1 /*
2  * Copyright (c) 2012 Broadcom Corporation
3  *
4  * Permission to use, copy, modify, and/or distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 #ifndef WL_CFGP2P_H_
17 #define WL_CFGP2P_H_
18 
19 #include <net/cfg80211.h>
20 
21 struct brcmf_cfg80211_info;
22 
23 /**
24  * enum p2p_bss_type - different type of BSS configurations.
25  *
26  * @P2PAPI_BSSCFG_PRIMARY: maps to driver's primary bsscfg.
27  * @P2PAPI_BSSCFG_DEVICE: maps to driver's P2P device discovery bsscfg.
28  * @P2PAPI_BSSCFG_CONNECTION: maps to driver's P2P connection bsscfg.
29  * @P2PAPI_BSSCFG_MAX: used for range checking.
30  */
31 enum p2p_bss_type {
32 	P2PAPI_BSSCFG_PRIMARY, /* maps to driver's primary bsscfg */
33 	P2PAPI_BSSCFG_DEVICE, /* maps to driver's P2P device discovery bsscfg */
34 	P2PAPI_BSSCFG_CONNECTION, /* maps to driver's P2P connection bsscfg */
35 	P2PAPI_BSSCFG_MAX
36 };
37 
38 /**
39  * struct p2p_bss - peer-to-peer bss related information.
40  *
41  * @vif: virtual interface of this P2P bss.
42  * @private_data: TBD
43  */
44 struct p2p_bss {
45 	struct brcmf_cfg80211_vif *vif;
46 	void *private_data;
47 };
48 
49 /**
50  * enum brcmf_p2p_status - P2P specific dongle status.
51  *
52  * @BRCMF_P2P_STATUS_IF_ADD: peer-to-peer vif add sent to dongle.
53  * @BRCMF_P2P_STATUS_IF_DEL: NOT-USED?
54  * @BRCMF_P2P_STATUS_IF_DELETING: peer-to-peer vif delete sent to dongle.
55  * @BRCMF_P2P_STATUS_IF_CHANGING: peer-to-peer vif change sent to dongle.
56  * @BRCMF_P2P_STATUS_IF_CHANGED: peer-to-peer vif change completed on dongle.
57  * @BRCMF_P2P_STATUS_ACTION_TX_COMPLETED: action frame tx completed.
58  * @BRCMF_P2P_STATUS_ACTION_TX_NOACK: action frame tx not acked.
59  * @BRCMF_P2P_STATUS_GO_NEG_PHASE: P2P GO negotiation ongoing.
60  * @BRCMF_P2P_STATUS_DISCOVER_LISTEN: P2P listen, remaining on channel.
61  * @BRCMF_P2P_STATUS_SENDING_ACT_FRAME: In the process of sending action frame.
62  * @BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN: extra listen time for af tx.
63  * @BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME: waiting for action frame response.
64  * @BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL: search channel for AF active.
65  */
66 enum brcmf_p2p_status {
67 	BRCMF_P2P_STATUS_ENABLED,
68 	BRCMF_P2P_STATUS_IF_ADD,
69 	BRCMF_P2P_STATUS_IF_DEL,
70 	BRCMF_P2P_STATUS_IF_DELETING,
71 	BRCMF_P2P_STATUS_IF_CHANGING,
72 	BRCMF_P2P_STATUS_IF_CHANGED,
73 	BRCMF_P2P_STATUS_ACTION_TX_COMPLETED,
74 	BRCMF_P2P_STATUS_ACTION_TX_NOACK,
75 	BRCMF_P2P_STATUS_GO_NEG_PHASE,
76 	BRCMF_P2P_STATUS_DISCOVER_LISTEN,
77 	BRCMF_P2P_STATUS_SENDING_ACT_FRAME,
78 	BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
79 	BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
80 	BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL
81 };
82 
83 /**
84  * struct afx_hdl - action frame off channel storage.
85  *
86  * @afx_work: worker thread for searching channel
87  * @act_frm_scan: thread synchronizing struct.
88  * @is_active: channel searching active.
89  * @peer_chan: current channel.
90  * @is_listen: sets mode for afx worker.
91  * @my_listen_chan: this peers listen channel.
92  * @peer_listen_chan: remote peers listen channel.
93  * @tx_dst_addr: mac address where tx af should be sent to.
94  */
95 struct afx_hdl {
96 	struct work_struct afx_work;
97 	struct completion act_frm_scan;
98 	bool is_active;
99 	s32 peer_chan;
100 	bool is_listen;
101 	u16 my_listen_chan;
102 	u16 peer_listen_chan;
103 	u8 tx_dst_addr[ETH_ALEN];
104 };
105 
106 /**
107  * struct brcmf_p2p_info - p2p specific driver information.
108  *
109  * @cfg: driver private data for cfg80211 interface.
110  * @status: status of P2P (see enum brcmf_p2p_status).
111  * @dev_addr: P2P device address.
112  * @int_addr: P2P interface address.
113  * @bss_idx: informate for P2P bss types.
114  * @listen_timer: timer for @WL_P2P_DISC_ST_LISTEN discover state.
115  * @listen_channel: channel for @WL_P2P_DISC_ST_LISTEN discover state.
116  * @remain_on_channel: contains copy of struct used by cfg80211.
117  * @remain_on_channel_cookie: cookie counter for remain on channel cmd
118  * @next_af_subtype: expected action frame subtype.
119  * @send_af_done: indication that action frame tx is complete.
120  * @afx_hdl: action frame search handler info.
121  * @af_sent_channel: channel action frame is sent.
122  * @af_tx_sent_jiffies: jiffies time when af tx was transmitted.
123  * @wait_next_af: thread synchronizing struct.
124  * @gon_req_action: about to send go negotiation requets frame.
125  * @block_gon_req_tx: drop tx go negotiation requets frame.
126  * @p2pdev_dynamically: is p2p device if created by module param or supplicant.
127  * @wait_for_offchan_complete: wait for off-channel tx completion event.
128  */
129 struct brcmf_p2p_info {
130 	struct brcmf_cfg80211_info *cfg;
131 	unsigned long status;
132 	u8 dev_addr[ETH_ALEN];
133 	u8 int_addr[ETH_ALEN];
134 	struct p2p_bss bss_idx[P2PAPI_BSSCFG_MAX];
135 	struct timer_list listen_timer;
136 	u8 listen_channel;
137 	struct ieee80211_channel remain_on_channel;
138 	u32 remain_on_channel_cookie;
139 	u8 next_af_subtype;
140 	struct completion send_af_done;
141 	struct afx_hdl afx_hdl;
142 	u32 af_sent_channel;
143 	unsigned long af_tx_sent_jiffies;
144 	struct completion wait_next_af;
145 	bool gon_req_action;
146 	bool block_gon_req_tx;
147 	bool p2pdev_dynamically;
148 	bool wait_for_offchan_complete;
149 };
150 
151 s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg, bool p2pdev_forced);
152 void brcmf_p2p_detach(struct brcmf_p2p_info *p2p);
153 struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name,
154 				       unsigned char name_assign_type,
155 				       enum nl80211_iftype type,
156 				       struct vif_params *params);
157 int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev);
158 int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg,
159 		       enum brcmf_fil_p2p_if_types if_type);
160 void brcmf_p2p_ifp_removed(struct brcmf_if *ifp, bool rtnl_locked);
161 int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev);
162 void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev);
163 int brcmf_p2p_scan_prep(struct wiphy *wiphy,
164 			struct cfg80211_scan_request *request,
165 			struct brcmf_cfg80211_vif *vif);
166 int brcmf_p2p_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
167 				struct ieee80211_channel *channel,
168 				unsigned int duration, u64 *cookie);
169 int brcmf_p2p_notify_listen_complete(struct brcmf_if *ifp,
170 				     const struct brcmf_event_msg *e,
171 				     void *data);
172 void brcmf_p2p_cancel_remain_on_channel(struct brcmf_if *ifp);
173 int brcmf_p2p_notify_action_frame_rx(struct brcmf_if *ifp,
174 				     const struct brcmf_event_msg *e,
175 				     void *data);
176 int brcmf_p2p_notify_action_tx_complete(struct brcmf_if *ifp,
177 					const struct brcmf_event_msg *e,
178 					void *data);
179 bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg,
180 				 struct net_device *ndev,
181 				 struct brcmf_fil_af_params_le *af_params);
182 bool brcmf_p2p_scan_finding_common_channel(struct brcmf_cfg80211_info *cfg,
183 					   struct brcmf_bss_info_le *bi);
184 s32 brcmf_p2p_notify_rx_mgmt_p2p_probereq(struct brcmf_if *ifp,
185 					  const struct brcmf_event_msg *e,
186 					  void *data);
187 #endif /* WL_CFGP2P_H_ */
188