| /* |
| BlueZ - Bluetooth protocol stack for Linux |
| Copyright (C) 2000-2001 Qualcomm Incorporated |
| Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org> |
| Copyright (C) 2010 Google Inc. |
| |
| Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License version 2 as |
| published by the Free Software Foundation; |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
| CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| |
| ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
| SOFTWARE IS DISCLAIMED. |
| */ |
| |
| #ifndef __L2CAP_H |
| #define __L2CAP_H |
| |
| #include <asm/unaligned.h> |
| |
| /* L2CAP defaults */ |
| #define L2CAP_DEFAULT_MTU 672 |
| #define L2CAP_DEFAULT_MIN_MTU 48 |
| #define L2CAP_DEFAULT_FLUSH_TO 0xFFFF |
| #define L2CAP_EFS_DEFAULT_FLUSH_TO 0xFFFFFFFF |
| #define L2CAP_DEFAULT_TX_WINDOW 63 |
| #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF |
| #define L2CAP_DEFAULT_MAX_TX 3 |
| #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */ |
| #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ |
| #define L2CAP_DEFAULT_MAX_PDU_SIZE 1492 /* Sized for AMP packet */ |
| #define L2CAP_DEFAULT_ACK_TO 200 |
| #define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF |
| #define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF |
| #define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF |
| #define L2CAP_BREDR_MAX_PAYLOAD 1019 /* 3-DH5 packet */ |
| #define L2CAP_LE_MIN_MTU 23 |
| |
| #define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100) |
| #define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000) |
| #define L2CAP_ENC_TIMEOUT msecs_to_jiffies(5000) |
| #define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000) |
| #define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000) |
| #define L2CAP_MOVE_TIMEOUT msecs_to_jiffies(4000) |
| #define L2CAP_MOVE_ERTX_TIMEOUT msecs_to_jiffies(60000) |
| |
| #define L2CAP_A2MP_DEFAULT_MTU 670 |
| |
| /* L2CAP socket address */ |
| struct sockaddr_l2 { |
| sa_family_t l2_family; |
| __le16 l2_psm; |
| bdaddr_t l2_bdaddr; |
| __le16 l2_cid; |
| __u8 l2_bdaddr_type; |
| }; |
| |
| /* L2CAP socket options */ |
| #define L2CAP_OPTIONS 0x01 |
| struct l2cap_options { |
| __u16 omtu; |
| __u16 imtu; |
| __u16 flush_to; |
| __u8 mode; |
| __u8 fcs; |
| __u8 max_tx; |
| __u16 txwin_size; |
| }; |
| |
| #define L2CAP_CONNINFO 0x02 |
| struct l2cap_conninfo { |
| __u16 hci_handle; |
| __u8 dev_class[3]; |
| }; |
| |
| #define L2CAP_LM 0x03 |
| #define L2CAP_LM_MASTER 0x0001 |
| #define L2CAP_LM_AUTH 0x0002 |
| #define L2CAP_LM_ENCRYPT 0x0004 |
| #define L2CAP_LM_TRUSTED 0x0008 |
| #define L2CAP_LM_RELIABLE 0x0010 |
| #define L2CAP_LM_SECURE 0x0020 |
| |
| /* L2CAP command codes */ |
| #define L2CAP_COMMAND_REJ 0x01 |
| #define L2CAP_CONN_REQ 0x02 |
| #define L2CAP_CONN_RSP 0x03 |
| #define L2CAP_CONF_REQ 0x04 |
| #define L2CAP_CONF_RSP 0x05 |
| #define L2CAP_DISCONN_REQ 0x06 |
| #define L2CAP_DISCONN_RSP 0x07 |
| #define L2CAP_ECHO_REQ 0x08 |
| #define L2CAP_ECHO_RSP 0x09 |
| #define L2CAP_INFO_REQ 0x0a |
| #define L2CAP_INFO_RSP 0x0b |
| #define L2CAP_CREATE_CHAN_REQ 0x0c |
| #define L2CAP_CREATE_CHAN_RSP 0x0d |
| #define L2CAP_MOVE_CHAN_REQ 0x0e |
| #define L2CAP_MOVE_CHAN_RSP 0x0f |
| #define L2CAP_MOVE_CHAN_CFM 0x10 |
| #define L2CAP_MOVE_CHAN_CFM_RSP 0x11 |
| #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 |
| #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 |
| |
| /* L2CAP extended feature mask */ |
| #define L2CAP_FEAT_FLOWCTL 0x00000001 |
| #define L2CAP_FEAT_RETRANS 0x00000002 |
| #define L2CAP_FEAT_BIDIR_QOS 0x00000004 |
| #define L2CAP_FEAT_ERTM 0x00000008 |
| #define L2CAP_FEAT_STREAMING 0x00000010 |
| #define L2CAP_FEAT_FCS 0x00000020 |
| #define L2CAP_FEAT_EXT_FLOW 0x00000040 |
| #define L2CAP_FEAT_FIXED_CHAN 0x00000080 |
| #define L2CAP_FEAT_EXT_WINDOW 0x00000100 |
| #define L2CAP_FEAT_UCD 0x00000200 |
| |
| /* L2CAP checksum option */ |
| #define L2CAP_FCS_NONE 0x00 |
| #define L2CAP_FCS_CRC16 0x01 |
| |
| /* L2CAP fixed channels */ |
| #define L2CAP_FC_L2CAP 0x02 |
| #define L2CAP_FC_CONNLESS 0x04 |
| #define L2CAP_FC_A2MP 0x08 |
| |
| /* L2CAP Control Field bit masks */ |
| #define L2CAP_CTRL_SAR 0xC000 |
| #define L2CAP_CTRL_REQSEQ 0x3F00 |
| #define L2CAP_CTRL_TXSEQ 0x007E |
| #define L2CAP_CTRL_SUPERVISE 0x000C |
| |
| #define L2CAP_CTRL_RETRANS 0x0080 |
| #define L2CAP_CTRL_FINAL 0x0080 |
| #define L2CAP_CTRL_POLL 0x0010 |
| #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ |
| |
| #define L2CAP_CTRL_TXSEQ_SHIFT 1 |
| #define L2CAP_CTRL_SUPER_SHIFT 2 |
| #define L2CAP_CTRL_POLL_SHIFT 4 |
| #define L2CAP_CTRL_FINAL_SHIFT 7 |
| #define L2CAP_CTRL_REQSEQ_SHIFT 8 |
| #define L2CAP_CTRL_SAR_SHIFT 14 |
| |
| /* L2CAP Extended Control Field bit mask */ |
| #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000 |
| #define L2CAP_EXT_CTRL_SAR 0x00030000 |
| #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000 |
| #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC |
| |
| #define L2CAP_EXT_CTRL_POLL 0x00040000 |
| #define L2CAP_EXT_CTRL_FINAL 0x00000002 |
| #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */ |
| |
| #define L2CAP_EXT_CTRL_FINAL_SHIFT 1 |
| #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2 |
| #define L2CAP_EXT_CTRL_SAR_SHIFT 16 |
| #define L2CAP_EXT_CTRL_SUPER_SHIFT 16 |
| #define L2CAP_EXT_CTRL_POLL_SHIFT 18 |
| #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18 |
| |
| /* L2CAP Supervisory Function */ |
| #define L2CAP_SUPER_RR 0x00 |
| #define L2CAP_SUPER_REJ 0x01 |
| #define L2CAP_SUPER_RNR 0x02 |
| #define L2CAP_SUPER_SREJ 0x03 |
| |
| /* L2CAP Segmentation and Reassembly */ |
| #define L2CAP_SAR_UNSEGMENTED 0x00 |
| #define L2CAP_SAR_START 0x01 |
| #define L2CAP_SAR_END 0x02 |
| #define L2CAP_SAR_CONTINUE 0x03 |
| |
| /* L2CAP Command rej. reasons */ |
| #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 |
| #define L2CAP_REJ_MTU_EXCEEDED 0x0001 |
| #define L2CAP_REJ_INVALID_CID 0x0002 |
| |
| /* L2CAP structures */ |
| struct l2cap_hdr { |
| __le16 len; |
| __le16 cid; |
| } __packed; |
| #define L2CAP_HDR_SIZE 4 |
| #define L2CAP_ENH_HDR_SIZE 6 |
| #define L2CAP_EXT_HDR_SIZE 8 |
| |
| #define L2CAP_FCS_SIZE 2 |
| #define L2CAP_SDULEN_SIZE 2 |
| #define L2CAP_PSMLEN_SIZE 2 |
| #define L2CAP_ENH_CTRL_SIZE 2 |
| #define L2CAP_EXT_CTRL_SIZE 4 |
| |
| struct l2cap_cmd_hdr { |
| __u8 code; |
| __u8 ident; |
| __le16 len; |
| } __packed; |
| #define L2CAP_CMD_HDR_SIZE 4 |
| |
| struct l2cap_cmd_rej_unk { |
| __le16 reason; |
| } __packed; |
| |
| struct l2cap_cmd_rej_mtu { |
| __le16 reason; |
| __le16 max_mtu; |
| } __packed; |
| |
| struct l2cap_cmd_rej_cid { |
| __le16 reason; |
| __le16 scid; |
| __le16 dcid; |
| } __packed; |
| |
| struct l2cap_conn_req { |
| __le16 psm; |
| __le16 scid; |
| } __packed; |
| |
| struct l2cap_conn_rsp { |
| __le16 dcid; |
| __le16 scid; |
| __le16 result; |
| __le16 status; |
| } __packed; |
| |
| /* protocol/service multiplexer (PSM) */ |
| #define L2CAP_PSM_SDP 0x0001 |
| #define L2CAP_PSM_RFCOMM 0x0003 |
| #define L2CAP_PSM_3DSP 0x0021 |
| |
| /* channel indentifier */ |
| #define L2CAP_CID_SIGNALING 0x0001 |
| #define L2CAP_CID_CONN_LESS 0x0002 |
| #define L2CAP_CID_A2MP 0x0003 |
| #define L2CAP_CID_ATT 0x0004 |
| #define L2CAP_CID_LE_SIGNALING 0x0005 |
| #define L2CAP_CID_SMP 0x0006 |
| #define L2CAP_CID_DYN_START 0x0040 |
| #define L2CAP_CID_DYN_END 0xffff |
| |
| /* connect/create channel results */ |
| #define L2CAP_CR_SUCCESS 0x0000 |
| #define L2CAP_CR_PEND 0x0001 |
| #define L2CAP_CR_BAD_PSM 0x0002 |
| #define L2CAP_CR_SEC_BLOCK 0x0003 |
| #define L2CAP_CR_NO_MEM 0x0004 |
| #define L2CAP_CR_BAD_AMP 0x0005 |
| |
| /* connect/create channel status */ |
| #define L2CAP_CS_NO_INFO 0x0000 |
| #define L2CAP_CS_AUTHEN_PEND 0x0001 |
| #define L2CAP_CS_AUTHOR_PEND 0x0002 |
| |
| struct l2cap_conf_req { |
| __le16 dcid; |
| __le16 flags; |
| __u8 data[0]; |
| } __packed; |
| |
| struct l2cap_conf_rsp { |
| __le16 scid; |
| __le16 flags; |
| __le16 result; |
| __u8 data[0]; |
| } __packed; |
| |
| #define L2CAP_CONF_SUCCESS 0x0000 |
| #define L2CAP_CONF_UNACCEPT 0x0001 |
| #define L2CAP_CONF_REJECT 0x0002 |
| #define L2CAP_CONF_UNKNOWN 0x0003 |
| #define L2CAP_CONF_PENDING 0x0004 |
| #define L2CAP_CONF_EFS_REJECT 0x0005 |
| |
| /* configuration req/rsp continuation flag */ |
| #define L2CAP_CONF_FLAG_CONTINUATION 0x0001 |
| |
| struct l2cap_conf_opt { |
| __u8 type; |
| __u8 len; |
| __u8 val[0]; |
| } __packed; |
| #define L2CAP_CONF_OPT_SIZE 2 |
| |
| #define L2CAP_CONF_HINT 0x80 |
| #define L2CAP_CONF_MASK 0x7f |
| |
| #define L2CAP_CONF_MTU 0x01 |
| #define L2CAP_CONF_FLUSH_TO 0x02 |
| #define L2CAP_CONF_QOS 0x03 |
| #define L2CAP_CONF_RFC 0x04 |
| #define L2CAP_CONF_FCS 0x05 |
| #define L2CAP_CONF_EFS 0x06 |
| #define L2CAP_CONF_EWS 0x07 |
| |
| #define L2CAP_CONF_MAX_SIZE 22 |
| |
| struct l2cap_conf_rfc { |
| __u8 mode; |
| __u8 txwin_size; |
| __u8 max_transmit; |
| __le16 retrans_timeout; |
| __le16 monitor_timeout; |
| __le16 max_pdu_size; |
| } __packed; |
| |
| #define L2CAP_MODE_BASIC 0x00 |
| #define L2CAP_MODE_RETRANS 0x01 |
| #define L2CAP_MODE_FLOWCTL 0x02 |
| #define L2CAP_MODE_ERTM 0x03 |
| #define L2CAP_MODE_STREAMING 0x04 |
| |
| struct l2cap_conf_efs { |
| __u8 id; |
| __u8 stype; |
| __le16 msdu; |
| __le32 sdu_itime; |
| __le32 acc_lat; |
| __le32 flush_to; |
| } __packed; |
| |
| #define L2CAP_SERV_NOTRAFIC 0x00 |
| #define L2CAP_SERV_BESTEFFORT 0x01 |
| #define L2CAP_SERV_GUARANTEED 0x02 |
| |
| #define L2CAP_BESTEFFORT_ID 0x01 |
| |
| struct l2cap_disconn_req { |
| __le16 dcid; |
| __le16 scid; |
| } __packed; |
| |
| struct l2cap_disconn_rsp { |
| __le16 dcid; |
| __le16 scid; |
| } __packed; |
| |
| struct l2cap_info_req { |
| __le16 type; |
| } __packed; |
| |
| struct l2cap_info_rsp { |
| __le16 type; |
| __le16 result; |
| __u8 data[0]; |
| } __packed; |
| |
| struct l2cap_create_chan_req { |
| __le16 psm; |
| __le16 scid; |
| __u8 amp_id; |
| } __packed; |
| |
| struct l2cap_create_chan_rsp { |
| __le16 dcid; |
| __le16 scid; |
| __le16 result; |
| __le16 status; |
| } __packed; |
| |
| struct l2cap_move_chan_req { |
| __le16 icid; |
| __u8 dest_amp_id; |
| } __packed; |
| |
| struct l2cap_move_chan_rsp { |
| __le16 icid; |
| __le16 result; |
| } __packed; |
| |
| #define L2CAP_MR_SUCCESS 0x0000 |
| #define L2CAP_MR_PEND 0x0001 |
| #define L2CAP_MR_BAD_ID 0x0002 |
| #define L2CAP_MR_SAME_ID 0x0003 |
| #define L2CAP_MR_NOT_SUPP 0x0004 |
| #define L2CAP_MR_COLLISION 0x0005 |
| #define L2CAP_MR_NOT_ALLOWED 0x0006 |
| |
| struct l2cap_move_chan_cfm { |
| __le16 icid; |
| __le16 result; |
| } __packed; |
| |
| #define L2CAP_MC_CONFIRMED 0x0000 |
| #define L2CAP_MC_UNCONFIRMED 0x0001 |
| |
| struct l2cap_move_chan_cfm_rsp { |
| __le16 icid; |
| } __packed; |
| |
| /* info type */ |
| #define L2CAP_IT_CL_MTU 0x0001 |
| #define L2CAP_IT_FEAT_MASK 0x0002 |
| #define L2CAP_IT_FIXED_CHAN 0x0003 |
| |
| /* info result */ |
| #define L2CAP_IR_SUCCESS 0x0000 |
| #define L2CAP_IR_NOTSUPP 0x0001 |
| |
| struct l2cap_conn_param_update_req { |
| __le16 min; |
| __le16 max; |
| __le16 latency; |
| __le16 to_multiplier; |
| } __packed; |
| |
| struct l2cap_conn_param_update_rsp { |
| __le16 result; |
| } __packed; |
| |
| /* Connection Parameters result */ |
| #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 |
| #define L2CAP_CONN_PARAM_REJECTED 0x0001 |
| |
| /* ----- L2CAP channels and connections ----- */ |
| struct l2cap_seq_list { |
| __u16 head; |
| __u16 tail; |
| __u16 mask; |
| __u16 *list; |
| }; |
| |
| #define L2CAP_SEQ_LIST_CLEAR 0xFFFF |
| #define L2CAP_SEQ_LIST_TAIL 0x8000 |
| |
| struct l2cap_chan { |
| struct sock *sk; |
| |
| struct l2cap_conn *conn; |
| struct hci_conn *hs_hcon; |
| struct hci_chan *hs_hchan; |
| struct kref kref; |
| |
| __u8 state; |
| |
| bdaddr_t dst; |
| __u8 dst_type; |
| bdaddr_t src; |
| __u8 src_type; |
| __le16 psm; |
| __le16 sport; |
| __u16 dcid; |
| __u16 scid; |
| |
| __u16 imtu; |
| __u16 omtu; |
| __u16 flush_to; |
| __u8 mode; |
| __u8 chan_type; |
| __u8 chan_policy; |
| |
| __u8 sec_level; |
| |
| __u8 ident; |
| |
| __u8 conf_req[64]; |
| __u8 conf_len; |
| __u8 num_conf_req; |
| __u8 num_conf_rsp; |
| |
| __u8 fcs; |
| |
| __u16 tx_win; |
| __u16 tx_win_max; |
| __u16 ack_win; |
| __u8 max_tx; |
| __u16 retrans_timeout; |
| __u16 monitor_timeout; |
| __u16 mps; |
| |
| __u8 tx_state; |
| __u8 rx_state; |
| |
| unsigned long conf_state; |
| unsigned long conn_state; |
| unsigned long flags; |
| |
| __u8 remote_amp_id; |
| __u8 local_amp_id; |
| __u8 move_id; |
| __u8 move_state; |
| __u8 move_role; |
| |
| __u16 next_tx_seq; |
| __u16 expected_ack_seq; |
| __u16 expected_tx_seq; |
| __u16 buffer_seq; |
| __u16 srej_save_reqseq; |
| __u16 last_acked_seq; |
| __u16 frames_sent; |
| __u16 unacked_frames; |
| __u8 retry_count; |
| __u16 sdu_len; |
| struct sk_buff *sdu; |
| struct sk_buff *sdu_last_frag; |
| |
| __u16 remote_tx_win; |
| __u8 remote_max_tx; |
| __u16 remote_mps; |
| |
| __u8 local_id; |
| __u8 local_stype; |
| __u16 local_msdu; |
| __u32 local_sdu_itime; |
| __u32 local_acc_lat; |
| __u32 local_flush_to; |
| |
| __u8 remote_id; |
| __u8 remote_stype; |
| __u16 remote_msdu; |
| __u32 remote_sdu_itime; |
| __u32 remote_acc_lat; |
| __u32 remote_flush_to; |
| |
| struct delayed_work chan_timer; |
| struct delayed_work retrans_timer; |
| struct delayed_work monitor_timer; |
| struct delayed_work ack_timer; |
| |
| struct sk_buff *tx_send_head; |
| struct sk_buff_head tx_q; |
| struct sk_buff_head srej_q; |
| struct l2cap_seq_list srej_list; |
| struct l2cap_seq_list retrans_list; |
| |
| struct list_head list; |
| struct list_head global_l; |
| |
| void *data; |
| struct l2cap_ops *ops; |
| struct mutex lock; |
| }; |
| |
| struct l2cap_ops { |
| char *name; |
| |
| struct l2cap_chan *(*new_connection) (struct l2cap_chan *chan); |
| int (*recv) (struct l2cap_chan * chan, |
| struct sk_buff *skb); |
| void (*teardown) (struct l2cap_chan *chan, int err); |
| void (*close) (struct l2cap_chan *chan); |
| void (*state_change) (struct l2cap_chan *chan, |
| int state, int err); |
| void (*ready) (struct l2cap_chan *chan); |
| void (*defer) (struct l2cap_chan *chan); |
| void (*resume) (struct l2cap_chan *chan); |
| void (*set_shutdown) (struct l2cap_chan *chan); |
| long (*get_sndtimeo) (struct l2cap_chan *chan); |
| struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan, |
| unsigned long len, int nb); |
| }; |
| |
| struct l2cap_conn { |
| struct hci_conn *hcon; |
| struct hci_chan *hchan; |
| |
| unsigned int mtu; |
| |
| __u32 feat_mask; |
| __u8 fixed_chan_mask; |
| bool hs_enabled; |
| |
| __u8 info_state; |
| __u8 info_ident; |
| |
| struct delayed_work info_timer; |
| |
| spinlock_t lock; |
| |
| struct sk_buff *rx_skb; |
| __u32 rx_len; |
| __u8 tx_ident; |
| |
| __u8 disc_reason; |
| |
| struct delayed_work security_timer; |
| struct smp_chan *smp_chan; |
| |
| struct list_head chan_l; |
| struct mutex chan_lock; |
| struct kref ref; |
| struct list_head users; |
| }; |
| |
| struct l2cap_user { |
| struct list_head list; |
| int (*probe) (struct l2cap_conn *conn, struct l2cap_user *user); |
| void (*remove) (struct l2cap_conn *conn, struct l2cap_user *user); |
| }; |
| |
| #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 |
| #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 |
| #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 |
| |
| #define L2CAP_CHAN_RAW 1 |
| #define L2CAP_CHAN_CONN_LESS 2 |
| #define L2CAP_CHAN_CONN_ORIENTED 3 |
| #define L2CAP_CHAN_CONN_FIX_A2MP 4 |
| |
| /* ----- L2CAP socket info ----- */ |
| #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) |
| |
| struct l2cap_pinfo { |
| struct bt_sock bt; |
| struct l2cap_chan *chan; |
| struct sk_buff *rx_busy_skb; |
| }; |
| |
| enum { |
| CONF_REQ_SENT, |
| CONF_INPUT_DONE, |
| CONF_OUTPUT_DONE, |
| CONF_MTU_DONE, |
| CONF_MODE_DONE, |
| CONF_CONNECT_PEND, |
| CONF_RECV_NO_FCS, |
| CONF_STATE2_DEVICE, |
| CONF_EWS_RECV, |
| CONF_LOC_CONF_PEND, |
| CONF_REM_CONF_PEND, |
| CONF_NOT_COMPLETE, |
| }; |
| |
| #define L2CAP_CONF_MAX_CONF_REQ 2 |
| #define L2CAP_CONF_MAX_CONF_RSP 2 |
| |
| enum { |
| CONN_SREJ_SENT, |
| CONN_WAIT_F, |
| CONN_SREJ_ACT, |
| CONN_SEND_PBIT, |
| CONN_REMOTE_BUSY, |
| CONN_LOCAL_BUSY, |
| CONN_REJ_ACT, |
| CONN_SEND_FBIT, |
| CONN_RNR_SENT, |
| }; |
| |
| /* Definitions for flags in l2cap_chan */ |
| enum { |
| FLAG_ROLE_SWITCH, |
| FLAG_FORCE_ACTIVE, |
| FLAG_FORCE_RELIABLE, |
| FLAG_FLUSHABLE, |
| FLAG_EXT_CTRL, |
| FLAG_EFS_ENABLE, |
| FLAG_DEFER_SETUP, |
| }; |
| |
| enum { |
| L2CAP_TX_STATE_XMIT, |
| L2CAP_TX_STATE_WAIT_F, |
| }; |
| |
| enum { |
| L2CAP_RX_STATE_RECV, |
| L2CAP_RX_STATE_SREJ_SENT, |
| L2CAP_RX_STATE_MOVE, |
| L2CAP_RX_STATE_WAIT_P, |
| L2CAP_RX_STATE_WAIT_F, |
| }; |
| |
| enum { |
| L2CAP_TXSEQ_EXPECTED, |
| L2CAP_TXSEQ_EXPECTED_SREJ, |
| L2CAP_TXSEQ_UNEXPECTED, |
| L2CAP_TXSEQ_UNEXPECTED_SREJ, |
| L2CAP_TXSEQ_DUPLICATE, |
| L2CAP_TXSEQ_DUPLICATE_SREJ, |
| L2CAP_TXSEQ_INVALID, |
| L2CAP_TXSEQ_INVALID_IGNORE, |
| }; |
| |
| enum { |
| L2CAP_EV_DATA_REQUEST, |
| L2CAP_EV_LOCAL_BUSY_DETECTED, |
| L2CAP_EV_LOCAL_BUSY_CLEAR, |
| L2CAP_EV_RECV_REQSEQ_AND_FBIT, |
| L2CAP_EV_RECV_FBIT, |
| L2CAP_EV_RETRANS_TO, |
| L2CAP_EV_MONITOR_TO, |
| L2CAP_EV_EXPLICIT_POLL, |
| L2CAP_EV_RECV_IFRAME, |
| L2CAP_EV_RECV_RR, |
| L2CAP_EV_RECV_REJ, |
| L2CAP_EV_RECV_RNR, |
| L2CAP_EV_RECV_SREJ, |
| L2CAP_EV_RECV_FRAME, |
| }; |
| |
| enum { |
| L2CAP_MOVE_ROLE_NONE, |
| L2CAP_MOVE_ROLE_INITIATOR, |
| L2CAP_MOVE_ROLE_RESPONDER, |
| }; |
| |
| enum { |
| L2CAP_MOVE_STABLE, |
| L2CAP_MOVE_WAIT_REQ, |
| L2CAP_MOVE_WAIT_RSP, |
| L2CAP_MOVE_WAIT_RSP_SUCCESS, |
| L2CAP_MOVE_WAIT_CONFIRM, |
| L2CAP_MOVE_WAIT_CONFIRM_RSP, |
| L2CAP_MOVE_WAIT_LOGICAL_COMP, |
| L2CAP_MOVE_WAIT_LOGICAL_CFM, |
| L2CAP_MOVE_WAIT_LOCAL_BUSY, |
| L2CAP_MOVE_WAIT_PREPARE, |
| }; |
| |
| void l2cap_chan_hold(struct l2cap_chan *c); |
| void l2cap_chan_put(struct l2cap_chan *c); |
| |
| static inline void l2cap_chan_lock(struct l2cap_chan *chan) |
| { |
| mutex_lock(&chan->lock); |
| } |
| |
| static inline void l2cap_chan_unlock(struct l2cap_chan *chan) |
| { |
| mutex_unlock(&chan->lock); |
| } |
| |
| static inline void l2cap_set_timer(struct l2cap_chan *chan, |
| struct delayed_work *work, long timeout) |
| { |
| BT_DBG("chan %p state %s timeout %ld", chan, |
| state_to_string(chan->state), timeout); |
| |
| /* If delayed work cancelled do not hold(chan) |
| since it is already done with previous set_timer */ |
| if (!cancel_delayed_work(work)) |
| l2cap_chan_hold(chan); |
| |
| schedule_delayed_work(work, timeout); |
| } |
| |
| static inline bool l2cap_clear_timer(struct l2cap_chan *chan, |
| struct delayed_work *work) |
| { |
| bool ret; |
| |
| /* put(chan) if delayed work cancelled otherwise it |
| is done in delayed work function */ |
| ret = cancel_delayed_work(work); |
| if (ret) |
| l2cap_chan_put(chan); |
| |
| return ret; |
| } |
| |
| #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) |
| #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer) |
| #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer) |
| #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer) |
| #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ |
| msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO)); |
| #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer) |
| |
| static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2) |
| { |
| if (seq1 >= seq2) |
| return seq1 - seq2; |
| else |
| return chan->tx_win_max + 1 - seq2 + seq1; |
| } |
| |
| static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq) |
| { |
| return (seq + 1) % (chan->tx_win_max + 1); |
| } |
| |
| static inline struct l2cap_chan *l2cap_chan_no_new_connection(struct l2cap_chan *chan) |
| { |
| return NULL; |
| } |
| |
| static inline void l2cap_chan_no_teardown(struct l2cap_chan *chan, int err) |
| { |
| } |
| |
| static inline void l2cap_chan_no_ready(struct l2cap_chan *chan) |
| { |
| } |
| |
| static inline void l2cap_chan_no_defer(struct l2cap_chan *chan) |
| { |
| } |
| |
| static inline void l2cap_chan_no_resume(struct l2cap_chan *chan) |
| { |
| } |
| |
| static inline void l2cap_chan_no_set_shutdown(struct l2cap_chan *chan) |
| { |
| } |
| |
| static inline long l2cap_chan_no_get_sndtimeo(struct l2cap_chan *chan) |
| { |
| return 0; |
| } |
| |
| extern bool disable_ertm; |
| |
| int l2cap_init_sockets(void); |
| void l2cap_cleanup_sockets(void); |
| bool l2cap_is_socket(struct socket *sock); |
| |
| void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); |
| |
| int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); |
| int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); |
| |
| struct l2cap_chan *l2cap_chan_create(void); |
| void l2cap_chan_close(struct l2cap_chan *chan, int reason); |
| int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, |
| bdaddr_t *dst, u8 dst_type); |
| int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len, |
| u32 priority); |
| void l2cap_chan_busy(struct l2cap_chan *chan, int busy); |
| int l2cap_chan_check_security(struct l2cap_chan *chan); |
| void l2cap_chan_set_defaults(struct l2cap_chan *chan); |
| int l2cap_ertm_init(struct l2cap_chan *chan); |
| void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan); |
| void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan); |
| void l2cap_chan_del(struct l2cap_chan *chan, int err); |
| void l2cap_send_conn_req(struct l2cap_chan *chan); |
| void l2cap_move_start(struct l2cap_chan *chan); |
| void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan, |
| u8 status); |
| void __l2cap_physical_cfm(struct l2cap_chan *chan, int result); |
| |
| void l2cap_conn_get(struct l2cap_conn *conn); |
| void l2cap_conn_put(struct l2cap_conn *conn); |
| |
| int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user); |
| void l2cap_unregister_user(struct l2cap_conn *conn, struct l2cap_user *user); |
| |
| #endif /* __L2CAP_H */ |