From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BCEE5C47256 for ; Tue, 5 May 2020 05:20:12 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8E76B206FA for ; Tue, 5 May 2020 05:20:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="JIIEDEh/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8E76B206FA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=grimberg.me Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Lz0DoYgt6X8MmG4YEeHh2F4Q7gGJVoAT7VmRzKR/BX8=; b=JIIEDEh/4853f/ MCQZ6+lzRacHR2EnFYAFgbM+2VaxtrXkm4r6oE+PeWflJyW8GicN3CDBU6UWobOfBq1AIId3r3X1O EwNLSiKkIL2xQlhdoNEqvQyh1ThEhaOIJJJBm5guIxRhd+0sl8vFnqn9FRTFggnmiB/tTXai2txJa ICU4sql2lDJ4B1vE8si1DiQZgEpmhi22qKizY5qtKbm6QOgwGcQChaiKW1ql+PofVSCe5QXZ4E9Ar 6iN0fiOblwlTXIZd8T65Op4hS0BotENaXyYFuIddf1kv8G45mCd0ZDzJf3la5Ckf5qUyheT8ILeVN UblEDjvU6v9VDsrai1fw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jVpzy-0001RI-El; Tue, 05 May 2020 05:20:06 +0000 Received: from [2601:647:4802:9070:b8cc:5255:a224:4d8b] (helo=bombadil.infradead.org) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jVpzw-0000uV-En; Tue, 05 May 2020 05:20:04 +0000 From: Sagi Grimberg To: linux-nvme@lists.infradead.org, Christoph Hellwig , Keith Busch Subject: [PATCH 1/2] nvme-tcp: set MSG_SENDPAGE_NOTLAST with MSG_MORE when we have more to send Date: Mon, 4 May 2020 22:20:01 -0700 Message-Id: <20200505052002.14924-1-sagi@grimberg.me> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anil Vasudevan , Mark Wunderlich Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org We can signal the stack that this is not the last page coming and the stack can build a larger tso segment, so go ahead and use it. Signed-off-by: Sagi Grimberg --- drivers/nvme/host/tcp.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c index c79e248b9f43..7c7c1886642f 100644 --- a/drivers/nvme/host/tcp.c +++ b/drivers/nvme/host/tcp.c @@ -885,7 +885,7 @@ static int nvme_tcp_try_send_data(struct nvme_tcp_request *req) if (last && !queue->data_digest) flags |= MSG_EOR; else - flags |= MSG_MORE; + flags |= MSG_MORE | MSG_SENDPAGE_NOTLAST; /* can't zcopy slab pages */ if (unlikely(PageSlab(page))) { @@ -924,11 +924,16 @@ static int nvme_tcp_try_send_cmd_pdu(struct nvme_tcp_request *req) struct nvme_tcp_queue *queue = req->queue; struct nvme_tcp_cmd_pdu *pdu = req->pdu; bool inline_data = nvme_tcp_has_inline_data(req); - int flags = MSG_DONTWAIT | (inline_data ? MSG_MORE : MSG_EOR); u8 hdgst = nvme_tcp_hdgst_len(queue); int len = sizeof(*pdu) + hdgst - req->offset; + int flags = MSG_DONTWAIT; int ret; + if (inline_data) + flags |= MSG_MORE | MSG_SENDPAGE_NOTLAST; + else + flags |= MSG_EOR; + if (queue->hdr_digest && !req->offset) nvme_tcp_hdgst(queue->snd_hash, pdu, sizeof(*pdu)); @@ -967,7 +972,7 @@ static int nvme_tcp_try_send_data_pdu(struct nvme_tcp_request *req) ret = kernel_sendpage(queue->sock, virt_to_page(pdu), offset_in_page(pdu) + req->offset, len, - MSG_DONTWAIT | MSG_MORE); + MSG_DONTWAIT | MSG_MORE | MSG_SENDPAGE_NOTLAST); if (unlikely(ret <= 0)) return ret; -- 2.20.1 _______________________________________________ linux-nvme mailing list linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme