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< * $FreeBSD: head/sys/netinet/igmp.c 128019 2004-04-07 20:46:16Z imp $
---
> * $FreeBSD: head/sys/netinet/igmp.c 130333 2004-06-11 03:42:37Z rwatson $
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> /*
> * igmp_mtx protects all mutable global variables in igmp.c, as well as
> * the data fields in struct router_info. In general, a router_info
> * structure will be valid as long as the referencing struct in_multi is
> * valid, so no reference counting is used. We allow unlocked reads of
> * router_info data when accessed via an in_multi read-only.
> */
> static struct mtx igmp_mtx;
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>
> /*
> * XXXRW: can we define these such that these can be made const? In any
> * case, these shouldn't be changed after igmp_init() and therefore don't
> * need locking.
> */
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>
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> mtx_init(&igmp_mtx, "igmp_mtx", NULL, MTX_DEF);
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> mtx_assert(&igmp_mtx, MA_OWNED);
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> /*
> * XXXRW: return value of malloc not checked, despite M_NOWAIT.
> */
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< rti = find_rti(ifp);
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> mtx_lock(&igmp_mtx);
> rti = find_rti(ifp);
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> mtx_unlock(&igmp_mtx);
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> mtx_lock(&igmp_mtx);
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> mtx_unlock(&igmp_mtx);
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> mtx_lock(&igmp_mtx);
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> mtx_unlock(&igmp_mtx);