Commit 44ea803e authored by Ciara Loftus's avatar Ciara Loftus Committed by Tony Nguyen
Browse files

i40e: introduce new dump desc XDP command 



Interfaces already exist for dumping Rx and Tx descriptor information.
Introduce another for doing the same for XDP descriptors.

Signed-off-by: default avatarCiara Loftus <ciara.loftus@intel.com>
Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
parent 890c402c

drivers/net/ethernet/intel/i40e/i40e_debugfs.c

+48 −11
Original line number Diff line number Diff line
@@ -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");