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>

1 files changed, 28 insertions, 25 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index a09f36b..fb6abcb 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -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: