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mac80211: mesh statistics and config through debugfs
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This patch contains the debugfs code for mesh statistics and configuration
parameters. Please note that generic support for r/w debugfs attributes has been
added.

Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Luis Carlos Cobo authored and John W. Linville committed Mar 6, 2008
1 parent 050ac52 commit 9f42f60
Showing 1 changed file with 197 additions and 0 deletions.
197 changes: 197 additions & 0 deletions net/mac80211/debugfs_netdev.c
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Original file line number Diff line number Diff line change
Expand Up @@ -39,13 +39,49 @@ static ssize_t ieee80211_if_read(
return ret;
}

#ifdef CONFIG_MAC80211_MESH
static ssize_t ieee80211_if_write(
struct ieee80211_sub_if_data *sdata,
char const __user *userbuf,
size_t count, loff_t *ppos,
int (*format)(struct ieee80211_sub_if_data *, char *))
{
char buf[10];
int buf_size;

memset(buf, 0x00, sizeof(buf));
buf_size = min(count, (sizeof(buf)-1));
read_lock(&dev_base_lock);
if (copy_from_user(buf, userbuf, buf_size))
goto endwrite;
if (sdata->dev->reg_state == NETREG_REGISTERED)
(*format)(sdata, buf);
endwrite:
read_unlock(&dev_base_lock);
return count;
}
#endif

#define IEEE80211_IF_FMT(name, field, format_string) \
static ssize_t ieee80211_if_fmt_##name( \
const struct ieee80211_sub_if_data *sdata, char *buf, \
int buflen) \
{ \
return scnprintf(buf, buflen, format_string, sdata->field); \
}
#define IEEE80211_IF_WFMT(name, field, type) \
static int ieee80211_if_wfmt_##name( \
struct ieee80211_sub_if_data *sdata, char *buf) \
{ \
unsigned long tmp; \
char *endp; \
\
tmp = simple_strtoul(buf, &endp, 0); \
if ((endp == buf) || ((type)tmp != tmp)) \
return -EINVAL; \
sdata->field = tmp; \
return 0; \
}
#define IEEE80211_IF_FMT_DEC(name, field) \
IEEE80211_IF_FMT(name, field, "%d\n")
#define IEEE80211_IF_FMT_HEX(name, field) \
Expand Down Expand Up @@ -88,6 +124,34 @@ static const struct file_operations name##_ops = { \
IEEE80211_IF_FMT_##format(name, field) \
__IEEE80211_IF_FILE(name)

#define __IEEE80211_IF_WFILE(name) \
static ssize_t ieee80211_if_read_##name(struct file *file, \
char __user *userbuf, \
size_t count, loff_t *ppos) \
{ \
return ieee80211_if_read(file->private_data, \
userbuf, count, ppos, \
ieee80211_if_fmt_##name); \
} \
static ssize_t ieee80211_if_write_##name(struct file *file, \
const char __user *userbuf, \
size_t count, loff_t *ppos) \
{ \
return ieee80211_if_write(file->private_data, \
userbuf, count, ppos, \
ieee80211_if_wfmt_##name); \
} \
static const struct file_operations name##_ops = { \
.read = ieee80211_if_read_##name, \
.write = ieee80211_if_write_##name, \
.open = mac80211_open_file_generic, \
}

#define IEEE80211_IF_WFILE(name, field, format, type) \
IEEE80211_IF_FMT_##format(name, field) \
IEEE80211_IF_WFMT(name, field, type) \
__IEEE80211_IF_WFILE(name)

/* common attributes */
IEEE80211_IF_FILE(channel_use, channel_use, DEC);
IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
Expand All @@ -106,6 +170,7 @@ IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
IEEE80211_IF_FILE(num_beacons_sta, u.sta.num_beacons, DEC);

static ssize_t ieee80211_if_fmt_flags(
const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
Expand Down Expand Up @@ -139,6 +204,42 @@ __IEEE80211_IF_FILE(num_buffered_multicast);
/* WDS attributes */
IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);

#ifdef CONFIG_MAC80211_MESH
/* Mesh stats attributes */
IEEE80211_IF_FILE(fwded_frames, u.sta.mshstats.fwded_frames, DEC);
IEEE80211_IF_FILE(dropped_frames_ttl, u.sta.mshstats.dropped_frames_ttl, DEC);
IEEE80211_IF_FILE(dropped_frames_no_route,
u.sta.mshstats.dropped_frames_no_route, DEC);
IEEE80211_IF_FILE(estab_plinks, u.sta.mshstats.estab_plinks, ATOMIC);

/* Mesh parameters */
IEEE80211_IF_WFILE(dot11MeshMaxRetries,
u.sta.mshcfg.dot11MeshMaxRetries, DEC, u8);
IEEE80211_IF_WFILE(dot11MeshRetryTimeout,
u.sta.mshcfg.dot11MeshRetryTimeout, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshConfirmTimeout,
u.sta.mshcfg.dot11MeshConfirmTimeout, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHoldingTimeout,
u.sta.mshcfg.dot11MeshHoldingTimeout, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshTTL, u.sta.mshcfg.dot11MeshTTL, DEC, u8);
IEEE80211_IF_WFILE(auto_open_plinks, u.sta.mshcfg.auto_open_plinks, DEC, bool);
IEEE80211_IF_WFILE(dot11MeshMaxPeerLinks,
u.sta.mshcfg.dot11MeshMaxPeerLinks, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHWMPactivePathTimeout,
u.sta.mshcfg.dot11MeshHWMPactivePathTimeout, DEC, u32);
IEEE80211_IF_WFILE(dot11MeshHWMPpreqMinInterval,
u.sta.mshcfg.dot11MeshHWMPpreqMinInterval, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHWMPnetDiameterTraversalTime,
u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHWMPmaxPREQretries,
u.sta.mshcfg.dot11MeshHWMPmaxPREQretries, DEC, u8);
IEEE80211_IF_WFILE(path_refresh_time,
u.sta.mshcfg.path_refresh_time, DEC, u32);
IEEE80211_IF_WFILE(min_discovery_timeout,
u.sta.mshcfg.min_discovery_timeout, DEC, u16);
#endif


#define DEBUGFS_ADD(name, type)\
sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\
sdata->debugfsdir, sdata, &name##_ops);
Expand All @@ -161,6 +262,7 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata)
DEBUGFS_ADD(auth_alg, sta);
DEBUGFS_ADD(auth_transaction, sta);
DEBUGFS_ADD(flags, sta);
DEBUGFS_ADD(num_beacons_sta, sta);
}

static void add_ap_files(struct ieee80211_sub_if_data *sdata)
Expand Down Expand Up @@ -192,12 +294,57 @@ static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
{
}

#ifdef CONFIG_MAC80211_MESH
#define MESHSTATS_ADD(name)\
sdata->mesh_stats.name = debugfs_create_file(#name, 0444,\
sdata->mesh_stats_dir, sdata, &name##_ops);

static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
{
sdata->mesh_stats_dir = debugfs_create_dir("mesh_stats",
sdata->debugfsdir);
MESHSTATS_ADD(fwded_frames);
MESHSTATS_ADD(dropped_frames_ttl);
MESHSTATS_ADD(dropped_frames_no_route);
MESHSTATS_ADD(estab_plinks);
}

#define MESHPARAMS_ADD(name)\
sdata->mesh_config.name = debugfs_create_file(#name, 0644,\
sdata->mesh_config_dir, sdata, &name##_ops);

static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
{
sdata->mesh_config_dir = debugfs_create_dir("mesh_config",
sdata->debugfsdir);
MESHPARAMS_ADD(dot11MeshMaxRetries);
MESHPARAMS_ADD(dot11MeshRetryTimeout);
MESHPARAMS_ADD(dot11MeshConfirmTimeout);
MESHPARAMS_ADD(dot11MeshHoldingTimeout);
MESHPARAMS_ADD(dot11MeshTTL);
MESHPARAMS_ADD(auto_open_plinks);
MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
MESHPARAMS_ADD(path_refresh_time);
MESHPARAMS_ADD(min_discovery_timeout);
}
#endif

static void add_files(struct ieee80211_sub_if_data *sdata)
{
if (!sdata->debugfsdir)
return;

switch (sdata->vif.type) {
case IEEE80211_IF_TYPE_MESH_POINT:
#ifdef CONFIG_MAC80211_MESH
add_mesh_stats(sdata);
add_mesh_config(sdata);
#endif
/* fall through */
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
add_sta_files(sdata);
Expand Down Expand Up @@ -243,6 +390,7 @@ static void del_sta_files(struct ieee80211_sub_if_data *sdata)
DEBUGFS_DEL(auth_alg, sta);
DEBUGFS_DEL(auth_transaction, sta);
DEBUGFS_DEL(flags, sta);
DEBUGFS_DEL(num_beacons_sta, sta);
}

static void del_ap_files(struct ieee80211_sub_if_data *sdata)
Expand Down Expand Up @@ -274,12 +422,61 @@ static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
{
}

#ifdef CONFIG_MAC80211_MESH
#define MESHSTATS_DEL(name) \
do { \
debugfs_remove(sdata->mesh_stats.name); \
sdata->mesh_stats.name = NULL; \
} while (0)

static void del_mesh_stats(struct ieee80211_sub_if_data *sdata)
{
MESHSTATS_DEL(fwded_frames);
MESHSTATS_DEL(dropped_frames_ttl);
MESHSTATS_DEL(dropped_frames_no_route);
MESHSTATS_DEL(estab_plinks);
debugfs_remove(sdata->mesh_stats_dir);
sdata->mesh_stats_dir = NULL;
}

#define MESHPARAMS_DEL(name) \
do { \
debugfs_remove(sdata->mesh_config.name); \
sdata->mesh_config.name = NULL; \
} while (0)

static void del_mesh_config(struct ieee80211_sub_if_data *sdata)
{
MESHPARAMS_DEL(dot11MeshMaxRetries);
MESHPARAMS_DEL(dot11MeshRetryTimeout);
MESHPARAMS_DEL(dot11MeshConfirmTimeout);
MESHPARAMS_DEL(dot11MeshHoldingTimeout);
MESHPARAMS_DEL(dot11MeshTTL);
MESHPARAMS_DEL(auto_open_plinks);
MESHPARAMS_DEL(dot11MeshMaxPeerLinks);
MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout);
MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval);
MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime);
MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries);
MESHPARAMS_DEL(path_refresh_time);
MESHPARAMS_DEL(min_discovery_timeout);
debugfs_remove(sdata->mesh_config_dir);
sdata->mesh_config_dir = NULL;
}
#endif

static void del_files(struct ieee80211_sub_if_data *sdata, int type)
{
if (!sdata->debugfsdir)
return;

switch (type) {
case IEEE80211_IF_TYPE_MESH_POINT:
#ifdef CONFIG_MAC80211_MESH
del_mesh_stats(sdata);
del_mesh_config(sdata);
#endif
/* fall through */
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
del_sta_files(sdata);
Expand Down

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