linux-kernel - [PATCH v3 0/2] Properly initialize speed/duplex and remove vDPA config updates

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Message-ID: <20240904151115.205622-1-carlos.bilbao.osdev@gmail.com>
Date: Wed,  4 Sep 2024 10:11:13 -0500
From: Carlos Bilbao <carlos.bilbao.osdev@...il.com>
To: dtatulea@...dia.com,
	mst@...hat.com,
	jasowang@...hat.com,
	shannon.nelson@....com,
	sashal@...nel.org,
	alvaro.karsz@...id-run.com,
	christophe.jaillet@...adoo.fr,
	steven.sistare@...cle.com
Cc: bilbao@...edu,
	xuanzhuo@...ux.alibaba.com,
	johnah.palmer@...cle.com,
	eperezma@...hat.com,
	cratiu@...dia.com,
	virtualization@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Carlos Bilbao <cbilbao@...italocean.com>
Subject: [PATCH v3 0/2] Properly initialize speed/duplex and remove vDPA config updates

From: Carlos Bilbao <cbilbao@...italocean.com>

Initialize speed and duplex for virtio_net_config to UNKNOWN (mlx5_vdpa
vDPA devices currently do not support VIRTIO_NET_F_SPEED_DUPLEX). Remove
ioctl VHOST_VDPA_SET_CONFIG and its related logic as it is not supported;
see: https://docs.oasis-open.org/virtio/virtio/v1.3/virtio-v1.3.html

Carlos:
  vdpa/mlx5: Set speed and duplex of vDPA devices to UNKNOWN
  vdpa: Remove ioctl VHOST_VDPA_SET_CONFIG per spec compliance

---

Changes since v1:
 Link: https://lkml.org/lkml/2024/8/29/1368
 - Fix prefix of the first commit and add Reviewed-By tag.
 - Redo second commit completely: instead of attempting to add support to
   set configuration fields, remove ioctl and support entirely from vDPA
   implementations -- because it's not allowed by spec.

Changes since v2:
 Link: https://lkml.org/lkml/2024/9/3/1407
 - Fix first commit by changing 4 spaces for a tab.
 - In second commit, ENI is legacy and should keep set_config(). Change it
   to set_config_legacy() to avoid future confusion and erroneous
   implementations.

---
 drivers/vdpa/alibaba/eni_vdpa.c    |  2 +-
 drivers/vdpa/ifcvf/ifcvf_main.c    | 10 ----------
 drivers/vdpa/mlx5/net/mlx5_vnet.c  | 19 ++++++++++++-------
 drivers/vdpa/pds/vdpa_dev.c        | 16 ----------------
 drivers/vdpa/solidrun/snet_main.c  | 18 ------------------
 drivers/vdpa/vdpa.c                | 16 ----------------
 drivers/vdpa/vdpa_sim/vdpa_sim.c   | 16 ----------------
 drivers/vdpa/vdpa_sim/vdpa_sim.h   |  1 -
 drivers/vdpa/vdpa_user/vduse_dev.c |  7 -------
 drivers/vdpa/virtio_pci/vp_vdpa.c  | 14 --------------
 drivers/vhost/vdpa.c               | 26 --------------------------
 drivers/virtio/virtio_vdpa.c       |  9 ---------
 include/linux/vdpa.h               |  7 ++++---
 include/uapi/linux/vhost.h         |  8 ++++----
 14 files changed, 21 insertions(+), 148 deletions(-)