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#ifndef included_vnet_mpls_packet_h
#define included_vnet_mpls_packet_h
/*
* MPLS packet format
*
* Copyright (c) 2012 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.
*/
typedef struct {
/* Label: top 20 bits [in network byte order] */
/* Experimental: 3 bits ... */
/* S (bottom of label stack): 1 bit */
/* TTL: 8 bits */
u32 label_exp_s_ttl;
} mpls_unicast_header_t;
static inline u32 vnet_mpls_uc_get_label (u32 label_exp_s_ttl)
{
return (label_exp_s_ttl>>12);
}
static inline u32 vnet_mpls_uc_get_exp (u32 label_exp_s_ttl)
{
return ((label_exp_s_ttl>>9) & 0x7);
}
static inline u32 vnet_mpls_uc_get_s (u32 label_exp_s_ttl)
{
return ((label_exp_s_ttl>>8) & 0x1);
}
static inline u32 vnet_mpls_uc_get_ttl (u32 label_exp_s_ttl)
{
return (label_exp_s_ttl & 0xff);
}
#endif /* included_vnet_mpls_packet_h */
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