From afd566b56629bac4c8ca622413c8c001e2e7edfa Mon Sep 17 00:00:00 2001 From: Phil Sutter 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 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 Signed-off-by: Phil Sutter --- 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