static int
ng_hci_lp_acl_con_req(ng_hci_unit_p unit, item_p item, hook_p hook)
{
struct acl_con_req {
ng_hci_cmd_pkt_t hdr;
ng_hci_create_con_cp cp;
} __attribute__ ((packed)) *req = NULL;
ng_hci_lp_con_req_ep *ep = NULL;
ng_hci_unit_con_p con = NULL;
ng_hci_neighbor_t *n = NULL;
struct mbuf *m = NULL;
int error = 0;
ep = (ng_hci_lp_con_req_ep *)(NGI_MSG(item)->data);
/*
* Only one ACL connection can exist between each pair of units.
* So try to find ACL connection descriptor (in any state) that
* has requested remote BD_ADDR.
*
* Two cases:
*
* 1) We do not have connection to the remote unit. This is simple.
* Just create new connection descriptor and send HCI command to
* create new connection.
*
* 2) We do have connection descriptor. We need to check connection
* state:
*
* 2.1) NG_HCI_CON_W4_LP_CON_RSP means that we are in the middle of
* accepting connection from the remote unit. This is a race
* condition. We will ignore this message.
*
* 2.2) NG_HCI_CON_W4_CONN_COMPLETE means that upper layer already
* requested connection or we just accepted it. In any case
* all we need to do here is set appropriate notification bit
* and wait.
*
* 2.3) NG_HCI_CON_OPEN means connection is open. Just reply back
* and let upper layer know that we have connection already.
*/
con = ng_hci_con_by_bdaddr(unit, &ep->bdaddr, NG_HCI_LINK_ACL);
if (con != NULL) {
switch (con->state) {
case NG_HCI_CON_W4_LP_CON_RSP: /* XXX */
error = EALREADY;
break;
case NG_HCI_CON_W4_CONN_COMPLETE:
if (hook == unit->acl)
con->flags |= NG_HCI_CON_NOTIFY_ACL;
else
con->flags |= NG_HCI_CON_NOTIFY_SCO;
break;
case NG_HCI_CON_OPEN: {
struct ng_mesg *msg = NULL;
ng_hci_lp_con_cfm_ep *cfm = NULL;
if (hook != NULL && NG_HOOK_IS_VALID(hook)) {
NGI_GET_MSG(item, msg);
NG_FREE_MSG(msg);
NG_MKMESSAGE(msg, NGM_HCI_COOKIE,
NGM_HCI_LP_CON_CFM, sizeof(*cfm),
M_NOWAIT);
if (msg != NULL) {
cfm = (ng_hci_lp_con_cfm_ep *)msg->data;
cfm->status = 0;
cfm->link_type = con->link_type;
cfm->con_handle = con->con_handle;
bcopy(&con->bdaddr, &cfm->bdaddr,
sizeof(cfm->bdaddr));
/*
* This will forward item back to
* sender and set item to NULL
*/
_NGI_MSG(item) = msg;
NG_FWD_ITEM_HOOK(error, item, hook);
} else
error = ENOMEM;
} else
NG_HCI_INFO(
"%s: %s - Source hook is not valid, hook=%p\n",
__func__, NG_NODE_NAME(unit->node),
hook);
} break;
default:
panic(
"%s: %s - Invalid connection state=%d\n",
__func__, NG_NODE_NAME(unit->node), con->state);
break;
}
goto out;
}
/*
* If we got here then we need to create new ACL connection descriptor
* and submit HCI command. First create new connection desriptor, set
* bdaddr and notification flags.
*/
con = ng_hci_new_con(unit, NG_HCI_LINK_ACL);
if (con == NULL) {
error = ENOMEM;
goto out;
}
bcopy(&ep->bdaddr, &con->bdaddr, sizeof(con->bdaddr));
/*
* Create HCI command
*/
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
ng_hci_free_con(con);
error = ENOBUFS;
goto out;
}
m->m_pkthdr.len = m->m_len = sizeof(*req);
req = mtod(m, struct acl_con_req *);
req->hdr.type = NG_HCI_CMD_PKT;
req->hdr.length = sizeof(req->cp);
req->hdr.opcode = htole16(NG_HCI_OPCODE(NG_HCI_OGF_LINK_CONTROL,
NG_HCI_OCF_CREATE_CON));
bcopy(&ep->bdaddr, &req->cp.bdaddr, sizeof(req->cp.bdaddr));
req->cp.pkt_type = (NG_HCI_PKT_DM1|NG_HCI_PKT_DH1);
if (unit->features[0] & NG_HCI_LMP_3SLOT)
req->cp.pkt_type |= (NG_HCI_PKT_DM3|NG_HCI_PKT_DH3);
if (unit->features[0] & NG_HCI_LMP_5SLOT)
req->cp.pkt_type |= (NG_HCI_PKT_DM5|NG_HCI_PKT_DH5);
req->cp.pkt_type &= unit->packet_mask;
if ((req->cp.pkt_type & (NG_HCI_PKT_DM1|NG_HCI_PKT_DH1|
NG_HCI_PKT_DM3|NG_HCI_PKT_DH3|
NG_HCI_PKT_DM5|NG_HCI_PKT_DH5)) == 0)
req->cp.pkt_type = (NG_HCI_PKT_DM1|NG_HCI_PKT_DH1);
req->cp.pkt_type = htole16(req->cp.pkt_type);
if ((unit->features[0] & NG_HCI_LMP_SWITCH) && unit->role_switch)
req->cp.accept_role_switch = 1;
else
req->cp.accept_role_switch = 0;
/*
* We may speed up connect by specifying valid parameters.
* So check the neighbor cache.
*/
n = ng_hci_get_neighbor(unit, &ep->bdaddr);
if (n == NULL) {
req->cp.page_scan_rep_mode = 0;
req->cp.page_scan_mode = 0;
req->cp.clock_offset = 0;
} else {
req->cp.page_scan_rep_mode = n->page_scan_rep_mode;
req->cp.page_scan_mode = n->page_scan_mode;
req->cp.clock_offset = htole16(n->clock_offset);
}
/*
* Adust connection state
*/
if (hook == unit->acl)
con->flags |= NG_HCI_CON_NOTIFY_ACL;
else
con->flags |= NG_HCI_CON_NOTIFY_SCO;
con->state = NG_HCI_CON_W4_CONN_COMPLETE;
ng_hci_con_timeout(con);
/*
* Queue and send HCI command
*/
NG_BT_MBUFQ_ENQUEUE(&unit->cmdq, m);
if (!(unit->state & NG_HCI_UNIT_COMMAND_PENDING))
error = ng_hci_send_command(unit);
out:
if (item != NULL)
NG_FREE_ITEM(item);
return (error);
} /* ng_hci_lp_acl_con_req */
static int
ng_hci_lp_le_con_req(ng_hci_unit_p unit, item_p item, hook_p hook, int link_type)
{
struct acl_con_req {
ng_hci_cmd_pkt_t hdr;
ng_hci_le_create_connection_cp cp;
} __attribute__ ((packed)) *req = NULL;
ng_hci_lp_con_req_ep *ep = NULL;
ng_hci_unit_con_p con = NULL;
struct mbuf *m = NULL;
int error = 0;
ep = (ng_hci_lp_con_req_ep *)(NGI_MSG(item)->data);
if((link_type != NG_HCI_LINK_LE_PUBLIC)&&
(link_type != NG_HCI_LINK_LE_RANDOM)){
printf("%s: Link type %d Cannot be here \n", __func__,
link_type);
}
/*
* Only one ACL connection can exist between each pair of units.
* So try to find ACL connection descriptor (in any state) that
* has requested remote BD_ADDR.
*
* Two cases:
*
* 1) We do not have connection to the remote unit. This is simple.
* Just create new connection descriptor and send HCI command to
* create new connection.
*
* 2) We do have connection descriptor. We need to check connection
* state:
*
* 2.1) NG_HCI_CON_W4_LP_CON_RSP means that we are in the middle of
* accepting connection from the remote unit. This is a race
* condition. We will ignore this message.
*
* 2.2) NG_HCI_CON_W4_CONN_COMPLETE means that upper layer already
* requested connection or we just accepted it. In any case
* all we need to do here is set appropriate notification bit
* and wait.
*
* 2.3) NG_HCI_CON_OPEN means connection is open. Just reply back
* and let upper layer know that we have connection already.
*/
con = ng_hci_con_by_bdaddr(unit, &ep->bdaddr, link_type);
if (con != NULL) {
switch (con->state) {
case NG_HCI_CON_W4_LP_CON_RSP: /* XXX */
error = EALREADY;
break;
case NG_HCI_CON_W4_CONN_COMPLETE:
if (hook != unit->sco)
con->flags |= NG_HCI_CON_NOTIFY_ACL;
else
con->flags |= NG_HCI_CON_NOTIFY_SCO;
break;
case NG_HCI_CON_OPEN: {
struct ng_mesg *msg = NULL;
ng_hci_lp_con_cfm_ep *cfm = NULL;
if (hook != NULL && NG_HOOK_IS_VALID(hook)) {
NGI_GET_MSG(item, msg);
NG_FREE_MSG(msg);
NG_MKMESSAGE(msg, NGM_HCI_COOKIE,
NGM_HCI_LP_CON_CFM, sizeof(*cfm),
M_NOWAIT);
if (msg != NULL) {
cfm = (ng_hci_lp_con_cfm_ep *)msg->data;
cfm->status = 0;
cfm->link_type = con->link_type;
cfm->con_handle = con->con_handle;
bcopy(&con->bdaddr, &cfm->bdaddr,
sizeof(cfm->bdaddr));
/*
* This will forward item back to
* sender and set item to NULL
*/
_NGI_MSG(item) = msg;
NG_FWD_ITEM_HOOK(error, item, hook);
} else
error = ENOMEM;
} else
NG_HCI_INFO(
"%s: %s - Source hook is not valid, hook=%p\n",
__func__, NG_NODE_NAME(unit->node),
hook);
} break;
default:
panic(
"%s: %s - Invalid connection state=%d\n",
__func__, NG_NODE_NAME(unit->node), con->state);
break;
}
goto out;
}
/*
* If we got here then we need to create new ACL connection descriptor
* and submit HCI command. First create new connection desriptor, set
* bdaddr and notification flags.
*/
con = ng_hci_new_con(unit, link_type);
if (con == NULL) {
error = ENOMEM;
goto out;
}
bcopy(&ep->bdaddr, &con->bdaddr, sizeof(con->bdaddr));
/*
* Create HCI command
*/
MGETHDR(m, M_NOWAIT, MT_DATA);
if (m == NULL) {
ng_hci_free_con(con);
error = ENOBUFS;
goto out;
}
m->m_pkthdr.len = m->m_len = sizeof(*req);
req = mtod(m, struct acl_con_req *);
req->hdr.type = NG_HCI_CMD_PKT;
req->hdr.length = sizeof(req->cp);
req->hdr.opcode = htole16(NG_HCI_OPCODE(NG_HCI_OGF_LE,
NG_HCI_OCF_LE_CREATE_CONNECTION));
bcopy(&ep->bdaddr, &req->cp.peer_addr, sizeof(req->cp.peer_addr));
req->cp.own_address_type = 0;
req->cp.peer_addr_type = (link_type == NG_HCI_LINK_LE_RANDOM)? 1:0;
req->cp.scan_interval = htole16(4);
req->cp.scan_window = htole16(4);
req->cp.filter_policy = 0;
req->cp.conn_interval_min = htole16(0xf);
req->cp.conn_interval_max = htole16(0xf);
req->cp.conn_latency = htole16(0);
req->cp.supervision_timeout = htole16(0xc80);
req->cp.min_ce_length = htole16(1);
req->cp.max_ce_length = htole16(1);
/*
* Adust connection state
*/
if (hook != unit->sco)
con->flags |= NG_HCI_CON_NOTIFY_ACL;
else
con->flags |= NG_HCI_CON_NOTIFY_SCO;
con->state = NG_HCI_CON_W4_CONN_COMPLETE;
ng_hci_con_timeout(con);
/*
* Queue and send HCI command
*/
NG_BT_MBUFQ_ENQUEUE(&unit->cmdq, m);
if (!(unit->state & NG_HCI_UNIT_COMMAND_PENDING))
error = ng_hci_send_command(unit);
out:
if (item != NULL)
NG_FREE_ITEM(item);
return (error);
} /* ng_hci_lp_acl_con_req */