Friday, September 14, 2018 6:06 AM, Jerin Jacob: > Subject: Re: [dpdk-dev] [PATCH 3/4] ethdev: add Rx offload outer L4 > checksum definitions > > -----Original Message----- > > Date: Thu, 13 Sep 2018 17:24:26 +0000 > > From: Shahaf Shuler <shah...@mellanox.com> > > To: Jerin Jacob <jerin.ja...@caviumnetworks.com>, Wenzhuo Lu > > <wenzhuo...@intel.com>, Jingjing Wu <jingjing...@intel.com>, Bernard > > Iremonger <bernard.iremon...@intel.com>, John McNamara > > <john.mcnam...@intel.com>, Marko Kovacevic > > <marko.kovace...@intel.com>, Thomas Monjalon > <tho...@monjalon.net>, > > Ferruh Yigit <ferruh.yi...@intel.com>, Andrew Rybchenko > > <arybche...@solarflare.com>, Olivier Matz <olivier.m...@6wind.com> > > CC: "dev@dpdk.org" <dev@dpdk.org> > > Subject: RE: [dpdk-dev] [PATCH 3/4] ethdev: add Rx offload outer L4 > > checksum definitions > > > > > > Thursday, September 13, 2018 4:47 PM, Jerin Jacob: > > > Subject: [dpdk-dev] [PATCH 3/4] ethdev: add Rx offload outer L4 > > > checksum definitions > > > > > > Introduced DEV_RX_OFFLOAD_OUTER_UDP_CKSUM, > > > DEV_RX_OFFLOAD_OUTER_TCP_CKSUM and > DEV_RX_OFFLOAD_OUTER_SCTP_CKSUM > > > offload flags and > > > > Out of curiosity, which TCP based tunnels you target with this current > patchset? > > I am not aware of any _popular_/_non proprietary_ protocols except SSTP > for VPN.
And your device can support such protocol inner and outer checksum check? >From what I see the inner packet of SSTP is encrypted by SSL. So for outer and inner checksum validation device will need to: 1. compute the outer TCP checksum 2. if valid decrypt the inner PPP packet 3. compute the PPP checksum.
