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 */
28 #define LLCP_DEFAULT_LTO 100
29 #define LLCP_DEFAULT_RW 1
30 #define LLCP_DEFAULT_MIU 128
32 #define LLCP_MAX_LTO 0xff
33 #define LLCP_MAX_RW 15
34 #define LLCP_MAX_MIUX 0x7ff
35 #define LLCP_MAX_MIU (LLCP_MAX_MIUX + 128)
37 #define LLCP_WKS_NUM_SAP 16
38 #define LLCP_SDP_NUM_SAP 16
39 #define LLCP_LOCAL_NUM_SAP 32
40 #define LLCP_LOCAL_SAP_OFFSET (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP)
41 #define LLCP_MAX_SAP (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP + LLCP_LOCAL_NUM_SAP)
42 #define LLCP_SDP_UNBOUND (LLCP_MAX_SAP + 1)
46 struct llcp_sock_list {
47 struct hlist_head head;
51 struct nfc_llcp_sdp_tlv {
61 struct hlist_node node;
64 struct nfc_llcp_local {
65 struct list_head list;
70 struct mutex sdp_lock;
72 struct timer_list link_timer;
73 struct sk_buff_head tx_queue;
74 struct work_struct tx_work;
75 struct work_struct rx_work;
76 struct sk_buff *rx_pending;
77 struct work_struct timeout_work;
85 unsigned long local_wks; /* Well known services */
86 unsigned long local_sdp; /* Local services */
87 unsigned long local_sap; /* Local SAPs, not available for discovery */
88 atomic_t local_sdp_cnt[LLCP_SDP_NUM_SAP];
91 u8 gb[NFC_MAX_GT_LEN];
95 u8 remote_gb[NFC_MAX_GT_LEN];
104 struct mutex sdreq_lock;
105 struct hlist_head pending_sdreqs;
106 struct timer_list sdreq_timer;
107 struct work_struct sdreq_timeout_work;
111 struct llcp_sock_list sockets;
112 struct llcp_sock_list connecting_sockets;
113 struct llcp_sock_list raw_sockets;
116 struct nfc_llcp_sock {
119 struct nfc_llcp_local *local;
123 /* Link parameters */
127 size_t service_name_len;
132 /* Remote link parameters */
142 /* Is the remote peer ready to receive */
145 /* Reserved source SAP */
148 struct sk_buff_head tx_queue;
149 struct sk_buff_head tx_pending_queue;
151 struct list_head accept_queue;
155 struct nfc_llcp_ui_cb {
160 #define nfc_llcp_ui_skb_cb(__skb) ((struct nfc_llcp_ui_cb *)&((__skb)->cb[0]))
162 #define nfc_llcp_sock(sk) ((struct nfc_llcp_sock *) (sk))
163 #define nfc_llcp_dev(sk) (nfc_llcp_sock((sk))->dev)
165 #define LLCP_HEADER_SIZE 2
166 #define LLCP_SEQUENCE_SIZE 1
167 #define LLCP_AGF_PDU_HEADER_SIZE 2
169 /* LLCP versions: 1.1 is 1.0 plus SDP */
170 #define LLCP_VERSION_10 0x10
171 #define LLCP_VERSION_11 0x11
174 #define LLCP_PDU_SYMM 0x0
175 #define LLCP_PDU_PAX 0x1
176 #define LLCP_PDU_AGF 0x2
177 #define LLCP_PDU_UI 0x3
178 #define LLCP_PDU_CONNECT 0x4
179 #define LLCP_PDU_DISC 0x5
180 #define LLCP_PDU_CC 0x6
181 #define LLCP_PDU_DM 0x7
182 #define LLCP_PDU_FRMR 0x8
183 #define LLCP_PDU_SNL 0x9
184 #define LLCP_PDU_I 0xc
185 #define LLCP_PDU_RR 0xd
186 #define LLCP_PDU_RNR 0xe
188 /* Parameters TLV types */
189 #define LLCP_TLV_VERSION 0x1
190 #define LLCP_TLV_MIUX 0x2
191 #define LLCP_TLV_WKS 0x3
192 #define LLCP_TLV_LTO 0x4
193 #define LLCP_TLV_RW 0x5
194 #define LLCP_TLV_SN 0x6
195 #define LLCP_TLV_OPT 0x7
196 #define LLCP_TLV_SDREQ 0x8
197 #define LLCP_TLV_SDRES 0x9
198 #define LLCP_TLV_MAX 0xa
200 /* Well known LLCP SAP */
201 #define LLCP_SAP_SDP 0x1
202 #define LLCP_SAP_IP 0x2
203 #define LLCP_SAP_OBEX 0x3
204 #define LLCP_SAP_SNEP 0x4
205 #define LLCP_SAP_MAX 0xff
207 /* Disconnection reason code */
208 #define LLCP_DM_DISC 0x00
209 #define LLCP_DM_NOCONN 0x01
210 #define LLCP_DM_NOBOUND 0x02
211 #define LLCP_DM_REJ 0x03
214 void nfc_llcp_sock_link(struct llcp_sock_list *l, struct sock *s);
215 void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *s);
216 void nfc_llcp_socket_remote_param_init(struct nfc_llcp_sock *sock);
217 struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
218 struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local);
219 int nfc_llcp_local_put(struct nfc_llcp_local *local);
220 u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
221 struct nfc_llcp_sock *sock);
222 u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local);
223 void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap);
224 int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock);
225 void nfc_llcp_send_to_raw_sock(struct nfc_llcp_local *local,
226 struct sk_buff *skb, u8 direction);
229 struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp);
230 void nfc_llcp_sock_free(struct nfc_llcp_sock *sock);
231 void nfc_llcp_accept_unlink(struct sock *sk);
232 void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk);
233 struct sock *nfc_llcp_accept_dequeue(struct sock *sk, struct socket *newsock);
236 int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local,
237 u8 *tlv_array, u16 tlv_array_len);
238 int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock,
239 u8 *tlv_array, u16 tlv_array_len);
242 void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
243 u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length);
244 struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdres_tlv(u8 tid, u8 sap);
245 struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdreq_tlv(u8 tid, char *uri,
247 void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp);
248 void nfc_llcp_free_sdp_tlv_list(struct hlist_head *sdp_head);
249 void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
250 int nfc_llcp_disconnect(struct nfc_llcp_sock *sock);
251 int nfc_llcp_send_symm(struct nfc_dev *dev);
252 int nfc_llcp_send_connect(struct nfc_llcp_sock *sock);
253 int nfc_llcp_send_cc(struct nfc_llcp_sock *sock);
254 int nfc_llcp_send_snl_sdres(struct nfc_llcp_local *local,
255 struct hlist_head *tlv_list, size_t tlvs_len);
256 int nfc_llcp_send_snl_sdreq(struct nfc_llcp_local *local,
257 struct hlist_head *tlv_list, size_t tlvs_len);
258 int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason);
259 int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock);
260 int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
261 struct msghdr *msg, size_t len);
262 int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
263 struct msghdr *msg, size_t len);
264 int nfc_llcp_send_rr(struct nfc_llcp_sock *sock);
267 int __init nfc_llcp_sock_init(void);
268 void nfc_llcp_sock_exit(void);