netdev - [net-next 08/12] i40e: add XDP ring statistics to dump VSI debug output

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Date:   Wed,  1 Jul 2020 15:34:08 -0700
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net
Cc:     Ciara Loftus <ciara.loftus@...el.com>, netdev@...r.kernel.org,
        nhorman@...hat.com, sassmann@...hat.com,
        jeffrey.t.kirsher@...el.com, anthony.nguyen@...el.com,
        Andrew Bowers <andrewx.bowers@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>
Subject: [net-next 08/12] i40e: add XDP ring statistics to dump VSI debug output

From: Ciara Loftus <ciara.loftus@...el.com>

Prior to this, only the Rx and Tx ring statistics were dumped. The XDP
ring statistics are now dumped as well.

Signed-off-by: Ciara Loftus <ciara.loftus@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 .../net/ethernet/intel/i40e/i40e_debugfs.c    | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
index 9cb9b781451c..41a4cf8e3d61 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
@@ -319,6 +319,47 @@ static void i40e_dbg_dump_vsi_seid(struct i40e_pf *pf, int seid)
 			 i, tx_ring->itr_setting,
 			 ITR_IS_DYNAMIC(tx_ring->itr_setting) ? "dynamic" : "fixed");
 	}
+	if (i40e_enabled_xdp_vsi(vsi)) {
+		for (i = 0; i < vsi->num_queue_pairs; i++) {
+			struct i40e_ring *xdp_ring = READ_ONCE(vsi->xdp_rings[i]);
+
+			if (!xdp_ring)
+				continue;
+
+			dev_info(&pf->pdev->dev,
+				 "    xdp_rings[%i]: state = %lu, queue_index = %d, reg_idx = %d\n",
+				 i, *xdp_ring->state,
+				 xdp_ring->queue_index,
+				 xdp_ring->reg_idx);
+			dev_info(&pf->pdev->dev,
+				 "    xdp_rings[%i]: next_to_use = %d, next_to_clean = %d, ring_active = %i\n",
+				 i,
+				 xdp_ring->next_to_use,
+				 xdp_ring->next_to_clean,
+				 xdp_ring->ring_active);
+			dev_info(&pf->pdev->dev,
+				 "    xdp_rings[%i]: tx_stats: packets = %lld, bytes = %lld, restart_queue = %lld\n",
+				 i, xdp_ring->stats.packets,
+				 xdp_ring->stats.bytes,
+				 xdp_ring->tx_stats.restart_queue);
+			dev_info(&pf->pdev->dev,
+				 "    xdp_rings[%i]: tx_stats: tx_busy = %lld, tx_done_old = %lld\n",
+				 i,
+				 xdp_ring->tx_stats.tx_busy,
+				 xdp_ring->tx_stats.tx_done_old);
+			dev_info(&pf->pdev->dev,
+				 "    xdp_rings[%i]: size = %i\n",
+				 i, xdp_ring->size);
+			dev_info(&pf->pdev->dev,
+				 "    xdp_rings[%i]: DCB tc = %d\n",
+				 i, xdp_ring->dcb_tc);
+			dev_info(&pf->pdev->dev,
+				 "    xdp_rings[%i]: itr_setting = %d (%s)\n",
+				 i, xdp_ring->itr_setting,
+				 ITR_IS_DYNAMIC(xdp_ring->itr_setting) ?
+				 "dynamic" : "fixed");
+		}
+	}
 	rcu_read_unlock();
 	dev_info(&pf->pdev->dev,
 		 "    work_limit = %d\n",
-- 
2.26.2