1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _RTL871X_RECV_H_
3 #define _RTL871X_RECV_H_
4 
5 #include "osdep_service.h"
6 #include "drv_types.h"
7 
8 #define NR_RECVFRAME 256
9 
10 #define RXFRAME_ALIGN	8
11 #define RXFRAME_ALIGN_SZ	(1 << RXFRAME_ALIGN)
12 
13 #define MAX_SUBFRAME_COUNT	64
14 
15 /* for Rx reordering buffer control */
16 struct recv_reorder_ctrl {
17 	struct _adapter	*padapter;
18 	u16 indicate_seq; /* =wstart_b, init_value=0xffff */
19 	u16 wend_b;
20 	u8 wsize_b;
21 	struct  __queue pending_recvframe_queue;
22 	struct timer_list reordering_ctrl_timer;
23 };
24 
25 struct	stainfo_rxcache	{
26 	u16	tid_rxseq[16];
27 };
28 
29 #define		PHY_RSSI_SLID_WIN_MAX			100
30 #define		PHY_LINKQUALITY_SLID_WIN_MAX		20
31 
32 struct smooth_rssi_data {
33 	u32	elements[100];	/* array to store values */
34 	u32	index;		/* index to current array to store */
35 	u32	total_num;	/* num of valid elements */
36 	u32	total_val;	/* sum of valid elements */
37 };
38 
39 struct rx_pkt_attrib {
40 	u8	amsdu;
41 	u8	order;
42 	u8	qos;
43 	u8	to_fr_ds;
44 	u8	frag_num;
45 	u16	seq_num;
46 	u8   pw_save;
47 	u8    mfrag;
48 	u8    mdata;
49 	u8	privacy; /* in frame_ctrl field */
50 	u8	bdecrypted;
51 	int	hdrlen;	 /* the WLAN Header Len */
52 	int	encrypt; /* 0 no encrypt. != 0 encrypt algorithm */
53 	int	iv_len;
54 	int	icv_len;
55 	int	priority;
56 	int	ack_policy;
57 	u8	crc_err;
58 	u8	dst[ETH_ALEN];
59 	u8	src[ETH_ALEN];
60 	u8	ta[ETH_ALEN];
61 	u8	ra[ETH_ALEN];
62 	u8	bssid[ETH_ALEN];
63 	u8	tcpchk_valid; /* 0: invalid, 1: valid */
64 	u8	ip_chkrpt; /* 0: incorrect, 1: correct */
65 	u8	tcp_chkrpt; /* 0: incorrect, 1: correct */
66 	u8	signal_qual;
67 	s8	rx_mimo_signal_qual[2];
68 	u8	mcs_rate;
69 	u8	htc;
70 	u8	signal_strength;
71 };
72 
73 /*
74  * accesser of recv_priv: recv_entry(dispatch / passive level);
75  * recv_thread(passive) ; returnpkt(dispatch)
76  * ; halt(passive) ;
77  *
78  * using enter_critical section to protect
79  */
80 struct recv_priv {
81 	spinlock_t lock;
82 	struct  __queue	free_recv_queue;
83 	struct  __queue	recv_pending_queue;
84 	u8 *pallocated_frame_buf;
85 	u8 *precv_frame_buf;
86 	uint free_recvframe_cnt;
87 	struct _adapter	*adapter;
88 	uint	rx_bytes;
89 	uint	rx_pkts;
90 	uint	rx_drop;
91 	uint  rx_icv_err;
92 	uint  rx_largepacket_crcerr;
93 	uint  rx_smallpacket_crcerr;
94 	uint  rx_middlepacket_crcerr;
95 	u8  rx_pending_cnt;
96 	uint	ff_hwaddr;
97 	struct tasklet_struct recv_tasklet;
98 	struct sk_buff_head free_recv_skb_queue;
99 	struct sk_buff_head rx_skb_queue;
100 	u8 *pallocated_recv_buf;
101 	u8 *precv_buf;    /* 4 alignment */
102 	struct  __queue	free_recv_buf_queue;
103 	u32	free_recv_buf_queue_cnt;
104 	/* For the phy information */
105 	s8 rssi;
106 	u8 signal;
107 	u8 noise;
108 	u8 fw_rssi;
109 	struct smooth_rssi_data signal_qual_data;
110 	struct smooth_rssi_data signal_strength_data;
111 };
112 
113 struct sta_recv_priv {
114 	spinlock_t lock;
115 	sint	option;
116 	struct  __queue defrag_q; /* keeping the fragment frame until defrag */
117 	struct	stainfo_rxcache rxcache;
118 	uint	sta_rx_bytes;
119 	uint	sta_rx_pkts;
120 	uint	sta_rx_fail;
121 };
122 
123 #include "rtl8712_recv.h"
124 
125 /* get a free recv_frame from pfree_recv_queue */
126 union recv_frame *r8712_alloc_recvframe(struct  __queue *pfree_recv_queue);
127 void r8712_free_recvframe(union recv_frame *precvframe,
128 			  struct  __queue *pfree_recv_queue);
129 void r8712_free_recvframe_queue(struct  __queue *pframequeue,
130 				 struct  __queue *pfree_recv_queue);
131 int r8712_wlanhdr_to_ethhdr(union recv_frame *precvframe);
132 int recv_func(struct _adapter *padapter, void *pcontext);
133 
get_rxmem(union recv_frame * precvframe)134 static inline u8 *get_rxmem(union recv_frame *precvframe)
135 {
136 	/* always return rx_head... */
137 	if (!precvframe)
138 		return NULL;
139 	return precvframe->u.hdr.rx_head;
140 }
141 
recvframe_pull(union recv_frame * precvframe,sint sz)142 static inline u8 *recvframe_pull(union recv_frame *precvframe, sint sz)
143 {
144 	/* used for extract sz bytes from rx_data, update rx_data and return
145 	 * the updated rx_data to the caller
146 	 */
147 	if (!precvframe)
148 		return NULL;
149 	precvframe->u.hdr.rx_data += sz;
150 	if (precvframe->u.hdr.rx_data > precvframe->u.hdr.rx_tail) {
151 		precvframe->u.hdr.rx_data -= sz;
152 		return NULL;
153 	}
154 	precvframe->u.hdr.len -= sz;
155 	return precvframe->u.hdr.rx_data;
156 }
157 
recvframe_put(union recv_frame * precvframe,sint sz)158 static inline u8 *recvframe_put(union recv_frame *precvframe, sint sz)
159 {
160 	/* used for append sz bytes from ptr to rx_tail, update rx_tail and
161 	 * return the updated rx_tail to the caller
162 	 * after putting, rx_tail must be still larger than rx_end.
163 	 */
164 	if (!precvframe)
165 		return NULL;
166 	precvframe->u.hdr.rx_tail += sz;
167 	if (precvframe->u.hdr.rx_tail > precvframe->u.hdr.rx_end) {
168 		precvframe->u.hdr.rx_tail -= sz;
169 		return NULL;
170 	}
171 	precvframe->u.hdr.len += sz;
172 	return precvframe->u.hdr.rx_tail;
173 }
174 
recvframe_pull_tail(union recv_frame * precvframe,sint sz)175 static inline u8 *recvframe_pull_tail(union recv_frame *precvframe, sint sz)
176 {
177 	/* rmv data from rx_tail (by yitsen)
178 	 * used for extract sz bytes from rx_end, update rx_end and return the
179 	 * updated rx_end to the caller
180 	 * after pulling, rx_end must be still larger than rx_data.
181 	 */
182 	if (!precvframe)
183 		return NULL;
184 	precvframe->u.hdr.rx_tail -= sz;
185 	if (precvframe->u.hdr.rx_tail < precvframe->u.hdr.rx_data) {
186 		precvframe->u.hdr.rx_tail += sz;
187 		return NULL;
188 	}
189 	precvframe->u.hdr.len -= sz;
190 	return precvframe->u.hdr.rx_tail;
191 }
192 
193 struct sta_info;
194 
195 void	_r8712_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv);
196 sint r8712_recvframe_chkmic(struct _adapter *adapter,
197 			    union recv_frame *precvframe);
198 union recv_frame *r8712_decryptor(struct _adapter *adapter,
199 				  union recv_frame *precv_frame);
200 union recv_frame *r8712_recvframe_chk_defrag(struct _adapter *adapter,
201 					     union recv_frame *precv_frame);
202 int r8712_validate_recv_frame(struct _adapter *adapter,
203 			      union recv_frame *precv_frame);
204 union recv_frame *r8712_portctrl(struct _adapter *adapter,
205 				 union recv_frame *precv_frame);
206 
207 #endif
208 
209