> Subject: [PATCH v6 00/21] lib: add pdcp protocol > > Add Packet Data Convergence Protocol (PDCP) processing library. > > The library is similar to lib_ipsec which provides IPsec processing > capabilities in DPDK. > > PDCP would involve roughly the following operations, > 1. Transfer of user plane data > 2. Transfer of control plane data > 3. Header compression > 4. Uplink data compression > 5. Ciphering and integrity protection > > PDCP library provides following control path APIs that is used to > configure various PDCP entities, > 1. rte_pdcp_entity_establish() > 2. rte_pdcp_entity_suspend() > 3. rte_pdcp_entity_release() > > PDCP process is split into 2 parts. One before crypto processing > (rte_pdcp_pkt_pre_process()) and one after crypto processing > (rte_pdcp_pkt_post_process()). Since cryptodev dequeue can return crypto > operations belonging to multiple entities, rte_pdcp_pkt_crypto_group() > is added to help grouping crypto operations belonging to same entity. > > Similar to lib IPsec, lib PDCP would allow application to use same API > sequence while leveraging protocol offload features enabled by rte_security > library. Lib PDCP would internally change the handles registered for > *pre_process* and *post_process* based on features enabled in the entity. > > Lib PDCP would create the required sessions on the device provided in entity > to > minimize the application requirements. Also, the crypto_op allocation and free > would also be done internally by lib PDCP to allow the library to create > crypto ops as required for the input packets. For example, when control PDUs > are > received, no cryptodev enqueue-dequeue is expected for the same and lib PDCP > is expected to handle it differently. > > Lib PDCP utilizes reorder library for implementing in-order delivery. It > utilizes bitmap library for implementing status reports and track the COUNT > value of the packets received. To allow application to choose timer > implementation of choice, lib PDCP allows application to configure handles > that > can be used for starting & stopping timers. Upon expiry, application can call > corresponding PDCP API(``rte_pdcp_t_reordering_expiry_handle``) for handling > the > event. Unit tests are added to verify both rte_timer based timers as well as > rte_eventdev based timers. > > PDCP tracks the sequence number of the received packets and during events > such > as re-establishment, it is required to generate reports and transmit to the > peer. This series introduces ``rte_pdcp_control_pdu_create`` for handling > control PDU generation. > > Changes in v6: > - Rebased > - Minor udpates to documentation (Akhil)
Series Acked-by: Akhil Goyal <gak...@marvell.com> Applied to dpdk-next-crypto Thanks.
