RE: [PATCH v3 1/2] security: add fallback security processing and Rx inject

[Akhil Goyal <gakhil@marvell.com>]

> Subject: [PATCH v3 1/2] security: add fallback security processing and Rx inject
> 
> Add alternate datapath API for security processing which would do Rx
> injection (similar to loopback) after successful security processing.
> 
> With inline protocol offload, variable part of the session context
> (AR windows, lifetime etc in case of IPsec), is not accessible to the
> application. If packets are not getting processed in the inline path
> due to non security reasons (such as outer fragmentation or rte_flow
> packet steering limitations), then the packet cannot be security
> processed as the session context is private to the PMD and security
> library doesn't provide alternate APIs to make use of the same session.
> 
> Introduce new API and Rx injection as fallback mechanism to security
> processing failures due to non-security reasons. For example, when there
> is outer fragmentation and PMD doesn't support reassembly of outer
> fragments, application would receive fragments which it can then
> reassemble. Post successful reassembly, packet can be submitted for
> security processing and Rx inject. The packets can be then received in
> the application as normal inline protocol processed packets.
> 
> Same API can be leveraged in lookaside protocol offload mode to inject
> packet to Rx. This would help in using rte_flow based packet parsing
> after security processing. For example, with IPsec, this will help in
> flow splitting after IPsec processing is done.
> 
> In both inline protocol capable ethdevs and lookaside protocol capable
> cryptodevs, the packet would be received back in eth port & queue based
> on rte_flow rules and packet parsing after security processing. The API
> would behave like a loopback but with the additional security
> processing.
> 
> Signed-off-by: Anoob Joseph <anoobj@marvell.com>
> Signed-off-by: Vidya Sagar Velumuri <vvelumuri@marvell.com>
> ---
> v3:
> * Resolved compilation error with 32 bit build
Series Acked-by: Akhil Goyal <gakhil@marvell.com>

Please add release notes for the new feature.