octeontx2-af: Install ucast and bcast pkt forwarding rules

Upon NIXLF_ALLOC install a unicast forwarding rule in NPC MCAM
like below
 - Match pkt DMAC with NIXLF attached PF/VF's MAC address.
 - Ingress channel
 - Action is UCAST
 - Forward to PF_FUNC of this NIXLF
And broadcast pkt forwarding rule as
 - Match L2B bit in MCAM search key
 - Ingress channel
 - Action is UCAST, for now, later it will be changed to MCAST.
Only PFs can install this rule

Upon NIXLF_FREE disable all MCAM entries in use by that NIXLF.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -240,4 +240,23 @@ struct npc_kpu_pkind_cpi_def {
 	u64 ena            : 1;
 #endif
 };
+
+struct nix_rx_action {
+#if defined(__BIG_ENDIAN_BITFIELD)
+	u64	rsvd_63_61	:3;
+	u64	flow_key_alg	:5;
+	u64	match_id	:16;
+	u64	index		:20;
+	u64	pf_func		:16;
+	u64	op		:4;
+#else
+	u64	op		:4;
+	u64	pf_func		:16;
+	u64	index		:20;
+	u64	match_id	:16;
+	u64	flow_key_alg	:5;
+	u64	rsvd_63_61	:3;
+#endif
+};
+
 #endif /* NPC_H */

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

@@ -347,4 +347,9 @@ int rvu_npc_init(struct rvu *rvu);
 void rvu_npc_freemem(struct rvu *rvu);
 int rvu_npc_get_pkind(struct rvu *rvu, u16 pf);
 void rvu_npc_set_pkind(struct rvu *rvu, int pkind, struct rvu_pfvf *pfvf);
+void rvu_npc_install_ucast_entry(struct rvu *rvu, u16 pcifunc,
+				 int nixlf, u64 chan, u8 *mac_addr);
+void rvu_npc_install_bcast_match_entry(struct rvu *rvu, u16 pcifunc,
+				       int nixlf, u64 chan);
+void rvu_npc_disable_mcam_entries(struct rvu *rvu, u16 pcifunc, int nixlf);
 #endif /* RVU_H */

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

@@ -151,13 +151,24 @@ static int nix_interface_init(struct rvu *rvu, u16 pcifunc, int type, int nixlf)
 		break;
 	}
 
+	/* Add a UCAST forwarding rule in MCAM with this NIXLF attached
+	 * RVU PF/VF's MAC address.
+	 */
+	rvu_npc_install_ucast_entry(rvu, pcifunc, nixlf,
+				    pfvf->rx_chan_base, pfvf->mac_addr);
+
 	/* Add this PF_FUNC to bcast pkt replication list */
 	err = nix_update_bcast_mce_list(rvu, pcifunc, true);
 	if (err) {
 		dev_err(rvu->dev,
 			"Bcast list, failed to enable PF_FUNC 0x%x\n",
 			pcifunc);
+		return err;
 	}
+
+	rvu_npc_install_bcast_match_entry(rvu, pcifunc,
+					  nixlf, pfvf->rx_chan_base);
+
 	return 0;
 }
 
@@ -172,6 +183,9 @@ static void nix_interface_deinit(struct rvu *rvu, u16 pcifunc, u8 nixlf)
 			"Bcast list, failed to disable PF_FUNC 0x%x\n",
 			pcifunc);
 	}
+
+	/* Free and disable any MCAM entries used by this NIX LF */
+	rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
 }
 
 static void nix_setup_lso_tso_l3(struct rvu *rvu, int blkaddr,