nftables/0003-intervals-do-not-report-exact-overlaps-for-new-eleme.patch

85 lines
2.7 KiB
Diff
Raw Normal View History

From afd566b56629bac4c8ca622413c8c001e2e7edfa Mon Sep 17 00:00:00 2001
From: Phil Sutter <psutter@redhat.com>
Date: Fri, 24 Jun 2022 16:02:59 +0200
Subject: [PATCH] intervals: do not report exact overlaps for new elements
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1917398
Upstream Status: nftables commit 87ba510fc704f
commit 87ba510fc704f766b5417d3bfc326e8ab9378c2a
Author: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Mon Jun 13 17:22:47 2022 +0200
intervals: do not report exact overlaps for new elements
Two new elements that represent an exact overlap should not trigger an error.
add table t
add set t s { type ipv4_addr; flags interval; }
add element t s { 1.0.1.0/24 }
...
add element t s { 1.0.1.0/24 }
result in a bogus error.
# nft -f set.nft
set.nft:1002:19-28: Error: conflicting intervals specified
add element t s { 1.0.1.0/24 }
^^^^^^^^^^
Fixes: 3da9643fb9ff ("intervals: add support to automerge with kernel elements")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
src/intervals.c | 3 +--
tests/shell/testcases/sets/exact_overlap_0 | 22 ++++++++++++++++++++++
2 files changed, 23 insertions(+), 2 deletions(-)
create mode 100755 tests/shell/testcases/sets/exact_overlap_0
diff --git a/src/intervals.c b/src/intervals.c
index bc414d6..89f5c33 100644
--- a/src/intervals.c
+++ b/src/intervals.c
@@ -540,8 +540,7 @@ static int setelem_overlap(struct list_head *msgs, struct set *set,
}
if (mpz_cmp(prev_range.low, range.low) == 0 &&
- mpz_cmp(prev_range.high, range.high) == 0 &&
- (elem->flags & EXPR_F_KERNEL || prev->flags & EXPR_F_KERNEL))
+ mpz_cmp(prev_range.high, range.high) == 0)
goto next;
if (mpz_cmp(prev_range.low, range.low) <= 0 &&
diff --git a/tests/shell/testcases/sets/exact_overlap_0 b/tests/shell/testcases/sets/exact_overlap_0
new file mode 100755
index 0000000..1ce9304
--- /dev/null
+++ b/tests/shell/testcases/sets/exact_overlap_0
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+RULESET="add table t
+add set t s { type ipv4_addr; flags interval; }
+add element t s { 1.0.1.0/24 }
+add element t s { 1.0.2.0/23 }
+add element t s { 1.0.8.0/21 }
+add element t s { 1.0.32.0/19 }
+add element t s { 1.1.0.0/24 }
+add element t s { 1.1.2.0/23 }
+add element t s { 1.1.4.0/22 }
+add element t s { 1.1.8.0/24 }
+add element t s { 1.1.9.0/24 }
+add element t s { 1.1.10.0/23 }
+add element t s { 1.1.12.0/22 }
+add element t s { 1.1.16.0/20 }
+add element t s { 1.1.32.0/19 }
+add element t s { 1.0.1.0/24 }"
+
+$NFT -f - <<< $RULESET || exit 1
+
+$NFT add element t s { 1.0.1.0/24 }
--
2.36.1