From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from out4-smtp.messagingengine.com (out4-smtp.messagingengine.com [66.111.4.28]) by dpdk.org (Postfix) with ESMTP id 8178F5951 for ; Mon, 1 May 2017 22:33:23 +0200 (CEST) Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.nyi.internal (Postfix) with ESMTP id 2C8E920B4F; Mon, 1 May 2017 16:33:23 -0400 (EDT) Received: from frontend2 ([10.202.2.161]) by compute1.internal (MEProxy); Mon, 01 May 2017 16:33:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=monjalon.net; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-sender :x-me-sender:x-sasl-enc:x-sasl-enc; s=mesmtp; bh=QcLUS77FsaMVRIC cFVIGTBsuq3Q9ztw5L1/K2P2ZvCM=; b=ivFAS4cBq6egvxa1o6V17YCg3k3Uj4l aWGkbj2r+yPu1c798C9HTs8bB8IYhmnvbSRIBoBR84OdjluZyTlTJolbjhIOcUn/ 42EJk1HjY8DqEy/kw+QQdar/bU7fmtFVUxCK4lW9967AvhIr1r/veIc03JvY1BfD i9TZXzqwXNCU= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-sender:x-me-sender:x-sasl-enc:x-sasl-enc; s= fm1; bh=QcLUS77FsaMVRICcFVIGTBsuq3Q9ztw5L1/K2P2ZvCM=; b=Q8vj9wTW i6ZiqQVXcan9kEgi6Zz0yeWlhiakbf8HThgZcvojdK6VvfoSFC5GZ5WDHiSVCBgG SHvC8LxN/NsgYZpRuQo0N9WHw1alA6kGUoqaF1Is+ny+OUOEk7gRsiCNraITXGTy kb5oMXvda6CewmVMQSwAuHpBpLGw8Ovr8btieml6xlXvENmxjcISv3t+fpmxkCVZ DUpFy1oo/bdpHFmr6OVfYygQB8c847la1N6eUaAOfnrAAWOV8UvQzcjnAIEEDjIS 9UUm1hmjVvwZsF8h8oYDAT+Y82lha1arSyi9tK2cEDx+jsRR4GLDIg6SHDo9k0U0 +NEOdTV6o/9vUQ== X-ME-Sender: X-Sasl-enc: tfhr31DVVddKJWtpFwKmRPrVdM8N0kSwFweAE808Gzvy 1493670802 Received: from xps.localnet (184.203.134.77.rev.sfr.net [77.134.203.184]) by mail.messagingengine.com (Postfix) with ESMTPA id DA7A4248A4; Mon, 1 May 2017 16:33:22 -0400 (EDT) From: Thomas Monjalon To: Pascal Mazon Cc: dev@dpdk.org Date: Mon, 01 May 2017 22:33:22 +0200 Message-ID: <1615470.AxTd9VR4jW@xps> In-Reply-To: <185dca03cb8d8665feef0adcfbe36e51529c4563.1493301089.git.pascal.mazon@6wind.com> References: <185dca03cb8d8665feef0adcfbe36e51529c4563.1493301089.git.pascal.mazon@6wind.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Subject: Re: [dpdk-dev] [PATCH] net/tap: fix support for large Rx queues X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 May 2017 20:33:23 -0000 27/04/2017 15:51, Pascal Mazon: > Rx queues configured with more than 1023 descriptors cause readv() calls to > fail due to more iovec entries than permitted by the kernel. As a result, > no packets can be received. > > Quietly limit internal Rx queue size to the maximum number of iovec entries > to fix this issue. > > Fixes: 0781f5762cfe ("net/tap: support segmented mbufs") > > Signed-off-by: Pascal Mazon Applied, thanks