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Date: Mon, 21 Dec 2015 12:46:08 +0530
From: Hariprasad Shenai <hariprasad@...lsio.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, leedom@...lsio.com, nirranjan@...lsio.com,
Hariprasad Shenai <hariprasad@...lsio.com>
Subject: [PATCH net-next 3/5] cxgb4: add dcb info node in debugfs
Add new /sys/kernel/debug/cxgb4/*/dcb_info node to dump out
various Data Center Bridging information.
Signed-off-by: Hariprasad Shenai <hariprasad@...lsio.com>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c | 11 --
drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h | 11 ++
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 191 +++++++++++++++++++++
drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h | 1 +
4 files changed, 203 insertions(+), 11 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c
index 052c660..dde7b80 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c
@@ -20,17 +20,6 @@
#include "cxgb4.h"
-/* DCBx version control
- */
-static const char * const dcb_ver_array[] = {
- "Unknown",
- "DCBx-CIN",
- "DCBx-CEE 1.01",
- "DCBx-IEEE",
- "", "", "",
- "Auto Negotiated"
-};
-
static inline bool cxgb4_dcb_state_synced(enum cxgb4_dcb_state state)
{
if (state == CXGB4_DCB_STATE_FW_ALLSYNCED ||
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h
index ccf24d3..6581ba8 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h
@@ -70,6 +70,17 @@
CXGB4_DCB_STATE_FW_ALLSYNCED); \
} while (0)
+/* DCBx version control
+ */
+static const char * const dcb_ver_array[] = {
+ "Unknown",
+ "DCBx-CIN",
+ "DCBx-CEE 1.01",
+ "DCBx-IEEE",
+ "", "", "",
+ "Auto Negotiated"
+};
+
/* States we can be in for a port's Data Center Bridging.
*/
enum cxgb4_dcb_state {
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 62a343f..a008afdb 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -44,6 +44,7 @@
#include "t4fw_api.h"
#include "cxgb4_debugfs.h"
#include "clip_tbl.h"
+#include "cxgb4_dcb.h"
#include "l2t.h"
/* generic seq_file support for showing a table of size rows x width. */
@@ -2219,6 +2220,193 @@ static const struct file_operations rss_vf_config_debugfs_fops = {
.release = seq_release_private
};
+#ifdef CONFIG_CHELSIO_T4_DCB
+/* Data Center Briging information for each port */
+static int dcb_info_show(struct seq_file *seq, void *v)
+{
+ struct adapter *adap = seq->private;
+
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(seq, "Data Center Bridging Information\n");
+ } else {
+ int port = (uintptr_t)v - 2;
+ struct net_device *dev = adap->port[port];
+ struct port_info *pi = netdev2pinfo(dev);
+ struct port_dcb_info *dcb = &pi->dcb;
+
+ seq_puts(seq, "\n");
+ seq_printf(seq, "Port: %d (DCB negotiated: %s)\n",
+ port,
+ cxgb4_dcb_enabled(dev) ? "yes" : "no");
+
+ if (cxgb4_dcb_enabled(dev))
+ seq_printf(seq, "[ DCBx Version %s ]\n",
+ dcb_ver_array[dcb->dcb_version]);
+
+ if (dcb->msgs) {
+ int i;
+
+ seq_puts(seq, "\n Index\t\t\t :\t");
+ for (i = 0; i < 8; i++)
+ seq_printf(seq, " %3d", i);
+ seq_puts(seq, "\n\n");
+ }
+
+ if (dcb->msgs & CXGB4_DCB_FW_PGID) {
+ int prio, pgid;
+
+ seq_puts(seq, " Priority Group IDs\t :\t");
+ for (prio = 0; prio < 8; prio++) {
+ pgid = (dcb->pgid >> 4 * (7 - prio)) & 0xf;
+ seq_printf(seq, " %3d", pgid);
+ }
+ seq_puts(seq, "\n");
+ }
+
+ if (dcb->msgs & CXGB4_DCB_FW_PGRATE) {
+ int pg;
+
+ seq_puts(seq, " Priority Group BW(%)\t :\t");
+ for (pg = 0; pg < 8; pg++)
+ seq_printf(seq, " %3d", dcb->pgrate[pg]);
+ seq_puts(seq, "\n");
+
+ if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE) {
+ seq_puts(seq, " TSA Algorithm\t\t :\t");
+ for (pg = 0; pg < 8; pg++)
+ seq_printf(seq, " %3d", dcb->tsa[pg]);
+ seq_puts(seq, "\n");
+ }
+
+ seq_printf(seq, " Max PG Traffic Classes [%3d ]\n",
+ dcb->pg_num_tcs_supported);
+
+ seq_puts(seq, "\n");
+ }
+
+ if (dcb->msgs & CXGB4_DCB_FW_PRIORATE) {
+ int prio;
+
+ seq_puts(seq, " Priority Rate\t:\t");
+ for (prio = 0; prio < 8; prio++)
+ seq_printf(seq, " %3d", dcb->priorate[prio]);
+ seq_puts(seq, "\n");
+ }
+
+ if (dcb->msgs & CXGB4_DCB_FW_PFC) {
+ int prio, pfcen;
+
+ seq_puts(seq, " Priority Flow Control :\t");
+ for (prio = 0; prio < 8; prio++) {
+ pfcen = (dcb->pfcen >> 1 * (7 - prio)) & 0x1;
+ seq_printf(seq, " %3d", pfcen);
+ }
+ seq_puts(seq, "\n");
+
+ seq_printf(seq, " Max PFC Traffic Classes [%3d ]\n",
+ dcb->pfc_num_tcs_supported);
+
+ seq_puts(seq, "\n");
+ }
+
+ if (dcb->msgs & CXGB4_DCB_FW_APP_ID) {
+ int app, napps;
+
+ seq_puts(seq, " Application Information:\n");
+ seq_puts(seq, " App Priority Selection Protocol\n");
+ seq_puts(seq, " Index Map Field ID\n");
+ for (app = 0, napps = 0;
+ app < CXGB4_MAX_DCBX_APP_SUPPORTED; app++) {
+ struct app_priority *ap =
+ &dcb->app_priority[app];
+ static const char * const sel_names[] = {
+ "Ethertype",
+ "Socket TCP",
+ "Socket UDP",
+ "Socket All",
+ };
+ const char *sel_name;
+
+ /* skip empty slots */
+ if (ap->protocolid == 0)
+ continue;
+ napps++;
+
+ if (ap->sel_field < ARRAY_SIZE(sel_names))
+ sel_name = sel_names[ap->sel_field];
+ else
+ sel_name = "UNKNOWN";
+
+ seq_printf(seq, " %3d %#04x %-10s (%d)"
+ " %#06x (%d)\n",
+ app,
+ ap->user_prio_map,
+ sel_name, ap->sel_field,
+ ap->protocolid, ap->protocolid);
+ }
+ if (napps == 0)
+ seq_puts(seq, " --- None ---\n");
+ }
+ }
+ return 0;
+}
+
+static inline void *dcb_info_get_idx(struct adapter *adap, loff_t pos)
+{
+ return (pos <= adap->params.nports
+ ? (void *)((uintptr_t)pos + 1)
+ : NULL);
+}
+
+static void *dcb_info_start(struct seq_file *seq, loff_t *pos)
+{
+ struct adapter *adap = seq->private;
+
+ return (*pos
+ ? dcb_info_get_idx(adap, *pos)
+ : SEQ_START_TOKEN);
+}
+
+static void dcb_info_stop(struct seq_file *seq, void *v)
+{
+}
+
+static void *dcb_info_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ struct adapter *adap = seq->private;
+
+ (*pos)++;
+ return dcb_info_get_idx(adap, *pos);
+}
+
+static const struct seq_operations dcb_info_seq_ops = {
+ .start = dcb_info_start,
+ .next = dcb_info_next,
+ .stop = dcb_info_stop,
+ .show = dcb_info_show
+};
+
+static int dcb_info_open(struct inode *inode, struct file *file)
+{
+ int res = seq_open(file, &dcb_info_seq_ops);
+
+ if (!res) {
+ struct seq_file *seq = file->private_data;
+
+ seq->private = inode->i_private;
+ }
+ return res;
+}
+
+static const struct file_operations dcb_info_debugfs_fops = {
+ .owner = THIS_MODULE,
+ .open = dcb_info_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+#endif /* CONFIG_CHELSIO_T4_DCB */
+
/**
* ethqset2pinfo - return port_info of an Ethernet Queue Set
* @adap: the adapter
@@ -3049,6 +3237,9 @@ int t4_setup_debugfs(struct adapter *adap)
#if IS_ENABLED(CONFIG_IPV6)
{ "clip_tbl", &clip_tbl_debugfs_fops, S_IRUSR, 0 },
#endif
+#ifdef CONFIG_CHELSIO_T4_DCB
+ { "dcb_info", &dcb_info_debugfs_fops, S_IRUSR, 0 },
+#endif
{ "tids", &tid_info_debugfs_fops, S_IRUSR, 0},
{ "blocked_fl", &blocked_fl_fops, S_IRUSR | S_IWUSR, 0 },
{ "meminfo", &meminfo_fops, S_IRUSR, 0 },
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
index cf711d5..4fd7f1a 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
@@ -293,6 +293,7 @@ unsigned int cxgb4_port_chan(const struct net_device *dev);
unsigned int cxgb4_port_viid(const struct net_device *dev);
unsigned int cxgb4_tp_smt_idx(enum chip_type chip, unsigned int viid);
unsigned int cxgb4_port_idx(const struct net_device *dev);
+int cxgb4_dcb_enabled(const struct net_device *dev);
unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu,
unsigned int *idx);
unsigned int cxgb4_best_aligned_mtu(const unsigned short *mtus,
--
2.3.4
--
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