Re: [dpdk-stable] [PATCH] pmdinfogen: Fix pmdinfogen to select proper endianess on cross-compile

Re: [dpdk-stable] [PATCH] pmdinfogen: Fix pmdinfogen to select proper endianess on cross-compile

[Thomas Monjalon]

2016-11-21 10:11, Bruce Richardson:
> On Fri, Nov 18, 2016 at 01:47:52PM -0500, Neil Horman wrote:
> > pmdinfogen has a bug in which, during build, it pulls in rte_byteorder.h to
> > obtain the rte macros for byteswapping between the cpu byte order and big or
> > little endian.  Unfortunately, pmdinfogen is a tool that is only meant to be run
> > during the build of dpdk components, and so, it runs on the host.  In cross
> > compile environments however, the rte_byteorder.h is configured using a target
> > cpu, who's endianess may differ from that of the host, leading to improper
> > swapping.
> > 
> > The fix is to use host system defined byte swapping routines rather than the
> > dpdk provided routines.  Note that we are using non posix compliant routines, as
> > the posix compliant api only addresses 16 and 32 bit swaps, and we also need 64
> > bit swaps.  Those macros exist (via endian.h), but BSD and Linux put that header
> > in different locations so some ifdeffery is required.
> > 
> > Tested successfully by myself on Linux and BSD systems.
> > 
> > Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
> > CC: Hemant Agrawal <hemant.agrawal@nxp.com>
> > CC: Jerin Jacob <Jerin.Jacob@cavium.com>
> > CC: Bruce Richardson <bruce.richardson@intel.com>
> > CC: Thomas Monjalon <thomas.monjalon@6wind.com>
> > ---
> >  buildtools/pmdinfogen/pmdinfogen.h | 10 +++++++---
> >  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> Compiles fine on FreeBSD with clang.
> 
> Tested-by: Bruce Richardson <bruce.richardson@intel.com>

Fixed "endianness" typo, headline, added Fixes:, CC: stable@dpdk.org and removed a trailing whitespace, then
applied, thanks