net/mlx5e: Extend tx reporter diagnostics output

Enhance tx reporter's diagnostics output to include: information common
to all SQs: SQ size, SQ stride size.
In addition add channel ix, tc, txq ix, cc and pc.

$ devlink health diagnose pci/0000:00:0b.0 reporter tx
 Common config:
   SQ:
     stride size: 64 size: 1024
 SQs:
   channel ix: 0 tc: 0 txq ix: 0 sqn: 4307 HW state: 1 stopped: false cc: 0 pc: 0
   channel ix: 1 tc: 0 txq ix: 1 sqn: 4312 HW state: 1 stopped: false cc: 0 pc: 0
   channel ix: 2 tc: 0 txq ix: 2 sqn: 4317 HW state: 1 stopped: false cc: 0 pc: 0
   channel ix: 3 tc: 0 txq ix: 3 sqn: 4322 HW state: 1 stopped: false cc: 0 pc: 0

$ devlink health diagnose pci/0000:00:0b.0 reporter tx -jp
{
    "Common config": {
        "SQ": {
            "stride size": 64,
            "size": 1024
        }
    },
    "SQs": [ {
            "channel ix": 0,
            "tc": 0,
            "txq ix": 0,
            "sqn": 4307,
            "HW state": 1,
            "stopped": false,
            "cc": 0,
            "pc": 0
        },{
            "channel ix": 1,
            "tc": 0,
            "txq ix": 1,
            "sqn": 4312,
            "HW state": 1,
            "stopped": false,
            "cc": 0,
            "pc": 0
        },{
            "channel ix": 2,
            "tc": 0,
            "txq ix": 2,
            "sqn": 4317,
            "HW state": 1,
            "stopped": false,
            "cc": 0,
            "pc": 0
        },{
            "channel ix": 3,
            "tc": 0,
            "txq ix": 3,
            "sqn": 4322,
            "HW state": 1,
            "stopped": false,
            "cc": 0,
            "pc": 0
         } ]
}
Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/en/health.c

@@ -4,6 +4,36 @@
 #include "health.h"
 #include "lib/eq.h"
 
+int mlx5e_reporter_named_obj_nest_start(struct devlink_fmsg *fmsg, char *name)
+{
+	int err;
+
+	err = devlink_fmsg_pair_nest_start(fmsg, name);
+	if (err)
+		return err;
+
+	err = devlink_fmsg_obj_nest_start(fmsg);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+int mlx5e_reporter_named_obj_nest_end(struct devlink_fmsg *fmsg)
+{
+	int err;
+
+	err = devlink_fmsg_obj_nest_end(fmsg);
+	if (err)
+		return err;
+
+	err = devlink_fmsg_pair_nest_end(fmsg);
+	if (err)
+		return err;
+
+	return 0;
+}
+
 int mlx5e_health_sq_to_ready(struct mlx5e_channel *channel, u32 sqn)
 {
 	struct mlx5_core_dev *mdev = channel->mdev;

drivers/net/ethernet/mellanox/mlx5/core/en/health.h

@@ -11,6 +11,9 @@ void mlx5e_reporter_tx_destroy(struct mlx5e_priv *priv);
 void mlx5e_reporter_tx_err_cqe(struct mlx5e_txqsq *sq);
 int mlx5e_reporter_tx_timeout(struct mlx5e_txqsq *sq);
 
+int mlx5e_reporter_named_obj_nest_start(struct devlink_fmsg *fmsg, char *name);
+int mlx5e_reporter_named_obj_nest_end(struct devlink_fmsg *fmsg);
+
 #define MLX5E_REPORTER_PER_Q_MAX_LEN 256
 
 struct mlx5e_err_ctx {

drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c

@@ -146,7 +146,7 @@ static int mlx5e_tx_reporter_recover(struct devlink_health_reporter *reporter,
 
 static int
 mlx5e_tx_reporter_build_diagnose_output(struct devlink_fmsg *fmsg,
-					struct mlx5e_txqsq *sq)
+					struct mlx5e_txqsq *sq, int tc)
 {
 	struct mlx5e_priv *priv = sq->channel->priv;
 	bool stopped = netif_xmit_stopped(sq->txq);
@@ -161,6 +161,18 @@ mlx5e_tx_reporter_build_diagnose_output(struct devlink_fmsg *fmsg,
 	if (err)
 		return err;
 
+	err = devlink_fmsg_u32_pair_put(fmsg, "channel ix", sq->ch_ix);
+	if (err)
+		return err;
+
+	err = devlink_fmsg_u32_pair_put(fmsg, "tc", tc);
+	if (err)
+		return err;
+
+	err = devlink_fmsg_u32_pair_put(fmsg, "txq ix", sq->txq_ix);
+	if (err)
+		return err;
+
 	err = devlink_fmsg_u32_pair_put(fmsg, "sqn", sq->sqn);
 	if (err)
 		return err;
@@ -173,6 +185,14 @@ mlx5e_tx_reporter_build_diagnose_output(struct devlink_fmsg *fmsg,
 	if (err)
 		return err;
 
+	err = devlink_fmsg_u32_pair_put(fmsg, "cc", sq->cc);
+	if (err)
+		return err;
+
+	err = devlink_fmsg_u32_pair_put(fmsg, "pc", sq->pc);
+	if (err)
+		return err;
+
 	err = devlink_fmsg_obj_nest_end(fmsg);
 	if (err)
 		return err;
@@ -184,24 +204,57 @@ static int mlx5e_tx_reporter_diagnose(struct devlink_health_reporter *reporter,
 				      struct devlink_fmsg *fmsg)
 {
 	struct mlx5e_priv *priv = devlink_health_reporter_priv(reporter);
-	int i, err = 0;
+	struct mlx5e_txqsq *generic_sq = priv->txq2sq[0];
+	u32 sq_stride, sq_sz;
+
+	int i, tc, err = 0;
 
 	mutex_lock(&priv->state_lock);
 
 	if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
 		goto unlock;
 
+	sq_sz = mlx5_wq_cyc_get_size(&generic_sq->wq);
+	sq_stride = MLX5_SEND_WQE_BB;
+
+	err = mlx5e_reporter_named_obj_nest_start(fmsg, "Common Config");
+	if (err)
+		goto unlock;
+
+	err = mlx5e_reporter_named_obj_nest_start(fmsg, "SQ");
+	if (err)
+		goto unlock;
+
+	err = devlink_fmsg_u64_pair_put(fmsg, "stride size", sq_stride);
+	if (err)
+		goto unlock;
+
+	err = devlink_fmsg_u32_pair_put(fmsg, "size", sq_sz);
+	if (err)
+		goto unlock;
+
+	err = mlx5e_reporter_named_obj_nest_end(fmsg);
+	if (err)
+		goto unlock;
+
+	err = mlx5e_reporter_named_obj_nest_end(fmsg);
+	if (err)
+		goto unlock;
+
 	err = devlink_fmsg_arr_pair_nest_start(fmsg, "SQs");
 	if (err)
 		goto unlock;
 
-	for (i = 0; i < priv->channels.num * priv->channels.params.num_tc;
-	     i++) {
-		struct mlx5e_txqsq *sq = priv->txq2sq[i];
+	for (i = 0; i < priv->channels.num; i++) {
+		struct mlx5e_channel *c = priv->channels.c[i];
+
+		for (tc = 0; tc < priv->channels.params.num_tc; tc++) {
+			struct mlx5e_txqsq *sq = &c->sq[tc];
 
-		err = mlx5e_tx_reporter_build_diagnose_output(fmsg, sq);
-		if (err)
-			goto unlock;
+			err = mlx5e_tx_reporter_build_diagnose_output(fmsg, sq, tc);
+			if (err)
+				goto unlock;
+		}
 	}
 	err = devlink_fmsg_arr_pair_nest_end(fmsg);
 	if (err)