From owner-svn-src-head@freebsd.org Tue Jan 24 09:15:38 2017 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3D16BCBD229; Tue, 24 Jan 2017 09:15:38 +0000 (UTC) (envelope-from dexuan@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 0CA231C68; Tue, 24 Jan 2017 09:15:37 +0000 (UTC) (envelope-from dexuan@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v0O9FbPB020816; Tue, 24 Jan 2017 09:15:37 GMT (envelope-from dexuan@FreeBSD.org) Received: (from dexuan@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id v0O9FbDl020815; Tue, 24 Jan 2017 09:15:37 GMT (envelope-from dexuan@FreeBSD.org) Message-Id: <201701240915.v0O9FbDl020815@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: dexuan set sender to dexuan@FreeBSD.org using -f From: Dexuan Cui Date: Tue, 24 Jan 2017 09:15:37 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r312686 - head/sys/dev/hyperv/netvsc X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 Jan 2017 09:15:38 -0000 Author: dexuan Date: Tue Jan 24 09:15:36 2017 New Revision: 312686 URL: https://svnweb.freebsd.org/changeset/base/312686 Log: hyperv/hn: remove the MTU and IFF_DRV_RUNNING checking in hn_rxpkt() It's unnecessary because the upper nework stack does the same checking. In the case of Hyper-V SR-IOV, we need to remove the checking because 1) multicast/broadcast packets are still received through the synthetic NIC and we need to inject the packets through the VF interface; 2) we must inject the packets even if the synthetic NIC is down, or has a different MTU from the VF device. Reviewed by: sephe Approved by: sephe (mentor) MFC after: 2 weeks Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D8962 Modified: head/sys/dev/hyperv/netvsc/if_hn.c Modified: head/sys/dev/hyperv/netvsc/if_hn.c ============================================================================== --- head/sys/dev/hyperv/netvsc/if_hn.c Tue Jan 24 09:09:53 2017 (r312685) +++ head/sys/dev/hyperv/netvsc/if_hn.c Tue Jan 24 09:15:36 2017 (r312686) @@ -2129,15 +2129,7 @@ hn_rxpkt(struct hn_rx_ring *rxr, const v int size, do_lro = 0, do_csum = 1; int hash_type; - if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) - return (0); - - /* - * Bail out if packet contains more data than configured MTU. - */ - if (dlen > (ifp->if_mtu + ETHER_HDR_LEN)) { - return (0); - } else if (dlen <= MHLEN) { + if (dlen <= MHLEN) { m_new = m_gethdr(M_NOWAIT, MT_DATA); if (m_new == NULL) { if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);