int
ng_l2cap_lp_con_req(ng_l2cap_p l2cap, bdaddr_p bdaddr)
{
struct ng_mesg *msg = NULL;
ng_hci_lp_con_req_ep *ep = NULL;
ng_l2cap_con_p con = NULL;
int error = 0;
/* Verify that we DO NOT have connection to the remote unit */
con = ng_l2cap_con_by_addr(l2cap, bdaddr);
if (con != NULL) {
NG_L2CAP_ALERT(
"%s: %s - unexpected LP_ConnectReq event. " \
"Connection already exists, state=%d, con_handle=%d\n",
__func__, NG_NODE_NAME(l2cap->node), con->state,
con->con_handle);
return (EEXIST);
}
/* Check if lower layer protocol is still connected */
if (l2cap->hci == NULL || NG_HOOK_NOT_VALID(l2cap->hci)) {
NG_L2CAP_ERR(
"%s: %s - hook \"%s\" is not connected or valid\n",
__func__, NG_NODE_NAME(l2cap->node), NG_L2CAP_HOOK_HCI);
return (ENOTCONN);
}
/* Create and intialize new connection descriptor */
con = ng_l2cap_new_con(l2cap, bdaddr);
if (con == NULL)
return (ENOMEM);
/* Create and send LP_ConnectReq event */
NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_LP_CON_REQ,
sizeof(*ep), M_NOWAIT);
if (msg == NULL) {
ng_l2cap_free_con(con);
return (ENOMEM);
}
ep = (ng_hci_lp_con_req_ep *) (msg->data);
bcopy(bdaddr, &ep->bdaddr, sizeof(ep->bdaddr));
ep->link_type = NG_HCI_LINK_ACL;
con->flags |= NG_L2CAP_CON_OUTGOING;
con->state = NG_L2CAP_W4_LP_CON_CFM;
ng_l2cap_lp_timeout(con);
NG_SEND_MSG_HOOK(error, l2cap->node, msg, l2cap->hci, 0);
if (error != 0) {
if (ng_l2cap_lp_untimeout(con) == 0)
ng_l2cap_free_con(con);
/*
* Do not free connection if ng_l2cap_lp_untimeout() failed
* let timeout handler deal with it. Always return error to
* the caller.
*/
}
return (error);
} /* ng_l2cap_lp_con_req */
int
ng_l2cap_lp_con_ind(ng_l2cap_p l2cap, struct ng_mesg *msg)
{
ng_hci_lp_con_ind_ep *ep = NULL;
ng_hci_lp_con_rsp_ep *rp = NULL;
struct ng_mesg *rsp = NULL;
ng_l2cap_con_p con = NULL;
int error = 0;
/* Check message */
if (msg->header.arglen != sizeof(*ep)) {
NG_L2CAP_ALERT(
"%s: %s - invalid LP_ConnectInd message size\n",
__func__, NG_NODE_NAME(l2cap->node));
return (EMSGSIZE);
}
ep = (ng_hci_lp_con_ind_ep *) (msg->data);
/* Make sure we have only one connection to the remote unit */
con = ng_l2cap_con_by_addr(l2cap, &ep->bdaddr);
if (con != NULL) {
NG_L2CAP_ALERT(
"%s: %s - unexpected LP_ConnectInd event. " \
"Connection already exists, state=%d, con_handle=%d\n",
__func__, NG_NODE_NAME(l2cap->node), con->state,
con->con_handle);
return (EEXIST);
}
/* Check if lower layer protocol is still connected */
if (l2cap->hci == NULL || NG_HOOK_NOT_VALID(l2cap->hci)) {
NG_L2CAP_ERR(
"%s: %s - hook \"%s\" is not connected or valid",
__func__, NG_NODE_NAME(l2cap->node), NG_L2CAP_HOOK_HCI);
return (ENOTCONN);
}
/* Create and intialize new connection descriptor */
con = ng_l2cap_new_con(l2cap, &ep->bdaddr);
if (con == NULL)
return (ENOMEM);
/* Create and send LP_ConnectRsp event */
NG_MKMESSAGE(rsp, NGM_HCI_COOKIE, NGM_HCI_LP_CON_RSP,
sizeof(*rp), M_NOWAIT);
if (rsp == NULL) {
ng_l2cap_free_con(con);
return (ENOMEM);
}
rp = (ng_hci_lp_con_rsp_ep *)(rsp->data);
rp->status = 0x00; /* accept connection */
rp->link_type = NG_HCI_LINK_ACL;
bcopy(&ep->bdaddr, &rp->bdaddr, sizeof(rp->bdaddr));
con->state = NG_L2CAP_W4_LP_CON_CFM;
ng_l2cap_lp_timeout(con);
NG_SEND_MSG_HOOK(error, l2cap->node, rsp, l2cap->hci, 0);
if (error != 0) {
if (ng_l2cap_lp_untimeout(con) == 0)
ng_l2cap_free_con(con);
/*
* Do not free connection if ng_l2cap_lp_untimeout() failed
* let timeout handler deal with it. Always return error to
* the caller.
*/
}
return (error);
} /* ng_l2cap_lp_con_ind */
int
ng_l2cap_l2ca_clt_receive(ng_l2cap_con_p con)
{
struct _clt_pkt {
ng_l2cap_hdr_t h;
ng_l2cap_clt_hdr_t c_h;
} __attribute__ ((packed)) *hdr = NULL;
ng_l2cap_p l2cap = con->l2cap;
int length, error = 0;
NG_L2CAP_M_PULLUP(con->rx_pkt, sizeof(*hdr));
if (con->rx_pkt == NULL)
return (ENOBUFS);
hdr = mtod(con->rx_pkt, struct _clt_pkt *);
/* Check packet */
length = con->rx_pkt->m_pkthdr.len - sizeof(*hdr);
if (length < 0) {
NG_L2CAP_ERR(
"%s: %s - invalid L2CAP CLT data packet. Packet too small, length=%d\n",
__func__, NG_NODE_NAME(l2cap->node), length);
error = EMSGSIZE;
goto drop;
}
/* Check payload size against CLT MTU */
if (length > NG_L2CAP_MTU_DEFAULT) {
NG_L2CAP_ERR(
"%s: %s - invalid L2CAP CLT data packet. Packet too big, length=%d, mtu=%d\n",
__func__, NG_NODE_NAME(l2cap->node), length,
NG_L2CAP_MTU_DEFAULT);
error = EMSGSIZE;
goto drop;
}
hdr->c_h.psm = le16toh(hdr->c_h.psm);
/*
* If we got here then everything looks good and we can sent packet
* to the upper layer protocol.
*/
/* Select upstream hook based on PSM */
switch (hdr->c_h.psm) {
case NG_L2CAP_PSM_SDP:
if (l2cap->flags & NG_L2CAP_CLT_SDP_DISABLED)
goto drop;
break;
case NG_L2CAP_PSM_RFCOMM:
if (l2cap->flags & NG_L2CAP_CLT_RFCOMM_DISABLED)
goto drop;
break;
case NG_L2CAP_PSM_TCP:
if (l2cap->flags & NG_L2CAP_CLT_TCP_DISABLED)
goto drop;
break;
}
/* Check if upstream hook is connected and valid */
if (l2cap->l2c == NULL || NG_HOOK_NOT_VALID(l2cap->l2c)) {
NG_L2CAP_ERR(
"%s: %s - unable to send L2CAP CLT data packet. " \
"Hook is not connected or valid, psm=%d\n",
__func__, NG_NODE_NAME(l2cap->node), hdr->c_h.psm);
error = ENOTCONN;
goto drop;
}
NG_SEND_DATA_ONLY(error, l2cap->l2c, con->rx_pkt);
con->rx_pkt = NULL;
drop:
NG_FREE_M(con->rx_pkt); /* checks for != NULL */
return (error);
} /* ng_l2cap_l2ca_clt_receive */
int
ng_l2cap_lp_receive(ng_l2cap_p l2cap, struct mbuf *m)
{
ng_hci_acldata_pkt_t *acl_hdr = NULL;
ng_l2cap_hdr_t *l2cap_hdr = NULL;
ng_l2cap_con_p con = NULL;
u_int16_t con_handle, length, pb;
int error = 0;
/* Check ACL data packet */
if (m->m_pkthdr.len < sizeof(*acl_hdr)) {
NG_L2CAP_ERR(
"%s: %s - invalid ACL data packet. Packet too small, length=%d\n",
__func__, NG_NODE_NAME(l2cap->node), m->m_pkthdr.len);
error = EMSGSIZE;
goto drop;
}
/* Strip ACL data packet header */
NG_L2CAP_M_PULLUP(m, sizeof(*acl_hdr));
if (m == NULL)
return (ENOBUFS);
acl_hdr = mtod(m, ng_hci_acldata_pkt_t *);
m_adj(m, sizeof(*acl_hdr));
/* Get ACL connection handle, PB flag and payload length */
acl_hdr->con_handle = le16toh(acl_hdr->con_handle);
con_handle = NG_HCI_CON_HANDLE(acl_hdr->con_handle);
pb = NG_HCI_PB_FLAG(acl_hdr->con_handle);
length = le16toh(acl_hdr->length);
NG_L2CAP_INFO(
"%s: %s - got ACL data packet, con_handle=%d, PB=%#x, length=%d\n",
__func__, NG_NODE_NAME(l2cap->node), con_handle, pb, length);
/* Get connection descriptor */
con = ng_l2cap_con_by_handle(l2cap, con_handle);
if (con == NULL) {
NG_L2CAP_ERR(
"%s: %s - unexpected ACL data packet. " \
"Connection does not exist, con_handle=%d\n",
__func__, NG_NODE_NAME(l2cap->node), con_handle);
error = ENOENT;
goto drop;
}
/* Verify connection state */
if (con->state != NG_L2CAP_CON_OPEN) {
NG_L2CAP_ERR(
"%s: %s - unexpected ACL data packet. Invalid connection state=%d\n",
__func__, NG_NODE_NAME(l2cap->node), con->state);
error = EHOSTDOWN;
goto drop;
}
/* Process packet */
if (pb == NG_HCI_PACKET_START) {
if (con->rx_pkt != NULL) {
NG_L2CAP_ERR(
"%s: %s - dropping incomplete L2CAP packet, got %d bytes, want %d bytes\n",
__func__, NG_NODE_NAME(l2cap->node),
con->rx_pkt->m_pkthdr.len, con->rx_pkt_len);
NG_FREE_M(con->rx_pkt);
con->rx_pkt_len = 0;
}
/* Get L2CAP header */
if (m->m_pkthdr.len < sizeof(*l2cap_hdr)) {
NG_L2CAP_ERR(
"%s: %s - invalid L2CAP packet start fragment. Packet too small, length=%d\n",
__func__, NG_NODE_NAME(l2cap->node),
m->m_pkthdr.len);
error = EMSGSIZE;
goto drop;
}
NG_L2CAP_M_PULLUP(m, sizeof(*l2cap_hdr));
if (m == NULL)
return (ENOBUFS);
l2cap_hdr = mtod(m, ng_l2cap_hdr_t *);
NG_L2CAP_INFO(
"%s: %s - staring new L2CAP packet, con_handle=%d, length=%d\n",
__func__, NG_NODE_NAME(l2cap->node), con_handle,
le16toh(l2cap_hdr->length));
/* Start new L2CAP packet */
con->rx_pkt = m;
con->rx_pkt_len = le16toh(l2cap_hdr->length)+sizeof(*l2cap_hdr);
} else if (pb == NG_HCI_PACKET_FRAGMENT) {
int
ng_l2cap_l2ca_write_req(ng_l2cap_p l2cap, struct mbuf *m)
{
ng_l2cap_l2ca_hdr_t *l2ca_hdr = NULL;
ng_l2cap_chan_p ch = NULL;
ng_l2cap_cmd_p cmd = NULL;
int error = 0;
u_int32_t token = 0;
/* Make sure we can access L2CA data packet header */
if (m->m_pkthdr.len < sizeof(*l2ca_hdr)) {
NG_L2CAP_ERR(
"%s: %s - L2CA Data packet too small, len=%d\n",
__func__,NG_NODE_NAME(l2cap->node),m->m_pkthdr.len);
error = EMSGSIZE;
goto drop;
}
/* Get L2CA data packet header */
NG_L2CAP_M_PULLUP(m, sizeof(*l2ca_hdr));
if (m == NULL)
return (ENOBUFS);
l2ca_hdr = mtod(m, ng_l2cap_l2ca_hdr_t *);
token = l2ca_hdr->token;
m_adj(m, sizeof(*l2ca_hdr));
/* Verify payload size */
if (l2ca_hdr->length != m->m_pkthdr.len) {
NG_L2CAP_ERR(
"%s: %s - invalid L2CA Data packet. " \
"Payload length does not match, length=%d, len=%d\n",
__func__, NG_NODE_NAME(l2cap->node), l2ca_hdr->length,
m->m_pkthdr.len);
error = EMSGSIZE;
goto drop;
}
/* Check channel ID */
if (l2ca_hdr->lcid < NG_L2CAP_FIRST_CID) {
NG_L2CAP_ERR(
"%s: %s - invalid L2CA Data packet. Inavlid channel ID, cid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), l2ca_hdr->lcid);
error = EINVAL;
goto drop;
}
/* Verify that we have the channel and make sure it is open */
ch = ng_l2cap_chan_by_scid(l2cap, l2ca_hdr->lcid);
if (ch == NULL) {
NG_L2CAP_ERR(
"%s: %s - invalid L2CA Data packet. Channel does not exist, cid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), l2ca_hdr->lcid);
error = ENOENT;
goto drop;
}
if (ch->state != NG_L2CAP_OPEN) {
NG_L2CAP_ERR(
"%s: %s - invalid L2CA Data packet. Invalid channel state, scid=%d, state=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ch->scid,
ch->state);
error = EHOSTDOWN;
goto drop; /* XXX not always - re-configure */
}
/* Create L2CAP command descriptor */
cmd = ng_l2cap_new_cmd(ch->con, ch, 0, NGM_L2CAP_L2CA_WRITE, token);
if (cmd == NULL) {
error = ENOMEM;
goto drop;
}
/* Attach data packet and link command to the queue */
cmd->aux = m;
ng_l2cap_link_cmd(ch->con, cmd);
ng_l2cap_lp_deliver(ch->con);
return (error);
drop:
NG_FREE_M(m);
return (error);
} /* ng_l2cap_l2ca_write_req */
int
ng_l2cap_l2ca_receive(ng_l2cap_con_p con)
{
ng_l2cap_p l2cap = con->l2cap;
ng_l2cap_hdr_t *hdr = NULL;
ng_l2cap_chan_p ch = NULL;
int error = 0;
NG_L2CAP_M_PULLUP(con->rx_pkt, sizeof(*hdr));
if (con->rx_pkt == NULL)
return (ENOBUFS);
hdr = mtod(con->rx_pkt, ng_l2cap_hdr_t *);
/* Check channel */
ch = ng_l2cap_chan_by_scid(l2cap, hdr->dcid);
if (ch == NULL) {
NG_L2CAP_ERR(
"%s: %s - unexpected L2CAP data packet. Channel does not exist, cid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), hdr->dcid);
error = ENOENT;
goto drop;
}
/* Check channel state */
if (ch->state != NG_L2CAP_OPEN) {
NG_L2CAP_WARN(
"%s: %s - unexpected L2CAP data packet. " \
"Invalid channel state, cid=%d, state=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ch->scid,
ch->state);
error = EHOSTDOWN; /* XXX not always - re-configuration */
goto drop;
}
/* Check payload size and channel's MTU */
if (hdr->length > ch->imtu) {
NG_L2CAP_ERR(
"%s: %s - invalid L2CAP data packet. " \
"Packet too big, length=%d, imtu=%d, cid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), hdr->length,
ch->imtu, ch->scid);
error = EMSGSIZE;
goto drop;
}
/*
* If we got here then everything looks good and we can sent packet
* to the upper layer protocol.
*/
/* Check if upstream hook is connected and valid */
if (l2cap->l2c == NULL || NG_HOOK_NOT_VALID(l2cap->l2c)) {
NG_L2CAP_ERR(
"%s: %s - unable to send L2CAP data packet. " \
"Hook is not connected or valid, psm=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ch->psm);
error = ENOTCONN;
goto drop;
}
NG_SEND_DATA_ONLY(error, l2cap->l2c, con->rx_pkt);
con->rx_pkt = NULL;
drop:
NG_FREE_M(con->rx_pkt); /* checks for != NULL */
return (error);
} /* ng_l2cap_receive */
int
ng_l2cap_l2ca_cfg_rsp_req(ng_l2cap_p l2cap, struct ng_mesg *msg)
{
ng_l2cap_l2ca_cfg_rsp_ip *ip = NULL;
ng_l2cap_chan_p ch = NULL;
ng_l2cap_cmd_p cmd = NULL;
struct mbuf *opt = NULL;
u_int16_t *mtu = NULL;
ng_l2cap_flow_p flow = NULL;
int error = 0;
/* Check message */
if (msg->header.arglen != sizeof(*ip)) {
NG_L2CAP_ALERT(
"%s: %s - invalid L2CA_ConfigRsp request message size, size=%d\n",
__func__, NG_NODE_NAME(l2cap->node),
msg->header.arglen);
error = EMSGSIZE;
goto out;
}
ip = (ng_l2cap_l2ca_cfg_rsp_ip *)(msg->data);
/* Check if we have this channel */
ch = ng_l2cap_chan_by_scid(l2cap, ip->lcid);
if (ch == NULL) {
NG_L2CAP_ERR(
"%s: %s - unexpected L2CA_ConfigRsp request message. " \
"Channel does not exist, lcid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ip->lcid);
error = ENOENT;
goto out;
}
/* Check channel state */
if (ch->state != NG_L2CAP_CONFIG) {
NG_L2CAP_ERR(
"%s: %s - unexpected L2CA_ConfigRsp request message. " \
"Invalid channel state, state=%d, lcid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ch->state,
ch->scid);
error = EINVAL;
goto out;
}
/* Set channel settings */
if (ip->omtu != ch->omtu) {
ch->omtu = ip->omtu;
mtu = &ch->omtu;
}
if (bcmp(&ip->iflow, &ch->iflow, sizeof(ch->iflow)) != 0) {
bcopy(&ip->iflow, &ch->iflow, sizeof(ch->iflow));
flow = &ch->iflow;
}
if (mtu != NULL || flow != NULL) {
_ng_l2cap_build_cfg_options(opt, mtu, NULL, flow);
if (opt == NULL) {
error = ENOBUFS;
goto out;
}
}
/* Create L2CAP command */
cmd = ng_l2cap_new_cmd(ch->con, ch, ch->ident, NG_L2CAP_CFG_RSP,
msg->header.token);
if (cmd == NULL) {
NG_FREE_M(opt);
error = ENOMEM;
goto out;
}
_ng_l2cap_cfg_rsp(cmd->aux,cmd->ident,ch->dcid,0,NG_L2CAP_SUCCESS,opt);
if (cmd->aux == NULL) {
ng_l2cap_free_cmd(cmd);
error = ENOBUFS;
goto out;
}
/* XXX FIXME - not here ??? */
ch->cfg_state |= NG_L2CAP_CFG_OUT;
if (ch->cfg_state == NG_L2CAP_CFG_BOTH)
ch->state = NG_L2CAP_OPEN;
/* Link command to the queue */
ng_l2cap_link_cmd(ch->con, cmd);
ng_l2cap_lp_deliver(ch->con);
out:
return (error);
} /* ng_l2cap_l2ca_cfg_rsp_req */
int
ng_l2cap_l2ca_con_req(ng_l2cap_p l2cap, struct ng_mesg *msg)
{
ng_l2cap_l2ca_con_ip *ip = NULL;
ng_l2cap_con_p con = NULL;
ng_l2cap_chan_p ch = NULL;
ng_l2cap_cmd_p cmd = NULL;
int error = 0;
/* Check message */
if (msg->header.arglen != sizeof(*ip)) {
NG_L2CAP_ALERT(
"%s: %s - invalid L2CA_Connect request message size, size=%d\n",
__func__, NG_NODE_NAME(l2cap->node),
msg->header.arglen);
error = EMSGSIZE;
goto out;
}
ip = (ng_l2cap_l2ca_con_ip *)(msg->data);
/* Check if we have connection to the remote unit */
con = ng_l2cap_con_by_addr(l2cap, &ip->bdaddr);
if (con == NULL) {
/* Submit LP_ConnectReq to the lower layer */
error = ng_l2cap_lp_con_req(l2cap, &ip->bdaddr);
if (error != 0) {
NG_L2CAP_ERR(
"%s: %s - unable to send LP_ConnectReq message, error=%d\n",
__func__, NG_NODE_NAME(l2cap->node), error);
goto out;
}
/* This should not fail */
con = ng_l2cap_con_by_addr(l2cap, &ip->bdaddr);
KASSERT((con != NULL),
("%s: %s - could not find connection!\n", __func__, NG_NODE_NAME(l2cap->node)));
}
/*
* Create new empty channel descriptor. In case of any failure do
* not touch connection descriptor.
*/
ch = ng_l2cap_new_chan(l2cap, con, ip->psm);
if (ch == NULL) {
error = ENOMEM;
goto out;
}
/* Now create L2CAP_ConnectReq command */
cmd = ng_l2cap_new_cmd(ch->con, ch, ng_l2cap_get_ident(con),
NG_L2CAP_CON_REQ, msg->header.token);
if (cmd == NULL) {
ng_l2cap_free_chan(ch);
error = ENOMEM;
goto out;
}
if (cmd->ident == NG_L2CAP_NULL_IDENT) {
ng_l2cap_free_cmd(cmd);
ng_l2cap_free_chan(ch);
error = EIO;
goto out;
}
/* Create L2CAP command packet */
_ng_l2cap_con_req(cmd->aux, cmd->ident, ch->psm, ch->scid);
if (cmd->aux == NULL) {
ng_l2cap_free_cmd(cmd);
ng_l2cap_free_chan(ch);
error = ENOBUFS;
goto out;
}
ch->state = NG_L2CAP_W4_L2CAP_CON_RSP;
/* Link command to the queue */
ng_l2cap_link_cmd(ch->con, cmd);
ng_l2cap_lp_deliver(ch->con);
out:
return (error);
} /* ng_l2cap_l2ca_con_req */
int
ng_l2cap_l2ca_cfg_req(ng_l2cap_p l2cap, struct ng_mesg *msg)
{
ng_l2cap_l2ca_cfg_ip *ip = NULL;
ng_l2cap_chan_p ch = NULL;
ng_l2cap_cmd_p cmd = NULL;
struct mbuf *opt = NULL;
u_int16_t *mtu = NULL, *flush_timo = NULL;
ng_l2cap_flow_p flow = NULL;
int error = 0;
/* Check message */
if (msg->header.arglen != sizeof(*ip)) {
NG_L2CAP_ALERT(
"%s: %s - Invalid L2CA_Config request message size, size=%d\n",
__func__, NG_NODE_NAME(l2cap->node),
msg->header.arglen);
error = EMSGSIZE;
goto out;
}
ip = (ng_l2cap_l2ca_cfg_ip *)(msg->data);
/* Check if we have this channel */
ch = ng_l2cap_chan_by_scid(l2cap, ip->lcid);
if (ch == NULL) {
NG_L2CAP_ERR(
"%s: %s - unexpected L2CA_Config request message. " \
"Channel does not exist, lcid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ip->lcid);
error = ENOENT;
goto out;
}
/* Check channel state */
if (ch->state != NG_L2CAP_OPEN && ch->state != NG_L2CAP_CONFIG) {
NG_L2CAP_ERR(
"%s: %s - unexpected L2CA_Config request message. " \
"Invalid channel state, state=%d, lcid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ch->state,
ch->scid);
error = EINVAL;
goto out;
}
/* Set requested channel configuration options */
ch->imtu = ip->imtu;
bcopy(&ip->oflow, &ch->oflow, sizeof(ch->oflow));
ch->flush_timo = ip->flush_timo;
ch->link_timo = ip->link_timo;
/* Compare channel settings with defaults */
if (ch->imtu != NG_L2CAP_MTU_DEFAULT)
mtu = &ch->imtu;
if (ch->flush_timo != NG_L2CAP_FLUSH_TIMO_DEFAULT)
flush_timo = &ch->flush_timo;
if (bcmp(ng_l2cap_default_flow(), &ch->oflow, sizeof(ch->oflow)) != 0)
flow = &ch->oflow;
/* Create configuration options */
_ng_l2cap_build_cfg_options(opt, mtu, flush_timo, flow);
if (opt == NULL) {
error = ENOBUFS;
goto out;
}
/* Create L2CAP command descriptor */
cmd = ng_l2cap_new_cmd(ch->con, ch, ng_l2cap_get_ident(ch->con),
NG_L2CAP_CFG_REQ, msg->header.token);
if (cmd == NULL) {
NG_FREE_M(opt);
error = ENOMEM;
goto out;
}
if (cmd->ident == NG_L2CAP_NULL_IDENT) {
ng_l2cap_free_cmd(cmd);
NG_FREE_M(opt);
error = EIO;
goto out;
}
/* Create L2CAP command packet */
_ng_l2cap_cfg_req(cmd->aux, cmd->ident, ch->dcid, 0, opt);
if (cmd->aux == NULL) {
ng_l2cap_free_cmd(cmd);
error = ENOBUFS;
goto out;
}
/* Adjust channel state for re-configuration */
if (ch->state == NG_L2CAP_OPEN) {
ch->state = NG_L2CAP_CONFIG;
ch->cfg_state = 0;
}
/* Link command to the queue */
ng_l2cap_link_cmd(ch->con, cmd);
ng_l2cap_lp_deliver(ch->con);
out:
return (error);
} /* ng_l2cap_l2ca_cfg_req */
int
ng_l2cap_l2ca_con_rsp_req(ng_l2cap_p l2cap, struct ng_mesg *msg)
{
ng_l2cap_l2ca_con_rsp_ip *ip = NULL;
ng_l2cap_con_p con = NULL;
ng_l2cap_chan_p ch = NULL;
ng_l2cap_cmd_p cmd = NULL;
u_int16_t dcid;
int error = 0;
/* Check message */
if (msg->header.arglen != sizeof(*ip)) {
NG_L2CAP_ALERT(
"%s: %s - invalid L2CA_ConnectRsp request message size, size=%d\n",
__func__, NG_NODE_NAME(l2cap->node),
msg->header.arglen);
error = EMSGSIZE;
goto out;
}
ip = (ng_l2cap_l2ca_con_rsp_ip *)(msg->data);
/* Check if we have this channel */
ch = ng_l2cap_chan_by_scid(l2cap, ip->lcid);
if (ch == NULL) {
NG_L2CAP_ALERT(
"%s: %s - unexpected L2CA_ConnectRsp request message. " \
"Channel does not exist, lcid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ip->lcid);
error = ENOENT;
goto out;
}
/* Check channel state */
if (ch->state != NG_L2CAP_W4_L2CA_CON_RSP) {
NG_L2CAP_ERR(
"%s: %s - unexpected L2CA_ConnectRsp request message. " \
"Invalid channel state, state=%d, lcid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ch->state,
ip->lcid);
error = EINVAL;
goto out;
}
dcid = ch->dcid;
con = ch->con;
/*
* Now we are pretty much sure it is our response. So create and send
* L2CAP_ConnectRsp message to our peer.
*/
if (ch->ident != ip->ident)
NG_L2CAP_WARN(
"%s: %s - channel ident and response ident do not match, scid=%d, ident=%d. " \
"Will use response ident=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ch->scid,
ch->ident, ip->ident);
/* Check result */
switch (ip->result) {
case NG_L2CAP_SUCCESS:
ch->state = NG_L2CAP_CONFIG;
ch->cfg_state = 0;
break;
case NG_L2CAP_PENDING:
break;
default:
ng_l2cap_free_chan(ch);
ch = NULL;
break;
}
/* Create L2CAP command */
cmd = ng_l2cap_new_cmd(con, ch, ip->ident, NG_L2CAP_CON_RSP,
msg->header.token);
if (cmd == NULL) {
if (ch != NULL)
ng_l2cap_free_chan(ch);
error = ENOMEM;
goto out;
}
_ng_l2cap_con_rsp(cmd->aux, cmd->ident, ip->lcid, dcid,
ip->result, ip->status);
if (cmd->aux == NULL) {
if (ch != NULL)
ng_l2cap_free_chan(ch);
ng_l2cap_free_cmd(cmd);
error = ENOBUFS;
goto out;
}
/* Link command to the queue */
ng_l2cap_link_cmd(con, cmd);
ng_l2cap_lp_deliver(con);
out:
return (error);
} /* ng_l2cap_l2ca_con_rsp_req */
int
ng_l2cap_l2ca_enable_clt(ng_l2cap_p l2cap, struct ng_mesg *msg)
{
ng_l2cap_l2ca_enable_clt_ip *ip = NULL;
int error = 0;
#if 0
* ng_l2cap_l2ca_enable_clt_op *op = NULL;
* u_int16_t result;
* u_int32_t token;
#endif
/* Check message */
if (msg->header.arglen != sizeof(*ip)) {
NG_L2CAP_ALERT(
"%s: %s - invalid L2CA_EnableCLT message size, size=%d\n",
__func__, NG_NODE_NAME(l2cap->node),
msg->header.arglen);
return (EMSGSIZE);
}
/* Process request */
ip = (ng_l2cap_l2ca_enable_clt_ip *) (msg->data);
#if 0
* result = NG_L2CAP_SUCCESS;
#endif
switch (ip->psm)
{
case 0:
/* Special case: disable/enable all PSM */
if (ip->enable)
l2cap->flags &= ~(NG_L2CAP_CLT_SDP_DISABLED |
NG_L2CAP_CLT_RFCOMM_DISABLED |
NG_L2CAP_CLT_TCP_DISABLED);
else
l2cap->flags |= (NG_L2CAP_CLT_SDP_DISABLED |
NG_L2CAP_CLT_RFCOMM_DISABLED |
NG_L2CAP_CLT_TCP_DISABLED);
break;
case NG_L2CAP_PSM_SDP:
if (ip->enable)
l2cap->flags &= ~NG_L2CAP_CLT_SDP_DISABLED;
else
l2cap->flags |= NG_L2CAP_CLT_SDP_DISABLED;
break;
case NG_L2CAP_PSM_RFCOMM:
if (ip->enable)
l2cap->flags &= ~NG_L2CAP_CLT_RFCOMM_DISABLED;
else
l2cap->flags |= NG_L2CAP_CLT_RFCOMM_DISABLED;
break;
case NG_L2CAP_PSM_TCP:
if (ip->enable)
l2cap->flags &= ~NG_L2CAP_CLT_TCP_DISABLED;
else
l2cap->flags |= NG_L2CAP_CLT_TCP_DISABLED;
break;
default:
NG_L2CAP_ERR(
"%s: %s - unsupported PSM=%d\n", __func__, NG_NODE_NAME(l2cap->node), ip->psm);
#if 0
* result = NG_L2CAP_PSM_NOT_SUPPORTED;
#endif
error = ENOTSUP;
break;
}
#if 0
* /* Create and send response message */
* token = msg->header.token;
* NG_FREE_MSG(msg);
* NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_ENABLE_CLT,
* sizeof(*op), M_NOWAIT);
* if (msg == NULL)
* error = ENOMEM;
* else {
* msg->header.token = token;
* msg->header.flags |= NGF_RESP;
*
* op = (ng_l2cap_l2ca_enable_clt_op *)(msg->data);
* op->result = result;
* }
*
* /* Send response to control hook */
* if (l2cap->ctl != NULL && NG_HOOK_IS_VALID(l2cap->ctl))
* NG_SEND_MSG_HOOK(error, l2cap->node, msg, l2cap->ctl, 0);
#endif
return (error);
} /* ng_l2cap_l2ca_enable_clt */
int
ng_l2cap_l2ca_get_info_req(ng_l2cap_p l2cap, struct ng_mesg *msg)
{
ng_l2cap_l2ca_get_info_ip *ip = NULL;
ng_l2cap_con_p con = NULL;
ng_l2cap_cmd_p cmd = NULL;
int error = 0;
/* Verify message */
if (msg->header.arglen != sizeof(*ip)) {
NG_L2CAP_ALERT(
"%s: %s - invalid L2CA_GetInfo request message size, size=%d\n",
__func__, NG_NODE_NAME(l2cap->node),
msg->header.arglen);
error = EMSGSIZE;
goto out;
}
ip = (ng_l2cap_l2ca_get_info_ip *)(msg->data);
/* Check if we have connection to the unit */
con = ng_l2cap_con_by_addr(l2cap, &ip->bdaddr);
if (con == NULL) {
/* Submit LP_ConnectReq to the lower layer */
error = ng_l2cap_lp_con_req(l2cap, &ip->bdaddr);
if (error != 0) {
NG_L2CAP_ERR(
"%s: %s - unable to send LP_ConnectReq message, error=%d\n",
__func__, NG_NODE_NAME(l2cap->node), error);
goto out;
}
/* This should not fail */
con = ng_l2cap_con_by_addr(l2cap, &ip->bdaddr);
KASSERT((con != NULL),
("%s: %s - could not find connection!\n", __func__, NG_NODE_NAME(l2cap->node)));
}
/* Create L2CAP command descriptor */
cmd = ng_l2cap_new_cmd(con, NULL, ng_l2cap_get_ident(con),
NG_L2CAP_INFO_REQ, msg->header.token);
if (cmd == NULL) {
error = ENOMEM;
goto out;
}
if (cmd->ident == NG_L2CAP_NULL_IDENT) {
ng_l2cap_free_cmd(cmd);
error = EIO;
goto out;
}
/* Create L2CAP command packet */
_ng_l2cap_info_req(cmd->aux, cmd->ident, ip->info_type);
if (cmd->aux == NULL) {
ng_l2cap_free_cmd(cmd);
error = ENOBUFS;
goto out;
}
/* Link command to the queue */
ng_l2cap_link_cmd(con, cmd);
ng_l2cap_lp_deliver(con);
out:
return (error);
} /* ng_l2cap_l2ca_get_info_req */
int
ng_l2cap_l2ca_discon_req(ng_l2cap_p l2cap, struct ng_mesg *msg)
{
ng_l2cap_l2ca_discon_ip *ip = NULL;
ng_l2cap_chan_p ch = NULL;
ng_l2cap_cmd_p cmd = NULL;
int error = 0;
/* Check message */
if (msg->header.arglen != sizeof(*ip)) {
NG_L2CAP_ALERT(
"%s: %s - invalid L2CA_Disconnect request message size, size=%d\n",
__func__, NG_NODE_NAME(l2cap->node),
msg->header.arglen);
error = EMSGSIZE;
goto out;
}
ip = (ng_l2cap_l2ca_discon_ip *)(msg->data);
/* Check if we have this channel */
ch = ng_l2cap_chan_by_scid(l2cap, ip->lcid);
if (ch == NULL) {
NG_L2CAP_ERR(
"%s: %s - unexpected L2CA_Disconnect request message. " \
"Channel does not exist, lcid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ip->lcid);
error = ENOENT;
goto out;
}
/* Check channel state */
if (ch->state != NG_L2CAP_CONFIG && ch->state != NG_L2CAP_OPEN &&
ch->state != NG_L2CAP_W4_L2CAP_DISCON_RSP) {
NG_L2CAP_ERR(
"%s: %s - unexpected L2CA_Disconnect request message. " \
"Invalid channel state, state=%d, lcid=%d\n",
__func__, NG_NODE_NAME(l2cap->node), ch->state,
ch->scid);
error = EINVAL;
goto out;
}
/* Create and send L2CAP_DisconReq message */
cmd = ng_l2cap_new_cmd(ch->con, ch, ng_l2cap_get_ident(ch->con),
NG_L2CAP_DISCON_REQ, msg->header.token);
if (cmd == NULL) {
ng_l2cap_free_chan(ch);
error = ENOMEM;
goto out;
}
if (cmd->ident == NG_L2CAP_NULL_IDENT) {
ng_l2cap_free_chan(ch);
ng_l2cap_free_cmd(cmd);
error = EIO;
goto out;
}
_ng_l2cap_discon_req(cmd->aux, cmd->ident, ch->dcid, ch->scid);
if (cmd->aux == NULL) {
ng_l2cap_free_chan(ch);
ng_l2cap_free_cmd(cmd);
error = ENOBUFS;
goto out;
}
ch->state = NG_L2CAP_W4_L2CAP_DISCON_RSP;
/* Link command to the queue */
ng_l2cap_link_cmd(ch->con, cmd);
ng_l2cap_lp_deliver(ch->con);
out:
return (error);
} /* ng_l2cap_l2ca_discon_req */