From: Mike Baucom <michael.baucom@broadcom.com>
Date: Wed, 15 Apr 2020 14:49:07 +0000 (+0530)
Subject: net/bnxt: allow usage of more resources in flow DB
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=5a640d00107a8a00a439e9c4109f61b1061c9eae;p=dpdk.git

net/bnxt: allow usage of more resources in flow DB

Allow the flow db resources to be more effectively utilized.

Signed-off-by: Mike Baucom <michael.baucom@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Kishore Padmanabha <kishore.padmanabha@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@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 aed50785c8..e99e94ab7b 100644
--- a/drivers/net/bnxt/tf_ulp/ulp_flow_db.c
+++ b/drivers/net/bnxt/tf_ulp/ulp_flow_db.c
@@ -331,6 +331,10 @@ int32_t ulp_flow_db_fid_alloc(struct bnxt_ulp_context		*ulp_ctxt,
 		BNXT_TF_DBG(ERR, "Flow database has reached max flows\n");
 		return -ENOMEM;
 	}
+	if (flow_tbl->tail_index <= (flow_tbl->head_index + 1)) {
+		BNXT_TF_DBG(ERR, "Flow database has reached max resources\n");
+		return -ENOMEM;
+	}
 	*fid = flow_tbl->flow_tbl_stack[flow_tbl->head_index];
 	flow_tbl->head_index++;
 	ulp_flow_db_active_flow_set(flow_tbl, *fid, 1);
@@ -385,7 +389,7 @@ int32_t	ulp_flow_db_resource_add(struct bnxt_ulp_context	*ulp_ctxt,
 	}
 
 	/* check for max resource */
-	if ((flow_tbl->num_flows + 1) >= flow_tbl->tail_index) {
+	if ((flow_tbl->head_index + 1) >= flow_tbl->tail_index) {
 		BNXT_TF_DBG(ERR, "Flow db has reached max resources\n");
 		return -ENOMEM;
 	}