Commit 34d50519 authored by Lior David's avatar Lior David Committed by Johannes Berg
Browse files

cfg80211: basic support for PBSS network type 



PBSS (Personal Basic Service Set) is a new BSS type for DMG
networks. It is similar to infrastructure BSS, having an AP-like
entity called PCP (PBSS Control Point), but it has few differences.
PBSS support is mandatory for 11ad devices.

Add support for PBSS by introducing a new PBSS flag attribute.
The PBSS flag is used in the START_AP command to request starting
a PCP instead of an AP, and in the CONNECT command to request
connecting to a PCP instead of an AP.

Signed-off-by: default avatarLior David <liord@codeaurora.org>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 230fd28a

drivers/net/wireless/ath/wil6210/cfg80211.c

+10 −0
Original line number Diff line number Diff line
@@ -422,6 +422,11 @@ static int wil_cfg80211_connect(struct wiphy *wiphy, 
	if (sme->privacy && !rsn_eid)

		wil_info(wil, "WSC connection\n");



	if (sme->pbss) {

		wil_err(wil, "connect - PBSS not yet supported\n");

		return -EOPNOTSUPP;

	}



	bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,

			       sme->ssid, sme->ssid_len,

			       IEEE80211_BSS_TYPE_ESS, IEEE80211_PRIVACY_ANY);
@@ -870,6 +875,11 @@ static int wil_cfg80211_start_ap(struct wiphy *wiphy, 
		return -EINVAL;

	}



	if (info->pbss) {

		wil_err(wil, "AP: PBSS not yet supported\n");

		return -EOPNOTSUPP;

	}



	switch (info->hidden_ssid) {

	case NL80211_HIDDEN_SSID_NOT_IN_USE:

		hidden_ssid = WMI_HIDDEN_SSID_DISABLED;

include/net/cfg80211.h

+8 −0
Original line number Diff line number Diff line
@@ -712,6 +712,8 @@ struct cfg80211_acl_data { 
 * @p2p_opp_ps: P2P opportunistic PS

 * @acl: ACL configuration used by the drivers which has support for

 *	MAC address based access control

 * @pbss: If set, start as a PCP instead of AP. Relevant for DMG

 *	networks.

 */

struct cfg80211_ap_settings {

	struct cfg80211_chan_def chandef;
@@ -730,6 +732,7 @@ struct cfg80211_ap_settings { 
	u8 p2p_ctwindow;

	bool p2p_opp_ps;

	const struct cfg80211_acl_data *acl;

	bool pbss;

};



/**
@@ -1888,6 +1891,8 @@ struct cfg80211_ibss_params { 
 * @ht_capa_mask:  The bits of ht_capa which are to be used.

 * @vht_capa:  VHT Capability overrides

 * @vht_capa_mask: The bits of vht_capa which are to be used.

 * @pbss: if set, connect to a PCP instead of AP. Valid for DMG

 *	networks.

 */

struct cfg80211_connect_params {

	struct ieee80211_channel *channel;
@@ -1910,6 +1915,7 @@ struct cfg80211_connect_params { 
	struct ieee80211_ht_cap ht_capa_mask;

	struct ieee80211_vht_cap vht_capa;

	struct ieee80211_vht_cap vht_capa_mask;

	bool pbss;

};



/**
@@ -3489,6 +3495,7 @@ struct cfg80211_cached_keys; 
 *	registered for unexpected class 3 frames (AP mode)

 * @conn: (private) cfg80211 software SME connection state machine data

 * @connect_keys: (private) keys to set after connection is established

 * @conn_bss_type: connecting/connected BSS type

 * @ibss_fixed: (private) IBSS is using fixed BSSID

 * @ibss_dfs_possible: (private) IBSS may change to a DFS channel

 * @event_list: (private) list for internal event processing
@@ -3519,6 +3526,7 @@ struct wireless_dev { 
	u8 ssid_len, mesh_id_len, mesh_id_up_len;

	struct cfg80211_conn *conn;

	struct cfg80211_cached_keys *connect_keys;

	enum ieee80211_bss_type conn_bss_type;



	struct list_head event_list;

	spinlock_t event_lock;

include/uapi/linux/nl80211.h

+6 −0
Original line number Diff line number Diff line
@@ -1789,6 +1789,10 @@ enum nl80211_commands { 
 *	thus it must not specify the number of iterations, only the interval

 *	between scans. The scan plans are executed sequentially.

 *	Each scan plan is a nested attribute of &enum nl80211_sched_scan_plan.

 * @NL80211_ATTR_PBSS: flag attribute. If set it means operate

 *	in a PBSS. Specified in %NL80211_CMD_CONNECT to request

 *	connecting to a PCP, and in %NL80211_CMD_START_AP to start

 *	a PCP instead of AP. Relevant for DMG networks only.

 *

 * @NUM_NL80211_ATTR: total number of nl80211_attrs available

 * @NL80211_ATTR_MAX: highest attribute number currently defined
@@ -2164,6 +2168,8 @@ enum nl80211_attrs { 
	NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,

	NL80211_ATTR_SCHED_SCAN_PLANS,



	NL80211_ATTR_PBSS,



	/* add attributes here, update the policy in nl80211.c */



	__NL80211_ATTR_AFTER_LAST,

net/wireless/nl80211.c

+11 −0
Original line number Diff line number Diff line
@@ -401,6 +401,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 
	[NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },

	[NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },

	[NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },

	[NL80211_ATTR_PBSS] = { .type = NLA_FLAG },

};



/* policy for the key attributes */
@@ -3461,6 +3462,10 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 
			return PTR_ERR(params.acl);

	}



	params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);

	if (params.pbss && !rdev->wiphy.bands[IEEE80211_BAND_60GHZ])

		return -EOPNOTSUPP;



	wdev_lock(wdev);

	err = rdev_start_ap(rdev, dev, &params);

	if (!err) {
@@ -7980,6 +7985,12 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 
		connect.flags |= ASSOC_REQ_USE_RRM;

	}



	connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);

	if (connect.pbss && !rdev->wiphy.bands[IEEE80211_BAND_60GHZ]) {

		kzfree(connkeys);

		return -EOPNOTSUPP;

	}



	wdev_lock(dev->ieee80211_ptr);

	err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);

	wdev_unlock(dev->ieee80211_ptr);

net/wireless/sme.c

+6 −3
Original line number Diff line number Diff line
@@ -264,7 +264,7 @@ static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev) 
			       wdev->conn->params.bssid,

			       wdev->conn->params.ssid,

			       wdev->conn->params.ssid_len,

			       IEEE80211_BSS_TYPE_ESS,

			       wdev->conn_bss_type,

			       IEEE80211_PRIVACY(wdev->conn->params.privacy));

	if (!bss)

		return NULL;
@@ -687,7 +687,7 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 
		WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect);

		bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,

				       wdev->ssid, wdev->ssid_len,

				       IEEE80211_BSS_TYPE_ESS,

				       wdev->conn_bss_type,

				       IEEE80211_PRIVACY_ANY);

		if (bss)

			cfg80211_hold_bss(bss_from_pub(bss));
@@ -846,7 +846,7 @@ void cfg80211_roamed(struct net_device *dev, 


	bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,

			       wdev->ssid_len,

			       IEEE80211_BSS_TYPE_ESS, IEEE80211_PRIVACY_ANY);

			       wdev->conn_bss_type, IEEE80211_PRIVACY_ANY);

	if (WARN_ON(!bss))

		return;
@@ -1017,6 +1017,9 @@ int cfg80211_connect(struct cfg80211_registered_device *rdev, 
	memcpy(wdev->ssid, connect->ssid, connect->ssid_len);

	wdev->ssid_len = connect->ssid_len;



	wdev->conn_bss_type = connect->pbss ? IEEE80211_BSS_TYPE_PBSS :

					      IEEE80211_BSS_TYPE_ESS;



	if (!rdev->ops->connect)

		err = cfg80211_sme_connect(wdev, connect, prev_bssid);

	else

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