1 files changed, 115 insertions, 55 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 74150ad95823..25a9e3b5c154 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -4,7 +4,7 @@
  * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
  * Copyright 2013-2014  Intel Mobile Communications GmbH
  * Copyright 2015-2017	Intel Deutschland GmbH
- * Copyright (C) 2018 Intel Corporation
+ * Copyright (C) 2018-2019 Intel Corporation
  */
 
 #include <linux/if.h>
@@ -203,29 +203,17 @@ cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 static int validate_ie_attr(const struct nlattr *attr,
 			    struct netlink_ext_ack *extack)
 {
-	const u8 *pos;
-	int len;
+	const u8 *data = nla_data(attr);
+	unsigned int len = nla_len(attr);
+	const struct element *elem;
 
-	pos = nla_data(attr);
-	len = nla_len(attr);
-
-	while (len) {
-		u8 elemlen;
-
-		if (len < 2)
-			goto error;
-		len -= 2;
-
-		elemlen = pos[1];
-		if (elemlen > len)
-			goto error;
-
-		len -= elemlen;
-		pos += 2 + elemlen;
+	for_each_element(elem, data, len) {
+		/* nothing */
 	}
 
-	return 0;
-error:
+	if (for_each_element_completed(elem, data, len))
+		return 0;
+
 	NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 	return -EINVAL;
 }
@@ -250,7 +238,7 @@ nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 	[NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 		NLA_POLICY_MAX(NLA_U8, 15),
 	[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
-		NLA_POLICY_MAX(NLA_U8, 15),
+		NLA_POLICY_MAX(NLA_U8, 31),
 	[NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 	[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 	[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
@@ -259,15 +247,13 @@ nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 static const struct nla_policy
 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 	[NL80211_PMSR_TYPE_FTM] =
-		NLA_POLICY_NESTED(NL80211_PMSR_FTM_REQ_ATTR_MAX,
-				  nl80211_pmsr_ftm_req_attr_policy),
+		NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 };
 
 static const struct nla_policy
 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 	[NL80211_PMSR_REQ_ATTR_DATA] =
-		NLA_POLICY_NESTED(NL80211_PMSR_TYPE_MAX,
-				  nl80211_pmsr_req_data_policy),
+		NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 	[NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 };
 
@@ -280,8 +266,7 @@ nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 	 */
 	[NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 	[NL80211_PMSR_PEER_ATTR_REQ] =
-		NLA_POLICY_NESTED(NL80211_PMSR_REQ_ATTR_MAX,
-				  nl80211_pmsr_req_attr_policy),
+		NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 	[NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 };
 
@@ -292,8 +277,7 @@ nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 	[NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 	[NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 	[NL80211_PMSR_ATTR_PEERS] =
-		NLA_POLICY_NESTED_ARRAY(NL80211_PMSR_PEER_ATTR_MAX,
-					nl80211_psmr_peer_attr_policy),
+		NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 };
 
 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
@@ -555,8 +539,8 @@ const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 	},
 	[NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 	[NL80211_ATTR_PEER_MEASUREMENTS] =
-		NLA_POLICY_NESTED(NL80211_PMSR_ATTR_MAX,
-				  nl80211_pmsr_attr_policy),
+		NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
+	[NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 };
 
 /* policy for the key attributes */
@@ -2278,6 +2262,15 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
 		if (nl80211_send_pmsr_capa(rdev, msg))
 			goto nla_put_failure;
 
+		state->split_start++;
+		break;
+	case 15:
+		if (rdev->wiphy.akm_suites &&
+		    nla_put(msg, NL80211_ATTR_AKM_SUITES,
+			    sizeof(u32) * rdev->wiphy.n_akm_suites,
+			    rdev->wiphy.akm_suites))
+			goto nla_put_failure;
+
 		/* done */
 		state->split_start = 0;
 		break;
@@ -4540,6 +4533,9 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
 
 	nl80211_calculate_ap_params(&params);
 
+	if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
+		params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
+
 	wdev_lock(wdev);
 	err = rdev_start_ap(rdev, dev, &params);
 	if (!err) {
@@ -4851,6 +4847,11 @@ static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
 	PUT_SINFO(PLID, plid, u16);
 	PUT_SINFO(PLINK_STATE, plink_state, u8);
 	PUT_SINFO_U64(RX_DURATION, rx_duration);
+	PUT_SINFO_U64(TX_DURATION, tx_duration);
+
+	if (wiphy_ext_feature_isset(&rdev->wiphy,
+				    NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
+		PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
 
 	switch (rdev->wiphy.signal_type) {
 	case CFG80211_SIGNAL_TYPE_MBM:
@@ -5470,6 +5471,15 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
 			nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
 	}
 
+	if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
+		params.airtime_weight =
+			nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
+
+	if (params.airtime_weight &&
+	    !wiphy_ext_feature_isset(&rdev->wiphy,
+				     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
+		return -EOPNOTSUPP;
+
 	/* Include parameters for TDLS peer (will check later) */
 	err = nl80211_set_station_tdls(info, &params);
 	if (err)
@@ -5598,6 +5608,15 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
 		params.plink_action =
 			nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
 
+	if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
+		params.airtime_weight =
+			nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
+
+	if (params.airtime_weight &&
+	    !wiphy_ext_feature_isset(&rdev->wiphy,
+				     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
+		return -EOPNOTSUPP;
+
 	err = nl80211_parse_sta_channel_info(info, &params);
 	if (err)
 		return err;
@@ -5803,7 +5822,13 @@ static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
 			 pinfo->discovery_timeout)) ||
 	    ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
 	     nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
-			pinfo->discovery_retries)))
+			pinfo->discovery_retries)) ||
+	    ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
+	     nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
+			pinfo->hop_count)) ||
+	    ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
+	     nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
+			 pinfo->path_change_count)))
 		goto nla_put_failure;
 
 	nla_nest_end(msg, pinfoattr);
@@ -9281,6 +9306,7 @@ struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
 					   struct wireless_dev *wdev,
 					   enum nl80211_commands cmd,
 					   enum nl80211_attrs attr,
+					   unsigned int portid,
 					   int vendor_event_idx,
 					   int approxlen, gfp_t gfp)
 {
@@ -9304,7 +9330,7 @@ struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
 		return NULL;
 	}
 
-	return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
+	return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
 					   cmd, attr, info, gfp);
 }
 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
@@ -9313,6 +9339,7 @@ void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
 {
 	struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
 	void *hdr = ((void **)skb->cb)[1];
+	struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
 	struct nlattr *data = ((void **)skb->cb)[2];
 	enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
 
@@ -9322,11 +9349,16 @@ void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
 	nla_nest_end(skb, data);
 	genlmsg_end(skb, hdr);
 
-	if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
-		mcgrp = NL80211_MCGRP_VENDOR;
+	if (nlhdr->nlmsg_pid) {
+		genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
+				nlhdr->nlmsg_pid);
+	} else {
+		if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
+			mcgrp = NL80211_MCGRP_VENDOR;
 
-	genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
-				mcgrp, gfp);
+		genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
+					skb, 0, mcgrp, gfp);
+	}
 }
 EXPORT_SYMBOL(__cfg80211_send_event_skb);
 
@@ -9857,7 +9889,10 @@ static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
 	}
 
 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
-	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
+	    !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
+	      wiphy_ext_feature_isset(&rdev->wiphy,
+				      NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
 		return -EOPNOTSUPP;
 
 	switch (info->genlhdr->cmd) {
@@ -12708,6 +12743,17 @@ int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
 }
 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
 
+unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+
+	if (WARN_ON(!rdev->cur_cmd_info))
+		return 0;
+
+	return rdev->cur_cmd_info->snd_portid;
+}
+EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
+
 static int nl80211_set_qos_map(struct sk_buff *skb,
 			       struct genl_info *info)
 {
@@ -13047,7 +13093,9 @@ static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
 	if (!rdev->ops->external_auth)
 		return -EOPNOTSUPP;
 
-	if (!info->attrs[NL80211_ATTR_SSID])
+	if (!info->attrs[NL80211_ATTR_SSID] &&
+	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
+	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
 		return -EINVAL;
 
 	if (!info->attrs[NL80211_ATTR_BSSID])
@@ -13058,18 +13106,24 @@ static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
 
 	memset(&params, 0, sizeof(params));
 
-	params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
-	if (params.ssid.ssid_len == 0 ||
-	    params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
-		return -EINVAL;
-	memcpy(params.ssid.ssid, nla_data(info->attrs[NL80211_ATTR_SSID]),
-	       params.ssid.ssid_len);
+	if (info->attrs[NL80211_ATTR_SSID]) {
+		params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
+		if (params.ssid.ssid_len == 0 ||
+		    params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
+			return -EINVAL;
+		memcpy(params.ssid.ssid,
+		       nla_data(info->attrs[NL80211_ATTR_SSID]),
+		       params.ssid.ssid_len);
+	}
 
 	memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
 	       ETH_ALEN);
 
 	params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
 
+	if (info->attrs[NL80211_ATTR_PMKID])
+		params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
+
 	return rdev_external_auth(rdev, dev, &params);
 }
 
@@ -14455,12 +14509,13 @@ static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
 				    struct net_device *netdev,
 				    const u8 *buf, size_t len,
 				    enum nl80211_commands cmd, gfp_t gfp,
-				    int uapsd_queues)
+				    int uapsd_queues, const u8 *req_ies,
+				    size_t req_ies_len)
 {
 	struct sk_buff *msg;
 	void *hdr;
 
-	msg = nlmsg_new(100 + len, gfp);
+	msg = nlmsg_new(100 + len + req_ies_len, gfp);
 	if (!msg)
 		return;
 
@@ -14472,7 +14527,9 @@ static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
 
 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
-	    nla_put(msg, NL80211_ATTR_FRAME, len, buf))
+	    nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
+	    (req_ies &&
+	     nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
 		goto nla_put_failure;
 
 	if (uapsd_queues >= 0) {
@@ -14503,15 +14560,17 @@ void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
 			  size_t len, gfp_t gfp)
 {
 	nl80211_send_mlme_event(rdev, netdev, buf, len,
-				NL80211_CMD_AUTHENTICATE, gfp, -1);
+				NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
 }
 
 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
 			   struct net_device *netdev, const u8 *buf,
-			   size_t len, gfp_t gfp, int uapsd_queues)
+			   size_t len, gfp_t gfp, int uapsd_queues,
+			   const u8 *req_ies, size_t req_ies_len)
 {
 	nl80211_send_mlme_event(rdev, netdev, buf, len,
-				NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
+				NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
+				req_ies, req_ies_len);
 }
 
 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
@@ -14519,7 +14578,7 @@ void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
 			 size_t len, gfp_t gfp)
 {
 	nl80211_send_mlme_event(rdev, netdev, buf, len,
-				NL80211_CMD_DEAUTHENTICATE, gfp, -1);
+				NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
 }
 
 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
@@ -14527,7 +14586,7 @@ void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
 			   size_t len, gfp_t gfp)
 {
 	nl80211_send_mlme_event(rdev, netdev, buf, len,
-				NL80211_CMD_DISASSOCIATE, gfp, -1);
+				NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
 }
 
 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
@@ -14548,7 +14607,8 @@ void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
 		cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
 
 	trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
-	nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
+	nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
+				NULL, 0);
 }
 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);