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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
* All rights reserved.
*/
#ifndef WILC_NETDEV_H
#define WILC_NETDEV_H
#include <linux/tcp.h>
#include <linux/ieee80211.h>
#include <net/cfg80211.h>
#include <net/ieee80211_radiotap.h>
#include <linux/if_arp.h>
#include <linux/gpio/consumer.h>
#include <linux/rculist.h>
#include "hif.h"
#include "wlan.h"
#include "wlan_cfg.h"
#define FLOW_CONTROL_LOWER_THRESHOLD 128
#define FLOW_CONTROL_UPPER_THRESHOLD 256
#define PMKID_FOUND 1
#define NUM_STA_ASSOCIATED 8
#define TCP_ACK_FILTER_LINK_SPEED_THRESH 54
#define DEFAULT_LINK_SPEED 72
#define TX_BACKOFF_WEIGHT_MS 1
#define wilc_for_each_vif(w, v) \
struct wilc *_w = w; \
list_for_each_entry_srcu(v, &_w->vif_list, list, \
srcu_read_lock_held(&_w->srcu))
struct wilc_wfi_stats {
unsigned long rx_packets;
unsigned long tx_packets;
unsigned long rx_bytes;
unsigned long tx_bytes;
u64 rx_time;
u64 tx_time;
};
struct wilc_wfi_key {
u8 *key;
u8 *seq;
int key_len;
int seq_len;
u32 cipher;
};
struct sta_info {
u8 sta_associated_bss[WILC_MAX_NUM_STA][ETH_ALEN];
};
/* Parameters needed for host interface for remaining on channel */
struct wilc_wfi_p2p_listen_params {
struct ieee80211_channel *listen_ch;
u32 listen_duration;
u64 listen_cookie;
};
static const u32 wilc_cipher_suites[] = {
WLAN_CIPHER_SUITE_TKIP,
WLAN_CIPHER_SUITE_CCMP,
WLAN_CIPHER_SUITE_AES_CMAC
};
#define CHAN2G(_channel, _freq, _flags) { \
.band = NL80211_BAND_2GHZ, \
.center_freq = (_freq), \
.hw_value = (_channel), \
.flags = (_flags), \
.max_antenna_gain = 0, \
.max_power = 30, \
}
static const struct ieee80211_channel wilc_2ghz_channels[] = {
CHAN2G(1, 2412, 0),
CHAN2G(2, 2417, 0),
CHAN2G(3, 2422, 0),
CHAN2G(4, 2427, 0),
CHAN2G(5, 2432, 0),
CHAN2G(6, 2437, 0),
CHAN2G(7, 2442, 0),
CHAN2G(8, 2447, 0),
CHAN2G(9, 2452, 0),
CHAN2G(10, 2457, 0),
CHAN2G(11, 2462, 0),
CHAN2G(12, 2467, 0),
CHAN2G(13, 2472, 0),
CHAN2G(14, 2484, 0)
};
#define RATETAB_ENT(_rate, _hw_value, _flags) { \
.bitrate = (_rate), \
.hw_value = (_hw_value), \
.flags = (_flags), \
}
static struct ieee80211_rate wilc_bitrates[] = {
RATETAB_ENT(10, 0, 0),
RATETAB_ENT(20, 1, 0),
RATETAB_ENT(55, 2, 0),
RATETAB_ENT(110, 3, 0),
RATETAB_ENT(60, 9, 0),
RATETAB_ENT(90, 6, 0),
RATETAB_ENT(120, 7, 0),
RATETAB_ENT(180, 8, 0),
RATETAB_ENT(240, 9, 0),
RATETAB_ENT(360, 10, 0),
RATETAB_ENT(480, 11, 0),
RATETAB_ENT(540, 12, 0)
};
struct wilc_priv {
struct wireless_dev wdev;
struct cfg80211_scan_request *scan_req;
struct wilc_wfi_p2p_listen_params remain_on_ch_params;
u64 tx_cookie;
bool cfg_scanning;
u8 associated_bss[ETH_ALEN];
struct sta_info assoc_stainfo;
struct sk_buff *skb;
struct net_device *dev;
struct host_if_drv *hif_drv;
struct wilc_pmkid_attr pmkid_list;
/* The real interface that the monitor is on */
struct net_device *real_ndev;
struct wilc_wfi_key *wilc_gtk[WILC_MAX_NUM_STA];
struct wilc_wfi_key *wilc_ptk[WILC_MAX_NUM_STA];
struct wilc_wfi_key *wilc_igtk[2];
u8 wilc_groupkey;
/* mutexes */
struct mutex scan_req_lock;
bool p2p_listen_state;
int scanned_cnt;
u64 inc_roc_cookie;
};
#define MAX_TCP_SESSION 25
#define MAX_PENDING_ACKS 256
struct ack_session_info {
u32 seq_num;
u32 bigger_ack_num;
u16 src_port;
u16 dst_port;
u16 status;
};
struct pending_acks {
u32 ack_num;
u32 session_index;
struct txq_entry_t *txqe;
};
struct tcp_ack_filter {
struct ack_session_info ack_session_info[2 * MAX_TCP_SESSION];
struct pending_acks pending_acks[MAX_PENDING_ACKS];
u32 pending_base;
u32 tcp_session;
u32 pending_acks_idx;
bool enabled;
};
struct wilc_vif {
u8 idx;
u8 iftype;
int monitor_flag;
int mac_opened;
u32 mgmt_reg_stypes;
struct net_device_stats netstats;
struct wilc *wilc;
u8 bssid[ETH_ALEN];
struct host_if_drv *hif_drv;
struct net_device *ndev;
struct timer_list during_ip_timer;
struct timer_list periodic_rssi;
struct rf_info periodic_stat;
struct tcp_ack_filter ack_filter;
bool connecting;
struct wilc_priv priv;
struct list_head list;
struct cfg80211_bss *bss;
struct cfg80211_external_auth_params auth;
};
struct wilc_tx_queue_status {
u8 buffer[AC_BUFFER_SIZE];
u16 end_index;
u16 cnt[NQUEUES];
u16 sum;
bool initialized;
};
struct wilc {
struct wiphy *wiphy;
const struct wilc_hif_func *hif_func;
int io_type;
s8 mac_status;
struct clk *rtc_clk;
bool initialized;
u32 chipid;
bool power_save_mode;
int dev_irq_num;
int close;
u8 vif_num;
struct list_head vif_list;
/* protect vif list */
struct mutex vif_mutex;
/* Sleepable RCU struct to manipulate vif list. Sleepable version is
* needed over the classic RCU version because the driver's current
* design involves some sleeping code while manipulating a vif
* retrieved from vif list (so in a SRCU critical section), like:
* - sending commands to the chip, using info from retrieved vif
* - registering a new monitoring net device
*/
struct srcu_struct srcu;
u8 open_ifcs;
/* protect head of transmit queue */
struct mutex txq_add_to_head_cs;
/* protect txq_entry_t transmit queue */
spinlock_t txq_spinlock;
/* protect rxq_entry_t receiver queue */
struct mutex rxq_cs;
/* lock to protect hif access */
struct mutex hif_cs;
struct completion cfg_event;
struct completion sync_event;
struct completion txq_event;
struct completion txq_thread_started;
struct task_struct *txq_thread;
int quit;
/* lock to protect issue of wid command to firmware */
struct mutex cfg_cmd_lock;
struct wilc_cfg_frame cfg_frame;
u32 cfg_frame_offset;
u8 cfg_seq_no;
u8 *rx_buffer;
u32 rx_buffer_offset;
u8 *tx_buffer;
u32 *vmm_table;
struct txq_handle txq[NQUEUES];
int txq_entries;
struct wilc_tx_queue_status tx_q_limit;
struct rxq_entry_t rxq_head;
const struct firmware *firmware;
struct device *dev;
bool suspend_event;
struct workqueue_struct *hif_workqueue;
struct wilc_cfg cfg;
void *bus_data;
struct net_device *monitor_dev;
/* deinit lock */
struct mutex deinit_lock;
u8 sta_ch;
u8 op_ch;
struct ieee80211_channel channels[ARRAY_SIZE(wilc_2ghz_channels)];
struct ieee80211_rate bitrates[ARRAY_SIZE(wilc_bitrates)];
struct ieee80211_supported_band band;
u32 cipher_suites[ARRAY_SIZE(wilc_cipher_suites)];
};
struct wilc_wfi_mon_priv {
struct net_device *real_ndev;
};
void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size, u32 pkt_offset);
void wilc_mac_indicate(struct wilc *wilc);
void wilc_netdev_cleanup(struct wilc *wilc);
void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size, bool is_auth);
void wilc_wlan_set_bssid(struct net_device *wilc_netdev, const u8 *bssid,
u8 mode);
struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name,
int vif_type, enum nl80211_iftype type,
bool rtnl_locked);
#endif
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