Commit 6abb9cb9 authored by Johannes Berg's avatar Johannes Berg
Browse files

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: default avatarJohannes Berg <johannes.berg@intel.com>
parent 83739b03

include/net/cfg80211.h

+4 −0
Original line number Diff line number Diff line
@@ -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;

net/wireless/core.c

+3 −1
Original line number Diff line number Diff line
@@ -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);

net/wireless/core.h

+11 −10
Original line number Diff line number Diff line
@@ -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;

net/wireless/nl80211.c

+28 −25
Original line number Diff line number Diff line
@@ -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:

net/wireless/sysfs.c

+6 −2
Original line number Diff line number Diff line
@@ -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,

};

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