1
2
3
4
5
6enum llcp_state {
7 LLCP_CONNECTED = 1,
8 LLCP_CONNECTING,
9 LLCP_DISCONNECTING,
10 LLCP_CLOSED,
11 LLCP_BOUND,
12 LLCP_LISTEN,
13};
14
15#define LLCP_DEFAULT_LTO 100
16#define LLCP_DEFAULT_RW 1
17#define LLCP_DEFAULT_MIU 128
18
19#define LLCP_MAX_LTO 0xff
20#define LLCP_MAX_RW 15
21#define LLCP_MAX_MIUX 0x7ff
22#define LLCP_MAX_MIU (LLCP_MAX_MIUX + 128)
23
24#define LLCP_WKS_NUM_SAP 16
25#define LLCP_SDP_NUM_SAP 16
26#define LLCP_LOCAL_NUM_SAP 32
27#define LLCP_LOCAL_SAP_OFFSET (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP)
28#define LLCP_MAX_SAP (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP + LLCP_LOCAL_NUM_SAP)
29#define LLCP_SDP_UNBOUND (LLCP_MAX_SAP + 1)
30
31struct nfc_llcp_sock;
32
33struct llcp_sock_list {
34 struct hlist_head head;
35 rwlock_t lock;
36};
37
38struct nfc_llcp_sdp_tlv {
39 u8 *tlv;
40 u8 tlv_len;
41
42 char *uri;
43 u8 tid;
44 u8 sap;
45
46 unsigned long time;
47
48 struct hlist_node node;
49};
50
51struct nfc_llcp_local {
52 struct list_head list;
53 struct nfc_dev *dev;
54
55 struct kref ref;
56
57 struct mutex sdp_lock;
58
59 struct timer_list link_timer;
60 struct sk_buff_head tx_queue;
61 struct work_struct tx_work;
62 struct work_struct rx_work;
63 struct sk_buff *rx_pending;
64 struct work_struct timeout_work;
65
66 u32 target_idx;
67 u8 rf_mode;
68 u8 comm_mode;
69 u8 lto;
70 u8 rw;
71 __be16 miux;
72 unsigned long local_wks;
73 unsigned long local_sdp;
74 unsigned long local_sap;
75 atomic_t local_sdp_cnt[LLCP_SDP_NUM_SAP];
76
77
78 u8 gb[NFC_MAX_GT_LEN];
79 u8 gb_len;
80
81
82 u8 remote_gb[NFC_MAX_GT_LEN];
83 u8 remote_gb_len;
84
85 u8 remote_version;
86 u16 remote_miu;
87 u16 remote_lto;
88 u8 remote_opt;
89 u16 remote_wks;
90
91 struct mutex sdreq_lock;
92 struct hlist_head pending_sdreqs;
93 struct timer_list sdreq_timer;
94 struct work_struct sdreq_timeout_work;
95 u8 sdreq_next_tid;
96
97
98 struct llcp_sock_list sockets;
99 struct llcp_sock_list connecting_sockets;
100 struct llcp_sock_list raw_sockets;
101};
102
103struct nfc_llcp_sock {
104 struct sock sk;
105 struct nfc_dev *dev;
106 struct nfc_llcp_local *local;
107 u32 target_idx;
108 u32 nfc_protocol;
109
110
111 u8 ssap;
112 u8 dsap;
113 char *service_name;
114 size_t service_name_len;
115 u8 rw;
116 __be16 miux;
117
118
119
120 u8 remote_rw;
121 u16 remote_miu;
122
123
124 u8 send_n;
125 u8 send_ack_n;
126 u8 recv_n;
127 u8 recv_ack_n;
128
129
130 u8 remote_ready;
131
132
133 u8 reserved_ssap;
134
135 struct sk_buff_head tx_queue;
136 struct sk_buff_head tx_pending_queue;
137
138 struct list_head accept_queue;
139 struct sock *parent;
140};
141
142struct nfc_llcp_ui_cb {
143 __u8 dsap;
144 __u8 ssap;
145};
146
147#define nfc_llcp_ui_skb_cb(__skb) ((struct nfc_llcp_ui_cb *)&((__skb)->cb[0]))
148
149#define nfc_llcp_sock(sk) ((struct nfc_llcp_sock *) (sk))
150#define nfc_llcp_dev(sk) (nfc_llcp_sock((sk))->dev)
151
152#define LLCP_HEADER_SIZE 2
153#define LLCP_SEQUENCE_SIZE 1
154#define LLCP_AGF_PDU_HEADER_SIZE 2
155
156
157#define LLCP_VERSION_10 0x10
158#define LLCP_VERSION_11 0x11
159
160
161#define LLCP_PDU_SYMM 0x0
162#define LLCP_PDU_PAX 0x1
163#define LLCP_PDU_AGF 0x2
164#define LLCP_PDU_UI 0x3
165#define LLCP_PDU_CONNECT 0x4
166#define LLCP_PDU_DISC 0x5
167#define LLCP_PDU_CC 0x6
168#define LLCP_PDU_DM 0x7
169#define LLCP_PDU_FRMR 0x8
170#define LLCP_PDU_SNL 0x9
171#define LLCP_PDU_I 0xc
172#define LLCP_PDU_RR 0xd
173#define LLCP_PDU_RNR 0xe
174
175
176#define LLCP_TLV_VERSION 0x1
177#define LLCP_TLV_MIUX 0x2
178#define LLCP_TLV_WKS 0x3
179#define LLCP_TLV_LTO 0x4
180#define LLCP_TLV_RW 0x5
181#define LLCP_TLV_SN 0x6
182#define LLCP_TLV_OPT 0x7
183#define LLCP_TLV_SDREQ 0x8
184#define LLCP_TLV_SDRES 0x9
185#define LLCP_TLV_MAX 0xa
186
187
188#define LLCP_SAP_SDP 0x1
189#define LLCP_SAP_IP 0x2
190#define LLCP_SAP_OBEX 0x3
191#define LLCP_SAP_SNEP 0x4
192#define LLCP_SAP_MAX 0xff
193
194
195#define LLCP_DM_DISC 0x00
196#define LLCP_DM_NOCONN 0x01
197#define LLCP_DM_NOBOUND 0x02
198#define LLCP_DM_REJ 0x03
199
200
201void nfc_llcp_sock_link(struct llcp_sock_list *l, struct sock *s);
202void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *s);
203void nfc_llcp_socket_remote_param_init(struct nfc_llcp_sock *sock);
204struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
205struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local);
206int nfc_llcp_local_put(struct nfc_llcp_local *local);
207u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
208 struct nfc_llcp_sock *sock);
209u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local);
210void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap);
211int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock);
212void nfc_llcp_send_to_raw_sock(struct nfc_llcp_local *local,
213 struct sk_buff *skb, u8 direction);
214
215
216struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp, int kern);
217void nfc_llcp_sock_free(struct nfc_llcp_sock *sock);
218void nfc_llcp_accept_unlink(struct sock *sk);
219void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk);
220struct sock *nfc_llcp_accept_dequeue(struct sock *sk, struct socket *newsock);
221
222
223int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local,
224 u8 *tlv_array, u16 tlv_array_len);
225int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock,
226 u8 *tlv_array, u16 tlv_array_len);
227
228
229void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
230u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length);
231struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdres_tlv(u8 tid, u8 sap);
232struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdreq_tlv(u8 tid, char *uri,
233 size_t uri_len);
234void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp);
235void nfc_llcp_free_sdp_tlv_list(struct hlist_head *sdp_head);
236void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
237int nfc_llcp_send_symm(struct nfc_dev *dev);
238int nfc_llcp_send_connect(struct nfc_llcp_sock *sock);
239int nfc_llcp_send_cc(struct nfc_llcp_sock *sock);
240int nfc_llcp_send_snl_sdres(struct nfc_llcp_local *local,
241 struct hlist_head *tlv_list, size_t tlvs_len);
242int nfc_llcp_send_snl_sdreq(struct nfc_llcp_local *local,
243 struct hlist_head *tlv_list, size_t tlvs_len);
244int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason);
245int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock);
246int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
247 struct msghdr *msg, size_t len);
248int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
249 struct msghdr *msg, size_t len);
250int nfc_llcp_send_rr(struct nfc_llcp_sock *sock);
251
252
253int __init nfc_llcp_sock_init(void);
254void nfc_llcp_sock_exit(void);
255
