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)
43 struct nfc_llcp_local {
44 struct list_head list;
47 struct mutex sdp_lock;
48 struct mutex socket_lock;
50 struct timer_list link_timer;
51 struct sk_buff_head tx_queue;
52 struct workqueue_struct *tx_wq;
53 struct work_struct tx_work;
54 struct workqueue_struct *rx_wq;
55 struct work_struct rx_work;
56 struct sk_buff *rx_pending;
57 struct workqueue_struct *timeout_wq;
58 struct work_struct timeout_work;
63 unsigned long local_wks; /* Well known services */
64 unsigned long local_sdp; /* Local services */
65 unsigned long local_sap; /* Local SAPs, not available for discovery */
68 u8 gb[NFC_MAX_GT_LEN];
72 u8 remote_gb[NFC_MAX_GT_LEN];
83 struct nfc_llcp_sock *sockets[LLCP_MAX_SAP];
86 struct nfc_llcp_sock {
88 struct list_head list;
90 struct nfc_llcp_local *local;
97 size_t service_name_len;
105 /* Is the remote peer ready to receive */
108 struct sk_buff_head tx_queue;
109 struct sk_buff_head tx_pending_queue;
110 struct sk_buff_head tx_backlog_queue;
112 struct list_head accept_queue;
116 #define nfc_llcp_sock(sk) ((struct nfc_llcp_sock *) (sk))
117 #define nfc_llcp_dev(sk) (nfc_llcp_sock((sk))->dev)
119 #define LLCP_HEADER_SIZE 2
120 #define LLCP_SEQUENCE_SIZE 1
122 /* LLCP versions: 1.1 is 1.0 plus SDP */
123 #define LLCP_VERSION_10 0x10
124 #define LLCP_VERSION_11 0x11
127 #define LLCP_PDU_SYMM 0x0
128 #define LLCP_PDU_PAX 0x1
129 #define LLCP_PDU_AGF 0x2
130 #define LLCP_PDU_UI 0x3
131 #define LLCP_PDU_CONNECT 0x4
132 #define LLCP_PDU_DISC 0x5
133 #define LLCP_PDU_CC 0x6
134 #define LLCP_PDU_DM 0x7
135 #define LLCP_PDU_FRMR 0x8
136 #define LLCP_PDU_SNL 0x9
137 #define LLCP_PDU_I 0xc
138 #define LLCP_PDU_RR 0xd
139 #define LLCP_PDU_RNR 0xe
141 /* Parameters TLV types */
142 #define LLCP_TLV_VERSION 0x1
143 #define LLCP_TLV_MIUX 0x2
144 #define LLCP_TLV_WKS 0x3
145 #define LLCP_TLV_LTO 0x4
146 #define LLCP_TLV_RW 0x5
147 #define LLCP_TLV_SN 0x6
148 #define LLCP_TLV_OPT 0x7
149 #define LLCP_TLV_SDREQ 0x8
150 #define LLCP_TLV_SDRES 0x9
151 #define LLCP_TLV_MAX 0xa
153 /* Well known LLCP SAP */
154 #define LLCP_SAP_SDP 0x1
155 #define LLCP_SAP_IP 0x2
156 #define LLCP_SAP_OBEX 0x3
157 #define LLCP_SAP_SNEP 0x4
158 #define LLCP_SAP_MAX 0xff
160 /* Disconnection reason code */
161 #define LLCP_DM_DISC 0x00
162 #define LLCP_DM_NOCONN 0x01
163 #define LLCP_DM_NOBOUND 0x02
164 #define LLCP_DM_REJ 0x03
167 struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
168 u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
169 struct nfc_llcp_sock *sock);
170 u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local);
171 void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap);
172 int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock);
175 struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp);
176 void nfc_llcp_sock_free(struct nfc_llcp_sock *sock);
177 void nfc_llcp_accept_unlink(struct sock *sk);
178 void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk);
179 struct sock *nfc_llcp_accept_dequeue(struct sock *sk, struct socket *newsock);
182 int nfc_llcp_parse_tlv(struct nfc_llcp_local *local,
183 u8 *tlv_array, u16 tlv_array_len);
186 void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
187 u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length);
188 void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
189 int nfc_llcp_disconnect(struct nfc_llcp_sock *sock);
190 int nfc_llcp_send_symm(struct nfc_dev *dev);
191 int nfc_llcp_send_connect(struct nfc_llcp_sock *sock);
192 int nfc_llcp_send_cc(struct nfc_llcp_sock *sock);
193 int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason);
194 int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock);
195 int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
196 struct msghdr *msg, size_t len);
197 int nfc_llcp_send_rr(struct nfc_llcp_sock *sock);
200 int __init nfc_llcp_sock_init(void);
201 void nfc_llcp_sock_exit(void);