[PATCH 10/17] net/bnxt: fix to handle queue stop during RSS flow create

[Kalesh A P <kalesh-anakkur.purayil@broadcom.com>]

From: Somnath Kotur <somnath.kotur@broadcom.com>

The programming of the RSS table was not taking into account if
any of the queues in the set were stopped prior to the flow
creation, hence leading to a vnic RSS config cmd failure thrown by
the FW.
Fix by programming only the active queues in the RSS action queue
set.

Fixes: 239695f754cb ("net/bnxt: enhance RSS action support")
Cc: stable@dpdk.org

Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
---
 drivers/net/bnxt/bnxt_flow.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_flow.c b/drivers/net/bnxt/bnxt_flow.c
index fc5bacf..f8e1096 100644
--- a/drivers/net/bnxt/bnxt_flow.c
+++ b/drivers/net/bnxt/bnxt_flow.c
@@ -1115,7 +1115,7 @@ bnxt_vnic_rss_cfg_update(struct bnxt *bp,
 			 struct rte_flow_error *error)
 {
 	const struct rte_flow_action_rss *rss;
-	unsigned int rss_idx, i, j;
+	unsigned int rss_idx, i, j, fw_idx;
 	uint16_t hash_type;
 	uint64_t types;
 	int rc;
@@ -1232,11 +1232,21 @@ bnxt_vnic_rss_cfg_update(struct bnxt *bp,
 		goto skip_rss_table;
 
 	/* Prepare the indirection table */
-	for (rss_idx = 0; rss_idx < HW_HASH_INDEX_SIZE; rss_idx++) {
+	for (rss_idx = 0, fw_idx = 0; rss_idx < HW_HASH_INDEX_SIZE;
+	     rss_idx++, fw_idx++) {
+		uint8_t *rxq_state = bp->eth_dev->data->rx_queue_state;
 		struct bnxt_rx_queue *rxq;
 		uint32_t idx;
 
-		idx = rss->queue[rss_idx % rss->queue_num];
+		for (i = 0; i < bp->rx_cp_nr_rings; i++) {
+			idx = rss->queue[fw_idx % rss->queue_num];
+			if (rxq_state[idx] != RTE_ETH_QUEUE_STATE_STOPPED)
+				break;
+			fw_idx++;
+		}
+
+		if (i == bp->rx_cp_nr_rings)
+			return 0;
 
 		if (BNXT_CHIP_P5(bp)) {
 			rxq = bp->rx_queues[idx];
-- 
2.10.1