[PATCH v2 net-next] octeontx2-af: nix: Log TX scheduler queue validation failures

[Ratheesh Kannoth <rkannoth@marvell.com>]

From: Subbaraya Sundeep <sbhatta@marvell.com>

Emit logs  when is_valid_txschq() rejects a scheduler queue
mapping so misconfigured TX scheduler allocations are easier to
diagnose.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>

---
v1 -> v2:

     - Switch dev_err() to dev_err_ratelimited() on PF/VF-driven paths
     - Add schq and lvl to both rejection messages
     - Clarify PF/link mismatch wording instead of "Invalid tx link"
     - Stop logging another function's map_func pcifunc
---
 .../net/ethernet/marvell/octeontx2/af/rvu_nix.c  | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 153eb57bad06..b0551559dacb 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -324,15 +324,23 @@ static bool is_valid_txschq(struct rvu *rvu, int blkaddr,
 	if (lvl >= hw->cap.nix_tx_aggr_lvl) {
 		if ((nix_get_tx_link(rvu, map_func) !=
 		     nix_get_tx_link(rvu, pcifunc)) &&
-		     (rvu_get_pf(rvu->pdev, map_func) !=
-				rvu_get_pf(rvu->pdev, pcifunc)))
+		    (rvu_get_pf(rvu->pdev, map_func) !=
+		     rvu_get_pf(rvu->pdev, pcifunc))) {
+			dev_err_ratelimited(rvu->dev,
+					    "NIX TX schq %u lvl %d: pcifunc %x PF/link mismatch\n",
+					    schq, lvl, pcifunc);
 			return false;
-		else
+		} else {
 			return true;
+		}
 	}
 
-	if (map_func != pcifunc)
+	if (map_func != pcifunc) {
+		dev_err_ratelimited(rvu->dev,
+				    "NIX TX schq %u lvl %d: not owned by pcifunc %x\n",
+				    schq, lvl, pcifunc);
 		return false;
+	}
 
 	return true;
 }
-- 
2.43.0