2 .\" Copyright (c) 2001-2004
3 .\" Fraunhofer Institute for Open Communication Systems (FhG Fokus).
4 .\" All rights reserved.
7 .\" All rights reserved.
9 .\" Author: Harti Brandt <harti@freebsd.org>
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39 .Nd netgraph ATM Call Control node type
41 .Fd #include <netnatm/unimsg.h>
42 .Fd #include <netnatm/msg/unistruct.h>
43 .Fd #include <netnatm/sig/unidef.h>
44 .Fd #include <netnatm/api/unisap.h>
45 .Fd #include <netnatm/api/atmapi.h>
46 .Fd #include <netnatm/api/ccatm.h>
47 .Fd #include <netgraph.h>
48 .Fd #include <netgraph/ng_uni.h>
49 .Fd #include <netgraph/ng_ccatm.h>
53 node implements the API specified by the ATM Forum for access to ATM services
54 (see ATM-Forum document af-saa-0108).
55 This document specifies the semantics
56 of the API, not the exact language binding.
57 For this reason it is expected, that
58 this implementation is neither compile-time nor binary compatible with
59 other implementations of this API.
60 It should, however, be fairly straightforward
61 to convert between different API implementations.
63 This node is usually stacked on top of one or more UNI nodes (see
65 Each of these hooks appears as a
67 to the user of the node.
68 It has also one hook connected to the ILMI daemon for management purposes.
70 The node is removed when it receives a
72 messages or all hooks are disconnected.
74 The node understands a number of hooks with predefined names and an
75 unlimited number of hooks for user connections. The predefined names are:
76 .Bl -tag -width orphans
80 node on top of a UNI stack.
81 The node expects the interface on these hooks
82 to conform to the upper interface specified in
84 These hooks are forced into queuing mode, so that there are no circular
85 calls from call control to UNI and UNI back to call control.
88 in the hook name is the decimal port number and should not be zero.
89 The port number is a 32-bit unsigned integer.
91 This hook should be connected to the ILMI daemon.
92 No data is ever sent on this hook and all received data is discarded.
93 The hook is used to send control messages along.
97 NGM_DUMP command a textual description of the current state of the node is sent
99 This text is sent as one large message consisting of more
104 All other hook names are taken to be user hooks and correspond to an
105 ATM endpoint as specified in the ATM Forum document. The interface on these
111 u_int32_t op; /* request code */
112 u_char data[]; /* optional data */
116 This structure is followed directly by the data for the operation.
117 The opcode is one of the following:
121 ATMOP_ABORT_CONNECTION,
122 ATMOP_ACCEPT_INCOMING_CALL,
124 ATMOP_ADD_PARTY_REJECT,
125 ATMOP_ADD_PARTY_SUCCESS,
126 ATMOP_ARRIVAL_OF_INCOMING_CALL,
128 ATMOP_CONNECT_OUTGOING_CALL,
130 ATMOP_GET_LOCAL_PORT_INFO,
131 ATMOP_P2MP_CALL_ACTIVE,
132 ATMOP_P2P_CALL_ACTIVE,
133 ATMOP_PREPARE_INCOMING_CALL,
134 ATMOP_PREPARE_OUTGOING_CALL,
135 ATMOP_QUERY_CONNECTION_ATTRIBUTES,
136 ATMOP_REJECT_INCOMING_CALL,
137 ATMOP_SET_CONNECTION_ATTRIBUTES,
138 ATMOP_WAIT_ON_INCOMING_CALL,
139 ATMOP_SET_CONNECTION_ATTRIBUTES_X,
140 ATMOP_QUERY_CONNECTION_ATTRIBUTES_X,
145 These codes correspond directly to the operations specified in the ATM
146 Forum document with the following exceptions:
154 The argument is a struct
158 uint32_t data; /* type of attached data */
164 is zero, the node has accepted the user request.
165 If something goes wrong,
167 contains an error code.
168 For requests that return data,
170 contains a code describing the type of data and the data itseld
171 starts immediately after the structure.
172 .It Dv ATMOP_QUERY_CONNECTION_ATTRIBUTES_X
174 .Dv ATMOP_QUERY_CONNECTION_ATTRIBUTES
175 except that it allows to query several attributes
177 .It Dv ATMOP_SET_CONNECTION_ATTRIBUTES_X
179 .Dv ATMOP_SET_CONNECTION_ATTRIBUTES
180 except that it allows to set several attributes
182 The list of attributes is followed directly by the attributes in the same
183 order as they appear in the list.
186 If a user hook is disconnected an active connection on that hook is released.
187 Incoming connections waiting to be accepted are reoffered to other
188 listeing hooks or rejected.
190 Besides the generic messages the node understands the following special
193 .It Dv NGM_CCATM_DUMP
194 This causes the internal state of the node to be dumped in ASCII to the
197 .It Dv NGM_CCATM_STOP
198 This message causes all connections on that port to be aborted (not released!)
199 and all ATM endpoints which are bound to that port to be closed.
200 It stops processing of all messages from the UNI stack on that port UNI stack.
203 struct ngm_ccatm_port {
208 .It Dv NGM_CCATM_START
209 Start processing on the port.
213 .It Dv NGM_CCATM_CLEAR
216 structure and clears all prefixes and addresses on that port.
217 If the port number is zero, all ports are cleared.
218 .It Dv NGM_CCATM_GET_ADDRESSES
219 Get the list of all registered addresses on the given port.
222 structure and the result is a
223 .Fa ngm_ccatm_get_addresses
226 struct ngm_ccatm_get_addresses {
228 struct ngm_ccatm_address_req addr[0];
230 struct ngm_ccatm_address_req {
232 struct uni_addr addr;
238 field is zero in the request, all addresses on all ports
239 are returned, if it is not zero only the addresses on that port are reported.
240 The number of addresses is returned in the
243 .It Dv NGM_CCATM_ADDRESS_REGISTERED
244 This message is used by ILMI to inform the
246 node, that a previous address registration request was successful.
247 This causes the node to activate that address.
248 The argument to the message is a
249 .Fa ngm_ccatm_address_req
251 .It Dv NGM_CCATM_ADDRESS_UNREGISTERED
252 This message is used by ILMI to inform the
254 node, that an address has been unregistered.
255 The node clears that address from its tables.
257 .Fa ngm_ccatm_address_req
259 .It Dv NGM_CCATM_SET_PORT_PARAM
260 This request sets the parameters on the given port.
263 struct ngm_ccatm_atm_port {
264 uint32_t port; /* port for which to set parameters */
265 uint32_t pcr; /* port peak cell rate */
266 uint32_t max_vpi_bits;
267 uint32_t max_vci_bits;
268 uint32_t max_svpc_vpi;
269 uint32_t max_svcc_vpi;
270 uint32_t min_svcc_vci;
276 This should be used only by ILMI and when that port is stopped and the
277 address and prefix tables of that port are empty.
281 .It Dv NGM_CCATM_GET_PORT_PARAM
282 Retrieve the parameters of the given port.
286 .Fa ngm_ccatm_atm_port .
287 .It Dv NGM_CCATM_GET_PORTLIST
288 Get a list of all available ports on that node.
289 This is returned as a
291 struct ngm_ccatm_portlist {
296 .It Dv NGM_CCATM_GETSTATE
297 Return the state of a port.
299 .Fa struct ngm_ccatm_port
300 and the return values as a
302 .It Dv NGM_CCATM_SETLOG
303 This requests sets a new logging level and returns the previous one.
304 The argument is either a
306 in which case it specifies the new logging level, or may be empty
307 in which case just the old level is returned as a
309 .It Dv NGM_CCATM_RESET
311 This is allowed only if the number of user hooks and connected UNI stacks is
313 .It Dv NGM_CCATM_GET_EXSTAT
314 Return extended status information from the node.
321 .An Harti Brandt Aq harti@FreeBSD.org