diff options
Diffstat (limited to 'net/nfc/llcp/llcp.h')
| -rw-r--r-- | net/nfc/llcp/llcp.h | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/net/nfc/llcp/llcp.h b/net/nfc/llcp/llcp.h new file mode 100644 index 000000000000..0ad2e3361584 --- /dev/null +++ b/net/nfc/llcp/llcp.h @@ -0,0 +1,193 @@ +/* + * 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_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) + +struct nfc_llcp_sock; + +struct nfc_llcp_local { + struct list_head list; + struct nfc_dev *dev; + + struct mutex sdp_lock; + struct mutex socket_lock; + + struct timer_list link_timer; + struct sk_buff_head tx_queue; + struct workqueue_struct *tx_wq; + struct work_struct tx_work; + struct workqueue_struct *rx_wq; + struct work_struct rx_work; + struct sk_buff *rx_pending; + struct workqueue_struct *timeout_wq; + 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 */ + + /* 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; + u8 remote_rw; + + /* sockets array */ + struct nfc_llcp_sock *sockets[LLCP_MAX_SAP]; +}; + +struct nfc_llcp_sock { + struct sock sk; + struct list_head list; + struct nfc_dev *dev; + struct nfc_llcp_local *local; + u32 target_idx; + u32 nfc_protocol; + + u8 ssap; + u8 dsap; + char *service_name; + size_t service_name_len; + + /* 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; + + 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; +}; + +#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 + + +struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev); +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); + +/* 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_tlv(struct nfc_llcp_local *local, + 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_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason); +int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock); + +/* Socket API */ +int __init nfc_llcp_sock_init(void); +void nfc_llcp_sock_exit(void); |