HCI_LIMITED_PRIVACY,
HCI_RPA_EXPIRED,
HCI_RPA_RESOLVING,
- HCI_HS_ENABLED,
HCI_LE_ENABLED,
HCI_ADVERTISING,
HCI_ADVERTISING_CONNECTABLE,
#define L2CAP_WAIT_ACK_POLL_PERIOD msecs_to_jiffies(200)
#define L2CAP_WAIT_ACK_TIMEOUT msecs_to_jiffies(10000)
-#define L2CAP_A2MP_DEFAULT_MTU 670
-
/* L2CAP socket address */
struct sockaddr_l2 {
sa_family_t l2_family;
#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
#define L2CAP_LE_CONN_REQ 0x14
/* L2CAP fixed channels */
#define L2CAP_FC_SIG_BREDR 0x02
#define L2CAP_FC_CONNLESS 0x04
-#define L2CAP_FC_A2MP 0x08
#define L2CAP_FC_ATT 0x10
#define L2CAP_FC_SIG_LE 0x20
#define L2CAP_FC_SMP_LE 0x40
/* channel identifier */
#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_CR_BAD_PSM 0x0002
#define L2CAP_CR_SEC_BLOCK 0x0003
#define L2CAP_CR_NO_MEM 0x0004
-#define L2CAP_CR_BAD_AMP 0x0005
#define L2CAP_CR_INVALID_SCID 0x0006
#define L2CAP_CR_SCID_IN_USE 0x0007
__u8 data[];
} __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
struct l2cap_chan {
struct l2cap_conn *conn;
- struct hci_conn *hs_hcon;
- struct hci_chan *hs_hchan;
struct kref kref;
atomic_t nesting;
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;
source "net/bluetooth/hidp/Kconfig"
-config BT_HS
- bool "Bluetooth High Speed (HS) features"
- depends on BT_BREDR
- help
- Bluetooth High Speed includes support for off-loading
- Bluetooth connections via 802.11 (wifi) physical layer
- available with Bluetooth version 3.0 or later.
-
config BT_LE
bool "Bluetooth Low Energy (LE) features"
depends on BT
bluetooth-$(CONFIG_BT_BREDR) += sco.o
bluetooth-$(CONFIG_BT_LE) += iso.o
-bluetooth-$(CONFIG_BT_HS) += a2mp.o amp.o
bluetooth-$(CONFIG_BT_LEDS) += leds.o
bluetooth-$(CONFIG_BT_MSFTEXT) += msft.o
bluetooth-$(CONFIG_BT_AOSPEXT) += aosp.o
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- Copyright (c) 2010,2011 Code Aurora Forum. All rights reserved.
- Copyright (c) 2011,2012 Intel Corp.
-
-*/
-
-#include <net/bluetooth/bluetooth.h>
-#include <net/bluetooth/hci_core.h>
-#include <net/bluetooth/l2cap.h>
-
-#include "hci_request.h"
-#include "a2mp.h"
-#include "amp.h"
-
-#define A2MP_FEAT_EXT 0x8000
-
-/* Global AMP Manager list */
-static LIST_HEAD(amp_mgr_list);
-static DEFINE_MUTEX(amp_mgr_list_lock);
-
-/* A2MP build & send command helper functions */
-static struct a2mp_cmd *__a2mp_build(u8 code, u8 ident, u16 len, void *data)
-{
- struct a2mp_cmd *cmd;
- int plen;
-
- plen = sizeof(*cmd) + len;
- cmd = kzalloc(plen, GFP_KERNEL);
- if (!cmd)
- return NULL;
-
- cmd->code = code;
- cmd->ident = ident;
- cmd->len = cpu_to_le16(len);
-
- memcpy(cmd->data, data, len);
-
- return cmd;
-}
-
-static void a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len, void *data)
-{
- struct l2cap_chan *chan = mgr->a2mp_chan;
- struct a2mp_cmd *cmd;
- u16 total_len = len + sizeof(*cmd);
- struct kvec iv;
- struct msghdr msg;
-
- cmd = __a2mp_build(code, ident, len, data);
- if (!cmd)
- return;
-
- iv.iov_base = cmd;
- iv.iov_len = total_len;
-
- memset(&msg, 0, sizeof(msg));
-
- iov_iter_kvec(&msg.msg_iter, ITER_SOURCE, &iv, 1, total_len);
-
- l2cap_chan_send(chan, &msg, total_len);
-
- kfree(cmd);
-}
-
-static u8 __next_ident(struct amp_mgr *mgr)
-{
- if (++mgr->ident == 0)
- mgr->ident = 1;
-
- return mgr->ident;
-}
-
-static struct amp_mgr *amp_mgr_lookup_by_state(u8 state)
-{
- struct amp_mgr *mgr;
-
- mutex_lock(&_mgr_list_lock);
- list_for_each_entry(mgr, &_mgr_list, list) {
- if (test_and_clear_bit(state, &mgr->state)) {
- amp_mgr_get(mgr);
- mutex_unlock(&_mgr_list_lock);
- return mgr;
- }
- }
- mutex_unlock(&_mgr_list_lock);
-
- return NULL;
-}
-
-/* hci_dev_list shall be locked */
-static void __a2mp_add_cl(struct amp_mgr *mgr, struct a2mp_cl *cl)
-{
- struct hci_dev *hdev;
- int i = 1;
-
- cl[0].id = AMP_ID_BREDR;
- cl[0].type = AMP_TYPE_BREDR;
- cl[0].status = AMP_STATUS_BLUETOOTH_ONLY;
-
- list_for_each_entry(hdev, &hci_dev_list, list) {
- if (hdev->dev_type == HCI_AMP) {
- cl[i].id = hdev->id;
- cl[i].type = hdev->amp_type;
- if (test_bit(HCI_UP, &hdev->flags))
- cl[i].status = hdev->amp_status;
- else
- cl[i].status = AMP_STATUS_POWERED_DOWN;
- i++;
- }
- }
-}
-
-/* Processing A2MP messages */
-static int a2mp_command_rej(struct amp_mgr *mgr, struct sk_buff *skb,
- struct a2mp_cmd *hdr)
-{
- struct a2mp_cmd_rej *rej = (void *) skb->data;
-
- if (le16_to_cpu(hdr->len) < sizeof(*rej))
- return -EINVAL;
-
- BT_DBG("ident %u reason %d", hdr->ident, le16_to_cpu(rej->reason));
-
- skb_pull(skb, sizeof(*rej));
-
- return 0;
-}
-
-static int a2mp_discover_req(struct amp_mgr *mgr, struct sk_buff *skb,
- struct a2mp_cmd *hdr)
-{
- struct a2mp_discov_req *req = (void *) skb->data;
- u16 len = le16_to_cpu(hdr->len);
- struct a2mp_discov_rsp *rsp;
- u16 ext_feat;
- u8 num_ctrl;
- struct hci_dev *hdev;
-
- if (len < sizeof(*req))
- return -EINVAL;
-
- skb_pull(skb, sizeof(*req));
-
- ext_feat = le16_to_cpu(req->ext_feat);
-
- BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(req->mtu), ext_feat);
-
- /* check that packet is not broken for now */
- while (ext_feat & A2MP_FEAT_EXT) {
- if (len < sizeof(ext_feat))
- return -EINVAL;
-
- ext_feat = get_unaligned_le16(skb->data);
- BT_DBG("efm 0x%4.4x", ext_feat);
- len -= sizeof(ext_feat);
- skb_pull(skb, sizeof(ext_feat));
- }
-
- read_lock(&hci_dev_list_lock);
-
- /* at minimum the BR/EDR needs to be listed */
- num_ctrl = 1;
-
- list_for_each_entry(hdev, &hci_dev_list, list) {
- if (hdev->dev_type == HCI_AMP)
- num_ctrl++;
- }
-
- len = struct_size(rsp, cl, num_ctrl);
- rsp = kmalloc(len, GFP_ATOMIC);
- if (!rsp) {
- read_unlock(&hci_dev_list_lock);
- return -ENOMEM;
- }
-
- rsp->mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
- rsp->ext_feat = 0;
-
- __a2mp_add_cl(mgr, rsp->cl);
-
- read_unlock(&hci_dev_list_lock);
-
- a2mp_send(mgr, A2MP_DISCOVER_RSP, hdr->ident, len, rsp);
-
- kfree(rsp);
- return 0;
-}
-
-static int a2mp_discover_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
- struct a2mp_cmd *hdr)
-{
- struct a2mp_discov_rsp *rsp = (void *) skb->data;
- u16 len = le16_to_cpu(hdr->len);
- struct a2mp_cl *cl;
- u16 ext_feat;
- bool found = false;
-
- if (len < sizeof(*rsp))
- return -EINVAL;
-
- len -= sizeof(*rsp);
- skb_pull(skb, sizeof(*rsp));
-
- ext_feat = le16_to_cpu(rsp->ext_feat);
-
- BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(rsp->mtu), ext_feat);
-
- /* check that packet is not broken for now */
- while (ext_feat & A2MP_FEAT_EXT) {
- if (len < sizeof(ext_feat))
- return -EINVAL;
-
- ext_feat = get_unaligned_le16(skb->data);
- BT_DBG("efm 0x%4.4x", ext_feat);
- len -= sizeof(ext_feat);
- skb_pull(skb, sizeof(ext_feat));
- }
-
- cl = (void *) skb->data;
- while (len >= sizeof(*cl)) {
- BT_DBG("Remote AMP id %u type %u status %u", cl->id, cl->type,
- cl->status);
-
- if (cl->id != AMP_ID_BREDR && cl->type != AMP_TYPE_BREDR) {
- struct a2mp_info_req req;
-
- found = true;
-
- memset(&req, 0, sizeof(req));
-
- req.id = cl->id;
- a2mp_send(mgr, A2MP_GETINFO_REQ, __next_ident(mgr),
- sizeof(req), &req);
- }
-
- len -= sizeof(*cl);
- cl = skb_pull(skb, sizeof(*cl));
- }
-
- /* Fall back to L2CAP init sequence */
- if (!found) {
- struct l2cap_conn *conn = mgr->l2cap_conn;
- struct l2cap_chan *chan;
-
- mutex_lock(&conn->chan_lock);
-
- list_for_each_entry(chan, &conn->chan_l, list) {
-
- BT_DBG("chan %p state %s", chan,
- state_to_string(chan->state));
-
- if (chan->scid == L2CAP_CID_A2MP)
- continue;
-
- l2cap_chan_lock(chan);
-
- if (chan->state == BT_CONNECT)
- l2cap_send_conn_req(chan);
-
- l2cap_chan_unlock(chan);
- }
-
- mutex_unlock(&conn->chan_lock);
- }
-
- return 0;
-}
-
-static int a2mp_change_notify(struct amp_mgr *mgr, struct sk_buff *skb,
- struct a2mp_cmd *hdr)
-{
- struct a2mp_cl *cl = (void *) skb->data;
-
- while (skb->len >= sizeof(*cl)) {
- BT_DBG("Controller id %u type %u status %u", cl->id, cl->type,
- cl->status);
- cl = skb_pull(skb, sizeof(*cl));
- }
-
- /* TODO send A2MP_CHANGE_RSP */
-
- return 0;
-}
-
-static void read_local_amp_info_complete(struct hci_dev *hdev, u8 status,
- u16 opcode)
-{
- BT_DBG("%s status 0x%2.2x", hdev->name, status);
-
- a2mp_send_getinfo_rsp(hdev);
-}
-
-static int a2mp_getinfo_req(struct amp_mgr *mgr, struct sk_buff *skb,
- struct a2mp_cmd *hdr)
-{
- struct a2mp_info_req *req = (void *) skb->data;
- struct hci_dev *hdev;
- struct hci_request hreq;
- int err = 0;
-
- if (le16_to_cpu(hdr->len) < sizeof(*req))
- return -EINVAL;
-
- BT_DBG("id %u", req->id);
-
- hdev = hci_dev_get(req->id);
- if (!hdev || hdev->dev_type != HCI_AMP) {
- struct a2mp_info_rsp rsp;
-
- memset(&rsp, 0, sizeof(rsp));
-
- rsp.id = req->id;
- rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
-
- a2mp_send(mgr, A2MP_GETINFO_RSP, hdr->ident, sizeof(rsp),
- &rsp);
-
- goto done;
- }
-
- set_bit(READ_LOC_AMP_INFO, &mgr->state);
- hci_req_init(&hreq, hdev);
- hci_req_add(&hreq, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL);
- err = hci_req_run(&hreq, read_local_amp_info_complete);
- if (err < 0)
- a2mp_send_getinfo_rsp(hdev);
-
-done:
- if (hdev)
- hci_dev_put(hdev);
-
- skb_pull(skb, sizeof(*req));
- return 0;
-}
-
-static int a2mp_getinfo_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
- struct a2mp_cmd *hdr)
-{
- struct a2mp_info_rsp *rsp = (struct a2mp_info_rsp *) skb->data;
- struct a2mp_amp_assoc_req req;
- struct amp_ctrl *ctrl;
-
- if (le16_to_cpu(hdr->len) < sizeof(*rsp))
- return -EINVAL;
-
- BT_DBG("id %u status 0x%2.2x", rsp->id, rsp->status);
-
- if (rsp->status)
- return -EINVAL;
-
- ctrl = amp_ctrl_add(mgr, rsp->id);
- if (!ctrl)
- return -ENOMEM;
-
- memset(&req, 0, sizeof(req));
-
- req.id = rsp->id;
- a2mp_send(mgr, A2MP_GETAMPASSOC_REQ, __next_ident(mgr), sizeof(req),
- &req);
-
- skb_pull(skb, sizeof(*rsp));
- return 0;
-}
-
-static int a2mp_getampassoc_req(struct amp_mgr *mgr, struct sk_buff *skb,
- struct a2mp_cmd *hdr)
-{
- struct a2mp_amp_assoc_req *req = (void *) skb->data;
- struct hci_dev *hdev;
- struct amp_mgr *tmp;
-
- if (le16_to_cpu(hdr->len) < sizeof(*req))
- return -EINVAL;
-
- BT_DBG("id %u", req->id);
-
- /* Make sure that other request is not processed */
- tmp = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC);
-
- hdev = hci_dev_get(req->id);
- if (!hdev || hdev->amp_type == AMP_TYPE_BREDR || tmp) {
- struct a2mp_amp_assoc_rsp rsp;
-
- memset(&rsp, 0, sizeof(rsp));
- rsp.id = req->id;
-
- if (tmp) {
- rsp.status = A2MP_STATUS_COLLISION_OCCURED;
- amp_mgr_put(tmp);
- } else {
- rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
- }
-
- a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, hdr->ident, sizeof(rsp),
- &rsp);
-
- goto done;
- }
-
- amp_read_loc_assoc(hdev, mgr);
-
-done:
- if (hdev)
- hci_dev_put(hdev);
-
- skb_pull(skb, sizeof(*req));
- return 0;
-}
-
-static int a2mp_getampassoc_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
- struct a2mp_cmd *hdr)
-{
- struct a2mp_amp_assoc_rsp *rsp = (void *) skb->data;
- u16 len = le16_to_cpu(hdr->len);
- struct hci_dev *hdev;
- struct amp_ctrl *ctrl;
- struct hci_conn *hcon;
- size_t assoc_len;
-
- if (len < sizeof(*rsp))
- return -EINVAL;
-
- assoc_len = len - sizeof(*rsp);
-
- BT_DBG("id %u status 0x%2.2x assoc len %zu", rsp->id, rsp->status,
- assoc_len);
-
- if (rsp->status)
- return -EINVAL;
-
- /* Save remote ASSOC data */
- ctrl = amp_ctrl_lookup(mgr, rsp->id);
- if (ctrl) {
- u8 *assoc;
-
- assoc = kmemdup(rsp->amp_assoc, assoc_len, GFP_KERNEL);
- if (!assoc) {
- amp_ctrl_put(ctrl);
- return -ENOMEM;
- }
-
- ctrl->assoc = assoc;
- ctrl->assoc_len = assoc_len;
- ctrl->assoc_rem_len = assoc_len;
- ctrl->assoc_len_so_far = 0;
-
- amp_ctrl_put(ctrl);
- }
-
- /* Create Phys Link */
- hdev = hci_dev_get(rsp->id);
- if (!hdev)
- return -EINVAL;
-
- hcon = phylink_add(hdev, mgr, rsp->id, true);
- if (!hcon)
- goto done;
-
- BT_DBG("Created hcon %p: loc:%u -> rem:%u", hcon, hdev->id, rsp->id);
-
- mgr->bredr_chan->remote_amp_id = rsp->id;
-
- amp_create_phylink(hdev, mgr, hcon);
-
-done:
- hci_dev_put(hdev);
- skb_pull(skb, len);
- return 0;
-}
-
-static int a2mp_createphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
- struct a2mp_cmd *hdr)
-{
- struct a2mp_physlink_req *req = (void *) skb->data;
- struct a2mp_physlink_rsp rsp;
- struct hci_dev *hdev;
- struct hci_conn *hcon;
- struct amp_ctrl *ctrl;
-
- if (le16_to_cpu(hdr->len) < sizeof(*req))
- return -EINVAL;
-
- BT_DBG("local_id %u, remote_id %u", req->local_id, req->remote_id);
-
- memset(&rsp, 0, sizeof(rsp));
-
- rsp.local_id = req->remote_id;
- rsp.remote_id = req->local_id;
-
- hdev = hci_dev_get(req->remote_id);
- if (!hdev || hdev->amp_type == AMP_TYPE_BREDR) {
- rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
- goto send_rsp;
- }
-
- ctrl = amp_ctrl_lookup(mgr, rsp.remote_id);
- if (!ctrl) {
- ctrl = amp_ctrl_add(mgr, rsp.remote_id);
- if (ctrl) {
- amp_ctrl_get(ctrl);
- } else {
- rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
- goto send_rsp;
- }
- }
-
- if (ctrl) {
- size_t assoc_len = le16_to_cpu(hdr->len) - sizeof(*req);
- u8 *assoc;
-
- assoc = kmemdup(req->amp_assoc, assoc_len, GFP_KERNEL);
- if (!assoc) {
- amp_ctrl_put(ctrl);
- hci_dev_put(hdev);
- return -ENOMEM;
- }
-
- ctrl->assoc = assoc;
- ctrl->assoc_len = assoc_len;
- ctrl->assoc_rem_len = assoc_len;
- ctrl->assoc_len_so_far = 0;
-
- amp_ctrl_put(ctrl);
- }
-
- hcon = phylink_add(hdev, mgr, req->local_id, false);
- if (hcon) {
- amp_accept_phylink(hdev, mgr, hcon);
- rsp.status = A2MP_STATUS_SUCCESS;
- } else {
- rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
- }
-
-send_rsp:
- if (hdev)
- hci_dev_put(hdev);
-
- /* Reply error now and success after HCI Write Remote AMP Assoc
- command complete with success status
- */
- if (rsp.status != A2MP_STATUS_SUCCESS) {
- a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, hdr->ident,
- sizeof(rsp), &rsp);
- } else {
- set_bit(WRITE_REMOTE_AMP_ASSOC, &mgr->state);
- mgr->ident = hdr->ident;
- }
-
- skb_pull(skb, le16_to_cpu(hdr->len));
- return 0;
-}
-
-static int a2mp_discphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
- struct a2mp_cmd *hdr)
-{
- struct a2mp_physlink_req *req = (void *) skb->data;
- struct a2mp_physlink_rsp rsp;
- struct hci_dev *hdev;
- struct hci_conn *hcon;
-
- if (le16_to_cpu(hdr->len) < sizeof(*req))
- return -EINVAL;
-
- BT_DBG("local_id %u remote_id %u", req->local_id, req->remote_id);
-
- memset(&rsp, 0, sizeof(rsp));
-
- rsp.local_id = req->remote_id;
- rsp.remote_id = req->local_id;
- rsp.status = A2MP_STATUS_SUCCESS;
-
- hdev = hci_dev_get(req->remote_id);
- if (!hdev) {
- rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
- goto send_rsp;
- }
-
- hcon = hci_conn_hash_lookup_ba(hdev, AMP_LINK,
- &mgr->l2cap_conn->hcon->dst);
- if (!hcon) {
- bt_dev_err(hdev, "no phys link exist");
- rsp.status = A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS;
- goto clean;
- }
-
- /* TODO Disconnect Phys Link here */
-
-clean:
- hci_dev_put(hdev);
-
-send_rsp:
- a2mp_send(mgr, A2MP_DISCONNPHYSLINK_RSP, hdr->ident, sizeof(rsp), &rsp);
-
- skb_pull(skb, sizeof(*req));
- return 0;
-}
-
-static inline int a2mp_cmd_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
- struct a2mp_cmd *hdr)
-{
- BT_DBG("ident %u code 0x%2.2x", hdr->ident, hdr->code);
-
- skb_pull(skb, le16_to_cpu(hdr->len));
- return 0;
-}
-
-/* Handle A2MP signalling */
-static int a2mp_chan_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb)
-{
- struct a2mp_cmd *hdr;
- struct amp_mgr *mgr = chan->data;
- int err = 0;
-
- amp_mgr_get(mgr);
-
- while (skb->len >= sizeof(*hdr)) {
- u16 len;
-
- hdr = (void *) skb->data;
- len = le16_to_cpu(hdr->len);
-
- BT_DBG("code 0x%2.2x id %u len %u", hdr->code, hdr->ident, len);
-
- skb_pull(skb, sizeof(*hdr));
-
- if (len > skb->len || !hdr->ident) {
- err = -EINVAL;
- break;
- }
-
- mgr->ident = hdr->ident;
-
- switch (hdr->code) {
- case A2MP_COMMAND_REJ:
- a2mp_command_rej(mgr, skb, hdr);
- break;
-
- case A2MP_DISCOVER_REQ:
- err = a2mp_discover_req(mgr, skb, hdr);
- break;
-
- case A2MP_CHANGE_NOTIFY:
- err = a2mp_change_notify(mgr, skb, hdr);
- break;
-
- case A2MP_GETINFO_REQ:
- err = a2mp_getinfo_req(mgr, skb, hdr);
- break;
-
- case A2MP_GETAMPASSOC_REQ:
- err = a2mp_getampassoc_req(mgr, skb, hdr);
- break;
-
- case A2MP_CREATEPHYSLINK_REQ:
- err = a2mp_createphyslink_req(mgr, skb, hdr);
- break;
-
- case A2MP_DISCONNPHYSLINK_REQ:
- err = a2mp_discphyslink_req(mgr, skb, hdr);
- break;
-
- case A2MP_DISCOVER_RSP:
- err = a2mp_discover_rsp(mgr, skb, hdr);
- break;
-
- case A2MP_GETINFO_RSP:
- err = a2mp_getinfo_rsp(mgr, skb, hdr);
- break;
-
- case A2MP_GETAMPASSOC_RSP:
- err = a2mp_getampassoc_rsp(mgr, skb, hdr);
- break;
-
- case A2MP_CHANGE_RSP:
- case A2MP_CREATEPHYSLINK_RSP:
- case A2MP_DISCONNPHYSLINK_RSP:
- err = a2mp_cmd_rsp(mgr, skb, hdr);
- break;
-
- default:
- BT_ERR("Unknown A2MP sig cmd 0x%2.2x", hdr->code);
- err = -EINVAL;
- break;
- }
- }
-
- if (err) {
- struct a2mp_cmd_rej rej;
-
- memset(&rej, 0, sizeof(rej));
-
- rej.reason = cpu_to_le16(0);
- hdr = (void *) skb->data;
-
- BT_DBG("Send A2MP Rej: cmd 0x%2.2x err %d", hdr->code, err);
-
- a2mp_send(mgr, A2MP_COMMAND_REJ, hdr->ident, sizeof(rej),
- &rej);
- }
-
- /* Always free skb and return success error code to prevent
- from sending L2CAP Disconnect over A2MP channel */
- kfree_skb(skb);
-
- amp_mgr_put(mgr);
-
- return 0;
-}
-
-static void a2mp_chan_close_cb(struct l2cap_chan *chan)
-{
- l2cap_chan_put(chan);
-}
-
-static void a2mp_chan_state_change_cb(struct l2cap_chan *chan, int state,
- int err)
-{
- struct amp_mgr *mgr = chan->data;
-
- if (!mgr)
- return;
-
- BT_DBG("chan %p state %s", chan, state_to_string(state));
-
- chan->state = state;
-
- switch (state) {
- case BT_CLOSED:
- if (mgr)
- amp_mgr_put(mgr);
- break;
- }
-}
-
-static struct sk_buff *a2mp_chan_alloc_skb_cb(struct l2cap_chan *chan,
- unsigned long hdr_len,
- unsigned long len, int nb)
-{
- struct sk_buff *skb;
-
- skb = bt_skb_alloc(hdr_len + len, GFP_KERNEL);
- if (!skb)
- return ERR_PTR(-ENOMEM);
-
- return skb;
-}
-
-static const struct l2cap_ops a2mp_chan_ops = {
- .name = "L2CAP A2MP channel",
- .recv = a2mp_chan_recv_cb,
- .close = a2mp_chan_close_cb,
- .state_change = a2mp_chan_state_change_cb,
- .alloc_skb = a2mp_chan_alloc_skb_cb,
-
- /* Not implemented for A2MP */
- .new_connection = l2cap_chan_no_new_connection,
- .teardown = l2cap_chan_no_teardown,
- .ready = l2cap_chan_no_ready,
- .defer = l2cap_chan_no_defer,
- .resume = l2cap_chan_no_resume,
- .set_shutdown = l2cap_chan_no_set_shutdown,
- .get_sndtimeo = l2cap_chan_no_get_sndtimeo,
-};
-
-static struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn, bool locked)
-{
- struct l2cap_chan *chan;
- int err;
-
- chan = l2cap_chan_create();
- if (!chan)
- return NULL;
-
- BT_DBG("chan %p", chan);
-
- chan->chan_type = L2CAP_CHAN_FIXED;
- chan->scid = L2CAP_CID_A2MP;
- chan->dcid = L2CAP_CID_A2MP;
- chan->omtu = L2CAP_A2MP_DEFAULT_MTU;
- chan->imtu = L2CAP_A2MP_DEFAULT_MTU;
- chan->flush_to = L2CAP_DEFAULT_FLUSH_TO;
-
- chan->ops = &a2mp_chan_ops;
-
- l2cap_chan_set_defaults(chan);
- chan->remote_max_tx = chan->max_tx;
- chan->remote_tx_win = chan->tx_win;
-
- chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO;
- chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO;
-
- skb_queue_head_init(&chan->tx_q);
-
- chan->mode = L2CAP_MODE_ERTM;
-
- err = l2cap_ertm_init(chan);
- if (err < 0) {
- l2cap_chan_del(chan, 0);
- return NULL;
- }
-
- chan->conf_state = 0;
-
- if (locked)
- __l2cap_chan_add(conn, chan);
- else
- l2cap_chan_add(conn, chan);
-
- chan->remote_mps = chan->omtu;
- chan->mps = chan->omtu;
-
- chan->state = BT_CONNECTED;
-
- return chan;
-}
-
-/* AMP Manager functions */
-struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr)
-{
- BT_DBG("mgr %p orig refcnt %d", mgr, kref_read(&mgr->kref));
-
- kref_get(&mgr->kref);
-
- return mgr;
-}
-
-static void amp_mgr_destroy(struct kref *kref)
-{
- struct amp_mgr *mgr = container_of(kref, struct amp_mgr, kref);
-
- BT_DBG("mgr %p", mgr);
-
- mutex_lock(&_mgr_list_lock);
- list_del(&mgr->list);
- mutex_unlock(&_mgr_list_lock);
-
- amp_ctrl_list_flush(mgr);
- kfree(mgr);
-}
-
-int amp_mgr_put(struct amp_mgr *mgr)
-{
- BT_DBG("mgr %p orig refcnt %d", mgr, kref_read(&mgr->kref));
-
- return kref_put(&mgr->kref, &_mgr_destroy);
-}
-
-static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn, bool locked)
-{
- struct amp_mgr *mgr;
- struct l2cap_chan *chan;
-
- mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
- if (!mgr)
- return NULL;
-
- BT_DBG("conn %p mgr %p", conn, mgr);
-
- mgr->l2cap_conn = conn;
-
- chan = a2mp_chan_open(conn, locked);
- if (!chan) {
- kfree(mgr);
- return NULL;
- }
-
- mgr->a2mp_chan = chan;
- chan->data = mgr;
-
- conn->hcon->amp_mgr = mgr;
-
- kref_init(&mgr->kref);
-
- /* Remote AMP ctrl list initialization */
- INIT_LIST_HEAD(&mgr->amp_ctrls);
- mutex_init(&mgr->amp_ctrls_lock);
-
- mutex_lock(&_mgr_list_lock);
- list_add(&mgr->list, &_mgr_list);
- mutex_unlock(&_mgr_list_lock);
-
- return mgr;
-}
-
-struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
- struct sk_buff *skb)
-{
- struct amp_mgr *mgr;
-
- if (conn->hcon->type != ACL_LINK)
- return NULL;
-
- mgr = amp_mgr_create(conn, false);
- if (!mgr) {
- BT_ERR("Could not create AMP manager");
- return NULL;
- }
-
- BT_DBG("mgr: %p chan %p", mgr, mgr->a2mp_chan);
-
- return mgr->a2mp_chan;
-}
-
-void a2mp_send_getinfo_rsp(struct hci_dev *hdev)
-{
- struct amp_mgr *mgr;
- struct a2mp_info_rsp rsp;
-
- mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_INFO);
- if (!mgr)
- return;
-
- BT_DBG("%s mgr %p", hdev->name, mgr);
-
- memset(&rsp, 0, sizeof(rsp));
-
- rsp.id = hdev->id;
- rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
-
- if (hdev->amp_type != AMP_TYPE_BREDR) {
- rsp.status = 0;
- rsp.total_bw = cpu_to_le32(hdev->amp_total_bw);
- rsp.max_bw = cpu_to_le32(hdev->amp_max_bw);
- rsp.min_latency = cpu_to_le32(hdev->amp_min_latency);
- rsp.pal_cap = cpu_to_le16(hdev->amp_pal_cap);
- rsp.assoc_size = cpu_to_le16(hdev->amp_assoc_size);
- }
-
- a2mp_send(mgr, A2MP_GETINFO_RSP, mgr->ident, sizeof(rsp), &rsp);
- amp_mgr_put(mgr);
-}
-
-void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status)
-{
- struct amp_mgr *mgr;
- struct amp_assoc *loc_assoc = &hdev->loc_assoc;
- struct a2mp_amp_assoc_rsp *rsp;
- size_t len;
-
- mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC);
- if (!mgr)
- return;
-
- BT_DBG("%s mgr %p", hdev->name, mgr);
-
- len = sizeof(struct a2mp_amp_assoc_rsp) + loc_assoc->len;
- rsp = kzalloc(len, GFP_KERNEL);
- if (!rsp) {
- amp_mgr_put(mgr);
- return;
- }
-
- rsp->id = hdev->id;
-
- if (status) {
- rsp->status = A2MP_STATUS_INVALID_CTRL_ID;
- } else {
- rsp->status = A2MP_STATUS_SUCCESS;
- memcpy(rsp->amp_assoc, loc_assoc->data, loc_assoc->len);
- }
-
- a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, mgr->ident, len, rsp);
- amp_mgr_put(mgr);
- kfree(rsp);
-}
-
-void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status)
-{
- struct amp_mgr *mgr;
- struct amp_assoc *loc_assoc = &hdev->loc_assoc;
- struct a2mp_physlink_req *req;
- struct l2cap_chan *bredr_chan;
- size_t len;
-
- mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC_FINAL);
- if (!mgr)
- return;
-
- len = sizeof(*req) + loc_assoc->len;
-
- BT_DBG("%s mgr %p assoc_len %zu", hdev->name, mgr, len);
-
- req = kzalloc(len, GFP_KERNEL);
- if (!req) {
- amp_mgr_put(mgr);
- return;
- }
-
- bredr_chan = mgr->bredr_chan;
- if (!bredr_chan)
- goto clean;
-
- req->local_id = hdev->id;
- req->remote_id = bredr_chan->remote_amp_id;
- memcpy(req->amp_assoc, loc_assoc->data, loc_assoc->len);
-
- a2mp_send(mgr, A2MP_CREATEPHYSLINK_REQ, __next_ident(mgr), len, req);
-
-clean:
- amp_mgr_put(mgr);
- kfree(req);
-}
-
-void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status)
-{
- struct amp_mgr *mgr;
- struct a2mp_physlink_rsp rsp;
- struct hci_conn *hs_hcon;
-
- mgr = amp_mgr_lookup_by_state(WRITE_REMOTE_AMP_ASSOC);
- if (!mgr)
- return;
-
- memset(&rsp, 0, sizeof(rsp));
-
- hs_hcon = hci_conn_hash_lookup_state(hdev, AMP_LINK, BT_CONNECT);
- if (!hs_hcon) {
- rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
- } else {
- rsp.remote_id = hs_hcon->remote_id;
- rsp.status = A2MP_STATUS_SUCCESS;
- }
-
- BT_DBG("%s mgr %p hs_hcon %p status %u", hdev->name, mgr, hs_hcon,
- status);
-
- rsp.local_id = hdev->id;
- a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, mgr->ident, sizeof(rsp), &rsp);
- amp_mgr_put(mgr);
-}
-
-void a2mp_discover_amp(struct l2cap_chan *chan)
-{
- struct l2cap_conn *conn = chan->conn;
- struct amp_mgr *mgr = conn->hcon->amp_mgr;
- struct a2mp_discov_req req;
-
- BT_DBG("chan %p conn %p mgr %p", chan, conn, mgr);
-
- if (!mgr) {
- mgr = amp_mgr_create(conn, true);
- if (!mgr)
- return;
- }
-
- mgr->bredr_chan = chan;
-
- memset(&req, 0, sizeof(req));
-
- req.mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
- req.ext_feat = 0;
- a2mp_send(mgr, A2MP_DISCOVER_REQ, 1, sizeof(req), &req);
-}
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- Copyright (c) 2010,2011 Code Aurora Forum. All rights reserved.
- Copyright (c) 2011,2012 Intel Corp.
-
-*/
-
-#ifndef __A2MP_H
-#define __A2MP_H
-
-#include <net/bluetooth/l2cap.h>
-
-enum amp_mgr_state {
- READ_LOC_AMP_INFO,
- READ_LOC_AMP_ASSOC,
- READ_LOC_AMP_ASSOC_FINAL,
- WRITE_REMOTE_AMP_ASSOC,
-};
-
-struct amp_mgr {
- struct list_head list;
- struct l2cap_conn *l2cap_conn;
- struct l2cap_chan *a2mp_chan;
- struct l2cap_chan *bredr_chan;
- struct kref kref;
- __u8 ident;
- __u8 handle;
- unsigned long state;
- unsigned long flags;
-
- struct list_head amp_ctrls;
- struct mutex amp_ctrls_lock;
-};
-
-struct a2mp_cmd {
- __u8 code;
- __u8 ident;
- __le16 len;
- __u8 data[];
-} __packed;
-
-/* A2MP command codes */
-#define A2MP_COMMAND_REJ 0x01
-struct a2mp_cmd_rej {
- __le16 reason;
- __u8 data[];
-} __packed;
-
-#define A2MP_DISCOVER_REQ 0x02
-struct a2mp_discov_req {
- __le16 mtu;
- __le16 ext_feat;
-} __packed;
-
-struct a2mp_cl {
- __u8 id;
- __u8 type;
- __u8 status;
-} __packed;
-
-#define A2MP_DISCOVER_RSP 0x03
-struct a2mp_discov_rsp {
- __le16 mtu;
- __le16 ext_feat;
- struct a2mp_cl cl[];
-} __packed;
-
-#define A2MP_CHANGE_NOTIFY 0x04
-#define A2MP_CHANGE_RSP 0x05
-
-#define A2MP_GETINFO_REQ 0x06
-struct a2mp_info_req {
- __u8 id;
-} __packed;
-
-#define A2MP_GETINFO_RSP 0x07
-struct a2mp_info_rsp {
- __u8 id;
- __u8 status;
- __le32 total_bw;
- __le32 max_bw;
- __le32 min_latency;
- __le16 pal_cap;
- __le16 assoc_size;
-} __packed;
-
-#define A2MP_GETAMPASSOC_REQ 0x08
-struct a2mp_amp_assoc_req {
- __u8 id;
-} __packed;
-
-#define A2MP_GETAMPASSOC_RSP 0x09
-struct a2mp_amp_assoc_rsp {
- __u8 id;
- __u8 status;
- __u8 amp_assoc[];
-} __packed;
-
-#define A2MP_CREATEPHYSLINK_REQ 0x0A
-#define A2MP_DISCONNPHYSLINK_REQ 0x0C
-struct a2mp_physlink_req {
- __u8 local_id;
- __u8 remote_id;
- __u8 amp_assoc[];
-} __packed;
-
-#define A2MP_CREATEPHYSLINK_RSP 0x0B
-#define A2MP_DISCONNPHYSLINK_RSP 0x0D
-struct a2mp_physlink_rsp {
- __u8 local_id;
- __u8 remote_id;
- __u8 status;
-} __packed;
-
-/* A2MP response status */
-#define A2MP_STATUS_SUCCESS 0x00
-#define A2MP_STATUS_INVALID_CTRL_ID 0x01
-#define A2MP_STATUS_UNABLE_START_LINK_CREATION 0x02
-#define A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS 0x02
-#define A2MP_STATUS_COLLISION_OCCURED 0x03
-#define A2MP_STATUS_DISCONN_REQ_RECVD 0x04
-#define A2MP_STATUS_PHYS_LINK_EXISTS 0x05
-#define A2MP_STATUS_SECURITY_VIOLATION 0x06
-
-struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr);
-
-#if IS_ENABLED(CONFIG_BT_HS)
-int amp_mgr_put(struct amp_mgr *mgr);
-struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
- struct sk_buff *skb);
-void a2mp_discover_amp(struct l2cap_chan *chan);
-#else
-static inline int amp_mgr_put(struct amp_mgr *mgr)
-{
- return 0;
-}
-
-static inline struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
- struct sk_buff *skb)
-{
- return NULL;
-}
-
-static inline void a2mp_discover_amp(struct l2cap_chan *chan)
-{
-}
-#endif
-
-void a2mp_send_getinfo_rsp(struct hci_dev *hdev);
-void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status);
-void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status);
-void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status);
-
-#endif /* __A2MP_H */
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- Copyright (c) 2011,2012 Intel Corp.
-
-*/
-
-#include <net/bluetooth/bluetooth.h>
-#include <net/bluetooth/hci.h>
-#include <net/bluetooth/hci_core.h>
-#include <crypto/hash.h>
-
-#include "hci_request.h"
-#include "a2mp.h"
-#include "amp.h"
-
-/* Remote AMP Controllers interface */
-void amp_ctrl_get(struct amp_ctrl *ctrl)
-{
- BT_DBG("ctrl %p orig refcnt %d", ctrl,
- kref_read(&ctrl->kref));
-
- kref_get(&ctrl->kref);
-}
-
-static void amp_ctrl_destroy(struct kref *kref)
-{
- struct amp_ctrl *ctrl = container_of(kref, struct amp_ctrl, kref);
-
- BT_DBG("ctrl %p", ctrl);
-
- kfree(ctrl->assoc);
- kfree(ctrl);
-}
-
-int amp_ctrl_put(struct amp_ctrl *ctrl)
-{
- BT_DBG("ctrl %p orig refcnt %d", ctrl,
- kref_read(&ctrl->kref));
-
- return kref_put(&ctrl->kref, &_ctrl_destroy);
-}
-
-struct amp_ctrl *amp_ctrl_add(struct amp_mgr *mgr, u8 id)
-{
- struct amp_ctrl *ctrl;
-
- ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
- if (!ctrl)
- return NULL;
-
- kref_init(&ctrl->kref);
- ctrl->id = id;
-
- mutex_lock(&mgr->amp_ctrls_lock);
- list_add(&ctrl->list, &mgr->amp_ctrls);
- mutex_unlock(&mgr->amp_ctrls_lock);
-
- BT_DBG("mgr %p ctrl %p", mgr, ctrl);
-
- return ctrl;
-}
-
-void amp_ctrl_list_flush(struct amp_mgr *mgr)
-{
- struct amp_ctrl *ctrl, *n;
-
- BT_DBG("mgr %p", mgr);
-
- mutex_lock(&mgr->amp_ctrls_lock);
- list_for_each_entry_safe(ctrl, n, &mgr->amp_ctrls, list) {
- list_del(&ctrl->list);
- amp_ctrl_put(ctrl);
- }
- mutex_unlock(&mgr->amp_ctrls_lock);
-}
-
-struct amp_ctrl *amp_ctrl_lookup(struct amp_mgr *mgr, u8 id)
-{
- struct amp_ctrl *ctrl;
-
- BT_DBG("mgr %p id %u", mgr, id);
-
- mutex_lock(&mgr->amp_ctrls_lock);
- list_for_each_entry(ctrl, &mgr->amp_ctrls, list) {
- if (ctrl->id == id) {
- amp_ctrl_get(ctrl);
- mutex_unlock(&mgr->amp_ctrls_lock);
- return ctrl;
- }
- }
- mutex_unlock(&mgr->amp_ctrls_lock);
-
- return NULL;
-}
-
-/* Physical Link interface */
-static u8 __next_handle(struct amp_mgr *mgr)
-{
- if (++mgr->handle == 0)
- mgr->handle = 1;
-
- return mgr->handle;
-}
-
-struct hci_conn *phylink_add(struct hci_dev *hdev, struct amp_mgr *mgr,
- u8 remote_id, bool out)
-{
- bdaddr_t *dst = &mgr->l2cap_conn->hcon->dst;
- struct hci_conn *hcon;
- u8 role = out ? HCI_ROLE_MASTER : HCI_ROLE_SLAVE;
-
- hcon = hci_conn_add(hdev, AMP_LINK, dst, role, __next_handle(mgr));
- if (!hcon)
- return NULL;
-
- BT_DBG("hcon %p dst %pMR", hcon, dst);
-
- hcon->state = BT_CONNECT;
- hcon->attempt++;
- hcon->remote_id = remote_id;
- hcon->amp_mgr = amp_mgr_get(mgr);
-
- return hcon;
-}
-
-/* AMP crypto key generation interface */
-static int hmac_sha256(u8 *key, u8 ksize, char *plaintext, u8 psize, u8 *output)
-{
- struct crypto_shash *tfm;
- struct shash_desc *shash;
- int ret;
-
- if (!ksize)
- return -EINVAL;
-
- tfm = crypto_alloc_shash("hmac(sha256)", 0, 0);
- if (IS_ERR(tfm)) {
- BT_DBG("crypto_alloc_ahash failed: err %ld", PTR_ERR(tfm));
- return PTR_ERR(tfm);
- }
-
- ret = crypto_shash_setkey(tfm, key, ksize);
- if (ret) {
- BT_DBG("crypto_ahash_setkey failed: err %d", ret);
- goto failed;
- }
-
- shash = kzalloc(sizeof(*shash) + crypto_shash_descsize(tfm),
- GFP_KERNEL);
- if (!shash) {
- ret = -ENOMEM;
- goto failed;
- }
-
- shash->tfm = tfm;
-
- ret = crypto_shash_digest(shash, plaintext, psize, output);
-
- kfree(shash);
-
-failed:
- crypto_free_shash(tfm);
- return ret;
-}
-
-int phylink_gen_key(struct hci_conn *conn, u8 *data, u8 *len, u8 *type)
-{
- struct hci_dev *hdev = conn->hdev;
- struct link_key *key;
- u8 keybuf[HCI_AMP_LINK_KEY_SIZE];
- u8 gamp_key[HCI_AMP_LINK_KEY_SIZE];
- int err;
-
- if (!hci_conn_check_link_mode(conn))
- return -EACCES;
-
- BT_DBG("conn %p key_type %d", conn, conn->key_type);
-
- /* Legacy key */
- if (conn->key_type < 3) {
- bt_dev_err(hdev, "legacy key type %u", conn->key_type);
- return -EACCES;
- }
-
- *type = conn->key_type;
- *len = HCI_AMP_LINK_KEY_SIZE;
-
- key = hci_find_link_key(hdev, &conn->dst);
- if (!key) {
- BT_DBG("No Link key for conn %p dst %pMR", conn, &conn->dst);
- return -EACCES;
- }
-
- /* BR/EDR Link Key concatenated together with itself */
- memcpy(&keybuf[0], key->val, HCI_LINK_KEY_SIZE);
- memcpy(&keybuf[HCI_LINK_KEY_SIZE], key->val, HCI_LINK_KEY_SIZE);
-
- /* Derive Generic AMP Link Key (gamp) */
- err = hmac_sha256(keybuf, HCI_AMP_LINK_KEY_SIZE, "gamp", 4, gamp_key);
- if (err) {
- bt_dev_err(hdev, "could not derive Generic AMP Key: err %d", err);
- return err;
- }
-
- if (conn->key_type == HCI_LK_DEBUG_COMBINATION) {
- BT_DBG("Use Generic AMP Key (gamp)");
- memcpy(data, gamp_key, HCI_AMP_LINK_KEY_SIZE);
- return err;
- }
-
- /* Derive Dedicated AMP Link Key: "802b" is 802.11 PAL keyID */
- return hmac_sha256(gamp_key, HCI_AMP_LINK_KEY_SIZE, "802b", 4, data);
-}
-
-static void read_local_amp_assoc_complete(struct hci_dev *hdev, u8 status,
- u16 opcode, struct sk_buff *skb)
-{
- struct hci_rp_read_local_amp_assoc *rp = (void *)skb->data;
- struct amp_assoc *assoc = &hdev->loc_assoc;
- size_t rem_len, frag_len;
-
- BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
-
- if (rp->status)
- goto send_rsp;
-
- frag_len = skb->len - sizeof(*rp);
- rem_len = __le16_to_cpu(rp->rem_len);
-
- if (rem_len > frag_len) {
- BT_DBG("frag_len %zu rem_len %zu", frag_len, rem_len);
-
- memcpy(assoc->data + assoc->offset, rp->frag, frag_len);
- assoc->offset += frag_len;
-
- /* Read other fragments */
- amp_read_loc_assoc_frag(hdev, rp->phy_handle);
-
- return;
- }
-
- memcpy(assoc->data + assoc->offset, rp->frag, rem_len);
- assoc->len = assoc->offset + rem_len;
- assoc->offset = 0;
-
-send_rsp:
- /* Send A2MP Rsp when all fragments are received */
- a2mp_send_getampassoc_rsp(hdev, rp->status);
- a2mp_send_create_phy_link_req(hdev, rp->status);
-}
-
-void amp_read_loc_assoc_frag(struct hci_dev *hdev, u8 phy_handle)
-{
- struct hci_cp_read_local_amp_assoc cp;
- struct amp_assoc *loc_assoc = &hdev->loc_assoc;
- struct hci_request req;
- int err;
-
- BT_DBG("%s handle %u", hdev->name, phy_handle);
-
- cp.phy_handle = phy_handle;
- cp.max_len = cpu_to_le16(hdev->amp_assoc_size);
- cp.len_so_far = cpu_to_le16(loc_assoc->offset);
-
- hci_req_init(&req, hdev);
- hci_req_add(&req, HCI_OP_READ_LOCAL_AMP_ASSOC, sizeof(cp), &cp);
- err = hci_req_run_skb(&req, read_local_amp_assoc_complete);
- if (err < 0)
- a2mp_send_getampassoc_rsp(hdev, A2MP_STATUS_INVALID_CTRL_ID);
-}
-
-void amp_read_loc_assoc(struct hci_dev *hdev, struct amp_mgr *mgr)
-{
- struct hci_cp_read_local_amp_assoc cp;
- struct hci_request req;
- int err;
-
- memset(&hdev->loc_assoc, 0, sizeof(struct amp_assoc));
- memset(&cp, 0, sizeof(cp));
-
- cp.max_len = cpu_to_le16(hdev->amp_assoc_size);
-
- set_bit(READ_LOC_AMP_ASSOC, &mgr->state);
- hci_req_init(&req, hdev);
- hci_req_add(&req, HCI_OP_READ_LOCAL_AMP_ASSOC, sizeof(cp), &cp);
- err = hci_req_run_skb(&req, read_local_amp_assoc_complete);
- if (err < 0)
- a2mp_send_getampassoc_rsp(hdev, A2MP_STATUS_INVALID_CTRL_ID);
-}
-
-void amp_read_loc_assoc_final_data(struct hci_dev *hdev,
- struct hci_conn *hcon)
-{
- struct hci_cp_read_local_amp_assoc cp;
- struct amp_mgr *mgr = hcon->amp_mgr;
- struct hci_request req;
- int err;
-
- if (!mgr)
- return;
-
- cp.phy_handle = hcon->handle;
- cp.len_so_far = cpu_to_le16(0);
- cp.max_len = cpu_to_le16(hdev->amp_assoc_size);
-
- set_bit(READ_LOC_AMP_ASSOC_FINAL, &mgr->state);
-
- /* Read Local AMP Assoc final link information data */
- hci_req_init(&req, hdev);
- hci_req_add(&req, HCI_OP_READ_LOCAL_AMP_ASSOC, sizeof(cp), &cp);
- err = hci_req_run_skb(&req, read_local_amp_assoc_complete);
- if (err < 0)
- a2mp_send_getampassoc_rsp(hdev, A2MP_STATUS_INVALID_CTRL_ID);
-}
-
-static void write_remote_amp_assoc_complete(struct hci_dev *hdev, u8 status,
- u16 opcode, struct sk_buff *skb)
-{
- struct hci_rp_write_remote_amp_assoc *rp = (void *)skb->data;
-
- BT_DBG("%s status 0x%2.2x phy_handle 0x%2.2x",
- hdev->name, rp->status, rp->phy_handle);
-
- if (rp->status)
- return;
-
- amp_write_rem_assoc_continue(hdev, rp->phy_handle);
-}
-
-/* Write AMP Assoc data fragments, returns true with last fragment written*/
-static bool amp_write_rem_assoc_frag(struct hci_dev *hdev,
- struct hci_conn *hcon)
-{
- struct hci_cp_write_remote_amp_assoc *cp;
- struct amp_mgr *mgr = hcon->amp_mgr;
- struct amp_ctrl *ctrl;
- struct hci_request req;
- u16 frag_len, len;
-
- ctrl = amp_ctrl_lookup(mgr, hcon->remote_id);
- if (!ctrl)
- return false;
-
- if (!ctrl->assoc_rem_len) {
- BT_DBG("all fragments are written");
- ctrl->assoc_rem_len = ctrl->assoc_len;
- ctrl->assoc_len_so_far = 0;
-
- amp_ctrl_put(ctrl);
- return true;
- }
-
- frag_len = min_t(u16, 248, ctrl->assoc_rem_len);
- len = frag_len + sizeof(*cp);
-
- cp = kzalloc(len, GFP_KERNEL);
- if (!cp) {
- amp_ctrl_put(ctrl);
- return false;
- }
-
- BT_DBG("hcon %p ctrl %p frag_len %u assoc_len %u rem_len %u",
- hcon, ctrl, frag_len, ctrl->assoc_len, ctrl->assoc_rem_len);
-
- cp->phy_handle = hcon->handle;
- cp->len_so_far = cpu_to_le16(ctrl->assoc_len_so_far);
- cp->rem_len = cpu_to_le16(ctrl->assoc_rem_len);
- memcpy(cp->frag, ctrl->assoc, frag_len);
-
- ctrl->assoc_len_so_far += frag_len;
- ctrl->assoc_rem_len -= frag_len;
-
- amp_ctrl_put(ctrl);
-
- hci_req_init(&req, hdev);
- hci_req_add(&req, HCI_OP_WRITE_REMOTE_AMP_ASSOC, len, cp);
- hci_req_run_skb(&req, write_remote_amp_assoc_complete);
-
- kfree(cp);
-
- return false;
-}
-
-void amp_write_rem_assoc_continue(struct hci_dev *hdev, u8 handle)
-{
- struct hci_conn *hcon;
-
- BT_DBG("%s phy handle 0x%2.2x", hdev->name, handle);
-
- hcon = hci_conn_hash_lookup_handle(hdev, handle);
- if (!hcon)
- return;
-
- /* Send A2MP create phylink rsp when all fragments are written */
- if (amp_write_rem_assoc_frag(hdev, hcon))
- a2mp_send_create_phy_link_rsp(hdev, 0);
-}
-
-void amp_write_remote_assoc(struct hci_dev *hdev, u8 handle)
-{
- struct hci_conn *hcon;
-
- BT_DBG("%s phy handle 0x%2.2x", hdev->name, handle);
-
- hcon = hci_conn_hash_lookup_handle(hdev, handle);
- if (!hcon)
- return;
-
- BT_DBG("%s phy handle 0x%2.2x hcon %p", hdev->name, handle, hcon);
-
- amp_write_rem_assoc_frag(hdev, hcon);
-}
-
-static void create_phylink_complete(struct hci_dev *hdev, u8 status,
- u16 opcode)
-{
- struct hci_cp_create_phy_link *cp;
-
- BT_DBG("%s status 0x%2.2x", hdev->name, status);
-
- cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_PHY_LINK);
- if (!cp)
- return;
-
- hci_dev_lock(hdev);
-
- if (status) {
- struct hci_conn *hcon;
-
- hcon = hci_conn_hash_lookup_handle(hdev, cp->phy_handle);
- if (hcon)
- hci_conn_del(hcon);
- } else {
- amp_write_remote_assoc(hdev, cp->phy_handle);
- }
-
- hci_dev_unlock(hdev);
-}
-
-void amp_create_phylink(struct hci_dev *hdev, struct amp_mgr *mgr,
- struct hci_conn *hcon)
-{
- struct hci_cp_create_phy_link cp;
- struct hci_request req;
-
- cp.phy_handle = hcon->handle;
-
- BT_DBG("%s hcon %p phy handle 0x%2.2x", hdev->name, hcon,
- hcon->handle);
-
- if (phylink_gen_key(mgr->l2cap_conn->hcon, cp.key, &cp.key_len,
- &cp.key_type)) {
- BT_DBG("Cannot create link key");
- return;
- }
-
- hci_req_init(&req, hdev);
- hci_req_add(&req, HCI_OP_CREATE_PHY_LINK, sizeof(cp), &cp);
- hci_req_run(&req, create_phylink_complete);
-}
-
-static void accept_phylink_complete(struct hci_dev *hdev, u8 status,
- u16 opcode)
-{
- struct hci_cp_accept_phy_link *cp;
-
- BT_DBG("%s status 0x%2.2x", hdev->name, status);
-
- if (status)
- return;
-
- cp = hci_sent_cmd_data(hdev, HCI_OP_ACCEPT_PHY_LINK);
- if (!cp)
- return;
-
- amp_write_remote_assoc(hdev, cp->phy_handle);
-}
-
-void amp_accept_phylink(struct hci_dev *hdev, struct amp_mgr *mgr,
- struct hci_conn *hcon)
-{
- struct hci_cp_accept_phy_link cp;
- struct hci_request req;
-
- cp.phy_handle = hcon->handle;
-
- BT_DBG("%s hcon %p phy handle 0x%2.2x", hdev->name, hcon,
- hcon->handle);
-
- if (phylink_gen_key(mgr->l2cap_conn->hcon, cp.key, &cp.key_len,
- &cp.key_type)) {
- BT_DBG("Cannot create link key");
- return;
- }
-
- hci_req_init(&req, hdev);
- hci_req_add(&req, HCI_OP_ACCEPT_PHY_LINK, sizeof(cp), &cp);
- hci_req_run(&req, accept_phylink_complete);
-}
-
-void amp_physical_cfm(struct hci_conn *bredr_hcon, struct hci_conn *hs_hcon)
-{
- struct hci_dev *bredr_hdev = hci_dev_hold(bredr_hcon->hdev);
- struct amp_mgr *mgr = hs_hcon->amp_mgr;
- struct l2cap_chan *bredr_chan;
-
- BT_DBG("bredr_hcon %p hs_hcon %p mgr %p", bredr_hcon, hs_hcon, mgr);
-
- if (!bredr_hdev || !mgr || !mgr->bredr_chan)
- return;
-
- bredr_chan = mgr->bredr_chan;
-
- l2cap_chan_lock(bredr_chan);
-
- set_bit(FLAG_EFS_ENABLE, &bredr_chan->flags);
- bredr_chan->remote_amp_id = hs_hcon->remote_id;
- bredr_chan->local_amp_id = hs_hcon->hdev->id;
- bredr_chan->hs_hcon = hs_hcon;
- bredr_chan->conn->mtu = hs_hcon->hdev->block_mtu;
-
- __l2cap_physical_cfm(bredr_chan, 0);
-
- l2cap_chan_unlock(bredr_chan);
-
- hci_dev_put(bredr_hdev);
-}
-
-void amp_create_logical_link(struct l2cap_chan *chan)
-{
- struct hci_conn *hs_hcon = chan->hs_hcon;
- struct hci_cp_create_accept_logical_link cp;
- struct hci_dev *hdev;
-
- BT_DBG("chan %p hs_hcon %p dst %pMR", chan, hs_hcon,
- &chan->conn->hcon->dst);
-
- if (!hs_hcon)
- return;
-
- hdev = hci_dev_hold(chan->hs_hcon->hdev);
- if (!hdev)
- return;
-
- cp.phy_handle = hs_hcon->handle;
-
- cp.tx_flow_spec.id = chan->local_id;
- cp.tx_flow_spec.stype = chan->local_stype;
- cp.tx_flow_spec.msdu = cpu_to_le16(chan->local_msdu);
- cp.tx_flow_spec.sdu_itime = cpu_to_le32(chan->local_sdu_itime);
- cp.tx_flow_spec.acc_lat = cpu_to_le32(chan->local_acc_lat);
- cp.tx_flow_spec.flush_to = cpu_to_le32(chan->local_flush_to);
-
- cp.rx_flow_spec.id = chan->remote_id;
- cp.rx_flow_spec.stype = chan->remote_stype;
- cp.rx_flow_spec.msdu = cpu_to_le16(chan->remote_msdu);
- cp.rx_flow_spec.sdu_itime = cpu_to_le32(chan->remote_sdu_itime);
- cp.rx_flow_spec.acc_lat = cpu_to_le32(chan->remote_acc_lat);
- cp.rx_flow_spec.flush_to = cpu_to_le32(chan->remote_flush_to);
-
- if (hs_hcon->out)
- hci_send_cmd(hdev, HCI_OP_CREATE_LOGICAL_LINK, sizeof(cp),
- &cp);
- else
- hci_send_cmd(hdev, HCI_OP_ACCEPT_LOGICAL_LINK, sizeof(cp),
- &cp);
-
- hci_dev_put(hdev);
-}
-
-void amp_disconnect_logical_link(struct hci_chan *hchan)
-{
- struct hci_conn *hcon = hchan->conn;
- struct hci_cp_disconn_logical_link cp;
-
- if (hcon->state != BT_CONNECTED) {
- BT_DBG("hchan %p not connected", hchan);
- return;
- }
-
- cp.log_handle = cpu_to_le16(hchan->handle);
- hci_send_cmd(hcon->hdev, HCI_OP_DISCONN_LOGICAL_LINK, sizeof(cp), &cp);
-}
-
-void amp_destroy_logical_link(struct hci_chan *hchan, u8 reason)
-{
- BT_DBG("hchan %p", hchan);
-
- hci_chan_del(hchan);
-}
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- Copyright (c) 2011,2012 Intel Corp.
-
-*/
-
-#ifndef __AMP_H
-#define __AMP_H
-
-struct amp_ctrl {
- struct list_head list;
- struct kref kref;
- __u8 id;
- __u16 assoc_len_so_far;
- __u16 assoc_rem_len;
- __u16 assoc_len;
- __u8 *assoc;
-};
-
-int amp_ctrl_put(struct amp_ctrl *ctrl);
-void amp_ctrl_get(struct amp_ctrl *ctrl);
-struct amp_ctrl *amp_ctrl_add(struct amp_mgr *mgr, u8 id);
-struct amp_ctrl *amp_ctrl_lookup(struct amp_mgr *mgr, u8 id);
-void amp_ctrl_list_flush(struct amp_mgr *mgr);
-
-struct hci_conn *phylink_add(struct hci_dev *hdev, struct amp_mgr *mgr,
- u8 remote_id, bool out);
-
-int phylink_gen_key(struct hci_conn *hcon, u8 *data, u8 *len, u8 *type);
-
-void amp_read_loc_assoc_frag(struct hci_dev *hdev, u8 phy_handle);
-void amp_read_loc_assoc(struct hci_dev *hdev, struct amp_mgr *mgr);
-void amp_read_loc_assoc_final_data(struct hci_dev *hdev,
- struct hci_conn *hcon);
-void amp_create_phylink(struct hci_dev *hdev, struct amp_mgr *mgr,
- struct hci_conn *hcon);
-void amp_accept_phylink(struct hci_dev *hdev, struct amp_mgr *mgr,
- struct hci_conn *hcon);
-
-#if IS_ENABLED(CONFIG_BT_HS)
-void amp_create_logical_link(struct l2cap_chan *chan);
-void amp_disconnect_logical_link(struct hci_chan *hchan);
-#else
-static inline void amp_create_logical_link(struct l2cap_chan *chan)
-{
-}
-
-static inline void amp_disconnect_logical_link(struct hci_chan *hchan)
-{
-}
-#endif
-
-void amp_write_remote_assoc(struct hci_dev *hdev, u8 handle);
-void amp_write_rem_assoc_continue(struct hci_dev *hdev, u8 handle);
-void amp_physical_cfm(struct hci_conn *bredr_hcon, struct hci_conn *hs_hcon);
-void amp_create_logical_link(struct l2cap_chan *chan);
-void amp_disconnect_logical_link(struct hci_chan *hchan);
-void amp_destroy_logical_link(struct hci_chan *hchan, u8 reason);
-
-#endif /* __AMP_H */
#include "hci_request.h"
#include "smp.h"
-#include "a2mp.h"
#include "eir.h"
struct sco_param {
}
}
- if (conn->amp_mgr)
- amp_mgr_put(conn->amp_mgr);
-
skb_queue_purge(&conn->data_q);
/* Remove the connection from the list and cleanup its remaining
#include "hci_request.h"
#include "hci_debugfs.h"
#include "hci_codec.h"
-#include "a2mp.h"
-#include "amp.h"
#include "smp.h"
#include "msft.h"
#include "eir.h"
#include <net/bluetooth/l2cap.h>
#include "smp.h"
-#include "a2mp.h"
-#include "amp.h"
#define LE_FLOWCTL_MAX_CREDITS 65535
return NULL;
}
-static struct l2cap_chan *l2cap_get_chan_by_ident(struct l2cap_conn *conn,
- u8 ident)
-{
- struct l2cap_chan *c;
-
- mutex_lock(&conn->chan_lock);
- c = __l2cap_get_chan_by_ident(conn, ident);
- if (c) {
- /* Only lock if chan reference is not 0 */
- c = l2cap_chan_hold_unless_zero(c);
- if (c)
- l2cap_chan_lock(c);
- }
- mutex_unlock(&conn->chan_lock);
-
- return c;
-}
-
static struct l2cap_chan *__l2cap_global_chan_by_addr(__le16 psm, bdaddr_t *src,
u8 src_type)
{
chan->ops->teardown(chan, err);
if (conn) {
- struct amp_mgr *mgr = conn->hcon->amp_mgr;
/* Delete from channel list */
list_del(&chan->list);
if (chan->chan_type != L2CAP_CHAN_FIXED ||
test_bit(FLAG_HOLD_HCI_CONN, &chan->flags))
hci_conn_drop(conn->hcon);
-
- if (mgr && mgr->bredr_chan == chan)
- mgr->bredr_chan = NULL;
- }
-
- if (chan->hs_hchan) {
- struct hci_chan *hs_hchan = chan->hs_hchan;
-
- BT_DBG("chan %p disconnect hs_hchan %p", chan, hs_hchan);
- amp_disconnect_logical_link(hs_hchan);
}
if (test_bit(CONF_NOT_COMPLETE, &chan->conf_state))
hci_send_acl(conn->hchan, skb, flags);
}
-static bool __chan_is_moving(struct l2cap_chan *chan)
-{
- return chan->move_state != L2CAP_MOVE_STABLE &&
- chan->move_state != L2CAP_MOVE_WAIT_PREPARE;
-}
-
static void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)
{
struct hci_conn *hcon = chan->conn->hcon;
BT_DBG("chan %p, skb %p len %d priority %u", chan, skb, skb->len,
skb->priority);
- if (chan->hs_hcon && !__chan_is_moving(chan)) {
- if (chan->hs_hchan)
- hci_send_acl(chan->hs_hchan, skb, ACL_COMPLETE);
- else
- kfree_skb(skb);
-
- return;
- }
-
/* Use NO_FLUSH for LE links (where this is the only option) or
* if the BR/EDR link supports it and flushing has not been
* explicitly requested (through FLAG_FLUSHABLE).
if (!control->sframe)
return;
- if (__chan_is_moving(chan))
- return;
-
if (test_and_clear_bit(CONN_SEND_FBIT, &chan->conn_state) &&
!control->poll)
control->final = 1;
return !test_bit(CONF_CONNECT_PEND, &chan->conf_state);
}
-static bool __amp_capable(struct l2cap_chan *chan)
-{
- struct l2cap_conn *conn = chan->conn;
- struct hci_dev *hdev;
- bool amp_available = false;
-
- if (!(conn->local_fixed_chan & L2CAP_FC_A2MP))
- return false;
-
- if (!(conn->remote_fixed_chan & L2CAP_FC_A2MP))
- return false;
-
- read_lock(&hci_dev_list_lock);
- list_for_each_entry(hdev, &hci_dev_list, list) {
- if (hdev->amp_type != AMP_TYPE_BREDR &&
- test_bit(HCI_UP, &hdev->flags)) {
- amp_available = true;
- break;
- }
- }
- read_unlock(&hci_dev_list_lock);
-
- if (chan->chan_policy == BT_CHANNEL_POLICY_AMP_PREFERRED)
- return amp_available;
-
- return false;
-}
-
-static bool l2cap_check_efs(struct l2cap_chan *chan)
-{
- /* Check EFS parameters */
- return true;
-}
-
void l2cap_send_conn_req(struct l2cap_chan *chan)
{
struct l2cap_conn *conn = chan->conn;
l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_REQ, sizeof(req), &req);
}
-static void l2cap_send_create_chan_req(struct l2cap_chan *chan, u8 amp_id)
-{
- struct l2cap_create_chan_req req;
- req.scid = cpu_to_le16(chan->scid);
- req.psm = chan->psm;
- req.amp_id = amp_id;
-
- chan->ident = l2cap_get_ident(chan->conn);
-
- l2cap_send_cmd(chan->conn, chan->ident, L2CAP_CREATE_CHAN_REQ,
- sizeof(req), &req);
-}
-
-static void l2cap_move_setup(struct l2cap_chan *chan)
-{
- struct sk_buff *skb;
-
- BT_DBG("chan %p", chan);
-
- if (chan->mode != L2CAP_MODE_ERTM)
- return;
-
- __clear_retrans_timer(chan);
- __clear_monitor_timer(chan);
- __clear_ack_timer(chan);
-
- chan->retry_count = 0;
- skb_queue_walk(&chan->tx_q, skb) {
- if (bt_cb(skb)->l2cap.retries)
- bt_cb(skb)->l2cap.retries = 1;
- else
- break;
- }
-
- chan->expected_tx_seq = chan->buffer_seq;
-
- clear_bit(CONN_REJ_ACT, &chan->conn_state);
- clear_bit(CONN_SREJ_ACT, &chan->conn_state);
- l2cap_seq_list_clear(&chan->retrans_list);
- l2cap_seq_list_clear(&chan->srej_list);
- skb_queue_purge(&chan->srej_q);
-
- chan->tx_state = L2CAP_TX_STATE_XMIT;
- chan->rx_state = L2CAP_RX_STATE_MOVE;
-
- set_bit(CONN_REMOTE_BUSY, &chan->conn_state);
-}
-
-static void l2cap_move_done(struct l2cap_chan *chan)
-{
- u8 move_role = chan->move_role;
- BT_DBG("chan %p", chan);
-
- chan->move_state = L2CAP_MOVE_STABLE;
- chan->move_role = L2CAP_MOVE_ROLE_NONE;
-
- if (chan->mode != L2CAP_MODE_ERTM)
- return;
-
- switch (move_role) {
- case L2CAP_MOVE_ROLE_INITIATOR:
- l2cap_tx(chan, NULL, NULL, L2CAP_EV_EXPLICIT_POLL);
- chan->rx_state = L2CAP_RX_STATE_WAIT_F;
- break;
- case L2CAP_MOVE_ROLE_RESPONDER:
- chan->rx_state = L2CAP_RX_STATE_WAIT_P;
- break;
- }
-}
-
static void l2cap_chan_ready(struct l2cap_chan *chan)
{
/* The channel may have already been flagged as connected in
static void l2cap_start_connection(struct l2cap_chan *chan)
{
- if (__amp_capable(chan)) {
- BT_DBG("chan %p AMP capable: discover AMPs", chan);
- a2mp_discover_amp(chan);
- } else if (chan->conn->hcon->type == LE_LINK) {
+ if (chan->conn->hcon->type == LE_LINK) {
l2cap_le_start(chan);
} else {
l2cap_send_conn_req(chan);
__clear_ack_timer(chan);
}
- if (chan->scid == L2CAP_CID_A2MP) {
- l2cap_state_change(chan, BT_DISCONN);
- return;
- }
-
req.dcid = cpu_to_le16(chan->dcid);
req.scid = cpu_to_le16(chan->scid);
l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_DISCONN_REQ,
l2cap_chan_lock(chan);
- if (chan->scid == L2CAP_CID_A2MP) {
- l2cap_chan_unlock(chan);
- continue;
- }
-
if (hcon->type == LE_LINK) {
l2cap_le_start(chan);
} else if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED) {
BT_DBG("chan %p, skbs %p", chan, skbs);
- if (__chan_is_moving(chan))
- return;
-
skb_queue_splice_tail_init(skbs, &chan->tx_q);
while (!skb_queue_empty(&chan->tx_q)) {
if (test_bit(CONN_REMOTE_BUSY, &chan->conn_state))
return 0;
- if (__chan_is_moving(chan))
- return 0;
-
while (chan->tx_send_head &&
chan->unacked_frames < chan->remote_tx_win &&
chan->tx_state == L2CAP_TX_STATE_XMIT) {
if (test_bit(CONN_REMOTE_BUSY, &chan->conn_state))
return;
- if (__chan_is_moving(chan))
- return;
-
while (chan->retrans_list.head != L2CAP_SEQ_LIST_CLEAR) {
seq = l2cap_seq_list_pop(&chan->retrans_list);
pdu_len = chan->conn->mtu;
/* Constrain PDU size for BR/EDR connections */
- if (!chan->hs_hcon)
- pdu_len = min_t(size_t, pdu_len, L2CAP_BREDR_MAX_PAYLOAD);
+ pdu_len = min_t(size_t, pdu_len, L2CAP_BREDR_MAX_PAYLOAD);
/* Adjust for largest possible L2CAP overhead. */
if (chan->fcs)
skb_queue_head_init(&chan->tx_q);
- chan->local_amp_id = AMP_ID_BREDR;
- chan->move_id = AMP_ID_BREDR;
- chan->move_state = L2CAP_MOVE_STABLE;
- chan->move_role = L2CAP_MOVE_ROLE_NONE;
-
if (chan->mode != L2CAP_MODE_ERTM)
return 0;
static inline bool __l2cap_ews_supported(struct l2cap_conn *conn)
{
- return ((conn->local_fixed_chan & L2CAP_FC_A2MP) &&
- (conn->feat_mask & L2CAP_FEAT_EXT_WINDOW));
+ return (conn->feat_mask & L2CAP_FEAT_EXT_WINDOW);
}
static inline bool __l2cap_efs_supported(struct l2cap_conn *conn)
{
- return ((conn->local_fixed_chan & L2CAP_FC_A2MP) &&
- (conn->feat_mask & L2CAP_FEAT_EXT_FLOW));
+ return (conn->feat_mask & L2CAP_FEAT_EXT_FLOW);
}
static void __l2cap_set_ertm_timeouts(struct l2cap_chan *chan,
struct l2cap_conf_rfc *rfc)
{
- if (chan->local_amp_id != AMP_ID_BREDR && chan->hs_hcon) {
- u64 ertm_to = chan->hs_hcon->hdev->amp_be_flush_to;
-
- /* Class 1 devices have must have ERTM timeouts
- * exceeding the Link Supervision Timeout. The
- * default Link Supervision Timeout for AMP
- * controllers is 10 seconds.
- *
- * Class 1 devices use 0xffffffff for their
- * best-effort flush timeout, so the clamping logic
- * will result in a timeout that meets the above
- * requirement. ERTM timeouts are 16-bit values, so
- * the maximum timeout is 65.535 seconds.
- */
-
- /* Convert timeout to milliseconds and round */
- ertm_to = DIV_ROUND_UP_ULL(ertm_to, 1000);
-
- /* This is the recommended formula for class 2 devices
- * that start ERTM timers when packets are sent to the
- * controller.
- */
- ertm_to = 3 * ertm_to + 500;
-
- if (ertm_to > 0xffff)
- ertm_to = 0xffff;
-
- rfc->retrans_timeout = cpu_to_le16((u16) ertm_to);
- rfc->monitor_timeout = rfc->retrans_timeout;
- } else {
- rfc->retrans_timeout = cpu_to_le16(L2CAP_DEFAULT_RETRANS_TO);
- rfc->monitor_timeout = cpu_to_le16(L2CAP_DEFAULT_MONITOR_TO);
- }
+ rfc->retrans_timeout = cpu_to_le16(L2CAP_DEFAULT_RETRANS_TO);
+ rfc->monitor_timeout = cpu_to_le16(L2CAP_DEFAULT_MONITOR_TO);
}
static inline void l2cap_txwin_setup(struct l2cap_chan *chan)
case L2CAP_CONF_EWS:
if (olen != 2)
break;
- if (!(chan->conn->local_fixed_chan & L2CAP_FC_A2MP))
- return -ECONNREFUSED;
- set_bit(FLAG_EXT_CTRL, &chan->flags);
- set_bit(CONF_EWS_RECV, &chan->conf_state);
- chan->tx_win_max = L2CAP_DEFAULT_EXT_WINDOW;
- chan->remote_tx_win = val;
- break;
+ return -ECONNREFUSED;
default:
if (hint)
rsp.dcid = cpu_to_le16(chan->scid);
rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS);
rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
-
- if (chan->hs_hcon)
- rsp_code = L2CAP_CREATE_CHAN_RSP;
- else
- rsp_code = L2CAP_CONN_RSP;
+ rsp_code = L2CAP_CONN_RSP;
BT_DBG("chan %p rsp_code %u", chan, rsp_code);
chan->dst_type = bdaddr_dst_type(conn->hcon);
chan->psm = psm;
chan->dcid = scid;
- chan->local_amp_id = amp_id;
__l2cap_chan_add(conn, chan);
/* check compatibility */
/* Send rsp for BR/EDR channel */
- if (!chan->hs_hcon)
- l2cap_send_efs_conf_rsp(chan, rsp, cmd->ident, flags);
- else
- chan->ident = cmd->ident;
+ l2cap_send_efs_conf_rsp(chan, rsp, cmd->ident, flags);
}
unlock:
goto done;
}
- if (!chan->hs_hcon) {
- l2cap_send_efs_conf_rsp(chan, buf, cmd->ident,
- 0);
- } else {
- if (l2cap_check_efs(chan)) {
- amp_create_logical_link(chan);
- chan->ident = cmd->ident;
- }
- }
+ l2cap_send_efs_conf_rsp(chan, buf, cmd->ident, 0);
}
goto done;
if (!disable_ertm)
feat_mask |= L2CAP_FEAT_ERTM | L2CAP_FEAT_STREAMING
| L2CAP_FEAT_FCS;
- if (conn->local_fixed_chan & L2CAP_FC_A2MP)
- feat_mask |= L2CAP_FEAT_EXT_FLOW
- | L2CAP_FEAT_EXT_WINDOW;
put_unaligned_le32(feat_mask, rsp->data);
l2cap_send_cmd(conn, cmd->ident, L2CAP_INFO_RSP, sizeof(buf),
return 0;
}
-static int l2cap_create_channel_req(struct l2cap_conn *conn,
- struct l2cap_cmd_hdr *cmd,
- u16 cmd_len, void *data)
-{
- struct l2cap_create_chan_req *req = data;
- struct l2cap_create_chan_rsp rsp;
- struct l2cap_chan *chan;
- struct hci_dev *hdev;
- u16 psm, scid;
-
- if (cmd_len != sizeof(*req))
- return -EPROTO;
-
- if (!(conn->local_fixed_chan & L2CAP_FC_A2MP))
- return -EINVAL;
-
- psm = le16_to_cpu(req->psm);
- scid = le16_to_cpu(req->scid);
-
- BT_DBG("psm 0x%2.2x, scid 0x%4.4x, amp_id %d", psm, scid, req->amp_id);
-
- /* For controller id 0 make BR/EDR connection */
- if (req->amp_id == AMP_ID_BREDR) {
- l2cap_connect(conn, cmd, data, L2CAP_CREATE_CHAN_RSP,
- req->amp_id);
- return 0;
- }
-
- /* Validate AMP controller id */
- hdev = hci_dev_get(req->amp_id);
- if (!hdev)
- goto error;
-
- if (hdev->dev_type != HCI_AMP || !test_bit(HCI_UP, &hdev->flags)) {
- hci_dev_put(hdev);
- goto error;
- }
-
- chan = l2cap_connect(conn, cmd, data, L2CAP_CREATE_CHAN_RSP,
- req->amp_id);
- if (chan) {
- struct amp_mgr *mgr = conn->hcon->amp_mgr;
- struct hci_conn *hs_hcon;
-
- hs_hcon = hci_conn_hash_lookup_ba(hdev, AMP_LINK,
- &conn->hcon->dst);
- if (!hs_hcon) {
- hci_dev_put(hdev);
- cmd_reject_invalid_cid(conn, cmd->ident, chan->scid,
- chan->dcid);
- return 0;
- }
-
- BT_DBG("mgr %p bredr_chan %p hs_hcon %p", mgr, chan, hs_hcon);
-
- mgr->bredr_chan = chan;
- chan->hs_hcon = hs_hcon;
- chan->fcs = L2CAP_FCS_NONE;
- conn->mtu = hdev->block_mtu;
- }
-
- hci_dev_put(hdev);
-
- return 0;
-
-error:
- rsp.dcid = 0;
- rsp.scid = cpu_to_le16(scid);
- rsp.result = cpu_to_le16(L2CAP_CR_BAD_AMP);
- rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
-
- l2cap_send_cmd(conn, cmd->ident, L2CAP_CREATE_CHAN_RSP,
- sizeof(rsp), &rsp);
-
- return 0;
-}
-
-static void l2cap_send_move_chan_req(struct l2cap_chan *chan, u8 dest_amp_id)
-{
- struct l2cap_move_chan_req req;
- u8 ident;
-
- BT_DBG("chan %p, dest_amp_id %d", chan, dest_amp_id);
-
- ident = l2cap_get_ident(chan->conn);
- chan->ident = ident;
-
- req.icid = cpu_to_le16(chan->scid);
- req.dest_amp_id = dest_amp_id;
-
- l2cap_send_cmd(chan->conn, ident, L2CAP_MOVE_CHAN_REQ, sizeof(req),
- &req);
-
- __set_chan_timer(chan, L2CAP_MOVE_TIMEOUT);
-}
-
-static void l2cap_send_move_chan_rsp(struct l2cap_chan *chan, u16 result)
-{
- struct l2cap_move_chan_rsp rsp;
-
- BT_DBG("chan %p, result 0x%4.4x", chan, result);
-
- rsp.icid = cpu_to_le16(chan->dcid);
- rsp.result = cpu_to_le16(result);
-
- l2cap_send_cmd(chan->conn, chan->ident, L2CAP_MOVE_CHAN_RSP,
- sizeof(rsp), &rsp);
-}
-
-static void l2cap_send_move_chan_cfm(struct l2cap_chan *chan, u16 result)
-{
- struct l2cap_move_chan_cfm cfm;
-
- BT_DBG("chan %p, result 0x%4.4x", chan, result);
-
- chan->ident = l2cap_get_ident(chan->conn);
-
- cfm.icid = cpu_to_le16(chan->scid);
- cfm.result = cpu_to_le16(result);
-
- l2cap_send_cmd(chan->conn, chan->ident, L2CAP_MOVE_CHAN_CFM,
- sizeof(cfm), &cfm);
-
- __set_chan_timer(chan, L2CAP_MOVE_TIMEOUT);
-}
-
-static void l2cap_send_move_chan_cfm_icid(struct l2cap_conn *conn, u16 icid)
-{
- struct l2cap_move_chan_cfm cfm;
-
- BT_DBG("conn %p, icid 0x%4.4x", conn, icid);
-
- cfm.icid = cpu_to_le16(icid);
- cfm.result = cpu_to_le16(L2CAP_MC_UNCONFIRMED);
-
- l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_MOVE_CHAN_CFM,
- sizeof(cfm), &cfm);
-}
-
-static void l2cap_send_move_chan_cfm_rsp(struct l2cap_conn *conn, u8 ident,
- u16 icid)
-{
- struct l2cap_move_chan_cfm_rsp rsp;
-
- BT_DBG("icid 0x%4.4x", icid);
-
- rsp.icid = cpu_to_le16(icid);
- l2cap_send_cmd(conn, ident, L2CAP_MOVE_CHAN_CFM_RSP, sizeof(rsp), &rsp);
-}
-
-static void __release_logical_link(struct l2cap_chan *chan)
-{
- chan->hs_hchan = NULL;
- chan->hs_hcon = NULL;
-
- /* Placeholder - release the logical link */
-}
-
-static void l2cap_logical_fail(struct l2cap_chan *chan)
-{
- /* Logical link setup failed */
- if (chan->state != BT_CONNECTED) {
- /* Create channel failure, disconnect */
- l2cap_send_disconn_req(chan, ECONNRESET);
- return;
- }
-
- switch (chan->move_role) {
- case L2CAP_MOVE_ROLE_RESPONDER:
- l2cap_move_done(chan);
- l2cap_send_move_chan_rsp(chan, L2CAP_MR_NOT_SUPP);
- break;
- case L2CAP_MOVE_ROLE_INITIATOR:
- if (chan->move_state == L2CAP_MOVE_WAIT_LOGICAL_COMP ||
- chan->move_state == L2CAP_MOVE_WAIT_LOGICAL_CFM) {
- /* Remote has only sent pending or
- * success responses, clean up
- */
- l2cap_move_done(chan);
- }
-
- /* Other amp move states imply that the move
- * has already aborted
- */
- l2cap_send_move_chan_cfm(chan, L2CAP_MC_UNCONFIRMED);
- break;
- }
-}
-
-static void l2cap_logical_finish_create(struct l2cap_chan *chan,
- struct hci_chan *hchan)
-{
- struct l2cap_conf_rsp rsp;
-
- chan->hs_hchan = hchan;
- chan->hs_hcon->l2cap_data = chan->conn;
-
- l2cap_send_efs_conf_rsp(chan, &rsp, chan->ident, 0);
-
- if (test_bit(CONF_INPUT_DONE, &chan->conf_state)) {
- int err;
-
- set_default_fcs(chan);
-
- err = l2cap_ertm_init(chan);
- if (err < 0)
- l2cap_send_disconn_req(chan, -err);
- else
- l2cap_chan_ready(chan);
- }
-}
-
-static void l2cap_logical_finish_move(struct l2cap_chan *chan,
- struct hci_chan *hchan)
-{
- chan->hs_hcon = hchan->conn;
- chan->hs_hcon->l2cap_data = chan->conn;
-
- BT_DBG("move_state %d", chan->move_state);
-
- switch (chan->move_state) {
- case L2CAP_MOVE_WAIT_LOGICAL_COMP:
- /* Move confirm will be sent after a success
- * response is received
- */
- chan->move_state = L2CAP_MOVE_WAIT_RSP_SUCCESS;
- break;
- case L2CAP_MOVE_WAIT_LOGICAL_CFM:
- if (test_bit(CONN_LOCAL_BUSY, &chan->conn_state)) {
- chan->move_state = L2CAP_MOVE_WAIT_LOCAL_BUSY;
- } else if (chan->move_role == L2CAP_MOVE_ROLE_INITIATOR) {
- chan->move_state = L2CAP_MOVE_WAIT_CONFIRM_RSP;
- l2cap_send_move_chan_cfm(chan, L2CAP_MC_CONFIRMED);
- } else if (chan->move_role == L2CAP_MOVE_ROLE_RESPONDER) {
- chan->move_state = L2CAP_MOVE_WAIT_CONFIRM;
- l2cap_send_move_chan_rsp(chan, L2CAP_MR_SUCCESS);
- }
- break;
- default:
- /* Move was not in expected state, free the channel */
- __release_logical_link(chan);
-
- chan->move_state = L2CAP_MOVE_STABLE;
- }
-}
-
-/* Call with chan locked */
-void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
- u8 status)
-{
- BT_DBG("chan %p, hchan %p, status %d", chan, hchan, status);
-
- if (status) {
- l2cap_logical_fail(chan);
- __release_logical_link(chan);
- return;
- }
-
- if (chan->state != BT_CONNECTED) {
- /* Ignore logical link if channel is on BR/EDR */
- if (chan->local_amp_id != AMP_ID_BREDR)
- l2cap_logical_finish_create(chan, hchan);
- } else {
- l2cap_logical_finish_move(chan, hchan);
- }
-}
-
-void l2cap_move_start(struct l2cap_chan *chan)
-{
- BT_DBG("chan %p", chan);
-
- if (chan->local_amp_id == AMP_ID_BREDR) {
- if (chan->chan_policy != BT_CHANNEL_POLICY_AMP_PREFERRED)
- return;
- chan->move_role = L2CAP_MOVE_ROLE_INITIATOR;
- chan->move_state = L2CAP_MOVE_WAIT_PREPARE;
- /* Placeholder - start physical link setup */
- } else {
- chan->move_role = L2CAP_MOVE_ROLE_INITIATOR;
- chan->move_state = L2CAP_MOVE_WAIT_RSP_SUCCESS;
- chan->move_id = 0;
- l2cap_move_setup(chan);
- l2cap_send_move_chan_req(chan, 0);
- }
-}
-
-static void l2cap_do_create(struct l2cap_chan *chan, int result,
- u8 local_amp_id, u8 remote_amp_id)
-{
- BT_DBG("chan %p state %s %u -> %u", chan, state_to_string(chan->state),
- local_amp_id, remote_amp_id);
-
- chan->fcs = L2CAP_FCS_NONE;
-
- /* Outgoing channel on AMP */
- if (chan->state == BT_CONNECT) {
- if (result == L2CAP_CR_SUCCESS) {
- chan->local_amp_id = local_amp_id;
- l2cap_send_create_chan_req(chan, remote_amp_id);
- } else {
- /* Revert to BR/EDR connect */
- l2cap_send_conn_req(chan);
- }
-
- return;
- }
-
- /* Incoming channel on AMP */
- if (__l2cap_no_conn_pending(chan)) {
- struct l2cap_conn_rsp rsp;
- char buf[128];
- rsp.scid = cpu_to_le16(chan->dcid);
- rsp.dcid = cpu_to_le16(chan->scid);
-
- if (result == L2CAP_CR_SUCCESS) {
- /* Send successful response */
- rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS);
- rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
- } else {
- /* Send negative response */
- rsp.result = cpu_to_le16(L2CAP_CR_NO_MEM);
- rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
- }
-
- l2cap_send_cmd(chan->conn, chan->ident, L2CAP_CREATE_CHAN_RSP,
- sizeof(rsp), &rsp);
-
- if (result == L2CAP_CR_SUCCESS) {
- l2cap_state_change(chan, BT_CONFIG);
- set_bit(CONF_REQ_SENT, &chan->conf_state);
- l2cap_send_cmd(chan->conn, l2cap_get_ident(chan->conn),
- L2CAP_CONF_REQ,
- l2cap_build_conf_req(chan, buf, sizeof(buf)), buf);
- chan->num_conf_req++;
- }
- }
-}
-
-static void l2cap_do_move_initiate(struct l2cap_chan *chan, u8 local_amp_id,
- u8 remote_amp_id)
-{
- l2cap_move_setup(chan);
- chan->move_id = local_amp_id;
- chan->move_state = L2CAP_MOVE_WAIT_RSP;
-
- l2cap_send_move_chan_req(chan, remote_amp_id);
-}
-
-static void l2cap_do_move_respond(struct l2cap_chan *chan, int result)
-{
- struct hci_chan *hchan = NULL;
-
- /* Placeholder - get hci_chan for logical link */
-
- if (hchan) {
- if (hchan->state == BT_CONNECTED) {
- /* Logical link is ready to go */
- chan->hs_hcon = hchan->conn;
- chan->hs_hcon->l2cap_data = chan->conn;
- chan->move_state = L2CAP_MOVE_WAIT_CONFIRM;
- l2cap_send_move_chan_rsp(chan, L2CAP_MR_SUCCESS);
-
- l2cap_logical_cfm(chan, hchan, L2CAP_MR_SUCCESS);
- } else {
- /* Wait for logical link to be ready */
- chan->move_state = L2CAP_MOVE_WAIT_LOGICAL_CFM;
- }
- } else {
- /* Logical link not available */
- l2cap_send_move_chan_rsp(chan, L2CAP_MR_NOT_ALLOWED);
- }
-}
-
-static void l2cap_do_move_cancel(struct l2cap_chan *chan, int result)
-{
- if (chan->move_role == L2CAP_MOVE_ROLE_RESPONDER) {
- u8 rsp_result;
- if (result == -EINVAL)
- rsp_result = L2CAP_MR_BAD_ID;
- else
- rsp_result = L2CAP_MR_NOT_ALLOWED;
-
- l2cap_send_move_chan_rsp(chan, rsp_result);
- }
-
- chan->move_role = L2CAP_MOVE_ROLE_NONE;
- chan->move_state = L2CAP_MOVE_STABLE;
-
- /* Restart data transmission */
- l2cap_ertm_send(chan);
-}
-
-/* Invoke with locked chan */
-void __l2cap_physical_cfm(struct l2cap_chan *chan, int result)
-{
- u8 local_amp_id = chan->local_amp_id;
- u8 remote_amp_id = chan->remote_amp_id;
-
- BT_DBG("chan %p, result %d, local_amp_id %d, remote_amp_id %d",
- chan, result, local_amp_id, remote_amp_id);
-
- if (chan->state == BT_DISCONN || chan->state == BT_CLOSED)
- return;
-
- if (chan->state != BT_CONNECTED) {
- l2cap_do_create(chan, result, local_amp_id, remote_amp_id);
- } else if (result != L2CAP_MR_SUCCESS) {
- l2cap_do_move_cancel(chan, result);
- } else {
- switch (chan->move_role) {
- case L2CAP_MOVE_ROLE_INITIATOR:
- l2cap_do_move_initiate(chan, local_amp_id,
- remote_amp_id);
- break;
- case L2CAP_MOVE_ROLE_RESPONDER:
- l2cap_do_move_respond(chan, result);
- break;
- default:
- l2cap_do_move_cancel(chan, result);
- break;
- }
- }
-}
-
-static inline int l2cap_move_channel_req(struct l2cap_conn *conn,
- struct l2cap_cmd_hdr *cmd,
- u16 cmd_len, void *data)
-{
- struct l2cap_move_chan_req *req = data;
- struct l2cap_move_chan_rsp rsp;
- struct l2cap_chan *chan;
- u16 icid = 0;
- u16 result = L2CAP_MR_NOT_ALLOWED;
-
- if (cmd_len != sizeof(*req))
- return -EPROTO;
-
- icid = le16_to_cpu(req->icid);
-
- BT_DBG("icid 0x%4.4x, dest_amp_id %d", icid, req->dest_amp_id);
-
- if (!(conn->local_fixed_chan & L2CAP_FC_A2MP))
- return -EINVAL;
-
- chan = l2cap_get_chan_by_dcid(conn, icid);
- if (!chan) {
- rsp.icid = cpu_to_le16(icid);
- rsp.result = cpu_to_le16(L2CAP_MR_NOT_ALLOWED);
- l2cap_send_cmd(conn, cmd->ident, L2CAP_MOVE_CHAN_RSP,
- sizeof(rsp), &rsp);
- return 0;
- }
-
- chan->ident = cmd->ident;
-
- if (chan->scid < L2CAP_CID_DYN_START ||
- chan->chan_policy == BT_CHANNEL_POLICY_BREDR_ONLY ||
- (chan->mode != L2CAP_MODE_ERTM &&
- chan->mode != L2CAP_MODE_STREAMING)) {
- result = L2CAP_MR_NOT_ALLOWED;
- goto send_move_response;
- }
-
- if (chan->local_amp_id == req->dest_amp_id) {
- result = L2CAP_MR_SAME_ID;
- goto send_move_response;
- }
-
- if (req->dest_amp_id != AMP_ID_BREDR) {
- struct hci_dev *hdev;
- hdev = hci_dev_get(req->dest_amp_id);
- if (!hdev || hdev->dev_type != HCI_AMP ||
- !test_bit(HCI_UP, &hdev->flags)) {
- if (hdev)
- hci_dev_put(hdev);
-
- result = L2CAP_MR_BAD_ID;
- goto send_move_response;
- }
- hci_dev_put(hdev);
- }
-
- /* Detect a move collision. Only send a collision response
- * if this side has "lost", otherwise proceed with the move.
- * The winner has the larger bd_addr.
- */
- if ((__chan_is_moving(chan) ||
- chan->move_role != L2CAP_MOVE_ROLE_NONE) &&
- bacmp(&conn->hcon->src, &conn->hcon->dst) > 0) {
- result = L2CAP_MR_COLLISION;
- goto send_move_response;
- }
-
- chan->move_role = L2CAP_MOVE_ROLE_RESPONDER;
- l2cap_move_setup(chan);
- chan->move_id = req->dest_amp_id;
-
- if (req->dest_amp_id == AMP_ID_BREDR) {
- /* Moving to BR/EDR */
- if (test_bit(CONN_LOCAL_BUSY, &chan->conn_state)) {
- chan->move_state = L2CAP_MOVE_WAIT_LOCAL_BUSY;
- result = L2CAP_MR_PEND;
- } else {
- chan->move_state = L2CAP_MOVE_WAIT_CONFIRM;
- result = L2CAP_MR_SUCCESS;
- }
- } else {
- chan->move_state = L2CAP_MOVE_WAIT_PREPARE;
- /* Placeholder - uncomment when amp functions are available */
- /*amp_accept_physical(chan, req->dest_amp_id);*/
- result = L2CAP_MR_PEND;
- }
-
-send_move_response:
- l2cap_send_move_chan_rsp(chan, result);
-
- l2cap_chan_unlock(chan);
- l2cap_chan_put(chan);
-
- return 0;
-}
-
-static void l2cap_move_continue(struct l2cap_conn *conn, u16 icid, u16 result)
-{
- struct l2cap_chan *chan;
- struct hci_chan *hchan = NULL;
-
- chan = l2cap_get_chan_by_scid(conn, icid);
- if (!chan) {
- l2cap_send_move_chan_cfm_icid(conn, icid);
- return;
- }
-
- __clear_chan_timer(chan);
- if (result == L2CAP_MR_PEND)
- __set_chan_timer(chan, L2CAP_MOVE_ERTX_TIMEOUT);
-
- switch (chan->move_state) {
- case L2CAP_MOVE_WAIT_LOGICAL_COMP:
- /* Move confirm will be sent when logical link
- * is complete.
- */
- chan->move_state = L2CAP_MOVE_WAIT_LOGICAL_CFM;
- break;
- case L2CAP_MOVE_WAIT_RSP_SUCCESS:
- if (result == L2CAP_MR_PEND) {
- break;
- } else if (test_bit(CONN_LOCAL_BUSY,
- &chan->conn_state)) {
- chan->move_state = L2CAP_MOVE_WAIT_LOCAL_BUSY;
- } else {
- /* Logical link is up or moving to BR/EDR,
- * proceed with move
- */
- chan->move_state = L2CAP_MOVE_WAIT_CONFIRM_RSP;
- l2cap_send_move_chan_cfm(chan, L2CAP_MC_CONFIRMED);
- }
- break;
- case L2CAP_MOVE_WAIT_RSP:
- /* Moving to AMP */
- if (result == L2CAP_MR_SUCCESS) {
- /* Remote is ready, send confirm immediately
- * after logical link is ready
- */
- chan->move_state = L2CAP_MOVE_WAIT_LOGICAL_CFM;
- } else {
- /* Both logical link and move success
- * are required to confirm
- */
- chan->move_state = L2CAP_MOVE_WAIT_LOGICAL_COMP;
- }
-
- /* Placeholder - get hci_chan for logical link */
- if (!hchan) {
- /* Logical link not available */
- l2cap_send_move_chan_cfm(chan, L2CAP_MC_UNCONFIRMED);
- break;
- }
-
- /* If the logical link is not yet connected, do not
- * send confirmation.
- */
- if (hchan->state != BT_CONNECTED)
- break;
-
- /* Logical link is already ready to go */
-
- chan->hs_hcon = hchan->conn;
- chan->hs_hcon->l2cap_data = chan->conn;
-
- if (result == L2CAP_MR_SUCCESS) {
- /* Can confirm now */
- l2cap_send_move_chan_cfm(chan, L2CAP_MC_CONFIRMED);
- } else {
- /* Now only need move success
- * to confirm
- */
- chan->move_state = L2CAP_MOVE_WAIT_RSP_SUCCESS;
- }
-
- l2cap_logical_cfm(chan, hchan, L2CAP_MR_SUCCESS);
- break;
- default:
- /* Any other amp move state means the move failed. */
- chan->move_id = chan->local_amp_id;
- l2cap_move_done(chan);
- l2cap_send_move_chan_cfm(chan, L2CAP_MC_UNCONFIRMED);
- }
-
- l2cap_chan_unlock(chan);
- l2cap_chan_put(chan);
-}
-
-static void l2cap_move_fail(struct l2cap_conn *conn, u8 ident, u16 icid,
- u16 result)
-{
- struct l2cap_chan *chan;
-
- chan = l2cap_get_chan_by_ident(conn, ident);
- if (!chan) {
- /* Could not locate channel, icid is best guess */
- l2cap_send_move_chan_cfm_icid(conn, icid);
- return;
- }
-
- __clear_chan_timer(chan);
-
- if (chan->move_role == L2CAP_MOVE_ROLE_INITIATOR) {
- if (result == L2CAP_MR_COLLISION) {
- chan->move_role = L2CAP_MOVE_ROLE_RESPONDER;
- } else {
- /* Cleanup - cancel move */
- chan->move_id = chan->local_amp_id;
- l2cap_move_done(chan);
- }
- }
-
- l2cap_send_move_chan_cfm(chan, L2CAP_MC_UNCONFIRMED);
-
- l2cap_chan_unlock(chan);
- l2cap_chan_put(chan);
-}
-
-static int l2cap_move_channel_rsp(struct l2cap_conn *conn,
- struct l2cap_cmd_hdr *cmd,
- u16 cmd_len, void *data)
-{
- struct l2cap_move_chan_rsp *rsp = data;
- u16 icid, result;
-
- if (cmd_len != sizeof(*rsp))
- return -EPROTO;
-
- icid = le16_to_cpu(rsp->icid);
- result = le16_to_cpu(rsp->result);
-
- BT_DBG("icid 0x%4.4x, result 0x%4.4x", icid, result);
-
- if (result == L2CAP_MR_SUCCESS || result == L2CAP_MR_PEND)
- l2cap_move_continue(conn, icid, result);
- else
- l2cap_move_fail(conn, cmd->ident, icid, result);
-
- return 0;
-}
-
-static int l2cap_move_channel_confirm(struct l2cap_conn *conn,
- struct l2cap_cmd_hdr *cmd,
- u16 cmd_len, void *data)
-{
- struct l2cap_move_chan_cfm *cfm = data;
- struct l2cap_chan *chan;
- u16 icid, result;
-
- if (cmd_len != sizeof(*cfm))
- return -EPROTO;
-
- icid = le16_to_cpu(cfm->icid);
- result = le16_to_cpu(cfm->result);
-
- BT_DBG("icid 0x%4.4x, result 0x%4.4x", icid, result);
-
- chan = l2cap_get_chan_by_dcid(conn, icid);
- if (!chan) {
- /* Spec requires a response even if the icid was not found */
- l2cap_send_move_chan_cfm_rsp(conn, cmd->ident, icid);
- return 0;
- }
-
- if (chan->move_state == L2CAP_MOVE_WAIT_CONFIRM) {
- if (result == L2CAP_MC_CONFIRMED) {
- chan->local_amp_id = chan->move_id;
- if (chan->local_amp_id == AMP_ID_BREDR)
- __release_logical_link(chan);
- } else {
- chan->move_id = chan->local_amp_id;
- }
-
- l2cap_move_done(chan);
- }
-
- l2cap_send_move_chan_cfm_rsp(conn, cmd->ident, icid);
-
- l2cap_chan_unlock(chan);
- l2cap_chan_put(chan);
-
- return 0;
-}
-
-static inline int l2cap_move_channel_confirm_rsp(struct l2cap_conn *conn,
- struct l2cap_cmd_hdr *cmd,
- u16 cmd_len, void *data)
-{
- struct l2cap_move_chan_cfm_rsp *rsp = data;
- struct l2cap_chan *chan;
- u16 icid;
-
- if (cmd_len != sizeof(*rsp))
- return -EPROTO;
-
- icid = le16_to_cpu(rsp->icid);
-
- BT_DBG("icid 0x%4.4x", icid);
-
- chan = l2cap_get_chan_by_scid(conn, icid);
- if (!chan)
- return 0;
-
- __clear_chan_timer(chan);
-
- if (chan->move_state == L2CAP_MOVE_WAIT_CONFIRM_RSP) {
- chan->local_amp_id = chan->move_id;
-
- if (chan->local_amp_id == AMP_ID_BREDR && chan->hs_hchan)
- __release_logical_link(chan);
-
- l2cap_move_done(chan);
- }
-
- l2cap_chan_unlock(chan);
- l2cap_chan_put(chan);
-
- return 0;
-}
-
static inline int l2cap_conn_param_update_req(struct l2cap_conn *conn,
struct l2cap_cmd_hdr *cmd,
u16 cmd_len, u8 *data)
break;
case L2CAP_CONN_RSP:
- case L2CAP_CREATE_CHAN_RSP:
l2cap_connect_create_rsp(conn, cmd, cmd_len, data);
break;
l2cap_information_rsp(conn, cmd, cmd_len, data);
break;
- case L2CAP_CREATE_CHAN_REQ:
- err = l2cap_create_channel_req(conn, cmd, cmd_len, data);
- break;
-
- case L2CAP_MOVE_CHAN_REQ:
- err = l2cap_move_channel_req(conn, cmd, cmd_len, data);
- break;
-
- case L2CAP_MOVE_CHAN_RSP:
- l2cap_move_channel_rsp(conn, cmd, cmd_len, data);
- break;
-
- case L2CAP_MOVE_CHAN_CFM:
- err = l2cap_move_channel_confirm(conn, cmd, cmd_len, data);
- break;
-
- case L2CAP_MOVE_CHAN_CFM_RSP:
- l2cap_move_channel_confirm_rsp(conn, cmd, cmd_len, data);
- break;
-
default:
BT_ERR("Unknown BR/EDR signaling command 0x%2.2x", cmd->code);
err = -EINVAL;
if (control->final) {
clear_bit(CONN_REMOTE_BUSY, &chan->conn_state);
- if (!test_and_clear_bit(CONN_REJ_ACT, &chan->conn_state) &&
- !__chan_is_moving(chan)) {
+ if (!test_and_clear_bit(CONN_REJ_ACT,
+ &chan->conn_state)) {
control->final = 0;
l2cap_retransmit_all(chan, control);
}
BT_DBG("chan %p", chan);
chan->rx_state = L2CAP_RX_STATE_RECV;
-
- if (chan->hs_hcon)
- chan->conn->mtu = chan->hs_hcon->hdev->block_mtu;
- else
- chan->conn->mtu = chan->conn->hcon->hdev->acl_mtu;
+ chan->conn->mtu = chan->conn->hcon->hdev->acl_mtu;
return l2cap_resegment(chan);
}
*/
chan->next_tx_seq = control->reqseq;
chan->unacked_frames = 0;
-
- if (chan->hs_hcon)
- chan->conn->mtu = chan->hs_hcon->hdev->block_mtu;
- else
- chan->conn->mtu = chan->conn->hcon->hdev->acl_mtu;
+ chan->conn->mtu = chan->conn->hcon->hdev->acl_mtu;
err = l2cap_resegment(chan);
chan = l2cap_get_chan_by_scid(conn, cid);
if (!chan) {
- if (cid == L2CAP_CID_A2MP) {
- chan = a2mp_channel_create(conn, skb);
- if (!chan) {
- kfree_skb(skb);
- return;
- }
-
- l2cap_chan_hold(chan);
- l2cap_chan_lock(chan);
- } else {
- BT_DBG("unknown cid 0x%4.4x", cid);
- /* Drop packet and return */
- kfree_skb(skb);
- return;
- }
+ BT_DBG("unknown cid 0x%4.4x", cid);
+ /* Drop packet and return */
+ kfree_skb(skb);
+ return;
}
BT_DBG("chan %p, len %d", chan, skb->len);
conn->local_fixed_chan = L2CAP_FC_SIG_BREDR | L2CAP_FC_CONNLESS;
- if (hcon->type == ACL_LINK &&
- hci_dev_test_flag(hcon->hdev, HCI_HS_ENABLED))
- conn->local_fixed_chan |= L2CAP_FC_A2MP;
-
if (hci_dev_test_flag(hcon->hdev, HCI_LE_ENABLED) &&
(bredr_sc_enabled(hcon->hdev) ||
hci_dev_test_flag(hcon->hdev, HCI_FORCE_BREDR_SMP)))
BT_DBG("chan %p scid 0x%4.4x state %s", chan, chan->scid,
state_to_string(chan->state));
- if (chan->scid == L2CAP_CID_A2MP) {
- l2cap_chan_unlock(chan);
- continue;
- }
-
if (!status && encrypt)
chan->sec_level = hcon->sec_level;
break;
}
- if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) {
- err = -EINVAL;
- break;
- }
-
- if (chan->mode != L2CAP_MODE_ERTM &&
- chan->mode != L2CAP_MODE_STREAMING) {
- err = -EOPNOTSUPP;
- break;
- }
-
- chan->chan_policy = (u8) opt;
-
- if (sk->sk_state == BT_CONNECTED &&
- chan->move_role == L2CAP_MOVE_ROLE_NONE)
- l2cap_move_start(chan);
-
+ err = -EOPNOTSUPP;
break;
case BT_SNDMTU:
if (lmp_ssp_capable(hdev)) {
settings |= MGMT_SETTING_SSP;
- if (IS_ENABLED(CONFIG_BT_HS))
- settings |= MGMT_SETTING_HS;
}
if (lmp_sc_capable(hdev))
if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
settings |= MGMT_SETTING_SSP;
- if (hci_dev_test_flag(hdev, HCI_HS_ENABLED))
- settings |= MGMT_SETTING_HS;
-
if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
settings |= MGMT_SETTING_ADVERTISING;
if (enable && hci_dev_test_and_clear_flag(hdev,
HCI_SSP_ENABLED)) {
- hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
new_settings(hdev, NULL);
}
changed = !hci_dev_test_and_set_flag(hdev, HCI_SSP_ENABLED);
} else {
changed = hci_dev_test_and_clear_flag(hdev, HCI_SSP_ENABLED);
-
- if (!changed)
- changed = hci_dev_test_and_clear_flag(hdev,
- HCI_HS_ENABLED);
- else
- hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
}
mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, settings_rsp, &match);
} else {
changed = hci_dev_test_and_clear_flag(hdev,
HCI_SSP_ENABLED);
- if (!changed)
- changed = hci_dev_test_and_clear_flag(hdev,
- HCI_HS_ENABLED);
- else
- hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
}
err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev);
static int set_hs(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
{
- struct mgmt_mode *cp = data;
- bool changed;
- u8 status;
- int err;
-
bt_dev_dbg(hdev, "sock %p", sk);
- if (!IS_ENABLED(CONFIG_BT_HS))
- return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
+ return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
MGMT_STATUS_NOT_SUPPORTED);
-
- status = mgmt_bredr_support(hdev);
- if (status)
- return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, status);
-
- if (!lmp_ssp_capable(hdev))
- return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
- MGMT_STATUS_NOT_SUPPORTED);
-
- if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
- return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
- MGMT_STATUS_REJECTED);
-
- if (cp->val != 0x00 && cp->val != 0x01)
- return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
- MGMT_STATUS_INVALID_PARAMS);
-
- hci_dev_lock(hdev);
-
- if (pending_find(MGMT_OP_SET_SSP, hdev)) {
- err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
- MGMT_STATUS_BUSY);
- goto unlock;
- }
-
- if (cp->val) {
- changed = !hci_dev_test_and_set_flag(hdev, HCI_HS_ENABLED);
- } else {
- if (hdev_is_powered(hdev)) {
- err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
- MGMT_STATUS_REJECTED);
- goto unlock;
- }
-
- changed = hci_dev_test_and_clear_flag(hdev, HCI_HS_ENABLED);
- }
-
- err = send_settings_rsp(sk, MGMT_OP_SET_HS, hdev);
- if (err < 0)
- goto unlock;
-
- if (changed)
- err = new_settings(hdev, sk);
-
-unlock:
- hci_dev_unlock(hdev);
- return err;
}
static void set_le_complete(struct hci_dev *hdev, void *data, int err)
hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
hci_dev_clear_flag(hdev, HCI_LINK_SECURITY);
hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE);
- hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
}
hci_dev_change_flag(hdev, HCI_BREDR_ENABLED);
projects / linux.git / commitdiff