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#!/bin/bash

# test adding many elements to an interval map
# even with HOWMANY=2 there are memory allocation failures in the current
# master - the patch fixes that
# NOTE this is only an issue with two separate nft calls

HOWMANY=2

tmpfile=$(mktemp)
if [ ! -w $tmpfile ] ; then
	echo "Failed to create tmp file" >&2
	exit 0
fi

trap "rm -rf $tmpfile" EXIT # cleanup if aborted

generate_add() {
	echo -n "{"
	for ((i=1; i<=HOWMANY; i++)) ; do
		for ((j=1; j<=HOWMANY; j++)) ; do
			[ "$i" == "$HOWMANY" ] && [ "$j" == "$HOWMANY" ] && break
			echo -n "10.${i}.${j}.0/24 : 10.0.${i}.${j}, "
		done
	done
	echo -n "}"
}

generate_test() {
	count=0
	elements=""
	for ((i=1; i<=HOWMANY; i++)) ; do
		for ((j=1; j<=HOWMANY; j++)) ; do
			((count++))
			elements="${elements}10.${i}.${j}.0/24 : 10.0.${i}.${j}"
			[ "$i" == "$HOWMANY" ] && [ "$j" == "$HOWMANY" ] && break
			if [ "$count" == "2" ] ; then
				count=0
				elements="${elements},\\n\\t\\t\\t     "
			else
				elements="${elements}, "
			fi
		done
	done
	echo -e "$elements"
}

echo "add table x
add map x y { type ipv4_addr : ipv4_addr; flags interval; }
add element x y $(generate_add)" > $tmpfile

set -e
$NFT -f $tmpfile

n=$HOWMANY
echo "add element x y { 10.${n}.${n}.0/24 : 10.0.${n}.${n} }" > $tmpfile

$NFT -f $tmpfile

EXPECTED="table ip x {
	map y {
		type ipv4_addr : ipv4_addr
		flags interval
		elements = { "$(generate_test)" }
	}
}"
GET=$($NFT list ruleset)
if [ "$EXPECTED" != "$GET" ] ; then
	DIFF="$(which diff)"
	[ -x $DIFF ] && $DIFF -u <(echo "$EXPECTED") <(echo "$GET")
	exit 1
fi