294 lines
6.3 KiB
C
294 lines
6.3 KiB
C
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/*
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Copyright (c) 2010-2012 The Linux Foundation. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2 and
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only version 2 as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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*/
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#ifndef __AMP_H
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#define __AMP_H
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/* AMP defaults */
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#define A2MP_RSP_TIMEOUT (8000) /* 8 seconds */
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/* A2MP Protocol */
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/* A2MP command codes */
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#define A2MP_COMMAND_REJ 0x01
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#define A2MP_DISCOVER_REQ 0x02
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#define A2MP_DISCOVER_RSP 0x03
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#define A2MP_CHANGE_NOTIFY 0x04
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#define A2MP_CHANGE_RSP 0x05
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#define A2MP_GETINFO_REQ 0x06
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#define A2MP_GETINFO_RSP 0x07
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#define A2MP_GETAMPASSOC_REQ 0x08
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#define A2MP_GETAMPASSOC_RSP 0x09
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#define A2MP_CREATEPHYSLINK_REQ 0x0A
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#define A2MP_CREATEPHYSLINK_RSP 0x0B
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#define A2MP_DISCONNPHYSLINK_REQ 0x0C
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#define A2MP_DISCONNPHYSLINK_RSP 0x0D
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struct a2mp_cmd_hdr {
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__u8 code;
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__u8 ident;
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__le16 len;
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} __packed;
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struct a2mp_cmd_rej {
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__le16 reason;
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} __packed;
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struct a2mp_discover_req {
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__le16 mtu;
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__le16 ext_feat;
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} __packed;
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struct a2mp_cl {
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__u8 id;
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__u8 type;
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__u8 status;
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} __packed;
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struct a2mp_discover_rsp {
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__le16 mtu;
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__le16 ext_feat;
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struct a2mp_cl cl[0];
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} __packed;
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struct a2mp_getinfo_req {
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__u8 id;
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} __packed;
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struct a2mp_getinfo_rsp {
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__u8 id;
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__u8 status;
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__le32 total_bw;
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__le32 max_bw;
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__le32 min_latency;
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__le16 pal_cap;
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__le16 assoc_size;
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} __packed;
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struct a2mp_getampassoc_req {
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__u8 id;
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} __packed;
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struct a2mp_getampassoc_rsp {
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__u8 id;
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__u8 status;
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__u8 amp_assoc[0];
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} __packed;
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struct a2mp_createphyslink_req {
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__u8 local_id;
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__u8 remote_id;
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__u8 amp_assoc[0];
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} __packed;
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struct a2mp_createphyslink_rsp {
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__u8 local_id;
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__u8 remote_id;
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__u8 status;
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} __packed;
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struct a2mp_disconnphyslink_req {
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__u8 local_id;
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__u8 remote_id;
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} __packed;
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struct a2mp_disconnphyslink_rsp {
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__u8 local_id;
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__u8 remote_id;
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__u8 status;
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} __packed;
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/* L2CAP-AMP module interface */
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int amp_init(void);
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void amp_exit(void);
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/* L2CAP-AMP fixed channel interface */
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void amp_conn_ind(struct hci_conn *hcon, struct sk_buff *skb);
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/* L2CAP-AMP link interface */
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void amp_create_physical(struct l2cap_conn *conn, struct sock *sk);
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void amp_accept_physical(struct l2cap_conn *conn, u8 id, struct sock *sk);
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/* AMP manager internals */
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struct amp_ctrl {
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struct amp_mgr *mgr;
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__u8 id;
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__u8 type;
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__u8 status;
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__u32 total_bw;
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__u32 max_bw;
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__u32 min_latency;
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__u16 pal_cap;
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__u16 max_assoc_size;
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};
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struct amp_mgr {
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struct list_head list;
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__u8 discovered;
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__u8 next_ident;
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struct l2cap_conn *l2cap_conn;
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struct socket *a2mp_sock;
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struct list_head ctx_list;
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rwlock_t ctx_list_lock;
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struct amp_ctrl *ctrls; /* @@ TODO s.b. list of controllers */
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struct sk_buff *skb;
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__u8 connected;
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};
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/* AMP Manager signalling contexts */
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#define AMP_GETAMPASSOC 1
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#define AMP_CREATEPHYSLINK 2
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#define AMP_ACCEPTPHYSLINK 3
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#define AMP_CREATELOGLINK 4
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#define AMP_ACCEPTLOGLINK 5
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/* Get AMP Assoc sequence */
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#define AMP_GAA_INIT 0
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#define AMP_GAA_RLAA_COMPLETE 1
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struct amp_gaa_state {
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__u8 req_ident;
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__u16 len_so_far;
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__u8 *assoc;
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};
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/* Create Physical Link sequence */
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#define AMP_CPL_INIT 0
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#define AMP_CPL_DISC_RSP 1
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#define AMP_CPL_GETINFO_RSP 2
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#define AMP_CPL_GAA_RSP 3
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#define AMP_CPL_CPL_STATUS 4
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#define AMP_CPL_WRA_COMPLETE 5
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#define AMP_CPL_CHANNEL_SELECT 6
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#define AMP_CPL_RLA_COMPLETE 7
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#define AMP_CPL_PL_COMPLETE 8
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#define AMP_CPL_PL_CANCEL 9
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struct amp_cpl_state {
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__u8 remote_id;
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__u16 max_len;
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__u8 *remote_assoc;
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__u8 *local_assoc;
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__u16 len_so_far;
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__u16 rem_len;
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__u8 phy_handle;
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};
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/* Accept Physical Link sequence */
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#define AMP_APL_INIT 0
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#define AMP_APL_APL_STATUS 1
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#define AMP_APL_WRA_COMPLETE 2
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#define AMP_APL_PL_COMPLETE 3
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struct amp_apl_state {
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__u8 remote_id;
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__u8 req_ident;
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__u8 *remote_assoc;
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__u16 len_so_far;
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__u16 rem_len;
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__u8 phy_handle;
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};
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/* Create/Accept Logical Link sequence */
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#define AMP_LOG_INIT 0
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#define AMP_LOG_LL_STATUS 1
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#define AMP_LOG_LL_COMPLETE 2
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struct amp_log_state {
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__u8 remote_id;
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};
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/* Possible event types a context may wait for */
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#define AMP_INIT 0x01
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#define AMP_HCI_EVENT 0x02
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#define AMP_HCI_CMD_CMPLT 0x04
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#define AMP_HCI_CMD_STATUS 0x08
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#define AMP_A2MP_RSP 0x10
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#define AMP_KILLED 0x20
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#define AMP_CANCEL 0x40
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struct amp_ctx {
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struct list_head list;
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struct amp_mgr *mgr;
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struct hci_dev *hdev;
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__u8 type;
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__u8 state;
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union {
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struct amp_gaa_state gaa;
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struct amp_cpl_state cpl;
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struct amp_apl_state apl;
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} d;
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__u8 evt_type;
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__u8 evt_code;
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__u16 opcode;
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__u8 id;
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__u8 rsp_ident;
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struct sock *sk;
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struct amp_ctx *deferred;
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struct timer_list timer;
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};
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/* AMP work */
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struct amp_work_pl_timeout {
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struct work_struct work;
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struct amp_ctrl *ctrl;
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};
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struct amp_work_ctx_timeout {
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struct work_struct work;
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struct amp_ctx *ctx;
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};
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struct amp_work_data_ready {
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struct work_struct work;
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struct sock *sk;
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int bytes;
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};
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struct amp_work_state_change {
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struct work_struct work;
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struct sock *sk;
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};
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struct amp_work_conn_ind {
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struct work_struct work;
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struct hci_conn *hcon;
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struct sk_buff *skb;
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};
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struct amp_work_create_physical {
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struct work_struct work;
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struct l2cap_conn *conn;
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u8 id;
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struct sock *sk;
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};
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struct amp_work_accept_physical {
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struct work_struct work;
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struct l2cap_conn *conn;
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u8 id;
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struct sock *sk;
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};
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struct amp_work_cmd_cmplt {
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struct work_struct work;
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struct hci_dev *hdev;
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u16 opcode;
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struct sk_buff *skb;
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};
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struct amp_work_cmd_status {
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struct work_struct work;
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struct hci_dev *hdev;
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u16 opcode;
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u8 status;
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};
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struct amp_work_event {
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struct work_struct work;
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struct hci_dev *hdev;
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u8 event;
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struct sk_buff *skb;
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};
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#endif /* __AMP_H */
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