[dpdk-stable] [PATCH 18.11 10/19] net/bnxt: fix flow flush handling

[Somnath Kotur <somnath.kotur@broadcom.com>]

From: Ajit Khaparde <ajit.khaparde@broadcom.com>

We are not freeing all the flows when a flow_flush is called.
Iterate through all the flows belonging to all the VNICs in use and
free the filters.

Fixes: 4ace85a7da25 ("net/bnxt: allocate rings and groups")
Cc: stable@dpdk.org

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Rahul Gupta <rahul.gupta@broadcom.com>
Reviewed-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
---
 drivers/net/bnxt/bnxt_flow.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_flow.c b/drivers/net/bnxt/bnxt_flow.c
index 1df1890..aca5f38 100644
--- a/drivers/net/bnxt/bnxt_flow.c
+++ b/drivers/net/bnxt/bnxt_flow.c
@@ -1133,6 +1133,7 @@ static int
 bnxt_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error)
 {
 	struct bnxt *bp = dev->data->dev_private;
+	struct bnxt_filter_info *filter = NULL;
 	struct bnxt_vnic_info *vnic;
 	struct rte_flow *flow;
 	unsigned int i;
@@ -1140,14 +1141,20 @@ bnxt_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error)
 
 	for (i = 0; i < bp->nr_vnics; i++) {
 		vnic = &bp->vnic_info[i];
-		STAILQ_FOREACH(flow, &vnic->flow_list, next) {
-			struct bnxt_filter_info *filter = flow->filter;
+		if (vnic && vnic->fw_vnic_id == (uint16_t)-1)
+			continue;
+
+		while (!STAILQ_EMPTY(&vnic->flow_list)) {
+			flow = STAILQ_FIRST(&vnic->flow_list);
+			filter = flow->filter;
 
 			if (filter->filter_type == HWRM_CFA_EM_FILTER)
 				ret = bnxt_hwrm_clear_em_filter(bp, filter);
 			if (filter->filter_type == HWRM_CFA_NTUPLE_FILTER)
 				ret = bnxt_hwrm_clear_ntuple_filter(bp, filter);
 
+			ret = bnxt_hwrm_clear_l2_filter(bp, filter);
+
 			if (ret) {
 				rte_flow_error_set
 					(error,
@@ -1158,9 +1165,13 @@ bnxt_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error)
 				return -rte_errno;
 			}
 
+			bnxt_free_filter(bp, filter);
+
 			STAILQ_REMOVE(&vnic->flow_list, flow,
 				      rte_flow, next);
+
 			rte_free(flow);
+
 		}
 	}
 
-- 
2.10.1