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Diffstat (limited to '')
| -rw-r--r-- | mpls.h | 41 |
1 files changed, 41 insertions, 0 deletions
@@ -0,0 +1,41 @@ +/* + * Copyright (C) 2001 WIDE Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#define LABEL_MASK 0xfffff000 +#define LABEL_SHIFT 12 +#define TC_MASK 0x00000e00 +#define TC_SHIFT 9 +#define STACK_MASK 0x00000100 +#define STACK_SHIFT 8 +#define TTL_MASK 0x000000ff +#define TTL_SHIFT 0 + +#define MPLS_LABEL(x) (((x) & LABEL_MASK) >> LABEL_SHIFT) +#define MPLS_TC(x) (((x) & TC_MASK) >> TC_SHIFT) +#define MPLS_STACK(x) (((x) & STACK_MASK) >> STACK_SHIFT) +#define MPLS_TTL(x) (((x) & TTL_MASK) >> TTL_SHIFT) |