From owner-svn-src-head@freebsd.org Sat Aug 1 09:40:20 2020 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 1A065375674; Sat, 1 Aug 2020 09:40:20 +0000 (UTC) (envelope-from mw@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BJfJg6spHz47R8; Sat, 1 Aug 2020 09:40:19 +0000 (UTC) (envelope-from mw@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 mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id CF90010D0A; Sat, 1 Aug 2020 09:40:19 +0000 (UTC) (envelope-from mw@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 0719eJj1057884; Sat, 1 Aug 2020 09:40:19 GMT (envelope-from mw@FreeBSD.org) Received: (from mw@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 0719eJM0057883; Sat, 1 Aug 2020 09:40:19 GMT (envelope-from mw@FreeBSD.org) Message-Id: <202008010940.0719eJM0057883@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mw set sender to mw@FreeBSD.org using -f From: Marcin Wojtas Date: Sat, 1 Aug 2020 09:40:19 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r363759 - head/sys/dev/neta X-SVN-Group: head X-SVN-Commit-Author: mw X-SVN-Commit-Paths: head/sys/dev/neta X-SVN-Commit-Revision: 363759 X-SVN-Commit-Repository: base 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: 2.1.33 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: Sat, 01 Aug 2020 09:40:20 -0000 Author: mw Date: Sat Aug 1 09:40:19 2020 New Revision: 363759 URL: https://svnweb.freebsd.org/changeset/base/363759 Log: Fix TX csum handling in if_mvneta The mvneta device requires MVNETA_TX_CMD_L4_CHECKSUM_NONE bit to be set in the tx descriptor is checksum not required. However, mvneta_tx_set_csumflag() is not setting this flag currently, causing the hardware to randomly corrupt IP header during transmission. This affects injected IPv4 packets that skips kernel IP stack processing (e.g. DHCP), as well as all IPv6 packets, since the driver currently does not offload csum for IPv6. The fix is to remove all the early return paths from mvneta_tx_set_csumflag() which do not set the MVNETA_TX_CMD_L4_CHECKSUM_NONE flag. PR: 248306 Submitted by: Mike Cui Reported by: Mike Cui Modified: head/sys/dev/neta/if_mvneta.c Modified: head/sys/dev/neta/if_mvneta.c ============================================================================== --- head/sys/dev/neta/if_mvneta.c Sat Aug 1 09:06:16 2020 (r363758) +++ head/sys/dev/neta/if_mvneta.c Sat Aug 1 09:40:19 2020 (r363759) @@ -2828,18 +2828,15 @@ mvneta_tx_set_csumflag(struct ifnet *ifp, csum_flags = ifp->if_hwassist & m->m_pkthdr.csum_flags; eh = mtod(m, struct ether_header *); - if (csum_flags == 0) - return; - switch (ntohs(eh->ether_type)) { case ETHERTYPE_IP: ipoff = ETHER_HDR_LEN; break; - case ETHERTYPE_IPV6: - return; case ETHERTYPE_VLAN: ipoff = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; break; + default: + csum_flags = 0; } if (__predict_true(csum_flags & (CSUM_IP|CSUM_IP_TCP|CSUM_IP_UDP))) {