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Fix a recently introduced panic in if_detach() by delaying

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the invalidation of ifindex_table[] entry. Probably this
code should be moved even further down, but for the time being
let's do it this way.
This commit is contained in:
Luigi Rizzo 2004-04-19 17:28:15 +00:00
parent e69d8e61f3
commit f4247b5934
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=128432
1 changed files with 11 additions and 11 deletions
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22
sys/net/if.c
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@ -520,17 +520,6 @@ if_detach(struct ifnet *ifp)
s = splnet(); s = splnet();
if_down(ifp); if_down(ifp);
/*
* Remove address from ifindex_table[] and maybe decrement if_index.
* Clean up all addresses.
*/
ifaddr_byindex(ifp->if_index) = NULL;
destroy_dev(ifdev_byindex(ifp->if_index));
ifdev_byindex(ifp->if_index) = NULL;
while (if_index > 0 && ifaddr_byindex(if_index) == NULL)
if_index--;
for (ifa = TAILQ_FIRST(&ifp->if_addrhead); ifa; ifa = next) { for (ifa = TAILQ_FIRST(&ifp->if_addrhead); ifa; ifa = next) {
next = TAILQ_NEXT(ifa, ifa_link); next = TAILQ_NEXT(ifa, ifa_link);
@ -570,6 +559,17 @@ if_detach(struct ifnet *ifp)
*/ */
in6_ifdetach(ifp); in6_ifdetach(ifp);
#endif #endif
/*
* Remove address from ifindex_table[] and maybe decrement if_index.
* Clean up all addresses.
*/
ifaddr_byindex(ifp->if_index) = NULL;
destroy_dev(ifdev_byindex(ifp->if_index));
ifdev_byindex(ifp->if_index) = NULL;
while (if_index > 0 && ifaddr_byindex(if_index) == NULL)
if_index--;
/* We can now free link ifaddr. */ /* We can now free link ifaddr. */
ifa = TAILQ_FIRST(&ifp->if_addrhead); ifa = TAILQ_FIRST(&ifp->if_addrhead);