From patchwork Sat Aug 10 19:19:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Selvin Xavier X-Patchwork-Id: 13759608 Received: from mail-oa1-f54.google.com (mail-oa1-f54.google.com [209.85.160.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 10C1113B5B9 for ; Sat, 10 Aug 2024 19:40:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.54 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723318819; cv=none; b=g4iWlpcRzgrduSmCkq8pnzekleCotse2mMfwvp/v+yQQKMBcUtRnNbbT2LlXP5pVbC5llU7j4Y/NQx9nuvLrE1jN9E5KyfKvEXV0WlAKxedqsukAZx7YLvY4laPCpISv42GSczn80LrCQaRUC4Mr89YTJX0M3sHnIlIiEhDeKCs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723318819; c=relaxed/simple; bh=TahX3B1Iuw1jEr2+u0UIDJab1OxyO54LI0+bMBFXKUU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=Mh0cNuUbNDWRSknkH5meK5cQr+h05b5A7E1qSz8o05GbXvHuCBGzgasPo2Z5U2Apg0CQ9TDliBZ0G9jBM93ZPBZr4WgXcB4IRlQ/kzKcfC+rdhTmzDN/StfL+BEX2ScGWY/+b6u3w7UJ2TPuvG/hRAcDBm9Eam7VNtOrIWyuON0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=broadcom.com; spf=fail smtp.mailfrom=broadcom.com; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b=fy2LBz+s; arc=none smtp.client-ip=209.85.160.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=broadcom.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=broadcom.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="fy2LBz+s" Received: by mail-oa1-f54.google.com with SMTP id 586e51a60fabf-264a12e05b9so2033872fac.1 for ; Sat, 10 Aug 2024 12:40:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1723318817; x=1723923617; darn=vger.kernel.org; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=+leSXdUbIYKI7LvY2C7MNiQQxTay47JkFU/iIQbOOFI=; b=fy2LBz+s0PN9vYeFxFI2zd7WtnKXF8K0KqZnEVfH3UAL9gbCC+4WDdZLDGWBavmEkU 8H1PJjobkuzvoeo5ZvQ5zwWBtY07Bv9V76Km1TKenrku9GuCH2rli1kc40OJaiBfV7lH /h1PJGllEW4+4WF+UxREx8cbTO9RKY8QymUXY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723318817; x=1723923617; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=+leSXdUbIYKI7LvY2C7MNiQQxTay47JkFU/iIQbOOFI=; b=kcR0MERVkOOmpoMnP9lcFkchLmVgJ6lZyQj8eRWOi2ZIQJ/yZg6CdVpQ+NIb/R1HHe 6hC3wAeRXA5rdyOEIjqa00KzigoT7+XPArOaJAQ/Glsj134vPHtrHwBo4o1cOM1iNmZ0 LDm1Sr6zMGkVIjLCdTerRzNnFgpRU01ZDz+bEXLRoDX5ohDXRYbYB/V8ohZeVAtKrve+ L/X4xLaHUppPzWHBxqNlwDghQSOirJXnpMI9n2VEEVeXFwMwzrIufFgjD+lpj/+CYx+u hRIJyrBWl16MXXVA0CMTcUmm1N1Ny2jciNSiEysDDy2iixHsagx98DvKZBgLj0x9G5ai Kf2A== X-Gm-Message-State: AOJu0YzYTMotgXeX3gfOKx4M1eXrkFG1Y3pbhRzMNikCwJmWgBxT4Mhi TVrriMqiQtiUY3jARR0LMqvsVlvV8N1+yMT0zN1AcU1Ot4/gmN09TjHvkt77cg== X-Google-Smtp-Source: AGHT+IE2xWOx8Mm0nuo5KmoTkY5k/hp3vR+B9dpKvTO7aWb+BaZE9co31/4twlsFnOcS3t/DLF6aiQ== X-Received: by 2002:a05:6870:7b4a:b0:260:f7e7:65e with SMTP id 586e51a60fabf-26c62f871b7mr6869289fac.45.1723318817135; Sat, 10 Aug 2024 12:40:17 -0700 (PDT) Received: from sxavier-dev.dhcp.broadcom.net ([42.104.124.121]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-710e5a437b7sm1541513b3a.128.2024.08.10.12.40.14 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 10 Aug 2024 12:40:16 -0700 (PDT) From: Selvin Xavier To: leon@kernel.org, jgg@ziepe.ca Cc: linux-rdma@vger.kernel.org, andrew.gospodarek@broadcom.com, Selvin Xavier , Hongguang Gao Subject: [PATCH for-next 4/4] RDMA/bnxt_re: Enable variable size WQEs for user space applications Date: Sat, 10 Aug 2024 12:19:13 -0700 Message-Id: <1723317553-13002-5-git-send-email-selvin.xavier@broadcom.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1723317553-13002-1-git-send-email-selvin.xavier@broadcom.com> References: <1723317553-13002-1-git-send-email-selvin.xavier@broadcom.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Add backward compatibility code to enable variable size WQEs only if the user lib supports it. Signed-off-by: Hongguang Gao Signed-off-by: Selvin Xavier --- drivers/infiniband/hw/bnxt_re/ib_verbs.c | 5 +++++ include/uapi/rdma/bnxt_re-abi.h | 1 + 2 files changed, 6 insertions(+) diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c index 2932db1..82444fd 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -4233,6 +4233,11 @@ int bnxt_re_alloc_ucontext(struct ib_ucontext *ctx, struct ib_udata *udata) resp.comp_mask |= BNXT_RE_UCNTX_CMASK_POW2_DISABLED; uctx->cmask |= BNXT_RE_UCNTX_CAP_POW2_DISABLED; } + if (ureq.comp_mask & BNXT_RE_COMP_MASK_REQ_UCNTX_VAR_WQE_SUPPORT) { + resp.comp_mask |= BNXT_RE_UCNTX_CMASK_HAVE_MODE; + resp.mode = rdev->chip_ctx->modes.wqe_mode; + uctx->cmask |= BNXT_RE_UCNTX_CAP_VAR_WQE_ENABLED; + } } rc = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp))); diff --git a/include/uapi/rdma/bnxt_re-abi.h b/include/uapi/rdma/bnxt_re-abi.h index 7114061..6821002 100644 --- a/include/uapi/rdma/bnxt_re-abi.h +++ b/include/uapi/rdma/bnxt_re-abi.h @@ -66,6 +66,7 @@ enum bnxt_re_wqe_mode { enum { BNXT_RE_COMP_MASK_REQ_UCNTX_POW2_SUPPORT = 0x01, + BNXT_RE_COMP_MASK_REQ_UCNTX_VAR_WQE_SUPPORT = 0x02, }; struct bnxt_re_uctx_req {