git: b51f8bae570b - main - [fib algo][dxr] Optimize trie updating.
Marko Zec
zec at FreeBSD.org
Wed Sep 15 20:50:11 UTC 2021
The branch main has been updated by zec:
URL: https://cgit.FreeBSD.org/src/commit/?id=b51f8bae570b4e908191a1dae9da38aacf8c0fab
commit b51f8bae570b4e908191a1dae9da38aacf8c0fab
Author: Marko Zec <zec at FreeBSD.org>
AuthorDate: 2021-09-15 20:36:59 +0000
Commit: Marko Zec <zec at FreeBSD.org>
CommitDate: 2021-09-15 20:42:49 +0000
[fib algo][dxr] Optimize trie updating.
Don't rebuild in vain trie parts unaffected by accumulated incremental
RIB updates.
PR: 257965
Tested by: Konrad Kreciwilk
MFC after: 3 days
---
sys/netinet/in_fib_dxr.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/sys/netinet/in_fib_dxr.c b/sys/netinet/in_fib_dxr.c
index 7afe2a3da024..3c4e5700cd6c 100644
--- a/sys/netinet/in_fib_dxr.c
+++ b/sys/netinet/in_fib_dxr.c
@@ -915,7 +915,14 @@ dxr2_try_squeeze:
for (i = da->updates_low >> dxr_x; i <= da->updates_high >> dxr_x;
i++) {
- trie_unref(da, i);
+ if (!trie_rebuild) {
+ m = 0;
+ for (int j = 0; j < (1 << dxr_x); j += 32)
+ m |= da->updates_mask[((i << dxr_x) + j) >> 5];
+ if (m == 0)
+ continue;
+ trie_unref(da, i);
+ }
ti = trie_ref(da, i);
if (ti < 0)
return;
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