1 /*
2  * Copyright (c) 2015-2016 Quantenna Communications, Inc.
3  * All rights reserved.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License
7  * as published by the Free Software Foundation; either version 2
8  * of the License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  */
16 
17 #ifndef _QTN_FMAC_CORE_H_
18 #define _QTN_FMAC_CORE_H_
19 
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/sched.h>
23 #include <linux/semaphore.h>
24 #include <linux/ip.h>
25 #include <linux/skbuff.h>
26 #include <linux/if_arp.h>
27 #include <linux/etherdevice.h>
28 #include <net/sock.h>
29 #include <net/lib80211.h>
30 #include <net/cfg80211.h>
31 #include <linux/vmalloc.h>
32 #include <linux/firmware.h>
33 #include <linux/ctype.h>
34 #include <linux/workqueue.h>
35 #include <linux/slab.h>
36 
37 #include "qlink.h"
38 #include "trans.h"
39 
40 #undef pr_fmt
41 #define pr_fmt(fmt)	KBUILD_MODNAME ": %s: " fmt, __func__
42 
43 #define QTNF_MAX_VSIE_LEN		255
44 #define QTNF_MAX_INTF			8
45 #define QTNF_MAX_EVENT_QUEUE_LEN	255
46 #define QTNF_SCAN_TIMEOUT_SEC		15
47 
48 #define QTNF_DEF_BSS_PRIORITY		0
49 #define QTNF_DEF_WDOG_TIMEOUT		5
50 #define QTNF_TX_TIMEOUT_TRSHLD		100
51 
52 extern const struct net_device_ops qtnf_netdev_ops;
53 
54 struct qtnf_bus;
55 struct qtnf_vif;
56 
57 struct qtnf_sta_node {
58 	struct list_head list;
59 	u8 mac_addr[ETH_ALEN];
60 };
61 
62 struct qtnf_sta_list {
63 	struct list_head head;
64 	atomic_t size;
65 };
66 
67 enum qtnf_sta_state {
68 	QTNF_STA_DISCONNECTED,
69 	QTNF_STA_CONNECTING,
70 	QTNF_STA_CONNECTED
71 };
72 
73 struct qtnf_vif {
74 	struct wireless_dev wdev;
75 	u8 bssid[ETH_ALEN];
76 	u8 mac_addr[ETH_ALEN];
77 	u8 vifid;
78 	u8 bss_priority;
79 	u8 bss_status;
80 	enum qtnf_sta_state sta_state;
81 	u16 mgmt_frames_bitmask;
82 	struct net_device *netdev;
83 	struct qtnf_wmac *mac;
84 
85 	struct work_struct reset_work;
86 	struct qtnf_sta_list sta_list;
87 	unsigned long cons_tx_timeout_cnt;
88 	int generation;
89 
90 	struct pcpu_sw_netstats __percpu *stats64;
91 };
92 
93 struct qtnf_mac_info {
94 	u8 bands_cap;
95 	u8 dev_mac[ETH_ALEN];
96 	u8 num_tx_chain;
97 	u8 num_rx_chain;
98 	u16 max_ap_assoc_sta;
99 	u32 frag_thr;
100 	u32 rts_thr;
101 	u8 lretry_limit;
102 	u8 sretry_limit;
103 	u8 coverage_class;
104 	u8 radar_detect_widths;
105 	u32 max_acl_mac_addrs;
106 	struct ieee80211_ht_cap ht_cap_mod_mask;
107 	struct ieee80211_vht_cap vht_cap_mod_mask;
108 	struct ieee80211_iface_combination *if_comb;
109 	size_t n_if_comb;
110 	u8 *extended_capabilities;
111 	u8 *extended_capabilities_mask;
112 	u8 extended_capabilities_len;
113 	struct wiphy_wowlan_support *wowlan;
114 };
115 
116 struct qtnf_chan_stats {
117 	u32 chan_num;
118 	u32 cca_tx;
119 	u32 cca_rx;
120 	u32 cca_busy;
121 	u32 cca_try;
122 	s8 chan_noise;
123 };
124 
125 struct qtnf_wmac {
126 	u8 macid;
127 	u8 wiphy_registered;
128 	u8 macaddr[ETH_ALEN];
129 	struct qtnf_bus *bus;
130 	struct qtnf_mac_info macinfo;
131 	struct qtnf_vif iflist[QTNF_MAX_INTF];
132 	struct cfg80211_scan_request *scan_req;
133 	struct mutex mac_lock;	/* lock during wmac speicific ops */
134 	struct delayed_work scan_timeout;
135 };
136 
137 struct qtnf_hw_info {
138 	u16 ql_proto_ver;
139 	u8 num_mac;
140 	u8 mac_bitmap;
141 	u32 fw_ver;
142 	u32 hw_capab;
143 	struct ieee80211_regdomain *rd;
144 	u8 total_tx_chain;
145 	u8 total_rx_chain;
146 	char fw_version[ETHTOOL_FWVERS_LEN];
147 	u32 hw_version;
148 	u8 max_scan_ssids;
149 };
150 
151 struct qtnf_vif *qtnf_mac_get_free_vif(struct qtnf_wmac *mac);
152 struct qtnf_vif *qtnf_mac_get_base_vif(struct qtnf_wmac *mac);
153 void qtnf_mac_iface_comb_free(struct qtnf_wmac *mac);
154 struct wiphy *qtnf_wiphy_allocate(struct qtnf_bus *bus);
155 int qtnf_core_net_attach(struct qtnf_wmac *mac, struct qtnf_vif *priv,
156 			 const char *name, unsigned char name_assign_type);
157 void qtnf_main_work_queue(struct work_struct *work);
158 int qtnf_cmd_send_update_phy_params(struct qtnf_wmac *mac, u32 changed);
159 int qtnf_cmd_send_get_phy_params(struct qtnf_wmac *mac);
160 
161 struct qtnf_wmac *qtnf_core_get_mac(const struct qtnf_bus *bus, u8 macid);
162 struct net_device *qtnf_classify_skb(struct qtnf_bus *bus, struct sk_buff *skb);
163 void qtnf_wake_all_queues(struct net_device *ndev);
164 void qtnf_update_rx_stats(struct net_device *ndev, const struct sk_buff *skb);
165 void qtnf_update_tx_stats(struct net_device *ndev, const struct sk_buff *skb);
166 
167 void qtnf_virtual_intf_cleanup(struct net_device *ndev);
168 
169 void qtnf_netdev_updown(struct net_device *ndev, bool up);
170 void qtnf_scan_done(struct qtnf_wmac *mac, bool aborted);
171 
172 static inline struct qtnf_vif *qtnf_netdev_get_priv(struct net_device *dev)
173 {
174 	return *((void **)netdev_priv(dev));
175 }
176 
177 #endif /* _QTN_FMAC_CORE_H_ */
178