Date: Sat, 12 Sep 2009 18:55:15 +0000 (UTC) From: Bruce M Simpson <bms@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/netinet in_mcast.c Message-ID: <200909121855.n8CItQbs065981@repoman.freebsd.org>
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bms 2009-09-12 18:55:15 UTC FreeBSD src repository Modified files: sys/netinet in_mcast.c Log: SVN rev 197129 on 2009-09-12 18:55:15Z by bms Fix an API issue in leave processing for IPv4 multicast groups. * Do not assume that the group lookup performed by imo_match_group() is valid when ifp is NULL in this case. * Instead, return EADDRNOTAVAIL if the ifp cannot be resolved for the membership we are being asked to leave. Caveat user: * The way IPv4 multicast memberships are implemented in the inpcb layer at the moment, has the side-effect that struct ip_moptions will still hold the membership, under the old ifp, until ip_freemoptions() is called for the parent inpcb. * The underlying issue is: the inpcb layer does not get notification of ifp being detached going away in a thread-safe manner. This is non-trivial to fix. But hey, at least the kernel should't panic when you unplug a card. PR: 138689 Submitted by: Stef Walter MFC after: 5 days Revision Changes Path 1.29 +3 -0 src/sys/netinet/in_mcast.c
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