nftables/SOURCES/0026-segtree-Use-expr_clone-in-get_set_interval_.patch

From 119fbcbd8c37aac314d6ffa6225ab24ee4b0e31e Mon Sep 17 00:00:00 2001
From: Phil Sutter <psutter@redhat.com>
Date: Tue, 30 Jun 2020 16:20:23 +0200
Subject: [PATCH] segtree: Use expr_clone in get_set_interval_*()

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1832235
Upstream Status: nftables commit a2eedcc89d2ed

commit a2eedcc89d2ed40411c26d53579300c4f1ccb83d
Author: Phil Sutter <phil@nwl.cc>
Date:   Thu Apr 30 13:45:40 2020 +0200

    segtree: Use expr_clone in get_set_interval_*()

    Both functions perform interval set lookups with either start and end or
    only start values as input. Interestingly, in practice they either see
    values which are not contained or which match an existing range exactly.

    Make use of the above and just return a clone of the matching entry
    instead of creating a new one based on input data.

    Signed-off-by: Phil Sutter <phil@nwl.cc>
---
 src/segtree.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/segtree.c b/src/segtree.c
index 1ba4363..dc4db6b 100644
--- a/src/segtree.c
+++ b/src/segtree.c
@@ -695,9 +695,7 @@ static struct expr *get_set_interval_find(const struct table *table,
 			range_expr_value_high(high, i);
 			if (mpz_cmp(left->key->value, low) >= 0 &&
 			    mpz_cmp(right->key->value, high) <= 0) {
-				range = range_expr_alloc(&internal_location,
-							 expr_clone(left->key),
-							 expr_clone(right->key));
+				range = expr_clone(i->key);
 				goto out;
 			}
 			break;
@@ -729,9 +727,7 @@ static struct expr *get_set_interval_end(const struct table *table,
 		case EXPR_RANGE:
 			range_expr_value_low(low, i);
 			if (mpz_cmp(low, left->key->value) == 0) {
-				range = range_expr_alloc(&internal_location,
-							 expr_clone(left->key),
-							 expr_clone(i->key->right));
+				range = expr_clone(i->key);
 				goto out;
 			}
 			break;
-- 
2.31.1