octeontx2-af: Add MACSEC capability flag

MACSEC block may be fused out on some silicons hence modify
get_hw_cap mailbox message to set a capability flag in its
response message based on MACSEC block availability.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/1747894528-4611-1-git-send-email-sbhatta@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Author: Subbaraya Sundeep

drivers/net/ethernet/marvell/octeontx2/af/mbox.h

@@ -524,6 +524,8 @@ struct get_hw_cap_rsp {
 	u8 nix_fixed_txschq_mapping; /* Schq mapping fixed or flexible */
 	u8 nix_shaping;		     /* Is shaping and coloring supported */
 	u8 npc_hash_extract;	/* Is hash extract supported */
+#define HW_CAP_MACSEC		BIT_ULL(1)
+	u64 hw_caps;
 };
 
 /* CGX mbox message formats */

drivers/net/ethernet/marvell/octeontx2/af/rvu.c

@@ -2033,6 +2033,9 @@ int rvu_mbox_handler_get_hw_cap(struct rvu *rvu, struct msg_req *req,
 	rsp->nix_shaping = hw->cap.nix_shaping;
 	rsp->npc_hash_extract = hw->cap.npc_hash_extract;
 
+	if (rvu->mcs_blk_cnt)
+		rsp->hw_caps = HW_CAP_MACSEC;
+
 	return 0;
 }