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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: Prakash Brahmajyosyula <bprakash@marvell.com>
Signed-off-by: Linu Cherian <lcherian@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
alistair/sunxi64-5.5-dsi
Prakash Brahmajyosyula 2019-11-14 10:56:20 +05:30 committed by David S. Miller
parent c5a797e081
commit c57211b536
2 changed files with 163 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/marvell/octeontx2/af/rvu.h
View File

@ -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;

160
drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
View File

@ -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;