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[XFRM] Optimize SA dumping

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Same comments as in "[XFRM] Optimize policy dumping"

The numbers are (20K SAs):
This commit is contained in:
Jamal Hadi Salim 2006-12-04 20:03:35 -08:00 committed by David S. Miller
parent baf5d743d1
commit 94b9bb5480
1 changed files with 11 additions and 13 deletions
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24
net/xfrm/xfrm_state.c
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@ -1099,7 +1099,7 @@ int xfrm_state_walk(u8 proto, int (*func)(struct xfrm_state *, int, void*),
void *data)
{
int i;
struct xfrm_state *x;
struct xfrm_state *x, *last = NULL;
struct hlist_node *entry;
int count = 0;
int err = 0;
@ -1107,24 +1107,22 @@ int xfrm_state_walk(u8 proto, int (*func)(struct xfrm_state *, int, void*),
spin_lock_bh(&xfrm_state_lock);
for (i = 0; i <= xfrm_state_hmask; i++) {
hlist_for_each_entry(x, entry, xfrm_state_bydst+i, bydst) {
if (xfrm_id_proto_match(x->id.proto, proto))
count++;
if (!xfrm_id_proto_match(x->id.proto, proto))
continue;
if (last) {
err = func(last, count, data);
if (err)
goto out;
}
last = x;
count++;
}
}
if (count == 0) {
err = -ENOENT;
goto out;
}
for (i = 0; i <= xfrm_state_hmask; i++) {
hlist_for_each_entry(x, entry, xfrm_state_bydst+i, bydst) {
if (!xfrm_id_proto_match(x->id.proto, proto))
continue;
err = func(x, --count, data);
if (err)
goto out;
}
}
err = func(last, 0, data);
out:
spin_unlock_bh(&xfrm_state_lock);
return err;