NFC: pn533: Use dynamic debug for pn533 hex dumps
[deliverable/linux.git] / net / nfc / llcp / llcp.h
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1/*
2 * Copyright (C) 2011 Intel Corporation. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the
16 * Free Software Foundation, Inc.,
17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 */
19
20enum llcp_state {
21 LLCP_CONNECTED = 1, /* wait_for_packet() wants that */
22 LLCP_CLOSED,
23 LLCP_BOUND,
24 LLCP_LISTEN,
25};
26
27#define LLCP_DEFAULT_LTO 100
28#define LLCP_DEFAULT_RW 1
29#define LLCP_DEFAULT_MIU 128
30
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31#define LLCP_MAX_LTO 0xff
32#define LLCP_MAX_RW 15
33#define LLCP_MAX_MIUX 0x7ff
34
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35#define LLCP_WKS_NUM_SAP 16
36#define LLCP_SDP_NUM_SAP 16
37#define LLCP_LOCAL_NUM_SAP 32
38#define LLCP_LOCAL_SAP_OFFSET (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP)
39#define LLCP_MAX_SAP (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP + LLCP_LOCAL_NUM_SAP)
8f50020e 40#define LLCP_SDP_UNBOUND (LLCP_MAX_SAP + 1)
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41
42struct nfc_llcp_sock;
43
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44struct llcp_sock_list {
45 struct hlist_head head;
46 rwlock_t lock;
47};
48
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49struct nfc_llcp_sdp_tlv {
50 u8 *tlv;
51 u8 tlv_len;
52
53 char *uri;
54 u8 tid;
55 u8 sap;
56
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57 unsigned long time;
58
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59 struct hlist_node node;
60};
61
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62struct nfc_llcp_local {
63 struct list_head list;
64 struct nfc_dev *dev;
65
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66 struct kref ref;
67
d646960f 68 struct mutex sdp_lock;
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69
70 struct timer_list link_timer;
71 struct sk_buff_head tx_queue;
d646960f 72 struct work_struct tx_work;
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73 struct work_struct rx_work;
74 struct sk_buff *rx_pending;
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75 struct work_struct timeout_work;
76
77 u32 target_idx;
78 u8 rf_mode;
79 u8 comm_mode;
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80 u8 lto;
81 u8 rw;
82 __be16 miux;
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83 unsigned long local_wks; /* Well known services */
84 unsigned long local_sdp; /* Local services */
85 unsigned long local_sap; /* Local SAPs, not available for discovery */
8f50020e 86 atomic_t local_sdp_cnt[LLCP_SDP_NUM_SAP];
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87
88 /* local */
89 u8 gb[NFC_MAX_GT_LEN];
90 u8 gb_len;
91
92 /* remote */
93 u8 remote_gb[NFC_MAX_GT_LEN];
94 u8 remote_gb_len;
95
96 u8 remote_version;
97 u16 remote_miu;
98 u16 remote_lto;
99 u8 remote_opt;
100 u16 remote_wks;
d646960f 101
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102 struct mutex sdreq_lock;
103 struct hlist_head pending_sdreqs;
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104 struct timer_list sdreq_timer;
105 struct work_struct sdreq_timeout_work;
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106 u8 sdreq_next_tid;
107
d646960f 108 /* sockets array */
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109 struct llcp_sock_list sockets;
110 struct llcp_sock_list connecting_sockets;
4463523b 111 struct llcp_sock_list raw_sockets;
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112};
113
114struct nfc_llcp_sock {
115 struct sock sk;
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116 struct nfc_dev *dev;
117 struct nfc_llcp_local *local;
118 u32 target_idx;
119 u32 nfc_protocol;
120
7a06e586 121 /* Link parameters */
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122 u8 ssap;
123 u8 dsap;
124 char *service_name;
125 size_t service_name_len;
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126 u8 rw;
127 u16 miux;
128
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129
130 /* Remote link parameters */
131 u8 remote_rw;
132 u16 remote_miu;
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133
134 /* Link variables */
135 u8 send_n;
136 u8 send_ack_n;
137 u8 recv_n;
138 u8 recv_ack_n;
139
140 /* Is the remote peer ready to receive */
141 u8 remote_ready;
142
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143 /* Reserved source SAP */
144 u8 reserved_ssap;
145
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146 struct sk_buff_head tx_queue;
147 struct sk_buff_head tx_pending_queue;
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148
149 struct list_head accept_queue;
150 struct sock *parent;
151};
152
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153struct nfc_llcp_ui_cb {
154 __u8 dsap;
155 __u8 ssap;
156};
157
158#define nfc_llcp_ui_skb_cb(__skb) ((struct nfc_llcp_ui_cb *)&((__skb)->cb[0]))
159
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160#define nfc_llcp_sock(sk) ((struct nfc_llcp_sock *) (sk))
161#define nfc_llcp_dev(sk) (nfc_llcp_sock((sk))->dev)
162
163#define LLCP_HEADER_SIZE 2
164#define LLCP_SEQUENCE_SIZE 1
165
166/* LLCP versions: 1.1 is 1.0 plus SDP */
167#define LLCP_VERSION_10 0x10
168#define LLCP_VERSION_11 0x11
169
170/* LLCP PDU types */
171#define LLCP_PDU_SYMM 0x0
172#define LLCP_PDU_PAX 0x1
173#define LLCP_PDU_AGF 0x2
174#define LLCP_PDU_UI 0x3
175#define LLCP_PDU_CONNECT 0x4
176#define LLCP_PDU_DISC 0x5
177#define LLCP_PDU_CC 0x6
178#define LLCP_PDU_DM 0x7
179#define LLCP_PDU_FRMR 0x8
180#define LLCP_PDU_SNL 0x9
181#define LLCP_PDU_I 0xc
182#define LLCP_PDU_RR 0xd
183#define LLCP_PDU_RNR 0xe
184
185/* Parameters TLV types */
186#define LLCP_TLV_VERSION 0x1
187#define LLCP_TLV_MIUX 0x2
188#define LLCP_TLV_WKS 0x3
189#define LLCP_TLV_LTO 0x4
190#define LLCP_TLV_RW 0x5
191#define LLCP_TLV_SN 0x6
192#define LLCP_TLV_OPT 0x7
193#define LLCP_TLV_SDREQ 0x8
194#define LLCP_TLV_SDRES 0x9
195#define LLCP_TLV_MAX 0xa
196
197/* Well known LLCP SAP */
198#define LLCP_SAP_SDP 0x1
199#define LLCP_SAP_IP 0x2
200#define LLCP_SAP_OBEX 0x3
201#define LLCP_SAP_SNEP 0x4
202#define LLCP_SAP_MAX 0xff
203
204/* Disconnection reason code */
205#define LLCP_DM_DISC 0x00
206#define LLCP_DM_NOCONN 0x01
207#define LLCP_DM_NOBOUND 0x02
208#define LLCP_DM_REJ 0x03
209
210
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211void nfc_llcp_sock_link(struct llcp_sock_list *l, struct sock *s);
212void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *s);
d646960f 213struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
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214struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local);
215int nfc_llcp_local_put(struct nfc_llcp_local *local);
d646960f 216u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
427a2eb1 217 struct nfc_llcp_sock *sock);
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218u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local);
219void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap);
d094afa1 220int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock);
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221void nfc_llcp_send_to_raw_sock(struct nfc_llcp_local *local,
222 struct sk_buff *skb, u8 direction);
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223
224/* Sock API */
225struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp);
226void nfc_llcp_sock_free(struct nfc_llcp_sock *sock);
227void nfc_llcp_accept_unlink(struct sock *sk);
228void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk);
229struct sock *nfc_llcp_accept_dequeue(struct sock *sk, struct socket *newsock);
230
231/* TLV API */
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232int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local,
233 u8 *tlv_array, u16 tlv_array_len);
234int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock,
235 u8 *tlv_array, u16 tlv_array_len);
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236
237/* Commands API */
238void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
239u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length);
e0ae7bac 240struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdres_tlv(u8 tid, u8 sap);
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241struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdreq_tlv(u8 tid, char *uri,
242 size_t uri_len);
e0ae7bac 243void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp);
d9b8d8e1 244void nfc_llcp_free_sdp_tlv_list(struct hlist_head *sdp_head);
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245void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
246int nfc_llcp_disconnect(struct nfc_llcp_sock *sock);
247int nfc_llcp_send_symm(struct nfc_dev *dev);
248int nfc_llcp_send_connect(struct nfc_llcp_sock *sock);
249int nfc_llcp_send_cc(struct nfc_llcp_sock *sock);
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250int nfc_llcp_send_snl_sdres(struct nfc_llcp_local *local,
251 struct hlist_head *tlv_list, size_t tlvs_len);
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252int nfc_llcp_send_snl_sdreq(struct nfc_llcp_local *local,
253 struct hlist_head *tlv_list, size_t tlvs_len);
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254int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason);
255int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock);
53a0ac2e 256int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
427a2eb1 257 struct msghdr *msg, size_t len);
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258int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
259 struct msghdr *msg, size_t len);
d094afa1 260int nfc_llcp_send_rr(struct nfc_llcp_sock *sock);
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261
262/* Socket API */
263int __init nfc_llcp_sock_init(void);
264void nfc_llcp_sock_exit(void);
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