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Diffstat (limited to 'datapath-windows/ovsext/Mpls.h')
-rw-r--r-- | datapath-windows/ovsext/Mpls.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/datapath-windows/ovsext/Mpls.h b/datapath-windows/ovsext/Mpls.h new file mode 100644 index 000000000..6e53e46db --- /dev/null +++ b/datapath-windows/ovsext/Mpls.h @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2015 Cloudbase Solutions Srl + * + * 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. + */ + +#ifndef __MPLS_H_ +#define __MPLS_H_ 1 + +#include "precomp.h" +#include "Ethernet.h" + +/* + * MPLS definitions + */ +#define FLOW_MAX_MPLS_LABELS 3 + +#define MPLS_HLEN 4 +#define MPLS_BOS_MASK 0x00000100 + +/* Reference: RFC 5462, RFC 3032 + * + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Label | TC |S| TTL | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * + * Label: Label Value, 20 bits + * TC: Traffic Class field, 3 bits + * S: Bottom of Stack, 1 bit + * TTL: Time to Live, 8 bits + */ + +typedef struct MPLSHdr { + ovs_be32 lse; +} MPLSHdr; + +__inline BOOLEAN +OvsEthertypeIsMpls(ovs_be16 ethertype) +{ + return ethertype == htons(ETH_TYPE_MPLS) || + ethertype == htons(ETH_TYPE_MPLS_MCAST); +} + +#endif /* __MPLS_H_ */ |