[net-next,v4 0/8] cn10k-ipsec: Add outbound inline ipsec support

[Bharat Bhushan <bbhushan2@marvell.com>]

This patch series adds outbound inline ipsec support on Marvell
cn10k series of platform. One crypto hardware logical function
(cpt-lf) per netdev is required for inline ipsec outbound
functionality. Software prepare and submit crypto hardware
(CPT) instruction for outbound inline ipsec crypto mode offload.
The CPT instruction have details for encryption and authentication
Crypto hardware encrypt, authenticate and provide the ESP packet
to network hardware logic to transmit ipsec packet.

First patch makes dma memory writable for in-place encryption,
Second patch moves code to common file, Third patch disable
backpressure on crypto (CPT) and network (NIX) hardware.
Patch four onwards enables inline outbound ipsec.

v3->v4:
 - Few error messages in datapath removed and some moved
   under netif_msg_tx_err().
 - Added check for crypto offload (XFRM_DEV_OFFLOAD_CRYPTO)
   Thanks "Leon Romanovsky" for pointing out
 - Fixed codespell error as per comment from Simon Horman 
 - Added some other cleanup comment from Kalesh Anakkur Purayil

v2->v3:
 - Fix smatch and sparse erros (Comment from Simon Horman)
 - Fix build error with W=1 (Comment from Simon Horman)
   https://patchwork.kernel.org/project/netdevbpf/patch/20240513105446.297451-6-bbhushan2@marvell.com/
 - Some other minor cleanup as per comment
   https://www.spinics.net/lists/netdev/msg997197.html

v1->v2:
 - Fix compilation error to build driver a module
 - Use dma_wmb() instead of architecture specific barrier
 - Fix couple of other compilation warnings

Bharat Bhushan (8):
  octeontx2-pf: map skb data as device writeable
  octeontx2-pf: Move skb fragment map/unmap to common code
  octeontx2-af: Disable backpressure between CPT and NIX
  cn10k-ipsec: Initialize crypto hardware for outb inline ipsec
  cn10k-ipsec: Add SA add/delete support for outb inline ipsec
  cn10k-ipsec: Process inline ipsec transmit offload
  cn10k-ipsec: Allow inline ipsec offload for skb with SA
  cn10k-ipsec: Enable outbound inline ipsec offload

 .../net/ethernet/marvell/octeontx2/af/mbox.h  |    4 +
 .../ethernet/marvell/octeontx2/af/rvu_nix.c   |   74 +-
 .../ethernet/marvell/octeontx2/nic/Makefile   |    1 +
 .../marvell/octeontx2/nic/cn10k_ipsec.c       | 1078 +++++++++++++++++
 .../marvell/octeontx2/nic/cn10k_ipsec.h       |  258 ++++
 .../marvell/octeontx2/nic/otx2_common.c       |   99 +-
 .../marvell/octeontx2/nic/otx2_common.h       |   25 +
 .../marvell/octeontx2/nic/otx2_dcbnl.c        |    3 +
 .../ethernet/marvell/octeontx2/nic/otx2_pf.c  |   19 +-
 .../marvell/octeontx2/nic/otx2_txrx.c         |   65 +-
 .../marvell/octeontx2/nic/otx2_txrx.h         |    3 +
 .../ethernet/marvell/octeontx2/nic/otx2_vf.c  |   10 +-
 12 files changed, 1585 insertions(+), 54 deletions(-)
 create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/cn10k_ipsec.c
 create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/cn10k_ipsec.h

-- 
2.34.1