Date: Wed, 17 Jun 2015 07:29:36 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 7802] [MFC] outbound, fragmented multicast packets are mishandled at the data-link layer Message-ID: <bug-7802-8-h8KP3cDu6d@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-7802-8@https.bugs.freebsd.org/bugzilla/> References: <bug-7802-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=7802 --- Comment #5 from commit-hook@freebsd.org --- A commit references this bug: Author: hselasky Date: Wed Jun 17 07:28:51 UTC 2015 New revision: 284497 URL: https://svnweb.freebsd.org/changeset/base/284497 Log: MFC r280991: Extend fixes made in r278103 and r38754 by copying the complete packet header and not only partial flags and fields. Firewalls can attach classification tags to the outgoing mbufs which should be copied to all the new fragments. Else only the first fragment will be let through by the firewall. This can easily be tested by sending a large ping packet through a firewall. It was also discovered that VLAN related flags and fields should be copied for packets traversing through VLANs. This is all handled by "m_dup_pkthdr()". Regarding the MAC policy check in ip_fragment(), the tag provided by the originating mbuf is copied instead of using the default one provided by m_gethdr(). Tested by: Karim Fodil-Lemelin <fodillemlinkarim at gmail.com> Sponsored by: Mellanox Technologies PR: 7802 Changes: _U stable/9/sys/ stable/9/sys/netinet/ip_output.c -- You are receiving this mail because: You are the assignee for the bug.
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