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_sdp_tlv {
59 struct hlist_node node;
62 struct nfc_llcp_local {
63 struct list_head list;
68 struct mutex sdp_lock;
70 struct timer_list link_timer;
71 struct sk_buff_head tx_queue;
72 struct work_struct tx_work;
73 struct work_struct rx_work;
74 struct sk_buff *rx_pending;
75 struct work_struct timeout_work;
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 */
86 atomic_t local_sdp_cnt[LLCP_SDP_NUM_SAP];
89 u8 gb[NFC_MAX_GT_LEN];
93 u8 remote_gb[NFC_MAX_GT_LEN];
102 struct mutex sdreq_lock;
103 struct hlist_head pending_sdreqs;
104 struct timer_list sdreq_timer;
105 struct work_struct sdreq_timeout_work;
109 struct llcp_sock_list sockets;
110 struct llcp_sock_list connecting_sockets;
111 struct llcp_sock_list raw_sockets;
114 struct nfc_llcp_sock {
117 struct nfc_llcp_local *local;
121 /* Link parameters */
125 size_t service_name_len;
130 /* Remote link parameters */
140 /* Is the remote peer ready to receive */
143 /* Reserved source SAP */
146 struct sk_buff_head tx_queue;
147 struct sk_buff_head tx_pending_queue;
149 struct list_head accept_queue;
153 struct nfc_llcp_ui_cb {
158 #define nfc_llcp_ui_skb_cb(__skb) ((struct nfc_llcp_ui_cb *)&((__skb)->cb[0]))
160 #define nfc_llcp_sock(sk) ((struct nfc_llcp_sock *) (sk))
161 #define nfc_llcp_dev(sk) (nfc_llcp_sock((sk))->dev)
163 #define LLCP_HEADER_SIZE 2
164 #define LLCP_SEQUENCE_SIZE 1
166 /* LLCP versions: 1.1 is 1.0 plus SDP */
167 #define LLCP_VERSION_10 0x10
168 #define LLCP_VERSION_11 0x11
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
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
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
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
211 void nfc_llcp_sock_link(struct llcp_sock_list *l, struct sock *s);
212 void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *s);
213 struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
214 struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local);
215 int nfc_llcp_local_put(struct nfc_llcp_local *local);
216 u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
217 struct nfc_llcp_sock *sock);
218 u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local);
219 void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap);
220 int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock);
221 void nfc_llcp_send_to_raw_sock(struct nfc_llcp_local *local,
222 struct sk_buff *skb, u8 direction);
225 struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp);
226 void nfc_llcp_sock_free(struct nfc_llcp_sock *sock);
227 void nfc_llcp_accept_unlink(struct sock *sk);
228 void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk);
229 struct sock *nfc_llcp_accept_dequeue(struct sock *sk, struct socket *newsock);
232 int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local,
233 u8 *tlv_array, u16 tlv_array_len);
234 int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock,
235 u8 *tlv_array, u16 tlv_array_len);
238 void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
239 u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length);
240 struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdres_tlv(u8 tid, u8 sap);
241 struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdreq_tlv(u8 tid, char *uri,
243 void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp);
244 void nfc_llcp_free_sdp_tlv_list(struct hlist_head *sdp_head);
245 void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
246 int nfc_llcp_disconnect(struct nfc_llcp_sock *sock);
247 int nfc_llcp_send_symm(struct nfc_dev *dev);
248 int nfc_llcp_send_connect(struct nfc_llcp_sock *sock);
249 int nfc_llcp_send_cc(struct nfc_llcp_sock *sock);
250 int nfc_llcp_send_snl_sdres(struct nfc_llcp_local *local,
251 struct hlist_head *tlv_list, size_t tlvs_len);
252 int nfc_llcp_send_snl_sdreq(struct nfc_llcp_local *local,
253 struct hlist_head *tlv_list, size_t tlvs_len);
254 int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason);
255 int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock);
256 int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
257 struct msghdr *msg, size_t len);
258 int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
259 struct msghdr *msg, size_t len);
260 int nfc_llcp_send_rr(struct nfc_llcp_sock *sock);
263 int __init nfc_llcp_sock_init(void);
264 void nfc_llcp_sock_exit(void);