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Add basic BIER elements #397

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Add basic BIER elements #397

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Commits on Oct 31, 2024

  1. Add basic BIER elements 

    This commit adds basic elements for BIER packets processing.

First, it adds the Bier Forwarding Table (BIFT) which is implemented as the IPv6 forwarding table.
That is, Fastclick is extended with a 'biertable' that defines the basic operations on the BIFT.
The 'bierroutetable' element defines handlers allowing external interactions and the
'lookupbiertable' is the element representing the BIFT.

Second, two simple filtering elements are added, (i) 'checkbierheader' that verifies the header of
a BIER packet and (ii) 'checkbierin6header' that filters IPv6 packet to detect BIERin6 encapsulated
BIER packets.
    @nrybowski
    nrybowski committed Oct 31, 2024
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  2. bierroutetable: Add port count

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    nrybowski committed Oct 31, 2024
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  3. biertable: Add lookup and output interface on route addition

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    nrybowski committed Oct 31, 2024
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  4. bitvector: Build Bitvector from array of uint32_t

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    nrybowski committed Oct 31, 2024
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  5. bier: Encode and decode BIER header

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    nrybowski committed Oct 31, 2024
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  6. lookupbiertable: Implement BIER forwarding

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    nrybowski committed Oct 31, 2024
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  7. checkbierheader: Remove IPv6 header check

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    nrybowski committed Oct 31, 2024
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  8. bier: Add copyright

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    nrybowski committed Oct 31, 2024
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  9. bier: Add BFR prefix to BIFT

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    nrybowski committed Oct 31, 2024
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  10. bierroutetable: batch route addition

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    nrybowski committed Oct 31, 2024
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  11. lookupbiertable: Allow removing BIFT entries

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    nrybowski committed Oct 31, 2024
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  12. bier: Add elements' documentation

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    nrybowski committed Oct 31, 2024
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