_ethdev/rte_ethdev.c
> > > @@ -439,6 +439,16 @@ rte_eth_dev_allocate(const char *name)
> > > uint16_t port_id;
> > > struct rte_eth_dev *eth_dev = NULL;
> > >
> > > + if (*name) {
> >
> > Is above check same as "strlen(name) == 0"?
>
> Yes, but checking for first null byte is slightly quicker. Alternative would be to call
> strnlen() once.
But you are checking the not null byte here right? should it be if (!(*name))?
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [dpdk-dev] [PATCH] ethdev: check for invalid device name
2019-03-14 1:01 ` Zhang, Qi Z
@ 2019-03-14 1:01 ` Zhang, Qi Z
0 siblings, 0 replies; 7+ messages in thread
From: Zhang, Qi Z @ 2019-03-14 1:01 UTC (permalink / raw)
To: Stephen Hemminger; +Cc: dev
> -----Original Message-----
> From: Stephen Hemminger [mailto:stephen@networkplumber.org]
> Sent: Thursday, March 14, 2019 1:33 AM
> To: Zhang, Qi Z <qi.z.zhang@intel.com>
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] ethdev: check for invalid device name
>
> On Wed, 13 Mar 2019 12:52:50 +0000
> "Zhang, Qi Z" <qi.z.zhang@intel.com> wrote:
>
> > HI
> >
> > > -----Original Message-----
> > > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Stephen
> > > Hemminger
> > > Sent: Tuesday, March 12, 2019 2:16 AM
> > > To: dev@dpdk.org
> > > Cc: Stephen Hemminger <stephen@networkplumber.org>
> > > Subject: [dpdk-dev] [PATCH] ethdev: check for invalid device name
> > >
> > > Do not allow creating a ethernet device with a name over the allowed
> > > maximum (or zero length). This is safer than silently truncating which is what
> happens now.
> > >
> > > Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> > > Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
> > > ---
> > > v1 - previously sent as RFC
> > >
> > > lib/librte_ethdev/rte_ethdev.c | 10 ++++++++++
> > > 1 file changed, 10 insertions(+)
> > >
> > > diff --git a/lib/librte_ethdev/rte_ethdev.c
> > > b/lib/librte_ethdev/rte_ethdev.c index 85c1794968dd..0b81980ff71c
> > > 100644
> > > --- a/lib/librte_ethdev/rte_ethdev.c
> > > +++ b/lib/librte_ethdev/rte_ethdev.c
> > > @@ -439,6 +439,16 @@ rte_eth_dev_allocate(const char *name)
> > > uint16_t port_id;
> > > struct rte_eth_dev *eth_dev = NULL;
> > >
> > > + if (*name) {
> >
> > Is above check same as "strlen(name) == 0"?
>
> Yes, but checking for first null byte is slightly quicker. Alternative would be to call
> strnlen() once.
But you are checking the not null byte here right? should it be if (!(*name))?
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [dpdk-dev] [PATCH] ethdev: check for invalid device name
2019-03-11 18:15 [dpdk-dev] [PATCH] ethdev: check for invalid device name Stephen Hemminger
2019-03-13 12:52 ` Zhang, Qi Z
@ 2019-03-14 7:23 ` Ali Alnubani
2019-03-14 7:23 ` Ali Alnubani
1 sibling, 1 reply; 7+ messages in thread
From: Ali Alnubani @ 2019-03-14 7:23 UTC (permalink / raw)
To: Stephen Hemminger, dev; +Cc: Thomas Monjalon, Shahaf Shuler
Hi Stephen,
I see failures in performance tests caused by this patch:
http://mails.dpdk.org/archives/test-report/2019-March/076705.html
http://mails.dpdk.org/archives/test-report/2019-March/076704.html
After applying your patch, the devices will not be probed:
'''
Zero length Ethernet device name
net_mlx5: can not allocate rte ethdev
net_mlx5: probe of PCI device 0000:12:00.1 aborted after encountering an error: Cannot allocate memory
EAL: Requested device 0000:12:00.1 cannot be used
testpmd: No probed ethernet devices
'''
Testpmd command:
./x86_64-native-linuxapp-gcc/build/app/test-pmd/testpmd -c 0x3 -n 4 -w 12:00.0 -w 12:00.1 -- --txd=256 --rxd=256 -i
> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Stephen Hemminger
> Sent: Monday, March 11, 2019 8:16 PM
> To: dev@dpdk.org
> Cc: Stephen Hemminger <stephen@networkplumber.org>
> Subject: [dpdk-dev] [PATCH] ethdev: check for invalid device name
>
> Do not allow creating a ethernet device with a name over the allowed
> maximum (or zero length). This is safer than silently truncating which is what
> happens now.
>
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
> ---
> v1 - previously sent as RFC
>
> lib/librte_ethdev/rte_ethdev.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> index 85c1794968dd..0b81980ff71c 100644
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -439,6 +439,16 @@ rte_eth_dev_allocate(const char *name)
> uint16_t port_id;
> struct rte_eth_dev *eth_dev = NULL;
>
> + if (*name) {
> + RTE_ETHDEV_LOG(ERR, "Zero length Ethernet device
> name\n");
> + return NULL;
> + }
> +
> + if (strnlen(name, RTE_ETH_NAME_MAX_LEN) >=
> RTE_ETH_NAME_MAX_LEN) {
> + RTE_ETHDEV_LOG(ERR, "Ethernet device name is too
> long\n");
> + return NULL;
> + }
> +
> rte_eth_dev_shared_data_prepare();
>
> /* Synchronize port creation between primary and secondary
> threads. */
> --
> 2.17.1
Regards,
Ali
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [dpdk-dev] [PATCH] ethdev: check for invalid device name
2019-03-14 7:23 ` Ali Alnubani
@ 2019-03-14 7:23 ` Ali Alnubani
0 siblings, 0 replies; 7+ messages in thread
From: Ali Alnubani @ 2019-03-14 7:23 UTC (permalink / raw)
To: Stephen Hemminger, dev; +Cc: Thomas Monjalon, Shahaf Shuler
Hi Stephen,
I see failures in performance tests caused by this patch:
http://mails.dpdk.org/archives/test-report/2019-March/076705.html
http://mails.dpdk.org/archives/test-report/2019-March/076704.html
After applying your patch, the devices will not be probed:
'''
Zero length Ethernet device name
net_mlx5: can not allocate rte ethdev
net_mlx5: probe of PCI device 0000:12:00.1 aborted after encountering an error: Cannot allocate memory
EAL: Requested device 0000:12:00.1 cannot be used
testpmd: No probed ethernet devices
'''
Testpmd command:
./x86_64-native-linuxapp-gcc/build/app/test-pmd/testpmd -c 0x3 -n 4 -w 12:00.0 -w 12:00.1 -- --txd=256 --rxd=256 -i
> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Stephen Hemminger
> Sent: Monday, March 11, 2019 8:16 PM
> To: dev@dpdk.org
> Cc: Stephen Hemminger <stephen@networkplumber.org>
> Subject: [dpdk-dev] [PATCH] ethdev: check for invalid device name
>
> Do not allow creating a ethernet device with a name over the allowed
> maximum (or zero length). This is safer than silently truncating which is what
> happens now.
>
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
> ---
> v1 - previously sent as RFC
>
> lib/librte_ethdev/rte_ethdev.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> index 85c1794968dd..0b81980ff71c 100644
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -439,6 +439,16 @@ rte_eth_dev_allocate(const char *name)
> uint16_t port_id;
> struct rte_eth_dev *eth_dev = NULL;
>
> + if (*name) {
> + RTE_ETHDEV_LOG(ERR, "Zero length Ethernet device
> name\n");
> + return NULL;
> + }
> +
> + if (strnlen(name, RTE_ETH_NAME_MAX_LEN) >=
> RTE_ETH_NAME_MAX_LEN) {
> + RTE_ETHDEV_LOG(ERR, "Ethernet device name is too
> long\n");
> + return NULL;
> + }
> +
> rte_eth_dev_shared_data_prepare();
>
> /* Synchronize port creation between primary and secondary
> threads. */
> --
> 2.17.1
Regards,
Ali
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2019-03-14 7:23 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2019-03-11 18:15 [dpdk-dev] [PATCH] ethdev: check for invalid device name Stephen Hemminger
2019-03-13 12:52 ` Zhang, Qi Z
2019-03-13 17:32 ` Stephen Hemminger
2019-03-14 1:01 ` Zhang, Qi Z
2019-03-14 1:01 ` Zhang, Qi Z
2019-03-14 7:23 ` Ali Alnubani
2019-03-14 7:23 ` Ali Alnubani
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