Ok, heres is the SA version and the numbers.
Against net-2.6.20
cheers,
jamal
[XFRM] Optimize SA dumping
Same comments as in "[XFRM] Optimize policy dumping"
Again, the same issue as in the policy optimization; we could do better
only if we didnt have to do bending backwards to make pfkey happy.
In the future we could move some of this burden to pfkey itself.
For now this is better than whats there today.
The numbers are (20K SAs):
------
1) before the change ..
speedopolis:~# time ./ip xf sta
real 0m5.321s
user 0m0.004s
sys 0m5.316s
2) after the change ...
speedopolis:~# time ./ip x state
real 0m1.994s
user 0m0.000s
sys 0m1.992s
------
Signed-off-by: Jamal Hadi Salim <[EMAIL PROTECTED]>
---
commit 8a0f11d0e7197624341ab0536fbf24af5cb67e2b
tree 48dc4e907733e9c6989e7c4e8ac9bcd72c4d26b6
parent 0355ced4a81a1af96b4531680e9c593d3967a5f1
author Jamal Hadi Salim <[EMAIL PROTECTED]> Sun, 03 Dec 2006 10:29:50 -0500
committer Jamal Hadi Salim <[EMAIL PROTECTED]> Sun, 03 Dec 2006 10:29:50 -0500
net/xfrm/xfrm_state.c | 38 +++++++++++++++++++++++---------------
1 files changed, 23 insertions(+), 15 deletions(-)
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 864962b..148b148 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1099,32 +1099,40 @@ int xfrm_state_walk(u8 proto, int (*func)(struct
xfrm_state *, int, void*),
void *data)
{
int i;
- struct xfrm_state *x;
struct hlist_node *entry;
+ struct xfrm_state *x, *send_x = NULL, *last_x = NULL;
int count = 0;
- int err = 0;
+ int err = -ENOENT;
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 (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 (count && send_x != last_x) {
+ err = func(send_x, count, data);
+ if (err)
+ goto out;
+ send_x = NULL;
+ }
if (!xfrm_id_proto_match(x->id.proto, proto))
continue;
- err = func(x, --count, data);
- if (err)
- goto out;
+
+ if (!count) {
+ last_x = send_x = x;
+ } else {
+ send_x = last_x;
+ last_x = x;
+ }
+ count++;
}
}
+
+ if (send_x && send_x != last_x)
+ err = func(send_x, count, data);
+ if (count) {
+ BUG_TRAP(last_x == NULL);
+ err = func(last_x, 0, data);
+ }
out:
spin_unlock_bh(&xfrm_state_lock);
return err;
