Merge branch 'octeontx2-macsec-offload'

Subbaraya Sundeep says:

====================
net: Introduce macsec hardware offload for cn10k platform

CN10K-B and CNF10K-B variaints of CN10K silicon has macsec block(MCS)
to encrypt and decrypt packets at MAC/hardware level. This block is a
global resource with hardware resources like SecYs, SCs and SAs
and is in between NIX block and RPM LMAC. CN10K-B silicon has only
one MCS block which receives packets from all LMACS whereas
CNF10K-B has seven MCS blocks for seven LMACs. Both MCS blocks are
similar in operation except for few register offsets and some
configurations require writing to different registers. This patchset
introduces macsec hardware offloading support. AF driver manages hardware
resources and PF driver consumes them when macsec hardware offloading
is needed.

Patch 1 adds basic pci driver for both CN10K-B and CNF10K-B
silicons and initializes hardware block.
Patches 2 and 3 adds mailboxes to init, reset and manage
resources of the MCS block
Patch 4 adds a low priority rule in MCS TCAM so that the
traffic which do not need macsec processing can be sent/received
Patch 5 adds macsec stats collection support
Patch 6 adds interrupt handling support and any event in which
AF consumer is interested can be notified via mbox notification
Patch 7 adds debugfs support which helps in debugging packet
path
Patch 8 introduces macsec hardware offload feature for
PF netdev driver.

v3 changes:
 Fixed clang and sparse warnings

v2 changes:
 Fix build error by changing #ifdef CONFIG_MACSEC to
 #if IS_ENABLED(CONFIG_MACSEC)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index fa9348d6a4f4..5803d7f9137c 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -858,6 +858,15 @@ static void otx2_handle_link_event(struct otx2_nic *pf)
 	}
 }
 
+int otx2_mbox_up_handler_mcs_intr_notify(struct otx2_nic *pf,
+					 struct mcs_intr_info *event,
+					 struct msg_rsp *rsp)
+{
+	cn10k_handle_mcs_event(pf, event);
+
+	return 0;
+}
+
 int otx2_mbox_up_handler_cgx_link_event(struct otx2_nic *pf,
 					struct cgx_link_info_msg *msg,
 					struct msg_rsp *rsp)
@@ -917,6 +926,7 @@ static int otx2_process_mbox_msg_up(struct otx2_nic *pf,
 		return err;						\
 	}
 MBOX_UP_CGX_MESSAGES
+MBOX_UP_MCS_MESSAGES
 #undef M
 		break;
 	default:
@@ -2764,6 +2774,10 @@ static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (err)
 		goto err_ptp_destroy;
 
+	err = cn10k_mcs_init(pf);
+	if (err)
+		goto err_del_mcam_entries;
+
 	if (pf->flags & OTX2_FLAG_NTUPLE_SUPPORT)
 		netdev->hw_features |= NETIF_F_NTUPLE;
 
@@ -2978,6 +2992,8 @@ static void otx2_remove(struct pci_dev *pdev)
 		otx2_config_pause_frm(pf);
 	}
 
+	cn10k_mcs_free(pf);
+
 #ifdef CONFIG_DCB
 	/* Disable PFC config */
 	if (pf->pfc_en) {