Commit c57211b5 authored by Prakash Brahmajyosyula's avatar Prakash Brahmajyosyula Committed by David S. Miller
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octeontx2-af: Add CGX LMAC stats to debugfs 



This patch adds CGX LMAC physical interface or serdes Rx/Tx
packet stats to debugfs.

'cat cgx<idx>/lmac<idx>/stats' dumps the current interface link
status and Rx/Tx stats. Stats include pkt received/transmitted,
dropped, pause frames etc etc.

Signed-off-by: default avatarPrakash Brahmajyosyula <bprakash@marvell.com>
Signed-off-by: default avatarLinu Cherian <lcherian@marvell.com>
Signed-off-by: default avatarSunil Goutham <sgoutham@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c5a797e0

drivers/net/ethernet/marvell/octeontx2/af/rvu.h

+3 −0
Original line number Diff line number Diff line
@@ -44,6 +44,9 @@ struct dump_ctx { 


struct rvu_debugfs {

	struct dentry *root;

	struct dentry *cgx_root;

	struct dentry *cgx;

	struct dentry *lmac;

	struct dentry *npa;

	struct dentry *nix;

	struct dump_ctx npa_aura_ctx;

drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c

+160 −0
Original line number Diff line number Diff line
@@ -18,9 +18,69 @@ 
#include "rvu_struct.h"

#include "rvu_reg.h"

#include "rvu.h"

#include "cgx.h"



#define DEBUGFS_DIR_NAME "octeontx2"



enum {

	CGX_STAT0,

	CGX_STAT1,

	CGX_STAT2,

	CGX_STAT3,

	CGX_STAT4,

	CGX_STAT5,

	CGX_STAT6,

	CGX_STAT7,

	CGX_STAT8,

	CGX_STAT9,

	CGX_STAT10,

	CGX_STAT11,

	CGX_STAT12,

	CGX_STAT13,

	CGX_STAT14,

	CGX_STAT15,

	CGX_STAT16,

	CGX_STAT17,

	CGX_STAT18,

};



static char *cgx_rx_stats_fields[] = {

	[CGX_STAT0]	= "Received packets",

	[CGX_STAT1]	= "Octets of received packets",

	[CGX_STAT2]	= "Received PAUSE packets",

	[CGX_STAT3]	= "Received PAUSE and control packets",

	[CGX_STAT4]	= "Filtered DMAC0 (NIX-bound) packets",

	[CGX_STAT5]	= "Filtered DMAC0 (NIX-bound) octets",

	[CGX_STAT6]	= "Packets dropped due to RX FIFO full",

	[CGX_STAT7]	= "Octets dropped due to RX FIFO full",

	[CGX_STAT8]	= "Error packets",

	[CGX_STAT9]	= "Filtered DMAC1 (NCSI-bound) packets",

	[CGX_STAT10]	= "Filtered DMAC1 (NCSI-bound) octets",

	[CGX_STAT11]	= "NCSI-bound packets dropped",

	[CGX_STAT12]	= "NCSI-bound octets dropped",

};



static char *cgx_tx_stats_fields[] = {

	[CGX_STAT0]	= "Packets dropped due to excessive collisions",

	[CGX_STAT1]	= "Packets dropped due to excessive deferral",

	[CGX_STAT2]	= "Multiple collisions before successful transmission",

	[CGX_STAT3]	= "Single collisions before successful transmission",

	[CGX_STAT4]	= "Total octets sent on the interface",

	[CGX_STAT5]	= "Total frames sent on the interface",

	[CGX_STAT6]	= "Packets sent with an octet count < 64",

	[CGX_STAT7]	= "Packets sent with an octet count == 64",

	[CGX_STAT8]	= "Packets sent with an octet count of 65–127",

	[CGX_STAT9]	= "Packets sent with an octet count of 128-255",

	[CGX_STAT10]	= "Packets sent with an octet count of 256-511",

	[CGX_STAT11]	= "Packets sent with an octet count of 512-1023",

	[CGX_STAT12]	= "Packets sent with an octet count of 1024-1518",

	[CGX_STAT13]	= "Packets sent with an octet count of > 1518",

	[CGX_STAT14]	= "Packets sent to a broadcast DMAC",

	[CGX_STAT15]	= "Packets sent to the multicast DMAC",

	[CGX_STAT16]	= "Transmit underflow and were truncated",

	[CGX_STAT17]	= "Control/PAUSE packets sent",

};



#define NDC_MAX_BANK(rvu, blk_addr) (rvu_read64(rvu, \

						blk_addr, NDC_AF_CONST) & 0xFF)
@@ -1269,6 +1329,105 @@ create_failed: 
	debugfs_remove_recursive(rvu->rvu_dbg.npa);

}



static int cgx_print_stats(struct seq_file *s, int lmac_id)

{

	struct cgx_link_user_info linfo;

	void *cgxd = s->private;

	int stat = 0, err = 0;

	u64 tx_stat, rx_stat;



	/* Link status */

	seq_puts(s, "\n=======Link Status======\n\n");

	err = cgx_get_link_info(cgxd, lmac_id, &linfo);

	if (err)

		seq_puts(s, "Failed to read link status\n");

	seq_printf(s, "\nLink is %s %d Mbps\n\n",

		   linfo.link_up ? "UP" : "DOWN", linfo.speed);



	/* Rx stats */

	seq_puts(s, "\n=======CGX RX_STATS======\n\n");

	while (stat < CGX_RX_STATS_COUNT) {

		err = cgx_get_rx_stats(cgxd, lmac_id, stat, &rx_stat);

		if (err)

			return err;

		seq_printf(s, "%s: %llu\n", cgx_rx_stats_fields[stat], rx_stat);

		stat++;

	}



	/* Tx stats */

	stat = 0;

	seq_puts(s, "\n=======CGX TX_STATS======\n\n");

	while (stat < CGX_TX_STATS_COUNT) {

		err = cgx_get_tx_stats(cgxd, lmac_id, stat, &tx_stat);

		if (err)

			return err;

		seq_printf(s, "%s: %llu\n", cgx_tx_stats_fields[stat], tx_stat);

		stat++;

	}



	return err;

}



static int rvu_dbg_cgx_stat_display(struct seq_file *filp, void *unused)

{

	struct dentry *current_dir;

	int err, lmac_id;

	char *buf;



	current_dir = filp->file->f_path.dentry->d_parent;

	buf = strrchr(current_dir->d_name.name, 'c');

	if (!buf)

		return -EINVAL;



	err = kstrtoint(buf + 1, 10, &lmac_id);

	if (!err) {

		err = cgx_print_stats(filp, lmac_id);

		if (err)

			return err;

	}

	return err;

}



RVU_DEBUG_SEQ_FOPS(cgx_stat, cgx_stat_display, NULL);



static void rvu_dbg_cgx_init(struct rvu *rvu)

{

	const struct device *dev = &rvu->pdev->dev;

	struct dentry *pfile;

	int i, lmac_id;

	char dname[20];

	void *cgx;



	rvu->rvu_dbg.cgx_root = debugfs_create_dir("cgx", rvu->rvu_dbg.root);



	for (i = 0; i < cgx_get_cgxcnt_max(); i++) {

		cgx = rvu_cgx_pdata(i, rvu);

		if (!cgx)

			continue;

		/* cgx debugfs dir */

		sprintf(dname, "cgx%d", i);

		rvu->rvu_dbg.cgx = debugfs_create_dir(dname,

						      rvu->rvu_dbg.cgx_root);

		for (lmac_id = 0; lmac_id < cgx_get_lmac_cnt(cgx); lmac_id++) {

			/* lmac debugfs dir */

			sprintf(dname, "lmac%d", lmac_id);

			rvu->rvu_dbg.lmac =

				debugfs_create_dir(dname, rvu->rvu_dbg.cgx);



			pfile =	debugfs_create_file("stats", 0600,

						    rvu->rvu_dbg.lmac, cgx,

						    &rvu_dbg_cgx_stat_fops);

			if (!pfile)

				goto create_failed;

		}

	}

	return;



create_failed:

	dev_err(dev, "Failed to create debugfs dir/file for CGX\n");

	debugfs_remove_recursive(rvu->rvu_dbg.cgx_root);

}



void rvu_dbg_init(struct rvu *rvu)

{

	struct device *dev = &rvu->pdev->dev;
@@ -1286,6 +1445,7 @@ void rvu_dbg_init(struct rvu *rvu) 


	rvu_dbg_npa_init(rvu);

	rvu_dbg_nix_init(rvu);

	rvu_dbg_cgx_init(rvu);



	return;

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