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Arend van Spriellinvjw
Arend van Spriel
authored and
linvjw
committed
brcmsmac: expose 802.11 core statistics in debugfs
The 802.11 statistics obtained from the device can be retrieved dumping the 'macstat' file in debugfs folder. Reviewed-by: Hante Meuleman <meuleman@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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  • drivers/net/wireless/brcm80211/brcmsmac

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+133
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‎drivers/net/wireless/brcm80211/brcmsmac/debug.c‎

Lines changed: 133 additions & 33 deletions
Original file line numberDiff line numberDiff line change
@@ -71,48 +71,148 @@ struct dentry *brcms_debugfs_get_devdir(struct brcms_pub *drvr)
7171
}
7272

7373
static
74-
ssize_t brcms_debugfs_hardware_read(struct file *f, char __user *data,
75-
size_t count, loff_t *ppos)
74+
int brcms_debugfs_hardware_read(struct seq_file *s, void *data)
7675
{
77-
char buf[128];
78-
int res;
79-
struct brcms_pub *drvr = f->private_data;
80-
81-
/* only allow read from start */
82-
if (*ppos > 0)
83-
return 0;
84-
85-
res = scnprintf(buf, sizeof(buf),
86-
"board vendor: %x\n"
87-
"board type: %x\n"
88-
"board revision: %x\n"
89-
"board flags: %x\n"
90-
"board flags2: %x\n"
91-
"firmware revision: %x\n",
92-
drvr->wlc->hw->d11core->bus->boardinfo.vendor,
93-
drvr->wlc->hw->d11core->bus->boardinfo.type,
94-
drvr->wlc->hw->boardrev,
95-
drvr->wlc->hw->boardflags,
96-
drvr->wlc->hw->boardflags2,
97-
drvr->wlc->ucode_rev
98-
);
99-
100-
return simple_read_from_buffer(data, count, ppos, buf, res);
76+
struct brcms_pub *drvr = s->private;
77+
78+
seq_printf(s, "board vendor: %x\n"
79+
"board type: %x\n"
80+
"board revision: %x\n"
81+
"board flags: %x\n"
82+
"board flags2: %x\n"
83+
"firmware revision: %x\n",
84+
drvr->wlc->hw->d11core->bus->boardinfo.vendor,
85+
drvr->wlc->hw->d11core->bus->boardinfo.type,
86+
drvr->wlc->hw->boardrev,
87+
drvr->wlc->hw->boardflags,
88+
drvr->wlc->hw->boardflags2,
89+
drvr->wlc->ucode_rev);
90+
91+
return 0;
92+
}
93+
94+
static int brcms_debugfs_macstat_read(struct seq_file *s, void *data)
95+
{
96+
struct brcms_pub *drvr = s->private;
97+
struct brcms_info *wl = drvr->ieee_hw->priv;
98+
struct macstat stats;
99+
int i;
100+
101+
spin_lock_bh(&wl->lock);
102+
stats = *(drvr->wlc->core->macstat_snapshot);
103+
spin_unlock_bh(&wl->lock);
104+
105+
seq_printf(s, "txallfrm: %d\n", stats.txallfrm);
106+
seq_printf(s, "txrtsfrm: %d\n", stats.txrtsfrm);
107+
seq_printf(s, "txctsfrm: %d\n", stats.txctsfrm);
108+
seq_printf(s, "txackfrm: %d\n", stats.txackfrm);
109+
seq_printf(s, "txdnlfrm: %d\n", stats.txdnlfrm);
110+
seq_printf(s, "txbcnfrm: %d\n", stats.txbcnfrm);
111+
seq_printf(s, "txfunfl[8]:");
112+
for (i = 0; i < ARRAY_SIZE(stats.txfunfl); i++)
113+
seq_printf(s, " %d", stats.txfunfl[i]);
114+
seq_printf(s, "\ntxtplunfl: %d\n", stats.txtplunfl);
115+
seq_printf(s, "txphyerr: %d\n", stats.txphyerr);
116+
seq_printf(s, "pktengrxducast: %d\n", stats.pktengrxducast);
117+
seq_printf(s, "pktengrxdmcast: %d\n", stats.pktengrxdmcast);
118+
seq_printf(s, "rxfrmtoolong: %d\n", stats.rxfrmtoolong);
119+
seq_printf(s, "rxfrmtooshrt: %d\n", stats.rxfrmtooshrt);
120+
seq_printf(s, "rxinvmachdr: %d\n", stats.rxinvmachdr);
121+
seq_printf(s, "rxbadfcs: %d\n", stats.rxbadfcs);
122+
seq_printf(s, "rxbadplcp: %d\n", stats.rxbadplcp);
123+
seq_printf(s, "rxcrsglitch: %d\n", stats.rxcrsglitch);
124+
seq_printf(s, "rxstrt: %d\n", stats.rxstrt);
125+
seq_printf(s, "rxdfrmucastmbss: %d\n", stats.rxdfrmucastmbss);
126+
seq_printf(s, "rxmfrmucastmbss: %d\n", stats.rxmfrmucastmbss);
127+
seq_printf(s, "rxcfrmucast: %d\n", stats.rxcfrmucast);
128+
seq_printf(s, "rxrtsucast: %d\n", stats.rxrtsucast);
129+
seq_printf(s, "rxctsucast: %d\n", stats.rxctsucast);
130+
seq_printf(s, "rxackucast: %d\n", stats.rxackucast);
131+
seq_printf(s, "rxdfrmocast: %d\n", stats.rxdfrmocast);
132+
seq_printf(s, "rxmfrmocast: %d\n", stats.rxmfrmocast);
133+
seq_printf(s, "rxcfrmocast: %d\n", stats.rxcfrmocast);
134+
seq_printf(s, "rxrtsocast: %d\n", stats.rxrtsocast);
135+
seq_printf(s, "rxctsocast: %d\n", stats.rxctsocast);
136+
seq_printf(s, "rxdfrmmcast: %d\n", stats.rxdfrmmcast);
137+
seq_printf(s, "rxmfrmmcast: %d\n", stats.rxmfrmmcast);
138+
seq_printf(s, "rxcfrmmcast: %d\n", stats.rxcfrmmcast);
139+
seq_printf(s, "rxbeaconmbss: %d\n", stats.rxbeaconmbss);
140+
seq_printf(s, "rxdfrmucastobss: %d\n", stats.rxdfrmucastobss);
141+
seq_printf(s, "rxbeaconobss: %d\n", stats.rxbeaconobss);
142+
seq_printf(s, "rxrsptmout: %d\n", stats.rxrsptmout);
143+
seq_printf(s, "bcntxcancl: %d\n", stats.bcntxcancl);
144+
seq_printf(s, "rxf0ovfl: %d\n", stats.rxf0ovfl);
145+
seq_printf(s, "rxf1ovfl: %d\n", stats.rxf1ovfl);
146+
seq_printf(s, "rxf2ovfl: %d\n", stats.rxf2ovfl);
147+
seq_printf(s, "txsfovfl: %d\n", stats.txsfovfl);
148+
seq_printf(s, "pmqovfl: %d\n", stats.pmqovfl);
149+
seq_printf(s, "rxcgprqfrm: %d\n", stats.rxcgprqfrm);
150+
seq_printf(s, "rxcgprsqovfl: %d\n", stats.rxcgprsqovfl);
151+
seq_printf(s, "txcgprsfail: %d\n", stats.txcgprsfail);
152+
seq_printf(s, "txcgprssuc: %d\n", stats.txcgprssuc);
153+
seq_printf(s, "prs_timeout: %d\n", stats.prs_timeout);
154+
seq_printf(s, "rxnack: %d\n", stats.rxnack);
155+
seq_printf(s, "frmscons: %d\n", stats.frmscons);
156+
seq_printf(s, "txnack: %d\n", stats.txnack);
157+
seq_printf(s, "txglitch_nack: %d\n", stats.txglitch_nack);
158+
seq_printf(s, "txburst: %d\n", stats.txburst);
159+
seq_printf(s, "bphy_rxcrsglitch: %d\n", stats.bphy_rxcrsglitch);
160+
seq_printf(s, "phywatchdog: %d\n", stats.phywatchdog);
161+
seq_printf(s, "bphy_badplcp: %d\n", stats.bphy_badplcp);
162+
return 0;
163+
}
164+
165+
struct brcms_debugfs_entry {
166+
int (*read)(struct seq_file *seq, void *data);
167+
struct brcms_pub *drvr;
168+
};
169+
170+
static int brcms_debugfs_entry_open(struct inode *inode, struct file *f)
171+
{
172+
struct brcms_debugfs_entry *entry = inode->i_private;
173+
174+
return single_open(f, entry->read, entry->drvr);
101175
}
102176

103-
static const struct file_operations brcms_debugfs_hardware_ops = {
177+
static const struct file_operations brcms_debugfs_def_ops = {
104178
.owner = THIS_MODULE,
105-
.open = simple_open,
106-
.read = brcms_debugfs_hardware_read
179+
.open = brcms_debugfs_entry_open,
180+
.release = single_release,
181+
.read = seq_read,
182+
.llseek = seq_lseek
107183
};
108184

185+
static int
186+
brcms_debugfs_add_entry(struct brcms_pub *drvr, const char *fn,
187+
int (*read_fn)(struct seq_file *seq, void *data))
188+
{
189+
struct device *dev = &drvr->wlc->hw->d11core->dev;
190+
struct dentry *dentry = drvr->dbgfs_dir;
191+
struct brcms_debugfs_entry *entry;
192+
193+
if (IS_ERR_OR_NULL(dentry))
194+
return -ENOENT;
195+
196+
entry = devm_kzalloc(dev, sizeof(*entry), GFP_KERNEL);
197+
if (!entry)
198+
return -ENOMEM;
199+
200+
entry->read = read_fn;
201+
entry->drvr = drvr;
202+
203+
dentry = debugfs_create_file(fn, S_IRUGO, dentry, entry,
204+
&brcms_debugfs_def_ops);
205+
206+
return PTR_ERR_OR_ZERO(dentry);
207+
}
208+
109209
void brcms_debugfs_create_files(struct brcms_pub *drvr)
110210
{
111-
struct dentry *dentry = drvr->dbgfs_dir;
211+
if (IS_ERR_OR_NULL(drvr->dbgfs_dir))
212+
return;
112213

113-
if (!IS_ERR_OR_NULL(dentry))
114-
debugfs_create_file("hardware", S_IRUGO, dentry,
115-
drvr, &brcms_debugfs_hardware_ops);
214+
brcms_debugfs_add_entry(drvr, "hardware", brcms_debugfs_hardware_read);
215+
brcms_debugfs_add_entry(drvr, "macstat", brcms_debugfs_macstat_read);
116216
}
117217

118218
#define __brcms_fn(fn) \

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