netdev - [net-next 11/12] net/mlx5e: Enhance ICOSQ data on RX reporter's diagnose

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Date:   Thu,  2 Jul 2020 21:08:31 -0700
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Aya Levin <ayal@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 11/12] net/mlx5e: Enhance ICOSQ data on RX reporter's diagnose

From: Aya Levin <ayal@...lanox.com>

When the RQ is in striding RQ mode, it uses the ICOSQ as a helper queue.
In this mode, RX reporter dumps more info about the ICOSQ and its
related CQ.

$ devlink health diagnose pci/0000:00:0b.0 reporter rx
Common config:
    RQ:
      type: 2 stride size: 2048 size: 8
      CQ:
        stride size: 64 size: 1024
RQs:
    channel ix: 0 rqn: 2413 HW state: 1 SW state: 5 WQE counter: 7 posted WQEs: 7 cc: 7
    CQ:
      cqn: 1032 HW status: 0 ci: 0 size: 1024
    EQ:
      eqn: 7 irqn: 42 vecidx: 1 ci: 93 size: 2048
    ICOSQ:
      sqn: 2411 HW state: 1 cc: 74 pc: 74 WQE size: 128
      CQ:
        cqn: 1029 cc: 8 size: 128
    channel ix: 1 rqn: 2418 HW state: 1 SW state: 5 WQE counter: 7 posted WQEs: 7 cc: 7
    CQ:
      cqn: 1036 HW status: 0 ci: 0 size: 1024
    EQ:
      eqn: 8 irqn: 43 vecidx: 2 ci: 2 size: 2048
    ICOSQ:
      sqn: 2416 HW state: 1 cc: 74 pc: 74 WQE size: 128
      CQ:
        cqn: 1033 cc: 8 size: 128

Signed-off-by: Aya Levin <ayal@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 .../mellanox/mlx5/core/en/reporter_rx.c       | 59 ++++++++++++++++++-
 1 file changed, 56 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c
index 5f7fba74cfd4..32ed1067e6dc 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c
@@ -177,6 +177,59 @@ static int mlx5e_rx_reporter_recover(struct devlink_health_reporter *reporter,
 			 mlx5e_health_recover_channels(priv);
 }
 
+static int mlx5e_reporter_icosq_diagnose(struct mlx5e_icosq *icosq, u8 hw_state,
+					 struct devlink_fmsg *fmsg)
+{
+	int err;
+
+	err = mlx5e_health_fmsg_named_obj_nest_start(fmsg, "ICOSQ");
+	if (err)
+		return err;
+
+	err = devlink_fmsg_u32_pair_put(fmsg, "sqn", icosq->sqn);
+	if (err)
+		return err;
+
+	err = devlink_fmsg_u8_pair_put(fmsg, "HW state", hw_state);
+	if (err)
+		return err;
+
+	err = devlink_fmsg_u32_pair_put(fmsg, "cc", icosq->cc);
+	if (err)
+		return err;
+
+	err = devlink_fmsg_u32_pair_put(fmsg, "pc", icosq->pc);
+	if (err)
+		return err;
+
+	err = devlink_fmsg_u32_pair_put(fmsg, "WQE size",
+					mlx5_wq_cyc_get_size(&icosq->wq));
+	if (err)
+		return err;
+
+	err = mlx5e_health_fmsg_named_obj_nest_start(fmsg, "CQ");
+	if (err)
+		return err;
+
+	err = devlink_fmsg_u32_pair_put(fmsg, "cqn", icosq->cq.mcq.cqn);
+	if (err)
+		return err;
+
+	err = devlink_fmsg_u32_pair_put(fmsg, "cc", icosq->cq.wq.cc);
+	if (err)
+		return err;
+
+	err = devlink_fmsg_u32_pair_put(fmsg, "size", mlx5_cqwq_get_size(&icosq->cq.wq));
+	if (err)
+		return err;
+
+	err = mlx5e_health_fmsg_named_obj_nest_end(fmsg);
+	if (err)
+		return err;
+
+	return mlx5e_health_fmsg_named_obj_nest_end(fmsg);
+}
+
 static int mlx5e_rx_reporter_build_diagnose_output(struct mlx5e_rq *rq,
 						   struct devlink_fmsg *fmsg)
 {
@@ -234,15 +287,15 @@ static int mlx5e_rx_reporter_build_diagnose_output(struct mlx5e_rq *rq,
 	if (err)
 		return err;
 
-	err = devlink_fmsg_u8_pair_put(fmsg, "ICOSQ HW state", icosq_hw_state);
+	err = mlx5e_health_cq_diag_fmsg(&rq->cq, fmsg);
 	if (err)
 		return err;
 
-	err = mlx5e_health_cq_diag_fmsg(&rq->cq, fmsg);
+	err = mlx5e_health_eq_diag_fmsg(rq->cq.mcq.eq, fmsg);
 	if (err)
 		return err;
 
-	err = mlx5e_health_eq_diag_fmsg(rq->cq.mcq.eq, fmsg);
+	err = mlx5e_reporter_icosq_diagnose(icosq, icosq_hw_state, fmsg);
 	if (err)
 		return err;
 
-- 
2.26.2