From patchwork Tue May 17 09:04:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Long Li X-Patchwork-Id: 12852162 X-Patchwork-Delegate: jgg@ziepe.ca 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 4C923C433F5 for ; Tue, 17 May 2022 09:05:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244238AbiEQJFI (ORCPT ); Tue, 17 May 2022 05:05:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52564 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244028AbiEQJEy (ORCPT ); Tue, 17 May 2022 05:04:54 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 3BDC448E75; Tue, 17 May 2022 02:04:54 -0700 (PDT) Received: by linux.microsoft.com (Postfix, from userid 1004) id 23D9020F7230; Tue, 17 May 2022 02:04:54 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 23D9020F7230 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxonhyperv.com; s=default; t=1652778294; bh=6RZGGvFWrSGpPbswEMH8aRsp+dxd1M1jw+kx4KN2h5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:Reply-To:From; b=ffSoI6UcZSsVkTrcMBtafR/4BW8d2IJSV1qpmR/cVAyh8+XyqnustFWw3s102uobi 9vn163S4vzn/da5NOz55QBGKgS+DuMgznMryri5Dr8dallaGRZWRSmeYYoE7gPcEpJ vhoJWRmHcz3dEYDB6MZ+DB/H+bROUQssHS3i24OM= From: longli@linuxonhyperv.com To: "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Dexuan Cui , "David S. Miller" , Jakub Kicinski , Paolo Abeni , Jason Gunthorpe , Leon Romanovsky Cc: linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Long Li Subject: [PATCH 11/12] net: mana: Define and process GDMA response code GDMA_STATUS_MORE_ENTRIES Date: Tue, 17 May 2022 02:04:35 -0700 Message-Id: <1652778276-2986-12-git-send-email-longli@linuxonhyperv.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1652778276-2986-1-git-send-email-longli@linuxonhyperv.com> References: <1652778276-2986-1-git-send-email-longli@linuxonhyperv.com> Reply-To: longli@microsoft.com Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Long Li When doing memory registration, the PF may respond with GDMA_STATUS_MORE_ENTRIES to indicate a follow request is needed. This is not an error and should be processed as expected. Signed-off-by: Long Li --- drivers/net/ethernet/microsoft/mana/hw_channel.c | 2 +- include/linux/mana/gdma.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/microsoft/mana/hw_channel.c b/drivers/net/ethernet/microsoft/mana/hw_channel.c index 609cd714dcc0..a80c14676c75 100644 --- a/drivers/net/ethernet/microsoft/mana/hw_channel.c +++ b/drivers/net/ethernet/microsoft/mana/hw_channel.c @@ -820,7 +820,7 @@ int mana_hwc_send_request(struct hw_channel_context *hwc, u32 req_len, goto out; } - if (ctx->status_code) { + if (ctx->status_code && ctx->status_code != GDMA_STATUS_MORE_ENTRIES) { dev_err(hwc->dev, "HWC: Failed hw_channel req: 0x%x\n", ctx->status_code); err = -EPROTO; diff --git a/include/linux/mana/gdma.h b/include/linux/mana/gdma.h index d6a970118f4c..d40f1dffca5c 100644 --- a/include/linux/mana/gdma.h +++ b/include/linux/mana/gdma.h @@ -9,6 +9,8 @@ #include "shm_channel.h" +#define GDMA_STATUS_MORE_ENTRIES ((u32)0x00000105L) + /* Structures labeled with "HW DATA" are exchanged with the hardware. All of * them are naturally aligned and hence don't need __packed. */