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 {
57 struct hlist_node node;
60 struct nfc_llcp_local {
61 struct list_head list;
66 struct mutex sdp_lock;
68 struct timer_list link_timer;
69 struct sk_buff_head tx_queue;
70 struct work_struct tx_work;
71 struct work_struct rx_work;
72 struct sk_buff *rx_pending;
73 struct work_struct timeout_work;
81 unsigned long local_wks; /* Well known services */
82 unsigned long local_sdp; /* Local services */
83 unsigned long local_sap; /* Local SAPs, not available for discovery */
84 atomic_t local_sdp_cnt[LLCP_SDP_NUM_SAP];
87 u8 gb[NFC_MAX_GT_LEN];
91 u8 remote_gb[NFC_MAX_GT_LEN];
101 struct llcp_sock_list sockets;
102 struct llcp_sock_list connecting_sockets;
103 struct llcp_sock_list raw_sockets;
106 struct nfc_llcp_sock {
109 struct nfc_llcp_local *local;
113 /* Link parameters */
117 size_t service_name_len;
122 /* Remote link parameters */
132 /* Is the remote peer ready to receive */
135 /* Reserved source SAP */
138 struct sk_buff_head tx_queue;
139 struct sk_buff_head tx_pending_queue;
141 struct list_head accept_queue;
145 struct nfc_llcp_ui_cb {
150 #define nfc_llcp_ui_skb_cb(__skb) ((struct nfc_llcp_ui_cb *)&((__skb)->cb[0]))
152 #define nfc_llcp_sock(sk) ((struct nfc_llcp_sock *) (sk))
153 #define nfc_llcp_dev(sk) (nfc_llcp_sock((sk))->dev)
155 #define LLCP_HEADER_SIZE 2
156 #define LLCP_SEQUENCE_SIZE 1
158 /* LLCP versions: 1.1 is 1.0 plus SDP */
159 #define LLCP_VERSION_10 0x10
160 #define LLCP_VERSION_11 0x11
163 #define LLCP_PDU_SYMM 0x0
164 #define LLCP_PDU_PAX 0x1
165 #define LLCP_PDU_AGF 0x2
166 #define LLCP_PDU_UI 0x3
167 #define LLCP_PDU_CONNECT 0x4
168 #define LLCP_PDU_DISC 0x5
169 #define LLCP_PDU_CC 0x6
170 #define LLCP_PDU_DM 0x7
171 #define LLCP_PDU_FRMR 0x8
172 #define LLCP_PDU_SNL 0x9
173 #define LLCP_PDU_I 0xc
174 #define LLCP_PDU_RR 0xd
175 #define LLCP_PDU_RNR 0xe
177 /* Parameters TLV types */
178 #define LLCP_TLV_VERSION 0x1
179 #define LLCP_TLV_MIUX 0x2
180 #define LLCP_TLV_WKS 0x3
181 #define LLCP_TLV_LTO 0x4
182 #define LLCP_TLV_RW 0x5
183 #define LLCP_TLV_SN 0x6
184 #define LLCP_TLV_OPT 0x7
185 #define LLCP_TLV_SDREQ 0x8
186 #define LLCP_TLV_SDRES 0x9
187 #define LLCP_TLV_MAX 0xa
189 /* Well known LLCP SAP */
190 #define LLCP_SAP_SDP 0x1
191 #define LLCP_SAP_IP 0x2
192 #define LLCP_SAP_OBEX 0x3
193 #define LLCP_SAP_SNEP 0x4
194 #define LLCP_SAP_MAX 0xff
196 /* Disconnection reason code */
197 #define LLCP_DM_DISC 0x00
198 #define LLCP_DM_NOCONN 0x01
199 #define LLCP_DM_NOBOUND 0x02
200 #define LLCP_DM_REJ 0x03
203 void nfc_llcp_sock_link(struct llcp_sock_list *l, struct sock *s);
204 void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *s);
205 struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
206 struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local);
207 int nfc_llcp_local_put(struct nfc_llcp_local *local);
208 u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
209 struct nfc_llcp_sock *sock);
210 u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local);
211 void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap);
212 int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock);
213 void nfc_llcp_send_to_raw_sock(struct nfc_llcp_local *local,
214 struct sk_buff *skb, u8 direction);
217 struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp);
218 void nfc_llcp_sock_free(struct nfc_llcp_sock *sock);
219 void nfc_llcp_accept_unlink(struct sock *sk);
220 void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk);
221 struct sock *nfc_llcp_accept_dequeue(struct sock *sk, struct socket *newsock);
224 int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local,
225 u8 *tlv_array, u16 tlv_array_len);
226 int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock,
227 u8 *tlv_array, u16 tlv_array_len);
230 void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
231 u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length);
232 struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdres_tlv(u8 tid, u8 sap);
233 void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp);
234 void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
235 int nfc_llcp_disconnect(struct nfc_llcp_sock *sock);
236 int nfc_llcp_send_symm(struct nfc_dev *dev);
237 int nfc_llcp_send_connect(struct nfc_llcp_sock *sock);
238 int nfc_llcp_send_cc(struct nfc_llcp_sock *sock);
239 int nfc_llcp_send_snl_sdres(struct nfc_llcp_local *local,
240 struct hlist_head *tlv_list, size_t tlvs_len);
241 int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason);
242 int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock);
243 int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
244 struct msghdr *msg, size_t len);
245 int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
246 struct msghdr *msg, size_t len);
247 int nfc_llcp_send_rr(struct nfc_llcp_sock *sock);
250 int __init nfc_llcp_sock_init(void);
251 void nfc_llcp_sock_exit(void);