From: Satha Rao <skoteshwar@marvell.com>
Date: Wed, 7 Jul 2021 16:49:16 +0000 (-0400)
Subject: net/octeontx2: fix TM node statistics query
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=d9dda782ac08a47ca092a0c499b21635b23e6644;p=dpdk.git

net/octeontx2: fix TM node statistics query

Until hierarchy committed TM hardware resources are not allocated
for node.
This patch check for status of HW resources before reading statistics.

Fixes: 1e25d57fae38 ("net/octeontx2: add TM stats and shaper profile")
Cc: stable@dpdk.org

Signed-off-by: Satha Rao <skoteshwar@marvell.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
---

diff --git a/drivers/net/octeontx2/otx2_tm.c b/drivers/net/octeontx2/otx2_tm.c
index fdd56697f1..6aff1f9587 100644
--- a/drivers/net/octeontx2/otx2_tm.c
+++ b/drivers/net/octeontx2/otx2_tm.c
@@ -2769,6 +2769,12 @@ otx2_nix_tm_node_stats_read(struct rte_eth_dev *eth_dev, uint32_t node_id,
 		return -EINVAL;
 	}
 
+	if (!(tm_node->flags & NIX_TM_NODE_HWRES)) {
+		error->type = RTE_TM_ERROR_TYPE_NODE_ID;
+		error->message = "HW resources not allocated";
+		return -EINVAL;
+	}
+
 	/* Stats support only for leaf node or TL1 root */
 	if (nix_tm_is_leaf(dev, tm_node->lvl)) {
 		reg = (((uint64_t)tm_node->id) << 32);