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/*
* Copyright (c) 2018 Cisco and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.fd.hc2vpp.it.jvpp.benchmark;
import io.fd.vpp.jvpp.acl.dto.AclAddReplace;
import io.fd.vpp.jvpp.acl.types.AclRule;
import javax.annotation.concurrent.NotThreadSafe;
@NotThreadSafe
class AclProviderImpl implements AclProvider {
private static final int CREATE_NEW_ACL = -1;
private static final short MAX_PORT_NUMBER = (short) 65535;
private final int aclSetSize;
private final AclAddReplace[] acls;
/**
* Pointer to ACL to be returned by invocation of {@link #next()} method.
*/
private int currentAcl = 0;
AclProviderImpl(final int aclSetSize, final int aclSize) {
this.aclSetSize = aclSetSize;
acls = new AclAddReplace[aclSetSize];
initAcls(aclSetSize, aclSize);
}
@Override
public AclAddReplace next() {
final AclAddReplace result = acls[currentAcl];
currentAcl = (currentAcl + 1) % aclSetSize;
return result;
}
@Override
public void setAclIndex(final int index) {
for (int i = 0; i < aclSetSize; ++i) {
acls[i].aclIndex = index;
}
}
private void initAcls(final int aclSetSize, final int aclSize) {
long ip = 0x01000000; // 1.0.0.0
for (int i = 0; i < aclSetSize; ++i) {
acls[i] = createAddReplaceRequest(aclSize, CREATE_NEW_ACL, (int) (ip++));
}
}
private static AclAddReplace createAddReplaceRequest(final int size, final int index, final int ip) {
AclAddReplace request = new AclAddReplace();
request.aclIndex = index;
request.count = size;
request.r = createRules(size, ip);
return request;
}
private static AclRule[] createRules(final int size, final int ip) {
final AclRule[] rules = new AclRule[size];
for (int i = 0; i < size; ++i) {
rules[i] = new AclRule();
rules[i].isIpv6 = 0;
rules[i].isPermit = 1;
rules[i].srcIpAddr = getIp(ip);
rules[i].srcIpPrefixLen = 32;
rules[i].dstIpAddr = getIp(ip);
rules[i].dstIpPrefixLen = 32;
rules[i].dstportOrIcmpcodeFirst = 0;
rules[i].dstportOrIcmpcodeLast = MAX_PORT_NUMBER;
rules[i].srcportOrIcmptypeFirst = 0;
rules[i].srcportOrIcmptypeLast = MAX_PORT_NUMBER;
rules[i].proto = 17; // UDP
}
return rules;
}
private static byte[] getIp(final int i) {
int b1 = (i >> 24) & 0xff;
int b2 = (i >> 16) & 0xff;
int b3 = (i >> 8) & 0xff;
int b4 = i & 0xff;
return new byte[] {(byte) b1, (byte) b2, (byte) b3, (byte) b4};
}
}
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