@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (getClass() != obj.getClass()) return false;
OFFlowStatsEntryVer10 other = (OFFlowStatsEntryVer10) obj;
if (tableId == null) {
if (other.tableId != null) return false;
} else if (!tableId.equals(other.tableId)) return false;
if (match == null) {
if (other.match != null) return false;
} else if (!match.equals(other.match)) return false;
if (durationSec != other.durationSec) return false;
if (durationNsec != other.durationNsec) return false;
if (priority != other.priority) return false;
if (idleTimeout != other.idleTimeout) return false;
if (hardTimeout != other.hardTimeout) return false;
if (cookie == null) {
if (other.cookie != null) return false;
} else if (!cookie.equals(other.cookie)) return false;
if (packetCount == null) {
if (other.packetCount != null) return false;
} else if (!packetCount.equals(other.packetCount)) return false;
if (byteCount == null) {
if (other.byteCount != null) return false;
} else if (!byteCount.equals(other.byteCount)) return false;
if (actions == null) {
if (other.actions != null) return false;
} else if (!actions.equals(other.actions)) return false;
return true;
}
/**
* Checks for "ANY" values that should be wildcards but aren't, such as NW_SRC/DST 0.0.0.0, and
* TCP/UDP port 0.
*
* @param omatch The OFMatch of the FlowMod we are comparing entries against
* @param owcard The wildcard field of the FlowMod.
* @return the modified wildcard value (a copy).
*/
private int convertToWcards(Match omatch) {
int owcard = 0;
for (MatchField<?> mf : omatch.getMatchFields()) {
owcard |= 1 << mf.id.ordinal();
}
// ASK ABOUT THIS BEHAVIOR, IS IT CORRECT THIS WAY?
if (omatch.isFullyWildcarded(MatchField.IPV4_DST)) {
// owcard |= Match.OFPFW_NW_DST_ALL | Match.OFPFW_NW_DST_MASK;
owcard |= MatchField.IPV4_DST.id.ordinal();
}
if (omatch.isFullyWildcarded(MatchField.IPV4_SRC)) {
// owcard |= Match.OFPFW_NW_SRC_ALL | Match.OFPFW_NW_SRC_MASK;
owcard |= MatchField.IPV4_SRC.id.ordinal();
}
if (omatch.isFullyWildcarded(MatchField.IP_PROTO)) {
// owcard |= Match.OFPFW_NW_PROTO;
owcard |= MatchField.IP_PROTO.id.ordinal();
}
if (omatch.isFullyWildcarded(MatchField.TCP_DST)) {
// owcard |= Match.OFPFW_TP_DST;
owcard |= MatchField.TCP_DST.id.ordinal();
}
if (omatch.isFullyWildcarded(MatchField.TCP_SRC)) {
// owcard |= Match.OFPFW_TP_SRC;
owcard |= MatchField.TCP_SRC.id.ordinal();
}
return owcard;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((tableId == null) ? 0 : tableId.hashCode());
result = prime * result + ((match == null) ? 0 : match.hashCode());
result = prime * (int) (durationSec ^ (durationSec >>> 32));
result = prime * (int) (durationNsec ^ (durationNsec >>> 32));
result = prime * result + priority;
result = prime * result + idleTimeout;
result = prime * result + hardTimeout;
result = prime * result + ((cookie == null) ? 0 : cookie.hashCode());
result = prime * result + ((packetCount == null) ? 0 : packetCount.hashCode());
result = prime * result + ((byteCount == null) ? 0 : byteCount.hashCode());
result = prime * result + ((actions == null) ? 0 : actions.hashCode());
return result;
}
/**
* Compares this entry against another, and tries to determine if it is a superset, subset, or
* equal to it. Required for non-strict matching and overlap checking
*
* <p>For each field, we first check wildcard equality. If both are equal, they are either 1 or 0.
* If 0, we further check for field equality. If the fields are not equal, the flow entries are
* considered disjoint and we exit comparison.
*
* <p>If both wildcards are not equal, we check if one subsumes the other.
*
* <p>The result is tracked for each field in three ints - equality, superset, and subset. At the
* end, either 1) one of the ints are 0x3fffff, or 2) none are.
*
* @param omatch The other FlowEntry to compare this one against.
* @param strict whether FlowMod from which the match came was strict or not.
* @return Union enum representing the relationship
*/
public int compare(Match omatch, boolean strict) {
// to allow pass by reference...in order: equal, superset, subset
int[] intersect = new int[] {0, 0, 0};
Match tmatch = this.flowmod.getMatch();
int twcard = this.convertToWcards(tmatch);
int owcard = this.convertToWcards(omatch);
/* inport */
if (tmatch.isFullyWildcarded(MatchField.IN_PORT)
== omatch.isFullyWildcarded(MatchField.IN_PORT)) {
if (findDisjoint(
twcard,
MatchField.IN_PORT.id.ordinal(),
intersect,
tmatch.get(MatchField.IN_PORT).getPortNumber(),
omatch.get(MatchField.IN_PORT).getPortNumber())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.IN_PORT.id.ordinal(), intersect);
}
/* L2 */
if (tmatch.isFullyWildcarded(MatchField.ETH_DST)
== omatch.isFullyWildcarded(MatchField.ETH_DST)) {
if (findDisjoint(
twcard,
MatchField.ETH_DST.id.ordinal(),
intersect,
tmatch.get(MatchField.ETH_DST).getLong(),
omatch.get(MatchField.ETH_DST).getLong())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.ETH_DST.id.ordinal(), intersect);
}
if (tmatch.isFullyWildcarded(MatchField.ETH_SRC)
== omatch.isFullyWildcarded(MatchField.ETH_SRC)) {
if (findDisjoint(
twcard,
MatchField.ETH_SRC.id.ordinal(),
intersect,
tmatch.get(MatchField.ETH_SRC).getLong(),
omatch.get(MatchField.ETH_SRC).getLong())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.ETH_SRC.id.ordinal(), intersect);
}
if (tmatch.isFullyWildcarded(MatchField.ETH_TYPE)
== omatch.isFullyWildcarded(MatchField.ETH_TYPE)) {
if (findDisjoint(
twcard,
MatchField.ETH_TYPE.id.ordinal(),
intersect,
tmatch.get(MatchField.ETH_TYPE).getValue(),
omatch.get(MatchField.ETH_TYPE).getValue())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.ETH_TYPE.id.ordinal(), intersect);
}
if (tmatch.isFullyWildcarded(MatchField.VLAN_VID)
== omatch.isFullyWildcarded(MatchField.VLAN_VID)) {
if (findDisjoint(
twcard,
MatchField.VLAN_VID.id.ordinal(),
intersect,
tmatch.get(MatchField.VLAN_VID).getVlan(),
omatch.get(MatchField.VLAN_VID).getVlan())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.VLAN_VID.id.ordinal(), intersect);
}
if (tmatch.isFullyWildcarded(MatchField.VLAN_PCP)
== omatch.isFullyWildcarded(MatchField.VLAN_PCP)) {
if (findDisjoint(
twcard,
MatchField.VLAN_PCP.id.ordinal(),
intersect,
tmatch.get(MatchField.VLAN_PCP).getValue(),
omatch.get(MatchField.VLAN_PCP).getValue())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.VLAN_PCP.id.ordinal(), intersect);
}
/* L3 */
if (tmatch.isFullyWildcarded(MatchField.IP_PROTO)
== omatch.isFullyWildcarded(MatchField.IP_PROTO)) {
if (findDisjoint(
twcard,
MatchField.IP_PROTO.id.ordinal(),
intersect,
tmatch.get(MatchField.IP_PROTO).getIpProtocolNumber(),
omatch.get(MatchField.IP_PROTO).getIpProtocolNumber())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.IP_PROTO.id.ordinal(), intersect);
}
if (tmatch.isFullyWildcarded(MatchField.IP_DSCP)
== omatch.isFullyWildcarded(MatchField.IP_DSCP)) {
if (findDisjoint(
twcard,
MatchField.IP_DSCP.id.ordinal(),
intersect,
tmatch.get(MatchField.IP_DSCP).getDscpValue(),
omatch.get(MatchField.IP_DSCP).getDscpValue())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.IP_DSCP.id.ordinal(), intersect);
}
// _ALL Flag erased? Normal behavior?
if (tmatch.isFullyWildcarded(MatchField.IPV4_SRC)
== omatch.isFullyWildcarded(MatchField.IPV4_DST)) {
if (findDisjoint(
twcard,
MatchField.IPV4_SRC.id.ordinal(),
intersect,
tmatch.get(MatchField.IPV4_SRC).getInt(),
omatch.get(MatchField.IPV4_SRC).getInt())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.IPV4_SRC.id.ordinal(), intersect);
}
if (tmatch.isFullyWildcarded(MatchField.IPV4_DST)
== omatch.isFullyWildcarded(MatchField.IPV4_DST)) {
if (findDisjoint(
twcard,
MatchField.IPV4_DST.id.ordinal(),
intersect,
tmatch.get(MatchField.IPV4_DST).getInt(),
omatch.get(MatchField.IPV4_DST).getInt())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.IPV4_DST.id.ordinal(), intersect);
}
if (tmatch.isFullyWildcarded(MatchField.ARP_SPA)
== omatch.isFullyWildcarded(MatchField.ARP_SPA)) {
if (findDisjoint(
twcard,
MatchField.ARP_SPA.id.ordinal(),
intersect,
tmatch.get(MatchField.ARP_SPA).getInt(),
omatch.get(MatchField.ARP_SPA).getInt())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.ARP_SPA.id.ordinal(), intersect);
}
if (tmatch.isFullyWildcarded(MatchField.ARP_TPA)
== omatch.isFullyWildcarded(MatchField.ARP_TPA)) {
if (findDisjoint(
twcard,
MatchField.ARP_TPA.id.ordinal(),
intersect,
tmatch.get(MatchField.ARP_TPA).getInt(),
omatch.get(MatchField.ARP_TPA).getInt())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.ARP_TPA.id.ordinal(), intersect);
}
/* L4 */
if (tmatch.isFullyWildcarded(MatchField.TCP_SRC)
== omatch.isFullyWildcarded(MatchField.TCP_SRC)) {
if (findDisjoint(
twcard,
MatchField.TCP_SRC.id.ordinal(),
intersect,
tmatch.get(MatchField.TCP_SRC).getPort(),
omatch.get(MatchField.TCP_SRC).getPort())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.TCP_SRC.id.ordinal(), intersect);
}
if (tmatch.isFullyWildcarded(MatchField.TCP_DST)
== omatch.isFullyWildcarded(MatchField.TCP_DST)) {
if (findDisjoint(
twcard,
MatchField.TCP_DST.id.ordinal(),
intersect,
tmatch.get(MatchField.TCP_DST).getPort(),
omatch.get(MatchField.TCP_DST).getPort())) {
return DISJOINT;
}
} else {
/*check if super or subset*/
findRelation(twcard, owcard, MatchField.TCP_DST.id.ordinal(), intersect);
}
int equal = intersect[EQUAL];
int superset = intersect[SUPERSET];
int subset = intersect[SUBSET];
if (!strict) {
equal |= subset;
}
// Small hack to find the actual mask
int all = 0;
for (MatchFields val : MatchFields.values()) {
owcard |= 1 << val.ordinal();
}
if (equal == all) {
return EQUAL;
}
if (superset == all) {
return SUPERSET;
}
if (subset == all) {
return SUBSET;
}
return INTERSECT;
}
