/**
* Converse of addRule. Since we know all the rules ever stored in this flowmap we simply retrieve
* the rule using the id provided and remove each of its fields from the underlying structures.
*
* @param id - the id of the rule to remove
* @throws FlowEntryNotFound - if this id is unknown. Could indicate that rule has already been
* removed.
* @return
*/
public void removeRule(int id) throws FlowEntryNotFound {
ruleCount--;
if (!rules.containsKey(id)) throw new FlowEntryNotFound(id);
FlowEntry rule = rules.get(id);
BitSet flowRuleSet = getFlowRuleSet(rule);
remove(port, rule.getRuleMatch().getInputPort(), flowRuleSet);
remove(dpids, rule.dpid, flowRuleSet);
remove(vlan, (int) rule.getRuleMatch().getDataLayerVirtualLan(), flowRuleSet);
remove(vlan, rule.getRuleMatch().getDataLayerVirtualLanPriorityCodePoint() << 16, flowRuleSet);
remove(dl_type, rule.getRuleMatch().getDataLayerType(), flowRuleSet);
remove(nw, (short) rule.getRuleMatch().getNetworkProtocol(), flowRuleSet);
remove(nw, (short) (rule.getRuleMatch().getNetworkTypeOfService() << 8), flowRuleSet);
remove(tp, (int) rule.getRuleMatch().getTransportSource(), flowRuleSet);
remove(tp, rule.getRuleMatch().getTransportDestination() << 16, flowRuleSet);
remove(dl_src, FVMatch.toLong(rule.getRuleMatch().getDataLayerSource()), flowRuleSet);
remove(dl_dst, FVMatch.toLong(rule.getRuleMatch().getDataLayerDestination()), flowRuleSet);
remove(prioSet, rule.getPriority(), flowRuleSet);
vlan_ignore.clear(rule.getId());
rules.remove(rule.getId());
allRules.andNot(flowRuleSet);
}
/**
* Lame: linear search to delete something in a sorted set ... but it's sorted by priority, not ID
*/
@Override
public void removeRule(int id) throws FlowEntryNotFound {
for (FlowEntry flowEntry : this.getRules())
if (flowEntry.getId() == id) {
this.rules.remove(flowEntry);
return;
}
throw new FlowEntryNotFound(id);
}
/**
* Get a bitset corresponding to a rule.
*
* @param rule - the rule.
* @return the bitset corresponding to this rule.
*/
private BitSet getFlowRuleSet(FlowEntry rule) {
BitSet flowRuleSet = new BitSet();
flowRuleSet.set(rule.getId());
return flowRuleSet;
}
private FlowIntersect getIntersect(FlowEntry fe, HashMap<Integer, FlowIntersect> inters) {
FlowIntersect inter = inters.get(fe.getId());
if (inter == null) inter = new FlowIntersect(fe);
return inter;
}
/**
* Adds a rule to the flowmap. It does so by exploding the rule into its fields and storing each
* field into its independent structure.
*
* @param rule - the rule which will be added to the flowmap
* @return
*/
public void addRule(FlowEntry rule) {
ruleCount++;
allRules.set(rule.getId());
BitSet flowRuleSet = getFlowRuleSet(rule);
add(dpids, rule.dpid, flowRuleSet);
add(
port,
(rule.getRuleMatch().getWildcards() & FVMatch.OFPFW_IN_PORT) != 0
? ANY_IN_PORT
: rule.getRuleMatch().getInputPort(),
flowRuleSet);
short vid = rule.getRuleMatch().getDataLayerVirtualLan();
int vpcp = rule.getRuleMatch().getDataLayerVirtualLanPriorityCodePoint();
/*
* Openflowj sets unspecified fields to zero.
*/
if (vid != 0 || vpcp != 0) {
vlan_ignore.set(rule.getId());
}
add(
vlan,
(rule.getRuleMatch().getWildcards() & FVMatch.OFPFW_DL_VLAN) != 0
? (int) ANY_VLAN_ID
: (int) rule.getRuleMatch().getDataLayerVirtualLan(),
flowRuleSet);
add(
vlan,
(rule.getRuleMatch().getWildcards() & FVMatch.OFPFW_DL_VLAN_PCP) != 0
? ANY_VLAN_PCP << 16
: rule.getRuleMatch().getDataLayerVirtualLanPriorityCodePoint() << 16,
flowRuleSet);
add(
dl_type,
(rule.getRuleMatch().getWildcards() & FVMatch.OFPFW_DL_TYPE) != 0
? ANY_ETHER
: rule.getRuleMatch().getDataLayerType(),
flowRuleSet);
add(
nw,
(rule.getRuleMatch().getWildcards() & FVMatch.OFPFW_NW_PROTO) != 0
? ANY_NW_PROTO_TOS
: (short) rule.getRuleMatch().getNetworkProtocol(),
flowRuleSet);
add(
nw,
(rule.getRuleMatch().getWildcards() & FVMatch.OFPFW_NW_TOS) != 0
? (short) (ANY_NW_PROTO_TOS << 8)
: (short) (rule.getRuleMatch().getNetworkTypeOfService() << 8),
flowRuleSet);
add(
tp,
(rule.getRuleMatch().getWildcards() & FVMatch.OFPFW_TP_SRC) != 0
? ANY_TP
: (int) rule.getRuleMatch().getTransportSource(),
flowRuleSet);
add(
tp,
(rule.getRuleMatch().getWildcards() & FVMatch.OFPFW_TP_DST) != 0
? ANY_TP << 16
: rule.getRuleMatch().getTransportDestination() << 16,
flowRuleSet);
add(
dl_src,
(rule.getRuleMatch().getWildcards() & FVMatch.OFPFW_DL_SRC) != 0
? ANY_MAC
: FVMatch.toLong(rule.getRuleMatch().getDataLayerSource()),
flowRuleSet);
add(
dl_dst,
(rule.getRuleMatch().getWildcards() & FVMatch.OFPFW_DL_DST) != 0
? ANY_MAC
: FVMatch.toLong(rule.getRuleMatch().getDataLayerDestination()),
flowRuleSet);
add(prioSet, rule.getPriority(), flowRuleSet);
FVLog.log(LogLevel.DEBUG, null, "prioSet:", prioSet);
rules.put(rule.getId(), rule);
getPrioSetRange();
}