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Message-Id: <1573709193-15446-6-git-send-email-sunil.kovvuri@gmail.com>
Date: Thu, 14 Nov 2019 10:56:20 +0530
From: sunil.kovvuri@...il.com
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, Prakash Brahmajyosyula <bprakash@...vell.com>,
Linu Cherian <lcherian@...vell.com>,
Sunil Goutham <sgoutham@...vell.com>
Subject: [PATCH v2 05/18] octeontx2-af: Add CGX LMAC stats to debugfs
From: Prakash Brahmajyosyula <bprakash@...vell.com>
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@...vell.com>
Signed-off-by: Linu Cherian <lcherian@...vell.com>
Signed-off-by: Sunil Goutham <sgoutham@...vell.com>
---
drivers/net/ethernet/marvell/octeontx2/af/rvu.h | 3 +
.../ethernet/marvell/octeontx2/af/rvu_debugfs.c | 160 +++++++++++++++++++++
2 files changed, 163 insertions(+)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index 269c43f..2fb871d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -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;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
index 581b611..c01a85e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
@@ -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 @@ static void rvu_dbg_npa_init(struct rvu *rvu)
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;
--
2.7.4
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