From patchwork Tue May 24 08:56:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Long Li X-Patchwork-Id: 12859860 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 AF5BAC4321E for ; Tue, 24 May 2022 08:56:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234271AbiEXI4n (ORCPT ); Tue, 24 May 2022 04:56:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60220 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234162AbiEXI4f (ORCPT ); Tue, 24 May 2022 04:56:35 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E02C472E13; Tue, 24 May 2022 01:56:34 -0700 (PDT) Received: by linux.microsoft.com (Postfix, from userid 1004) id 67F4C20B895B; Tue, 24 May 2022 01:56:34 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 67F4C20B895B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxonhyperv.com; s=default; t=1653382594; bh=PF349BUmF5p16XW5kYSWvSk7Bx8DBpVgfKPFMDHpoY0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:Reply-To:From; b=HJHy17ANGa13JSE2qdkuicOplki+SaqhIQdaRJkUj2afvG5cFitzXZdjmXvOHZ00V ywfvb1/1QA+mBs93LCosasLPeUZzKc+T68ch8vfxq+xpdFvFB+R2+RqQkcYH72Wfyl Q9wy8YbWK/wfeF0Z7DxTOMehIgA/tXR8wgyi4rKg= 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 , Ajay Sharma Cc: linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Long Li Subject: [Patch v2 11/12] net: mana: Define and process GDMA response code GDMA_STATUS_MORE_ENTRIES Date: Tue, 24 May 2022 01:56:11 -0700 Message-Id: <1653382572-14788-12-git-send-email-longli@linuxonhyperv.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1653382572-14788-1-git-send-email-longli@linuxonhyperv.com> References: <1653382572-14788-1-git-send-email-longli@linuxonhyperv.com> Reply-To: longli@microsoft.com Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Ajay Sharma 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: Ajay Sharma Signed-off-by: Long Li --- drivers/net/ethernet/microsoft/mana/hw_channel.c | 2 +- include/net/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 e61cb3f6fbe1..24ecd193a185 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/net/mana/gdma.h b/include/net/mana/gdma.h index d6a970118f4c..d40f1dffca5c 100644 --- a/include/net/mana/gdma.h +++ b/include/net/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. */