Merge branch 'octeontx2-exact-match-table'

Ratheesh Kannoth says:

====================
octeontx2: Exact Match Table.

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

Link: https://lore.kernel.org/r/20220708044151.2972645-1-rkannoth@marvell.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -11,4 +11,4 @@ rvu_mbox-y := mbox.o rvu_trace.o
 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

@@ -169,9 +169,10 @@ M(CGX_GET_PHY_FEC_STATS, 0x219, cgx_get_phy_fec_stats, msg_req, msg_rsp) \
 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) */				\
@@ -241,6 +242,9 @@ M(NPC_MCAM_READ_BASE_RULE, 0x6011, npc_read_base_steer_rule,            \
 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)	\
@@ -428,6 +432,7 @@ struct get_hw_cap_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 */
@@ -451,6 +456,7 @@ struct cgx_fec_stats_rsp {
 struct cgx_mac_addr_set_or_get {
 	struct mbox_msghdr hdr;
 	u8 mac_addr[ETH_ALEN];
+	u32 index;
 };
 
 /* Structure for requesting the operation to
@@ -466,7 +472,7 @@ struct cgx_mac_addr_add_req {
  */
 struct cgx_mac_addr_add_rsp {
 	struct mbox_msghdr hdr;
-	u8 index;
+	u32 index;
 };
 
 /* Structure for requesting the operation to
@@ -474,7 +480,7 @@ struct cgx_mac_addr_add_rsp {
  */
 struct cgx_mac_addr_del_req {
 	struct mbox_msghdr hdr;
-	u8 index;
+	u32 index;
 };
 
 /* Structure for response against the operation to
@@ -482,7 +488,7 @@ struct cgx_mac_addr_del_req {
  */
 struct cgx_max_dmac_entries_get_rsp {
 	struct mbox_msghdr hdr;
-	u8 max_dmac_filters;
+	u32 max_dmac_filters;
 };
 
 struct cgx_link_user_info {
@@ -583,10 +589,20 @@ struct cgx_set_link_mode_rsp {
 	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 */
@@ -1440,6 +1456,16 @@ struct npc_mcam_get_stats_rsp {
 	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,
@@ -1622,6 +1648,9 @@ enum cgx_af_status {
 	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

@@ -10,6 +10,14 @@
 
 #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,
@@ -200,6 +208,7 @@ enum key_fields {
 	NPC_ERRLEV,
 	NPC_ERRCODE,
 	NPC_LXMB,
+	NPC_EXACT_RESULT,
 	NPC_LA,
 	NPC_LB,
 	NPC_LC,
@@ -380,6 +389,22 @@ struct nix_rx_action {
 #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

@@ -155,7 +155,7 @@
 
 /* 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 | \
@@ -15123,7 +15123,8 @@ static struct npc_mcam_kex npc_mkex_default = {
 	.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

@@ -18,6 +18,7 @@
 #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"
@@ -68,6 +69,8 @@ static void rvu_setup_hw_capabilities(struct rvu *rvu)
 	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)) {
@@ -85,6 +88,9 @@ static void rvu_setup_hw_capabilities(struct rvu *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'
@@ -1122,6 +1128,12 @@ static int rvu_setup_hw_resources(struct rvu *rvu)
 		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);
 
@@ -1991,6 +2003,7 @@ int rvu_mbox_handler_get_hw_cap(struct rvu *rvu, struct msg_req *req,
 
 	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;
 }
@@ -2548,6 +2561,9 @@ static void rvu_blklf_teardown(struct rvu *rvu, u16 pcifunc, u8 blkaddr)
 
 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

@@ -338,6 +338,8 @@ struct hw_cap {
 	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 {
@@ -369,6 +371,7 @@ struct rvu_hwinfo {
 	struct rvu	 *rvu;
 	struct npc_pkind pkind;
 	struct npc_mcam  mcam;
+	struct npc_exact_table *table;
 };
 
 struct mbox_wq_info {
@@ -419,6 +422,7 @@ struct npc_kpu_profile_adapter {
 	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;
@@ -575,6 +579,17 @@ static inline bool is_rvu_otx2(struct rvu *rvu)
 		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,
 				   u8 lmacid, u8 chan)
 {
@@ -754,7 +769,6 @@ u32 convert_dwrr_mtu_to_bytes(u8 dwrr_mtu);
 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);
@@ -773,14 +787,17 @@ void rvu_npc_install_allmulti_entry(struct rvu *rvu, u16 pcifunc, int nixlf,
 				    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);
@@ -815,6 +832,11 @@ int npc_get_nixlf_mcam_index(struct npc_mcam *mcam, u16 pcifunc, int nixlf,
 			     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

@@ -14,6 +14,7 @@
 #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;
@@ -474,6 +475,11 @@ void rvu_cgx_disable_dmac_entries(struct rvu *rvu, u16 pcifunc)
 	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);
@@ -584,6 +590,9 @@ int rvu_mbox_handler_cgx_mac_addr_set(struct rvu *rvu,
 	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);
@@ -602,6 +611,9 @@ int rvu_mbox_handler_cgx_mac_addr_add(struct rvu *rvu,
 	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 (rc >= 0) {
@@ -622,6 +634,9 @@ int rvu_mbox_handler_cgx_mac_addr_del(struct rvu *rvu,
 	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);
 }
@@ -643,6 +658,11 @@ int rvu_mbox_handler_cgx_mac_max_entries_get(struct rvu *rvu,
 		return 0;
 	}
 
+	if (rvu_npc_exact_has_match_table(rvu)) {
+		rsp->max_dmac_filters = rvu_npc_exact_get_max_entries(rvu);
+		return 0;
+	}
+
 	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
 	rsp->max_dmac_filters = cgx_lmac_addr_max_entries_get(cgx_id, lmac_id);
 	return 0;
@@ -680,6 +700,10 @@ int rvu_mbox_handler_cgx_promisc_enable(struct rvu *rvu, struct msg_req *req,
 	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);
@@ -695,6 +719,10 @@ int rvu_mbox_handler_cgx_promisc_disable(struct rvu *rvu, struct msg_req *req,
 	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);
 
 	cgx_lmac_promisc_config(cgx_id, lmac_id, false);
@@ -1088,7 +1116,7 @@ int rvu_mbox_handler_cgx_set_link_mode(struct rvu *rvu,
 	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);
@@ -1098,12 +1126,16 @@ int rvu_mbox_handler_cgx_mac_addr_reset(struct rvu *rvu, struct msg_req *req,
 		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;
@@ -1111,6 +1143,9 @@ int rvu_mbox_handler_cgx_mac_addr_update(struct rvu *rvu,
 	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

@@ -18,6 +18,7 @@
 #include "cgx.h"
 #include "lmac_common.h"
 #include "npc.h"
+#include "rvu_npc_hash.h"
 
 #define DEBUGFS_DIR_NAME "octeontx2"
 
@@ -2600,6 +2601,170 @@ static int rvu_dbg_npc_mcam_show_rules(struct seq_file *s, void *unused)
 
 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);
@@ -2608,8 +2773,22 @@ static void rvu_dbg_npc_init(struct rvu *rvu)
 			    &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

@@ -10,6 +10,7 @@
 #include "rvu.h"
 #include "rvu_reg.h"
 #include "rvu_struct.h"
+#include "rvu_npc_hash.h"
 
 #define DRV_NAME "octeontx2-af"
 
@@ -1436,14 +1437,75 @@ static int rvu_af_dl_dwrr_mtu_get(struct devlink *devlink, u32 id,
 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,
 			     "dwrr_mtu", DEVLINK_PARAM_TYPE_U32,
 			     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 */
@@ -1501,6 +1563,7 @@ int rvu_register_dl(struct rvu *rvu)
 {
 	struct rvu_devlink *rvu_dl;
 	struct devlink *dl;
+	size_t size;
 	int err;
 
 	dl = devlink_alloc(&rvu_devlink_ops, sizeof(struct rvu_devlink),
@@ -1522,8 +1585,12 @@ int rvu_register_dl(struct rvu *rvu)
 		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

@@ -14,6 +14,7 @@
 #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,
@@ -3792,9 +3793,15 @@ int rvu_mbox_handler_nix_set_rx_mode(struct rvu *rvu, struct nix_rx_mode *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

@@ -15,6 +15,7 @@
 #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 */
@@ -1105,6 +1106,34 @@ void rvu_npc_disable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf)
 				     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
@@ -1181,14 +1210,6 @@ void rvu_npc_free_mcam_entries(struct rvu *rvu, u16 pcifunc, int nixlf)
 	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)
 {
@@ -1262,6 +1283,9 @@ static void npc_program_mkex_profile(struct rvu *rvu, int blkaddr,
 		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,
@@ -1463,6 +1487,7 @@ static int npc_prepare_default_kpu(struct npc_kpu_profile_adapter *profile)
 	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;
 }
@@ -1819,7 +1844,6 @@ static int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr)
 	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.
 	 */
@@ -2047,6 +2071,7 @@ int rvu_npc_init(struct rvu *rvu)
 
 	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);
 
@@ -2562,6 +2587,14 @@ static int npc_mcam_alloc_entries(struct npc_mcam *mcam, u16 pcifunc,
 	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,
 					  struct npc_mcam_alloc_entry_req *req,
 					  struct npc_mcam_alloc_entry_rsp *rsp)

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

@@ -10,6 +10,8 @@
 #include "rvu_reg.h"
 #include "rvu.h"
 #include "npc.h"
+#include "rvu_npc_fs.h"
+#include "rvu_npc_hash.h"
 
 #define NPC_BYTESM		GENMASK_ULL(19, 16)
 #define NPC_HDR_OFFSET		GENMASK_ULL(15, 8)
@@ -227,6 +229,25 @@ static bool npc_check_field(struct rvu *rvu, int blkaddr, enum key_fields type,
 	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)
 {
@@ -276,6 +297,7 @@ static void npc_scan_parse_result(struct npc_mcam *mcam, u8 bit_number,
 	default:
 		return;
 	}
+
 	npc_set_kw_masks(mcam, type, nr_bits, kwi, offset, intf);
 }
 
@@ -509,8 +531,8 @@ static int npc_scan_kex(struct rvu *rvu, int blkaddr, u8 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
@@ -518,12 +540,24 @@ static int npc_scan_kex(struct rvu *rvu, int blkaddr, u8 intf)
 	 * 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++;
+	}
+
 	/* Scan and note how layer data is going to be in key */
 	for (lid = 0; lid < NPC_MAX_LID; lid++) {
 		for (lt = 0; lt < NPC_MAX_LT; lt++) {
@@ -624,9 +658,9 @@ static int npc_check_unsupported_flows(struct rvu *rvu, u64 features, u8 intf)
  * 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} };
@@ -705,8 +739,6 @@ static void npc_update_entry(struct rvu *rvu, enum key_fields type,
 	}
 }
 
-#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,
@@ -779,7 +811,8 @@ static void npc_update_vlan_features(struct rvu *rvu, struct mcam_entry *entry,
 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);
@@ -828,6 +861,7 @@ do {									      \
 } 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);
@@ -854,10 +888,12 @@ do {									      \
 
 	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;
 
@@ -1023,8 +1059,9 @@ static int npc_install_flow(struct rvu *rvu, int blkaddr, u16 target,
 	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;
@@ -1032,7 +1069,7 @@ static int npc_install_flow(struct rvu *rvu, int blkaddr, u16 target,
 	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);
@@ -1057,7 +1094,8 @@ static int npc_install_flow(struct rvu *rvu, int blkaddr, u16 target,
 			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;
 	}
 
@@ -1424,3 +1462,98 @@ void npc_mcam_disable_flows(struct rvu *rvu, u16 target)
 	}
 	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.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

@@ -565,7 +565,13 @@
 #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)
@@ -599,6 +605,15 @@
 #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

@@ -314,8 +314,8 @@ struct otx2_flow_config {
 #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;
 };
 
@@ -895,9 +895,9 @@ int otx2_setup_tc(struct net_device *netdev, enum tc_setup_type type,
 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

@@ -8,7 +8,7 @@
 #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;
@@ -35,9 +35,10 @@ static int otx2_dmacflt_do_add(struct otx2_nic *pf, const u8 *mac,
 	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);
@@ -48,16 +49,24 @@ static int otx2_dmacflt_add_pfmac(struct otx2_nic *pf)
 		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
@@ -65,13 +74,13 @@ int otx2_dmacflt_add(struct otx2_nic *pf, const u8 *mac, u8 bit_pos)
 	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;
@@ -91,9 +100,9 @@ static int otx2_dmacflt_do_remove(struct otx2_nic *pfvf, const u8 *mac,
 	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);
@@ -102,6 +111,7 @@ static int otx2_dmacflt_remove_pfmac(struct otx2_nic *pf)
 		mutex_unlock(&pf->mbox.lock);
 		return -ENOMEM;
 	}
+	req->index = dmac_index;
 
 	err = otx2_sync_mbox_msg(&pf->mbox);
 
@@ -110,12 +120,12 @@ static int otx2_dmacflt_remove_pfmac(struct otx2_nic *pf)
 }
 
 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);
 }
@@ -151,9 +161,10 @@ int otx2_dmacflt_get_max_cnt(struct otx2_nic *pf)
 	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);
@@ -167,8 +178,19 @@ int otx2_dmacflt_update(struct otx2_nic *pf, u8 *mac, u8 bit_pos)
 
 	ether_addr_copy(req->mac_addr, mac);
 	req->index = pf->flow_cfg->bmap_to_dmacindex[bit_pos];
+
+	/* 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

@@ -18,7 +18,7 @@ struct otx2_flow {
 	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)
@@ -232,6 +232,9 @@ static int otx2_mcam_entry_init(struct otx2_nic *pfvf)
 	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;
@@ -242,6 +245,12 @@ int otx2vf_mcam_flow_init(struct otx2_nic *pfvf)
 	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;
 	INIT_LIST_HEAD(&flow_cfg->flow_list);
 	flow_cfg->max_flows = 0;
@@ -259,6 +268,12 @@ int otx2_mcam_flow_init(struct otx2_nic *pf)
 	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);
 
 	/* Allocate bare minimum number of MCAM entries needed for
@@ -284,7 +299,7 @@ int otx2_mcam_flow_init(struct otx2_nic *pf)
 		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);
 
@@ -355,7 +370,7 @@ int otx2_add_macfilter(struct net_device *netdev, const u8 *mac)
 {
 	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",
@@ -438,7 +453,7 @@ int otx2_get_maxflows(struct otx2_flow_config *flow_cfg)
 		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
@@ -1010,7 +1025,7 @@ static int otx2_add_flow_with_pfmac(struct otx2_nic *pfvf,
 
 	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;
 }
@@ -1064,7 +1079,7 @@ int otx2_add_flow(struct otx2_nic *pfvf, struct ethtool_rxnfc *nfc)
 			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",
@@ -1078,17 +1093,17 @@ int otx2_add_flow(struct otx2_nic *pfvf, struct ethtool_rxnfc *nfc)
 		}
 
 		/* 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 {
@@ -1154,11 +1169,12 @@ static void otx2_update_rem_pfmac(struct otx2_nic *pfvf, int req)
 			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;
@@ -1194,12 +1210,12 @@ int otx2_remove_flow(struct otx2_nic *pfvf, u32 location)
 
 		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

@@ -1120,7 +1120,7 @@ static int otx2_cgx_config_loopback(struct otx2_nic *pf, bool enable)
 	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");