net/bnxt: add flow database resource iteration API

This API can be used to iterate individual resource
functions in the flow database.

Reviewed-by: Mike Baucom <michael.baucom@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Kishore Padmanabha <kishore.padmanabha@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>

diff --git a/drivers/net/bnxt/tf_ulp/ulp_flow_db.c b/drivers/net/bnxt/tf_ulp/ulp_flow_db.c
index e99e94a..9e7f9f5 100644 (file)
--- a/drivers/net/bnxt/tf_ulp/ulp_flow_db.c
+++ b/drivers/net/bnxt/tf_ulp/ulp_flow_db.c
@@ -560,7 +560,71 @@ int32_t    ulp_flow_db_fid_free(struct bnxt_ulp_context            *ulp_ctxt,
        return 0;
 }
 
-/** Get the flow database entry iteratively
+/*
+ * Get the flow database entry details
+ *
+ * ulp_ctxt [in] Ptr to ulp_context
+ * tbl_idx [in] Specify it is regular or default flow
+ * fid [in] The index to the flow entry
+ * nxt_idx [in/out] the index to the next entry
+ * params [out] The contents to be copied into params.
+ *
+ * returns 0 on success and negative on failure.
+ */
+int32_t        ulp_flow_db_resource_get(struct bnxt_ulp_context        *ulp_ctxt,
+                                enum bnxt_ulp_flow_db_tables   tbl_idx,
+                                uint32_t                       fid,
+                                uint32_t                       *nxt_idx,
+                                struct ulp_flow_db_res_params  *params)
+{
+       struct bnxt_ulp_flow_db         *flow_db;
+       struct bnxt_ulp_flow_tbl        *flow_tbl;
+       struct ulp_fdb_resource_info    *nxt_resource, *fid_resource;
+
+       flow_db = bnxt_ulp_cntxt_ptr2_flow_db_get(ulp_ctxt);
+       if (!flow_db) {
+               BNXT_TF_DBG(ERR, "Invalid Arguments\n");
+               return -EINVAL;
+       }
+
+       if (tbl_idx >= BNXT_ULP_FLOW_TABLE_MAX) {
+               BNXT_TF_DBG(ERR, "Invalid table index\n");
+               return -EINVAL;
+       }
+
+       flow_tbl = &flow_db->flow_tbl[tbl_idx];
+
+       /* check for limits of fid */
+       if (fid >= flow_tbl->num_flows || !fid) {
+               BNXT_TF_DBG(ERR, "Invalid flow index\n");
+               return -EINVAL;
+       }
+
+       /* check if the flow is active or not */
+       if (!ulp_flow_db_active_flow_is_set(flow_tbl, fid)) {
+               BNXT_TF_DBG(ERR, "flow does not exist\n");
+               return -EINVAL;
+       }
+
+       if (!*nxt_idx) {
+               fid_resource = &flow_tbl->flow_resources[fid];
+               ulp_flow_db_res_info_to_params(fid_resource, params);
+               ULP_FLOW_DB_RES_NXT_SET(*nxt_idx,
+                                       fid_resource->nxt_resource_idx);
+       } else {
+               nxt_resource = &flow_tbl->flow_resources[*nxt_idx];
+               ulp_flow_db_res_info_to_params(nxt_resource, params);
+               *nxt_idx = 0;
+               ULP_FLOW_DB_RES_NXT_SET(*nxt_idx,
+                                       nxt_resource->nxt_resource_idx);
+       }
+
+       /* all good, return success */
+       return 0;
+}
+
+/*
+ * Get the flow database entry iteratively
  *
  * flow_tbl [in] Ptr to flow table
  * fid [in/out] The index to the flow entry

diff --git a/drivers/net/bnxt/tf_ulp/ulp_flow_db.h b/drivers/net/bnxt/tf_ulp/ulp_flow_db.h
index 5435415..5361dd0 100644 (file)
--- a/drivers/net/bnxt/tf_ulp/ulp_flow_db.h
+++ b/drivers/net/bnxt/tf_ulp/ulp_flow_db.h
@@ -142,6 +142,23 @@ int32_t    ulp_flow_db_fid_free(struct bnxt_ulp_context            *ulp_ctxt,
                             enum bnxt_ulp_flow_db_tables       tbl_idx,
                             uint32_t                           fid);
 
+/*
+ *Get the flow database entry details
+ *
+ * ulp_ctxt [in] Ptr to ulp_context
+ * tbl_idx [in] Specify it is regular or default flow
+ * fid [in] The index to the flow entry
+ * nxt_idx [in/out] the index to the next entry
+ * params [out] The contents to be copied into params.
+ *
+ * returns 0 on success and negative on failure.
+ */
+int32_t        ulp_flow_db_resource_get(struct bnxt_ulp_context        *ulp_ctxt,
+                                enum bnxt_ulp_flow_db_tables   tbl_idx,
+                                uint32_t                       fid,
+                                uint32_t                       *nxt_idx,
+                                struct ulp_flow_db_res_params  *params);
+
 /*
  * Flush all flows in the flow database.
  *