X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fbnxt%2Ftf_ulp%2Fulp_mapper.c;h=6ac4b0f83bdd21ac09e18bffd8b4157c35c30beb;hb=ce836c07e5322bb7967c6de204568a1c143b1391;hp=86858b856f677f9990b7f6d04ba4ecd52d58d7a2;hpb=7936f260953782374d43b46373a04087ac9a5ec1;p=dpdk.git

diff --git a/drivers/net/bnxt/tf_ulp/ulp_mapper.c b/drivers/net/bnxt/tf_ulp/ulp_mapper.c
index 86858b856f..6ac4b0f83b 100644
--- a/drivers/net/bnxt/tf_ulp/ulp_mapper.c
+++ b/drivers/net/bnxt/tf_ulp/ulp_mapper.c
@@ -16,6 +16,7 @@
 #include "ulp_mark_mgr.h"
 #include "ulp_flow_db.h"
 #include "ulp_mapper.h"
+#include "tf_util.h"
 
 static struct bnxt_ulp_glb_resource_info *
 ulp_mapper_glb_resource_info_list_get(uint32_t *num_entries)
@@ -677,6 +678,98 @@ error:
 	return rc;
 }
 
+/*
+ * Process the identifier instruction and extract it from result blob.
+ * Increment the identifier reference count and store it in the flow database.
+ */
+static int32_t
+ulp_mapper_ident_extract(struct bnxt_ulp_mapper_parms *parms,
+			 struct bnxt_ulp_mapper_tbl_info *tbl,
+			 struct bnxt_ulp_mapper_ident_info *ident,
+			 struct ulp_blob *res_blob)
+{
+	struct ulp_flow_db_res_params	fid_parms;
+	uint64_t id = 0;
+	uint32_t idx = 0;
+	struct tf_search_identifier_parms sparms = { 0 };
+	struct tf_free_identifier_parms free_parms = { 0 };
+	struct tf *tfp;
+	int rc;
+
+	/* Get the tfp from ulp context */
+	tfp = bnxt_ulp_cntxt_tfp_get(parms->ulp_ctx);
+	if (!tfp) {
+		BNXT_TF_DBG(ERR, "Failed to get tf pointer\n");
+		return -EINVAL;
+	}
+
+	/* Extract the index from the result blob */
+	rc = ulp_blob_pull(res_blob, (uint8_t *)&idx, sizeof(idx),
+			   ident->ident_bit_pos, ident->ident_bit_size);
+	if (rc) {
+		BNXT_TF_DBG(ERR, "Failed to extract identifier from blob\n");
+		return -EIO;
+	}
+
+	/* populate the search params and search identifier shadow table */
+	sparms.ident_type = ident->ident_type;
+	sparms.dir = tbl->direction;
+	/* convert the idx into cpu format */
+	sparms.search_id = tfp_be_to_cpu_32(idx);
+
+	/* Search identifier also increase the reference count */
+	rc = tf_search_identifier(tfp, &sparms);
+	if (rc) {
+		BNXT_TF_DBG(ERR, "Search ident %s:%x failed.\n",
+			    tf_dir_2_str(sparms.dir),
+			    sparms.search_id);
+		return rc;
+	}
+	BNXT_TF_DBG(INFO, "Search ident %s:%x.success.\n",
+		    tf_dir_2_str(sparms.dir),
+		    sparms.search_id);
+
+	/* Write it to the regfile */
+	id = (uint64_t)tfp_cpu_to_be_64(sparms.search_id);
+	if (!ulp_regfile_write(parms->regfile, ident->regfile_idx, id)) {
+		BNXT_TF_DBG(ERR, "Regfile[%d] write failed.\n", idx);
+		rc = -EINVAL;
+		/* Need to free the identifier, so goto error */
+		goto error;
+	}
+
+	/* Link the resource to the flow in the flow db */
+	memset(&fid_parms, 0, sizeof(fid_parms));
+	fid_parms.direction = tbl->direction;
+	fid_parms.resource_func = ident->resource_func;
+	fid_parms.resource_type = ident->ident_type;
+	fid_parms.resource_hndl = sparms.search_id;
+	fid_parms.critical_resource = BNXT_ULP_CRITICAL_RESOURCE_NO;
+	rc = ulp_flow_db_resource_add(parms->ulp_ctx,
+				      parms->tbl_idx,
+				      parms->fid,
+				      &fid_parms);
+	if (rc) {
+		BNXT_TF_DBG(ERR, "Failed to link res to flow rc = %d\n",
+			    rc);
+		/* Need to free the identifier, so goto error */
+		goto error;
+	}
+
+	return 0;
+
+error:
+	/* Need to free the identifier */
+	free_parms.dir = tbl->direction;
+	free_parms.ident_type = ident->ident_type;
+	free_parms.id = sparms.search_id;
+	(void)tf_free_identifier(tfp, &free_parms);
+	BNXT_TF_DBG(ERR, "Ident extract failed for %s:%s:%x\n",
+		    ident->description,
+		    tf_dir_2_str(tbl->direction), sparms.search_id);
+	return rc;
+}
+
 static int32_t
 ulp_mapper_result_field_process(struct bnxt_ulp_mapper_parms *parms,
 				enum tf_dir dir,
@@ -905,6 +998,41 @@ ulp_mapper_result_field_process(struct bnxt_ulp_mapper_parms *parms,
 			return -EINVAL;
 		}
 		break;
+	case BNXT_ULP_MAPPER_OPC_IF_COMP_FIELD_THEN_CF_ELSE_CF:
+		if (!ulp_operand_read(fld->result_operand,
+				      (uint8_t *)&idx,
+				      sizeof(uint16_t))) {
+			BNXT_TF_DBG(ERR, "%s key operand read failed.\n", name);
+			return -EINVAL;
+		}
+		idx = tfp_be_to_cpu_16(idx);
+		if (idx >= BNXT_ULP_CF_IDX_LAST) {
+			BNXT_TF_DBG(ERR, "%s invalid index %u\n", name, idx);
+			return -EINVAL;
+		}
+		/* check if the computed field is set */
+		if (ULP_COMP_FLD_IDX_RD(parms, idx))
+			val = fld->result_operand_true;
+		else
+			val = fld->result_operand_false;
+
+		/* read the appropriate computed field */
+		if (!ulp_operand_read(val, (uint8_t *)&idx, sizeof(uint16_t))) {
+			BNXT_TF_DBG(ERR, "%s val operand read failed\n", name);
+			return -EINVAL;
+		}
+		idx = tfp_be_to_cpu_16(idx);
+		if (idx >= BNXT_ULP_CF_IDX_LAST) {
+			BNXT_TF_DBG(ERR, "%s invalid index %u\n", name, idx);
+			return -EINVAL;
+		}
+		val = ulp_blob_push_32(blob, &parms->comp_fld[idx],
+				       fld->field_bit_size);
+		if (!val) {
+			BNXT_TF_DBG(ERR, "%s push to key blob failed\n", name);
+			return -EINVAL;
+		}
+		break;
 	default:
 		BNXT_TF_DBG(ERR, "invalid result mapper opcode 0x%x\n",
 			    fld->result_opcode);
@@ -1189,21 +1317,180 @@ ulp_mapper_mark_vfr_idx_process(struct bnxt_ulp_mapper_parms *parms,
 	return rc;
 }
 
+/*
+ * Tcam table - create the result blob.
+ * data [out] - the result blob data
+ */
+static int32_t
+ulp_mapper_tcam_tbl_result_create(struct bnxt_ulp_mapper_parms *parms,
+				  struct bnxt_ulp_mapper_tbl_info *tbl,
+				  struct ulp_blob *data)
+{
+	struct bnxt_ulp_mapper_result_field_info *dflds;
+	uint32_t num_dflds;
+	uint32_t encap_flds = 0;
+	uint32_t i;
+	int32_t rc = 0;
+
+	/* Create the result data blob */
+	dflds = ulp_mapper_result_fields_get(tbl, &num_dflds,
+					     &encap_flds);
+	if (!dflds || !num_dflds || encap_flds) {
+		BNXT_TF_DBG(ERR, "Failed to get data fields.\n");
+		return -EINVAL;
+	}
+
+	for (i = 0; i < num_dflds; i++) {
+		rc = ulp_mapper_result_field_process(parms,
+						     tbl->direction,
+						     &dflds[i],
+						     data,
+						     "TCAM Result");
+		if (rc) {
+			BNXT_TF_DBG(ERR, "Failed to set data fields\n");
+			return -EINVAL;
+		}
+	}
+	return rc;
+}
+
+/* Tcam table scan the identifier list and allocate each identifier */
+static int32_t
+ulp_mapper_tcam_tbl_scan_ident_alloc(struct bnxt_ulp_mapper_parms *parms,
+				     struct bnxt_ulp_mapper_tbl_info *tbl)
+{
+	struct bnxt_ulp_mapper_ident_info *idents;
+	uint32_t num_idents;
+	uint32_t i;
+
+	/*
+	 * Since the cache entry is responsible for allocating
+	 * identifiers when in use, allocate the identifiers only
+	 * during normal processing.
+	 */
+	if (parms->tcam_tbl_opc ==
+	    BNXT_ULP_MAPPER_TCAM_TBL_OPC_NORMAL) {
+		idents = ulp_mapper_ident_fields_get(tbl, &num_idents);
+
+		for (i = 0; i < num_idents; i++) {
+			if (ulp_mapper_ident_process(parms, tbl,
+						     &idents[i], NULL))
+				return -EINVAL;
+		}
+	}
+	return 0;
+}
+
+/*
+ * Tcam table scan the identifier list and extract the identifier from
+ * the result blob.
+ */
+static int32_t
+ulp_mapper_tcam_tbl_scan_ident_extract(struct bnxt_ulp_mapper_parms *parms,
+				       struct bnxt_ulp_mapper_tbl_info *tbl,
+				       struct ulp_blob *data)
+{
+	struct bnxt_ulp_mapper_ident_info *idents;
+	uint32_t num_idents = 0, i;
+	int32_t rc = 0;
+
+	/*
+	 * Extract the listed identifiers from the result field,
+	 * no need to allocate them.
+	 */
+	idents = ulp_mapper_ident_fields_get(tbl, &num_idents);
+	for (i = 0; i < num_idents; i++) {
+		rc = ulp_mapper_ident_extract(parms, tbl, &idents[i], data);
+		if (rc) {
+			BNXT_TF_DBG(ERR, "Error in identifier extraction\n");
+			return rc;
+		}
+	}
+	return rc;
+}
+
+/* Internal function to write the tcam entry */
+static int32_t
+ulp_mapper_tcam_tbl_entry_write(struct bnxt_ulp_mapper_parms *parms,
+				struct bnxt_ulp_mapper_tbl_info *tbl,
+				struct ulp_blob *key,
+				struct ulp_blob *mask,
+				struct ulp_blob *data,
+				uint16_t idx)
+{
+	struct tf_set_tcam_entry_parms sparms = { 0 };
+	struct tf *tfp;
+	uint16_t tmplen;
+	int32_t rc;
+
+	tfp = bnxt_ulp_cntxt_tfp_get(parms->ulp_ctx);
+	if (!tfp) {
+		BNXT_TF_DBG(ERR, "Failed to get truflow pointer\n");
+		return -EINVAL;
+	}
+
+	sparms.dir		= tbl->direction;
+	sparms.tcam_tbl_type	= tbl->resource_type;
+	sparms.idx		= idx;
+	/* Already verified the key/mask lengths */
+	sparms.key		= ulp_blob_data_get(key, &tmplen);
+	sparms.mask		= ulp_blob_data_get(mask, &tmplen);
+	sparms.key_sz_in_bits	= tbl->key_bit_size;
+	sparms.result		= ulp_blob_data_get(data, &tmplen);
+
+	if (tbl->result_bit_size != tmplen) {
+		BNXT_TF_DBG(ERR, "Result len (%d) != Expected (%d)\n",
+			    tmplen, tbl->result_bit_size);
+		return -EINVAL;
+	}
+	sparms.result_sz_in_bits = tbl->result_bit_size;
+	if (tf_set_tcam_entry(tfp, &sparms)) {
+		BNXT_TF_DBG(ERR, "tcam[%s][%s][%x] write failed.\n",
+			    tf_tcam_tbl_2_str(sparms.tcam_tbl_type),
+			    tf_dir_2_str(sparms.dir), sparms.idx);
+		return -EIO;
+	}
+	BNXT_TF_DBG(INFO, "tcam[%s][%s][%x] write success.\n",
+		    tf_tcam_tbl_2_str(sparms.tcam_tbl_type),
+		    tf_dir_2_str(sparms.dir), sparms.idx);
+
+	/* Update cache with TCAM index if the was cache allocated. */
+	if (parms->tcam_tbl_opc ==
+	    BNXT_ULP_MAPPER_TCAM_TBL_OPC_CACHE_ALLOC) {
+		if (!parms->cache_ptr) {
+			BNXT_TF_DBG(ERR, "Unable to update cache");
+			return -EINVAL;
+		}
+		parms->cache_ptr->tcam_idx = idx;
+	}
+
+	/* Mark action */
+	rc = ulp_mapper_mark_act_ptr_process(parms, tbl);
+	if (rc) {
+		BNXT_TF_DBG(ERR, "failed mark action processing\n");
+		return rc;
+	}
+
+	return rc;
+}
+
 static int32_t
 ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms,
 			    struct bnxt_ulp_mapper_tbl_info *tbl)
 {
 	struct bnxt_ulp_mapper_class_key_field_info	*kflds;
-	struct ulp_blob key, mask, data;
+	struct ulp_blob key, mask, data, update_data;
 	uint32_t i, num_kflds;
 	struct tf *tfp;
 	int32_t rc, trc;
 	struct tf_alloc_tcam_entry_parms aparms		= { 0 };
-	struct tf_set_tcam_entry_parms sparms		= { 0 };
+	struct tf_search_tcam_entry_parms searchparms   = { 0 };
 	struct ulp_flow_db_res_params	fid_parms	= { 0 };
 	struct tf_free_tcam_entry_parms free_parms	= { 0 };
+	enum bnxt_ulp_search_before_alloc search_flag;
 	uint32_t hit = 0;
 	uint16_t tmplen = 0;
+	uint16_t idx;
 
 	/* Skip this if was handled by the cache. */
 	if (parms->tcam_tbl_opc == BNXT_ULP_MAPPER_TCAM_TBL_OPC_CACHE_SKIP) {
@@ -1228,6 +1515,8 @@ ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms,
 	    !ulp_blob_init(&mask, tbl->key_bit_size,
 			   parms->device_params->byte_order) ||
 	    !ulp_blob_init(&data, tbl->result_bit_size,
+			   parms->device_params->byte_order) ||
+	    !ulp_blob_init(&update_data, tbl->result_bit_size,
 			   parms->device_params->byte_order)) {
 		BNXT_TF_DBG(ERR, "blob inits failed.\n");
 		return -EINVAL;
@@ -1258,131 +1547,116 @@ ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms,
 		}
 	}
 
-	aparms.dir		= tbl->direction;
-	aparms.tcam_tbl_type	= tbl->resource_type;
-	aparms.search_enable	= tbl->srch_b4_alloc;
-	aparms.key_sz_in_bits	= tbl->key_bit_size;
-	aparms.key		= ulp_blob_data_get(&key, &tmplen);
-	if (tbl->key_bit_size != tmplen) {
-		BNXT_TF_DBG(ERR, "Key len (%d) != Expected (%d)\n",
-			    tmplen, tbl->key_bit_size);
-		return -EINVAL;
-	}
-
-	aparms.mask		= ulp_blob_data_get(&mask, &tmplen);
-	if (tbl->key_bit_size != tmplen) {
-		BNXT_TF_DBG(ERR, "Mask len (%d) != Expected (%d)\n",
-			    tmplen, tbl->key_bit_size);
-		return -EINVAL;
-	}
-
-	aparms.priority		= tbl->priority;
-
-	/*
-	 * All failures after this succeeds require the entry to be freed.
-	 * cannot return directly on failure, but needs to goto error
-	 */
-	rc = tf_alloc_tcam_entry(tfp, &aparms);
-	if (rc) {
-		BNXT_TF_DBG(ERR, "tcam alloc failed rc=%d.\n", rc);
-		return rc;
-	}
-
-	hit = aparms.hit;
-
-	/* Build the result */
-	if (!tbl->srch_b4_alloc || !hit) {
-		struct bnxt_ulp_mapper_result_field_info *dflds;
-		struct bnxt_ulp_mapper_ident_info *idents;
-		uint32_t num_dflds, num_idents;
-		uint32_t encap_flds = 0;
-
+	if (tbl->srch_b4_alloc == BNXT_ULP_SEARCH_BEFORE_ALLOC_NO) {
 		/*
-		 * Since the cache entry is responsible for allocating
-		 * identifiers when in use, allocate the identifiers only
-		 * during normal processing.
+		 * No search for re-use is requested, so simply allocate the
+		 * tcam index.
 		 */
-		if (parms->tcam_tbl_opc ==
-		    BNXT_ULP_MAPPER_TCAM_TBL_OPC_NORMAL) {
-			idents = ulp_mapper_ident_fields_get(tbl, &num_idents);
-
-			for (i = 0; i < num_idents; i++) {
-				rc = ulp_mapper_ident_process(parms, tbl,
-							      &idents[i], NULL);
-				/* Already logged the error, just return */
-				if (rc)
-					goto error;
-			}
-		}
-
-		/* Create the result data blob */
-		dflds = ulp_mapper_result_fields_get(tbl, &num_dflds,
-						     &encap_flds);
-		if (!dflds || !num_dflds || encap_flds) {
-			BNXT_TF_DBG(ERR, "Failed to get data fields.\n");
-			rc = -EINVAL;
-			goto error;
+		aparms.dir		= tbl->direction;
+		aparms.tcam_tbl_type	= tbl->resource_type;
+		aparms.search_enable	= tbl->srch_b4_alloc;
+		aparms.key_sz_in_bits	= tbl->key_bit_size;
+		aparms.key		= ulp_blob_data_get(&key, &tmplen);
+		if (tbl->key_bit_size != tmplen) {
+			BNXT_TF_DBG(ERR, "Key len (%d) != Expected (%d)\n",
+				    tmplen, tbl->key_bit_size);
+			return -EINVAL;
 		}
 
-		for (i = 0; i < num_dflds; i++) {
-			rc = ulp_mapper_result_field_process(parms,
-							     tbl->direction,
-							     &dflds[i],
-							     &data,
-							     "TCAM Result");
-			if (rc) {
-				BNXT_TF_DBG(ERR, "Failed to set data fields\n");
-				goto error;
-			}
+		aparms.mask		= ulp_blob_data_get(&mask, &tmplen);
+		if (tbl->key_bit_size != tmplen) {
+			BNXT_TF_DBG(ERR, "Mask len (%d) != Expected (%d)\n",
+				    tmplen, tbl->key_bit_size);
+			return -EINVAL;
 		}
 
-		sparms.dir		= aparms.dir;
-		sparms.tcam_tbl_type	= aparms.tcam_tbl_type;
-		sparms.idx		= aparms.idx;
-		/* Already verified the key/mask lengths */
-		sparms.key		= ulp_blob_data_get(&key, &tmplen);
-		sparms.mask		= ulp_blob_data_get(&mask, &tmplen);
-		sparms.key_sz_in_bits	= tbl->key_bit_size;
-		sparms.result		= ulp_blob_data_get(&data, &tmplen);
+		aparms.priority		= tbl->priority;
 
-		if (tbl->result_bit_size != tmplen) {
-			BNXT_TF_DBG(ERR, "Result len (%d) != Expected (%d)\n",
-				    tmplen, tbl->result_bit_size);
-			rc = -EINVAL;
-			goto error;
+		/*
+		 * All failures after this succeeds require the entry to be
+		 * freed. cannot return directly on failure, but needs to goto
+		 * error.
+		 */
+		rc = tf_alloc_tcam_entry(tfp, &aparms);
+		if (rc) {
+			BNXT_TF_DBG(ERR, "tcam alloc failed rc=%d.\n", rc);
+			return rc;
 		}
-		sparms.result_sz_in_bits = tbl->result_bit_size;
-
-		rc = tf_set_tcam_entry(tfp, &sparms);
+		idx = aparms.idx;
+		hit = aparms.hit;
+	} else {
+		/*
+		 * Searching before allocation to see if we already have an
+		 * entry.  This allows re-use of a constrained resource.
+		 */
+		searchparms.dir = tbl->direction;
+		searchparms.tcam_tbl_type = tbl->resource_type;
+		searchparms.key = ulp_blob_data_get(&key, &tmplen);
+		searchparms.key_sz_in_bits = tbl->key_bit_size;
+		searchparms.mask = ulp_blob_data_get(&mask, &tmplen);
+		searchparms.priority = tbl->priority;
+		searchparms.alloc = 1;
+		searchparms.result = ulp_blob_data_get(&data, &tmplen);
+		searchparms.result_sz_in_bits = tbl->result_bit_size;
+
+		rc = tf_search_tcam_entry(tfp, &searchparms);
 		if (rc) {
-			BNXT_TF_DBG(ERR, "tcam[%d][%s][%d] write failed.\n",
-				    sparms.tcam_tbl_type,
-				    (sparms.dir == TF_DIR_RX) ? "RX" : "TX",
-				    sparms.idx);
-			goto error;
+			BNXT_TF_DBG(ERR, "tcam search failed rc=%d\n", rc);
+			return rc;
 		}
 
-		/* Update cache with TCAM index if the was cache allocated. */
-		if (parms->tcam_tbl_opc ==
-		    BNXT_ULP_MAPPER_TCAM_TBL_OPC_CACHE_ALLOC) {
-			if (!parms->cache_ptr) {
-				BNXT_TF_DBG(ERR, "Unable to update cache");
-				rc = -EINVAL;
-				goto error;
-			}
-			parms->cache_ptr->tcam_idx = aparms.idx;
+		/* Successful search, check the result */
+		if (searchparms.search_status == REJECT) {
+			BNXT_TF_DBG(ERR, "tcam alloc rejected\n");
+			return -ENOMEM;
 		}
+		idx = searchparms.idx;
+		hit = searchparms.hit;
+	}
 
-		/* Mark action */
-		rc = ulp_mapper_mark_act_ptr_process(parms, tbl);
-		if (rc)
-			goto error;
-
-	} else {
-		BNXT_TF_DBG(ERR, "Not supporting search before alloc now\n");
-		rc = -EINVAL;
-		goto error;
+	/* if it is miss then it is same as no search before alloc */
+	if (!hit)
+		search_flag = BNXT_ULP_SEARCH_BEFORE_ALLOC_NO;
+	else
+		search_flag = tbl->srch_b4_alloc;
+
+	switch (search_flag) {
+	case BNXT_ULP_SEARCH_BEFORE_ALLOC_NO:
+		/*Scan identifier list, allocate identifier and update regfile*/
+		rc = ulp_mapper_tcam_tbl_scan_ident_alloc(parms, tbl);
+		/* Create the result blob */
+		if (!rc)
+			rc = ulp_mapper_tcam_tbl_result_create(parms, tbl,
+							       &data);
+		/* write the tcam entry */
+		if (!rc)
+			rc = ulp_mapper_tcam_tbl_entry_write(parms, tbl, &key,
+							     &mask, &data, idx);
+		break;
+	case BNXT_ULP_SEARCH_BEFORE_ALLOC_SEARCH_IF_HIT_SKIP:
+		/*Scan identifier list, extract identifier and update regfile*/
+		rc = ulp_mapper_tcam_tbl_scan_ident_extract(parms, tbl, &data);
+		break;
+	case BNXT_ULP_SEARCH_BEFORE_ALLOC_SEARCH_IF_HIT_UPDATE:
+		/*Scan identifier list, extract identifier and update regfile*/
+		rc = ulp_mapper_tcam_tbl_scan_ident_extract(parms, tbl, &data);
+		/* Create the result blob */
+		if (!rc)
+			rc = ulp_mapper_tcam_tbl_result_create(parms, tbl,
+							       &update_data);
+		/* Update/overwrite the tcam entry */
+		if (!rc)
+			rc = ulp_mapper_tcam_tbl_entry_write(parms, tbl, &key,
+							     &mask,
+							     &update_data, idx);
+		break;
+	default:
+		BNXT_TF_DBG(ERR, "invalid search opcode\n");
+		rc =  -EINVAL;
+		break;
 	}
+	if (rc)
+		goto error;
 
 	/*
 	 * Only link the entry to the flow db in the event that cache was not
@@ -1393,7 +1667,7 @@ ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms,
 		fid_parms.resource_func	= tbl->resource_func;
 		fid_parms.resource_type	= tbl->resource_type;
 		fid_parms.critical_resource = tbl->critical_resource;
-		fid_parms.resource_hndl	= aparms.idx;
+		fid_parms.resource_hndl	= idx;
 		rc = ulp_flow_db_resource_add(parms->ulp_ctx,
 					      parms->tbl_idx,
 					      parms->fid,
@@ -1419,11 +1693,11 @@ error:
 	parms->tcam_tbl_opc = BNXT_ULP_MAPPER_TCAM_TBL_OPC_NORMAL;
 	free_parms.dir			= tbl->direction;
 	free_parms.tcam_tbl_type	= tbl->resource_type;
-	free_parms.idx			= aparms.idx;
+	free_parms.idx			= idx;
 	trc = tf_free_tcam_entry(tfp, &free_parms);
 	if (trc)
 		BNXT_TF_DBG(ERR, "Failed to free tcam[%d][%d][%d] on failure\n",
-			    tbl->resource_type, tbl->direction, aparms.idx);
+			    tbl->resource_type, tbl->direction, idx);
 
 	return rc;
 }
@@ -1585,9 +1859,10 @@ ulp_mapper_index_tbl_process(struct bnxt_ulp_mapper_parms *parms,
 	struct ulp_blob	data;
 	uint64_t idx = 0;
 	uint16_t tmplen;
-	uint32_t i, num_flds;
+	uint32_t i, num_flds, index, hit;
 	int32_t rc = 0, trc = 0;
 	struct tf_alloc_tbl_entry_parms	aparms = { 0 };
+	struct tf_search_tbl_entry_parms srchparms = { 0 };
 	struct tf_set_tbl_entry_parms	sparms = { 0 };
 	struct tf_free_tbl_entry_parms	free_parms = { 0 };
 	uint32_t tbl_scope_id;
@@ -1689,33 +1964,59 @@ ulp_mapper_index_tbl_process(struct bnxt_ulp_mapper_parms *parms,
 		return 0; /* success */
 	}
 
+	index = 0;
+	hit = 0;
 	/* Perform the tf table allocation by filling the alloc params */
-	aparms.dir		= tbl->direction;
-	aparms.type		= tbl->resource_type;
-	aparms.search_enable	= tbl->srch_b4_alloc;
-	aparms.result		= ulp_blob_data_get(&data, &tmplen);
-	aparms.result_sz_in_bytes = ULP_BITS_2_BYTE(tmplen);
-	aparms.tbl_scope_id	= tbl_scope_id;
-
-	/* All failures after the alloc succeeds require a free */
-	rc = tf_alloc_tbl_entry(tfp, &aparms);
-	if (rc) {
-		BNXT_TF_DBG(ERR, "Alloc table[%d][%s] failed rc=%d\n",
-			    aparms.type,
-			    (aparms.dir == TF_DIR_RX) ? "RX" : "TX",
-			    rc);
-		return rc;
+	if (tbl->srch_b4_alloc) {
+		memset(&srchparms, 0, sizeof(srchparms));
+		srchparms.dir = tbl->direction;
+		srchparms.type = tbl->resource_type;
+		srchparms.alloc	= 1;
+		srchparms.result = ulp_blob_data_get(&data, &tmplen);
+		srchparms.result_sz_in_bytes = ULP_BITS_2_BYTE(tmplen);
+		srchparms.tbl_scope_id = tbl_scope_id;
+		rc = tf_search_tbl_entry(tfp, &srchparms);
+		if (rc) {
+			BNXT_TF_DBG(ERR, "Alloc table[%s][%s] failed rc=%d\n",
+				    tf_tbl_type_2_str(tbl->resource_type),
+				    tf_dir_2_str(tbl->direction), rc);
+			return rc;
+		}
+		if (srchparms.search_status == REJECT) {
+			BNXT_TF_DBG(ERR, "Alloc table[%s][%s] rejected.\n",
+				    tf_tbl_type_2_str(tbl->resource_type),
+				    tf_dir_2_str(tbl->direction));
+			return -ENOMEM;
+		}
+		index = srchparms.idx;
+		hit = srchparms.hit;
+	} else {
+		aparms.dir		= tbl->direction;
+		aparms.type		= tbl->resource_type;
+		aparms.search_enable	= tbl->srch_b4_alloc;
+		aparms.result		= ulp_blob_data_get(&data, &tmplen);
+		aparms.result_sz_in_bytes = ULP_BITS_2_BYTE(tmplen);
+		aparms.tbl_scope_id	= tbl_scope_id;
+
+		/* All failures after the alloc succeeds require a free */
+		rc = tf_alloc_tbl_entry(tfp, &aparms);
+		if (rc) {
+			BNXT_TF_DBG(ERR, "Alloc table[%s][%s] failed rc=%d\n",
+				    tf_tbl_type_2_str(tbl->resource_type),
+				    tf_dir_2_str(tbl->direction), rc);
+			return rc;
+		}
+		index = aparms.idx;
 	}
-
 	/*
 	 * calculate the idx for the result record, for external EM the offset
 	 * needs to be shifted accordingly. If external non-inline table types
 	 * are used then need to revisit this logic.
 	 */
-	if (aparms.type == TF_TBL_TYPE_EXT)
-		idx = TF_ACT_REC_OFFSET_2_PTR(aparms.idx);
+	if (tbl->resource_type == TF_TBL_TYPE_EXT)
+		idx = TF_ACT_REC_OFFSET_2_PTR(index);
 	else
-		idx = aparms.idx;
+		idx = index;
 
 	/* Always storing values in Regfile in BE */
 	idx = tfp_cpu_to_be_64(idx);
@@ -1729,12 +2030,12 @@ ulp_mapper_index_tbl_process(struct bnxt_ulp_mapper_parms *parms,
 	}
 
 	/* Perform the tf table set by filling the set params */
-	if (!tbl->srch_b4_alloc || !aparms.hit) {
+	if (!tbl->srch_b4_alloc || !hit) {
 		sparms.dir		= tbl->direction;
 		sparms.type		= tbl->resource_type;
 		sparms.data		= ulp_blob_data_get(&data, &tmplen);
 		sparms.data_sz_in_bytes = ULP_BITS_2_BYTE(tmplen);
-		sparms.idx		= aparms.idx;
+		sparms.idx		= index;
 		sparms.tbl_scope_id	= tbl_scope_id;
 
 		rc = tf_set_tbl_entry(tfp, &sparms);
@@ -1754,7 +2055,7 @@ ulp_mapper_index_tbl_process(struct bnxt_ulp_mapper_parms *parms,
 	fid_parms.resource_func	= tbl->resource_func;
 	fid_parms.resource_type	= tbl->resource_type;
 	fid_parms.resource_sub_type = tbl->resource_sub_type;
-	fid_parms.resource_hndl	= aparms.idx;
+	fid_parms.resource_hndl	= index;
 	fid_parms.critical_resource = BNXT_ULP_CRITICAL_RESOURCE_NO;
 
 	rc = ulp_flow_db_resource_add(parms->ulp_ctx,
@@ -1781,7 +2082,7 @@ error:
 	 */
 	free_parms.dir	= tbl->direction;
 	free_parms.type	= tbl->resource_type;
-	free_parms.idx	= aparms.idx;
+	free_parms.idx	= index;
 	free_parms.tbl_scope_id = tbl_scope_id;
 
 	trc = tf_free_tbl_entry(tfp, &free_parms);