From patchwork Tue Aug 22 15:47:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: sharmaajay@linuxonhyperv.com X-Patchwork-Id: 13361107 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2A34EEE49AA for ; Tue, 22 Aug 2023 15:47:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237315AbjHVPrt (ORCPT ); Tue, 22 Aug 2023 11:47:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48738 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237306AbjHVPrs (ORCPT ); Tue, 22 Aug 2023 11:47:48 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 325B4CDD; Tue, 22 Aug 2023 08:47:46 -0700 (PDT) Received: by linux.microsoft.com (Postfix, from userid 1174) id B72392126CC8; Tue, 22 Aug 2023 08:47:45 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com B72392126CC8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxonhyperv.com; s=default; t=1692719265; bh=Ur4s42GMyhFhDgjdtd8dbqhqbn8vESDXXPu5a9l4KTQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bkN1XjbPqBqy8v7cSWpDWhGhvqbtggWtgzIbpV+kXg/WpNQ3luqAqVfrw68urN+Fs ChE1KTsVk7gR0pWeXVVcI78rAX6F70cf1fx9FquItdEylhoJ20vZR1MHsFdRysU39J oORGEm3UE6LUa2zV70WrwVYaRh+hvubcP23RP4j4= From: sharmaajay@linuxonhyperv.com To: Long Li , Jason Gunthorpe , Leon Romanovsky , Dexuan Cui , Wei Liu , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: linux-rdma@vger.kernel.org, linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Ajay Sharma Subject: [Patch v4 4/4] RDMA/mana_ib : Query adapter capabilities Date: Tue, 22 Aug 2023 08:47:35 -0700 Message-Id: <1692719255-20183-5-git-send-email-sharmaajay@linuxonhyperv.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1692719255-20183-1-git-send-email-sharmaajay@linuxonhyperv.com> References: <1692719255-20183-1-git-send-email-sharmaajay@linuxonhyperv.com> Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Ajay Sharma Query the adapter capabilities to expose to other clients and VF. This checks against the user supplied values and protects against overflows. Signed-off-by: Ajay Sharma --- drivers/infiniband/hw/mana/device.c | 4 ++ drivers/infiniband/hw/mana/main.c | 67 ++++++++++++++++++++++------ drivers/infiniband/hw/mana/mana_ib.h | 53 +++++++++++++++++++++- 3 files changed, 110 insertions(+), 14 deletions(-) diff --git a/drivers/infiniband/hw/mana/device.c b/drivers/infiniband/hw/mana/device.c index 4077e440657a..e15da43c73a0 100644 --- a/drivers/infiniband/hw/mana/device.c +++ b/drivers/infiniband/hw/mana/device.c @@ -97,6 +97,10 @@ static int mana_ib_probe(struct auxiliary_device *adev, goto free_error_eq; } + ret = mana_ib_query_adapter_caps(mib_dev); + if (ret) + ibdev_dbg(&mib_dev->ib_dev, "Failed to get caps, use defaults"); + ret = ib_register_device(&mib_dev->ib_dev, "mana_%d", mdev->gdma_context->dev); if (ret) diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c index 786c482f16cb..c167657bb63e 100644 --- a/drivers/infiniband/hw/mana/main.c +++ b/drivers/infiniband/hw/mana/main.c @@ -469,20 +469,15 @@ int mana_ib_get_port_immutable(struct ib_device *ibdev, u32 port_num, int mana_ib_query_device(struct ib_device *ibdev, struct ib_device_attr *props, struct ib_udata *uhw) { - props->max_qp = MANA_MAX_NUM_QUEUES; - props->max_qp_wr = MAX_SEND_BUFFERS_PER_QUEUE; + struct mana_ib_dev *mib_dev = container_of(ibdev, + struct mana_ib_dev, ib_dev); - /* - * max_cqe could be potentially much bigger. - * As this version of driver only support RAW QP, set it to the same - * value as max_qp_wr - */ - props->max_cqe = MAX_SEND_BUFFERS_PER_QUEUE; - - props->max_mr_size = MANA_IB_MAX_MR_SIZE; - props->max_mr = MANA_IB_MAX_MR; - props->max_send_sge = MAX_TX_WQE_SGL_ENTRIES; - props->max_recv_sge = MAX_RX_WQE_SGL_ENTRIES; + props->max_qp = mib_dev->adapter_caps.max_qp_count; + props->max_qp_wr = mib_dev->adapter_caps.max_requester_sq_size; + props->max_cqe = mib_dev->adapter_caps.max_requester_sq_size; + props->max_mr = mib_dev->adapter_caps.max_mr_count; + props->max_send_sge = mib_dev->adapter_caps.max_send_wqe_size; + props->max_recv_sge = mib_dev->adapter_caps.max_recv_wqe_size; return 0; } @@ -599,3 +594,49 @@ int mana_ib_create_error_eq(struct mana_ib_dev *mib_dev) return 0; } + +static void assign_caps(struct mana_ib_adapter_caps *caps, + struct mana_ib_query_adapter_caps_resp *resp) +{ + caps->max_sq_id = resp->max_sq_id; + caps->max_rq_id = resp->max_rq_id; + caps->max_cq_id = resp->max_cq_id; + caps->max_qp_count = resp->max_qp_count; + caps->max_cq_count = resp->max_cq_count; + caps->max_mr_count = resp->max_mr_count; + caps->max_pd_count = resp->max_pd_count; + caps->max_inbound_read_limit = resp->max_inbound_read_limit; + caps->max_outbound_read_limit = resp->max_outbound_read_limit; + caps->mw_count = resp->mw_count; + caps->max_srq_count = resp->max_srq_count; + caps->max_requester_sq_size = resp->max_requester_sq_size; + caps->max_responder_sq_size = resp->max_responder_sq_size; + caps->max_requester_rq_size = resp->max_requester_rq_size; + caps->max_responder_rq_size = resp->max_responder_rq_size; + caps->max_send_wqe_size = resp->max_send_wqe_size; + caps->max_recv_wqe_size = resp->max_recv_wqe_size; + caps->max_inline_data_size = resp->max_inline_data_size; +} + +int mana_ib_query_adapter_caps(struct mana_ib_dev *mib_dev) +{ + struct mana_ib_query_adapter_caps_resp resp = {}; + struct mana_ib_query_adapter_caps_req req = {}; + int err; + + mana_gd_init_req_hdr(&req.hdr, MANA_IB_GET_ADAPTER_CAP, sizeof(req), + sizeof(resp)); + req.hdr.resp.msg_version = MANA_IB_GET_ADAPTER_CAP_RESPONSE_V3; + req.hdr.dev_id = mib_dev->gc->mana_ib.dev_id; + + err = mana_gd_send_request(mib_dev->gc, sizeof(req), &req, + sizeof(resp), &resp); + + if (err) { + ibdev_err(&mib_dev->ib_dev, "Failed to query adapter caps err %d", err); + return err; + } + + assign_caps(&mib_dev->adapter_caps, &resp); + return 0; +} diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h index 8a652bccd978..6b9406738cb2 100644 --- a/drivers/infiniband/hw/mana/mana_ib.h +++ b/drivers/infiniband/hw/mana/mana_ib.h @@ -20,19 +20,41 @@ /* MANA doesn't have any limit for MR size */ #define MANA_IB_MAX_MR_SIZE U64_MAX - +#define MANA_IB_GET_ADAPTER_CAP_RESPONSE_V3 3 /* * The hardware limit of number of MRs is greater than maximum number of MRs * that can possibly represent in 24 bits */ #define MANA_IB_MAX_MR 0xFFFFFFu +struct mana_ib_adapter_caps { + u32 max_sq_id; + u32 max_rq_id; + u32 max_cq_id; + u32 max_qp_count; + u32 max_cq_count; + u32 max_mr_count; + u32 max_pd_count; + u32 max_inbound_read_limit; + u32 max_outbound_read_limit; + u32 mw_count; + u32 max_srq_count; + u32 max_requester_sq_size; + u32 max_responder_sq_size; + u32 max_requester_rq_size; + u32 max_responder_rq_size; + u32 max_send_wqe_size; + u32 max_recv_wqe_size; + u32 max_inline_data_size; +}; + struct mana_ib_dev { struct ib_device ib_dev; struct gdma_dev *gdma_dev; struct gdma_context *gc; struct gdma_queue *fatal_err_eq; mana_handle_t adapter_handle; + struct mana_ib_adapter_caps adapter_caps; }; struct mana_ib_wq { @@ -96,6 +118,7 @@ struct mana_ib_rwq_ind_table { }; enum mana_ib_command_code { + MANA_IB_GET_ADAPTER_CAP = 0x30001, MANA_IB_CREATE_ADAPTER = 0x30002, MANA_IB_DESTROY_ADAPTER = 0x30003, }; @@ -120,6 +143,32 @@ struct mana_ib_destroy_adapter_resp { struct gdma_resp_hdr hdr; }; /* HW Data */ +struct mana_ib_query_adapter_caps_req { + struct gdma_req_hdr hdr; +}; /*HW Data */ + +struct mana_ib_query_adapter_caps_resp { + struct gdma_resp_hdr hdr; + u32 max_sq_id; + u32 max_rq_id; + u32 max_cq_id; + u32 max_qp_count; + u32 max_cq_count; + u32 max_mr_count; + u32 max_pd_count; + u32 max_inbound_read_limit; + u32 max_outbound_read_limit; + u32 mw_count; + u32 max_srq_count; + u32 max_requester_sq_size; + u32 max_responder_sq_size; + u32 max_requester_rq_size; + u32 max_responder_rq_size; + u32 max_send_wqe_size; + u32 max_recv_wqe_size; + u32 max_inline_data_size; +}; /* HW Data */ + int mana_ib_gd_create_dma_region(struct mana_ib_dev *mib_dev, struct ib_umem *umem, mana_handle_t *gdma_region); @@ -194,4 +243,6 @@ int mana_ib_create_adapter(struct mana_ib_dev *mib_dev); int mana_ib_destroy_adapter(struct mana_ib_dev *mib_dev); +int mana_ib_query_adapter_caps(struct mana_ib_dev *mib_dev); + #endif