microchip/wilc1000/netdev.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
0004  * All rights reserved.
0005  */
0006
0007 #ifndef WILC_NETDEV_H
0008 #define WILC_NETDEV_H
0009
0010 #include <linux/tcp.h>
0011 #include <linux/ieee80211.h>
0012 #include <net/cfg80211.h>
0013 #include <net/ieee80211_radiotap.h>
0014 #include <linux/if_arp.h>
0015 #include <linux/gpio/consumer.h>
0016
0017 #include "hif.h"
0018 #include "wlan.h"
0019 #include "wlan_cfg.h"
0020
0021 #define FLOW_CONTROL_LOWER_THRESHOLD        128
0022 #define FLOW_CONTROL_UPPER_THRESHOLD        256
0023
0024 #define PMKID_FOUND             1
0025 #define NUM_STA_ASSOCIATED          8
0026
0027 #define TCP_ACK_FILTER_LINK_SPEED_THRESH    54
0028 #define DEFAULT_LINK_SPEED          72
0029
0030 struct wilc_wfi_stats {
0031     unsigned long rx_packets;
0032     unsigned long tx_packets;
0033     unsigned long rx_bytes;
0034     unsigned long tx_bytes;
0035     u64 rx_time;
0036     u64 tx_time;
0037
0038 };
0039
0040 struct wilc_wfi_key {
0041     u8 *key;
0042     u8 *seq;
0043     int key_len;
0044     int seq_len;
0045     u32 cipher;
0046 };
0047
0048 struct sta_info {
0049     u8 sta_associated_bss[WILC_MAX_NUM_STA][ETH_ALEN];
0050 };
0051
0052 /* Parameters needed for host interface for remaining on channel */
0053 struct wilc_wfi_p2p_listen_params {
0054     struct ieee80211_channel *listen_ch;
0055     u32 listen_duration;
0056     u64 listen_cookie;
0057 };
0058
0059 static const u32 wilc_cipher_suites[] = {
0060     WLAN_CIPHER_SUITE_TKIP,
0061     WLAN_CIPHER_SUITE_CCMP,
0062     WLAN_CIPHER_SUITE_AES_CMAC
0063 };
0064
0065 #define CHAN2G(_channel, _freq, _flags) {    \
0066     .band             = NL80211_BAND_2GHZ, \
0067     .center_freq      = (_freq),         \
0068     .hw_value         = (_channel),      \
0069     .flags            = (_flags),        \
0070     .max_antenna_gain = 0,           \
0071     .max_power        = 30,          \
0072 }
0073
0074 static const struct ieee80211_channel wilc_2ghz_channels[] = {
0075     CHAN2G(1,  2412, 0),
0076     CHAN2G(2,  2417, 0),
0077     CHAN2G(3,  2422, 0),
0078     CHAN2G(4,  2427, 0),
0079     CHAN2G(5,  2432, 0),
0080     CHAN2G(6,  2437, 0),
0081     CHAN2G(7,  2442, 0),
0082     CHAN2G(8,  2447, 0),
0083     CHAN2G(9,  2452, 0),
0084     CHAN2G(10, 2457, 0),
0085     CHAN2G(11, 2462, 0),
0086     CHAN2G(12, 2467, 0),
0087     CHAN2G(13, 2472, 0),
0088     CHAN2G(14, 2484, 0)
0089 };
0090
0091 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
0092     .bitrate  = (_rate),            \
0093     .hw_value = (_hw_value),        \
0094     .flags    = (_flags),           \
0095 }
0096
0097 static struct ieee80211_rate wilc_bitrates[] = {
0098     RATETAB_ENT(10,  0,  0),
0099     RATETAB_ENT(20,  1,  0),
0100     RATETAB_ENT(55,  2,  0),
0101     RATETAB_ENT(110, 3,  0),
0102     RATETAB_ENT(60,  9,  0),
0103     RATETAB_ENT(90,  6,  0),
0104     RATETAB_ENT(120, 7,  0),
0105     RATETAB_ENT(180, 8,  0),
0106     RATETAB_ENT(240, 9,  0),
0107     RATETAB_ENT(360, 10, 0),
0108     RATETAB_ENT(480, 11, 0),
0109     RATETAB_ENT(540, 12, 0)
0110 };
0111
0112 struct wilc_priv {
0113     struct wireless_dev wdev;
0114     struct cfg80211_scan_request *scan_req;
0115
0116     struct wilc_wfi_p2p_listen_params remain_on_ch_params;
0117     u64 tx_cookie;
0118
0119     bool cfg_scanning;
0120
0121     u8 associated_bss[ETH_ALEN];
0122     struct sta_info assoc_stainfo;
0123     struct sk_buff *skb;
0124     struct net_device *dev;
0125     struct host_if_drv *hif_drv;
0126     struct wilc_pmkid_attr pmkid_list;
0127
0128     /* The real interface that the monitor is on */
0129     struct net_device *real_ndev;
0130     struct wilc_wfi_key *wilc_gtk[WILC_MAX_NUM_STA];
0131     struct wilc_wfi_key *wilc_ptk[WILC_MAX_NUM_STA];
0132     struct wilc_wfi_key *wilc_igtk[2];
0133     u8 wilc_groupkey;
0134
0135     /* mutexes */
0136     struct mutex scan_req_lock;
0137     bool p2p_listen_state;
0138     int scanned_cnt;
0139
0140     u64 inc_roc_cookie;
0141 };
0142
0143 #define MAX_TCP_SESSION                25
0144 #define MAX_PENDING_ACKS               256
0145
0146 struct ack_session_info {
0147     u32 seq_num;
0148     u32 bigger_ack_num;
0149     u16 src_port;
0150     u16 dst_port;
0151     u16 status;
0152 };
0153
0154 struct pending_acks {
0155     u32 ack_num;
0156     u32 session_index;
0157     struct txq_entry_t  *txqe;
0158 };
0159
0160 struct tcp_ack_filter {
0161     struct ack_session_info ack_session_info[2 * MAX_TCP_SESSION];
0162     struct pending_acks pending_acks[MAX_PENDING_ACKS];
0163     u32 pending_base;
0164     u32 tcp_session;
0165     u32 pending_acks_idx;
0166     bool enabled;
0167 };
0168
0169 struct wilc_vif {
0170     u8 idx;
0171     u8 iftype;
0172     int monitor_flag;
0173     int mac_opened;
0174     u32 mgmt_reg_stypes;
0175     struct net_device_stats netstats;
0176     struct wilc *wilc;
0177     u8 bssid[ETH_ALEN];
0178     struct host_if_drv *hif_drv;
0179     struct net_device *ndev;
0180     struct timer_list during_ip_timer;
0181     struct timer_list periodic_rssi;
0182     struct rf_info periodic_stat;
0183     struct tcp_ack_filter ack_filter;
0184     bool connecting;
0185     struct wilc_priv priv;
0186     struct list_head list;
0187     struct cfg80211_bss *bss;
0188     struct cfg80211_external_auth_params auth;
0189 };
0190
0191 struct wilc_tx_queue_status {
0192     u8 buffer[AC_BUFFER_SIZE];
0193     u16 end_index;
0194     u16 cnt[NQUEUES];
0195     u16 sum;
0196     bool initialized;
0197 };
0198
0199 struct wilc {
0200     struct wiphy *wiphy;
0201     const struct wilc_hif_func *hif_func;
0202     int io_type;
0203     s8 mac_status;
0204     struct clk *rtc_clk;
0205     bool initialized;
0206     u32 chipid;
0207     bool power_save_mode;
0208     int dev_irq_num;
0209     int close;
0210     u8 vif_num;
0211     struct list_head vif_list;
0212
0213     /* protect vif list */
0214     struct mutex vif_mutex;
0215     struct srcu_struct srcu;
0216     u8 open_ifcs;
0217
0218     /* protect head of transmit queue */
0219     struct mutex txq_add_to_head_cs;
0220
0221     /* protect txq_entry_t transmit queue */
0222     spinlock_t txq_spinlock;
0223
0224     /* protect rxq_entry_t receiver queue */
0225     struct mutex rxq_cs;
0226
0227     /* lock to protect hif access */
0228     struct mutex hif_cs;
0229
0230     struct completion cfg_event;
0231     struct completion sync_event;
0232     struct completion txq_event;
0233     struct completion txq_thread_started;
0234
0235     struct task_struct *txq_thread;
0236
0237     int quit;
0238
0239     /* lock to protect issue of wid command to firmware */
0240     struct mutex cfg_cmd_lock;
0241     struct wilc_cfg_frame cfg_frame;
0242     u32 cfg_frame_offset;
0243     u8 cfg_seq_no;
0244
0245     u8 *rx_buffer;
0246     u32 rx_buffer_offset;
0247     u8 *tx_buffer;
0248     u32 *vmm_table;
0249
0250     struct txq_handle txq[NQUEUES];
0251     int txq_entries;
0252
0253     struct wilc_tx_queue_status tx_q_limit;
0254     struct rxq_entry_t rxq_head;
0255
0256     const struct firmware *firmware;
0257
0258     struct device *dev;
0259     bool suspend_event;
0260
0261     struct workqueue_struct *hif_workqueue;
0262     struct wilc_cfg cfg;
0263     void *bus_data;
0264     struct net_device *monitor_dev;
0265
0266     /* deinit lock */
0267     struct mutex deinit_lock;
0268     u8 sta_ch;
0269     u8 op_ch;
0270     struct ieee80211_channel channels[ARRAY_SIZE(wilc_2ghz_channels)];
0271     struct ieee80211_rate bitrates[ARRAY_SIZE(wilc_bitrates)];
0272     struct ieee80211_supported_band band;
0273     u32 cipher_suites[ARRAY_SIZE(wilc_cipher_suites)];
0274 };
0275
0276 struct wilc_wfi_mon_priv {
0277     struct net_device *real_ndev;
0278 };
0279
0280 void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size, u32 pkt_offset);
0281 void wilc_mac_indicate(struct wilc *wilc);
0282 void wilc_netdev_cleanup(struct wilc *wilc);
0283 void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size, bool is_auth);
0284 void wilc_wlan_set_bssid(struct net_device *wilc_netdev, const u8 *bssid,
0285              u8 mode);
0286 struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name,
0287                       int vif_type, enum nl80211_iftype type,
0288                       bool rtnl_locked);
0289 #endif