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Date: Wed, 1 Jul 2020 15:34:09 -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 09/12] i40e: introduce new dump desc XDP command
From: Ciara Loftus <ciara.loftus@...el.com>
Interfaces already exist for dumping Rx and Tx descriptor information.
Introduce another for doing the same for XDP descriptors.
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 | 59 +++++++++++++++----
1 file changed, 48 insertions(+), 11 deletions(-)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
index 41a4cf8e3d61..d3ad2e3aa838 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
@@ -10,6 +10,12 @@
static struct dentry *i40e_dbg_root;
+enum ring_type {
+ RING_TYPE_RX,
+ RING_TYPE_TX,
+ RING_TYPE_XDP
+};
+
/**
* i40e_dbg_find_vsi - searches for the vsi with the given seid
* @pf: the PF structure to search for the vsi
@@ -530,11 +536,12 @@ static void i40e_dbg_dump_aq_desc(struct i40e_pf *pf)
* @ring_id: ring id entered by user
* @desc_n: descriptor number entered by user
* @pf: the i40e_pf created in command write
- * @is_rx_ring: true if rx, false if tx
+ * @type: enum describing whether ring is RX, TX or XDP
**/
static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n,
- struct i40e_pf *pf, bool is_rx_ring)
+ struct i40e_pf *pf, enum ring_type type)
{
+ bool is_rx_ring = type == RING_TYPE_RX;
struct i40e_tx_desc *txd;
union i40e_rx_desc *rxd;
struct i40e_ring *ring;
@@ -546,6 +553,10 @@ static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n,
dev_info(&pf->pdev->dev, "vsi %d not found\n", vsi_seid);
return;
}
+ if (type == RING_TYPE_XDP && !i40e_enabled_xdp_vsi(vsi)) {
+ dev_info(&pf->pdev->dev, "XDP not enabled on VSI %d\n", vsi_seid);
+ return;
+ }
if (ring_id >= vsi->num_queue_pairs || ring_id < 0) {
dev_info(&pf->pdev->dev, "ring %d not found\n", ring_id);
return;
@@ -557,15 +568,32 @@ static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n,
return;
}
- ring = kmemdup(is_rx_ring
- ? vsi->rx_rings[ring_id] : vsi->tx_rings[ring_id],
- sizeof(*ring), GFP_KERNEL);
+ switch (type) {
+ case RING_TYPE_RX:
+ ring = kmemdup(vsi->rx_rings[ring_id], sizeof(*ring), GFP_KERNEL);
+ break;
+ case RING_TYPE_TX:
+ ring = kmemdup(vsi->tx_rings[ring_id], sizeof(*ring), GFP_KERNEL);
+ break;
+ case RING_TYPE_XDP:
+ ring = kmemdup(vsi->xdp_rings[ring_id], sizeof(*ring), GFP_KERNEL);
+ break;
+ }
if (!ring)
return;
if (cnt == 2) {
- dev_info(&pf->pdev->dev, "vsi = %02i %s ring = %02i\n",
- vsi_seid, is_rx_ring ? "rx" : "tx", ring_id);
+ switch (type) {
+ case RING_TYPE_RX:
+ dev_info(&pf->pdev->dev, "VSI = %02i Rx ring = %02i\n", vsi_seid, ring_id);
+ break;
+ case RING_TYPE_TX:
+ dev_info(&pf->pdev->dev, "VSI = %02i Tx ring = %02i\n", vsi_seid, ring_id);
+ break;
+ case RING_TYPE_XDP:
+ dev_info(&pf->pdev->dev, "VSI = %02i XDP ring = %02i\n", vsi_seid, ring_id);
+ break;
+ }
for (i = 0; i < ring->count; i++) {
if (!is_rx_ring) {
txd = I40E_TX_DESC(ring, i);
@@ -603,7 +631,7 @@ static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n,
rxd->read.rsvd1, rxd->read.rsvd2);
}
} else {
- dev_info(&pf->pdev->dev, "dump desc rx/tx <vsi_seid> <ring_id> [<desc_n>]\n");
+ dev_info(&pf->pdev->dev, "dump desc rx/tx/xdp <vsi_seid> <ring_id> [<desc_n>]\n");
}
out:
@@ -960,13 +988,19 @@ static ssize_t i40e_dbg_command_write(struct file *filp,
cnt = sscanf(&cmd_buf[12], "%i %i %i",
&vsi_seid, &ring_id, &desc_n);
i40e_dbg_dump_desc(cnt, vsi_seid, ring_id,
- desc_n, pf, true);
+ desc_n, pf, RING_TYPE_RX);
} else if (strncmp(&cmd_buf[10], "tx", 2)
== 0) {
cnt = sscanf(&cmd_buf[12], "%i %i %i",
&vsi_seid, &ring_id, &desc_n);
i40e_dbg_dump_desc(cnt, vsi_seid, ring_id,
- desc_n, pf, false);
+ desc_n, pf, RING_TYPE_TX);
+ } else if (strncmp(&cmd_buf[10], "xdp", 3)
+ == 0) {
+ cnt = sscanf(&cmd_buf[13], "%i %i %i",
+ &vsi_seid, &ring_id, &desc_n);
+ i40e_dbg_dump_desc(cnt, vsi_seid, ring_id,
+ desc_n, pf, RING_TYPE_XDP);
} else if (strncmp(&cmd_buf[10], "aq", 2) == 0) {
i40e_dbg_dump_aq_desc(pf);
} else {
@@ -974,6 +1008,8 @@ static ssize_t i40e_dbg_command_write(struct file *filp,
"dump desc tx <vsi_seid> <ring_id> [<desc_n>]\n");
dev_info(&pf->pdev->dev,
"dump desc rx <vsi_seid> <ring_id> [<desc_n>]\n");
+ dev_info(&pf->pdev->dev,
+ "dump desc xdp <vsi_seid> <ring_id> [<desc_n>]\n");
dev_info(&pf->pdev->dev, "dump desc aq\n");
}
} else if (strncmp(&cmd_buf[5], "reset stats", 11) == 0) {
@@ -1144,7 +1180,7 @@ static ssize_t i40e_dbg_command_write(struct file *filp,
buff = NULL;
} else {
dev_info(&pf->pdev->dev,
- "dump desc tx <vsi_seid> <ring_id> [<desc_n>], dump desc rx <vsi_seid> <ring_id> [<desc_n>],\n");
+ "dump desc tx <vsi_seid> <ring_id> [<desc_n>], dump desc rx <vsi_seid> <ring_id> [<desc_n>], dump desc xdp <vsi_seid> <ring_id> [<desc_n>],\n");
dev_info(&pf->pdev->dev, "dump switch\n");
dev_info(&pf->pdev->dev, "dump vsi [seid]\n");
dev_info(&pf->pdev->dev, "dump reset stats\n");
@@ -1560,6 +1596,7 @@ static ssize_t i40e_dbg_command_write(struct file *filp,
dev_info(&pf->pdev->dev, " dump vsi [seid]\n");
dev_info(&pf->pdev->dev, " dump desc tx <vsi_seid> <ring_id> [<desc_n>]\n");
dev_info(&pf->pdev->dev, " dump desc rx <vsi_seid> <ring_id> [<desc_n>]\n");
+ dev_info(&pf->pdev->dev, " dump desc xdp <vsi_seid> <ring_id> [<desc_n>]\n");
dev_info(&pf->pdev->dev, " dump desc aq\n");
dev_info(&pf->pdev->dev, " dump reset stats\n");
dev_info(&pf->pdev->dev, " dump debug fwdata <cluster_id> <table_id> <index>\n");
--
2.26.2
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