[dpdk-dev] l3fwd error, port 0 is not present on the board

[Lyn M]

Neil, your patch works.  I am now able to run testpmd, as well as l3fwd
with DPDK 1.8.0 and CONFIG_RTE_BUILD_COMBINE_LIBS=y.  Thank you much!

In my original post, I thought my choice of hex portmask -p 0x3 was causing
this issue -- now I know that was not the case.  But, I am still curious
about how the hex portmask is determined.  Since I only have two ports
bound to igb_uio, my hex postmask will always be 0x3?  What if I choose to
bind other ports to igb_uio?  Is there a Linux command I can run to
determine what mask to use with the -p option?

Happy New Year --
Lyn

On Wed, Dec 31, 2014 at 10:00 PM, Neil Horman <nhorman at tuxdriver.com> wrote:

> On Wed, Dec 31, 2014 at 10:37:45PM -0500, Neil Horman wrote:
> > On Wed, Dec 31, 2014 at 10:50:10AM -0600, Lyn M wrote:
> > > Neil,
> > > When I build DPDK 1.8.0 with the default value
> CONFIG_RTE_BUILD_COMBINE_LIBS=n,
> > > I am able to run the testpmd successfully.  So, that does appear to be
> the
> > > culprit.
> > > The objdump -t output for testpmd (with COMBINE_LIBS=n and
> COMBINE_LIBS=y)
> > > files are here:
> > >
> https://www.dropbox.com/sh/6os9yfn22jjcnmy/AAAjEV3u06XQ1t3UXdWcgru0a?dl=0
> > >
> > > Thanks,
> > > Lyn
> > >
> > I see the problem.  none of the constructors are included in the l3fwd
> app.  I
> > think you might need 174572477028b7f04700389e38f87d2ba01a0adc.  Its also
> > possible something else has gone wrong withthe COMBINE_LIBS option.  Try
> > building with the head of the tree, and if that doesn't fix it, we can
> start
> > debugging in earnest.
> > Neil
>
> Found the problem.  Please try this patch
>
>
> diff --git a/mk/rte.app.mk b/mk/rte.app.mk
> index e1a0dbf..40afb2c 100644
> --- a/mk/rte.app.mk
> +++ b/mk/rte.app.mk
> @@ -61,6 +61,10 @@ ifeq ($(NO_AUTOLIBS),)
>
>  LDLIBS += --whole-archive
>
> +ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),y)
> +LDLIBS += -l$(RTE_LIBNAME)
> +endif
> +
>  ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
>
>  ifeq ($(CONFIG_RTE_LIBRTE_DISTRIBUTOR),y)
> @@ -251,10 +255,6 @@ build: _postbuild
>
>  exe2cmd = $(strip $(call dotfile,$(patsubst %,%.cmd,$(1))))
>
> -ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),y)
> -LDLIBS += -l$(RTE_LIBNAME)
> -endif
> -
>  ifeq ($(LINK_USING_CC),1)
>  override EXTRA_LDFLAGS := $(call linkerprefix,$(EXTRA_LDFLAGS))
>  O_TO_EXE = $(CC) $(CFLAGS) $(LDFLAGS_$(@)) \
>