From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f180.google.com (mail-wi0-f180.google.com [209.85.212.180]) by dpdk.org (Postfix) with ESMTP id A2638593A for ; Thu, 22 May 2014 17:33:18 +0200 (CEST) Received: by mail-wi0-f180.google.com with SMTP id hi2so4569651wib.13 for ; Thu, 22 May 2014 08:33:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:organization :user-agent:in-reply-to:references:mime-version :content-transfer-encoding:content-type; bh=ps1RZ6jV/uFF2R3SYU3kADDjQ1V5+zHCiAalP3X5+68=; b=DYLKdDHRNzYK3v0jfYE1QiXbMopQ+JO3t6QIEAL34pN39Z4ax1zu28iMBscLF6UDLP gQydj0ObcJFXPcihKcOmqCAulFBpu5j6lSQqByVs3NSXFVvudYZoG4rHrMb5LPYZCKy6 VfxHZMvYlm5/CGbGGb9jwJKwFD9T20rrMV8N4kLDpiE0wBFth0sQcB8P1sIpZGyv8LN8 fbM9EpZw2AFqzXq056O1OV+eHEw4lz0CIJvlyN/BCdBLxK9vUooSstWqv5z53wQJtTRF zvs/lBF2E6m1dTkpLw50j3OW1JBgOteiBhauuGW05Cok/NM+5NKLWIMza9gEidrYyAET iqXw== X-Gm-Message-State: ALoCoQnXpUuzFQMHVKyPexCDLLJlZsoinfsUleAoibSzJ8Y8GY+A2rX9DMNa+mGriG7TqkrBRtyz X-Received: by 10.194.186.210 with SMTP id fm18mr3294489wjc.67.1400772808409; Thu, 22 May 2014 08:33:28 -0700 (PDT) Received: from xps13.localnet (6wind.net2.nerim.net. [213.41.180.237]) by mx.google.com with ESMTPSA id wl6sm198889wjc.6.2014.05.22.08.33.27 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 22 May 2014 08:33:27 -0700 (PDT) From: Thomas Monjalon To: Konstantin Ananyev Date: Thu, 22 May 2014 17:33:24 +0200 Message-ID: <5718347.PM9M73rWQt@xps13> Organization: 6WIND User-Agent: KMail/4.13 (Linux/3.14.4-1-ARCH; KDE/4.13.0; x86_64; ; ) In-Reply-To: <1399373316-11369-1-git-send-email-konstantin.ananyev@intel.com> References: <1399373316-11369-1-git-send-email-konstantin.ananyev@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Cc: dev@dpdk.org Subject: Re: [dpdk-dev] [PATCH] fix for jumbo frame issue with DPDK VF X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 May 2014 15:33:18 -0000 Hi Konstantin, 2014-05-06 11:48, Konstantin Ananyev: > When latest Linux ixgbe PF is used, and DPDK VF is used in DPDK application, > jumbo frames are not received. > Also - if Linux ixgbe PF has MTU set to 1500 (default), > then normal sized packets can be received by DPDK VF. > However, if Linux PF has MTU > 1500, then DPDK VF receives no packets > (normal or jumbo). > With ixgbe_mbox_api_10 ixgbe simply didn't allow set VF MTU > 1514 for > 82599. With ixgbe_mbox_ajpi_11 it does, though now, if PF uses jumbo > frames, it simply disables RX for all VFs. > So to work with PF ithat using jumbo frames, at startup each VF has to: > 1. negotiate with PF mbox_api_11. > 2. Send to PF SET_LPE message with desired MTU. > Note, that if PF already uses MTU bigger then asked by the VF, > then PF wouldn't take any action. You forgot "Signed-off-by:" line. Please resend. -- Thomas