linux-toradex.git/include/linux/netdev_features.h, branch v4.19-rc5

net: Add TLS RX offload feature

2018-07-16T07:12:09+00:00

This patch adds a netdev feature to configure TLS RX inline crypto offload.

Signed-off-by: Ilya Lesokhin 
Signed-off-by: Boris Pismenny 
Signed-off-by: David S. Miller

gso: limit udp gso to egress-only virtual devices

2018-05-23T18:48:44+00:00

Until the udp receive stack supports large packets (UDP GRO), GSO
packets must not loop from the egress to the ingress path.

Revert the change that added NETIF_F_GSO_UDP_L4 to various virtual
devices through NETIF_F_GSO_ENCAP_ALL as this included devices that
may loop packets, such as veth and macvlan.

Instead add it to specific devices that forward to another device's
egress path, bonding and team.

Fixes: 83aa025f535f ("udp: add gso support to virtual devices")
CC: Alexander Duyck 
Signed-off-by: Willem de Bruijn 
Signed-off-by: David S. Miller

net: Add TLS TX offload features

2018-05-01T13:42:47+00:00

This patch adds a netdev feature to configure TLS TX offloads.

Signed-off-by: Ilya Lesokhin 
Signed-off-by: Boris Pismenny 
Signed-off-by: Aviad Yehezkel 
Signed-off-by: David S. Miller

udp: add gso support to virtual devices

2018-04-26T19:09:12+00:00

Virtual devices such as tunnels and bonding can handle large packets.
Only segment packets when reaching a physical or loopback device.

Signed-off-by: Willem de Bruijn 
Signed-off-by: David S. Miller

ethtool: enable Inline TLS in HW

2018-04-01T03:37:32+00:00

Ethtool option enables TLS record offload on HW, user
configures the feature for netdev capable of Inline TLS.
This allows user to define custom sk_prot for Inline TLS sock

Signed-off-by: Atul Gupta 
Signed-off-by: David S. Miller

net: Introduce NETIF_F_GRO_HW.

2017-12-19T15:38:36+00:00

Introduce NETIF_F_GRO_HW feature flag for NICs that support hardware
GRO.  With this flag, we can now independently turn on or off hardware
GRO when GRO is on.  Previously, drivers were using NETIF_F_GRO to
control hardware GRO and so it cannot be independently turned on or
off without affecting GRO.

Hardware GRO (just like GRO) guarantees that packets can be re-segmented
by TSO/GSO to reconstruct the original packet stream.  Logically,
GRO_HW should depend on GRO since it a subset, but we will let
individual drivers enforce this dependency as they see fit.

Since NETIF_F_GRO is not propagated between upper and lower devices,
NETIF_F_GRO_HW should follow suit since it is a subset of GRO.  In other
words, a lower device can independent have GRO/GRO_HW enabled or disabled
and no feature propagation is required.  This will preserve the current
GRO behavior.  This can be changed later if we decide to propagate GRO/
GRO_HW/RXCSUM from upper to lower devices.

Cc: Ariel Elior 
Cc: everest-linux-l2@cavium.com
Signed-off-by: Michael Chan 
Acked-by: Alexander Duyck 
Signed-off-by: David S. Miller

net: accept UFO datagrams from tuntap and packet

2017-11-23T16:37:35+00:00

Tuntap and similar devices can inject GSO packets. Accept type
VIRTIO_NET_HDR_GSO_UDP, even though not generating UFO natively.

Processes are expected to use feature negotiation such as TUNSETOFFLOAD
to detect supported offload types and refrain from injecting other
packets. This process breaks down with live migration: guest kernels
do not renegotiate flags, so destination hosts need to expose all
features that the source host does.

Partially revert the UFO removal from 182e0b6b5846~1..d9d30adf5677.
This patch introduces nearly(*) no new code to simplify verification.
It brings back verbatim tuntap UFO negotiation, VIRTIO_NET_HDR_GSO_UDP
insertion and software UFO segmentation.

It does not reinstate protocol stack support, hardware offload
(NETIF_F_UFO), SKB_GSO_UDP tunneling in SKB_GSO_SOFTWARE or reception
of VIRTIO_NET_HDR_GSO_UDP packets in tuntap.

To support SKB_GSO_UDP reappearing in the stack, also reinstate
logic in act_csum and openvswitch. Achieve equivalence with v4.13 HEAD
by squashing in commit 939912216fa8 ("net: skb_needs_check() removes
CHECKSUM_UNNECESSARY check for tx.") and reverting commit 8d63bee643f1
("net: avoid skb_warn_bad_offload false positives on UFO").

(*) To avoid having to bring back skb_shinfo(skb)->ip6_frag_id,
ipv6_proxy_select_ident is changed to return a __be32 and this is
assigned directly to the frag_hdr. Also, SKB_GSO_UDP is inserted
at the end of the enum to minimize code churn.

Tested
  Booted a v4.13 guest kernel with QEMU. On a host kernel before this
  patch `ethtool -k eth0` shows UFO disabled. After the patch, it is
  enabled, same as on a v4.13 host kernel.

  A UFO packet sent from the guest appears on the tap device:
    host:
      nc -l -p -u 8000 &
      tcpdump -n -i tap0

    guest:
      dd if=/dev/zero of=payload.txt bs=1 count=2000
      nc -u 192.16.1.1 8000 < payload.txt

  Direct tap to tap transmission of VIRTIO_NET_HDR_GSO_UDP succeeds,
  packets arriving fragmented:

    ./with_tap_pair.sh ./tap_send_ufo tap0 tap1
    (from https://github.com/wdebruij/kerneltools/tree/master/tests)

Changes
  v1 -> v2
    - simplified set_offload change (review comment)
    - documented test procedure

Link: http://lkml.kernel.org/r/
Fixes: fb652fdfe837 ("macvlan/macvtap: Remove NETIF_F_UFO advertisement.")
Reported-by: Michal Kubecek 
Signed-off-by: Willem de Bruijn 
Acked-by: Jason Wang 
Signed-off-by: David S. Miller

net: add new netdevice feature for offload of RX port for UDP tunnels

2017-07-24T20:52:59+00:00

This adds a new netdevice feature, so that the offloading of RX port for
UDP tunnels can be disabled by the administrator on some netdevices,
using the "rx-udp_tunnel-port-offload" feature in ethtool.

This feature is set for all devices that provide ndo_udp_tunnel_add.

Signed-off-by: Sabrina Dubroca 
Signed-off-by: David S. Miller

net: Kill NETIF_F_UFO and SKB_GSO_UDP.

2017-07-17T16:52:58+00:00

No longer used.

Signed-off-by: David S. Miller

net: Add ESP offload features

2017-04-14T08:05:36+00:00

This patch adds netdev features to configure IPsec offloads.

Signed-off-by: Steffen Klassert