From: Abhijit Gangurde <abhijit.gangurde@amd.com>
To: <jgg@ziepe.ca>, <leon@kernel.org>, <brett.creeley@amd.com>,
<andrew+netdev@lunn.ch>, <davem@davemloft.net>,
<edumazet@google.com>, <kuba@kernel.org>, <pabeni@redhat.com>
Cc: <allen.hubbe@amd.com>, <nikhil.agarwal@amd.com>,
<linux-rdma@vger.kernel.org>, <netdev@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
Abhijit Gangurde <abhijit.gangurde@amd.com>
Subject: [PATCH 0/4] ionic: RDMA completion timestamping support
Date: Wed, 1 Apr 2026 15:54:57 +0530 [thread overview]
Message-ID: <20260401102501.3395305-1-abhijit.gangurde@amd.com> (raw)
Hi,
This series adds RDMA completion timestamp support for ionic.
It enables PHC registration for RDMA timestamp capability, exposes a PHC
state page for safe user-space reads, maps that PHC state through RDMA
ucontext mmap, and extends the RDMA CQE format to carry completion
timestamps.
With this, user space can read completion timestamps and convert them to
wall time with low overhead.
Patches:
net: ionic: register PHC for rdma timestamping
net: ionic: Add PHC state page for user space access
RDMA/ionic: map PHC state into user space
RDMA/ionic: add completion timestamp to CQE format
Provider's PR: https://github.com/linux-rdma/rdma-core/pull/1724
Abhijit Gangurde (4):
net: ionic: register PHC for rdma timestamping
net: ionic: Add PHC state page for user space access
RDMA/ionic: map PHC state into user space
RDMA/ionic: add completion timestamp to CQE format
.../infiniband/hw/ionic/ionic_controlpath.c | 36 ++++++++++-
drivers/infiniband/hw/ionic/ionic_datapath.c | 43 ++++++-------
drivers/infiniband/hw/ionic/ionic_fw.h | 12 +++-
drivers/infiniband/hw/ionic/ionic_ibdev.h | 2 +
drivers/infiniband/hw/ionic/ionic_lif_cfg.c | 2 +
drivers/infiniband/hw/ionic/ionic_lif_cfg.h | 1 +
.../net/ethernet/pensando/ionic/ionic_if.h | 1 +
.../net/ethernet/pensando/ionic/ionic_lif.c | 5 +-
.../net/ethernet/pensando/ionic/ionic_lif.h | 3 +-
.../net/ethernet/pensando/ionic/ionic_phc.c | 61 ++++++++++++++++---
include/uapi/rdma/ionic-abi.h | 12 ++++
11 files changed, 144 insertions(+), 34 deletions(-)
--
2.43.0
next reply other threads:[~2026-04-01 10:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-01 10:24 Abhijit Gangurde [this message]
2026-04-01 10:24 ` [PATCH 1/4] net: ionic: register PHC for rdma timestamping Abhijit Gangurde
2026-04-01 10:24 ` [PATCH 2/4] net: ionic: Add PHC state page for user space access Abhijit Gangurde
2026-04-02 0:06 ` Jakub Kicinski
2026-04-01 10:25 ` [PATCH 3/4] RDMA/ionic: map PHC state into user space Abhijit Gangurde
2026-04-01 10:25 ` [PATCH 4/4] RDMA/ionic: add completion timestamp to CQE format Abhijit Gangurde
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