Backport Serializing bitseq alloc (#1788) #1967
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Previously the bitseq alloc was allocating the first available bit from the begining of the sequence. With this commit the bitseq alloc will proceed from the current allocation. This change will affect the way ipam and vni allocation is done currently. The ip allocation will be done sequentially from the previous allocation as opposed to the first available IP. Signed-off-by: Abhinandan Prativadi <abhi@docker.com> (cherry picked from commit 5790b5c)
Since bit allocation is no longer first available from the start some verfications are removed/modified to the change allocation model Signed-off-by: Abhinandan Prativadi <abhi@docker.com> (cherry picked from commit 0184de8)
Signed-off-by: Abhinandan Prativadi <abhi@docker.com> (cherry picked from commit a2bcac0)
The byteoffset calculation was skewed to double include the offset value calculated. The double calculation happens if the starting ordinal is part of the head sequence block. This error in calculation could result in duplicate but getting allocated eventually propogating to ipam and vni id allocations Signed-off-by: Abhinandan Prativadi <abhi@docker.com> (cherry picked from commit 6ed2ad9)
Signed-off-by: Abhinandan Prativadi <abhi@docker.com> (cherry picked from commit f766f09)
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