| /* |
| * Copyright (C) 2011 Intel Corporation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the |
| * Free Software Foundation, Inc., |
| * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| enum llcp_state { |
| LLCP_CONNECTED = 1, /* wait_for_packet() wants that */ |
| LLCP_CLOSED, |
| LLCP_BOUND, |
| LLCP_LISTEN, |
| }; |
| |
| #define LLCP_DEFAULT_LTO 100 |
| #define LLCP_DEFAULT_RW 1 |
| #define LLCP_DEFAULT_MIU 128 |
| |
| #define LLCP_MAX_LTO 0xff |
| #define LLCP_MAX_RW 15 |
| #define LLCP_MAX_MIUX 0x7ff |
| |
| #define LLCP_WKS_NUM_SAP 16 |
| #define LLCP_SDP_NUM_SAP 16 |
| #define LLCP_LOCAL_NUM_SAP 32 |
| #define LLCP_LOCAL_SAP_OFFSET (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP) |
| #define LLCP_MAX_SAP (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP + LLCP_LOCAL_NUM_SAP) |
| #define LLCP_SDP_UNBOUND (LLCP_MAX_SAP + 1) |
| |
| struct nfc_llcp_sock; |
| |
| struct llcp_sock_list { |
| struct hlist_head head; |
| rwlock_t lock; |
| }; |
| |
| struct nfc_llcp_local { |
| struct list_head list; |
| struct nfc_dev *dev; |
| |
| struct kref ref; |
| |
| struct mutex sdp_lock; |
| |
| struct timer_list link_timer; |
| struct sk_buff_head tx_queue; |
| struct work_struct tx_work; |
| struct work_struct rx_work; |
| struct sk_buff *rx_pending; |
| struct work_struct timeout_work; |
| |
| u32 target_idx; |
| u8 rf_mode; |
| u8 comm_mode; |
| unsigned long local_wks; /* Well known services */ |
| unsigned long local_sdp; /* Local services */ |
| unsigned long local_sap; /* Local SAPs, not available for discovery */ |
| atomic_t local_sdp_cnt[LLCP_SDP_NUM_SAP]; |
| |
| /* local */ |
| u8 gb[NFC_MAX_GT_LEN]; |
| u8 gb_len; |
| |
| /* remote */ |
| u8 remote_gb[NFC_MAX_GT_LEN]; |
| u8 remote_gb_len; |
| |
| u8 remote_version; |
| u16 remote_miu; |
| u16 remote_lto; |
| u8 remote_opt; |
| u16 remote_wks; |
| |
| /* sockets array */ |
| struct llcp_sock_list sockets; |
| struct llcp_sock_list connecting_sockets; |
| struct llcp_sock_list raw_sockets; |
| }; |
| |
| struct nfc_llcp_sock { |
| struct sock sk; |
| struct nfc_dev *dev; |
| struct nfc_llcp_local *local; |
| u32 target_idx; |
| u32 nfc_protocol; |
| |
| /* Link parameters */ |
| u8 ssap; |
| u8 dsap; |
| char *service_name; |
| size_t service_name_len; |
| u8 rw; |
| u16 miu; |
| |
| /* Link variables */ |
| u8 send_n; |
| u8 send_ack_n; |
| u8 recv_n; |
| u8 recv_ack_n; |
| |
| /* Is the remote peer ready to receive */ |
| u8 remote_ready; |
| |
| /* Reserved source SAP */ |
| u8 reserved_ssap; |
| |
| struct sk_buff_head tx_queue; |
| struct sk_buff_head tx_pending_queue; |
| struct sk_buff_head tx_backlog_queue; |
| |
| struct list_head accept_queue; |
| struct sock *parent; |
| }; |
| |
| struct nfc_llcp_ui_cb { |
| __u8 dsap; |
| __u8 ssap; |
| }; |
| |
| #define nfc_llcp_ui_skb_cb(__skb) ((struct nfc_llcp_ui_cb *)&((__skb)->cb[0])) |
| |
| #define nfc_llcp_sock(sk) ((struct nfc_llcp_sock *) (sk)) |
| #define nfc_llcp_dev(sk) (nfc_llcp_sock((sk))->dev) |
| |
| #define LLCP_HEADER_SIZE 2 |
| #define LLCP_SEQUENCE_SIZE 1 |
| |
| /* LLCP versions: 1.1 is 1.0 plus SDP */ |
| #define LLCP_VERSION_10 0x10 |
| #define LLCP_VERSION_11 0x11 |
| |
| /* LLCP PDU types */ |
| #define LLCP_PDU_SYMM 0x0 |
| #define LLCP_PDU_PAX 0x1 |
| #define LLCP_PDU_AGF 0x2 |
| #define LLCP_PDU_UI 0x3 |
| #define LLCP_PDU_CONNECT 0x4 |
| #define LLCP_PDU_DISC 0x5 |
| #define LLCP_PDU_CC 0x6 |
| #define LLCP_PDU_DM 0x7 |
| #define LLCP_PDU_FRMR 0x8 |
| #define LLCP_PDU_SNL 0x9 |
| #define LLCP_PDU_I 0xc |
| #define LLCP_PDU_RR 0xd |
| #define LLCP_PDU_RNR 0xe |
| |
| /* Parameters TLV types */ |
| #define LLCP_TLV_VERSION 0x1 |
| #define LLCP_TLV_MIUX 0x2 |
| #define LLCP_TLV_WKS 0x3 |
| #define LLCP_TLV_LTO 0x4 |
| #define LLCP_TLV_RW 0x5 |
| #define LLCP_TLV_SN 0x6 |
| #define LLCP_TLV_OPT 0x7 |
| #define LLCP_TLV_SDREQ 0x8 |
| #define LLCP_TLV_SDRES 0x9 |
| #define LLCP_TLV_MAX 0xa |
| |
| /* Well known LLCP SAP */ |
| #define LLCP_SAP_SDP 0x1 |
| #define LLCP_SAP_IP 0x2 |
| #define LLCP_SAP_OBEX 0x3 |
| #define LLCP_SAP_SNEP 0x4 |
| #define LLCP_SAP_MAX 0xff |
| |
| /* Disconnection reason code */ |
| #define LLCP_DM_DISC 0x00 |
| #define LLCP_DM_NOCONN 0x01 |
| #define LLCP_DM_NOBOUND 0x02 |
| #define LLCP_DM_REJ 0x03 |
| |
| |
| void nfc_llcp_sock_link(struct llcp_sock_list *l, struct sock *s); |
| void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *s); |
| struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev); |
| struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local); |
| int nfc_llcp_local_put(struct nfc_llcp_local *local); |
| u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local, |
| struct nfc_llcp_sock *sock); |
| u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local); |
| void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap); |
| int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock); |
| void nfc_llcp_send_to_raw_sock(struct nfc_llcp_local *local, |
| struct sk_buff *skb, u8 direction); |
| |
| /* Sock API */ |
| struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp); |
| void nfc_llcp_sock_free(struct nfc_llcp_sock *sock); |
| void nfc_llcp_accept_unlink(struct sock *sk); |
| void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk); |
| struct sock *nfc_llcp_accept_dequeue(struct sock *sk, struct socket *newsock); |
| |
| /* TLV API */ |
| int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local, |
| u8 *tlv_array, u16 tlv_array_len); |
| int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock, |
| u8 *tlv_array, u16 tlv_array_len); |
| |
| /* Commands API */ |
| void nfc_llcp_recv(void *data, struct sk_buff *skb, int err); |
| u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length); |
| void nfc_llcp_recv(void *data, struct sk_buff *skb, int err); |
| int nfc_llcp_disconnect(struct nfc_llcp_sock *sock); |
| int nfc_llcp_send_symm(struct nfc_dev *dev); |
| int nfc_llcp_send_connect(struct nfc_llcp_sock *sock); |
| int nfc_llcp_send_cc(struct nfc_llcp_sock *sock); |
| int nfc_llcp_send_snl(struct nfc_llcp_local *local, u8 tid, u8 sap); |
| int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason); |
| int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock); |
| int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock, |
| struct msghdr *msg, size_t len); |
| int nfc_llcp_send_rr(struct nfc_llcp_sock *sock); |
| |
| /* Socket API */ |
| int __init nfc_llcp_sock_init(void); |
| void nfc_llcp_sock_exit(void); |