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ifindex_alloc_locked() never fails and doesn't have no-lock version,

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so change the prototype.

Sponsored by:	Netflix
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This commit is contained in:
Gleb Smirnoff 2014-11-08 07:23:01 +00:00
parent 6e48c75269
commit f4507b7166
1 changed files with 5 additions and 16 deletions
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21
sys/net/if.c
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@ -265,13 +265,12 @@ ifnet_byindex_ref(u_short idx)
* Allocate an ifindex array entry; return 0 on success or an error on
* failure.
*/
static int
ifindex_alloc_locked(u_short *idxp)
static u_short
ifindex_alloc(void)
{
u_short idx;
IFNET_WLOCK_ASSERT();
retry:
/*
* Try to find an empty slot below V_if_index. If we fail, take the
@ -289,8 +288,7 @@ ifindex_alloc_locked(u_short *idxp)
}
if (idx > V_if_index)
V_if_index = idx;
*idxp = idx;
return (0);
return (idx);
}
static void
@ -431,11 +429,7 @@ if_alloc(u_char type)
ifp = malloc(sizeof(struct ifnet), M_IFNET, M_WAITOK|M_ZERO);
IFNET_WLOCK();
if (ifindex_alloc_locked(&idx) != 0) {
IFNET_WUNLOCK();
free(ifp, M_IFNET);
return (NULL);
}
idx = ifindex_alloc();
ifnet_setbyindex_locked(idx, IFNET_HOLD);
IFNET_WUNLOCK();
ifp->if_index = idx;
@ -1022,7 +1016,6 @@ if_detach_internal(struct ifnet *ifp, int vmove)
void
if_vmove(struct ifnet *ifp, struct vnet *new_vnet)
{
u_short idx;
/*
* Detach from current vnet, but preserve LLADDR info, do not
@ -1054,11 +1047,7 @@ if_vmove(struct ifnet *ifp, struct vnet *new_vnet)
CURVNET_SET_QUIET(new_vnet);
IFNET_WLOCK();
if (ifindex_alloc_locked(&idx) != 0) {
IFNET_WUNLOCK();
panic("if_index overflow");
}
ifp->if_index = idx;
ifp->if_index = ifindex_alloc();
ifnet_setbyindex_locked(ifp->if_index, ifp);
IFNET_WUNLOCK();