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Fri, 19 Apr 2019 18:09:38 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <201904191809.x3JI9chr051690@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r346406 - head/sys/netinet6 X-SVN-Group: head X-SVN-Commit-Author: tuexen X-SVN-Commit-Paths: head/sys/netinet6 X-SVN-Commit-Revision: 346406 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk X-Loop: FreeBSD.org Sender: owner-src-committers@freebsd.org X-Rspamd-Queue-Id: 437AB8AC35 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.93 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.93)[-0.927,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] Status: O X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Date: Tue, 03 Sep 2019 14:07:31 -0000 X-Original-Date: Fri, 19 Apr 2019 18:09:38 +0000 (UTC) X-List-Received-Date: Tue, 03 Sep 2019 14:07:31 -0000 Author: tuexen Date: Fri Apr 19 18:09:37 2019 New Revision: 346406 URL: https://svnweb.freebsd.org/changeset/base/346406 Log: When an IPv6 packet is received for a raw socket which has the IPPROTO_IPV6 level socket option IPV6_CHECKSUM enabled and the checksum check fails, drop the message. Without this fix, an ICMP6 message was sent indicating a parameter problem. Thanks to bz@ for suggesting a way to simplify this fix. Reviewed by: bz@ MFC after: 1 week Sponsored by: Netflix, Inc. Differential Revision: https://reviews.freebsd.org/D19969 Modified: head/sys/netinet6/raw_ip6.c Modified: head/sys/netinet6/raw_ip6.c ============================================================================== --- head/sys/netinet6/raw_ip6.c Fri Apr 19 18:00:33 2019 (r346405) +++ head/sys/netinet6/raw_ip6.c Fri Apr 19 18:09:37 2019 (r346406) @@ -243,6 +243,12 @@ rip6_input(struct mbuf **mp, int *offp, int proto) in6_cksum(m, proto, *offp, m->m_pkthdr.len - *offp)) { RIP6STAT_INC(rip6s_badsum); + /* + * Drop the received message, don't send an + * ICMP6 message. Set proto to IPPROTO_NONE + * to achieve that. + */ + proto = IPPROTO_NONE; goto skip_2; } }