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 sta_info {
 49	u8 sta_associated_bss[WILC_MAX_NUM_STA][ETH_ALEN];
 50};
 51
 52/* Parameters needed for host interface for remaining on channel */
 53struct wilc_wfi_p2p_listen_params {
 54	struct ieee80211_channel *listen_ch;
 55	u32 listen_duration;
 56	u64 listen_cookie;
 57};
 58
 59static const u32 wilc_cipher_suites[] = {
 60	WLAN_CIPHER_SUITE_TKIP,
 61	WLAN_CIPHER_SUITE_CCMP,
 62	WLAN_CIPHER_SUITE_AES_CMAC
 63};
 64
 65#define CHAN2G(_channel, _freq, _flags) {	 \
 66	.band             = NL80211_BAND_2GHZ, \
 67	.center_freq      = (_freq),		 \
 68	.hw_value         = (_channel),		 \
 69	.flags            = (_flags),		 \
 70	.max_antenna_gain = 0,			 \
 71	.max_power        = 30,			 \
 72}
 73
 74static const struct ieee80211_channel wilc_2ghz_channels[] = {
 75	CHAN2G(1,  2412, 0),
 76	CHAN2G(2,  2417, 0),
 77	CHAN2G(3,  2422, 0),
 78	CHAN2G(4,  2427, 0),
 79	CHAN2G(5,  2432, 0),
 80	CHAN2G(6,  2437, 0),
 81	CHAN2G(7,  2442, 0),
 82	CHAN2G(8,  2447, 0),
 83	CHAN2G(9,  2452, 0),
 84	CHAN2G(10, 2457, 0),
 85	CHAN2G(11, 2462, 0),
 86	CHAN2G(12, 2467, 0),
 87	CHAN2G(13, 2472, 0),
 88	CHAN2G(14, 2484, 0)
 89};
 90
 91#define RATETAB_ENT(_rate, _hw_value, _flags) {	\
 92	.bitrate  = (_rate),			\
 93	.hw_value = (_hw_value),		\
 94	.flags    = (_flags),			\
 95}
 96
 97static struct ieee80211_rate wilc_bitrates[] = {
 98	RATETAB_ENT(10,  0,  0),
 99	RATETAB_ENT(20,  1,  0),
100	RATETAB_ENT(55,  2,  0),
101	RATETAB_ENT(110, 3,  0),
102	RATETAB_ENT(60,  9,  0),
103	RATETAB_ENT(90,  6,  0),
104	RATETAB_ENT(120, 7,  0),
105	RATETAB_ENT(180, 8,  0),
106	RATETAB_ENT(240, 9,  0),
107	RATETAB_ENT(360, 10, 0),
108	RATETAB_ENT(480, 11, 0),
109	RATETAB_ENT(540, 12, 0)
110};
111
112struct wilc_priv {
113	struct wireless_dev wdev;
114	struct cfg80211_scan_request *scan_req;
115
116	struct wilc_wfi_p2p_listen_params remain_on_ch_params;
117	u64 tx_cookie;
118
119	bool cfg_scanning;
120
121	u8 associated_bss[ETH_ALEN];
122	struct sta_info assoc_stainfo;
123	struct sk_buff *skb;
124	struct net_device *dev;
125	struct host_if_drv *hif_drv;
126	struct wilc_pmkid_attr pmkid_list;
127
128	/* The real interface that the monitor is on */
129	struct net_device *real_ndev;
130	struct wilc_wfi_key *wilc_gtk[WILC_MAX_NUM_STA];
131	struct wilc_wfi_key *wilc_ptk[WILC_MAX_NUM_STA];
132	struct wilc_wfi_key *wilc_igtk[2];
133	u8 wilc_groupkey;
134
135	/* mutexes */
136	struct mutex scan_req_lock;
137	bool p2p_listen_state;
138	int scanned_cnt;
139
140	u64 inc_roc_cookie;
141};
142
143#define MAX_TCP_SESSION                25
144#define MAX_PENDING_ACKS               256
145
146struct ack_session_info {
147	u32 seq_num;
148	u32 bigger_ack_num;
149	u16 src_port;
150	u16 dst_port;
151	u16 status;
152};
153
154struct pending_acks {
155	u32 ack_num;
156	u32 session_index;
157	struct txq_entry_t  *txqe;
158};
159
160struct tcp_ack_filter {
161	struct ack_session_info ack_session_info[2 * MAX_TCP_SESSION];
162	struct pending_acks pending_acks[MAX_PENDING_ACKS];
163	u32 pending_base;
164	u32 tcp_session;
165	u32 pending_acks_idx;
166	bool enabled;
167};
168
169struct wilc_vif {
170	u8 idx;
171	u8 iftype;
172	int monitor_flag;
173	int mac_opened;
174	u32 mgmt_reg_stypes;
175	struct net_device_stats netstats;
176	struct wilc *wilc;
177	u8 bssid[ETH_ALEN];
178	struct host_if_drv *hif_drv;
179	struct net_device *ndev;
180	struct timer_list during_ip_timer;
181	struct timer_list periodic_rssi;
182	struct rf_info periodic_stat;
183	struct tcp_ack_filter ack_filter;
184	bool connecting;
185	struct wilc_priv priv;
186	struct list_head list;
187	struct cfg80211_bss *bss;
188	struct cfg80211_external_auth_params auth;
189};
190
191struct wilc_tx_queue_status {
192	u8 buffer[AC_BUFFER_SIZE];
193	u16 end_index;
194	u16 cnt[NQUEUES];
195	u16 sum;
196	bool initialized;
197};
198
199struct wilc {
200	struct wiphy *wiphy;
201	const struct wilc_hif_func *hif_func;
202	int io_type;
203	s8 mac_status;
204	struct clk *rtc_clk;
205	bool initialized;
206	u32 chipid;
207	bool power_save_mode;
208	int dev_irq_num;
209	int close;
210	u8 vif_num;
211	struct list_head vif_list;
212
213	/* protect vif list */
214	struct mutex vif_mutex;
215	struct srcu_struct srcu;
216	u8 open_ifcs;
217
218	/* protect head of transmit queue */
219	struct mutex txq_add_to_head_cs;
220
221	/* protect txq_entry_t transmit queue */
222	spinlock_t txq_spinlock;
223
224	/* protect rxq_entry_t receiver queue */
225	struct mutex rxq_cs;
226
227	/* lock to protect hif access */
228	struct mutex hif_cs;
229
230	struct completion cfg_event;
231	struct completion sync_event;
232	struct completion txq_event;
233	struct completion txq_thread_started;
234
235	struct task_struct *txq_thread;
236
237	int quit;
238
239	/* lock to protect issue of wid command to firmware */
240	struct mutex cfg_cmd_lock;
241	struct wilc_cfg_frame cfg_frame;
242	u32 cfg_frame_offset;
243	u8 cfg_seq_no;
244
245	u8 *rx_buffer;
246	u32 rx_buffer_offset;
247	u8 *tx_buffer;
248	u32 *vmm_table;
249
250	struct txq_handle txq[NQUEUES];
251	int txq_entries;
252
253	struct wilc_tx_queue_status tx_q_limit;
254	struct rxq_entry_t rxq_head;
255
256	const struct firmware *firmware;
257
258	struct device *dev;
259	bool suspend_event;
260
261	struct workqueue_struct *hif_workqueue;
262	struct wilc_cfg cfg;
263	void *bus_data;
264	struct net_device *monitor_dev;
265
266	/* deinit lock */
267	struct mutex deinit_lock;
268	u8 sta_ch;
269	u8 op_ch;
270	struct ieee80211_channel channels[ARRAY_SIZE(wilc_2ghz_channels)];
271	struct ieee80211_rate bitrates[ARRAY_SIZE(wilc_bitrates)];
272	struct ieee80211_supported_band band;
273	u32 cipher_suites[ARRAY_SIZE(wilc_cipher_suites)];
274};
275
276struct wilc_wfi_mon_priv {
277	struct net_device *real_ndev;
278};
279
280void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size, u32 pkt_offset);
281void wilc_mac_indicate(struct wilc *wilc);
282void wilc_netdev_cleanup(struct wilc *wilc);
283void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size, bool is_auth);
284void wilc_wlan_set_bssid(struct net_device *wilc_netdev, const u8 *bssid,
285			 u8 mode);
286struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name,
287				      int vif_type, enum nl80211_iftype type,
288				      bool rtnl_locked);
289#endif