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avoid trying to acquire a shared lock while holding an exclusive lock

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by making the ifnet lock acquisition exclusive
This commit is contained in:
Kip Macy 2008-12-17 04:33:52 +00:00
parent 832fe6cbb7
commit c368cff776
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=186209
1 changed files with 4 additions and 4 deletions
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8
sys/net/if.c
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@ -197,9 +197,9 @@ ifnet_byindex(u_short idx)
INIT_VNET_NET(curvnet);
struct ifnet *ifp;
IFNET_RLOCK();
IFNET_WLOCK();
ifp = V_ifindex_table[idx].ife_ifnet;
IFNET_RUNLOCK();
IFNET_WUNLOCK();
return (ifp);
}
@ -218,9 +218,9 @@ ifaddr_byindex(u_short idx)
{
struct ifaddr *ifa;
IFNET_RLOCK();
IFNET_WLOCK();
ifa = ifnet_byindex(idx)->if_addr;
IFNET_RUNLOCK();
IFNET_WUNLOCK();
return (ifa);
}