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cfg80211: make WoWLAN configuration available to drivers 

Make the current WoWLAN configuration available to drivers
at runtime. This isn't really useful for the normal WoWLAN
behaviour and accessing it can also be racy, but drivers
may use it for testing the WoWLAN device behaviour while
the host stays up & running to observe the device.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2013-05-15 09:30:07 +02:00
parent 83739b03de
commit 6abb9cb99f
5 changed files with 52 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/net/cfg80211.h
View File

@ -2583,6 +2583,9 @@ struct wiphy_wowlan_support {
* may request, if implemented.
*
* @wowlan: WoWLAN support information
* @wowlan_config: current WoWLAN configuration; this should usually not be
* used since access to it is necessarily racy, use the parameter passed
* to the suspend() operation instead.
*
* @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features.
* @ht_capa_mod_mask: Specify what ht_cap values can be over-ridden.
@ -2650,6 +2653,7 @@ struct wiphy {
#ifdef CONFIG_PM
struct wiphy_wowlan_support wowlan;
struct cfg80211_wowlan *wowlan_config;
#endif
u16 max_remain_on_channel_duration;

4
net/wireless/core.c
View File

@ -663,8 +663,10 @@ void wiphy_unregister(struct wiphy *wiphy)
flush_work(&rdev->event_work);
cancel_delayed_work_sync(&rdev->dfs_update_channels_wk);
if (rdev->wowlan && rdev->ops->set_wakeup)
#ifdef CONFIG_PM
if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup)
rdev_set_wakeup(rdev, false);
#endif
cfg80211_rdev_free_wowlan(rdev);
}
EXPORT_SYMBOL(wiphy_unregister);

21
net/wireless/core.h
View File

@ -74,8 +74,6 @@ struct cfg80211_registered_device {
struct work_struct conn_work;
struct work_struct event_work;
struct cfg80211_wowlan *wowlan;
struct delayed_work dfs_update_channels_wk;
/* netlink port which started critical protocol (0 means not started) */
@ -96,17 +94,20 @@ struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
static inline void
cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
{
#ifdef CONFIG_PM
int i;
if (!rdev->wowlan)
if (!rdev->wiphy.wowlan_config)
return;
for (i = 0; i < rdev->wowlan->n_patterns; i++)
kfree(rdev->wowlan->patterns[i].mask);
kfree(rdev->wowlan->patterns);
if (rdev->wowlan->tcp && rdev->wowlan->tcp->sock)
sock_release(rdev->wowlan->tcp->sock);
kfree(rdev->wowlan->tcp);
kfree(rdev->wowlan);
for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
kfree(rdev->wiphy.wowlan_config->patterns);
if (rdev->wiphy.wowlan_config->tcp &&
rdev->wiphy.wowlan_config->tcp->sock)
sock_release(rdev->wiphy.wowlan_config->tcp->sock);
kfree(rdev->wiphy.wowlan_config->tcp);
kfree(rdev->wiphy.wowlan_config);
#endif
}
extern struct workqueue_struct *cfg80211_wq;

53
net/wireless/nl80211.c
View File

@ -7489,28 +7489,29 @@ static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
struct cfg80211_registered_device *rdev)
{
struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
struct nlattr *nl_pats, *nl_pat;
int i, pat_len;
if (!rdev->wowlan->n_patterns)
if (!wowlan->n_patterns)
return 0;
nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
if (!nl_pats)
return -ENOBUFS;
for (i = 0; i < rdev->wowlan->n_patterns; i++) {
for (i = 0; i < wowlan->n_patterns; i++) {
nl_pat = nla_nest_start(msg, i + 1);
if (!nl_pat)
return -ENOBUFS;
pat_len = rdev->wowlan->patterns[i].pattern_len;
pat_len = wowlan->patterns[i].pattern_len;
if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
DIV_ROUND_UP(pat_len, 8),
rdev->wowlan->patterns[i].mask) ||
wowlan->patterns[i].mask) ||
nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
pat_len, rdev->wowlan->patterns[i].pattern) ||
pat_len, wowlan->patterns[i].pattern) ||
nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
rdev->wowlan->patterns[i].pkt_offset))
wowlan->patterns[i].pkt_offset))
return -ENOBUFS;
nla_nest_end(msg, nl_pat);
}
@ -7573,12 +7574,12 @@ static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
!rdev->wiphy.wowlan.tcp)
return -EOPNOTSUPP;
if (rdev->wowlan && rdev->wowlan->tcp) {
if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
/* adjust size to have room for all the data */
size += rdev->wowlan->tcp->tokens_size +
rdev->wowlan->tcp->payload_len +
rdev->wowlan->tcp->wake_len +
rdev->wowlan->tcp->wake_len / 8;
size += rdev->wiphy.wowlan_config->tcp->tokens_size +
rdev->wiphy.wowlan_config->tcp->payload_len +
rdev->wiphy.wowlan_config->tcp->wake_len +
rdev->wiphy.wowlan_config->tcp->wake_len / 8;
}
msg = nlmsg_new(size, GFP_KERNEL);
@ -7590,33 +7591,34 @@ static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
if (!hdr)
goto nla_put_failure;
if (rdev->wowlan) {
if (rdev->wiphy.wowlan_config) {
struct nlattr *nl_wowlan;
nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
if (!nl_wowlan)
goto nla_put_failure;
if ((rdev->wowlan->any &&
if ((rdev->wiphy.wowlan_config->any &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
(rdev->wowlan->disconnect &&
(rdev->wiphy.wowlan_config->disconnect &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
(rdev->wowlan->magic_pkt &&
(rdev->wiphy.wowlan_config->magic_pkt &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
(rdev->wowlan->gtk_rekey_failure &&
(rdev->wiphy.wowlan_config->gtk_rekey_failure &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
(rdev->wowlan->eap_identity_req &&
(rdev->wiphy.wowlan_config->eap_identity_req &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
(rdev->wowlan->four_way_handshake &&
(rdev->wiphy.wowlan_config->four_way_handshake &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
(rdev->wowlan->rfkill_release &&
(rdev->wiphy.wowlan_config->rfkill_release &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
goto nla_put_failure;
if (nl80211_send_wowlan_patterns(msg, rdev))
goto nla_put_failure;
if (nl80211_send_wowlan_tcp(msg, rdev->wowlan->tcp))
if (nl80211_send_wowlan_tcp(msg,
rdev->wiphy.wowlan_config->tcp))
goto nla_put_failure;
nla_nest_end(msg, nl_wowlan);
@ -7783,7 +7785,7 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
struct cfg80211_wowlan *ntrig;
struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
int err, i;
bool prev_enabled = rdev->wowlan;
bool prev_enabled = rdev->wiphy.wowlan_config;
if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
!rdev->wiphy.wowlan.tcp)
@ -7791,7 +7793,7 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
cfg80211_rdev_free_wowlan(rdev);
rdev->wowlan = NULL;
rdev->wiphy.wowlan_config = NULL;
goto set_wakeup;
}
@ -7927,11 +7929,12 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
goto error;
}
cfg80211_rdev_free_wowlan(rdev);
rdev->wowlan = ntrig;
rdev->wiphy.wowlan_config = ntrig;
set_wakeup:
if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
rdev_set_wakeup(rdev, rdev->wowlan);
if (rdev->ops->set_wakeup &&
prev_enabled != !!rdev->wiphy.wowlan_config)
rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
return 0;
error:

8
net/wireless/sysfs.c
View File

@ -91,6 +91,7 @@ static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
cfg80211_leave(rdev, wdev);
}
#ifdef CONFIG_PM
static int wiphy_suspend(struct device *dev, pm_message_t state)
{
struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
@ -100,10 +101,10 @@ static int wiphy_suspend(struct device *dev, pm_message_t state)
rtnl_lock();
if (rdev->wiphy.registered) {
if (!rdev->wowlan)
if (!rdev->wiphy.wowlan_config)
cfg80211_leave_all(rdev);
if (rdev->ops->suspend)
ret = rdev_suspend(rdev, rdev->wowlan);
ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config);
if (ret == 1) {
/* Driver refuse to configure wowlan */
cfg80211_leave_all(rdev);
@ -132,6 +133,7 @@ static int wiphy_resume(struct device *dev)
return ret;
}
#endif
static const void *wiphy_namespace(struct device *d)
{
@ -146,8 +148,10 @@ struct class ieee80211_class = {
.dev_release = wiphy_dev_release,
.dev_attrs = ieee80211_dev_attrs,
.dev_uevent = wiphy_uevent,
#ifdef CONFIG_PM
.suspend = wiphy_suspend,
.resume = wiphy_resume,
#endif
.ns_type = &net_ns_type_operations,
.namespace = wiphy_namespace,
};