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From 40cdcccf0fc6f4d0d4c2248d4bd9bf3193a922e9 Mon Sep 17 00:00:00 2001
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From: Phil Sutter <psutter@redhat.com>
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Date: Tue, 30 Jun 2020 16:20:23 +0200
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Subject: [PATCH] segtree: Merge get_set_interval_find() and
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get_set_interval_end()
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1832235
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Upstream Status: nftables commit f21e73d6700b8
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commit f21e73d6700b873eb1a295f43bbad9caaca577e2
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Author: Phil Sutter <phil@nwl.cc>
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Date: Thu Apr 30 13:57:35 2020 +0200
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segtree: Merge get_set_interval_find() and get_set_interval_end()
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Both functions were very similar already. Under the assumption that they
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will always either see a range (or start of) that matches exactly or not
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at all, reduce complexity and make get_set_interval_find() accept NULL
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(left or) right values. This way it becomes a full replacement for
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get_set_interval_end().
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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---
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src/segtree.c | 63 +++++++++++++--------------------------------------
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1 file changed, 16 insertions(+), 47 deletions(-)
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diff --git a/src/segtree.c b/src/segtree.c
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index dc4db6b..6e1f696 100644
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--- a/src/segtree.c
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+++ b/src/segtree.c
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@@ -681,63 +681,31 @@ static struct expr *get_set_interval_find(const struct table *table,
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{
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struct expr *range = NULL;
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struct set *set;
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- mpz_t low, high;
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struct expr *i;
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+ mpz_t val;
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set = set_lookup(table, set_name);
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- mpz_init2(low, set->key->len);
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- mpz_init2(high, set->key->len);
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+ mpz_init2(val, set->key->len);
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list_for_each_entry(i, &set->init->expressions, list) {
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switch (i->key->etype) {
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case EXPR_RANGE:
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- range_expr_value_low(low, i);
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- range_expr_value_high(high, i);
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- if (mpz_cmp(left->key->value, low) >= 0 &&
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- mpz_cmp(right->key->value, high) <= 0) {
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- range = expr_clone(i->key);
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- goto out;
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- }
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- break;
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- default:
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- break;
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- }
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- }
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-out:
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- mpz_clear(low);
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- mpz_clear(high);
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-
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- return range;
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-}
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-
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-static struct expr *get_set_interval_end(const struct table *table,
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- const char *set_name,
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- struct expr *left)
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-{
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- struct expr *i, *range = NULL;
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- struct set *set;
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- mpz_t low, high;
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+ range_expr_value_low(val, i);
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+ if (left && mpz_cmp(left->key->value, val))
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+ break;
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- set = set_lookup(table, set_name);
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- mpz_init2(low, set->key->len);
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- mpz_init2(high, set->key->len);
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+ range_expr_value_high(val, i);
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+ if (right && mpz_cmp(right->key->value, val))
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+ break;
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- list_for_each_entry(i, &set->init->expressions, list) {
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- switch (i->key->etype) {
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- case EXPR_RANGE:
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- range_expr_value_low(low, i);
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- if (mpz_cmp(low, left->key->value) == 0) {
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- range = expr_clone(i->key);
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- goto out;
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- }
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- break;
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+ range = expr_clone(i->key);
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+ goto out;
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default:
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break;
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}
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}
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out:
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- mpz_clear(low);
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- mpz_clear(high);
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+ mpz_clear(val);
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return range;
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}
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@@ -767,9 +735,9 @@ int get_set_decompose(struct table *table, struct set *set)
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left = NULL;
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} else {
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if (left) {
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- range = get_set_interval_end(table,
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- set->handle.set.name,
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- left);
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+ range = get_set_interval_find(table,
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+ set->handle.set.name,
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+ left, NULL);
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if (range)
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compound_expr_add(new_init, range);
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else
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@@ -780,7 +748,8 @@ int get_set_decompose(struct table *table, struct set *set)
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}
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}
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if (left) {
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- range = get_set_interval_end(table, set->handle.set.name, left);
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+ range = get_set_interval_find(table, set->handle.set.name,
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+ left, NULL);
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if (range)
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compound_expr_add(new_init, range);
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else
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--
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2.31.1
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