Merge branch 'octeontx2-af-next'

Ratheesh Kannoth says:

====================
octeontx2: *** Exact Match Table and Field hash ***

*** Exact match table and Field hash support for CN10KB silicon ***

Ratheesh Kannoth (11):

These patch series enables exact match table in CN10KB silicon. Legacy
silicon used NPC mcam to do packet fields/channel matching for NPC rules.
NPC mcam resources exahausted as customer use case increased.
Supporting many DMAC filter becomes a challenge, as RPM based filter
count is less. Exact match table has 4way 2K entry table and a 32 entry
fully associative cam table. Second table is to handle hash
table collision overflows in 4way 2K entry table. Enabling exact match table
results in KEX key to be appended with Hit/Miss status. This can be used
to match in NPC mcam for a more generic rule and drop those packets than
having DMAC drop rules for each DMAC entry in NPC mcam.

octeontx2-af: Exact match support
octeontx2-af: Exact match scan from kex profile
octeontx2-af: devlink configuration support
octeontx2-af: FLR handler for exact match table.
octeontx2-af: Drop rules for NPC MCAM
octeontx2-af: Debugsfs support for exact match.
octeontx2: Modify mbox request and response structures
octeontx2-af: Wrapper functions for mac addr add/del/update/reset
octeontx2-af: Invoke exact match functions if supported
octeontx2-pf: Add support for exact match table.
octeontx2-af: Enable Exact match flag in kex profile

Suman Ghosh (1):

CN10KB variant of CN10K series of silicons supports
a new feature where in a large protocol field
(eg 128bit IPv6 DIP) can be condensed into a small
hashed 32bit data. This saves a lot of space in MCAM key
and allows user to add more protocol fields into the filter.
A max of two such protocol data can be hashed.
This patch adds support for hashing IPv6 SIP and/or DIP.
====================

Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/marvell/octeontx2/af/Makefile

···
 rvu_af-y := cgx.o rvu.o rvu_cgx.o rvu_npa.o rvu_nix.o \
 		  rvu_reg.o rvu_npc.o rvu_debugfs.o ptp.o rvu_npc_fs.o \
 		  rvu_cpt.o rvu_devlink.o rpm.o rvu_cn10k.o rvu_switch.o \
-		  rvu_sdp.o
+		  rvu_sdp.o rvu_npc_hash.o

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

···
 M(CGX_FEATURES_GET,	0x21B, cgx_features_get, msg_req,		\
 			       cgx_features_info_msg)			\
 M(RPM_STATS,		0x21C, rpm_stats, msg_req, rpm_stats_rsp)	\
-M(CGX_MAC_ADDR_RESET,	0x21D, cgx_mac_addr_reset, msg_req, msg_rsp)	\
+M(CGX_MAC_ADDR_RESET,	0x21D, cgx_mac_addr_reset, cgx_mac_addr_reset_req, \
+							msg_rsp) \
 M(CGX_MAC_ADDR_UPDATE,	0x21E, cgx_mac_addr_update, cgx_mac_addr_update_req, \
-			       msg_rsp)					\
+						    cgx_mac_addr_update_rsp) \
 M(CGX_PRIO_FLOW_CTRL_CFG, 0x21F, cgx_prio_flow_ctrl_cfg, cgx_pfc_cfg,  \
 				 cgx_pfc_rsp)                               \
 /* NPA mbox IDs (range 0x400 - 0x5FF) */				\
···
 M(NPC_MCAM_GET_STATS, 0x6012, npc_mcam_entry_stats,                     \
 				   npc_mcam_get_stats_req,              \
 				   npc_mcam_get_stats_rsp)              \
+M(NPC_GET_SECRET_KEY, 0x6013, npc_get_secret_key,                     \
+				   npc_get_secret_key_req,              \
+				   npc_get_secret_key_rsp)              \
 /* NIX mbox IDs (range 0x8000 - 0xFFFF) */				\
 M(NIX_LF_ALLOC,		0x8000, nix_lf_alloc,				\
 				 nix_lf_alloc_req, nix_lf_alloc_rsp)	\
···
 	struct mbox_msghdr hdr;
 	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 */
 };
 
 /* CGX mbox message formats */
···
 struct cgx_mac_addr_set_or_get {
 	struct mbox_msghdr hdr;
 	u8 mac_addr[ETH_ALEN];
+	u32 index;
 };
 
 /* Structure for requesting the operation to
···
  */
 struct cgx_mac_addr_add_rsp {
 	struct mbox_msghdr hdr;
-	u8 index;
+	u32 index;
 };
 
 /* Structure for requesting the operation to
···
  */
 struct cgx_mac_addr_del_req {
 	struct mbox_msghdr hdr;
-	u8 index;
+	u32 index;
 };
 
 /* Structure for response against the operation to
···
  */
 struct cgx_max_dmac_entries_get_rsp {
 	struct mbox_msghdr hdr;
-	u8 max_dmac_filters;
+	u32 max_dmac_filters;
 };
 
 struct cgx_link_user_info {
···
 	int status;
 };
 
+struct cgx_mac_addr_reset_req {
+	struct mbox_msghdr hdr;
+	u32 index;
+};
+
 struct cgx_mac_addr_update_req {
 	struct mbox_msghdr hdr;
 	u8 mac_addr[ETH_ALEN];
-	u8 index;
+	u32 index;
+};
+
+struct cgx_mac_addr_update_rsp {
+	struct mbox_msghdr hdr;
+	u32 index;
 };
 
 #define RVU_LMAC_FEAT_FC		BIT_ULL(0) /* pause frames */
···
 	u8 stat_ena; /* enabled */
 };
 
+struct npc_get_secret_key_req {
+	struct mbox_msghdr hdr;
+	u8 intf;
+};
+
+struct npc_get_secret_key_rsp {
+	struct mbox_msghdr hdr;
+	u64 secret_key[3];
+};
+
 enum ptp_op {
 	PTP_OP_ADJFINE = 0,
 	PTP_OP_GET_CLOCK = 1,
···
 	LMAC_AF_ERR_PERM_DENIED		= -1103,
 	LMAC_AF_ERR_PFC_ENADIS_PERM_DENIED       = -1104,
 	LMAC_AF_ERR_8023PAUSE_ENADIS_PERM_DENIED = -1105,
+	LMAC_AF_ERR_EXACT_MATCH_TBL_ADD_FAILED = -1108,
+	LMAC_AF_ERR_EXACT_MATCH_TBL_DEL_FAILED = -1109,
+	LMAC_AF_ERR_EXACT_MATCH_TBL_LOOK_UP_FAILED = -1110,
 };
 
 #endif /* MBOX_H */

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

···
 
 #define NPC_KEX_CHAN_MASK	0xFFFULL
 
+#define SET_KEX_LD(intf, lid, ltype, ld, cfg)	\
+	rvu_write64(rvu, blkaddr,	\
+		    NPC_AF_INTFX_LIDX_LTX_LDX_CFG(intf, lid, ltype, ld), cfg)
+
+#define SET_KEX_LDFLAGS(intf, ld, flags, cfg)	\
+	rvu_write64(rvu, blkaddr,	\
+		    NPC_AF_INTFX_LDATAX_FLAGSX_CFG(intf, ld, flags), cfg)
+
 enum NPC_LID_E {
 	NPC_LID_LA = 0,
 	NPC_LID_LB,
···
 	NPC_ERRLEV,
 	NPC_ERRCODE,
 	NPC_LXMB,
+	NPC_EXACT_RESULT,
 	NPC_LA,
 	NPC_LB,
 	NPC_LC,
···
 	u64	rsvd_63_61	:3;
 #endif
 };
+
+/* NPC_AF_INTFX_KEX_CFG field masks */
+#define NPC_EXACT_NIBBLE_START		40
+#define NPC_EXACT_NIBBLE_END		43
+#define NPC_EXACT_NIBBLE		GENMASK_ULL(43, 40)
+
+/* NPC_EXACT_KEX_S nibble definitions for each field */
+#define NPC_EXACT_NIBBLE_HIT		BIT_ULL(40)
+#define NPC_EXACT_NIBBLE_OPC		BIT_ULL(40)
+#define NPC_EXACT_NIBBLE_WAY		BIT_ULL(40)
+#define NPC_EXACT_NIBBLE_INDEX		GENMASK_ULL(43, 41)
+
+#define NPC_EXACT_RESULT_HIT		BIT_ULL(0)
+#define NPC_EXACT_RESULT_OPC		GENMASK_ULL(2, 1)
+#define NPC_EXACT_RESULT_WAY		GENMASK_ULL(4, 3)
+#define NPC_EXACT_RESULT_IDX		GENMASK_ULL(15, 5)
 
 /* NPC_AF_INTFX_KEX_CFG field masks */
 #define NPC_PARSE_NIBBLE		GENMASK_ULL(30, 0)

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

···
 
 /* Rx parse key extract nibble enable */
 #define NPC_PARSE_NIBBLE_INTF_RX	(NPC_PARSE_NIBBLE_CHAN | \
-					 NPC_PARSE_NIBBLE_ERRCODE | \
+					 NPC_PARSE_NIBBLE_L2L3_BCAST | \
 					 NPC_PARSE_NIBBLE_LA_LTYPE | \
 					 NPC_PARSE_NIBBLE_LB_LTYPE | \
 					 NPC_PARSE_NIBBLE_LC_LTYPE | \
···
 	.kpu_version = NPC_KPU_PROFILE_VER,
 	.keyx_cfg = {
 		/* nibble: LA..LE (ltype only) + Error code + Channel */
-		[NIX_INTF_RX] = ((u64)NPC_MCAM_KEY_X2 << 32) | NPC_PARSE_NIBBLE_INTF_RX,
+		[NIX_INTF_RX] = ((u64)NPC_MCAM_KEY_X2 << 32) | NPC_PARSE_NIBBLE_INTF_RX |
+						(u64)NPC_EXACT_NIBBLE_HIT,
 		/* nibble: LA..LE (ltype only) */
 		[NIX_INTF_TX] = ((u64)NPC_MCAM_KEY_X2 << 32) | NPC_PARSE_NIBBLE_INTF_TX,
 	},

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

···
 #include "ptp.h"
 
 #include "rvu_trace.h"
+#include "rvu_npc_hash.h"
 
 #define DRV_NAME	"rvu_af"
 #define DRV_STRING      "Marvell OcteonTX2 RVU Admin Function Driver"
···
 	hw->cap.nix_tx_link_bp = true;
 	hw->cap.nix_rx_multicast = true;
 	hw->cap.nix_shaper_toggle_wait = false;
+	hw->cap.npc_hash_extract = false;
+	hw->cap.npc_exact_match_enabled = false;
 	hw->rvu = rvu;
 
 	if (is_rvu_pre_96xx_C0(rvu)) {
···
 
 	if (!is_rvu_otx2(rvu))
 		hw->cap.per_pf_mbox_regs = true;
+
+	if (is_rvu_npc_hash_extract_en(rvu))
+		hw->cap.npc_hash_extract = true;
 }
 
 /* Poll a RVU block's register 'offset', for a 'zero'
···
 		goto cgx_err;
 	}
 
+	err = rvu_npc_exact_init(rvu);
+	if (err) {
+		dev_err(rvu->dev, "failed to initialize exact match table\n");
+		return err;
+	}
+
 	/* Assign MACs for CGX mapped functions */
 	rvu_setup_pfvf_macaddress(rvu);
 
···
 
 	rsp->nix_fixed_txschq_mapping = hw->cap.nix_fixed_txschq_mapping;
 	rsp->nix_shaping = hw->cap.nix_shaping;
+	rsp->npc_hash_extract = hw->cap.npc_hash_extract;
 
 	return 0;
 }
···
 
 static void __rvu_flr_handler(struct rvu *rvu, u16 pcifunc)
 {
+	if (rvu_npc_exact_has_match_table(rvu))
+		rvu_npc_exact_reset(rvu, pcifunc);
+
 	mutex_lock(&rvu->flr_lock);
 	/* Reset order should reflect inter-block dependencies:
 	 * 1. Reset any packet/work sources (NIX, CPT, TIM)

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

···
 	bool	per_pf_mbox_regs; /* PF mbox specified in per PF registers ? */
 	bool	programmable_chans; /* Channels programmable ? */
 	bool	ipolicer;
+	bool	npc_hash_extract; /* Hash extract enabled ? */
+	bool	npc_exact_match_enabled; /* Exact match supported ? */
 };
 
 struct rvu_hwinfo {
···
 	struct rvu	 *rvu;
 	struct npc_pkind pkind;
 	struct npc_mcam  mcam;
+	struct npc_exact_table *table;
 };
 
 struct mbox_wq_info {
···
 	const struct npc_kpu_profile_action	*ikpu; /* array[pkinds] */
 	const struct npc_kpu_profile	*kpu; /* array[kpus] */
 	struct npc_mcam_kex		*mkex;
+	struct npc_mcam_kex_hash	*mkex_hash;
 	bool				custom;
 	size_t				pkinds;
 	size_t				kpus;
···
 	return (midr == PCI_REVISION_ID_96XX || midr == PCI_REVISION_ID_95XX ||
 		midr == PCI_REVISION_ID_95XXN || midr == PCI_REVISION_ID_98XX ||
 		midr == PCI_REVISION_ID_95XXMM || midr == PCI_REVISION_ID_95XXO);
+}
+
+static inline bool is_rvu_npc_hash_extract_en(struct rvu *rvu)
+{
+	u64 npc_const3;
+
+	npc_const3 = rvu_read64(rvu, BLKADDR_NPC, NPC_AF_CONST3);
+	if (!(npc_const3 & BIT_ULL(62)))
+		return false;
+
+	return true;
 }
 
 static inline u16 rvu_nix_chan_cgx(struct rvu *rvu, u8 cgxid,
···
 u32 convert_bytes_to_dwrr_mtu(u32 bytes);
 
 /* NPC APIs */
-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);
···
 				    u64 chan);
 void rvu_npc_enable_allmulti_entry(struct rvu *rvu, u16 pcifunc, int nixlf,
 				   bool enable);
+
 void npc_enadis_default_mce_entry(struct rvu *rvu, u16 pcifunc,
 				  int nixlf, int type, bool enable);
 void rvu_npc_disable_mcam_entries(struct rvu *rvu, u16 pcifunc, int nixlf);
+bool rvu_npc_enable_mcam_by_entry_index(struct rvu *rvu, int entry, int intf, bool enable);
 void rvu_npc_free_mcam_entries(struct rvu *rvu, u16 pcifunc, int nixlf);
 void rvu_npc_disable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf);
 void rvu_npc_enable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf);
 void rvu_npc_update_flowkey_alg_idx(struct rvu *rvu, u16 pcifunc, int nixlf,
 				    int group, int alg_idx, int mcam_index);
+
 void rvu_npc_get_mcam_entry_alloc_info(struct rvu *rvu, u16 pcifunc,
 				       int blkaddr, int *alloc_cnt,
 				       int *enable_cnt);
···
 			     int type);
 bool is_mcam_entry_enabled(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr,
 			   int index);
+int rvu_npc_init(struct rvu *rvu);
+int npc_install_mcam_drop_rule(struct rvu *rvu, int mcam_idx, u16 *counter_idx,
+			       u64 chan_val, u64 chan_mask, u64 exact_val, u64 exact_mask,
+			       u64 bcast_mcast_val, u64 bcast_mcast_mask);
+void npc_mcam_rsrcs_reserve(struct rvu *rvu, int blkaddr, int entry_idx);
 
 /* CPT APIs */
 int rvu_cpt_register_interrupts(struct rvu *rvu);

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

···
 #include "lmac_common.h"
 #include "rvu_reg.h"
 #include "rvu_trace.h"
+#include "rvu_npc_hash.h"
 
 struct cgx_evq_entry {
 	struct list_head evq_node;
···
 	if (!is_cgx_config_permitted(rvu, pcifunc))
 		return;
 
+	if (rvu_npc_exact_has_match_table(rvu)) {
+		rvu_npc_exact_reset(rvu, pcifunc);
+		return;
+	}
+
 	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
 	cgx_dev = cgx_get_pdata(cgx_id);
 	lmac_count = cgx_get_lmac_cnt(cgx_dev);
···
 	if (!is_cgx_config_permitted(rvu, req->hdr.pcifunc))
 		return -EPERM;
 
+	if (rvu_npc_exact_has_match_table(rvu))
+		return rvu_npc_exact_mac_addr_set(rvu, req, rsp);
+
 	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
 
 	cgx_lmac_addr_set(cgx_id, lmac_id, req->mac_addr);
···
 
 	if (!is_cgx_config_permitted(rvu, req->hdr.pcifunc))
 		return -EPERM;
+
+	if (rvu_npc_exact_has_match_table(rvu))
+		return rvu_npc_exact_mac_addr_add(rvu, req, rsp);
 
 	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
 	rc = cgx_lmac_addr_add(cgx_id, lmac_id, req->mac_addr);
···
 	if (!is_cgx_config_permitted(rvu, req->hdr.pcifunc))
 		return -EPERM;
 
+	if (rvu_npc_exact_has_match_table(rvu))
+		return rvu_npc_exact_mac_addr_del(rvu, req, rsp);
+
 	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
 	return cgx_lmac_addr_del(cgx_id, lmac_id, req->index);
 }
···
 	 */
 	if (!is_cgx_config_permitted(rvu, req->hdr.pcifunc)) {
 		rsp->max_dmac_filters = 0;
+		return 0;
+	}
+
+	if (rvu_npc_exact_has_match_table(rvu)) {
+		rsp->max_dmac_filters = rvu_npc_exact_get_max_entries(rvu);
 		return 0;
 	}
 
···
 	if (!is_cgx_config_permitted(rvu, req->hdr.pcifunc))
 		return -EPERM;
 
+	/* Disable drop on non hit rule */
+	if (rvu_npc_exact_has_match_table(rvu))
+		return rvu_npc_exact_promisc_enable(rvu, req->hdr.pcifunc);
+
 	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
 
 	cgx_lmac_promisc_config(cgx_id, lmac_id, true);
···
 
 	if (!is_cgx_config_permitted(rvu, req->hdr.pcifunc))
 		return -EPERM;
+
+	/* Disable drop on non hit rule */
+	if (rvu_npc_exact_has_match_table(rvu))
+		return rvu_npc_exact_promisc_disable(rvu, req->hdr.pcifunc);
 
 	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
 
···
 	return 0;
 }
 
-int rvu_mbox_handler_cgx_mac_addr_reset(struct rvu *rvu, struct msg_req *req,
+int rvu_mbox_handler_cgx_mac_addr_reset(struct rvu *rvu, struct cgx_mac_addr_reset_req *req,
 					struct msg_rsp *rsp)
 {
 	int pf = rvu_get_pf(req->hdr.pcifunc);
···
 		return LMAC_AF_ERR_PERM_DENIED;
 
 	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+
+	if (rvu_npc_exact_has_match_table(rvu))
+		return rvu_npc_exact_mac_addr_reset(rvu, req, rsp);
+
 	return cgx_lmac_addr_reset(cgx_id, lmac_id);
 }
 
 int rvu_mbox_handler_cgx_mac_addr_update(struct rvu *rvu,
 					 struct cgx_mac_addr_update_req *req,
-					 struct msg_rsp *rsp)
+					 struct cgx_mac_addr_update_rsp *rsp)
 {
 	int pf = rvu_get_pf(req->hdr.pcifunc);
 	u8 cgx_id, lmac_id;
 
 	if (!is_cgx_config_permitted(rvu, req->hdr.pcifunc))
 		return LMAC_AF_ERR_PERM_DENIED;
+
+	if (rvu_npc_exact_has_match_table(rvu))
+		return rvu_npc_exact_mac_addr_update(rvu, req, rsp);
 
 	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
 	return cgx_lmac_addr_update(cgx_id, lmac_id, req->mac_addr, req->index);

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

···
 #include "cgx.h"
 #include "lmac_common.h"
 #include "npc.h"
+#include "rvu_npc_hash.h"
 
 #define DEBUGFS_DIR_NAME "octeontx2"
 
···
 
 RVU_DEBUG_SEQ_FOPS(npc_mcam_rules, npc_mcam_show_rules, NULL);
 
+static int rvu_dbg_npc_exact_show_entries(struct seq_file *s, void *unused)
+{
+	struct npc_exact_table_entry *mem_entry[NPC_EXACT_TBL_MAX_WAYS] = { 0 };
+	struct npc_exact_table_entry *cam_entry;
+	struct npc_exact_table *table;
+	struct rvu *rvu = s->private;
+	int i, j;
+
+	u8 bitmap = 0;
+
+	table = rvu->hw->table;
+
+	mutex_lock(&table->lock);
+
+	/* Check if there is at least one entry in mem table */
+	if (!table->mem_tbl_entry_cnt)
+		goto dump_cam_table;
+
+	/* Print table headers */
+	seq_puts(s, "\n\tExact Match MEM Table\n");
+	seq_puts(s, "Index\t");
+
+	for (i = 0; i < table->mem_table.ways; i++) {
+		mem_entry[i] = list_first_entry_or_null(&table->lhead_mem_tbl_entry[i],
+							struct npc_exact_table_entry, list);
+
+		seq_printf(s, "Way-%d\t\t\t\t\t", i);
+	}
+
+	seq_puts(s, "\n");
+	for (i = 0; i < table->mem_table.ways; i++)
+		seq_puts(s, "\tChan  MAC                     \t");
+
+	seq_puts(s, "\n\n");
+
+	/* Print mem table entries */
+	for (i = 0; i < table->mem_table.depth; i++) {
+		bitmap = 0;
+		for (j = 0; j < table->mem_table.ways; j++) {
+			if (!mem_entry[j])
+				continue;
+
+			if (mem_entry[j]->index != i)
+				continue;
+
+			bitmap |= BIT(j);
+		}
+
+		/* No valid entries */
+		if (!bitmap)
+			continue;
+
+		seq_printf(s, "%d\t", i);
+		for (j = 0; j < table->mem_table.ways; j++) {
+			if (!(bitmap & BIT(j))) {
+				seq_puts(s, "nil\t\t\t\t\t");
+				continue;
+			}
+
+			seq_printf(s, "0x%x %pM\t\t\t", mem_entry[j]->chan,
+				   mem_entry[j]->mac);
+			mem_entry[j] = list_next_entry(mem_entry[j], list);
+		}
+		seq_puts(s, "\n");
+	}
+
+dump_cam_table:
+
+	if (!table->cam_tbl_entry_cnt)
+		goto done;
+
+	seq_puts(s, "\n\tExact Match CAM Table\n");
+	seq_puts(s, "index\tchan\tMAC\n");
+
+	/* Traverse cam table entries */
+	list_for_each_entry(cam_entry, &table->lhead_cam_tbl_entry, list) {
+		seq_printf(s, "%d\t0x%x\t%pM\n", cam_entry->index, cam_entry->chan,
+			   cam_entry->mac);
+	}
+
+done:
+	mutex_unlock(&table->lock);
+	return 0;
+}
+
+RVU_DEBUG_SEQ_FOPS(npc_exact_entries, npc_exact_show_entries, NULL);
+
+static int rvu_dbg_npc_exact_show_info(struct seq_file *s, void *unused)
+{
+	struct npc_exact_table *table;
+	struct rvu *rvu = s->private;
+	int i;
+
+	table = rvu->hw->table;
+
+	seq_puts(s, "\n\tExact Table Info\n");
+	seq_printf(s, "Exact Match Feature : %s\n",
+		   rvu->hw->cap.npc_exact_match_enabled ? "enabled" : "disable");
+	if (!rvu->hw->cap.npc_exact_match_enabled)
+		return 0;
+
+	seq_puts(s, "\nMCAM Index\tMAC Filter Rules Count\n");
+	for (i = 0; i < table->num_drop_rules; i++)
+		seq_printf(s, "%d\t\t%d\n", i, table->cnt_cmd_rules[i]);
+
+	seq_puts(s, "\nMcam Index\tPromisc Mode Status\n");
+	for (i = 0; i < table->num_drop_rules; i++)
+		seq_printf(s, "%d\t\t%s\n", i, table->promisc_mode[i] ? "on" : "off");
+
+	seq_puts(s, "\n\tMEM Table Info\n");
+	seq_printf(s, "Ways : %d\n", table->mem_table.ways);
+	seq_printf(s, "Depth : %d\n", table->mem_table.depth);
+	seq_printf(s, "Mask : 0x%llx\n", table->mem_table.mask);
+	seq_printf(s, "Hash Mask : 0x%x\n", table->mem_table.hash_mask);
+	seq_printf(s, "Hash Offset : 0x%x\n", table->mem_table.hash_offset);
+
+	seq_puts(s, "\n\tCAM Table Info\n");
+	seq_printf(s, "Depth : %d\n", table->cam_table.depth);
+
+	return 0;
+}
+
+RVU_DEBUG_SEQ_FOPS(npc_exact_info, npc_exact_show_info, NULL);
+
+static int rvu_dbg_npc_exact_drop_cnt(struct seq_file *s, void *unused)
+{
+	struct npc_exact_table *table;
+	struct rvu *rvu = s->private;
+	struct npc_key_field *field;
+	u16 chan, pcifunc;
+	int blkaddr, i;
+	u64 cfg, cam1;
+	char *str;
+
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+	table = rvu->hw->table;
+
+	field = &rvu->hw->mcam.rx_key_fields[NPC_CHAN];
+
+	seq_puts(s, "\n\t Exact Hit on drop status\n");
+	seq_puts(s, "\npcifunc\tmcam_idx\tHits\tchan\tstatus\n");
+
+	for (i = 0; i < table->num_drop_rules; i++) {
+		pcifunc = rvu_npc_exact_drop_rule_to_pcifunc(rvu, i);
+		cfg = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CFG(i, 0));
+
+		/* channel will be always in keyword 0 */
+		cam1 = rvu_read64(rvu, blkaddr,
+				  NPC_AF_MCAMEX_BANKX_CAMX_W0(i, 0, 1));
+		chan = field->kw_mask[0] & cam1;
+
+		str = (cfg & 1) ? "enabled" : "disabled";
+
+		seq_printf(s, "0x%x\t%d\t\t%llu\t0x%x\t%s\n", pcifunc, i,
+			   rvu_read64(rvu, blkaddr,
+				      NPC_AF_MATCH_STATX(table->counter_idx[i])),
+			   chan, str);
+	}
+
+	return 0;
+}
+
+RVU_DEBUG_SEQ_FOPS(npc_exact_drop_cnt, npc_exact_drop_cnt, NULL);
+
 static void rvu_dbg_npc_init(struct rvu *rvu)
 {
 	rvu->rvu_dbg.npc = debugfs_create_dir("npc", rvu->rvu_dbg.root);
···
 			    &rvu_dbg_npc_mcam_info_fops);
 	debugfs_create_file("mcam_rules", 0444, rvu->rvu_dbg.npc, rvu,
 			    &rvu_dbg_npc_mcam_rules_fops);
+
 	debugfs_create_file("rx_miss_act_stats", 0444, rvu->rvu_dbg.npc, rvu,
 			    &rvu_dbg_npc_rx_miss_act_fops);
+
+	if (!rvu->hw->cap.npc_exact_match_enabled)
+		return;
+
+	debugfs_create_file("exact_entries", 0444, rvu->rvu_dbg.npc, rvu,
+			    &rvu_dbg_npc_exact_entries_fops);
+
+	debugfs_create_file("exact_info", 0444, rvu->rvu_dbg.npc, rvu,
+			    &rvu_dbg_npc_exact_info_fops);
+
+	debugfs_create_file("exact_drop_cnt", 0444, rvu->rvu_dbg.npc, rvu,
+			    &rvu_dbg_npc_exact_drop_cnt_fops);
+
 }
 
 static int cpt_eng_sts_display(struct seq_file *filp, u8 eng_type)

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

···
 #include "rvu.h"
 #include "rvu_reg.h"
 #include "rvu_struct.h"
+#include "rvu_npc_hash.h"
 
 #define DRV_NAME "octeontx2-af"
 
···
 enum rvu_af_dl_param_id {
 	RVU_AF_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
 	RVU_AF_DEVLINK_PARAM_ID_DWRR_MTU,
+	RVU_AF_DEVLINK_PARAM_ID_NPC_EXACT_FEATURE_DISABLE,
 };
+
+static int rvu_af_npc_exact_feature_get(struct devlink *devlink, u32 id,
+					struct devlink_param_gset_ctx *ctx)
+{
+	struct rvu_devlink *rvu_dl = devlink_priv(devlink);
+	struct rvu *rvu = rvu_dl->rvu;
+	bool enabled;
+
+	enabled = rvu_npc_exact_has_match_table(rvu);
+
+	snprintf(ctx->val.vstr, sizeof(ctx->val.vstr), "%s",
+		 enabled ? "enabled" : "disabled");
+
+	return 0;
+}
+
+static int rvu_af_npc_exact_feature_disable(struct devlink *devlink, u32 id,
+					    struct devlink_param_gset_ctx *ctx)
+{
+	struct rvu_devlink *rvu_dl = devlink_priv(devlink);
+	struct rvu *rvu = rvu_dl->rvu;
+
+	rvu_npc_exact_disable_feature(rvu);
+
+	return 0;
+}
+
+static int rvu_af_npc_exact_feature_validate(struct devlink *devlink, u32 id,
+					     union devlink_param_value val,
+					     struct netlink_ext_ack *extack)
+{
+	struct rvu_devlink *rvu_dl = devlink_priv(devlink);
+	struct rvu *rvu = rvu_dl->rvu;
+	u64 enable;
+
+	if (kstrtoull(val.vstr, 10, &enable)) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Only 1 value is supported");
+		return -EINVAL;
+	}
+
+	if (enable != 1) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Only disabling exact match feature is supported");
+		return -EINVAL;
+	}
+
+	if (rvu_npc_exact_can_disable_feature(rvu))
+		return 0;
+
+	NL_SET_ERR_MSG_MOD(extack,
+			   "Can't disable exact match feature; Please try before any configuration");
+	return -EFAULT;
+}
 
 static const struct devlink_param rvu_af_dl_params[] = {
 	DEVLINK_PARAM_DRIVER(RVU_AF_DEVLINK_PARAM_ID_DWRR_MTU,
···
 			     BIT(DEVLINK_PARAM_CMODE_RUNTIME),
 			     rvu_af_dl_dwrr_mtu_get, rvu_af_dl_dwrr_mtu_set,
 			     rvu_af_dl_dwrr_mtu_validate),
+	DEVLINK_PARAM_DRIVER(RVU_AF_DEVLINK_PARAM_ID_NPC_EXACT_FEATURE_DISABLE,
+			     "npc_exact_feature_disable", DEVLINK_PARAM_TYPE_STRING,
+			     BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+			     rvu_af_npc_exact_feature_get,
+			     rvu_af_npc_exact_feature_disable,
+			     rvu_af_npc_exact_feature_validate),
 };
 
 /* Devlink switch mode */
···
 {
 	struct rvu_devlink *rvu_dl;
 	struct devlink *dl;
+	size_t size;
 	int err;
 
 	dl = devlink_alloc(&rvu_devlink_ops, sizeof(struct rvu_devlink),
···
 		goto err_dl_health;
 	}
 
-	err = devlink_params_register(dl, rvu_af_dl_params,
-				      ARRAY_SIZE(rvu_af_dl_params));
+	/* Register exact match devlink only for CN10K-B */
+	size = ARRAY_SIZE(rvu_af_dl_params);
+	if (!rvu_npc_exact_has_match_table(rvu))
+		size -= 1;
+
+	err = devlink_params_register(dl, rvu_af_dl_params, size);
 	if (err) {
 		dev_err(rvu->dev,
 			"devlink params register failed with error %d", err);

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

···
 #include "npc.h"
 #include "cgx.h"
 #include "lmac_common.h"
+#include "rvu_npc_hash.h"
 
 static void nix_free_tx_vtag_entries(struct rvu *rvu, u16 pcifunc);
 static int rvu_nix_get_bpid(struct rvu *rvu, struct nix_bp_cfg_req *req,
···
 		rvu_npc_install_promisc_entry(rvu, pcifunc, nixlf,
 					      pfvf->rx_chan_base,
 					      pfvf->rx_chan_cnt);
+
+		if (rvu_npc_exact_has_match_table(rvu))
+			rvu_npc_exact_promisc_enable(rvu, pcifunc);
 	} else {
 		if (!nix_rx_multicast)
 			rvu_npc_enable_promisc_entry(rvu, pcifunc, nixlf, false);
+
+		if (rvu_npc_exact_has_match_table(rvu))
+			rvu_npc_exact_promisc_disable(rvu, pcifunc);
 	}
 
 	return 0;

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

···
 #include "npc.h"
 #include "cgx.h"
 #include "npc_profile.h"
+#include "rvu_npc_hash.h"
 
 #define RSVD_MCAM_ENTRIES_PER_PF	3 /* Broadcast, Promisc and AllMulticast */
 #define RSVD_MCAM_ENTRIES_PER_NIXLF	1 /* Ucast for LFs */
···
 				     NIXLF_PROMISC_ENTRY, false);
 }
 
+bool rvu_npc_enable_mcam_by_entry_index(struct rvu *rvu, int entry, int intf, bool enable)
+{
+	int blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+	struct npc_mcam *mcam = &rvu->hw->mcam;
+	struct rvu_npc_mcam_rule *rule, *tmp;
+
+	mutex_lock(&mcam->lock);
+
+	list_for_each_entry_safe(rule, tmp, &mcam->mcam_rules, list) {
+		if (rule->intf != intf)
+			continue;
+
+		if (rule->entry != entry)
+			continue;
+
+		rule->enable = enable;
+		mutex_unlock(&mcam->lock);
+
+		npc_enable_mcam_entry(rvu, mcam, blkaddr,
+				      entry, enable);
+
+		return true;
+	}
+
+	mutex_unlock(&mcam->lock);
+	return false;
+}
+
 void rvu_npc_enable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf)
 {
 	/* Enables only broadcast match entry. Promisc/Allmulti are enabled
···
 	rvu_npc_disable_default_entries(rvu, pcifunc, nixlf);
 }
 
-#define SET_KEX_LD(intf, lid, ltype, ld, cfg)	\
-	rvu_write64(rvu, blkaddr,			\
-		NPC_AF_INTFX_LIDX_LTX_LDX_CFG(intf, lid, ltype, ld), cfg)
-
-#define SET_KEX_LDFLAGS(intf, ld, flags, cfg)	\
-	rvu_write64(rvu, blkaddr,			\
-		NPC_AF_INTFX_LDATAX_FLAGSX_CFG(intf, ld, flags), cfg)
-
 static void npc_program_mkex_rx(struct rvu *rvu, int blkaddr,
 				struct npc_mcam_kex *mkex, u8 intf)
 {
···
 		npc_program_mkex_rx(rvu, blkaddr, mkex, intf);
 		npc_program_mkex_tx(rvu, blkaddr, mkex, intf);
 	}
+
+	/* Programme mkex hash profile */
+	npc_program_mkex_hash(rvu, blkaddr);
 }
 
 static int npc_fwdb_prfl_img_map(struct rvu *rvu, void __iomem **prfl_img_addr,
···
 	profile->kpus = ARRAY_SIZE(npc_kpu_profiles);
 	profile->lt_def = &npc_lt_defaults;
 	profile->mkex = &npc_mkex_default;
+	profile->mkex_hash = &npc_mkex_hash_default;
 
 	return 0;
 }
···
 	mcam->hprio_count = mcam->lprio_count;
 	mcam->hprio_end = mcam->hprio_count;
 
-
 	/* Allocate bitmap for managing MCAM counters and memory
 	 * for saving counter to RVU PFFUNC allocation mapping.
 	 */
···
 
 	rvu_npc_setup_interfaces(rvu, blkaddr);
 
+	npc_config_secret_key(rvu, blkaddr);
 	/* Configure MKEX profile */
 	npc_load_mkex_profile(rvu, blkaddr, rvu->mkex_pfl_name);
 
···
 
 	mutex_unlock(&mcam->lock);
 	return 0;
+}
+
+/* Marks bitmaps to reserved the mcam slot */
+void npc_mcam_rsrcs_reserve(struct rvu *rvu, int blkaddr, int entry_idx)
+{
+	struct npc_mcam *mcam = &rvu->hw->mcam;
+
+	npc_mcam_set_bit(mcam, entry_idx);
 }
 
 int rvu_mbox_handler_npc_mcam_alloc_entry(struct rvu *rvu,

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

···
 #include "rvu_reg.h"
 #include "rvu.h"
 #include "npc.h"
+#include "rvu_npc_fs.h"
+#include "npc_profile.h"
+#include "rvu_npc_hash.h"
 
 #define NPC_BYTESM		GENMASK_ULL(19, 16)
 #define NPC_HDR_OFFSET		GENMASK_ULL(15, 8)
···
 	return true;
 }
 
+static void npc_scan_exact_result(struct npc_mcam *mcam, u8 bit_number,
+				  u8 key_nibble, u8 intf)
+{
+	u8 offset = (key_nibble * 4) % 64; /* offset within key word */
+	u8 kwi = (key_nibble * 4) / 64; /* which word in key */
+	u8 nr_bits = 4; /* bits in a nibble */
+	u8 type;
+
+	switch (bit_number) {
+	case 40 ... 43:
+		type = NPC_EXACT_RESULT;
+		break;
+
+	default:
+		return;
+	}
+	npc_set_kw_masks(mcam, type, nr_bits, kwi, offset, intf);
+}
+
 static void npc_scan_parse_result(struct npc_mcam *mcam, u8 bit_number,
 				  u8 key_nibble, u8 intf)
 {
···
 	default:
 		return;
 	}
+
 	npc_set_kw_masks(mcam, type, nr_bits, kwi, offset, intf);
 }
 
···
 {
 	struct npc_mcam *mcam = &rvu->hw->mcam;
 	u8 lid, lt, ld, bitnr;
+	u64 cfg, masked_cfg;
 	u8 key_nibble = 0;
-	u64 cfg;
 
 	/* Scan and note how parse result is going to be in key.
 	 * A bit set in PARSE_NIBBLE_ENA corresponds to a nibble from
···
 	 * will be concatenated in key.
 	 */
 	cfg = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf));
-	cfg &= NPC_PARSE_NIBBLE;
-	for_each_set_bit(bitnr, (unsigned long *)&cfg, 31) {
+	masked_cfg = cfg & NPC_PARSE_NIBBLE;
+	for_each_set_bit(bitnr, (unsigned long *)&masked_cfg, 31) {
 		npc_scan_parse_result(mcam, bitnr, key_nibble, intf);
+		key_nibble++;
+	}
+
+	/* Ignore exact match bits for mcam entries except the first rule
+	 * which is drop on hit. This first rule is configured explitcitly by
+	 * exact match code.
+	 */
+	masked_cfg = cfg & NPC_EXACT_NIBBLE;
+	bitnr = NPC_EXACT_NIBBLE_START;
+	for_each_set_bit_from(bitnr, (unsigned long *)&masked_cfg,
+			      NPC_EXACT_NIBBLE_START) {
+		npc_scan_exact_result(mcam, bitnr, key_nibble, intf);
 		key_nibble++;
 	}
 
···
  * If any bits in mask are 0 then corresponding bits in value are
  * dont care.
  */
-static void npc_update_entry(struct rvu *rvu, enum key_fields type,
-			     struct mcam_entry *entry, u64 val_lo,
-			     u64 val_hi, u64 mask_lo, u64 mask_hi, u8 intf)
+void npc_update_entry(struct rvu *rvu, enum key_fields type,
+		      struct mcam_entry *entry, u64 val_lo,
+		      u64 val_hi, u64 mask_lo, u64 mask_hi, u8 intf)
 {
 	struct npc_mcam *mcam = &rvu->hw->mcam;
 	struct mcam_entry dummy = { {0} };
···
 	}
 }
 
-#define IPV6_WORDS     4
-
 static void npc_update_ipv6_flow(struct rvu *rvu, struct mcam_entry *entry,
 				 u64 features, struct flow_msg *pkt,
 				 struct flow_msg *mask,
···
 static void npc_update_flow(struct rvu *rvu, struct mcam_entry *entry,
 			    u64 features, struct flow_msg *pkt,
 			    struct flow_msg *mask,
-			    struct rvu_npc_mcam_rule *output, u8 intf)
+			    struct rvu_npc_mcam_rule *output, u8 intf,
+			    int blkaddr)
 {
 	u64 dmac_mask = ether_addr_to_u64(mask->dmac);
 	u64 smac_mask = ether_addr_to_u64(mask->smac);
···
 } while (0)
 
 	NPC_WRITE_FLOW(NPC_DMAC, dmac, dmac_val, 0, dmac_mask, 0);
+
 	NPC_WRITE_FLOW(NPC_SMAC, smac, smac_val, 0, smac_mask, 0);
 	NPC_WRITE_FLOW(NPC_ETYPE, etype, ntohs(pkt->etype), 0,
 		       ntohs(mask->etype), 0);
···
 
 	npc_update_ipv6_flow(rvu, entry, features, pkt, mask, output, intf);
 	npc_update_vlan_features(rvu, entry, features, intf);
+
+	npc_update_field_hash(rvu, intf, entry, blkaddr, features,
+			      pkt, mask, opkt, omask);
 }
 
-static struct rvu_npc_mcam_rule *rvu_mcam_find_rule(struct npc_mcam *mcam,
-						    u16 entry)
+static struct rvu_npc_mcam_rule *rvu_mcam_find_rule(struct npc_mcam *mcam, u16 entry)
 {
 	struct rvu_npc_mcam_rule *iter;
 
···
 	u16 owner = req->hdr.pcifunc;
 	struct msg_rsp write_rsp;
 	struct mcam_entry *entry;
-	int entry_index, err;
 	bool new = false;
+	u16 entry_index;
+	int err;
 
 	installed_features = req->features;
 	features = req->features;
···
 	entry_index = req->entry;
 
 	npc_update_flow(rvu, entry, features, &req->packet, &req->mask, &dummy,
-			req->intf);
+			req->intf, blkaddr);
 
 	if (is_npc_intf_rx(req->intf))
 		npc_update_rx_entry(rvu, pfvf, entry, req, target, pf_set_vfs_mac);
···
 			npc_update_flow(rvu, entry, missing_features,
 					&def_ucast_rule->packet,
 					&def_ucast_rule->mask,
-					&dummy, req->intf);
+					&dummy, req->intf,
+					blkaddr);
 		installed_features = req->features | missing_features;
 	}
 
···
 					      index, false);
 	}
 	mutex_unlock(&mcam->lock);
+}
+
+/* single drop on non hit rule starting from 0th index. This an extension
+ * to RPM mac filter to support more rules.
+ */
+int npc_install_mcam_drop_rule(struct rvu *rvu, int mcam_idx, u16 *counter_idx,
+			       u64 chan_val, u64 chan_mask, u64 exact_val, u64 exact_mask,
+			       u64 bcast_mcast_val, u64 bcast_mcast_mask)
+{
+	struct npc_mcam_alloc_counter_req cntr_req = { 0 };
+	struct npc_mcam_alloc_counter_rsp cntr_rsp = { 0 };
+	struct npc_mcam_write_entry_req req = { 0 };
+	struct npc_mcam *mcam = &rvu->hw->mcam;
+	struct rvu_npc_mcam_rule *rule;
+	struct msg_rsp rsp;
+	bool enabled;
+	int blkaddr;
+	int err;
+
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+	if (blkaddr < 0) {
+		dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__);
+		return -ENODEV;
+	}
+
+	/* Bail out if no exact match support */
+	if (!rvu_npc_exact_has_match_table(rvu)) {
+		dev_info(rvu->dev, "%s: No support for exact match feature\n", __func__);
+		return -EINVAL;
+	}
+
+	/* If 0th entry is already used, return err */
+	enabled = is_mcam_entry_enabled(rvu, mcam, blkaddr, mcam_idx);
+	if (enabled) {
+		dev_err(rvu->dev, "%s: failed to add single drop on non hit rule at %d th index\n",
+			__func__, mcam_idx);
+		return	-EINVAL;
+	}
+
+	/* Add this entry to mcam rules list */
+	rule = kzalloc(sizeof(*rule), GFP_KERNEL);
+	if (!rule)
+		return -ENOMEM;
+
+	/* Disable rule by default. Enable rule when first dmac filter is
+	 * installed
+	 */
+	rule->enable = false;
+	rule->chan = chan_val;
+	rule->chan_mask = chan_mask;
+	rule->entry = mcam_idx;
+	rvu_mcam_add_rule(mcam, rule);
+
+	/* Reserve slot 0 */
+	npc_mcam_rsrcs_reserve(rvu, blkaddr, mcam_idx);
+
+	/* Allocate counter for this single drop on non hit rule */
+	cntr_req.hdr.pcifunc = 0; /* AF request */
+	cntr_req.contig = true;
+	cntr_req.count = 1;
+	err = rvu_mbox_handler_npc_mcam_alloc_counter(rvu, &cntr_req, &cntr_rsp);
+	if (err) {
+		dev_err(rvu->dev, "%s: Err to allocate cntr for drop rule (err=%d)\n",
+			__func__, err);
+		return	-EFAULT;
+	}
+	*counter_idx = cntr_rsp.cntr;
+
+	/* Fill in fields for this mcam entry */
+	npc_update_entry(rvu, NPC_EXACT_RESULT, &req.entry_data, exact_val, 0,
+			 exact_mask, 0, NIX_INTF_RX);
+	npc_update_entry(rvu, NPC_CHAN, &req.entry_data, chan_val, 0,
+			 chan_mask, 0, NIX_INTF_RX);
+	npc_update_entry(rvu, NPC_LXMB, &req.entry_data, bcast_mcast_val, 0,
+			 bcast_mcast_mask, 0, NIX_INTF_RX);
+
+	req.intf = NIX_INTF_RX;
+	req.set_cntr = true;
+	req.cntr = cntr_rsp.cntr;
+	req.entry = mcam_idx;
+
+	err = rvu_mbox_handler_npc_mcam_write_entry(rvu, &req, &rsp);
+	if (err) {
+		dev_err(rvu->dev, "%s: Installation of single drop on non hit rule at %d failed\n",
+			__func__, mcam_idx);
+		return err;
+	}
+
+	dev_err(rvu->dev, "%s: Installed single drop on non hit rule at %d, cntr=%d\n",
+		__func__, mcam_idx, req.cntr);
+
+	/* disable entry at Bank 0, index 0 */
+	npc_enable_mcam_entry(rvu, mcam, blkaddr, mcam_idx, false);
+
+	return 0;
 }

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

···
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU Admin Function driver
+ *
+ * Copyright (C) 2022 Marvell.
+ *
+ */
+
+#ifndef __RVU_NPC_FS_H
+#define __RVU_NPC_FS_H
+
+#define IPV6_WORDS	4
+
+void npc_update_entry(struct rvu *rvu, enum key_fields type,
+		      struct mcam_entry *entry, u64 val_lo,
+		      u64 val_hi, u64 mask_lo, u64 mask_hi, u8 intf);
+
+#endif /* RVU_NPC_FS_H */

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

···
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Admin Function driver
+ *
+ * Copyright (C) 2022 Marvell.
+ *
+ */
+
+#include <linux/bitfield.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/firmware.h>
+#include <linux/stddef.h>
+#include <linux/debugfs.h>
+#include <linux/bitfield.h>
+
+#include "rvu_struct.h"
+#include "rvu_reg.h"
+#include "rvu.h"
+#include "npc.h"
+#include "cgx.h"
+#include "rvu_npc_hash.h"
+#include "rvu_npc_fs.h"
+#include "rvu_npc_hash.h"
+
+static u64 rvu_npc_wide_extract(const u64 input[], size_t start_bit,
+				size_t width_bits)
+{
+	const u64 mask = ~(u64)((~(__uint128_t)0) << width_bits);
+	const size_t msb = start_bit + width_bits - 1;
+	const size_t lword = start_bit >> 6;
+	const size_t uword = msb >> 6;
+	size_t lbits;
+	u64 hi, lo;
+
+	if (lword == uword)
+		return (input[lword] >> (start_bit & 63)) & mask;
+
+	lbits = 64 - (start_bit & 63);
+	hi = input[uword];
+	lo = (input[lword] >> (start_bit & 63));
+	return ((hi << lbits) | lo) & mask;
+}
+
+static void rvu_npc_lshift_key(u64 *key, size_t key_bit_len)
+{
+	u64 prev_orig_word = 0;
+	u64 cur_orig_word = 0;
+	size_t extra = key_bit_len % 64;
+	size_t max_idx = key_bit_len / 64;
+	size_t i;
+
+	if (extra)
+		max_idx++;
+
+	for (i = 0; i < max_idx; i++) {
+		cur_orig_word = key[i];
+		key[i] = key[i] << 1;
+		key[i] |= ((prev_orig_word >> 63) & 0x1);
+		prev_orig_word = cur_orig_word;
+	}
+}
+
+static u32 rvu_npc_toeplitz_hash(const u64 *data, u64 *key, size_t data_bit_len,
+				 size_t key_bit_len)
+{
+	u32 hash_out = 0;
+	u64 temp_data = 0;
+	int i;
+
+	for (i = data_bit_len - 1; i >= 0; i--) {
+		temp_data = (data[i / 64]);
+		temp_data = temp_data >> (i % 64);
+		temp_data &= 0x1;
+		if (temp_data)
+			hash_out ^= (u32)(rvu_npc_wide_extract(key, key_bit_len - 32, 32));
+
+		rvu_npc_lshift_key(key, key_bit_len);
+	}
+
+	return hash_out;
+}
+
+u32 npc_field_hash_calc(u64 *ldata, struct npc_mcam_kex_hash *mkex_hash,
+			u64 *secret_key, u8 intf, u8 hash_idx)
+{
+	u64 hash_key[3];
+	u64 data_padded[2];
+	u32 field_hash;
+
+	hash_key[0] = secret_key[1] << 31;
+	hash_key[0] |= secret_key[2];
+	hash_key[1] = secret_key[1] >> 33;
+	hash_key[1] |= secret_key[0] << 31;
+	hash_key[2] = secret_key[0] >> 33;
+
+	data_padded[0] = mkex_hash->hash_mask[intf][hash_idx][0] & ldata[0];
+	data_padded[1] = mkex_hash->hash_mask[intf][hash_idx][1] & ldata[1];
+	field_hash = rvu_npc_toeplitz_hash(data_padded, hash_key, 128, 159);
+
+	field_hash &= mkex_hash->hash_ctrl[intf][hash_idx] >> 32;
+	field_hash |= mkex_hash->hash_ctrl[intf][hash_idx];
+	return field_hash;
+}
+
+static u64 npc_update_use_hash(int lt, int ld)
+{
+	u64 cfg = 0;
+
+	switch (lt) {
+	case NPC_LT_LC_IP6:
+		/* Update use_hash(bit-20) and bytesm1 (bit-16:19)
+		 * in KEX_LD_CFG
+		 */
+		cfg = KEX_LD_CFG_USE_HASH(0x1, 0x03,
+					  ld ? 0x8 : 0x18,
+					  0x1, 0x0, 0x10);
+		break;
+	}
+
+	return cfg;
+}
+
+static void npc_program_mkex_hash_rx(struct rvu *rvu, int blkaddr,
+				     u8 intf)
+{
+	struct npc_mcam_kex_hash *mkex_hash = rvu->kpu.mkex_hash;
+	int lid, lt, ld, hash_cnt = 0;
+
+	if (is_npc_intf_tx(intf))
+		return;
+
+	/* Program HASH_CFG */
+	for (lid = 0; lid < NPC_MAX_LID; lid++) {
+		for (lt = 0; lt < NPC_MAX_LT; lt++) {
+			for (ld = 0; ld < NPC_MAX_LD; ld++) {
+				if (mkex_hash->lid_lt_ld_hash_en[intf][lid][lt][ld]) {
+					u64 cfg = npc_update_use_hash(lt, ld);
+
+					hash_cnt++;
+					if (hash_cnt == NPC_MAX_HASH)
+						return;
+
+					/* Set updated KEX configuration */
+					SET_KEX_LD(intf, lid, lt, ld, cfg);
+					/* Set HASH configuration */
+					SET_KEX_LD_HASH(intf, ld,
+							mkex_hash->hash[intf][ld]);
+					SET_KEX_LD_HASH_MASK(intf, ld, 0,
+							     mkex_hash->hash_mask[intf][ld][0]);
+					SET_KEX_LD_HASH_MASK(intf, ld, 1,
+							     mkex_hash->hash_mask[intf][ld][1]);
+					SET_KEX_LD_HASH_CTRL(intf, ld,
+							     mkex_hash->hash_ctrl[intf][ld]);
+				}
+			}
+		}
+	}
+}
+
+static void npc_program_mkex_hash_tx(struct rvu *rvu, int blkaddr,
+				     u8 intf)
+{
+	struct npc_mcam_kex_hash *mkex_hash = rvu->kpu.mkex_hash;
+	int lid, lt, ld, hash_cnt = 0;
+
+	if (is_npc_intf_rx(intf))
+		return;
+
+	/* Program HASH_CFG */
+	for (lid = 0; lid < NPC_MAX_LID; lid++) {
+		for (lt = 0; lt < NPC_MAX_LT; lt++) {
+			for (ld = 0; ld < NPC_MAX_LD; ld++)
+				if (mkex_hash->lid_lt_ld_hash_en[intf][lid][lt][ld]) {
+					u64 cfg = npc_update_use_hash(lt, ld);
+
+					hash_cnt++;
+					if (hash_cnt == NPC_MAX_HASH)
+						return;
+
+					/* Set updated KEX configuration */
+					SET_KEX_LD(intf, lid, lt, ld, cfg);
+					/* Set HASH configuration */
+					SET_KEX_LD_HASH(intf, ld,
+							mkex_hash->hash[intf][ld]);
+					SET_KEX_LD_HASH_MASK(intf, ld, 0,
+							     mkex_hash->hash_mask[intf][ld][0]);
+					SET_KEX_LD_HASH_MASK(intf, ld, 1,
+							     mkex_hash->hash_mask[intf][ld][1]);
+					SET_KEX_LD_HASH_CTRL(intf, ld,
+							     mkex_hash->hash_ctrl[intf][ld]);
+					hash_cnt++;
+					if (hash_cnt == NPC_MAX_HASH)
+						return;
+				}
+		}
+	}
+}
+
+void npc_config_secret_key(struct rvu *rvu, int blkaddr)
+{
+	struct hw_cap *hwcap = &rvu->hw->cap;
+	struct rvu_hwinfo *hw = rvu->hw;
+	u8 intf;
+
+	if (!hwcap->npc_hash_extract) {
+		dev_info(rvu->dev, "HW does not support secret key configuration\n");
+		return;
+	}
+
+	for (intf = 0; intf < hw->npc_intfs; intf++) {
+		rvu_write64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY0(intf),
+			    RVU_NPC_HASH_SECRET_KEY0);
+		rvu_write64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY1(intf),
+			    RVU_NPC_HASH_SECRET_KEY1);
+		rvu_write64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY2(intf),
+			    RVU_NPC_HASH_SECRET_KEY2);
+	}
+}
+
+void npc_program_mkex_hash(struct rvu *rvu, int blkaddr)
+{
+	struct hw_cap *hwcap = &rvu->hw->cap;
+	struct rvu_hwinfo *hw = rvu->hw;
+	u8 intf;
+
+	if (!hwcap->npc_hash_extract) {
+		dev_dbg(rvu->dev, "Field hash extract feature is not supported\n");
+		return;
+	}
+
+	for (intf = 0; intf < hw->npc_intfs; intf++) {
+		npc_program_mkex_hash_rx(rvu, blkaddr, intf);
+		npc_program_mkex_hash_tx(rvu, blkaddr, intf);
+	}
+}
+
+void npc_update_field_hash(struct rvu *rvu, u8 intf,
+			   struct mcam_entry *entry,
+			   int blkaddr,
+			   u64 features,
+			   struct flow_msg *pkt,
+			   struct flow_msg *mask,
+			   struct flow_msg *opkt,
+			   struct flow_msg *omask)
+{
+	struct npc_mcam_kex_hash *mkex_hash = rvu->kpu.mkex_hash;
+	struct npc_get_secret_key_req req;
+	struct npc_get_secret_key_rsp rsp;
+	u64 ldata[2], cfg;
+	u32 field_hash;
+	u8 hash_idx;
+
+	if (!rvu->hw->cap.npc_hash_extract) {
+		dev_dbg(rvu->dev, "%s: Field hash extract feature is not supported\n", __func__);
+		return;
+	}
+
+	req.intf = intf;
+	rvu_mbox_handler_npc_get_secret_key(rvu, &req, &rsp);
+
+	for (hash_idx = 0; hash_idx < NPC_MAX_HASH; hash_idx++) {
+		cfg = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_HASHX_CFG(intf, hash_idx));
+		if ((cfg & BIT_ULL(11)) && (cfg & BIT_ULL(12))) {
+			u8 lid = (cfg & GENMASK_ULL(10, 8)) >> 8;
+			u8 ltype = (cfg & GENMASK_ULL(7, 4)) >> 4;
+			u8 ltype_mask = cfg & GENMASK_ULL(3, 0);
+
+			if (mkex_hash->lid_lt_ld_hash_en[intf][lid][ltype][hash_idx]) {
+				switch (ltype & ltype_mask) {
+				/* If hash extract enabled is supported for IPv6 then
+				 * 128 bit IPv6 source and destination addressed
+				 * is hashed to 32 bit value.
+				 */
+				case NPC_LT_LC_IP6:
+					if (features & BIT_ULL(NPC_SIP_IPV6)) {
+						u32 src_ip[IPV6_WORDS];
+
+						be32_to_cpu_array(src_ip, pkt->ip6src, IPV6_WORDS);
+						ldata[0] = (u64)src_ip[0] << 32 | src_ip[1];
+						ldata[1] = (u64)src_ip[2] << 32 | src_ip[3];
+						field_hash = npc_field_hash_calc(ldata,
+										 mkex_hash,
+										 rsp.secret_key,
+										 intf,
+										 hash_idx);
+						npc_update_entry(rvu, NPC_SIP_IPV6, entry,
+								 field_hash, 0, 32, 0, intf);
+						memcpy(&opkt->ip6src, &pkt->ip6src,
+						       sizeof(pkt->ip6src));
+						memcpy(&omask->ip6src, &mask->ip6src,
+						       sizeof(mask->ip6src));
+						break;
+					}
+
+					if (features & BIT_ULL(NPC_DIP_IPV6)) {
+						u32 dst_ip[IPV6_WORDS];
+
+						be32_to_cpu_array(dst_ip, pkt->ip6dst, IPV6_WORDS);
+						ldata[0] = (u64)dst_ip[0] << 32 | dst_ip[1];
+						ldata[1] = (u64)dst_ip[2] << 32 | dst_ip[3];
+						field_hash = npc_field_hash_calc(ldata,
+										 mkex_hash,
+										 rsp.secret_key,
+										 intf,
+										 hash_idx);
+						npc_update_entry(rvu, NPC_DIP_IPV6, entry,
+								 field_hash, 0, 32, 0, intf);
+						memcpy(&opkt->ip6dst, &pkt->ip6dst,
+						       sizeof(pkt->ip6dst));
+						memcpy(&omask->ip6dst, &mask->ip6dst,
+						       sizeof(mask->ip6dst));
+					}
+					break;
+				}
+			}
+		}
+	}
+}
+
+int rvu_mbox_handler_npc_get_secret_key(struct rvu *rvu,
+					struct npc_get_secret_key_req *req,
+					struct npc_get_secret_key_rsp *rsp)
+{
+	u64 *secret_key = rsp->secret_key;
+	u8 intf = req->intf;
+	int blkaddr;
+
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+	if (blkaddr < 0) {
+		dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__);
+		return -EINVAL;
+	}
+
+	secret_key[0] = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY0(intf));
+	secret_key[1] = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY1(intf));
+	secret_key[2] = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY2(intf));
+
+	return 0;
+}
+
+/**
+ *	rvu_npc_exact_mac2u64 - utility function to convert mac address to u64.
+ *	@macaddr: MAC address.
+ *	Returns mdata for exact match table.
+ */
+static u64 rvu_npc_exact_mac2u64(u8 *mac_addr)
+{
+	u64 mac = 0;
+	int index;
+
+	for (index = ETH_ALEN - 1; index >= 0; index--)
+		mac |= ((u64)*mac_addr++) << (8 * index);
+
+	return mac;
+}
+
+/**
+ *	rvu_exact_prepare_mdata - Make mdata for mcam entry
+ *	@mac: MAC address
+ *	@chan: Channel number.
+ *	@ctype: Channel Type.
+ *	@mask: LDATA mask.
+ */
+static u64 rvu_exact_prepare_mdata(u8 *mac, u16 chan, u16 ctype, u64 mask)
+{
+	u64 ldata = rvu_npc_exact_mac2u64(mac);
+
+	/* Please note that mask is 48bit which excludes chan and ctype.
+	 * Increase mask bits if we need to include them as well.
+	 */
+	ldata |= ((u64)chan << 48);
+	ldata |= ((u64)ctype  << 60);
+	ldata &= mask;
+	ldata = ldata << 2;
+
+	return ldata;
+}
+
+/**
+ *      rvu_exact_calculate_hash - calculate hash index to mem table.
+ *	@rvu: resource virtualization unit.
+ *	@chan: Channel number
+ *	@ctype: Channel type.
+ *	@mac: MAC address
+ *	@mask: HASH mask.
+ *	@table_depth: Depth of table.
+ */
+u32 rvu_exact_calculate_hash(struct rvu *rvu, u16 chan, u16 ctype, u8 *mac,
+			     u64 mask, u32 table_depth)
+{
+	struct npc_exact_table *table = rvu->hw->table;
+	u64 hash_key[2];
+	u64 key_in[2];
+	u64 ldata;
+	u32 hash;
+
+	key_in[0] = RVU_NPC_HASH_SECRET_KEY0;
+	key_in[1] = RVU_NPC_HASH_SECRET_KEY2;
+
+	hash_key[0] = key_in[0] << 31;
+	hash_key[0] |= key_in[1];
+	hash_key[1] = key_in[0] >> 33;
+
+	ldata = rvu_exact_prepare_mdata(mac, chan, ctype, mask);
+
+	dev_dbg(rvu->dev, "%s: ldata=0x%llx hash_key0=0x%llx hash_key2=0x%llx\n", __func__,
+		ldata, hash_key[1], hash_key[0]);
+	hash = rvu_npc_toeplitz_hash(&ldata, (u64 *)hash_key, 64, 95);
+
+	hash &= table->mem_table.hash_mask;
+	hash += table->mem_table.hash_offset;
+	dev_dbg(rvu->dev, "%s: hash=%x\n", __func__,  hash);
+
+	return hash;
+}
+
+/**
+ *      rvu_npc_exact_alloc_mem_table_entry - find free entry in 4 way table.
+ *      @rvu: resource virtualization unit.
+ *	@way: Indicate way to table.
+ *	@index: Hash index to 4 way table.
+ *
+ *	Searches 4 way table using hash index. Returns 0 on success.
+ */
+static int rvu_npc_exact_alloc_mem_table_entry(struct rvu *rvu, u8 *way,
+					       u32 *index, unsigned int hash)
+{
+	struct npc_exact_table *table;
+	int depth, i;
+
+	table = rvu->hw->table;
+	depth = table->mem_table.depth;
+
+	/* Check all the 4 ways for a free slot. */
+	mutex_lock(&table->lock);
+	for (i = 0; i <  table->mem_table.ways; i++) {
+		if (test_bit(hash + i * depth, table->mem_table.bmap))
+			continue;
+
+		set_bit(hash + i * depth, table->mem_table.bmap);
+		mutex_unlock(&table->lock);
+
+		dev_dbg(rvu->dev, "%s: mem table entry alloc success (way=%d index=%d)\n",
+			__func__, i, hash);
+
+		*way = i;
+		*index = hash;
+		return 0;
+	}
+	mutex_unlock(&table->lock);
+
+	dev_dbg(rvu->dev, "%s: No space in 4 way exact way, weight=%u\n", __func__,
+		bitmap_weight(table->mem_table.bmap, table->mem_table.depth));
+	return -ENOSPC;
+}
+
+/**
+ *	rvu_npc_exact_free_id - Free seq id from bitmat.
+ *	@rvu: Resource virtualization unit.
+ *	@seq_id: Sequence identifier to be freed.
+ */
+static void rvu_npc_exact_free_id(struct rvu *rvu, u32 seq_id)
+{
+	struct npc_exact_table *table;
+
+	table = rvu->hw->table;
+	mutex_lock(&table->lock);
+	clear_bit(seq_id, table->id_bmap);
+	mutex_unlock(&table->lock);
+	dev_dbg(rvu->dev, "%s: freed id %d\n", __func__, seq_id);
+}
+
+/**
+ *	rvu_npc_exact_alloc_id - Alloc seq id from bitmap.
+ *	@rvu: Resource virtualization unit.
+ *	@seq_id: Sequence identifier.
+ */
+static bool rvu_npc_exact_alloc_id(struct rvu *rvu, u32 *seq_id)
+{
+	struct npc_exact_table *table;
+	u32 idx;
+
+	table = rvu->hw->table;
+
+	mutex_lock(&table->lock);
+	idx = find_first_zero_bit(table->id_bmap, table->tot_ids);
+	if (idx == table->tot_ids) {
+		mutex_unlock(&table->lock);
+		dev_err(rvu->dev, "%s: No space in id bitmap (%d)\n",
+			__func__, bitmap_weight(table->id_bmap, table->tot_ids));
+
+		return false;
+	}
+
+	/* Mark bit map to indicate that slot is used.*/
+	set_bit(idx, table->id_bmap);
+	mutex_unlock(&table->lock);
+
+	*seq_id = idx;
+	dev_dbg(rvu->dev, "%s: Allocated id (%d)\n", __func__, *seq_id);
+
+	return true;
+}
+
+/**
+ *      rvu_npc_exact_alloc_cam_table_entry - find free slot in fully associative table.
+ *      @rvu: resource virtualization unit.
+ *	@index: Index to exact CAM table.
+ */
+static int rvu_npc_exact_alloc_cam_table_entry(struct rvu *rvu, int *index)
+{
+	struct npc_exact_table *table;
+	u32 idx;
+
+	table = rvu->hw->table;
+
+	mutex_lock(&table->lock);
+	idx = find_first_zero_bit(table->cam_table.bmap, table->cam_table.depth);
+	if (idx == table->cam_table.depth) {
+		mutex_unlock(&table->lock);
+		dev_info(rvu->dev, "%s: No space in exact cam table, weight=%u\n", __func__,
+			 bitmap_weight(table->cam_table.bmap, table->cam_table.depth));
+		return -ENOSPC;
+	}
+
+	/* Mark bit map to indicate that slot is used.*/
+	set_bit(idx, table->cam_table.bmap);
+	mutex_unlock(&table->lock);
+
+	*index = idx;
+	dev_dbg(rvu->dev, "%s: cam table entry alloc success (index=%d)\n",
+		__func__, idx);
+	return 0;
+}
+
+/**
+ *	rvu_exact_prepare_table_entry - Data for exact match table entry.
+ *	@rvu: Resource virtualization unit.
+ *	@enable: Enable/Disable entry
+ *	@ctype: Software defined channel type. Currently set as 0.
+ *	@chan: Channel number.
+ *	@mac_addr: Destination mac address.
+ *	returns mdata for exact match table.
+ */
+static u64 rvu_exact_prepare_table_entry(struct rvu *rvu, bool enable,
+					 u8 ctype, u16 chan, u8 *mac_addr)
+
+{
+	u64 ldata = rvu_npc_exact_mac2u64(mac_addr);
+
+	/* Enable or disable */
+	u64 mdata = FIELD_PREP(GENMASK_ULL(63, 63), !!enable);
+
+	/* Set Ctype */
+	mdata |= FIELD_PREP(GENMASK_ULL(61, 60), ctype);
+
+	/* Set chan */
+	mdata |= FIELD_PREP(GENMASK_ULL(59, 48), chan);
+
+	/* MAC address */
+	mdata |= FIELD_PREP(GENMASK_ULL(47, 0), ldata);
+
+	return mdata;
+}
+
+/**
+ *	rvu_exact_config_secret_key - Configure secret key.
+ *	Returns mdata for exact match table.
+ */
+static void rvu_exact_config_secret_key(struct rvu *rvu)
+{
+	int blkaddr;
+
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+	rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_SECRET0(NIX_INTF_RX),
+		    RVU_NPC_HASH_SECRET_KEY0);
+
+	rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_SECRET1(NIX_INTF_RX),
+		    RVU_NPC_HASH_SECRET_KEY1);
+
+	rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_SECRET2(NIX_INTF_RX),
+		    RVU_NPC_HASH_SECRET_KEY2);
+}
+
+/**
+ *	rvu_exact_config_search_key - Configure search key
+ *	Returns mdata for exact match table.
+ */
+static void rvu_exact_config_search_key(struct rvu *rvu)
+{
+	int blkaddr;
+	u64 reg_val;
+
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+
+	/* HDR offset */
+	reg_val = FIELD_PREP(GENMASK_ULL(39, 32), 0);
+
+	/* BYTESM1, number of bytes - 1 */
+	reg_val |= FIELD_PREP(GENMASK_ULL(18, 16), ETH_ALEN - 1);
+
+	/* Enable LID and set LID to  NPC_LID_LA */
+	reg_val |= FIELD_PREP(GENMASK_ULL(11, 11), 1);
+	reg_val |= FIELD_PREP(GENMASK_ULL(10, 8),  NPC_LID_LA);
+
+	/* Clear layer type based extraction */
+
+	/* Disable LT_EN */
+	reg_val |= FIELD_PREP(GENMASK_ULL(12, 12), 0);
+
+	/* Set LTYPE_MATCH to 0 */
+	reg_val |= FIELD_PREP(GENMASK_ULL(7, 4), 0);
+
+	/* Set LTYPE_MASK to 0 */
+	reg_val |= FIELD_PREP(GENMASK_ULL(3, 0), 0);
+
+	rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_CFG(NIX_INTF_RX), reg_val);
+}
+
+/**
+ *	rvu_exact_config_result_ctrl - Set exact table hash control
+ *	@rvu: Resource virtualization unit.
+ *	@depth: Depth of Exact match table.
+ *
+ *	Sets mask and offset for hash for mem table.
+ */
+static void rvu_exact_config_result_ctrl(struct rvu *rvu, uint32_t depth)
+{
+	int blkaddr;
+	u64 reg = 0;
+
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+
+	/* Set mask. Note that depth is a power of 2 */
+	rvu->hw->table->mem_table.hash_mask = (depth - 1);
+	reg |= FIELD_PREP(GENMASK_ULL(42, 32), (depth - 1));
+
+	/* Set offset as 0 */
+	rvu->hw->table->mem_table.hash_offset = 0;
+	reg |= FIELD_PREP(GENMASK_ULL(10, 0), 0);
+
+	/* Set reg for RX */
+	rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_RESULT_CTL(NIX_INTF_RX), reg);
+	/* Store hash mask and offset for s/w algorithm */
+}
+
+/**
+ *	rvu_exact_config_table_mask - Set exact table mask.
+ *	@rvu: Resource virtualization unit.
+ */
+static void rvu_exact_config_table_mask(struct rvu *rvu)
+{
+	int blkaddr;
+	u64 mask = 0;
+
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+
+	/* Don't use Ctype */
+	mask |= FIELD_PREP(GENMASK_ULL(61, 60), 0);
+
+	/* Set chan */
+	mask |= GENMASK_ULL(59, 48);
+
+	/* Full ldata */
+	mask |= GENMASK_ULL(47, 0);
+
+	/* Store mask for s/w hash calcualtion */
+	rvu->hw->table->mem_table.mask = mask;
+
+	/* Set mask for RX.*/
+	rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_MASK(NIX_INTF_RX), mask);
+}
+
+/**
+ *      rvu_npc_exact_get_max_entries - Get total number of entries in table.
+ *      @rvu: resource virtualization unit.
+ */
+u32 rvu_npc_exact_get_max_entries(struct rvu *rvu)
+{
+	struct npc_exact_table *table;
+
+	table = rvu->hw->table;
+	return table->tot_ids;
+}
+
+/**
+ *      rvu_npc_exact_has_match_table - Checks support for exact match.
+ *      @rvu: resource virtualization unit.
+ *
+ */
+bool rvu_npc_exact_has_match_table(struct rvu *rvu)
+{
+	return  rvu->hw->cap.npc_exact_match_enabled;
+}
+
+/**
+ *      __rvu_npc_exact_find_entry_by_seq_id - find entry by id
+ *      @rvu: resource virtualization unit.
+ *	@seq_id: Sequence identifier.
+ *
+ *	Caller should acquire the lock.
+ */
+static struct npc_exact_table_entry *
+__rvu_npc_exact_find_entry_by_seq_id(struct rvu *rvu, u32 seq_id)
+{
+	struct npc_exact_table *table = rvu->hw->table;
+	struct npc_exact_table_entry *entry = NULL;
+	struct list_head *lhead;
+
+	lhead = &table->lhead_gbl;
+
+	/* traverse to find the matching entry */
+	list_for_each_entry(entry, lhead, glist) {
+		if (entry->seq_id != seq_id)
+			continue;
+
+		return entry;
+	}
+
+	return NULL;
+}
+
+/**
+ *      rvu_npc_exact_add_to_list - Add entry to list
+ *      @rvu: resource virtualization unit.
+ *	@opc_type: OPCODE to select MEM/CAM table.
+ *	@ways: MEM table ways.
+ *	@index: Index in MEM/CAM table.
+ *	@cgx_id: CGX identifier.
+ *	@lamc_id: LMAC identifier.
+ *	@mac_addr: MAC address.
+ *	@chan: Channel number.
+ *	@ctype: Channel Type.
+ *	@seq_id: Sequence identifier
+ *	@cmd: True if function is called by ethtool cmd
+ *	@mcam_idx: NPC mcam index of DMAC entry in NPC mcam.
+ *	@pcifunc: pci function
+ */
+static int rvu_npc_exact_add_to_list(struct rvu *rvu, enum npc_exact_opc_type opc_type, u8 ways,
+				     u32 index, u8 cgx_id, u8 lmac_id, u8 *mac_addr, u16 chan,
+				     u8 ctype, u32 *seq_id, bool cmd, u32 mcam_idx, u16 pcifunc)
+{
+	struct npc_exact_table_entry *entry, *tmp, *iter;
+	struct npc_exact_table *table = rvu->hw->table;
+	struct list_head *lhead, *pprev;
+
+	WARN_ON(ways >= NPC_EXACT_TBL_MAX_WAYS);
+
+	if (!rvu_npc_exact_alloc_id(rvu, seq_id)) {
+		dev_err(rvu->dev, "%s: Generate seq id failed\n", __func__);
+		return -EFAULT;
+	}
+
+	entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+	if (!entry) {
+		rvu_npc_exact_free_id(rvu, *seq_id);
+		dev_err(rvu->dev, "%s: Memory allocation failed\n", __func__);
+		return -ENOMEM;
+	}
+
+	mutex_lock(&table->lock);
+	switch (opc_type) {
+	case NPC_EXACT_OPC_CAM:
+		lhead = &table->lhead_cam_tbl_entry;
+		table->cam_tbl_entry_cnt++;
+		break;
+
+	case NPC_EXACT_OPC_MEM:
+		lhead = &table->lhead_mem_tbl_entry[ways];
+		table->mem_tbl_entry_cnt++;
+		break;
+
+	default:
+		mutex_unlock(&table->lock);
+		kfree(entry);
+		rvu_npc_exact_free_id(rvu, *seq_id);
+
+		dev_err(rvu->dev, "%s: Unknown opc type%d\n", __func__, opc_type);
+		return  -EINVAL;
+	}
+
+	/* Add to global list */
+	INIT_LIST_HEAD(&entry->glist);
+	list_add_tail(&entry->glist, &table->lhead_gbl);
+	INIT_LIST_HEAD(&entry->list);
+	entry->index = index;
+	entry->ways = ways;
+	entry->opc_type = opc_type;
+
+	entry->pcifunc = pcifunc;
+
+	ether_addr_copy(entry->mac, mac_addr);
+	entry->chan = chan;
+	entry->ctype = ctype;
+	entry->cgx_id = cgx_id;
+	entry->lmac_id = lmac_id;
+
+	entry->seq_id = *seq_id;
+
+	entry->mcam_idx = mcam_idx;
+	entry->cmd = cmd;
+
+	pprev = lhead;
+
+	/* Insert entry in ascending order of index */
+	list_for_each_entry_safe(iter, tmp, lhead, list) {
+		if (index < iter->index)
+			break;
+
+		pprev = &iter->list;
+	}
+
+	/* Add to each table list */
+	list_add(&entry->list, pprev);
+	mutex_unlock(&table->lock);
+	return 0;
+}
+
+/**
+ *	rvu_npc_exact_mem_table_write - Wrapper for register write
+ *	@rvu: resource virtualization unit.
+ *	@blkaddr: Block address
+ *	@ways: ways for MEM table.
+ *	@index: Index in MEM
+ *	@mdata: Meta data to be written to register.
+ */
+static void rvu_npc_exact_mem_table_write(struct rvu *rvu, int blkaddr, u8 ways,
+					  u32 index, u64 mdata)
+{
+	rvu_write64(rvu, blkaddr, NPC_AF_EXACT_MEM_ENTRY(ways, index), mdata);
+}
+
+/**
+ *	rvu_npc_exact_cam_table_write - Wrapper for register write
+ *	@rvu: resource virtualization unit.
+ *	@blkaddr: Block address
+ *	@index: Index in MEM
+ *	@mdata: Meta data to be written to register.
+ */
+static void rvu_npc_exact_cam_table_write(struct rvu *rvu, int blkaddr,
+					  u32 index, u64 mdata)
+{
+	rvu_write64(rvu, blkaddr, NPC_AF_EXACT_CAM_ENTRY(index), mdata);
+}
+
+/**
+ *      rvu_npc_exact_dealloc_table_entry - dealloc table entry
+ *      @rvu: resource virtualization unit.
+ *	@opc_type: OPCODE for selection of table(MEM or CAM)
+ *	@ways: ways if opc_type is MEM table.
+ *	@index: Index of MEM or CAM table.
+ */
+static int rvu_npc_exact_dealloc_table_entry(struct rvu *rvu, enum npc_exact_opc_type opc_type,
+					     u8 ways, u32 index)
+{
+	int blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+	struct npc_exact_table *table;
+	u8 null_dmac[6] = { 0 };
+	int depth;
+
+	/* Prepare entry with all fields set to zero */
+	u64 null_mdata = rvu_exact_prepare_table_entry(rvu, false, 0, 0, null_dmac);
+
+	table = rvu->hw->table;
+	depth = table->mem_table.depth;
+
+	mutex_lock(&table->lock);
+
+	switch (opc_type) {
+	case NPC_EXACT_OPC_CAM:
+
+		/* Check whether entry is used already */
+		if (!test_bit(index, table->cam_table.bmap)) {
+			mutex_unlock(&table->lock);
+			dev_err(rvu->dev, "%s: Trying to free an unused entry ways=%d index=%d\n",
+				__func__, ways, index);
+			return -EINVAL;
+		}
+
+		rvu_npc_exact_cam_table_write(rvu, blkaddr, index, null_mdata);
+		clear_bit(index, table->cam_table.bmap);
+		break;
+
+	case NPC_EXACT_OPC_MEM:
+
+		/* Check whether entry is used already */
+		if (!test_bit(index + ways * depth, table->mem_table.bmap)) {
+			mutex_unlock(&table->lock);
+			dev_err(rvu->dev, "%s: Trying to free an unused entry index=%d\n",
+				__func__, index);
+			return -EINVAL;
+		}
+
+		rvu_npc_exact_mem_table_write(rvu, blkaddr, ways, index, null_mdata);
+		clear_bit(index + ways * depth, table->mem_table.bmap);
+		break;
+
+	default:
+		mutex_unlock(&table->lock);
+		dev_err(rvu->dev, "%s: invalid opc type %d", __func__, opc_type);
+		return -ENOSPC;
+	}
+
+	mutex_unlock(&table->lock);
+
+	dev_dbg(rvu->dev, "%s: Successfully deleted entry (index=%d, ways=%d opc_type=%d\n",
+		__func__, index,  ways, opc_type);
+
+	return 0;
+}
+
+/**
+ *	rvu_npc_exact_alloc_table_entry - Allociate an entry
+ *      @rvu: resource virtualization unit.
+ *	@mac: MAC address.
+ *	@chan: Channel number.
+ *	@ctype: Channel Type.
+ *	@index: Index of MEM table or CAM table.
+ *	@ways: Ways. Only valid for MEM table.
+ *	@opc_type: OPCODE to select table (MEM or CAM)
+ *
+ *	Try allocating a slot from MEM table. If all 4 ways
+ *	slot are full for a hash index, check availability in
+ *	32-entry CAM table for allocation.
+ */
+static int rvu_npc_exact_alloc_table_entry(struct rvu *rvu,  char *mac, u16 chan, u8 ctype,
+					   u32 *index, u8 *ways, enum npc_exact_opc_type *opc_type)
+{
+	struct npc_exact_table *table;
+	unsigned int hash;
+	int err;
+
+	table = rvu->hw->table;
+
+	/* Check in 4-ways mem entry for free slote */
+	hash =  rvu_exact_calculate_hash(rvu, chan, ctype, mac, table->mem_table.mask,
+					 table->mem_table.depth);
+	err = rvu_npc_exact_alloc_mem_table_entry(rvu, ways, index, hash);
+	if (!err) {
+		*opc_type = NPC_EXACT_OPC_MEM;
+		dev_dbg(rvu->dev, "%s: inserted in 4 ways hash table ways=%d, index=%d\n",
+			__func__, *ways, *index);
+		return 0;
+	}
+
+	dev_dbg(rvu->dev, "%s: failed to insert in 4 ways hash table\n", __func__);
+
+	/* wayss is 0 for cam table */
+	*ways = 0;
+	err = rvu_npc_exact_alloc_cam_table_entry(rvu, index);
+	if (!err) {
+		*opc_type = NPC_EXACT_OPC_CAM;
+		dev_dbg(rvu->dev, "%s: inserted in fully associative hash table index=%u\n",
+			__func__, *index);
+		return 0;
+	}
+
+	dev_err(rvu->dev, "%s: failed to insert in fully associative hash table\n", __func__);
+	return -ENOSPC;
+}
+
+/**
+ *	rvu_npc_exact_save_drop_rule_chan_and_mask - Save drop rules info in data base.
+ *      @rvu: resource virtualization unit.
+ *	@drop_mcam_idx: Drop rule index in NPC mcam.
+ *	@chan_val: Channel value.
+ *	@chan_mask: Channel Mask.
+ *	@pcifunc: pcifunc of interface.
+ */
+static bool rvu_npc_exact_save_drop_rule_chan_and_mask(struct rvu *rvu, int drop_mcam_idx,
+						       u64 chan_val, u64 chan_mask, u16 pcifunc)
+{
+	struct npc_exact_table *table;
+	int i;
+
+	table = rvu->hw->table;
+
+	for (i = 0; i < NPC_MCAM_DROP_RULE_MAX; i++) {
+		if (!table->drop_rule_map[i].valid)
+			break;
+
+		if (table->drop_rule_map[i].chan_val != (u16)chan_val)
+			continue;
+
+		if (table->drop_rule_map[i].chan_mask != (u16)chan_mask)
+			continue;
+
+		return false;
+	}
+
+	if (i == NPC_MCAM_DROP_RULE_MAX)
+		return false;
+
+	table->drop_rule_map[i].drop_rule_idx = drop_mcam_idx;
+	table->drop_rule_map[i].chan_val = (u16)chan_val;
+	table->drop_rule_map[i].chan_mask = (u16)chan_mask;
+	table->drop_rule_map[i].pcifunc = pcifunc;
+	table->drop_rule_map[i].valid = true;
+	return true;
+}
+
+/**
+ *	rvu_npc_exact_calc_drop_rule_chan_and_mask - Calculate Channel number and mask.
+ *      @rvu: resource virtualization unit.
+ *	@intf_type: Interface type (SDK, LBK or CGX)
+ *	@cgx_id: CGX identifier.
+ *	@lmac_id: LAMC identifier.
+ *	@val: Channel number.
+ *	@mask: Channel mask.
+ */
+static bool rvu_npc_exact_calc_drop_rule_chan_and_mask(struct rvu *rvu, u8 intf_type,
+						       u8 cgx_id, u8 lmac_id,
+						       u64 *val, u64 *mask)
+{
+	u16 chan_val, chan_mask;
+
+	/* No support for SDP and LBK */
+	if (intf_type != NIX_INTF_TYPE_CGX)
+		return false;
+
+	chan_val = rvu_nix_chan_cgx(rvu, cgx_id, lmac_id, 0);
+	chan_mask = 0xfff;
+
+	if (val)
+		*val = chan_val;
+
+	if (mask)
+		*mask = chan_mask;
+
+	return true;
+}
+
+/**
+ *	rvu_npc_exact_drop_rule_to_pcifunc - Retrieve pcifunc
+ *      @rvu: resource virtualization unit.
+ *	@drop_rule_idx: Drop rule index in NPC mcam.
+ *
+ *	Debugfs (exact_drop_cnt) entry displays pcifunc for interface
+ *	by retrieving the pcifunc value from data base.
+ */
+u16 rvu_npc_exact_drop_rule_to_pcifunc(struct rvu *rvu, u32 drop_rule_idx)
+{
+	struct npc_exact_table *table;
+	int i;
+
+	table = rvu->hw->table;
+
+	for (i = 0; i < NPC_MCAM_DROP_RULE_MAX; i++) {
+		if (!table->drop_rule_map[i].valid)
+			break;
+
+		if (table->drop_rule_map[i].drop_rule_idx != drop_rule_idx)
+			continue;
+
+		return table->drop_rule_map[i].pcifunc;
+	}
+
+	dev_err(rvu->dev, "%s: drop mcam rule index (%d) >= NPC_MCAM_DROP_RULE_MAX\n",
+		__func__, drop_rule_idx);
+	return -1;
+}
+
+/**
+ *	rvu_npc_exact_get_drop_rule_info - Get drop rule information.
+ *      @rvu: resource virtualization unit.
+ *	@intf_type: Interface type (CGX, SDP or LBK)
+ *	@cgx_id: CGX identifier.
+ *	@lmac_id: LMAC identifier.
+ *	@drop_mcam_idx: NPC mcam drop rule index.
+ *	@val: Channel value.
+ *	@mask: Channel mask.
+ *	@pcifunc: pcifunc of interface corresponding to the drop rule.
+ */
+static bool rvu_npc_exact_get_drop_rule_info(struct rvu *rvu, u8 intf_type, u8 cgx_id,
+					     u8 lmac_id, u32 *drop_mcam_idx, u64 *val,
+					     u64 *mask, u16 *pcifunc)
+{
+	struct npc_exact_table *table;
+	u64 chan_val, chan_mask;
+	bool rc;
+	int i;
+
+	table = rvu->hw->table;
+
+	if (intf_type != NIX_INTF_TYPE_CGX) {
+		dev_err(rvu->dev, "%s: No drop rule for LBK/SDP mode\n", __func__);
+		return false;
+	}
+
+	rc = rvu_npc_exact_calc_drop_rule_chan_and_mask(rvu, intf_type, cgx_id,
+							lmac_id, &chan_val, &chan_mask);
+
+	for (i = 0; i < NPC_MCAM_DROP_RULE_MAX; i++) {
+		if (!table->drop_rule_map[i].valid)
+			break;
+
+		if (table->drop_rule_map[i].chan_val != (u16)chan_val)
+			continue;
+
+		if (val)
+			*val = table->drop_rule_map[i].chan_val;
+		if (mask)
+			*mask = table->drop_rule_map[i].chan_mask;
+		if (pcifunc)
+			*pcifunc = table->drop_rule_map[i].pcifunc;
+
+		*drop_mcam_idx = i;
+		return true;
+	}
+
+	if (i == NPC_MCAM_DROP_RULE_MAX) {
+		dev_err(rvu->dev, "%s: drop mcam rule index (%d) >= NPC_MCAM_DROP_RULE_MAX\n",
+			__func__, *drop_mcam_idx);
+		return false;
+	}
+
+	dev_err(rvu->dev, "%s: Could not retrieve for cgx=%d, lmac=%d\n",
+		__func__, cgx_id, lmac_id);
+	return false;
+}
+
+/**
+ *	__rvu_npc_exact_cmd_rules_cnt_update - Update number dmac rules against a drop rule.
+ *      @rvu: resource virtualization unit.
+ *	@drop_mcam_idx: NPC mcam drop rule index.
+ *	@val: +1 or -1.
+ *	@enable_or_disable_cam: If no exact match rules against a drop rule, disable it.
+ *
+ *	when first exact match entry against a drop rule is added, enable_or_disable_cam
+ *	is set to true. When last exact match entry against a drop rule is deleted,
+ *	enable_or_disable_cam is set to true.
+ */
+static u16 __rvu_npc_exact_cmd_rules_cnt_update(struct rvu *rvu, int drop_mcam_idx,
+						int val, bool *enable_or_disable_cam)
+{
+	struct npc_exact_table *table;
+	u16 *cnt, old_cnt;
+	bool promisc;
+
+	table = rvu->hw->table;
+	promisc = table->promisc_mode[drop_mcam_idx];
+
+	cnt = &table->cnt_cmd_rules[drop_mcam_idx];
+	old_cnt = *cnt;
+
+	*cnt += val;
+
+	if (!enable_or_disable_cam)
+		goto done;
+
+	*enable_or_disable_cam = false;
+
+	if (promisc)
+		goto done;
+
+	/* If all rules are deleted and not already in promisc mode; disable cam */
+	if (!*cnt && val < 0) {
+		*enable_or_disable_cam = true;
+		goto done;
+	}
+
+	/* If rule got added and not already in promisc mode; enable cam */
+	if (!old_cnt && val > 0) {
+		*enable_or_disable_cam = true;
+		goto done;
+	}
+
+done:
+	return *cnt;
+}
+
+/**
+ *      rvu_npc_exact_del_table_entry_by_id - Delete and free table entry.
+ *      @rvu: resource virtualization unit.
+ *	@seq_id: Sequence identifier of the entry.
+ *
+ *	Deletes entry from linked lists and free up slot in HW MEM or CAM
+ *	table.
+ */
+static int rvu_npc_exact_del_table_entry_by_id(struct rvu *rvu, u32 seq_id)
+{
+	struct npc_exact_table_entry *entry = NULL;
+	struct npc_exact_table *table;
+	u32 drop_mcam_idx;
+	bool disable_cam;
+	int *cnt;
+
+	table = rvu->hw->table;
+
+	mutex_lock(&table->lock);
+
+	/* Lookup for entry which needs to be updated */
+	entry = __rvu_npc_exact_find_entry_by_seq_id(rvu, seq_id);
+	if (!entry) {
+		dev_dbg(rvu->dev, "%s: failed to find entry for id=0x%x\n", __func__, seq_id);
+		mutex_unlock(&table->lock);
+		return -ENODATA;
+	}
+
+	cnt = (entry->opc_type == NPC_EXACT_OPC_CAM) ? &table->cam_tbl_entry_cnt :
+				&table->mem_tbl_entry_cnt;
+
+	/* delete from lists */
+	list_del_init(&entry->list);
+	list_del_init(&entry->glist);
+
+	(*cnt)--;
+
+	rvu_npc_exact_get_drop_rule_info(rvu, NIX_INTF_TYPE_CGX, entry->cgx_id, entry->lmac_id,
+					 &drop_mcam_idx, NULL, NULL, NULL);
+
+	if (entry->cmd)
+		__rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, -1, &disable_cam);
+
+	/* No dmac filter rules; disable drop on hit rule */
+	if (disable_cam) {
+		rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, false);
+		dev_dbg(rvu->dev, "%s: Disabling mcam idx %d\n",
+			__func__, drop_mcam_idx);
+	}
+
+	mutex_unlock(&table->lock);
+
+	rvu_npc_exact_dealloc_table_entry(rvu, entry->opc_type, entry->ways, entry->index);
+
+	rvu_npc_exact_free_id(rvu, seq_id);
+
+	dev_dbg(rvu->dev, "%s: delete entry success for id=0x%x, mca=%pM\n",
+		__func__, seq_id, entry->mac);
+	kfree(entry);
+
+	return 0;
+}
+
+/**
+ *      rvu_npc_exact_add_table_entry - Adds a table entry
+ *      @rvu: resource virtualization unit.
+ *	@cgx_id: cgx identifier.
+ *	@lmac_id: lmac identifier.
+ *	@mac: MAC address.
+ *	@chan: Channel number.
+ *	@ctype: Channel Type.
+ *	@seq_id: Sequence number.
+ *	@cmd: Whether it is invoked by ethtool cmd.
+ *	@mcam_idx: NPC mcam index corresponding to MAC
+ *	@pcifunc: PCI func.
+ *
+ *	Creates a new exact match table entry in either CAM or
+ *	MEM table.
+ */
+static int rvu_npc_exact_add_table_entry(struct rvu *rvu, u8 cgx_id, u8 lmac_id, u8 *mac,
+					 u16 chan, u8 ctype, u32 *seq_id, bool cmd,
+					 u32 mcam_idx, u16 pcifunc)
+{
+	int blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+	enum npc_exact_opc_type opc_type;
+	struct npc_exact_table *table;
+	u32 drop_mcam_idx;
+	bool enable_cam;
+	u32 index;
+	u64 mdata;
+	int err;
+	u8 ways;
+
+	table = rvu->hw->table;
+
+	ctype = 0;
+
+	err = rvu_npc_exact_alloc_table_entry(rvu, mac, chan, ctype, &index, &ways, &opc_type);
+	if (err) {
+		dev_err(rvu->dev, "%s: Could not alloc in exact match table\n", __func__);
+		return err;
+	}
+
+	/* Write mdata to table */
+	mdata = rvu_exact_prepare_table_entry(rvu, true, ctype, chan, mac);
+
+	if (opc_type == NPC_EXACT_OPC_CAM)
+		rvu_npc_exact_cam_table_write(rvu, blkaddr, index, mdata);
+	else
+		rvu_npc_exact_mem_table_write(rvu, blkaddr, ways, index,  mdata);
+
+	/* Insert entry to linked list */
+	err = rvu_npc_exact_add_to_list(rvu, opc_type, ways, index, cgx_id, lmac_id,
+					mac, chan, ctype, seq_id, cmd, mcam_idx, pcifunc);
+	if (err) {
+		rvu_npc_exact_dealloc_table_entry(rvu, opc_type, ways, index);
+		dev_err(rvu->dev, "%s: could not add to exact match table\n", __func__);
+		return err;
+	}
+
+	rvu_npc_exact_get_drop_rule_info(rvu, NIX_INTF_TYPE_CGX, cgx_id, lmac_id,
+					 &drop_mcam_idx, NULL, NULL, NULL);
+	if (cmd)
+		__rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, 1, &enable_cam);
+
+	/* First command rule; enable drop on hit rule */
+	if (enable_cam) {
+		rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, true);
+		dev_dbg(rvu->dev, "%s: Enabling mcam idx %d\n",
+			__func__, drop_mcam_idx);
+	}
+
+	dev_dbg(rvu->dev,
+		"%s: Successfully added entry (index=%d, dmac=%pM, ways=%d opc_type=%d\n",
+		__func__, index, mac, ways, opc_type);
+
+	return 0;
+}
+
+/**
+ *      rvu_npc_exact_update_table_entry - Update exact match table.
+ *      @rvu: resource virtualization unit.
+ *	@cgx_id: CGX identifier.
+ *	@lamc_id: LMAC identifier.
+ *	@old_mac: Existing MAC address entry.
+ *	@new_mac: New MAC address entry.
+ *	@seq_id: Sequence identifier of the entry.
+ *
+ *	Updates MAC address of an entry. If entry is in MEM table, new
+ *	hash value may not match with old one.
+ */
+static int rvu_npc_exact_update_table_entry(struct rvu *rvu, u8 cgx_id, u8 lmac_id,
+					    u8 *old_mac, u8 *new_mac, u32 *seq_id)
+{
+	int blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+	struct npc_exact_table_entry *entry;
+	struct npc_exact_table *table;
+	u32 hash_index;
+	u64 mdata;
+
+	table = rvu->hw->table;
+
+	mutex_lock(&table->lock);
+
+	/* Lookup for entry which needs to be updated */
+	entry = __rvu_npc_exact_find_entry_by_seq_id(rvu, *seq_id);
+	if (!entry) {
+		mutex_unlock(&table->lock);
+		dev_dbg(rvu->dev,
+			"%s: failed to find entry for cgx_id=%d lmac_id=%d old_mac=%pM\n",
+			__func__, cgx_id, lmac_id, old_mac);
+		return -ENODATA;
+	}
+
+	/* If entry is in mem table and new hash index is different than old
+	 * hash index, we cannot update the entry. Fail in these scenarios.
+	 */
+	if (entry->opc_type == NPC_EXACT_OPC_MEM) {
+		hash_index =  rvu_exact_calculate_hash(rvu, entry->chan, entry->ctype,
+						       new_mac, table->mem_table.mask,
+						       table->mem_table.depth);
+		if (hash_index != entry->index) {
+			dev_dbg(rvu->dev,
+				"%s: Update failed due to index mismatch(new=0x%x, old=%x)\n",
+				__func__, hash_index, entry->index);
+			mutex_unlock(&table->lock);
+			return -EINVAL;
+		}
+	}
+
+	mdata = rvu_exact_prepare_table_entry(rvu, true, entry->ctype, entry->chan, new_mac);
+
+	if (entry->opc_type == NPC_EXACT_OPC_MEM)
+		rvu_npc_exact_mem_table_write(rvu, blkaddr, entry->ways, entry->index, mdata);
+	else
+		rvu_npc_exact_cam_table_write(rvu, blkaddr, entry->index, mdata);
+
+	/* Update entry fields */
+	ether_addr_copy(entry->mac, new_mac);
+	*seq_id = entry->seq_id;
+
+	dev_dbg(rvu->dev,
+		"%s: Successfully updated entry (index=%d, dmac=%pM, ways=%d opc_type=%d\n",
+		__func__, hash_index, entry->mac, entry->ways, entry->opc_type);
+
+	dev_dbg(rvu->dev, "%s: Successfully updated entry (old mac=%pM new_mac=%pM\n",
+		__func__, old_mac, new_mac);
+
+	mutex_unlock(&table->lock);
+	return 0;
+}
+
+/**
+ *	rvu_npc_exact_promisc_disable - Disable promiscuous mode.
+ *      @rvu: resource virtualization unit.
+ *	@pcifunc: pcifunc
+ *
+ *	Drop rule is against each PF. We dont support DMAC filter for
+ *	VF.
+ */
+
+int rvu_npc_exact_promisc_disable(struct rvu *rvu, u16 pcifunc)
+{
+	struct npc_exact_table *table;
+	int pf = rvu_get_pf(pcifunc);
+	u8 cgx_id, lmac_id;
+	u32 drop_mcam_idx;
+	bool *promisc;
+	u32 cnt;
+
+	table = rvu->hw->table;
+
+	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+	rvu_npc_exact_get_drop_rule_info(rvu, NIX_INTF_TYPE_CGX, cgx_id, lmac_id,
+					 &drop_mcam_idx, NULL, NULL, NULL);
+
+	mutex_lock(&table->lock);
+	promisc = &table->promisc_mode[drop_mcam_idx];
+
+	if (!*promisc) {
+		mutex_unlock(&table->lock);
+		dev_dbg(rvu->dev, "%s: Err Already promisc mode disabled (cgx=%d lmac=%d)\n",
+			__func__, cgx_id, lmac_id);
+		return LMAC_AF_ERR_INVALID_PARAM;
+	}
+	*promisc = false;
+	cnt = __rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, 0, NULL);
+	mutex_unlock(&table->lock);
+
+	/* If no dmac filter entries configured, disable drop rule */
+	if (!cnt)
+		rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, false);
+	else
+		rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, !*promisc);
+
+	dev_dbg(rvu->dev, "%s: disabled  promisc mode (cgx=%d lmac=%d, cnt=%d)\n",
+		__func__, cgx_id, lmac_id, cnt);
+	return 0;
+}
+
+/**
+ *	rvu_npc_exact_promisc_enable - Enable promiscuous mode.
+ *      @rvu: resource virtualization unit.
+ *	@pcifunc: pcifunc.
+ */
+int rvu_npc_exact_promisc_enable(struct rvu *rvu, u16 pcifunc)
+{
+	struct npc_exact_table *table;
+	int pf = rvu_get_pf(pcifunc);
+	u8 cgx_id, lmac_id;
+	u32 drop_mcam_idx;
+	bool *promisc;
+	u32 cnt;
+
+	table = rvu->hw->table;
+
+	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+	rvu_npc_exact_get_drop_rule_info(rvu, NIX_INTF_TYPE_CGX, cgx_id, lmac_id,
+					 &drop_mcam_idx, NULL, NULL, NULL);
+
+	mutex_lock(&table->lock);
+	promisc = &table->promisc_mode[drop_mcam_idx];
+
+	if (*promisc) {
+		mutex_unlock(&table->lock);
+		dev_dbg(rvu->dev, "%s: Already in promisc mode (cgx=%d lmac=%d)\n",
+			__func__, cgx_id, lmac_id);
+		return LMAC_AF_ERR_INVALID_PARAM;
+	}
+	*promisc = true;
+	cnt = __rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, 0, NULL);
+	mutex_unlock(&table->lock);
+
+	/* If no dmac filter entries configured, disable drop rule */
+	if (!cnt)
+		rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, false);
+	else
+		rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, !*promisc);
+
+	dev_dbg(rvu->dev, "%s: Enabled promisc mode (cgx=%d lmac=%d cnt=%d)\n",
+		__func__, cgx_id, lmac_id, cnt);
+	return 0;
+}
+
+/**
+ *	rvu_npc_exact_mac_addr_reset - Delete PF mac address.
+ *      @rvu: resource virtualization unit.
+ *	@req: Reset request
+ *	@rsp: Reset response.
+ */
+int rvu_npc_exact_mac_addr_reset(struct rvu *rvu, struct cgx_mac_addr_reset_req *req,
+				 struct msg_rsp *rsp)
+{
+	int pf = rvu_get_pf(req->hdr.pcifunc);
+	u32 seq_id = req->index;
+	struct rvu_pfvf *pfvf;
+	u8 cgx_id, lmac_id;
+	int rc;
+
+	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+
+	pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
+
+	rc = rvu_npc_exact_del_table_entry_by_id(rvu, seq_id);
+	if (rc) {
+		/* TODO: how to handle this error case ? */
+		dev_err(rvu->dev, "%s MAC (%pM) del PF=%d failed\n", __func__, pfvf->mac_addr, pf);
+		return 0;
+	}
+
+	dev_dbg(rvu->dev, "%s MAC (%pM) del PF=%d success (seq_id=%u)\n",
+		__func__, pfvf->mac_addr, pf, seq_id);
+	return 0;
+}
+
+/**
+ *	rvu_npc_exact_mac_addr_update - Update mac address field with new value.
+ *      @rvu: resource virtualization unit.
+ *	@req: Update request.
+ *	@rsp: Update response.
+ */
+int rvu_npc_exact_mac_addr_update(struct rvu *rvu,
+				  struct cgx_mac_addr_update_req *req,
+				  struct cgx_mac_addr_update_rsp *rsp)
+{
+	int pf = rvu_get_pf(req->hdr.pcifunc);
+	struct npc_exact_table_entry *entry;
+	struct npc_exact_table *table;
+	struct rvu_pfvf *pfvf;
+	u32 seq_id, mcam_idx;
+	u8 old_mac[ETH_ALEN];
+	u8 cgx_id, lmac_id;
+	int rc;
+
+	if (!is_cgx_config_permitted(rvu, req->hdr.pcifunc))
+		return LMAC_AF_ERR_PERM_DENIED;
+
+	dev_dbg(rvu->dev, "%s: Update request for seq_id=%d, mac=%pM\n",
+		__func__, req->index, req->mac_addr);
+
+	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+
+	pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
+
+	table = rvu->hw->table;
+
+	mutex_lock(&table->lock);
+
+	/* Lookup for entry which needs to be updated */
+	entry = __rvu_npc_exact_find_entry_by_seq_id(rvu, req->index);
+	if (!entry) {
+		dev_err(rvu->dev, "%s: failed to find entry for id=0x%x\n", __func__, req->index);
+		mutex_unlock(&table->lock);
+		return LMAC_AF_ERR_EXACT_MATCH_TBL_LOOK_UP_FAILED;
+	}
+	ether_addr_copy(old_mac, entry->mac);
+	seq_id = entry->seq_id;
+	mcam_idx = entry->mcam_idx;
+	mutex_unlock(&table->lock);
+
+	rc = rvu_npc_exact_update_table_entry(rvu, cgx_id, lmac_id,  old_mac,
+					      req->mac_addr, &seq_id);
+	if (!rc) {
+		rsp->index = seq_id;
+		dev_dbg(rvu->dev, "%s  mac:%pM (pfvf:%pM default:%pM) update to PF=%d success\n",
+			__func__, req->mac_addr, pfvf->mac_addr, pfvf->default_mac, pf);
+		ether_addr_copy(pfvf->mac_addr, req->mac_addr);
+		return 0;
+	}
+
+	/* Try deleting and adding it again */
+	rc = rvu_npc_exact_del_table_entry_by_id(rvu, req->index);
+	if (rc) {
+		/* This could be a new entry */
+		dev_dbg(rvu->dev, "%s MAC (%pM) del PF=%d failed\n", __func__,
+			pfvf->mac_addr, pf);
+	}
+
+	rc = rvu_npc_exact_add_table_entry(rvu, cgx_id, lmac_id, req->mac_addr,
+					   pfvf->rx_chan_base, 0, &seq_id, true,
+					   mcam_idx, req->hdr.pcifunc);
+	if (rc) {
+		dev_err(rvu->dev, "%s MAC (%pM) add PF=%d failed\n", __func__,
+			req->mac_addr, pf);
+		return LMAC_AF_ERR_EXACT_MATCH_TBL_ADD_FAILED;
+	}
+
+	rsp->index = seq_id;
+	dev_dbg(rvu->dev,
+		"%s MAC (new:%pM, old=%pM default:%pM) del and add to PF=%d success (seq_id=%u)\n",
+		__func__, req->mac_addr, pfvf->mac_addr, pfvf->default_mac, pf, seq_id);
+
+	ether_addr_copy(pfvf->mac_addr, req->mac_addr);
+	return 0;
+}
+
+/**
+ *	rvu_npc_exact_mac_addr_add - Adds MAC address to exact match table.
+ *      @rvu: resource virtualization unit.
+ *	@req: Add request.
+ *	@rsp: Add response.
+ */
+int rvu_npc_exact_mac_addr_add(struct rvu *rvu,
+			       struct cgx_mac_addr_add_req *req,
+			       struct cgx_mac_addr_add_rsp *rsp)
+{
+	int pf = rvu_get_pf(req->hdr.pcifunc);
+	struct rvu_pfvf *pfvf;
+	u8 cgx_id, lmac_id;
+	int rc = 0;
+	u32 seq_id;
+
+	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+	pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
+
+	rc = rvu_npc_exact_add_table_entry(rvu, cgx_id, lmac_id, req->mac_addr,
+					   pfvf->rx_chan_base, 0, &seq_id,
+					   true, -1, req->hdr.pcifunc);
+
+	if (!rc) {
+		rsp->index = seq_id;
+		dev_dbg(rvu->dev, "%s MAC (%pM) add to PF=%d success (seq_id=%u)\n",
+			__func__, req->mac_addr, pf, seq_id);
+		return 0;
+	}
+
+	dev_err(rvu->dev, "%s MAC (%pM) add to PF=%d failed\n", __func__,
+		req->mac_addr, pf);
+	return LMAC_AF_ERR_EXACT_MATCH_TBL_ADD_FAILED;
+}
+
+/**
+ *	rvu_npc_exact_mac_addr_del - Delete DMAC filter
+ *      @rvu: resource virtualization unit.
+ *	@req: Delete request.
+ *	@rsp: Delete response.
+ */
+int rvu_npc_exact_mac_addr_del(struct rvu *rvu,
+			       struct cgx_mac_addr_del_req *req,
+			       struct msg_rsp *rsp)
+{
+	int pf = rvu_get_pf(req->hdr.pcifunc);
+	int rc;
+
+	rc = rvu_npc_exact_del_table_entry_by_id(rvu, req->index);
+	if (!rc) {
+		dev_dbg(rvu->dev, "%s del to PF=%d success (seq_id=%u)\n",
+			__func__, pf, req->index);
+		return 0;
+	}
+
+	dev_err(rvu->dev, "%s del to PF=%d failed (seq_id=%u)\n",
+		__func__,  pf, req->index);
+	return LMAC_AF_ERR_EXACT_MATCH_TBL_DEL_FAILED;
+}
+
+/**
+ *	rvu_npc_exact_mac_addr_set - Add PF mac address to dmac filter.
+ *      @rvu: resource virtualization unit.
+ *	@req: Set request.
+ *	@rsp: Set response.
+ */
+int rvu_npc_exact_mac_addr_set(struct rvu *rvu, struct cgx_mac_addr_set_or_get *req,
+			       struct cgx_mac_addr_set_or_get *rsp)
+{
+	int pf = rvu_get_pf(req->hdr.pcifunc);
+	u32 seq_id = req->index;
+	struct rvu_pfvf *pfvf;
+	u8 cgx_id, lmac_id;
+	u32 mcam_idx = -1;
+	int rc, nixlf;
+
+	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+
+	pfvf = &rvu->pf[pf];
+
+	/* If table does not have an entry; both update entry and del table entry API
+	 * below fails. Those are not failure conditions.
+	 */
+	rc = rvu_npc_exact_update_table_entry(rvu, cgx_id, lmac_id, pfvf->mac_addr,
+					      req->mac_addr, &seq_id);
+	if (!rc) {
+		rsp->index = seq_id;
+		ether_addr_copy(pfvf->mac_addr, req->mac_addr);
+		ether_addr_copy(rsp->mac_addr, req->mac_addr);
+		dev_dbg(rvu->dev, "%s MAC (%pM) update to PF=%d success\n",
+			__func__, req->mac_addr, pf);
+		return 0;
+	}
+
+	/* Try deleting and adding it again */
+	rc = rvu_npc_exact_del_table_entry_by_id(rvu, req->index);
+	if (rc) {
+		dev_dbg(rvu->dev, "%s MAC (%pM) del PF=%d failed\n",
+			__func__, pfvf->mac_addr, pf);
+	}
+
+	/* find mcam entry if exist */
+	rc = nix_get_nixlf(rvu, req->hdr.pcifunc, &nixlf, NULL);
+	if (!rc) {
+		mcam_idx = npc_get_nixlf_mcam_index(&rvu->hw->mcam, req->hdr.pcifunc,
+						    nixlf, NIXLF_UCAST_ENTRY);
+	}
+
+	rc = rvu_npc_exact_add_table_entry(rvu, cgx_id, lmac_id, req->mac_addr,
+					   pfvf->rx_chan_base, 0, &seq_id,
+					   true, mcam_idx, req->hdr.pcifunc);
+	if (rc) {
+		dev_err(rvu->dev, "%s MAC (%pM) add PF=%d failed\n",
+			__func__, req->mac_addr, pf);
+		return LMAC_AF_ERR_EXACT_MATCH_TBL_ADD_FAILED;
+	}
+
+	rsp->index = seq_id;
+	ether_addr_copy(rsp->mac_addr, req->mac_addr);
+	ether_addr_copy(pfvf->mac_addr, req->mac_addr);
+	dev_dbg(rvu->dev,
+		"%s MAC (%pM) del and add to PF=%d success (seq_id=%u)\n",
+		__func__, req->mac_addr, pf, seq_id);
+	return 0;
+}
+
+/**
+ *	rvu_npc_exact_can_disable_feature - Check if feature can be disabled.
+ *      @rvu: resource virtualization unit.
+ */
+bool rvu_npc_exact_can_disable_feature(struct rvu *rvu)
+{
+	struct npc_exact_table *table = rvu->hw->table;
+	bool empty;
+
+	if (!rvu->hw->cap.npc_exact_match_enabled)
+		return false;
+
+	mutex_lock(&table->lock);
+	empty = list_empty(&table->lhead_gbl);
+	mutex_unlock(&table->lock);
+
+	return empty;
+}
+
+/**
+ *	rvu_npc_exact_disable_feature - Disable feature.
+ *      @rvu: resource virtualization unit.
+ */
+void rvu_npc_exact_disable_feature(struct rvu *rvu)
+{
+	rvu->hw->cap.npc_exact_match_enabled = false;
+}
+
+/**
+ *	rvu_npc_exact_reset - Delete and free all entry which match pcifunc.
+ *      @rvu: resource virtualization unit.
+ *	@pcifunc: PCI func to match.
+ */
+void rvu_npc_exact_reset(struct rvu *rvu, u16 pcifunc)
+{
+	struct npc_exact_table *table = rvu->hw->table;
+	struct npc_exact_table_entry *tmp, *iter;
+	u32 seq_id;
+
+	mutex_lock(&table->lock);
+	list_for_each_entry_safe(iter, tmp, &table->lhead_gbl, glist) {
+		if (pcifunc != iter->pcifunc)
+			continue;
+
+		seq_id = iter->seq_id;
+		dev_dbg(rvu->dev, "%s: resetting pcifun=%d seq_id=%u\n", __func__,
+			pcifunc, seq_id);
+
+		mutex_unlock(&table->lock);
+		rvu_npc_exact_del_table_entry_by_id(rvu, seq_id);
+		mutex_lock(&table->lock);
+	}
+	mutex_unlock(&table->lock);
+}
+
+/**
+ *      rvu_npc_exact_init - initialize exact match table
+ *      @rvu: resource virtualization unit.
+ *
+ *	Initialize HW and SW resources to manage 4way-2K table and fully
+	u8 cgx_id, lmac_id;
+ *	associative 32-entry mcam table.
+ */
+int rvu_npc_exact_init(struct rvu *rvu)
+{
+	u64 bcast_mcast_val, bcast_mcast_mask;
+	struct npc_exact_table *table;
+	u64 exact_val, exact_mask;
+	u64 chan_val, chan_mask;
+	u8 cgx_id, lmac_id;
+	u32 *drop_mcam_idx;
+	u16 max_lmac_cnt;
+	u64 npc_const3;
+	int table_size;
+	int blkaddr;
+	u16 pcifunc;
+	int err, i;
+	u64 cfg;
+	bool rc;
+
+	/* Read NPC_AF_CONST3 and check for have exact
+	 * match functionality is present
+	 */
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+	if (blkaddr < 0) {
+		dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__);
+		return -EINVAL;
+	}
+
+	/* Check exact match feature is supported */
+	npc_const3 = rvu_read64(rvu, blkaddr, NPC_AF_CONST3);
+	if (!(npc_const3 & BIT_ULL(62))) {
+		dev_info(rvu->dev, "%s: No support for exact match support\n",
+			 __func__);
+		return 0;
+	}
+
+	/* Check if kex profile has enabled EXACT match nibble */
+	cfg = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(NIX_INTF_RX));
+	if (!(cfg & NPC_EXACT_NIBBLE_HIT)) {
+		dev_info(rvu->dev, "%s: NPC exact match nibble not enabled in KEX profile\n",
+			 __func__);
+		return 0;
+	}
+
+	/* Set capability to true */
+	rvu->hw->cap.npc_exact_match_enabled = true;
+
+	table = kmalloc(sizeof(*table), GFP_KERNEL);
+	if (!table)
+		return -ENOMEM;
+
+	dev_dbg(rvu->dev, "%s: Memory allocation for table success\n", __func__);
+	memset(table, 0, sizeof(*table));
+	rvu->hw->table = table;
+
+	/* Read table size, ways and depth */
+	table->mem_table.depth = FIELD_GET(GENMASK_ULL(31, 24), npc_const3);
+	table->mem_table.ways = FIELD_GET(GENMASK_ULL(19, 16), npc_const3);
+	table->cam_table.depth = FIELD_GET(GENMASK_ULL(15, 0), npc_const3);
+
+	dev_dbg(rvu->dev, "%s: NPC exact match 4way_2k table(ways=%d, depth=%d)\n",
+		__func__,  table->mem_table.ways, table->cam_table.depth);
+
+	/* Check if depth of table is not a sequre of 2
+	 * TODO: why _builtin_popcount() is not working ?
+	 */
+	if ((table->mem_table.depth & (table->mem_table.depth - 1)) != 0) {
+		dev_err(rvu->dev,
+			"%s: NPC exact match 4way_2k table depth(%d) is not square of 2\n",
+			__func__,  table->mem_table.depth);
+		return -EINVAL;
+	}
+
+	table_size = table->mem_table.depth * table->mem_table.ways;
+
+	/* Allocate bitmap for 4way 2K table */
+	table->mem_table.bmap = devm_kcalloc(rvu->dev, BITS_TO_LONGS(table_size),
+					     sizeof(long), GFP_KERNEL);
+	if (!table->mem_table.bmap)
+		return -ENOMEM;
+
+	dev_dbg(rvu->dev, "%s: Allocated bitmap for 4way 2K entry table\n", __func__);
+
+	/* Allocate bitmap for 32 entry mcam */
+	table->cam_table.bmap = devm_kcalloc(rvu->dev, 1, sizeof(long), GFP_KERNEL);
+
+	if (!table->cam_table.bmap)
+		return -ENOMEM;
+
+	dev_dbg(rvu->dev, "%s: Allocated bitmap for 32 entry cam\n", __func__);
+
+	table->tot_ids = (table->mem_table.depth * table->mem_table.ways) + table->cam_table.depth;
+	table->id_bmap = devm_kcalloc(rvu->dev, BITS_TO_LONGS(table->tot_ids),
+				      table->tot_ids, GFP_KERNEL);
+
+	if (!table->id_bmap)
+		return -ENOMEM;
+
+	dev_dbg(rvu->dev, "%s: Allocated bitmap for id map (total=%d)\n",
+		__func__, table->tot_ids);
+
+	/* Initialize list heads for npc_exact_table entries.
+	 * This entry is used by debugfs to show entries in
+	 * exact match table.
+	 */
+	for (i = 0; i < NPC_EXACT_TBL_MAX_WAYS; i++)
+		INIT_LIST_HEAD(&table->lhead_mem_tbl_entry[i]);
+
+	INIT_LIST_HEAD(&table->lhead_cam_tbl_entry);
+	INIT_LIST_HEAD(&table->lhead_gbl);
+
+	mutex_init(&table->lock);
+
+	rvu_exact_config_secret_key(rvu);
+	rvu_exact_config_search_key(rvu);
+
+	rvu_exact_config_table_mask(rvu);
+	rvu_exact_config_result_ctrl(rvu, table->mem_table.depth);
+
+	/* - No drop rule for LBK
+	 * - Drop rules for SDP and each LMAC.
+	 */
+	exact_val = !NPC_EXACT_RESULT_HIT;
+	exact_mask = NPC_EXACT_RESULT_HIT;
+
+	/* nibble - 3	2  1   0
+	 *	   L3B L3M L2B L2M
+	 */
+	bcast_mcast_val = 0b0000;
+	bcast_mcast_mask = 0b0011;
+
+	/* Install SDP drop rule */
+	drop_mcam_idx = &table->num_drop_rules;
+
+	max_lmac_cnt = rvu->cgx_cnt_max * MAX_LMAC_PER_CGX + PF_CGXMAP_BASE;
+	for (i = PF_CGXMAP_BASE; i < max_lmac_cnt; i++) {
+		if (rvu->pf2cgxlmac_map[i] == 0xFF)
+			continue;
+
+		rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[i], &cgx_id, &lmac_id);
+
+		rc = rvu_npc_exact_calc_drop_rule_chan_and_mask(rvu, NIX_INTF_TYPE_CGX, cgx_id,
+								lmac_id, &chan_val, &chan_mask);
+		if (!rc) {
+			dev_err(rvu->dev,
+				"%s: failed, info chan_val=0x%llx chan_mask=0x%llx rule_id=%d\n",
+				__func__, chan_val, chan_mask, *drop_mcam_idx);
+			return -EINVAL;
+		}
+
+		/* Filter rules are only for PF */
+		pcifunc = RVU_PFFUNC(i, 0);
+
+		dev_dbg(rvu->dev,
+			"%s:Drop rule cgx=%d lmac=%d chan(val=0x%llx, mask=0x%llx\n",
+			__func__, cgx_id, lmac_id, chan_val, chan_mask);
+
+		rc = rvu_npc_exact_save_drop_rule_chan_and_mask(rvu, table->num_drop_rules,
+								chan_val, chan_mask, pcifunc);
+		if (!rc) {
+			dev_err(rvu->dev,
+				"%s: failed to set drop info for cgx=%d, lmac=%d, chan=%llx\n",
+				__func__, cgx_id, lmac_id, chan_val);
+			return err;
+		}
+
+		err = npc_install_mcam_drop_rule(rvu, *drop_mcam_idx,
+						 &table->counter_idx[*drop_mcam_idx],
+						 chan_val, chan_mask,
+						 exact_val, exact_mask,
+						 bcast_mcast_val, bcast_mcast_mask);
+		if (err) {
+			dev_err(rvu->dev,
+				"failed to configure drop rule (cgx=%d lmac=%d)\n",
+				cgx_id, lmac_id);
+			return err;
+		}
+
+		(*drop_mcam_idx)++;
+	}
+
+	dev_info(rvu->dev, "initialized exact match table successfully\n");
+	return 0;
+}

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

···
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU Admin Function driver
+ *
+ * Copyright (C) 2022 Marvell.
+ *
+ */
+
+#ifndef __RVU_NPC_HASH_H
+#define __RVU_NPC_HASH_H
+
+#define RVU_NPC_HASH_SECRET_KEY0 0xa9d5af4c9fbc76b1
+#define RVU_NPC_HASH_SECRET_KEY1 0xa9d5af4c9fbc87b4
+#define RVU_NPC_HASH_SECRET_KEY2 0x5954c9e7
+
+#define NPC_MAX_HASH 2
+#define NPC_MAX_HASH_MASK 2
+
+#define KEX_LD_CFG_USE_HASH(use_hash, bytesm1, hdr_ofs, ena, flags_ena, key_ofs) \
+			    ((use_hash) << 20 | ((bytesm1) << 16) | ((hdr_ofs) << 8) | \
+			     ((ena) << 7) | ((flags_ena) << 6) | ((key_ofs) & 0x3F))
+#define KEX_LD_CFG_HASH(hdr_ofs, bytesm1, lt_en, lid_en, lid, ltype_match, ltype_mask)	\
+			(((hdr_ofs) << 32) | ((bytesm1) << 16) | \
+			 ((lt_en) << 12) | ((lid_en) << 11) | ((lid) << 8) | \
+			 ((ltype_match) << 4) | ((ltype_mask) & 0xF))
+
+#define SET_KEX_LD_HASH(intf, ld, cfg) \
+	rvu_write64(rvu, blkaddr,	\
+		    NPC_AF_INTFX_HASHX_CFG(intf, ld), cfg)
+
+#define SET_KEX_LD_HASH_MASK(intf, ld, mask_idx, cfg) \
+	rvu_write64(rvu, blkaddr,	\
+		    NPC_AF_INTFX_HASHX_MASKX(intf, ld, mask_idx), cfg)
+
+#define SET_KEX_LD_HASH_CTRL(intf, ld, cfg) \
+	rvu_write64(rvu, blkaddr,	\
+		    NPC_AF_INTFX_HASHX_RESULT_CTRL(intf, ld), cfg)
+
+struct npc_mcam_kex_hash {
+	/* NPC_AF_INTF(0..1)_LID(0..7)_LT(0..15)_LD(0..1)_CFG */
+	bool lid_lt_ld_hash_en[NPC_MAX_INTF][NPC_MAX_LID][NPC_MAX_LT][NPC_MAX_LD];
+	/* NPC_AF_INTF(0..1)_HASH(0..1)_CFG */
+	u64 hash[NPC_MAX_INTF][NPC_MAX_HASH];
+	/* NPC_AF_INTF(0..1)_HASH(0..1)_MASK(0..1) */
+	u64 hash_mask[NPC_MAX_INTF][NPC_MAX_HASH][NPC_MAX_HASH_MASK];
+	/* NPC_AF_INTF(0..1)_HASH(0..1)_RESULT_CTRL */
+	u64 hash_ctrl[NPC_MAX_INTF][NPC_MAX_HASH];
+} __packed;
+
+void npc_update_field_hash(struct rvu *rvu, u8 intf,
+			   struct mcam_entry *entry,
+			   int blkaddr,
+			   u64 features,
+			   struct flow_msg *pkt,
+			   struct flow_msg *mask,
+			   struct flow_msg *opkt,
+			   struct flow_msg *omask);
+void npc_config_secret_key(struct rvu *rvu, int blkaddr);
+void npc_program_mkex_hash(struct rvu *rvu, int blkaddr);
+u32 npc_field_hash_calc(u64 *ldata, struct npc_mcam_kex_hash *mkex_hash,
+			u64 *secret_key, u8 intf, u8 hash_idx);
+
+static struct npc_mcam_kex_hash npc_mkex_hash_default __maybe_unused = {
+	.lid_lt_ld_hash_en = {
+	[NIX_INTF_RX] = {
+		[NPC_LID_LC] = {
+			[NPC_LT_LC_IP6] = {
+				true,
+				true,
+			},
+		},
+	},
+
+	[NIX_INTF_TX] = {
+		[NPC_LID_LC] = {
+			[NPC_LT_LC_IP6] = {
+				true,
+				true,
+			},
+		},
+	},
+	},
+
+	.hash = {
+	[NIX_INTF_RX] = {
+		KEX_LD_CFG_HASH(0x8ULL, 0xf, 0x1, 0x1, NPC_LID_LC, NPC_LT_LC_IP6, 0xf),
+		KEX_LD_CFG_HASH(0x18ULL, 0xf, 0x1, 0x1, NPC_LID_LC, NPC_LT_LC_IP6, 0xf),
+	},
+
+	[NIX_INTF_TX] = {
+		KEX_LD_CFG_HASH(0x8ULL, 0xf, 0x1, 0x1, NPC_LID_LC, NPC_LT_LC_IP6, 0xf),
+		KEX_LD_CFG_HASH(0x18ULL, 0xf, 0x1, 0x1, NPC_LID_LC, NPC_LT_LC_IP6, 0xf),
+	},
+	},
+
+	.hash_mask = {
+	[NIX_INTF_RX] = {
+		[0] = {
+			GENMASK_ULL(63, 0),
+			GENMASK_ULL(63, 0),
+		},
+		[1] = {
+			GENMASK_ULL(63, 0),
+			GENMASK_ULL(63, 0),
+		},
+	},
+
+	[NIX_INTF_TX] = {
+		[0] = {
+			GENMASK_ULL(63, 0),
+			GENMASK_ULL(63, 0),
+		},
+		[1] = {
+			GENMASK_ULL(63, 0),
+			GENMASK_ULL(63, 0),
+		},
+	},
+	},
+
+	.hash_ctrl = {
+	[NIX_INTF_RX] = {
+		[0] = GENMASK_ULL(63, 32), /* MSB 32 bit is mask and LSB 32 bit is offset. */
+		[1] = GENMASK_ULL(63, 32), /* MSB 32 bit is mask and LSB 32 bit is offset. */
+	},
+
+	[NIX_INTF_TX] = {
+		[0] = GENMASK_ULL(63, 32), /* MSB 32 bit is mask and LSB 32 bit is offset. */
+		[1] = GENMASK_ULL(63, 32), /* MSB 32 bit is mask and LSB 32 bit is offset. */
+	},
+	},
+};
+
+/* If exact match table support is enabled, enable drop rules */
+#define NPC_MCAM_DROP_RULE_MAX 30
+#define NPC_MCAM_SDP_DROP_RULE_IDX 0
+
+#define RVU_PFFUNC(pf, func)	\
+	((((pf) & RVU_PFVF_PF_MASK) << RVU_PFVF_PF_SHIFT) | \
+	(((func) & RVU_PFVF_FUNC_MASK) << RVU_PFVF_FUNC_SHIFT))
+
+enum npc_exact_opc_type {
+	NPC_EXACT_OPC_MEM,
+	NPC_EXACT_OPC_CAM,
+};
+
+struct npc_exact_table_entry {
+	struct list_head list;
+	struct list_head glist;
+	u32 seq_id;	/* Sequence number of entry */
+	u32 index;	/* Mem table or cam table index */
+	u32 mcam_idx;
+		/* Mcam index. This is valid only if "cmd" field is false */
+	enum npc_exact_opc_type opc_type;
+	u16 chan;
+	u16 pcifunc;
+	u8 ways;
+	u8 mac[ETH_ALEN];
+	u8 ctype;
+	u8 cgx_id;
+	u8 lmac_id;
+	bool cmd;	/* Is added by ethtool command ? */
+};
+
+struct npc_exact_table {
+	struct mutex lock;	/* entries update lock */
+	unsigned long *id_bmap;
+	int num_drop_rules;
+	u32 tot_ids;
+	u16 cnt_cmd_rules[NPC_MCAM_DROP_RULE_MAX];
+	u16 counter_idx[NPC_MCAM_DROP_RULE_MAX];
+	bool promisc_mode[NPC_MCAM_DROP_RULE_MAX];
+	struct {
+		int ways;
+		int depth;
+		unsigned long *bmap;
+		u64 mask;	// Masks before hash calculation.
+		u16 hash_mask;	// 11 bits for hash mask
+		u16 hash_offset; // 11 bits offset
+	} mem_table;
+
+	struct {
+		int depth;
+		unsigned long *bmap;
+	} cam_table;
+
+	struct {
+		bool valid;
+		u16 chan_val;
+		u16 chan_mask;
+		u16 pcifunc;
+		u8 drop_rule_idx;
+	} drop_rule_map[NPC_MCAM_DROP_RULE_MAX];
+
+#define NPC_EXACT_TBL_MAX_WAYS 4
+
+	struct list_head lhead_mem_tbl_entry[NPC_EXACT_TBL_MAX_WAYS];
+	int mem_tbl_entry_cnt;
+
+	struct list_head lhead_cam_tbl_entry;
+	int cam_tbl_entry_cnt;
+
+	struct list_head lhead_gbl;
+};
+
+bool rvu_npc_exact_has_match_table(struct rvu *rvu);
+u32 rvu_npc_exact_get_max_entries(struct rvu *rvu);
+int rvu_npc_exact_init(struct rvu *rvu);
+int rvu_npc_exact_mac_addr_reset(struct rvu *rvu, struct cgx_mac_addr_reset_req *req,
+				 struct msg_rsp *rsp);
+
+int rvu_npc_exact_mac_addr_update(struct rvu *rvu,
+				  struct cgx_mac_addr_update_req *req,
+				  struct cgx_mac_addr_update_rsp *rsp);
+
+int rvu_npc_exact_mac_addr_add(struct rvu *rvu,
+			       struct cgx_mac_addr_add_req *req,
+			       struct cgx_mac_addr_add_rsp *rsp);
+
+int rvu_npc_exact_mac_addr_del(struct rvu *rvu,
+			       struct cgx_mac_addr_del_req *req,
+			       struct msg_rsp *rsp);
+
+int rvu_npc_exact_mac_addr_set(struct rvu *rvu, struct cgx_mac_addr_set_or_get *req,
+			       struct cgx_mac_addr_set_or_get *rsp);
+
+void rvu_npc_exact_reset(struct rvu *rvu, u16 pcifunc);
+
+bool rvu_npc_exact_can_disable_feature(struct rvu *rvu);
+void rvu_npc_exact_disable_feature(struct rvu *rvu);
+void rvu_npc_exact_reset(struct rvu *rvu, u16 pcifunc);
+u16 rvu_npc_exact_drop_rule_to_pcifunc(struct rvu *rvu, u32 drop_rule_idx);
+int rvu_npc_exact_promisc_disable(struct rvu *rvu, u16 pcifunc);
+int rvu_npc_exact_promisc_enable(struct rvu *rvu, u16 pcifunc);
+#endif /* RVU_NPC_HASH_H */

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

···
 #define NPC_AF_PCK_DEF_OIP4		(0x00620)
 #define NPC_AF_PCK_DEF_OIP6		(0x00630)
 #define NPC_AF_PCK_DEF_IIP4		(0x00640)
+#define NPC_AF_INTFX_HASHX_RESULT_CTRL(a, b)	(0x006c0 | (a) << 4 | (b) << 3)
+#define NPC_AF_INTFX_HASHX_MASKX(a, b, c)  (0x00700 | (a) << 5 | (b) << 4 | (c) << 3)
 #define NPC_AF_KEX_LDATAX_FLAGS_CFG(a)	(0x00800 | (a) << 3)
+#define NPC_AF_INTFX_HASHX_CFG(a, b)  (0x00b00 | (a) << 6 | (b) << 4)
+#define NPC_AF_INTFX_SECRET_KEY0(a)	(0x00e00 | (a) << 3)
+#define NPC_AF_INTFX_SECRET_KEY1(a)	(0x00e20 | (a) << 3)
+#define NPC_AF_INTFX_SECRET_KEY2(a)	(0x00e40 | (a) << 3)
 #define NPC_AF_INTFX_KEX_CFG(a)		(0x01010 | (a) << 8)
 #define NPC_AF_PKINDX_ACTION0(a)	(0x80000ull | (a) << 6)
 #define NPC_AF_PKINDX_ACTION1(a)	(0x80008ull | (a) << 6)
···
 #define NPC_AF_MCAM_DBG			(0x3001000)
 #define NPC_AF_DBG_DATAX(a)		(0x3001400 | (a) << 4)
 #define NPC_AF_DBG_RESULTX(a)		(0x3001800 | (a) << 4)
+
+#define NPC_AF_EXACT_MEM_ENTRY(a, b)	(0x300000 | (a) << 15 | (b) << 3)
+#define NPC_AF_EXACT_CAM_ENTRY(a)	(0xC00 | (a) << 3)
+#define NPC_AF_INTFX_EXACT_MASK(a)	(0x660 | (a) << 3)
+#define NPC_AF_INTFX_EXACT_RESULT_CTL(a)(0x680 | (a) << 3)
+#define NPC_AF_INTFX_EXACT_CFG(a)	(0xA00 | (a) << 3)
+#define NPC_AF_INTFX_EXACT_SECRET0(a)	(0xE00 | (a) << 3)
+#define NPC_AF_INTFX_EXACT_SECRET1(a)	(0xE20 | (a) << 3)
+#define NPC_AF_INTFX_EXACT_SECRET2(a)	(0xE40 | (a) << 3)
 
 #define NPC_AF_MCAMEX_BANKX_CAMX_INTF(a, b, c) ({			   \
 	u64 offset;							   \

drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h

···
 #define OTX2_VF_VLAN_TX_INDEX	1
 	u16			max_flows;
 	u8			dmacflt_max_flows;
-	u8			*bmap_to_dmacindex;
-	unsigned long		dmacflt_bmap;
+	u32			*bmap_to_dmacindex;
+	unsigned long		*dmacflt_bmap;
 	struct list_head	flow_list;
 };
 
···
 int otx2_tc_alloc_ent_bitmap(struct otx2_nic *nic);
 /* CGX/RPM DMAC filters support */
 int otx2_dmacflt_get_max_cnt(struct otx2_nic *pf);
-int otx2_dmacflt_add(struct otx2_nic *pf, const u8 *mac, u8 bit_pos);
-int otx2_dmacflt_remove(struct otx2_nic *pf, const u8 *mac, u8 bit_pos);
-int otx2_dmacflt_update(struct otx2_nic *pf, u8 *mac, u8 bit_pos);
+int otx2_dmacflt_add(struct otx2_nic *pf, const u8 *mac, u32 bit_pos);
+int otx2_dmacflt_remove(struct otx2_nic *pf, const u8 *mac, u32 bit_pos);
+int otx2_dmacflt_update(struct otx2_nic *pf, u8 *mac, u32 bit_pos);
 void otx2_dmacflt_reinstall_flows(struct otx2_nic *pf);
 void otx2_dmacflt_update_pfmac_flow(struct otx2_nic *pfvf);
 

drivers/net/ethernet/marvell/octeontx2/nic/otx2_dmac_flt.c

···
 #include "otx2_common.h"
 
 static int otx2_dmacflt_do_add(struct otx2_nic *pf, const u8 *mac,
-			       u8 *dmac_index)
+			       u32 *dmac_index)
 {
 	struct cgx_mac_addr_add_req *req;
 	struct cgx_mac_addr_add_rsp *rsp;
···
 	return err;
 }
 
-static int otx2_dmacflt_add_pfmac(struct otx2_nic *pf)
+static int otx2_dmacflt_add_pfmac(struct otx2_nic *pf, u32 *dmac_index)
 {
 	struct cgx_mac_addr_set_or_get *req;
+	struct cgx_mac_addr_set_or_get *rsp;
 	int err;
 
 	mutex_lock(&pf->mbox.lock);
···
 		return -ENOMEM;
 	}
 
+	req->index = *dmac_index;
+
 	ether_addr_copy(req->mac_addr, pf->netdev->dev_addr);
 	err = otx2_sync_mbox_msg(&pf->mbox);
+
+	if (!err) {
+		rsp = (struct cgx_mac_addr_set_or_get *)
+			 otx2_mbox_get_rsp(&pf->mbox.mbox, 0, &req->hdr);
+		*dmac_index = rsp->index;
+	}
 
 	mutex_unlock(&pf->mbox.lock);
 	return err;
 }
 
-int otx2_dmacflt_add(struct otx2_nic *pf, const u8 *mac, u8 bit_pos)
+int otx2_dmacflt_add(struct otx2_nic *pf, const u8 *mac, u32 bit_pos)
 {
-	u8 *dmacindex;
+	u32 *dmacindex;
 
 	/* Store dmacindex returned by CGX/RPM driver which will
 	 * be used for macaddr update/remove
···
 	dmacindex = &pf->flow_cfg->bmap_to_dmacindex[bit_pos];
 
 	if (ether_addr_equal(mac, pf->netdev->dev_addr))
-		return otx2_dmacflt_add_pfmac(pf);
+		return otx2_dmacflt_add_pfmac(pf, dmacindex);
 	else
 		return otx2_dmacflt_do_add(pf, mac, dmacindex);
 }
 
 static int otx2_dmacflt_do_remove(struct otx2_nic *pfvf, const u8 *mac,
-				  u8 dmac_index)
+				  u32 dmac_index)
 {
 	struct cgx_mac_addr_del_req *req;
 	int err;
···
 	return err;
 }
 
-static int otx2_dmacflt_remove_pfmac(struct otx2_nic *pf)
+static int otx2_dmacflt_remove_pfmac(struct otx2_nic *pf, u32 dmac_index)
 {
-	struct msg_req *req;
+	struct cgx_mac_addr_reset_req *req;
 	int err;
 
 	mutex_lock(&pf->mbox.lock);
···
 		mutex_unlock(&pf->mbox.lock);
 		return -ENOMEM;
 	}
+	req->index = dmac_index;
 
 	err = otx2_sync_mbox_msg(&pf->mbox);
 
···
 }
 
 int otx2_dmacflt_remove(struct otx2_nic *pf, const u8 *mac,
-			u8 bit_pos)
+			u32 bit_pos)
 {
-	u8 dmacindex = pf->flow_cfg->bmap_to_dmacindex[bit_pos];
+	u32 dmacindex = pf->flow_cfg->bmap_to_dmacindex[bit_pos];
 
 	if (ether_addr_equal(mac, pf->netdev->dev_addr))
-		return otx2_dmacflt_remove_pfmac(pf);
+		return otx2_dmacflt_remove_pfmac(pf, dmacindex);
 	else
 		return otx2_dmacflt_do_remove(pf, mac, dmacindex);
 }
···
 	return err;
 }
 
-int otx2_dmacflt_update(struct otx2_nic *pf, u8 *mac, u8 bit_pos)
+int otx2_dmacflt_update(struct otx2_nic *pf, u8 *mac, u32 bit_pos)
 {
 	struct cgx_mac_addr_update_req *req;
+	struct cgx_mac_addr_update_rsp *rsp;
 	int rc;
 
 	mutex_lock(&pf->mbox.lock);
···
 
 	ether_addr_copy(req->mac_addr, mac);
 	req->index = pf->flow_cfg->bmap_to_dmacindex[bit_pos];
-	rc = otx2_sync_mbox_msg(&pf->mbox);
 
+	/* check the response and change index */
+
+	rc = otx2_sync_mbox_msg(&pf->mbox);
+	if (rc)
+		goto out;
+
+	rsp = (struct cgx_mac_addr_update_rsp *)
+		otx2_mbox_get_rsp(&pf->mbox.mbox, 0, &req->hdr);
+
+	pf->flow_cfg->bmap_to_dmacindex[bit_pos] = rsp->index;
+
+out:
 	mutex_unlock(&pf->mbox.lock);
 	return rc;
 }

drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c

···
 	struct ethtool_rx_flow_spec flow_spec;
 	struct list_head list;
 	u32 location;
-	u16 entry;
+	u32 entry;
 	bool is_vf;
 	u8 rss_ctx_id;
 #define DMAC_FILTER_RULE		BIT(0)
···
 	return 0;
 }
 
+/* TODO : revisit on size */
+#define OTX2_DMAC_FLTR_BITMAP_SZ (4 * 2048 + 32)
+
 int otx2vf_mcam_flow_init(struct otx2_nic *pfvf)
 {
 	struct otx2_flow_config *flow_cfg;
···
 				      sizeof(struct otx2_flow_config),
 				      GFP_KERNEL);
 	if (!pfvf->flow_cfg)
+		return -ENOMEM;
+
+	pfvf->flow_cfg->dmacflt_bmap = devm_kcalloc(pfvf->dev,
+						    BITS_TO_LONGS(OTX2_DMAC_FLTR_BITMAP_SZ),
+						    sizeof(long), GFP_KERNEL);
+	if (!pfvf->flow_cfg->dmacflt_bmap)
 		return -ENOMEM;
 
 	flow_cfg = pfvf->flow_cfg;
···
 	pf->flow_cfg = devm_kzalloc(pf->dev, sizeof(struct otx2_flow_config),
 				    GFP_KERNEL);
 	if (!pf->flow_cfg)
+		return -ENOMEM;
+
+	pf->flow_cfg->dmacflt_bmap = devm_kcalloc(pf->dev,
+						  BITS_TO_LONGS(OTX2_DMAC_FLTR_BITMAP_SZ),
+						  sizeof(long), GFP_KERNEL);
+	if (!pf->flow_cfg->dmacflt_bmap)
 		return -ENOMEM;
 
 	INIT_LIST_HEAD(&pf->flow_cfg->flow_list);
···
 		return 0;
 
 	pf->flow_cfg->bmap_to_dmacindex =
-			devm_kzalloc(pf->dev, sizeof(u8) *
+			devm_kzalloc(pf->dev, sizeof(u32) *
 				     pf->flow_cfg->dmacflt_max_flows,
 				     GFP_KERNEL);
 
···
 {
 	struct otx2_nic *pf = netdev_priv(netdev);
 
-	if (!bitmap_empty(&pf->flow_cfg->dmacflt_bmap,
+	if (!bitmap_empty(pf->flow_cfg->dmacflt_bmap,
 			  pf->flow_cfg->dmacflt_max_flows))
 		netdev_warn(netdev,
 			    "Add %pM to CGX/RPM DMAC filters list as well\n",
···
 		return 0;
 
 	if (flow_cfg->nr_flows == flow_cfg->max_flows ||
-	    !bitmap_empty(&flow_cfg->dmacflt_bmap,
+	    !bitmap_empty(flow_cfg->dmacflt_bmap,
 			  flow_cfg->dmacflt_max_flows))
 		return flow_cfg->max_flows + flow_cfg->dmacflt_max_flows;
 	else
···
 
 	otx2_add_flow_to_list(pfvf, pf_mac);
 	pfvf->flow_cfg->nr_flows++;
-	set_bit(0, &pfvf->flow_cfg->dmacflt_bmap);
+	set_bit(0, pfvf->flow_cfg->dmacflt_bmap);
 
 	return 0;
 }
···
 			return otx2_dmacflt_update(pfvf, eth_hdr->h_dest,
 						   flow->entry);
 
-		if (bitmap_full(&flow_cfg->dmacflt_bmap,
+		if (bitmap_full(flow_cfg->dmacflt_bmap,
 				flow_cfg->dmacflt_max_flows)) {
 			netdev_warn(pfvf->netdev,
 				    "Can't insert the rule %d as max allowed dmac filters are %d\n",
···
 		}
 
 		/* Install PF mac address to DMAC filter list */
-		if (!test_bit(0, &flow_cfg->dmacflt_bmap))
+		if (!test_bit(0, flow_cfg->dmacflt_bmap))
 			otx2_add_flow_with_pfmac(pfvf, flow);
 
 		flow->rule_type |= DMAC_FILTER_RULE;
-		flow->entry = find_first_zero_bit(&flow_cfg->dmacflt_bmap,
+		flow->entry = find_first_zero_bit(flow_cfg->dmacflt_bmap,
 						  flow_cfg->dmacflt_max_flows);
 		fsp->location = flow_cfg->max_flows + flow->entry;
 		flow->flow_spec.location = fsp->location;
 		flow->location = fsp->location;
 
-		set_bit(flow->entry, &flow_cfg->dmacflt_bmap);
+		set_bit(flow->entry, flow_cfg->dmacflt_bmap);
 		otx2_dmacflt_add(pfvf, eth_hdr->h_dest, flow->entry);
 
 	} else {
···
 			if (req == DMAC_ADDR_DEL) {
 				otx2_dmacflt_remove(pfvf, eth_hdr->h_dest,
 						    0);
-				clear_bit(0, &pfvf->flow_cfg->dmacflt_bmap);
+				clear_bit(0, pfvf->flow_cfg->dmacflt_bmap);
 				found = true;
 			} else {
 				ether_addr_copy(eth_hdr->h_dest,
 						pfvf->netdev->dev_addr);
+
 				otx2_dmacflt_update(pfvf, eth_hdr->h_dest, 0);
 			}
 			break;
···
 
 		err = otx2_dmacflt_remove(pfvf, eth_hdr->h_dest,
 					  flow->entry);
-		clear_bit(flow->entry, &flow_cfg->dmacflt_bmap);
+		clear_bit(flow->entry, flow_cfg->dmacflt_bmap);
 		/* If all dmac filters are removed delete macfilter with
 		 * interface mac address and configure CGX/RPM block in
 		 * promiscuous mode
 		 */
-		if (bitmap_weight(&flow_cfg->dmacflt_bmap,
+		if (bitmap_weight(flow_cfg->dmacflt_bmap,
 				  flow_cfg->dmacflt_max_flows) == 1)
 			otx2_update_rem_pfmac(pfvf, DMAC_ADDR_DEL);
 	} else {

drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c

···
 	struct msg_req *msg;
 	int err;
 
-	if (enable && !bitmap_empty(&pf->flow_cfg->dmacflt_bmap,
+	if (enable && !bitmap_empty(pf->flow_cfg->dmacflt_bmap,
 				    pf->flow_cfg->dmacflt_max_flows))
 		netdev_warn(pf->netdev,
 			    "CGX/RPM internal loopback might not work as DMAC filters are active\n");