1/* SPDX-License-Identifier: GPL-2.0 */
  2/*
  3 * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
  4 * All rights reserved.
  5 */
  6
  7#ifndef WILC_NETDEV_H
  8#define WILC_NETDEV_H
  9
 10#include <linux/tcp.h>
 11#include <linux/ieee80211.h>
 12#include <net/cfg80211.h>
 13#include <net/ieee80211_radiotap.h>
 14#include <linux/if_arp.h>
 15#include <linux/gpio/consumer.h>
 16
 17#include "hif.h"
 18#include "wlan.h"
 19#include "wlan_cfg.h"
 20
 21#define FLOW_CONTROL_LOWER_THRESHOLD		128
 22#define FLOW_CONTROL_UPPER_THRESHOLD		256
 23
 24#define PMKID_FOUND				1
 25#define NUM_STA_ASSOCIATED			8
 26
 27#define TCP_ACK_FILTER_LINK_SPEED_THRESH	54
 28#define DEFAULT_LINK_SPEED			72
 29
 30struct wilc_wfi_stats {
 31	unsigned long rx_packets;
 32	unsigned long tx_packets;
 33	unsigned long rx_bytes;
 34	unsigned long tx_bytes;
 35	u64 rx_time;
 36	u64 tx_time;
 37
 38};
 39
 40struct wilc_wfi_key {
 41	u8 *key;
 42	u8 *seq;
 43	int key_len;
 44	int seq_len;
 45	u32 cipher;
 46};
 47
 48struct wilc_wfi_wep_key {
 49	u8 *key;
 50	u8 key_len;
 51	u8 key_idx;
 52};
 53
 54struct sta_info {
 55	u8 sta_associated_bss[WILC_MAX_NUM_STA][ETH_ALEN];
 56};
 57
 58/* Parameters needed for host interface for remaining on channel */
 59struct wilc_wfi_p2p_listen_params {
 60	struct ieee80211_channel *listen_ch;
 61	u32 listen_duration;
 62	u64 listen_cookie;
 63};
 64
 65static const u32 wilc_cipher_suites[] = {
 66	WLAN_CIPHER_SUITE_WEP40,
 67	WLAN_CIPHER_SUITE_WEP104,
 68	WLAN_CIPHER_SUITE_TKIP,
 69	WLAN_CIPHER_SUITE_CCMP,
 70	WLAN_CIPHER_SUITE_AES_CMAC
 71};
 72
 73#define CHAN2G(_channel, _freq, _flags) {	 \
 74	.band             = NL80211_BAND_2GHZ, \
 75	.center_freq      = (_freq),		 \
 76	.hw_value         = (_channel),		 \
 77	.flags            = (_flags),		 \
 78	.max_antenna_gain = 0,			 \
 79	.max_power        = 30,			 \
 80}
 81
 82static const struct ieee80211_channel wilc_2ghz_channels[] = {
 83	CHAN2G(1,  2412, 0),
 84	CHAN2G(2,  2417, 0),
 85	CHAN2G(3,  2422, 0),
 86	CHAN2G(4,  2427, 0),
 87	CHAN2G(5,  2432, 0),
 88	CHAN2G(6,  2437, 0),
 89	CHAN2G(7,  2442, 0),
 90	CHAN2G(8,  2447, 0),
 91	CHAN2G(9,  2452, 0),
 92	CHAN2G(10, 2457, 0),
 93	CHAN2G(11, 2462, 0),
 94	CHAN2G(12, 2467, 0),
 95	CHAN2G(13, 2472, 0),
 96	CHAN2G(14, 2484, 0)
 97};
 98
 99#define RATETAB_ENT(_rate, _hw_value, _flags) {	\
100	.bitrate  = (_rate),			\
101	.hw_value = (_hw_value),		\
102	.flags    = (_flags),			\
103}
104
105static struct ieee80211_rate wilc_bitrates[] = {
106	RATETAB_ENT(10,  0,  0),
107	RATETAB_ENT(20,  1,  0),
108	RATETAB_ENT(55,  2,  0),
109	RATETAB_ENT(110, 3,  0),
110	RATETAB_ENT(60,  9,  0),
111	RATETAB_ENT(90,  6,  0),
112	RATETAB_ENT(120, 7,  0),
113	RATETAB_ENT(180, 8,  0),
114	RATETAB_ENT(240, 9,  0),
115	RATETAB_ENT(360, 10, 0),
116	RATETAB_ENT(480, 11, 0),
117	RATETAB_ENT(540, 12, 0)
118};
119
120struct wilc_priv {
121	struct wireless_dev wdev;
122	struct cfg80211_scan_request *scan_req;
123
124	struct wilc_wfi_p2p_listen_params remain_on_ch_params;
125	u64 tx_cookie;
126
127	bool cfg_scanning;
128
129	u8 associated_bss[ETH_ALEN];
130	struct sta_info assoc_stainfo;
131	struct sk_buff *skb;
132	struct net_device *dev;
133	struct host_if_drv *hif_drv;
134	struct wilc_pmkid_attr pmkid_list;
135	u8 wep_key[4][WLAN_KEY_LEN_WEP104];
136	u8 wep_key_len[4];
137
138	/* The real interface that the monitor is on */
139	struct net_device *real_ndev;
140	struct wilc_wfi_key *wilc_gtk[WILC_MAX_NUM_STA];
141	struct wilc_wfi_key *wilc_ptk[WILC_MAX_NUM_STA];
142	u8 wilc_groupkey;
143
144	/* mutexes */
145	struct mutex scan_req_lock;
146	bool p2p_listen_state;
147	int scanned_cnt;
148
149	u64 inc_roc_cookie;
150};
151
152#define MAX_TCP_SESSION                25
153#define MAX_PENDING_ACKS               256
154
155struct ack_session_info {
156	u32 seq_num;
157	u32 bigger_ack_num;
158	u16 src_port;
159	u16 dst_port;
160	u16 status;
161};
162
163struct pending_acks {
164	u32 ack_num;
165	u32 session_index;
166	struct txq_entry_t  *txqe;
167};
168
169struct tcp_ack_filter {
170	struct ack_session_info ack_session_info[2 * MAX_TCP_SESSION];
171	struct pending_acks pending_acks[MAX_PENDING_ACKS];
172	u32 pending_base;
173	u32 tcp_session;
174	u32 pending_acks_idx;
175	bool enabled;
176};
177
178struct wilc_vif {
179	u8 idx;
180	u8 iftype;
181	int monitor_flag;
182	int mac_opened;
183	u32 mgmt_reg_stypes;
184	struct net_device_stats netstats;
185	struct wilc *wilc;
186	u8 bssid[ETH_ALEN];
187	struct host_if_drv *hif_drv;
188	struct net_device *ndev;
189	u8 mode;
190	struct timer_list during_ip_timer;
191	struct timer_list periodic_rssi;
192	struct rf_info periodic_stat;
193	struct tcp_ack_filter ack_filter;
194	bool connecting;
195	struct wilc_priv priv;
196	struct list_head list;
197	struct cfg80211_bss *bss;
198};
199
200struct wilc {
201	struct wiphy *wiphy;
202	const struct wilc_hif_func *hif_func;
203	int io_type;
204	s8 mac_status;
205	struct clk *rtc_clk;
206	bool initialized;
207	int dev_irq_num;
208	int close;
209	u8 vif_num;
210	struct list_head vif_list;
211
212	/* protect vif list */
213	struct mutex vif_mutex;
214	struct srcu_struct srcu;
215	u8 open_ifcs;
216
217	/* protect head of transmit queue */
218	struct mutex txq_add_to_head_cs;
219
220	/* protect txq_entry_t transmit queue */
221	spinlock_t txq_spinlock;
222
223	/* protect rxq_entry_t receiver queue */
224	struct mutex rxq_cs;
225
226	/* lock to protect hif access */
227	struct mutex hif_cs;
228
229	struct completion cfg_event;
230	struct completion sync_event;
231	struct completion txq_event;
232	struct completion txq_thread_started;
233
234	struct task_struct *txq_thread;
235
236	int quit;
237
238	/* lock to protect issue of wid command to firmware */
239	struct mutex cfg_cmd_lock;
240	struct wilc_cfg_frame cfg_frame;
241	u32 cfg_frame_offset;
242	u8 cfg_seq_no;
243
244	u8 *rx_buffer;
245	u32 rx_buffer_offset;
246	u8 *tx_buffer;
247
248	struct txq_entry_t txq_head;
249	int txq_entries;
250
251	struct rxq_entry_t rxq_head;
252
253	const struct firmware *firmware;
254
255	struct device *dev;
256	bool suspend_event;
257
258	int clients_count;
259	struct workqueue_struct *hif_workqueue;
260	enum chip_ps_states chip_ps_state;
261	struct wilc_cfg cfg;
262	void *bus_data;
263	struct net_device *monitor_dev;
264
265	/* deinit lock */
266	struct mutex deinit_lock;
267	u8 sta_ch;
268	u8 op_ch;
269	struct ieee80211_channel channels[ARRAY_SIZE(wilc_2ghz_channels)];
270	struct ieee80211_rate bitrates[ARRAY_SIZE(wilc_bitrates)];
271	struct ieee80211_supported_band band;
272	u32 cipher_suites[ARRAY_SIZE(wilc_cipher_suites)];
273};
274
275struct wilc_wfi_mon_priv {
276	struct net_device *real_ndev;
277};
278
279void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size, u32 pkt_offset);
280void wilc_mac_indicate(struct wilc *wilc);
281void wilc_netdev_cleanup(struct wilc *wilc);
282void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size);
283void wilc_wlan_set_bssid(struct net_device *wilc_netdev, u8 *bssid, u8 mode);
284struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name,
285				      int vif_type, enum nl80211_iftype type,
286				      bool rtnl_locked);
287#endif