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/*
* ng_hci_main.c
*/
/*-
* Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: ng_hci_main.c,v 1.2 2003/03/18 00:09:36 max Exp $
* $FreeBSD: release/9.1.0/sys/netgraph/bluetooth/hci/ng_hci_main.c 220768 2011-04-18 09:12:27Z glebius $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/endian.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/queue.h>
#include <netgraph/ng_message.h>
#include <netgraph/netgraph.h>
#include <netgraph/ng_parse.h>
#include <netgraph/bluetooth/include/ng_bluetooth.h>
#include <netgraph/bluetooth/include/ng_hci.h>
#include <netgraph/bluetooth/hci/ng_hci_var.h>
#include <netgraph/bluetooth/hci/ng_hci_prse.h>
#include <netgraph/bluetooth/hci/ng_hci_cmds.h>
#include <netgraph/bluetooth/hci/ng_hci_evnt.h>
#include <netgraph/bluetooth/hci/ng_hci_ulpi.h>
#include <netgraph/bluetooth/hci/ng_hci_misc.h>
/******************************************************************************
******************************************************************************
** This node implements Bluetooth Host Controller Interface (HCI)
******************************************************************************
******************************************************************************/
/* MALLOC define */
#ifdef NG_SEPARATE_MALLOC
MALLOC_DEFINE(M_NETGRAPH_HCI, "netgraph_hci", "Netgraph Bluetooth HCI node");
#else
#define M_NETGRAPH_HCI M_NETGRAPH
#endif /* NG_SEPARATE_MALLOC */
/* Netgraph node methods */
static ng_constructor_t ng_hci_constructor;
static ng_shutdown_t ng_hci_shutdown;
static ng_newhook_t ng_hci_newhook;
static ng_connect_t ng_hci_connect;
static ng_disconnect_t ng_hci_disconnect;
static ng_rcvmsg_t ng_hci_default_rcvmsg;
static ng_rcvmsg_t ng_hci_upper_rcvmsg;
static ng_rcvdata_t ng_hci_drv_rcvdata;
static ng_rcvdata_t ng_hci_acl_rcvdata;
static ng_rcvdata_t ng_hci_sco_rcvdata;
static ng_rcvdata_t ng_hci_raw_rcvdata;
/* Netgraph node type descriptor */
static struct ng_type typestruct = {
.version = NG_ABI_VERSION,
.name = NG_HCI_NODE_TYPE,
.constructor = ng_hci_constructor,
.rcvmsg = ng_hci_default_rcvmsg,
.shutdown = ng_hci_shutdown,
.newhook = ng_hci_newhook,
.connect = ng_hci_connect,
.rcvdata = ng_hci_drv_rcvdata,
.disconnect = ng_hci_disconnect,
.cmdlist = ng_hci_cmdlist,
};
NETGRAPH_INIT(hci, &typestruct);
MODULE_VERSION(ng_hci, NG_BLUETOOTH_VERSION);
MODULE_DEPEND(ng_hci, ng_bluetooth, NG_BLUETOOTH_VERSION,
NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION);
/*****************************************************************************
*****************************************************************************
** Netgraph methods implementation
*****************************************************************************
*****************************************************************************/
/*
* Create new instance of HCI node (new unit)
*/
static int
ng_hci_constructor(node_p node)
{
ng_hci_unit_p unit = NULL;
unit = malloc(sizeof(*unit), M_NETGRAPH_HCI, M_WAITOK | M_ZERO);
unit->node = node;
unit->debug = NG_HCI_WARN_LEVEL;
unit->link_policy_mask = 0xffff; /* Enable all supported modes */
unit->packet_mask = 0xffff; /* Enable all packet types */
unit->role_switch = 1; /* Enable role switch (if device supports it) */
/*
* Set default buffer info
*
* One HCI command
* One ACL packet with max. size of 17 bytes (1 DM1 packet)
* One SCO packet with max. size of 10 bytes (1 HV1 packet)
*/
NG_HCI_BUFF_CMD_SET(unit->buffer, 1);
NG_HCI_BUFF_ACL_SET(unit->buffer, 1, 17, 1);
NG_HCI_BUFF_SCO_SET(unit->buffer, 1, 10, 1);
/* Init command queue & command timeout handler */
ng_callout_init(&unit->cmd_timo);
NG_BT_MBUFQ_INIT(&unit->cmdq, NG_HCI_CMD_QUEUE_LEN);
/* Init lists */
LIST_INIT(&unit->con_list);
LIST_INIT(&unit->neighbors);
/*
* This node has to be a WRITER because both data and messages
* can change node state.
*/
NG_NODE_FORCE_WRITER(node);
NG_NODE_SET_PRIVATE(node, unit);
return (0);
} /* ng_hci_constructor */
/*
* Destroy the node
*/
static int
ng_hci_shutdown(node_p node)
{
ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(node);
NG_NODE_SET_PRIVATE(node, NULL);
NG_NODE_UNREF(node);
unit->node = NULL;
ng_hci_unit_clean(unit, 0x16 /* Connection terminated by local host */);
NG_BT_MBUFQ_DESTROY(&unit->cmdq);
bzero(unit, sizeof(*unit));
free(unit, M_NETGRAPH_HCI);
return (0);
} /* ng_hci_shutdown */
/*
* Give our OK for a hook to be added. Unit driver is connected to the driver
* (NG_HCI_HOOK_DRV) hook. Upper layer protocols are connected to appropriate
* (NG_HCI_HOOK_ACL or NG_HCI_HOOK_SCO) hooks.
*/
static int
ng_hci_newhook(node_p node, hook_p hook, char const *name)
{
ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(node);
hook_p *h = NULL;
if (strcmp(name, NG_HCI_HOOK_DRV) == 0)
h = &unit->drv;
else if (strcmp(name, NG_HCI_HOOK_ACL) == 0)
h = &unit->acl;
else if (strcmp(name, NG_HCI_HOOK_SCO) == 0)
h = &unit->sco;
else if (strcmp(name, NG_HCI_HOOK_RAW) == 0)
h = &unit->raw;
else
return (EINVAL);
if (*h != NULL)
return (EISCONN);
*h = hook;
return (0);
} /* ng_hci_newhook */
/*
* Give our final OK to connect hook
*/
static int
ng_hci_connect(hook_p hook)
{
ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
if (hook != unit->drv) {
if (hook == unit->acl) {
NG_HOOK_SET_RCVMSG(hook, ng_hci_upper_rcvmsg);
NG_HOOK_SET_RCVDATA(hook, ng_hci_acl_rcvdata);
} else if (hook == unit->sco) {
NG_HOOK_SET_RCVMSG(hook, ng_hci_upper_rcvmsg);
NG_HOOK_SET_RCVDATA(hook, ng_hci_sco_rcvdata);
} else
NG_HOOK_SET_RCVDATA(hook, ng_hci_raw_rcvdata);
/* Send delayed notification to the upper layers */
if (hook != unit->raw)
ng_send_fn(unit->node, hook, ng_hci_node_is_up, NULL,0);
} else
unit->state |= NG_HCI_UNIT_CONNECTED;
return (0);
} /* ng_hci_connect */
/*
* Disconnect the hook
*/
static int
ng_hci_disconnect(hook_p hook)
{
ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
if (hook == unit->acl)
unit->acl = NULL;
else if (hook == unit->sco)
unit->sco = NULL;
else if (hook == unit->raw)
unit->raw = NULL;
else if (hook == unit->drv) {
unit->drv = NULL;
/* Connection terminated by local host */
ng_hci_unit_clean(unit, 0x16);
unit->state &= ~(NG_HCI_UNIT_CONNECTED|NG_HCI_UNIT_INITED);
} else
return (EINVAL);
/* Shutdown when all hooks are disconnected */
if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0) &&
(NG_NODE_IS_VALID(NG_HOOK_NODE(hook))))
ng_rmnode_self(NG_HOOK_NODE(hook));
return (0);
} /* ng_hci_disconnect */
/*
* Default control message processing routine. Control message could be:
*
* 1) GENERIC Netgraph messages
*
* 2) Control message directed to the node itself.
*/
static int
ng_hci_default_rcvmsg(node_p node, item_p item, hook_p lasthook)
{
ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(node);
struct ng_mesg *msg = NULL, *rsp = NULL;
int error = 0;
NGI_GET_MSG(item, msg);
switch (msg->header.typecookie) {
case NGM_GENERIC_COOKIE:
switch (msg->header.cmd) {
case NGM_TEXT_STATUS: {
int cmd_avail,
acl_total, acl_avail, acl_size,
sco_total, sco_avail, sco_size;
NG_MKRESPONSE(rsp, msg, NG_TEXTRESPONSE, M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
NG_HCI_BUFF_CMD_GET(unit->buffer, cmd_avail);
NG_HCI_BUFF_ACL_AVAIL(unit->buffer, acl_avail);
NG_HCI_BUFF_ACL_TOTAL(unit->buffer, acl_total);
NG_HCI_BUFF_ACL_SIZE(unit->buffer, acl_size);
NG_HCI_BUFF_SCO_AVAIL(unit->buffer, sco_avail);
NG_HCI_BUFF_SCO_TOTAL(unit->buffer, sco_total);
NG_HCI_BUFF_SCO_SIZE(unit->buffer, sco_size);
snprintf(rsp->data, NG_TEXTRESPONSE,
"bdaddr %x:%x:%x:%x:%x:%x\n" \
"Hooks %s %s %s %s\n" \
"State %#x\n" \
"Queue cmd:%d\n" \
"Buffer cmd:%d,acl:%d,%d,%d,sco:%d,%d,%d",
unit->bdaddr.b[5], unit->bdaddr.b[4],
unit->bdaddr.b[3], unit->bdaddr.b[2],
unit->bdaddr.b[1], unit->bdaddr.b[0],
(unit->drv != NULL)? NG_HCI_HOOK_DRV : "",
(unit->acl != NULL)? NG_HCI_HOOK_ACL : "",
(unit->sco != NULL)? NG_HCI_HOOK_SCO : "",
(unit->raw != NULL)? NG_HCI_HOOK_RAW : "",
unit->state,
NG_BT_MBUFQ_LEN(&unit->cmdq),
cmd_avail,
acl_avail, acl_total, acl_size,
sco_avail, sco_total, sco_size);
} break;
default:
error = EINVAL;
break;
}
break;
case NGM_HCI_COOKIE:
switch (msg->header.cmd) {
/* Get current node state */
case NGM_HCI_NODE_GET_STATE:
NG_MKRESPONSE(rsp, msg, sizeof(unit->state), M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
*((ng_hci_node_state_ep *)(rsp->data)) = unit->state;
break;
/* Turn INITED bit - node initialized */
case NGM_HCI_NODE_INIT:
if (bcmp(&unit->bdaddr, NG_HCI_BDADDR_ANY,
sizeof(bdaddr_t)) == 0) {
error = ENXIO;
break;
}
unit->state |= NG_HCI_UNIT_INITED;
ng_hci_node_is_up(unit->node, unit->acl, NULL, 0);
ng_hci_node_is_up(unit->node, unit->sco, NULL, 0);
break;
/* Get node debug level */
case NGM_HCI_NODE_GET_DEBUG:
NG_MKRESPONSE(rsp, msg, sizeof(unit->debug), M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
*((ng_hci_node_debug_ep *)(rsp->data)) = unit->debug;
break;
/* Set node debug level */
case NGM_HCI_NODE_SET_DEBUG:
if (msg->header.arglen != sizeof(ng_hci_node_debug_ep)){
error = EMSGSIZE;
break;
}
unit->debug = *((ng_hci_node_debug_ep *)(msg->data));
break;
/* Get buffer info */
case NGM_HCI_NODE_GET_BUFFER: {
ng_hci_node_buffer_ep *ep = NULL;
NG_MKRESPONSE(rsp, msg, sizeof(ng_hci_node_buffer_ep),
M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
ep = (ng_hci_node_buffer_ep *)(rsp->data);
NG_HCI_BUFF_CMD_GET(unit->buffer, ep->cmd_free);
NG_HCI_BUFF_ACL_AVAIL(unit->buffer, ep->acl_free);
NG_HCI_BUFF_ACL_TOTAL(unit->buffer, ep->acl_pkts);
NG_HCI_BUFF_ACL_SIZE(unit->buffer, ep->acl_size);
NG_HCI_BUFF_SCO_AVAIL(unit->buffer, ep->sco_free);
NG_HCI_BUFF_SCO_TOTAL(unit->buffer, ep->sco_pkts);
NG_HCI_BUFF_SCO_SIZE(unit->buffer, ep->sco_size);
} break;
/* Get BDADDR */
case NGM_HCI_NODE_GET_BDADDR:
NG_MKRESPONSE(rsp, msg, sizeof(bdaddr_t), M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
bcopy(&unit->bdaddr, rsp->data, sizeof(bdaddr_t));
break;
/* Get features */
case NGM_HCI_NODE_GET_FEATURES:
NG_MKRESPONSE(rsp,msg,sizeof(unit->features),M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
bcopy(&unit->features,rsp->data,sizeof(unit->features));
break;
/* Get stat */
case NGM_HCI_NODE_GET_STAT:
NG_MKRESPONSE(rsp, msg, sizeof(unit->stat), M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
bcopy(&unit->stat, rsp->data, sizeof(unit->stat));
break;
/* Reset stat */
case NGM_HCI_NODE_RESET_STAT:
NG_HCI_STAT_RESET(unit->stat);
break;
/* Clean up neighbors list */
case NGM_HCI_NODE_FLUSH_NEIGHBOR_CACHE:
ng_hci_flush_neighbor_cache(unit);
break;
/* Get neighbor cache entries */
case NGM_HCI_NODE_GET_NEIGHBOR_CACHE: {
ng_hci_neighbor_p n = NULL;
ng_hci_node_get_neighbor_cache_ep *e1 = NULL;
ng_hci_node_neighbor_cache_entry_ep *e2 = NULL;
int s = 0;
/* Look for the fresh entries in the cache */
for (n = LIST_FIRST(&unit->neighbors); n != NULL; ) {
ng_hci_neighbor_p nn = LIST_NEXT(n, next);
if (ng_hci_neighbor_stale(n))
ng_hci_free_neighbor(n);
else
s ++;
n = nn;
}
if (s > NG_HCI_MAX_NEIGHBOR_NUM)
s = NG_HCI_MAX_NEIGHBOR_NUM;
/* Prepare response */
NG_MKRESPONSE(rsp, msg, sizeof(*e1) + s * sizeof(*e2),
M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
e1 = (ng_hci_node_get_neighbor_cache_ep *)(rsp->data);
e2 = (ng_hci_node_neighbor_cache_entry_ep *)(e1 + 1);
e1->num_entries = s;
LIST_FOREACH(n, &unit->neighbors, next) {
e2->page_scan_rep_mode = n->page_scan_rep_mode;
e2->page_scan_mode = n->page_scan_mode;
e2->clock_offset = n->clock_offset;
bcopy(&n->bdaddr, &e2->bdaddr,
sizeof(e2->bdaddr));
bcopy(&n->features, &e2->features,
sizeof(e2->features));
e2 ++;
if (--s <= 0)
break;
}
} break;
/* Get connection list */
case NGM_HCI_NODE_GET_CON_LIST: {
ng_hci_unit_con_p c = NULL;
ng_hci_node_con_list_ep *e1 = NULL;
ng_hci_node_con_ep *e2 = NULL;
int s = 0;
/* Count number of connections in the list */
LIST_FOREACH(c, &unit->con_list, next)
s ++;
if (s > NG_HCI_MAX_CON_NUM)
s = NG_HCI_MAX_CON_NUM;
/* Prepare response */
NG_MKRESPONSE(rsp, msg, sizeof(*e1) + s * sizeof(*e2),
M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
e1 = (ng_hci_node_con_list_ep *)(rsp->data);
e2 = (ng_hci_node_con_ep *)(e1 + 1);
e1->num_connections = s;
LIST_FOREACH(c, &unit->con_list, next) {
e2->link_type = c->link_type;
e2->encryption_mode= c->encryption_mode;
e2->mode = c->mode;
e2->role = c->role;
e2->state = c->state;
e2->pending = c->pending;
e2->queue_len = NG_BT_ITEMQ_LEN(&c->conq);
e2->con_handle = c->con_handle;
bcopy(&c->bdaddr, &e2->bdaddr,
sizeof(e2->bdaddr));
e2 ++;
if (--s <= 0)
break;
}
} break;
/* Get link policy settings mask */
case NGM_HCI_NODE_GET_LINK_POLICY_SETTINGS_MASK:
NG_MKRESPONSE(rsp, msg, sizeof(unit->link_policy_mask),
M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
*((ng_hci_node_link_policy_mask_ep *)(rsp->data)) =
unit->link_policy_mask;
break;
/* Set link policy settings mask */
case NGM_HCI_NODE_SET_LINK_POLICY_SETTINGS_MASK:
if (msg->header.arglen !=
sizeof(ng_hci_node_link_policy_mask_ep)) {
error = EMSGSIZE;
break;
}
unit->link_policy_mask =
*((ng_hci_node_link_policy_mask_ep *)
(msg->data));
break;
/* Get packet mask */
case NGM_HCI_NODE_GET_PACKET_MASK:
NG_MKRESPONSE(rsp, msg, sizeof(unit->packet_mask),
M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
*((ng_hci_node_packet_mask_ep *)(rsp->data)) =
unit->packet_mask;
break;
/* Set packet mask */
case NGM_HCI_NODE_SET_PACKET_MASK:
if (msg->header.arglen !=
sizeof(ng_hci_node_packet_mask_ep)) {
error = EMSGSIZE;
break;
}
unit->packet_mask =
*((ng_hci_node_packet_mask_ep *)(msg->data));
break;
/* Get role switch */
case NGM_HCI_NODE_GET_ROLE_SWITCH:
NG_MKRESPONSE(rsp, msg, sizeof(unit->role_switch),
M_NOWAIT);
if (rsp == NULL) {
error = ENOMEM;
break;
}
*((ng_hci_node_role_switch_ep *)(rsp->data)) =
unit->role_switch;
break;
/* Set role switch */
case NGM_HCI_NODE_SET_ROLE_SWITCH:
if (msg->header.arglen !=
sizeof(ng_hci_node_role_switch_ep)) {
error = EMSGSIZE;
break;
}
unit->role_switch =
*((ng_hci_node_role_switch_ep *)(msg->data));
break;
default:
error = EINVAL;
break;
}
break;
default:
error = EINVAL;
break;
}
/* NG_RESPOND_MSG should take care of "item" and "rsp" */
NG_RESPOND_MSG(error, node, item, rsp);
NG_FREE_MSG(msg);
return (error);
} /* ng_hci_default_rcvmsg */
/*
* Process control message from upstream hooks (ACL and SCO).
* Handle LP_xxx messages here, give everything else to default routine.
*/
static int
ng_hci_upper_rcvmsg(node_p node, item_p item, hook_p lasthook)
{
ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(node);
int error = 0;
switch (NGI_MSG(item)->header.typecookie) {
case NGM_HCI_COOKIE:
switch (NGI_MSG(item)->header.cmd) {
case NGM_HCI_LP_CON_REQ:
error = ng_hci_lp_con_req(unit, item, lasthook);
break;
case NGM_HCI_LP_DISCON_REQ: /* XXX not defined by specs */
error = ng_hci_lp_discon_req(unit, item, lasthook);
break;
case NGM_HCI_LP_CON_RSP:
error = ng_hci_lp_con_rsp(unit, item, lasthook);
break;
case NGM_HCI_LP_QOS_REQ:
error = ng_hci_lp_qos_req(unit, item, lasthook);
break;
default:
error = ng_hci_default_rcvmsg(node, item, lasthook);
break;
}
break;
default:
error = ng_hci_default_rcvmsg(node, item, lasthook);
break;
}
return (error);
} /* ng_hci_upper_rcvmsg */
/*
* Process data packet from the driver hook.
* We expect HCI events, ACL or SCO data packets.
*/
static int
ng_hci_drv_rcvdata(hook_p hook, item_p item)
{
ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
struct mbuf *m = NULL;
int error = 0;
/* Process packet */
m = NGI_M(item); /* item still has mbuf, just peeking */
m->m_flags |= M_PROTO1; /* mark as incoming packet */
NG_HCI_STAT_BYTES_RECV(unit->stat, m->m_pkthdr.len);
/* Give copy packet to RAW hook */
ng_hci_mtap(unit, m);
/*
* XXX XXX XXX
* Lower layer drivers MUST NOT send mbuf chain with empty mbuf at
* the beginning of the chain. HCI layer WILL NOT call m_pullup() here.
*/
switch (*mtod(m, u_int8_t *)) {
case NG_HCI_ACL_DATA_PKT:
NG_HCI_STAT_ACL_RECV(unit->stat);
if ((unit->state & NG_HCI_UNIT_READY) != NG_HCI_UNIT_READY ||
unit->acl == NULL || NG_HOOK_NOT_VALID(unit->acl)) {
NG_HCI_WARN(
"%s: %s - could not forward HCI ACL data packet, state=%#x, hook=%p\n",
__func__, NG_NODE_NAME(unit->node),
unit->state, unit->acl);
NG_FREE_ITEM(item);
} else
NG_FWD_ITEM_HOOK(error, item, unit->acl);
break;
case NG_HCI_SCO_DATA_PKT:
NG_HCI_STAT_SCO_RECV(unit->stat);
if ((unit->state & NG_HCI_UNIT_READY) != NG_HCI_UNIT_READY ||
unit->sco == NULL || NG_HOOK_NOT_VALID(unit->sco)) {
NG_HCI_INFO(
"%s: %s - could not forward HCI SCO data packet, state=%#x, hook=%p\n",
__func__, NG_NODE_NAME(unit->node),
unit->state, unit->sco);
NG_FREE_ITEM(item);
} else
NG_FWD_ITEM_HOOK(error, item, unit->sco);
break;
case NG_HCI_EVENT_PKT:
NG_HCI_STAT_EVNT_RECV(unit->stat);
/* Detach mbuf, discard item and process event */
NGI_GET_M(item, m);
NG_FREE_ITEM(item);
error = ng_hci_process_event(unit, m);
break;
default:
NG_HCI_ALERT(
"%s: %s - got unknown HCI packet type=%#x\n",
__func__, NG_NODE_NAME(unit->node),
*mtod(m, u_int8_t *));
NG_FREE_ITEM(item);
error = EINVAL;
break;
}
return (error);
} /* ng_hci_drv_rcvdata */
/*
* Process data packet from ACL upstream hook.
* We expect valid HCI ACL data packets.
*/
static int
ng_hci_acl_rcvdata(hook_p hook, item_p item)
{
ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
struct mbuf *m = NULL;
ng_hci_unit_con_p con = NULL;
u_int16_t con_handle;
int size, error = 0;
NG_HCI_BUFF_ACL_SIZE(unit->buffer, size);
/* Check packet */
NGI_GET_M(item, m);
if (*mtod(m, u_int8_t *) != NG_HCI_ACL_DATA_PKT) {
NG_HCI_ALERT(
"%s: %s - invalid HCI data packet type=%#x\n",
__func__, NG_NODE_NAME(unit->node),
*mtod(m, u_int8_t *));
error = EINVAL;
goto drop;
}
if (m->m_pkthdr.len < sizeof(ng_hci_acldata_pkt_t) ||
m->m_pkthdr.len > sizeof(ng_hci_acldata_pkt_t) + size) {
NG_HCI_ALERT(
"%s: %s - invalid HCI ACL data packet, len=%d, mtu=%d\n",
__func__, NG_NODE_NAME(unit->node),
m->m_pkthdr.len, size);
error = EMSGSIZE;
goto drop;
}
NG_HCI_M_PULLUP(m, sizeof(ng_hci_acldata_pkt_t));
if (m == NULL) {
error = ENOBUFS;
goto drop;
}
con_handle = NG_HCI_CON_HANDLE(le16toh(
mtod(m, ng_hci_acldata_pkt_t *)->con_handle));
size = le16toh(mtod(m, ng_hci_acldata_pkt_t *)->length);
if (m->m_pkthdr.len != sizeof(ng_hci_acldata_pkt_t) + size) {
NG_HCI_ALERT(
"%s: %s - invalid HCI ACL data packet size, len=%d, length=%d\n",
__func__, NG_NODE_NAME(unit->node),
m->m_pkthdr.len, size);
error = EMSGSIZE;
goto drop;
}
/* Queue packet */
con = ng_hci_con_by_handle(unit, con_handle);
if (con == NULL) {
NG_HCI_ERR(
"%s: %s - unexpected HCI ACL data packet. Connection does not exists, " \
"con_handle=%d\n", __func__, NG_NODE_NAME(unit->node), con_handle);
error = ENOENT;
goto drop;
}
if (con->link_type != NG_HCI_LINK_ACL) {
NG_HCI_ERR(
"%s: %s - unexpected HCI ACL data packet. Not ACL link, con_handle=%d, " \
"link_type=%d\n", __func__, NG_NODE_NAME(unit->node),
con_handle, con->link_type);
error = EINVAL;
goto drop;
}
if (con->state != NG_HCI_CON_OPEN) {
NG_HCI_ERR(
"%s: %s - unexpected HCI ACL data packet. Invalid connection state=%d, " \
"con_handle=%d\n", __func__, NG_NODE_NAME(unit->node),
con->state, con_handle);
error = EHOSTDOWN;
goto drop;
}
if (NG_BT_ITEMQ_FULL(&con->conq)) {
NG_HCI_ALERT(
"%s: %s - dropping HCI ACL data packet, con_handle=%d, len=%d, queue_len=%d\n",
__func__, NG_NODE_NAME(unit->node), con_handle,
m->m_pkthdr.len, NG_BT_ITEMQ_LEN(&con->conq));
NG_BT_ITEMQ_DROP(&con->conq);
error = ENOBUFS;
goto drop;
}
/* Queue item and schedule data transfer */
NGI_M(item) = m;
NG_BT_ITEMQ_ENQUEUE(&con->conq, item);
item = NULL;
m = NULL;
ng_hci_send_data(unit);
drop:
if (item != NULL)
NG_FREE_ITEM(item);
NG_FREE_M(m); /* NG_FREE_M() checks for m != NULL */
return (error);
} /* ng_hci_acl_rcvdata */
/*
* Process data packet from SCO upstream hook.
* We expect valid HCI SCO data packets
*/
static int
ng_hci_sco_rcvdata(hook_p hook, item_p item)
{
ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
struct mbuf *m = NULL;
ng_hci_unit_con_p con = NULL;
u_int16_t con_handle;
int size, error = 0;
NG_HCI_BUFF_SCO_SIZE(unit->buffer, size);
/* Check packet */
NGI_GET_M(item, m);
if (*mtod(m, u_int8_t *) != NG_HCI_SCO_DATA_PKT) {
NG_HCI_ALERT(
"%s: %s - invalid HCI data packet type=%#x\n",
__func__, NG_NODE_NAME(unit->node),
*mtod(m, u_int8_t *));
error = EINVAL;
goto drop;
}
if (m->m_pkthdr.len < sizeof(ng_hci_scodata_pkt_t) ||
m->m_pkthdr.len > sizeof(ng_hci_scodata_pkt_t) + size) {
NG_HCI_ALERT(
"%s: %s - invalid HCI SCO data packet, len=%d, mtu=%d\n",
__func__, NG_NODE_NAME(unit->node),
m->m_pkthdr.len, size);
error = EMSGSIZE;
goto drop;
}
NG_HCI_M_PULLUP(m, sizeof(ng_hci_scodata_pkt_t));
if (m == NULL) {
error = ENOBUFS;
goto drop;
}
con_handle = NG_HCI_CON_HANDLE(le16toh(
mtod(m, ng_hci_scodata_pkt_t *)->con_handle));
size = mtod(m, ng_hci_scodata_pkt_t *)->length;
if (m->m_pkthdr.len != sizeof(ng_hci_scodata_pkt_t) + size) {
NG_HCI_ALERT(
"%s: %s - invalid HCI SCO data packet size, len=%d, length=%d\n",
__func__, NG_NODE_NAME(unit->node),
m->m_pkthdr.len, size);
error = EMSGSIZE;
goto drop;
}
/* Queue packet */
con = ng_hci_con_by_handle(unit, con_handle);
if (con == NULL) {
NG_HCI_ERR(
"%s: %s - unexpected HCI SCO data packet. Connection does not exists, " \
"con_handle=%d\n", __func__, NG_NODE_NAME(unit->node), con_handle);
error = ENOENT;
goto drop;
}
if (con->link_type != NG_HCI_LINK_SCO) {
NG_HCI_ERR(
"%s: %s - unexpected HCI SCO data packet. Not SCO link, con_handle=%d, " \
"link_type=%d\n", __func__, NG_NODE_NAME(unit->node),
con_handle, con->link_type);
error = EINVAL;
goto drop;
}
if (con->state != NG_HCI_CON_OPEN) {
NG_HCI_ERR(
"%s: %s - unexpected HCI SCO data packet. Invalid connection state=%d, " \
"con_handle=%d\n", __func__, NG_NODE_NAME(unit->node),
con->state, con_handle);
error = EHOSTDOWN;
goto drop;
}
if (NG_BT_ITEMQ_FULL(&con->conq)) {
NG_HCI_ALERT(
"%s: %s - dropping HCI SCO data packet, con_handle=%d, len=%d, queue_len=%d\n",
__func__, NG_NODE_NAME(unit->node), con_handle,
m->m_pkthdr.len, NG_BT_ITEMQ_LEN(&con->conq));
NG_BT_ITEMQ_DROP(&con->conq);
error = ENOBUFS;
goto drop;
}
/* Queue item and schedule data transfer */
NGI_M(item) = m;
NG_BT_ITEMQ_ENQUEUE(&con->conq, item);
item = NULL;
m = NULL;
ng_hci_send_data(unit);
drop:
if (item != NULL)
NG_FREE_ITEM(item);
NG_FREE_M(m); /* NG_FREE_M() checks for m != NULL */
return (error);
} /* ng_hci_sco_rcvdata */
/*
* Process data packet from uptream RAW hook.
* We expect valid HCI command packets.
*/
static int
ng_hci_raw_rcvdata(hook_p hook, item_p item)
{
ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
struct mbuf *m = NULL;
int error = 0;
NGI_GET_M(item, m);
NG_FREE_ITEM(item);
/* Check packet */
if (*mtod(m, u_int8_t *) != NG_HCI_CMD_PKT) {
NG_HCI_ALERT(
"%s: %s - invalid HCI command packet type=%#x\n",
__func__, NG_NODE_NAME(unit->node),
*mtod(m, u_int8_t *));
error = EINVAL;
goto drop;
}
if (m->m_pkthdr.len < sizeof(ng_hci_cmd_pkt_t)) {
NG_HCI_ALERT(
"%s: %s - invalid HCI command packet len=%d\n",
__func__, NG_NODE_NAME(unit->node), m->m_pkthdr.len);
error = EMSGSIZE;
goto drop;
}
NG_HCI_M_PULLUP(m, sizeof(ng_hci_cmd_pkt_t));
if (m == NULL) {
error = ENOBUFS;
goto drop;
}
if (m->m_pkthdr.len !=
mtod(m, ng_hci_cmd_pkt_t *)->length + sizeof(ng_hci_cmd_pkt_t)) {
NG_HCI_ALERT(
"%s: %s - invalid HCI command packet size, len=%d, length=%d\n",
__func__, NG_NODE_NAME(unit->node), m->m_pkthdr.len,
mtod(m, ng_hci_cmd_pkt_t *)->length);
error = EMSGSIZE;
goto drop;
}
if (mtod(m, ng_hci_cmd_pkt_t *)->opcode == 0) {
NG_HCI_ALERT(
"%s: %s - invalid HCI command opcode\n",
__func__, NG_NODE_NAME(unit->node));
error = EINVAL;
goto drop;
}
if (NG_BT_MBUFQ_FULL(&unit->cmdq)) {
NG_HCI_ALERT(
"%s: %s - dropping HCI command packet, len=%d, queue_len=%d\n",
__func__, NG_NODE_NAME(unit->node), m->m_pkthdr.len,
NG_BT_MBUFQ_LEN(&unit->cmdq));
NG_BT_MBUFQ_DROP(&unit->cmdq);
error = ENOBUFS;
goto drop;
}
/* Queue and send command */
NG_BT_MBUFQ_ENQUEUE(&unit->cmdq, m);
m = NULL;
if (!(unit->state & NG_HCI_UNIT_COMMAND_PENDING))
error = ng_hci_send_command(unit);
drop:
NG_FREE_M(m); /* NG_FREE_M() checks for m != NULL */
return (error);
} /* ng_hci_raw_rcvdata */