X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=net%2Fwireless%2Fnl80211.c;h=13ef553b99d463b58d191db2642838bafcffaca4;hb=57fbcce37be7c1d2622b56587c10ade00e96afa3;hp=98c924260b3d312055c598255cff8478bccba1e9;hpb=73659be769a4f0ac26a6b3fc6699754adba36485;p=deliverable%2Flinux.git

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 98c924260b3d..13ef553b99d4 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -402,6 +402,8 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 	[NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 	[NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 	[NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
+	[NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
+	[NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
 };
 
 /* policy for the key attributes */
@@ -486,6 +488,15 @@ nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 	[NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 };
 
+static const struct nla_policy
+nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
+	[NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
+	[NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
+	[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
+		.len = sizeof(struct nl80211_bss_select_rssi_adjust)
+	},
+};
+
 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 				     struct netlink_callback *cb,
 				     struct cfg80211_registered_device **rdev,
@@ -1266,7 +1277,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
 	struct nlattr *nl_bands, *nl_band;
 	struct nlattr *nl_freqs, *nl_freq;
 	struct nlattr *nl_cmds;
-	enum ieee80211_band band;
+	enum nl80211_band band;
 	struct ieee80211_channel *chan;
 	int i;
 	const struct ieee80211_txrx_stypes *mgmt_stypes =
@@ -1399,7 +1410,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
 			goto nla_put_failure;
 
 		for (band = state->band_start;
-		     band < IEEE80211_NUM_BANDS; band++) {
+		     band < NUM_NL80211_BANDS; band++) {
 			struct ieee80211_supported_band *sband;
 
 			sband = rdev->wiphy.bands[band];
@@ -1461,7 +1472,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
 		}
 		nla_nest_end(msg, nl_bands);
 
-		if (band < IEEE80211_NUM_BANDS)
+		if (band < NUM_NL80211_BANDS)
 			state->band_start = band + 1;
 		else
 			state->band_start = 0;
@@ -1731,6 +1742,25 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
 			    rdev->wiphy.ext_features))
 			goto nla_put_failure;
 
+		if (rdev->wiphy.bss_select_support) {
+			struct nlattr *nested;
+			u32 bss_select_support = rdev->wiphy.bss_select_support;
+
+			nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
+			if (!nested)
+				goto nla_put_failure;
+
+			i = 0;
+			while (bss_select_support) {
+				if ((bss_select_support & 1) &&
+				    nla_put_flag(msg, i))
+					goto nla_put_failure;
+				i++;
+				bss_select_support >>= 1;
+			}
+			nla_nest_end(msg, nested);
+		}
+
 		/* done */
 		state->split_start = 0;
 		break;
@@ -3463,7 +3493,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
 	}
 
 	params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
-	if (params.pbss && !rdev->wiphy.bands[IEEE80211_BAND_60GHZ])
+	if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
 		return -EOPNOTSUPP;
 
 	wdev_lock(wdev);
@@ -3977,6 +4007,10 @@ int cfg80211_check_station_change(struct wiphy *wiphy,
 	    statype != CFG80211_STA_AP_CLIENT_UNASSOC)
 		return -EINVAL;
 
+	if (params->support_p2p_ps != -1 &&
+	    statype != CFG80211_STA_AP_CLIENT_UNASSOC)
+		return -EINVAL;
+
 	if (params->aid &&
 	    !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
 	    statype != CFG80211_STA_AP_CLIENT_UNASSOC)
@@ -4270,6 +4304,18 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
 	else
 		params.listen_interval = -1;
 
+	if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
+		u8 tmp;
+
+		tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
+		if (tmp >= NUM_NL80211_P2P_PS_STATUS)
+			return -EINVAL;
+
+		params.support_p2p_ps = tmp;
+	} else {
+		params.support_p2p_ps = -1;
+	}
+
 	if (!info->attrs[NL80211_ATTR_MAC])
 		return -EINVAL;
 
@@ -4393,6 +4439,23 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
 	params.listen_interval =
 		nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
 
+	if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
+		u8 tmp;
+
+		tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
+		if (tmp >= NUM_NL80211_P2P_PS_STATUS)
+			return -EINVAL;
+
+		params.support_p2p_ps = tmp;
+	} else {
+		/*
+		 * if not specified, assume it's supported for P2P GO interface,
+		 * and is NOT supported for AP interface
+		 */
+		params.support_p2p_ps =
+			dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
+	}
+
 	if (info->attrs[NL80211_ATTR_PEER_AID])
 		params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
 	else
@@ -5758,6 +5821,73 @@ static int validate_scan_freqs(struct nlattr *freqs)
 	return n_channels;
 }
 
+static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
+{
+	return b < NUM_NL80211_BANDS && wiphy->bands[b];
+}
+
+static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
+			    struct cfg80211_bss_selection *bss_select)
+{
+	struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
+	struct nlattr *nest;
+	int err;
+	bool found = false;
+	int i;
+
+	/* only process one nested attribute */
+	nest = nla_data(nla);
+	if (!nla_ok(nest, nla_len(nest)))
+		return -EINVAL;
+
+	err = nla_parse(attr, NL80211_BSS_SELECT_ATTR_MAX, nla_data(nest),
+			nla_len(nest), nl80211_bss_select_policy);
+	if (err)
+		return err;
+
+	/* only one attribute may be given */
+	for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
+		if (attr[i]) {
+			if (found)
+				return -EINVAL;
+			found = true;
+		}
+	}
+
+	bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
+
+	if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
+		bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
+
+	if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
+		bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
+		bss_select->param.band_pref =
+			nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
+		if (!is_band_valid(wiphy, bss_select->param.band_pref))
+			return -EINVAL;
+	}
+
+	if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
+		struct nl80211_bss_select_rssi_adjust *adj_param;
+
+		adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
+		bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
+		bss_select->param.adjust.band = adj_param->band;
+		bss_select->param.adjust.delta = adj_param->delta;
+		if (!is_band_valid(wiphy, bss_select->param.adjust.band))
+			return -EINVAL;
+	}
+
+	/* user-space did not provide behaviour attribute */
+	if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
+		return -EINVAL;
+
+	if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
+		return -EINVAL;
+
+	return 0;
+}
+
 static int nl80211_parse_random_mac(struct nlattr **attrs,
 				    u8 *mac_addr, u8 *mac_addr_mask)
 {
@@ -5888,10 +6018,10 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 			i++;
 		}
 	} else {
-		enum ieee80211_band band;
+		enum nl80211_band band;
 
 		/* all channels */
-		for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+		for (band = 0; band < NUM_NL80211_BANDS; band++) {
 			int j;
 			if (!wiphy->bands[band])
 				continue;
@@ -5936,7 +6066,7 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 		       request->ie_len);
 	}
 
-	for (i = 0; i < IEEE80211_NUM_BANDS; i++)
+	for (i = 0; i < NUM_NL80211_BANDS; i++)
 		if (wiphy->bands[i])
 			request->rates[i] =
 				(1 << wiphy->bands[i]->n_bitrates) - 1;
@@ -5945,9 +6075,9 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 		nla_for_each_nested(attr,
 				    info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
 				    tmp) {
-			enum ieee80211_band band = nla_type(attr);
+			enum nl80211_band band = nla_type(attr);
 
-			if (band < 0 || band >= IEEE80211_NUM_BANDS) {
+			if (band < 0 || band >= NUM_NL80211_BANDS) {
 				err = -EINVAL;
 				goto out_free;
 			}
@@ -5996,6 +6126,12 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
 	request->no_cck =
 		nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
 
+	if (info->attrs[NL80211_ATTR_MAC])
+		memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
+		       ETH_ALEN);
+	else
+		eth_broadcast_addr(request->bssid);
+
 	request->wdev = wdev;
 	request->wiphy = &rdev->wiphy;
 	request->scan_start = jiffies;
@@ -6129,7 +6265,7 @@ nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
 	struct cfg80211_sched_scan_request *request;
 	struct nlattr *attr;
 	int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
-	enum ieee80211_band band;
+	enum nl80211_band band;
 	size_t ie_len;
 	struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
 	s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
@@ -6294,7 +6430,7 @@ nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
 		}
 	} else {
 		/* all channels */
-		for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+		for (band = 0; band < NUM_NL80211_BANDS; band++) {
 			int j;
 			if (!wiphy->bands[band])
 				continue;
@@ -7402,14 +7538,14 @@ static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
 
 static bool
 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
-			 int mcast_rate[IEEE80211_NUM_BANDS],
+			 int mcast_rate[NUM_NL80211_BANDS],
 			 int rateval)
 {
 	struct wiphy *wiphy = &rdev->wiphy;
 	bool found = false;
 	int band, i;
 
-	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+	for (band = 0; band < NUM_NL80211_BANDS; band++) {
 		struct ieee80211_supported_band *sband;
 
 		sband = wiphy->bands[band];
@@ -7589,7 +7725,7 @@ static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
 {
 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
 	struct net_device *dev = info->user_ptr[1];
-	int mcast_rate[IEEE80211_NUM_BANDS];
+	int mcast_rate[NUM_NL80211_BANDS];
 	u32 nla_rate;
 	int err;
 
@@ -7922,6 +8058,10 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
 		connect.mfp = NL80211_MFP_NO;
 	}
 
+	if (info->attrs[NL80211_ATTR_PREV_BSSID])
+		connect.prev_bssid =
+			nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
+
 	if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
 		connect.channel = nl80211_get_valid_chan(
 			wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
@@ -7990,13 +8130,29 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
 	}
 
 	connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
-	if (connect.pbss && !rdev->wiphy.bands[IEEE80211_BAND_60GHZ]) {
+	if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
 		kzfree(connkeys);
 		return -EOPNOTSUPP;
 	}
 
+	if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
+		/* bss selection makes no sense if bssid is set */
+		if (connect.bssid) {
+			kzfree(connkeys);
+			return -EINVAL;
+		}
+
+		err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
+				       wiphy, &connect.bss_select);
+		if (err) {
+			kzfree(connkeys);
+			return err;
+		}
+	}
+
 	wdev_lock(dev->ieee80211_ptr);
-	err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
+	err = cfg80211_connect(rdev, dev, &connect, connkeys,
+			       connect.prev_bssid);
 	wdev_unlock(dev->ieee80211_ptr);
 	if (err)
 		kzfree(connkeys);
@@ -8394,7 +8550,7 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
 
 	memset(&mask, 0, sizeof(mask));
 	/* Default to all rates enabled */
-	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
+	for (i = 0; i < NUM_NL80211_BANDS; i++) {
 		sband = rdev->wiphy.bands[i];
 
 		if (!sband)
@@ -8418,14 +8574,14 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
 
 	/*
 	 * The nested attribute uses enum nl80211_band as the index. This maps
-	 * directly to the enum ieee80211_band values used in cfg80211.
+	 * directly to the enum nl80211_band values used in cfg80211.
 	 */
 	BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
 	nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
-		enum ieee80211_band band = nla_type(tx_rates);
+		enum nl80211_band band = nla_type(tx_rates);
 		int err;
 
-		if (band < 0 || band >= IEEE80211_NUM_BANDS)
+		if (band < 0 || band >= NUM_NL80211_BANDS)
 			return -EINVAL;
 		sband = rdev->wiphy.bands[band];
 		if (sband == NULL)
@@ -10590,7 +10746,7 @@ static int nl80211_tdls_channel_switch(struct sk_buff *skb,
 	 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
 	 * specification is not defined for them.
 	 */
-	if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
+	if (chandef.chan->band == NL80211_BAND_2GHZ &&
 	    chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
 	    chandef.width != NL80211_CHAN_WIDTH_20)
 		return -EINVAL;