Hi Sugesh, > -----Original Message----- > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Chandran, Sugesh > Sent: Friday, July 15, 2016 10:23 AM > To: 'Adrien Mazarguil' <adrien.mazarguil at 6wind.com>
<snip> > > > > To PMD maintainers: please comment if you know devices that > > > > support tagging matching packets with more than 32 bits of > > > > user-provided data! > > > [Sugesh] I guess the flow director ID is 64 bit , The XL710 datasheet > > > says so. > > > And in the 'rte_mbuf' structure the 64 bit FDIR-ID is shared with > > > rss hash. This can be a software driver limitation that expose only > > > 32 bit. Possibly because of cache alignment issues? Since the > > > hardware can support 64 bit, I feel it make sense to support 64 bit as > > > well. XL710 supports 32bit FDIR ID only, I believe you mix it up with flexible payload data which can take 0, 4 or 8 bytes of the RX descriptor. Regards, Andrey
