From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id AF64C3EDAB9; Wed, 4 Feb 2026 13:58:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770213493; cv=none; b=Fm6MFLbRi0BLcq5xjQYxOIMy0vrrhPNflzYZLX9VYqgVJOPafNpp5EieZ5L+n3cbqZ2UDIAMy/g4WT+T8IdcxMr3w49fliyQJoVcq1PAitLv1nl1VhazWXj/FBKwB0qnTpdvxLnEcXfY5Ga59X6jUoXOA5ulwpGwxFjkNenk268= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770213493; c=relaxed/simple; bh=pvC0VsYcRAmKSgsw8BzjRLW7zgbHzHLclYysy+BsMpM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ZbSjhn7IwwYiK9jx0JbZcDXOC0aPQxeKLwV8o2QZeoig46LzTZifiY0oLhjjWmPYUjLbIKnI1pPNwe1e/4ofRY6b4bLU8HBSzb/uvmoHrbUsZ+bMSY5ZcQ2wW5LeisloRLB6i7tEUsn1nZ7QbT0HmbSQ3TVIQTvsTTUPPwlgxIg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=Bq+8YQwB; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="Bq+8YQwB" Received: by linux.microsoft.com (Postfix, from userid 1186) id AA46B20B7165; Wed, 4 Feb 2026 05:58:13 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com AA46B20B7165 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1770213493; bh=PLwJJumRTsz9j7gCg6Gobs9azCo8OVYxtwSxuo3klCY=; h=From:To:Cc:Subject:Date:From; b=Bq+8YQwBZlTThifu+vwZfvIcKpx8BAe9/ksxsA8IU66z8qb40R2KfUtCnk/82FRLD 9heyB3ThMxGffFs8PZXjGV9Kb3VvJRmPHe5G2GxC2QMvs0rAVwPcd27ZSQ2s2OQNtq 8kr+tMkKC+RmnDFM0PfDnm4F9GMPMRDnM7EoEquY= From: Konstantin Taranov To: kotaranov@microsoft.com, shirazsaleem@microsoft.com, longli@microsoft.com, jgg@ziepe.ca, leon@kernel.org Cc: linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH rdma-next 1/1] RDMA/mana_ib: return PD number to the user Date: Wed, 4 Feb 2026 05:58:13 -0800 Message-ID: <20260204135813.870538-1-kotaranov@linux.microsoft.com> X-Mailer: git-send-email 2.43.7 Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Konstantin Taranov Implement returning to userspace applications PDNs of created PDs. Allow users to request short PDNs which are 16 bits. Signed-off-by: Konstantin Taranov --- drivers/infiniband/hw/mana/main.c | 19 ++++++++++++++++++- include/net/mana/gdma.h | 4 ++-- include/uapi/rdma/mana-abi.h | 14 ++++++++++++++ 3 files changed, 34 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c index fac159f71..7ee4493cb 100644 --- a/drivers/infiniband/hw/mana/main.c +++ b/drivers/infiniband/hw/mana/main.c @@ -69,9 +69,11 @@ int mana_ib_cfg_vport(struct mana_ib_dev *dev, u32 port, struct mana_ib_pd *pd, int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) { struct mana_ib_pd *pd = container_of(ibpd, struct mana_ib_pd, ibpd); + struct mana_ib_alloc_pd_resp cmd_resp = {}; struct ib_device *ibdev = ibpd->device; struct gdma_create_pd_resp resp = {}; struct gdma_create_pd_req req = {}; + struct mana_ib_alloc_pd ucmd = {}; enum gdma_pd_flags flags = 0; struct mana_ib_dev *dev; struct gdma_context *gc; @@ -83,8 +85,15 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_PD, sizeof(req), sizeof(resp)); - if (!udata) + if (!udata) { flags |= GDMA_PD_FLAG_ALLOW_GPA_MR; + } else { + err = ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen)); + if (err) + return err; + if (ucmd.flags & MANA_IB_PD_SHORT_PDN) + flags |= GDMA_PD_FLAG_SHORT_PDN; + } req.flags = flags; err = mana_gd_send_request(gc, sizeof(req), &req, @@ -107,6 +116,14 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) mutex_init(&pd->vport_mutex); pd->vport_use_count = 0; + + if (udata) { + cmd_resp.pdn = resp.pd_id; + err = ib_copy_to_udata(udata, &cmd_resp, min(sizeof(cmd_resp), udata->outlen)); + if (err) + return err; + } + return 0; } diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h index 8649eb789..cebb9b2bd 100644 --- a/include/net/mana/gdma.h +++ b/include/net/mana/gdma.h @@ -824,8 +824,8 @@ struct gdma_destroy_dma_region_req { }; /* HW DATA */ enum gdma_pd_flags { - GDMA_PD_FLAG_INVALID = 0, - GDMA_PD_FLAG_ALLOW_GPA_MR = 1, + GDMA_PD_FLAG_ALLOW_GPA_MR = BIT(0), + GDMA_PD_FLAG_SHORT_PDN = BIT(2), }; struct gdma_create_pd_req { diff --git a/include/uapi/rdma/mana-abi.h b/include/uapi/rdma/mana-abi.h index a75bf32b8..88b24ae50 100644 --- a/include/uapi/rdma/mana-abi.h +++ b/include/uapi/rdma/mana-abi.h @@ -87,4 +87,18 @@ struct mana_ib_create_qp_rss_resp { struct rss_resp_entry entries[64]; }; +enum mana_ib_create_pd_flags { + MANA_IB_PD_SHORT_PDN = 1 << 0, +}; + +struct mana_ib_alloc_pd { + __u32 flags; + __u32 reserved; +}; + +struct mana_ib_alloc_pd_resp { + __u32 pdn; + __u32 reserved; +}; + #endif -- 2.43.0