>From: Jason Wang <jasowang@xxxxxxxxxx> >Sent: Monday, December 30, 2024 8:52 AM >To: Chia-Yu Chang (Nokia) <chia-yu.chang@xxxxxxxxxxxxxxxxxxx> >Cc: netdev@xxxxxxxxxxxxxxx; dsahern@xxxxxxxxx; davem@xxxxxxxxxxxxx; edumazet@xxxxxxxxxx; dsahern@xxxxxxxxxx; pabeni@xxxxxxxxxx; joel.granados@xxxxxxxxxx; kuba@xxxxxxxxxx; andrew+netdev@xxxxxxx; horms@xxxxxxxxxx; pablo@xxxxxxxxxxxxx; kadlec@xxxxxxxxxxxxx; netfilter-devel@xxxxxxxxxxxxxxx; coreteam@xxxxxxxxxxxxx; shenjian15@xxxxxxxxxx; salil.mehta@xxxxxxxxxx; shaojijie@xxxxxxxxxx; saeedm@xxxxxxxxxx; tariqt@xxxxxxxxxx; mst@xxxxxxxxxx; xuanzhuo@xxxxxxxxxxxxxxxxx; eperezma@xxxxxxxxxx; virtualization@xxxxxxxxxxxxxxx; ij@xxxxxxxxxx; ncardwell@xxxxxxxxxx; Koen De Schepper (Nokia) <koen.de_schepper@xxxxxxxxxxxxxxxxxxx>; g.white@xxxxxxxxxxxxx; ingemar.s.johansson@xxxxxxxxxxxx; mirja.kuehlewind@xxxxxxxxxxxx; cheshire@xxxxxxxxx; rs.ietf@xxxxxx; Jason_Livingood@xxxxxxxxxxx; vidhi_goel@xxxxxxxxx >Subject: Re: [PATCH v6 net-next 11/14] virtio_net: Accurate ECN flag in virtio_net_hdr > >[You don't often get email from jasowang@xxxxxxxxxx. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] > >CAUTION: This is an external email. Please be very careful when clicking links or opening attachments. See the URL nok.it/ext for additional information. > > > >On Sat, Dec 28, 2024 at 3:13 AM <chia-yu.chang@xxxxxxxxxxxxxxxxxxx> wrote: >> >> From: Chia-Yu Chang <chia-yu.chang@xxxxxxxxxxxxxxxxxxx> >> >> Unlike RFC 3168 ECN, accurate ECN uses the CWR flag as part of the ACE >> field to count new packets with CE mark; however, it will be corrupted >> by the RFC 3168 ECN-aware TSO. Therefore, fallback shall be applied by >> seting NETIF_F_GSO_ACCECN to ensure that the CWR flag should not be >> changed within a super-skb. >> >> To apply the aforementieond new AccECN GSO for virtio, new featue bits >> for host and guest are added for feature negotiation between driver >> and device. And the translation of Accurate ECN GSO flag between >> virtio_net_hdr and skb header for NETIF_F_GSO_ACCECN is also added to >> avoid CWR flag corruption due to RFC3168 ECN TSO. >> >> Signed-off-by: Chia-Yu Chang <chia-yu.chang@xxxxxxxxxxxxxxxxxxx> >> --- >> drivers/net/virtio_net.c | 14 +++++++++++--- >> drivers/vdpa/pds/debugfs.c | 6 ++++++ >> include/linux/virtio_net.h | 16 ++++++++++------ >> include/uapi/linux/virtio_net.h | 5 +++++ >> 4 files changed, 32 insertions(+), 9 deletions(-) > >Is there a link to the spec patch? It needs to be accepted first. > >Thanks Hi Jason, Thanks for the feedback, I found the virtio-spec in github: https://github.com/oasis-tcs/virtio-spec but not able to find the procedure to propose. Could you help to share the procedure to propose spec patch? Thanks. -- Chia-Yu
