From owner-svn-src-all@freebsd.org Fri May 10 20:15:41 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id B300615852C7; Fri, 10 May 2019 20:15:41 +0000 (UTC) (envelope-from jhb@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) server-signature RSA-PSS (4096 bits) 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 5881889B85; Fri, 10 May 2019 20:15:41 +0000 (UTC) (envelope-from jhb@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 2CAFB93A3; Fri, 10 May 2019 20:15:41 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x4AKFfCR099407; Fri, 10 May 2019 20:15:41 GMT (envelope-from jhb@FreeBSD.org) Received: (from jhb@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x4AKFfJl099406; Fri, 10 May 2019 20:15:41 GMT (envelope-from jhb@FreeBSD.org) Message-Id: <201905102015.x4AKFfJl099406@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhb set sender to jhb@FreeBSD.org using -f From: John Baldwin Date: Fri, 10 May 2019 20:15:40 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r347465 - head/sys/netinet6 X-SVN-Group: head X-SVN-Commit-Author: jhb X-SVN-Commit-Paths: head/sys/netinet6 X-SVN-Commit-Revision: 347465 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 5881889B85 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.995,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.95)[-0.953,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 May 2019 20:15:41 -0000 Author: jhb Date: Fri May 10 20:15:40 2019 New Revision: 347465 URL: https://svnweb.freebsd.org/changeset/base/347465 Log: Apply r280991 to ip6_fragment. This uses m_dup_pkthdr() to copy all of the metadata about a packet to each of its fragments including VLAN tags, mbuf tags, etc. instead of hand-copying a few fields. Reviewed by: bz MFC after: 1 month Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D20117 Modified: head/sys/netinet6/ip6_output.c Modified: head/sys/netinet6/ip6_output.c ============================================================================== --- head/sys/netinet6/ip6_output.c Fri May 10 19:55:29 2019 (r347464) +++ head/sys/netinet6/ip6_output.c Fri May 10 20:15:40 2019 (r347465) @@ -228,7 +228,20 @@ ip6_fragment(struct ifnet *ifp, struct mbuf *m0, int h IP6STAT_INC(ip6s_odropped); return (ENOBUFS); } - m->m_flags = m0->m_flags & M_COPYFLAGS; + + /* + * Make sure the complete packet header gets copied + * from the originating mbuf to the newly created + * mbuf. This also ensures that existing firewall + * classification(s), VLAN tags and so on get copied + * to the resulting fragmented packet(s): + */ + if (m_dup_pkthdr(m, m0, M_NOWAIT) == 0) { + m_free(m); + IP6STAT_INC(ip6s_odropped); + return (ENOBUFS); + } + *mnext = m; mnext = &m->m_nextpkt; m->m_data += max_linkhdr; @@ -253,8 +266,6 @@ ip6_fragment(struct ifnet *ifp, struct mbuf *m0, int h } m_cat(m, m_frgpart); m->m_pkthdr.len = fraglen + hlen + sizeof(*ip6f); - m->m_pkthdr.fibnum = m0->m_pkthdr.fibnum; - m->m_pkthdr.rcvif = NULL; ip6f->ip6f_reserved = 0; ip6f->ip6f_ident = id; ip6f->ip6f_nxt = nextproto;