[dpdk-dev] app/pdump: fix pdump can't find the driver when compiled dpdk to shared libraries
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Commit Message
When I compiled dpdk With configuration "CONFIG_RTE_BUILD_SHARED_LIB=y",
I get error message "EAL: no driver found for net_pcap_rx_0" and
"EAL: Driver cannot attach the device (net_pcap_rx_0)" by running pdump.
So I add library librte_pmd_pcap.so.
Signed-off-by: zhaozhanxu <zhaozhanxu@163.com>
---
app/pdump/Makefile | 4 ++++
1 file changed, 4 insertions(+)
Comments
2017-03-03 17:27, zhaozhanxu:
> When I compiled dpdk With configuration "CONFIG_RTE_BUILD_SHARED_LIB=y",
> I get error message "EAL: no driver found for net_pcap_rx_0" and
> "EAL: Driver cannot attach the device (net_pcap_rx_0)" by running pdump.
> So I add library librte_pmd_pcap.so.
[...]
> +ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
> + _LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP) += -lrte_pmd_pcap
> +endif
The idea of having drivers as shared libraries is to use them as plugins.
We are not going to link the applications with every drivers.
Instead we load them explicitly with -d option.
Someone should document it in
http://dpdk.org/doc/guides/linux_gsg/build_sample_apps.html#running-a-sample-application
Any volunteer?
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Thomas Monjalon
> Sent: Friday, March 10, 2017 12:56 PM
> To: zhaozhanxu <zhaozhanxu@163.com>
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] app/pdump: fix pdump can't find the driver
> when compiled dpdk to shared libraries
>
> 2017-03-03 17:27, zhaozhanxu:
> > When I compiled dpdk With configuration
> > "CONFIG_RTE_BUILD_SHARED_LIB=y", I get error message "EAL: no driver
> > found for net_pcap_rx_0" and
> > "EAL: Driver cannot attach the device (net_pcap_rx_0)" by running pdump.
> > So I add library librte_pmd_pcap.so.
> [...]
> > +ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
> > + _LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP) += -lrte_pmd_pcap endif
>
> The idea of having drivers as shared libraries is to use them as plugins.
> We are not going to link the applications with every drivers.
> Instead we load them explicitly with -d option.
>
> Someone should document it in
> http://dpdk.org/doc/guides/linux_gsg/build_sample_apps.html#running-a-
> sample-application
> Any volunteer?
I will update the doc.
Thanks,
Reshma
@@ -41,6 +41,10 @@ CFLAGS += $(WERROR_FLAGS)
SRCS-y := main.c
+ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
+ _LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP) += -lrte_pmd_pcap
+endif
+
# this application needs libraries first
DEPDIRS-y += lib