From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DADD7348C7D; Thu, 16 Jul 2026 08:01:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784188878; cv=none; b=G8HtZ83TJha7u1DIs926ff0j4YyOiDevlU/tq2TX0vawtIQZfEAdV/Vz7/w4BfXfLfDTLy4YzKO1TCsNbCeSkuvSdAmgMOIbQBbEwKuNtzC0Ws3YwPHfKqV4+61/I/UQwwqouNYPWL17RMeXi1FKxFffM8gXoG6smWnCEkOuN+w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784188878; c=relaxed/simple; bh=5NUKSF+3ziXsrHkaOz8cg7W8bNV+FxbN/Kw4pImOsIg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=FgADUWHwbDY01tHOfVNlHYBgAtjAeGUtjmDkg8EQqsxLpn9Petyj51zBcYCB/PsMZ5mDCPFJu3/tTJWkL73Af6DZ7oHmKhzL0iT56M5Yg6jzMMF8QF5WHNWTt4L9hSzXDHng7YX7e9ySYG36EYXLifm3HYjsOSmwDzj1tXmXn/s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LO70z5mg; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LO70z5mg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FF931F000E9; Thu, 16 Jul 2026 08:01:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784188876; bh=yKztRyeQzLRt8X/OrCjjwbJIBJH99esVB1d4pT24fdY=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=LO70z5mg/8IKjr+XYBL4vjIV3YEmLkeWB89X39y/s/9sf5pYMc3IN/Odlxdks/JVg WM0+auOCpbj4SwVfABzgh/pWpC/WmQtrshoayHJb126LL8MkFOZUg36HMY6AVU8zZc brRQDVA8H9sMoTZkAHB3CmvApP8YV6gx2Mg22re799oNua0SZxOY3n4UKjsfvJIhXg nOSDcxbwueehPTDINSfc5+SNVcBfUiQV3WZy6XU0jFoBgNs3z9Z6kLB7a815CVmKTu usaIIlqMG2I/2q/TJLpYMxCsO3lg8Xu6S++5Gq2Hnn19j4JWLDCIBRk/6Vp+Ec3jcz NDYDYRrfd9uAg== Date: Thu, 16 Jul 2026 11:01:10 +0300 From: Leon Romanovsky To: Abhijit Gangurde Cc: jgg@ziepe.ca, kuba@kernel.org, davem@davemloft.net, allen.hubbe@amd.com, andrew+netdev@lunn.ch, brett.creeley@amd.com, edumazet@google.com, pabeni@redhat.com, nikhil.agarwal@amd.com, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, dwmw2@infradead.org Subject: Re: [for-next v4 0/5] ionic: RDMA completion timestamping support Message-ID: <20260716080110.GA70906@unreal> References: <20260610154216.712374-1-abhijit.gangurde@amd.com> <7c9dea7d-a551-6f6a-3c3a-e0b55497c645@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <7c9dea7d-a551-6f6a-3c3a-e0b55497c645@amd.com> On Wed, Jul 15, 2026 at 06:38:06PM +0530, Abhijit Gangurde wrote: > Hi Jason, Jakub, > > Gentle ping — if there are no further concerns, could this series be merged > through the rdma tree? Jason requested converting any driver that extends udata to use uverbs_robust_udata. https://lore.kernel.org/linux-rdma/13-v3-bd56dd443069+49-bnxt_re_uapi_jgg@nvidia.com/ Thanks > > Thanks, > Abhijit > > On 6/10/26 21:12, Abhijit Gangurde wrote: > > 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. > > > > Provider's PR: https://github.com/linux-rdma/rdma-core/pull/1724 > > > > v4: > > - Added alias mapping of mlx5_ib_clock_info to ib_uverbs_clock_info > > v3: > > - Renamed ib_uverbs_phc_state to ib_uverbs_clock_info > > - Moved mlx5 to use the common clock info structure > > - Addressed review feedback from Sashiko > > - https://lore.kernel.org/linux-rdma/20260606050003.3648306-1-abhijit.gangurde@amd.com/ > > v2: > > - changed ionic_phc_state to ib_uverbs_phc_state and moved it under > > ib_user_verbs.h > > - https://lore.kernel.org/linux-rdma/20260512092623.1157199-1-abhijit.gangurde@amd.com/ > > v1: > > - https://lore.kernel.org/all/20260401102501.3395305-1-abhijit.gangurde@amd.com/ > > > > Abhijit Gangurde (5): > > 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 > > RDMA/mlx5: move mlx5 clock info to common struct ib_uverbs_clock_info > > > > .../infiniband/hw/ionic/ionic_controlpath.c | 34 ++++++++++ > > 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 + > > .../ethernet/pensando/ionic/ionic_ethtool.c | 12 ++-- > > .../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 | 63 ++++++++++++++++--- > > include/uapi/rdma/ib_user_verbs.h | 33 ++++++++++ > > include/uapi/rdma/ionic-abi.h | 1 + > > include/uapi/rdma/mlx5-abi.h | 15 ++--- > > 14 files changed, 179 insertions(+), 48 deletions(-) > >