Commit | Line | Data |
---|---|---|
d646960f SO |
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 | ||
20 | enum 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 | ||
31 | #define LLCP_WKS_NUM_SAP 16 | |
32 | #define LLCP_SDP_NUM_SAP 16 | |
33 | #define LLCP_LOCAL_NUM_SAP 32 | |
34 | #define LLCP_LOCAL_SAP_OFFSET (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP) | |
35 | #define LLCP_MAX_SAP (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP + LLCP_LOCAL_NUM_SAP) | |
36 | ||
37 | struct nfc_llcp_sock; | |
38 | ||
39 | struct nfc_llcp_local { | |
40 | struct list_head list; | |
41 | struct nfc_dev *dev; | |
42 | ||
43 | struct mutex sdp_lock; | |
44 | struct mutex socket_lock; | |
45 | ||
46 | struct timer_list link_timer; | |
47 | struct sk_buff_head tx_queue; | |
48 | struct workqueue_struct *tx_wq; | |
49 | struct work_struct tx_work; | |
50 | struct workqueue_struct *rx_wq; | |
51 | struct work_struct rx_work; | |
52 | struct sk_buff *rx_pending; | |
53 | struct workqueue_struct *timeout_wq; | |
54 | struct work_struct timeout_work; | |
55 | ||
56 | u32 target_idx; | |
57 | u8 rf_mode; | |
58 | u8 comm_mode; | |
59 | unsigned long local_wks; /* Well known services */ | |
60 | unsigned long local_sdp; /* Local services */ | |
61 | unsigned long local_sap; /* Local SAPs, not available for discovery */ | |
62 | ||
63 | /* local */ | |
64 | u8 gb[NFC_MAX_GT_LEN]; | |
65 | u8 gb_len; | |
66 | ||
67 | /* remote */ | |
68 | u8 remote_gb[NFC_MAX_GT_LEN]; | |
69 | u8 remote_gb_len; | |
70 | ||
71 | u8 remote_version; | |
72 | u16 remote_miu; | |
73 | u16 remote_lto; | |
74 | u8 remote_opt; | |
75 | u16 remote_wks; | |
76 | u8 remote_rw; | |
77 | ||
78 | /* sockets array */ | |
79 | struct nfc_llcp_sock *sockets[LLCP_MAX_SAP]; | |
80 | }; | |
81 | ||
82 | struct nfc_llcp_sock { | |
83 | struct sock sk; | |
84 | struct list_head list; | |
85 | struct nfc_dev *dev; | |
86 | struct nfc_llcp_local *local; | |
87 | u32 target_idx; | |
88 | u32 nfc_protocol; | |
89 | ||
90 | u8 ssap; | |
91 | u8 dsap; | |
92 | char *service_name; | |
93 | size_t service_name_len; | |
94 | ||
95 | /* Link variables */ | |
96 | u8 send_n; | |
97 | u8 send_ack_n; | |
98 | u8 recv_n; | |
99 | u8 recv_ack_n; | |
100 | ||
101 | /* Is the remote peer ready to receive */ | |
102 | u8 remote_ready; | |
103 | ||
104 | struct sk_buff_head tx_queue; | |
105 | struct sk_buff_head tx_pending_queue; | |
106 | struct sk_buff_head tx_backlog_queue; | |
107 | ||
108 | struct list_head accept_queue; | |
109 | struct sock *parent; | |
110 | }; | |
111 | ||
112 | #define nfc_llcp_sock(sk) ((struct nfc_llcp_sock *) (sk)) | |
113 | #define nfc_llcp_dev(sk) (nfc_llcp_sock((sk))->dev) | |
114 | ||
115 | #define LLCP_HEADER_SIZE 2 | |
116 | #define LLCP_SEQUENCE_SIZE 1 | |
117 | ||
118 | /* LLCP versions: 1.1 is 1.0 plus SDP */ | |
119 | #define LLCP_VERSION_10 0x10 | |
120 | #define LLCP_VERSION_11 0x11 | |
121 | ||
122 | /* LLCP PDU types */ | |
123 | #define LLCP_PDU_SYMM 0x0 | |
124 | #define LLCP_PDU_PAX 0x1 | |
125 | #define LLCP_PDU_AGF 0x2 | |
126 | #define LLCP_PDU_UI 0x3 | |
127 | #define LLCP_PDU_CONNECT 0x4 | |
128 | #define LLCP_PDU_DISC 0x5 | |
129 | #define LLCP_PDU_CC 0x6 | |
130 | #define LLCP_PDU_DM 0x7 | |
131 | #define LLCP_PDU_FRMR 0x8 | |
132 | #define LLCP_PDU_SNL 0x9 | |
133 | #define LLCP_PDU_I 0xc | |
134 | #define LLCP_PDU_RR 0xd | |
135 | #define LLCP_PDU_RNR 0xe | |
136 | ||
137 | /* Parameters TLV types */ | |
138 | #define LLCP_TLV_VERSION 0x1 | |
139 | #define LLCP_TLV_MIUX 0x2 | |
140 | #define LLCP_TLV_WKS 0x3 | |
141 | #define LLCP_TLV_LTO 0x4 | |
142 | #define LLCP_TLV_RW 0x5 | |
143 | #define LLCP_TLV_SN 0x6 | |
144 | #define LLCP_TLV_OPT 0x7 | |
145 | #define LLCP_TLV_SDREQ 0x8 | |
146 | #define LLCP_TLV_SDRES 0x9 | |
147 | #define LLCP_TLV_MAX 0xa | |
148 | ||
149 | /* Well known LLCP SAP */ | |
150 | #define LLCP_SAP_SDP 0x1 | |
151 | #define LLCP_SAP_IP 0x2 | |
152 | #define LLCP_SAP_OBEX 0x3 | |
153 | #define LLCP_SAP_SNEP 0x4 | |
154 | #define LLCP_SAP_MAX 0xff | |
155 | ||
156 | /* Disconnection reason code */ | |
157 | #define LLCP_DM_DISC 0x00 | |
158 | #define LLCP_DM_NOCONN 0x01 | |
159 | #define LLCP_DM_NOBOUND 0x02 | |
160 | #define LLCP_DM_REJ 0x03 | |
161 | ||
162 | ||
163 | struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev); | |
164 | u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local, | |
165 | struct nfc_llcp_sock *sock); | |
166 | u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local); | |
167 | void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap); | |
d094afa1 | 168 | int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock); |
d646960f SO |
169 | |
170 | /* Sock API */ | |
171 | struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp); | |
172 | void nfc_llcp_sock_free(struct nfc_llcp_sock *sock); | |
173 | void nfc_llcp_accept_unlink(struct sock *sk); | |
174 | void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk); | |
175 | struct sock *nfc_llcp_accept_dequeue(struct sock *sk, struct socket *newsock); | |
176 | ||
177 | /* TLV API */ | |
178 | int nfc_llcp_parse_tlv(struct nfc_llcp_local *local, | |
179 | u8 *tlv_array, u16 tlv_array_len); | |
180 | ||
181 | /* Commands API */ | |
182 | void nfc_llcp_recv(void *data, struct sk_buff *skb, int err); | |
183 | u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length); | |
184 | void nfc_llcp_recv(void *data, struct sk_buff *skb, int err); | |
185 | int nfc_llcp_disconnect(struct nfc_llcp_sock *sock); | |
186 | int nfc_llcp_send_symm(struct nfc_dev *dev); | |
187 | int nfc_llcp_send_connect(struct nfc_llcp_sock *sock); | |
188 | int nfc_llcp_send_cc(struct nfc_llcp_sock *sock); | |
189 | int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason); | |
190 | int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock); | |
53a0ac2e SO |
191 | int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock, |
192 | struct msghdr *msg, size_t len); | |
d094afa1 | 193 | int nfc_llcp_send_rr(struct nfc_llcp_sock *sock); |
d646960f SO |
194 | |
195 | /* Socket API */ | |
196 | int __init nfc_llcp_sock_init(void); | |
197 | void nfc_llcp_sock_exit(void); |