Akihiko Odaki wrote:
> RSS is a receive steering algorithm that can be negotiated to use with
> virtio_net. Conventionally the hash calculation was done by the VMM.
> However, computing the hash after the queue was chosen defeats the
> purpose of RSS.
>
> Another approach is to use eBPF steering p
MSR_IA32_FRED_SSP0 is an alias of the CET MSR_IA32_PL0_SSP and likely to
be used in the same way as FRED RSP0, i.e., host FRED SSP0 _should_ be
restored in arch_exit_to_user_mode_prepare(). However as of today Linux
has no plan to utilize kernel shadow stack thus no one cares host FRED
SSP0 (no?)
Akihiko Odaki wrote:
> They are useful to implement VIRTIO_NET_F_RSS and
> VIRTIO_NET_F_HASH_REPORT.
>
> Signed-off-by: Akihiko Odaki
> ---
> include/linux/virtio_net.h | 198
> +
> 1 file changed, 198 insertions(+)
>
> diff --git a/include/linux/vir
Akihiko Odaki wrote:
> tap used to simply advance iov_iter when it needs to pad virtio header.
> This leaves the garbage in the buffer as is and prevents telling if the
> header is padded or contains some real data.
>
> In theory, a user of tap can fill the buffer with zero before calling
> read()
Akihiko Odaki wrote:
> This new extension will be used by tun to carry the hash values and
> types to report with virtio-net headers.
>
> Signed-off-by: Akihiko Odaki
> ---
> include/linux/skbuff.h | 10 ++
> net/core/skbuff.c | 3 +++
> 2 files changed, 13 insertions(+)
>
> diff
Akihiko Odaki wrote:
> Allow the guest to reuse the hash value to make receive steering
> consistent between the host and guest, and to save hash computation.
>
> Signed-off-by: Akihiko Odaki
> ---
> Documentation/networking/tuntap.rst | 7 ++
> drivers/net/Kconfig | 1 +
> d
