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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#include <linux/rculist.h>
17
18#include "hif.h"
19#include "wlan.h"
20#include "wlan_cfg.h"
21
22#define FLOW_CONTROL_LOWER_THRESHOLD 128
23#define FLOW_CONTROL_UPPER_THRESHOLD 256
24
25#define PMKID_FOUND 1
26#define NUM_STA_ASSOCIATED 8
27
28#define TCP_ACK_FILTER_LINK_SPEED_THRESH 54
29#define DEFAULT_LINK_SPEED 72
30
31#define TX_BACKOFF_WEIGHT_MS 1
32
33#define wilc_for_each_vif(w, v) \
34 struct wilc *_w = w; \
35 list_for_each_entry_srcu(v, &_w->vif_list, list, \
36 srcu_read_lock_held(&_w->srcu))
37
38struct wilc_wfi_stats {
39 unsigned long rx_packets;
40 unsigned long tx_packets;
41 unsigned long rx_bytes;
42 unsigned long tx_bytes;
43 u64 rx_time;
44 u64 tx_time;
45
46};
47
48struct wilc_wfi_key {
49 u8 *key;
50 u8 *seq;
51 int key_len;
52 int seq_len;
53 u32 cipher;
54};
55
56struct sta_info {
57 u8 sta_associated_bss[WILC_MAX_NUM_STA][ETH_ALEN];
58};
59
60/* Parameters needed for host interface for remaining on channel */
61struct wilc_wfi_p2p_listen_params {
62 struct ieee80211_channel *listen_ch;
63 u32 listen_duration;
64 u64 listen_cookie;
65};
66
67static const u32 wilc_cipher_suites[] = {
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
136 /* The real interface that the monitor is on */
137 struct net_device *real_ndev;
138 struct wilc_wfi_key *wilc_gtk[WILC_MAX_NUM_STA];
139 struct wilc_wfi_key *wilc_ptk[WILC_MAX_NUM_STA];
140 struct wilc_wfi_key *wilc_igtk[2];
141 u8 wilc_groupkey;
142
143 /* mutexes */
144 struct mutex scan_req_lock;
145 bool p2p_listen_state;
146 int scanned_cnt;
147
148 u64 inc_roc_cookie;
149};
150
151#define MAX_TCP_SESSION 25
152#define MAX_PENDING_ACKS 256
153
154struct ack_session_info {
155 u32 seq_num;
156 u32 bigger_ack_num;
157 u16 src_port;
158 u16 dst_port;
159 u16 status;
160};
161
162struct pending_acks {
163 u32 ack_num;
164 u32 session_index;
165 struct txq_entry_t *txqe;
166};
167
168struct tcp_ack_filter {
169 struct ack_session_info ack_session_info[2 * MAX_TCP_SESSION];
170 struct pending_acks pending_acks[MAX_PENDING_ACKS];
171 u32 pending_base;
172 u32 tcp_session;
173 u32 pending_acks_idx;
174 bool enabled;
175};
176
177struct wilc_vif {
178 u8 idx;
179 u8 iftype;
180 int monitor_flag;
181 int mac_opened;
182 u32 mgmt_reg_stypes;
183 struct net_device_stats netstats;
184 struct wilc *wilc;
185 u8 bssid[ETH_ALEN];
186 struct host_if_drv *hif_drv;
187 struct net_device *ndev;
188 struct timer_list during_ip_timer;
189 struct timer_list periodic_rssi;
190 struct rf_info periodic_stat;
191 struct tcp_ack_filter ack_filter;
192 bool connecting;
193 struct wilc_priv priv;
194 struct list_head list;
195 struct cfg80211_bss *bss;
196 struct cfg80211_external_auth_params auth;
197};
198
199struct wilc_tx_queue_status {
200 u8 buffer[AC_BUFFER_SIZE];
201 u16 end_index;
202 u16 cnt[NQUEUES];
203 u16 sum;
204 bool initialized;
205};
206
207struct wilc {
208 struct wiphy *wiphy;
209 const struct wilc_hif_func *hif_func;
210 int io_type;
211 s8 mac_status;
212 struct clk *rtc_clk;
213 bool initialized;
214 u32 chipid;
215 bool power_save_mode;
216 int dev_irq_num;
217 int close;
218 u8 vif_num;
219 struct list_head vif_list;
220
221 /* protect vif list */
222 struct mutex vif_mutex;
223 struct srcu_struct srcu;
224 u8 open_ifcs;
225
226 /* protect head of transmit queue */
227 struct mutex txq_add_to_head_cs;
228
229 /* protect txq_entry_t transmit queue */
230 spinlock_t txq_spinlock;
231
232 /* protect rxq_entry_t receiver queue */
233 struct mutex rxq_cs;
234
235 /* lock to protect hif access */
236 struct mutex hif_cs;
237
238 struct completion cfg_event;
239 struct completion sync_event;
240 struct completion txq_event;
241 struct completion txq_thread_started;
242
243 struct task_struct *txq_thread;
244
245 int quit;
246
247 /* lock to protect issue of wid command to firmware */
248 struct mutex cfg_cmd_lock;
249 struct wilc_cfg_frame cfg_frame;
250 u32 cfg_frame_offset;
251 u8 cfg_seq_no;
252
253 u8 *rx_buffer;
254 u32 rx_buffer_offset;
255 u8 *tx_buffer;
256 u32 *vmm_table;
257
258 struct txq_handle txq[NQUEUES];
259 int txq_entries;
260
261 struct wilc_tx_queue_status tx_q_limit;
262 struct rxq_entry_t rxq_head;
263
264 const struct firmware *firmware;
265
266 struct device *dev;
267 bool suspend_event;
268
269 struct workqueue_struct *hif_workqueue;
270 struct wilc_cfg cfg;
271 void *bus_data;
272 struct net_device *monitor_dev;
273
274 /* deinit lock */
275 struct mutex deinit_lock;
276 u8 sta_ch;
277 u8 op_ch;
278 struct ieee80211_channel channels[ARRAY_SIZE(wilc_2ghz_channels)];
279 struct ieee80211_rate bitrates[ARRAY_SIZE(wilc_bitrates)];
280 struct ieee80211_supported_band band;
281 u32 cipher_suites[ARRAY_SIZE(wilc_cipher_suites)];
282};
283
284struct wilc_wfi_mon_priv {
285 struct net_device *real_ndev;
286};
287
288void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size, u32 pkt_offset);
289void wilc_mac_indicate(struct wilc *wilc);
290void wilc_netdev_cleanup(struct wilc *wilc);
291void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size, bool is_auth);
292void wilc_wlan_set_bssid(struct net_device *wilc_netdev, const u8 *bssid,
293 u8 mode);
294struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name,
295 int vif_type, enum nl80211_iftype type,
296 bool rtnl_locked);
297#endif