db10602b76
Enabling crypto devs to specify the minimum headroom and tailroom it expects in the mbuf. For net PMDs, standard headroom has to be honoured by applications, which is not strictly followed for crypto devs. This prevents crypto devs from using free space in mbuf (available as head/tailroom) for internal requirements in crypto operations. Addition of head/tailroom requirement will help PMDs to communicate such requirements to the application. The availability and use of head/tailroom is an optimization if the hardware supports use of head/tailroom for crypto-op info. For devices that do not support using the head/tailroom, they can continue to operate without any performance-drop. Signed-off-by: Anoob Joseph <anoob.joseph@caviumnetworks.com> Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
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