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authorNeale Ranns <nranns@cisco.com>2019-04-02 08:13:33 +0000
committerDamjan Marion <dmarion@me.com>2019-12-17 17:57:24 +0000
commitf62a8c013c6e22c012b9d7df2ef463a6370cf1ce (patch)
tree0448d4b53340b84e1a8aca87ec57133c503026da /src/vnet/ip/ip_api.c
parentf2bde7ac51123a0a46334b4ec55e2aceae031db7 (diff)
ipsec: bind an SA to a worker
the sequence number increment and the anti-replay window checks must be atomic. Given the vector nature of VPP we can't simply use atomic increments for sequence numbers, since a vector on thread 1 with lower sequence numbers could be 'overtaken' by packets on thread 2 with higher sequence numbers. The anti-replay logic requires a critical section, not just atomics, and we don't want that. So when the SA see the first packet it is bound to that worker all subsequent packets, that arrive on a different worker, are subject to a handoff. Type: feature Change-Id: Ia20a8645fb50622ea6235ab015a537f033d531a4 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/ip/ip_api.c')
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