linux-kernel - [PATCH v6 0/2] net: mhi: Add support to enable ethernet interface

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Message-Id: <20251209-vdev_next-20251208_eth_v6-v6-0-80898204f5d8@quicinc.com>
Date: Tue, 09 Dec 2025 16:55:37 +0530
From: Vivek Pernamitta <vivek.pernamitta@....qualcomm.com>
To: Andrew Lunn <andrew+netdev@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Manivannan Sadhasivam <mani@...nel.org>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, mhi@...ts.linux.dev,
        linux-arm-msm@...r.kernel.org,
        Vivek Pernamitta <vivek.pernamitta@....qualcomm.com>
Subject: [PATCH v6 0/2] net: mhi: Add support to enable ethernet interface

Add support to configure a new client as Ethernet type over MHI by
setting "mhi_device_info.ethernet_if = true". Create a new Ethernet
interface named eth%d. This complements existing NET driver support.

Introduce IP_SW1, ETH0, and ETH1 network interfaces required for
M-plane, NETCONF, and S-plane components.

M-plane:
Implement DU M-Plane software for non-real-time O-RAN management
between O-DU and O-RU using NETCONF/YANG and O-RAN WG4 M-Plane YANG
models. Provide capability exchange, configuration management,
performance monitoring, and fault management per O-RAN.WG4.TS.MP.0-
R004-v18.00.

Netconf:
Use NETCONF protocol for configuration operations such as fetching,
modifying, and deleting network device configurations.

S-plane:
Support frequency and time synchronization between O-DUs and O-RUs
using Synchronous Ethernet and IEEE 1588. Assume PTP transport over
L2 Ethernet (ITU-T G.8275.1) for full timing support; allow PTP over
UDP/IP (ITU-T G.8275.2) with reduced reliability. as per ORAN spec
O-RAN.WG4.CUS.0-R003-v12.00.

Signed-off-by: Vivek Pernamitta <vivek.pernamitta@....qualcomm.com>
---
patchset link for V5 : https://lore.kernel.org/all/20251106-vdev_next-20251106_eth-v5-0-bbc0f7ff3a68@quicinc.com/
patchset link for V1 (first post) : https://lore.kernel.org/all/20250724-b4-eth_us-v1-0-4dff04a9a128@quicinc.com/

changes to v6:
- Removed interm variable useage as per comments from Simon and Dmirty.
- Squashed gerrits 1 and 2 in single gerrit.
- Added more description for M-plane, Netconf and S-plane.

changes to v5:
- change in email ID from "quic_vpernami@...cinc.com" to "vivek.pernamitta@....qualcomm.com"
- Renamed to patch v5 as per comments from Manivannan
- Restored to original name as per comments from Jakub
- Renamed the ethernet interfce to eth%d as per Jakub
---

---
Vivek Pernamitta (2):
      net: mhi: Enable Ethernet interface support
      bus: mhi: host: pci: Enable IP_SW1, IP_ETH0 and IP_ETH1 channels for QDU100

 drivers/bus/mhi/host/pci_generic.c |  8 ++++
 drivers/net/mhi_net.c              | 75 +++++++++++++++++++++++++++++++-------
 2 files changed, 70 insertions(+), 13 deletions(-)
---
base-commit: 82bcd04d124a4d84580ea4a8ba6b120db5f512e7
change-id: 20251209-vdev_next-20251208_eth_v6-c405aed13fed

Best regards,
-- 
Vivek Pernamitta <<quic_vpernami@...cinc.com>>