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/freebsd-10.2-release/sys/netinet/
H A Digmp.cdiff 130333 Fri Jun 11 03:42:37 MDT 2004 rwatson Lock down parallel router_info list for tracking multicast IGMP
versions of various routers seen:

- Introduce igmp_mtx.
- Protect global variable 'router_info_head' and list fields
in struct router_info with this mutex, as well as
igmp_timers_are_running.
- find_rti() asserts that the caller acquires igmp_mtx.
- Annotate a failure to check the return value of
MALLOC(..., M_NOWAIT).

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