2 * Copyright (C) 2011 Intel Corporation. All rights reserved.
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.
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.
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.
21 LLCP_CONNECTED = 1, /* wait_for_packet() wants that */
27 #define LLCP_DEFAULT_LTO 100
28 #define LLCP_DEFAULT_RW 1
29 #define LLCP_DEFAULT_MIU 128
31 #define LLCP_MAX_LTO 0xff
32 #define LLCP_MAX_RW 15
33 #define LLCP_MAX_MIUX 0x7ff
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)
40 #define LLCP_SDP_UNBOUND (LLCP_MAX_SAP + 1)
44 struct llcp_sock_list {
45 struct hlist_head head;
49 struct nfc_llcp_local {
50 struct list_head list;
55 struct mutex sdp_lock;
57 struct timer_list link_timer;
58 struct sk_buff_head tx_queue;
59 struct work_struct tx_work;
60 struct work_struct rx_work;
61 struct sk_buff *rx_pending;
62 struct work_struct timeout_work;
70 unsigned long local_wks; /* Well known services */
71 unsigned long local_sdp; /* Local services */
72 unsigned long local_sap; /* Local SAPs, not available for discovery */
73 atomic_t local_sdp_cnt[LLCP_SDP_NUM_SAP];
76 u8 gb[NFC_MAX_GT_LEN];
80 u8 remote_gb[NFC_MAX_GT_LEN];
90 struct llcp_sock_list sockets;
91 struct llcp_sock_list connecting_sockets;
92 struct llcp_sock_list raw_sockets;
95 struct nfc_llcp_sock {
98 struct nfc_llcp_local *local;
102 /* Link parameters */
106 size_t service_name_len;
116 /* Is the remote peer ready to receive */
119 /* Reserved source SAP */
122 struct sk_buff_head tx_queue;
123 struct sk_buff_head tx_pending_queue;
125 struct list_head accept_queue;
129 struct nfc_llcp_ui_cb {
134 #define nfc_llcp_ui_skb_cb(__skb) ((struct nfc_llcp_ui_cb *)&((__skb)->cb[0]))
136 #define nfc_llcp_sock(sk) ((struct nfc_llcp_sock *) (sk))
137 #define nfc_llcp_dev(sk) (nfc_llcp_sock((sk))->dev)
139 #define LLCP_HEADER_SIZE 2
140 #define LLCP_SEQUENCE_SIZE 1
142 /* LLCP versions: 1.1 is 1.0 plus SDP */
143 #define LLCP_VERSION_10 0x10
144 #define LLCP_VERSION_11 0x11
147 #define LLCP_PDU_SYMM 0x0
148 #define LLCP_PDU_PAX 0x1
149 #define LLCP_PDU_AGF 0x2
150 #define LLCP_PDU_UI 0x3
151 #define LLCP_PDU_CONNECT 0x4
152 #define LLCP_PDU_DISC 0x5
153 #define LLCP_PDU_CC 0x6
154 #define LLCP_PDU_DM 0x7
155 #define LLCP_PDU_FRMR 0x8
156 #define LLCP_PDU_SNL 0x9
157 #define LLCP_PDU_I 0xc
158 #define LLCP_PDU_RR 0xd
159 #define LLCP_PDU_RNR 0xe
161 /* Parameters TLV types */
162 #define LLCP_TLV_VERSION 0x1
163 #define LLCP_TLV_MIUX 0x2
164 #define LLCP_TLV_WKS 0x3
165 #define LLCP_TLV_LTO 0x4
166 #define LLCP_TLV_RW 0x5
167 #define LLCP_TLV_SN 0x6
168 #define LLCP_TLV_OPT 0x7
169 #define LLCP_TLV_SDREQ 0x8
170 #define LLCP_TLV_SDRES 0x9
171 #define LLCP_TLV_MAX 0xa
173 /* Well known LLCP SAP */
174 #define LLCP_SAP_SDP 0x1
175 #define LLCP_SAP_IP 0x2
176 #define LLCP_SAP_OBEX 0x3
177 #define LLCP_SAP_SNEP 0x4
178 #define LLCP_SAP_MAX 0xff
180 /* Disconnection reason code */
181 #define LLCP_DM_DISC 0x00
182 #define LLCP_DM_NOCONN 0x01
183 #define LLCP_DM_NOBOUND 0x02
184 #define LLCP_DM_REJ 0x03
187 void nfc_llcp_sock_link(struct llcp_sock_list *l, struct sock *s);
188 void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *s);
189 struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
190 struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local);
191 int nfc_llcp_local_put(struct nfc_llcp_local *local);
192 u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
193 struct nfc_llcp_sock *sock);
194 u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local);
195 void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap);
196 int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock);
197 void nfc_llcp_send_to_raw_sock(struct nfc_llcp_local *local,
198 struct sk_buff *skb, u8 direction);
201 struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp);
202 void nfc_llcp_sock_free(struct nfc_llcp_sock *sock);
203 void nfc_llcp_accept_unlink(struct sock *sk);
204 void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk);
205 struct sock *nfc_llcp_accept_dequeue(struct sock *sk, struct socket *newsock);
208 int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local,
209 u8 *tlv_array, u16 tlv_array_len);
210 int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock,
211 u8 *tlv_array, u16 tlv_array_len);
214 void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
215 u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length);
216 void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
217 int nfc_llcp_disconnect(struct nfc_llcp_sock *sock);
218 int nfc_llcp_send_symm(struct nfc_dev *dev);
219 int nfc_llcp_send_connect(struct nfc_llcp_sock *sock);
220 int nfc_llcp_send_cc(struct nfc_llcp_sock *sock);
221 int nfc_llcp_send_snl(struct nfc_llcp_local *local, u8 tid, u8 sap);
222 int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason);
223 int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock);
224 int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
225 struct msghdr *msg, size_t len);
226 int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
227 struct msghdr *msg, size_t len);
228 int nfc_llcp_send_rr(struct nfc_llcp_sock *sock);
231 int __init nfc_llcp_sock_init(void);
232 void nfc_llcp_sock_exit(void);