Re: [dpdk-stable] [PATCH 18.11] examples/ipsec-secgw: fix inline modes

[Kevin Traynor <ktraynor@redhat.com>]

On 10/09/2019 10:32, Mariusz Drost wrote:
> [ upstream commit b1a3ac782d6020e6877e97a067613bbb2b8564b1 ]
> 
> Application ipsec-secgw is not working for IPv4 transport mode and for
> IPv6 both transport and tunnel mode.
> 
> IPv6 tunnel mode is not working due to wrongly assigned fields of
> security association patterns, as it was IPv4, during creation of
> inline crypto session.
> 
> IPv6 and IPv4 transport mode is iterating through security capabilities
> until it reaches tunnel, which causes session to be created as tunnel,
> instead of transport. Another issue, is that config file does not
> provide source and destination ip addresses for transport mode, which
> are required by NIC to perform inline crypto. It uses default addresses
> stored in security association (all zeroes), which causes dropped
> packages.
> 
> To fix that, reorganization of code in create_session() is needed,
> to behave appropriately to given protocol (IPv6/IPv4). Change in
> iteration through security capabilities is also required, to check
> for expected mode (not only tunnel).
> 
> For lack of addresses issue, some resolving mechanism is needed.
> Approach is to store addresses in security association, as it is
> for tunnel mode. Difference is that they are obtained from sp rules,
> instead of config file. To do that, sp[4/6]_spi_present() function
> is used to find addresses based on spi value, and then stored in
> corresponding sa rule. This approach assumes, that every sp rule
> for inline crypto have valid addresses, as well as range of addresses
> is not supported.
> 
> New flags for ipsec_sa structure are required to distinguish between
> IPv4 and IPv6 transport modes. Because of that, there is need to
> change all checks done on these flags, so they work as expected.
> 
> Fixes: ec17993a145a ("examples/ipsec-secgw: support security offload")
> Fixes: 9a0752f498d2 ("net/ixgbe: enable inline IPsec")
> 
> Signed-off-by: Mariusz Drost <mariuszx.drost@intel.com>
> ---

Thanks, added to the queued commits.