linux-kernel - [PATCH rdma-next v4 0/4] RDMA/mana_ib: allow separate mana

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Message-Id: <1746633545-17653-1-git-send-email-kotaranov@linux.microsoft.com>
Date: Wed,  7 May 2025 08:59:01 -0700
From: Konstantin Taranov <kotaranov@...ux.microsoft.com>
To: kotaranov@...rosoft.com,
	pabeni@...hat.com,
	haiyangz@...rosoft.com,
	kys@...rosoft.com,
	edumazet@...gle.com,
	kuba@...nel.org,
	davem@...emloft.net,
	decui@...rosoft.com,
	wei.liu@...nel.org,
	longli@...rosoft.com,
	jgg@...pe.ca,
	leon@...nel.org
Cc: linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [PATCH rdma-next v4 0/4] RDMA/mana_ib: allow separate mana_ib for each mana client

From: Konstantin Taranov <kotaranov@...rosoft.com>

Microsoft mana adapter has 2 devices in the HW: mana ethernet device and RNIC device.
Both devices can implement RDMA drivers and, so far, they have been sharing
one ib device context. However, they are different devices with different
capabilities in the HW and have different lifetime model.

This series allows us to model the aforementioned two devices as separate ib devices.
The mana_ib will continue supporting two devices but as individual ib devices.
It enables the driver to dynamically destroy and create the auxiliary device over
RNIC, when the HW reboots the RNIC module. Without this separation, the reboot
would cause destruction of the ib device serving DPDK clients from the uninterrupted
ethernet HW module.

v2:
- renamed aux device from mana.dpdk to mana.eth (patch 1 and 2)
- Fixed a possible race between servicing and pci threads (patch 4)

v3:
- Added vendorid and partid in mana_ib_query_device (patch 2)

v4:
- rabased on latest rdma-next

Konstantin Taranov (3):
  net: mana: Probe rdma device in mana driver
  RDMA/mana_ib: Add support of mana_ib for RNIC and ETH nic
  RDMA/mana_ib: unify mana_ib functions to support any gdma device

Shiraz Saleem (1):
  net: mana: Add support for auxiliary device servicing events

 drivers/infiniband/hw/mana/cq.c               |   4 +-
 drivers/infiniband/hw/mana/device.c           | 174 +++++++++---------
 drivers/infiniband/hw/mana/main.c             |  82 +++++++--
 drivers/infiniband/hw/mana/mana_ib.h          |   6 +
 drivers/infiniband/hw/mana/qp.c               |   5 +-
 .../net/ethernet/microsoft/mana/gdma_main.c   |  26 ++-
 .../net/ethernet/microsoft/mana/hw_channel.c  |  20 ++
 drivers/net/ethernet/microsoft/mana/mana_en.c | 108 ++++++++++-
 include/net/mana/gdma.h                       |  19 ++
 include/net/mana/hw_channel.h                 |   9 +
 include/net/mana/mana.h                       |   3 +
 11 files changed, 333 insertions(+), 123 deletions(-)

-- 
2.43.0