Hi > -----Original Message----- > From: Dekel Peled <dek...@nvidia.com> > Sent: Friday, October 2, 2020 12:15 AM > Subject: [PATCH v2 01/11] ethdev: add extensions attributes to IPv6 item > > Using the current implementation of DPDK, an application cannot match on > IPv6 packets, based on the existing extension headers, in a simple way. > > Field 'Next Header' in IPv6 header indicates type of the first extension > header only. Following extension headers can't be identified by > inspecting the IPv6 header. > As a result, the existence or absence of specific extension headers > can't be used for packet matching. > > For example, fragmented IPv6 packets contain a dedicated extension header > (which is implemented in a later patch of this series). > Non-fragmented packets don't contain the fragment extension header. > For an application to match on non-fragmented IPv6 packets, the current > implementation doesn't provide a suitable solution. > Matching on the Next Header field is not sufficient, since additional > extension headers might be present in the same packet. > To match on fragmented IPv6 packets, the same difficulty exists. > > This patch implements the update as detailed in RFC [1]. > A set of additional values will be added to IPv6 header struct. > These values will indicate the existence of every defined extension > header type, providing simple means for identification of existing > extensions in the packet header. > Continuing the above example, fragmented packets can be identified using > the specific value indicating existence of fragment extension header. > > [1] > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmails.dp > dk.org%2Farchives%2Fdev%2F2020- > August%2F177257.html&data=02%7C01%7Corika%40nvidia.com%7C1a92 > 82d24518485dd37508d8664f2634%7C43083d15727340c1b7db39efd9ccc17a%7 > C0%7C0%7C637371837412802968&sdata=7Jdz3yt3nsSrWYei69BwWro7cZ > 0VwdnKZ0sfcD8MglQ%3D&reserved=0 > > Signed-off-by: Dekel Peled <dek...@nvidia.com> > ---
Acked-by: Ori Kam <or...@nvidia.com> Thanks, Ori
