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authorAndrew Yourtchenko <ayourtch@gmail.com>2017-04-04 14:10:40 +0000
committerDamjan Marion <dmarion.lists@gmail.com>2017-04-06 15:30:21 +0000
commitd1b05647427c79cfd5322991bbe663fae65f37b5 (patch)
treec7449b51cd46575c7978d8cac795b15a84f4163a /.gitreview
parent0eb2b16f95c0c43302be79a1c4df8b828ac97e37 (diff)
acl-plugin: make the IPv4/IPv6 non-first fragment handling in line with ACL (VPP-682)
This fixes the previously-implicit "drop all non-first fragments" behavior to be more in line with security rules: a non-first fragment is treated for the purposes of matching the ACL as a packet with the port match succeeding. This allows to change the behavior to permit the fragmented packets for the default "permit specific rules" ruleset, but also gives the flexibility to block the non-initial fragments by inserting into the begining a bogus rule which would deny the L4 traffic. Also, add a knob which allows to potentially turn this behavior off in case of a dire need (and revert to dropping all non-initial fragments), via a debug CLI. Change-Id: I546b372b65ff2157d9c68b1d32f9e644f1dd71b4 Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com> (cherry picked from commit 9fc0c26c6b28fd6c8b8142ea52f52eafa7e8c7ac)
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