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netgraph.h (191816) netgraph.h (194012)
1/*
2 * netgraph.h
3 */
4
5/*-
6 * Copyright (c) 1996-1999 Whistle Communications, Inc.
7 * All rights reserved.
8 *

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32 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
35 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
36 * OF SUCH DAMAGE.
37 *
38 * Author: Julian Elischer <julian@freebsd.org>
39 *
1/*
2 * netgraph.h
3 */
4
5/*-
6 * Copyright (c) 1996-1999 Whistle Communications, Inc.
7 * All rights reserved.
8 *

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32 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
35 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
36 * OF SUCH DAMAGE.
37 *
38 * Author: Julian Elischer <julian@freebsd.org>
39 *
40 * $FreeBSD: head/sys/netgraph/netgraph.h 191816 2009-05-05 10:56:12Z zec $
40 * $FreeBSD: head/sys/netgraph/netgraph.h 194012 2009-06-11 16:50:49Z zec $
41 * $Whistle: netgraph.h,v 1.29 1999/11/01 07:56:13 julian Exp $
42 */
43
44#ifndef _NETGRAPH_NETGRAPH_H_
45#define _NETGRAPH_NETGRAPH_H_
46
47#ifndef _KERNEL
48#error "This file should not be included in user level programs"

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125#endif /* NETGRAPH_DEBUG */ /*----------------------------------------------*/
126};
127/* Flags for a hook */
128#define HK_INVALID 0x0001 /* don't trust it! */
129#define HK_QUEUE 0x0002 /* queue for later delivery */
130#define HK_FORCE_WRITER 0x0004 /* Incoming data queued as a writer */
131#define HK_DEAD 0x0008 /* This is the dead hook.. don't free */
132#define HK_HI_STACK 0x0010 /* Hook has hi stack usage */
41 * $Whistle: netgraph.h,v 1.29 1999/11/01 07:56:13 julian Exp $
42 */
43
44#ifndef _NETGRAPH_NETGRAPH_H_
45#define _NETGRAPH_NETGRAPH_H_
46
47#ifndef _KERNEL
48#error "This file should not be included in user level programs"

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125#endif /* NETGRAPH_DEBUG */ /*----------------------------------------------*/
126};
127/* Flags for a hook */
128#define HK_INVALID 0x0001 /* don't trust it! */
129#define HK_QUEUE 0x0002 /* queue for later delivery */
130#define HK_FORCE_WRITER 0x0004 /* Incoming data queued as a writer */
131#define HK_DEAD 0x0008 /* This is the dead hook.. don't free */
132#define HK_HI_STACK 0x0010 /* Hook has hi stack usage */
133#define HK_TO_INBOUND 0x0020 /* Hook on ntw. stack inbound path. */
133
134/*
135 * Public Methods for hook
136 * If you can't do it with these you probably shouldn;t be doing it.
137 */
138void ng_unref_hook(hook_p hook); /* don't move this */
139#define _NG_HOOK_REF(hook) atomic_add_int(&(hook)->hk_refs, 1)
140#define _NG_HOOK_NAME(hook) ((hook)->hk_name)

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145#define _NG_HOOK_PRIVATE(hook) ((hook)->hk_private)
146#define _NG_HOOK_NOT_VALID(hook) ((hook)->hk_flags & HK_INVALID)
147#define _NG_HOOK_IS_VALID(hook) (!((hook)->hk_flags & HK_INVALID))
148#define _NG_HOOK_NODE(hook) ((hook)->hk_node) /* only rvalue! */
149#define _NG_HOOK_PEER(hook) ((hook)->hk_peer) /* only rvalue! */
150#define _NG_HOOK_FORCE_WRITER(hook) \
151 do { hook->hk_flags |= HK_FORCE_WRITER; } while (0)
152#define _NG_HOOK_FORCE_QUEUE(hook) do { hook->hk_flags |= HK_QUEUE; } while (0)
134
135/*
136 * Public Methods for hook
137 * If you can't do it with these you probably shouldn;t be doing it.
138 */
139void ng_unref_hook(hook_p hook); /* don't move this */
140#define _NG_HOOK_REF(hook) atomic_add_int(&(hook)->hk_refs, 1)
141#define _NG_HOOK_NAME(hook) ((hook)->hk_name)

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146#define _NG_HOOK_PRIVATE(hook) ((hook)->hk_private)
147#define _NG_HOOK_NOT_VALID(hook) ((hook)->hk_flags & HK_INVALID)
148#define _NG_HOOK_IS_VALID(hook) (!((hook)->hk_flags & HK_INVALID))
149#define _NG_HOOK_NODE(hook) ((hook)->hk_node) /* only rvalue! */
150#define _NG_HOOK_PEER(hook) ((hook)->hk_peer) /* only rvalue! */
151#define _NG_HOOK_FORCE_WRITER(hook) \
152 do { hook->hk_flags |= HK_FORCE_WRITER; } while (0)
153#define _NG_HOOK_FORCE_QUEUE(hook) do { hook->hk_flags |= HK_QUEUE; } while (0)
154#define _NG_HOOK_SET_TO_INBOUND(hook) \
155 do { hook->hk_flags |= HK_TO_INBOUND; } while (0)
153#define _NG_HOOK_HI_STACK(hook) do { hook->hk_flags |= HK_HI_STACK; } while (0)
154
155/* Some shortcuts */
156#define NG_PEER_NODE(hook) NG_HOOK_NODE(NG_HOOK_PEER(hook))
157#define NG_PEER_HOOK_NAME(hook) NG_HOOK_NAME(NG_HOOK_PEER(hook))
158#define NG_PEER_NODE_NAME(hook) NG_NODE_NAME(NG_PEER_NODE(hook))
159
160#ifdef NETGRAPH_DEBUG /*----------------------------------------------*/

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171static __inline void _ng_hook_set_rcvdata(hook_p hook,
172 ng_rcvdata_t *val, char * file, int line);
173static __inline void * _ng_hook_private(hook_p hook, char * file, int line);
174static __inline int _ng_hook_not_valid(hook_p hook, char * file, int line);
175static __inline int _ng_hook_is_valid(hook_p hook, char * file, int line);
176static __inline node_p _ng_hook_node(hook_p hook, char * file, int line);
177static __inline hook_p _ng_hook_peer(hook_p hook, char * file, int line);
178static __inline void _ng_hook_force_writer(hook_p hook, char * file,
156#define _NG_HOOK_HI_STACK(hook) do { hook->hk_flags |= HK_HI_STACK; } while (0)
157
158/* Some shortcuts */
159#define NG_PEER_NODE(hook) NG_HOOK_NODE(NG_HOOK_PEER(hook))
160#define NG_PEER_HOOK_NAME(hook) NG_HOOK_NAME(NG_HOOK_PEER(hook))
161#define NG_PEER_NODE_NAME(hook) NG_NODE_NAME(NG_PEER_NODE(hook))
162
163#ifdef NETGRAPH_DEBUG /*----------------------------------------------*/

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174static __inline void _ng_hook_set_rcvdata(hook_p hook,
175 ng_rcvdata_t *val, char * file, int line);
176static __inline void * _ng_hook_private(hook_p hook, char * file, int line);
177static __inline int _ng_hook_not_valid(hook_p hook, char * file, int line);
178static __inline int _ng_hook_is_valid(hook_p hook, char * file, int line);
179static __inline node_p _ng_hook_node(hook_p hook, char * file, int line);
180static __inline hook_p _ng_hook_peer(hook_p hook, char * file, int line);
181static __inline void _ng_hook_force_writer(hook_p hook, char * file,
179 int line);
180static __inline void _ng_hook_force_queue(hook_p hook, char * file, int line);
182 int line);
183static __inline void _ng_hook_force_queue(hook_p hook, char * file,
184 int line);
185static __inline void _ng_hook_set_to_inbound(hook_p hook, char * file,
186 int line);
181
182static __inline void
183_chkhook(hook_p hook, char *file, int line)
184{
185 if (hook->hk_magic != HK_MAGIC) {
186 printf("Accessing freed hook ");
187 dumphook(hook, file, line);
188 }

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277static __inline void
278_ng_hook_force_queue(hook_p hook, char * file, int line)
279{
280 _chkhook(hook, file, line);
281 _NG_HOOK_FORCE_QUEUE(hook);
282}
283
284static __inline void
187
188static __inline void
189_chkhook(hook_p hook, char *file, int line)
190{
191 if (hook->hk_magic != HK_MAGIC) {
192 printf("Accessing freed hook ");
193 dumphook(hook, file, line);
194 }

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283static __inline void
284_ng_hook_force_queue(hook_p hook, char * file, int line)
285{
286 _chkhook(hook, file, line);
287 _NG_HOOK_FORCE_QUEUE(hook);
288}
289
290static __inline void
291_ng_hook_set_to_inbound(hook_p hook, char * file, int line)
292{
293 _chkhook(hook, file, line);
294 _NG_HOOK_SET_TO_INBOUND(hook);
295}
296
297static __inline void
285_ng_hook_hi_stack(hook_p hook, char * file, int line)
286{
287 _chkhook(hook, file, line);
288 _NG_HOOK_HI_STACK(hook);
289}
290
291
292#define NG_HOOK_REF(hook) _ng_hook_ref(hook, _NN_)

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297#define NG_HOOK_SET_RCVDATA(hook, val) _ng_hook_set_rcvdata(hook, val, _NN_)
298#define NG_HOOK_PRIVATE(hook) _ng_hook_private(hook, _NN_)
299#define NG_HOOK_NOT_VALID(hook) _ng_hook_not_valid(hook, _NN_)
300#define NG_HOOK_IS_VALID(hook) _ng_hook_is_valid(hook, _NN_)
301#define NG_HOOK_NODE(hook) _ng_hook_node(hook, _NN_)
302#define NG_HOOK_PEER(hook) _ng_hook_peer(hook, _NN_)
303#define NG_HOOK_FORCE_WRITER(hook) _ng_hook_force_writer(hook, _NN_)
304#define NG_HOOK_FORCE_QUEUE(hook) _ng_hook_force_queue(hook, _NN_)
298_ng_hook_hi_stack(hook_p hook, char * file, int line)
299{
300 _chkhook(hook, file, line);
301 _NG_HOOK_HI_STACK(hook);
302}
303
304
305#define NG_HOOK_REF(hook) _ng_hook_ref(hook, _NN_)

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310#define NG_HOOK_SET_RCVDATA(hook, val) _ng_hook_set_rcvdata(hook, val, _NN_)
311#define NG_HOOK_PRIVATE(hook) _ng_hook_private(hook, _NN_)
312#define NG_HOOK_NOT_VALID(hook) _ng_hook_not_valid(hook, _NN_)
313#define NG_HOOK_IS_VALID(hook) _ng_hook_is_valid(hook, _NN_)
314#define NG_HOOK_NODE(hook) _ng_hook_node(hook, _NN_)
315#define NG_HOOK_PEER(hook) _ng_hook_peer(hook, _NN_)
316#define NG_HOOK_FORCE_WRITER(hook) _ng_hook_force_writer(hook, _NN_)
317#define NG_HOOK_FORCE_QUEUE(hook) _ng_hook_force_queue(hook, _NN_)
318#define NG_HOOK_SET_TO_INBOUND(hook) _ng_hook_set_to_inbound(hook, _NN_)
305#define NG_HOOK_HI_STACK(hook) _ng_hook_hi_stack(hook, _NN_)
306
307#else /* NETGRAPH_DEBUG */ /*----------------------------------------------*/
308
309#define NG_HOOK_REF(hook) _NG_HOOK_REF(hook)
310#define NG_HOOK_NAME(hook) _NG_HOOK_NAME(hook)
311#define NG_HOOK_UNREF(hook) _NG_HOOK_UNREF(hook)
312#define NG_HOOK_SET_PRIVATE(hook, val) _NG_HOOK_SET_PRIVATE(hook, val)
313#define NG_HOOK_SET_RCVMSG(hook, val) _NG_HOOK_SET_RCVMSG(hook, val)
314#define NG_HOOK_SET_RCVDATA(hook, val) _NG_HOOK_SET_RCVDATA(hook, val)
315#define NG_HOOK_PRIVATE(hook) _NG_HOOK_PRIVATE(hook)
316#define NG_HOOK_NOT_VALID(hook) _NG_HOOK_NOT_VALID(hook)
317#define NG_HOOK_IS_VALID(hook) _NG_HOOK_IS_VALID(hook)
318#define NG_HOOK_NODE(hook) _NG_HOOK_NODE(hook)
319#define NG_HOOK_PEER(hook) _NG_HOOK_PEER(hook)
320#define NG_HOOK_FORCE_WRITER(hook) _NG_HOOK_FORCE_WRITER(hook)
321#define NG_HOOK_FORCE_QUEUE(hook) _NG_HOOK_FORCE_QUEUE(hook)
319#define NG_HOOK_HI_STACK(hook) _ng_hook_hi_stack(hook, _NN_)
320
321#else /* NETGRAPH_DEBUG */ /*----------------------------------------------*/
322
323#define NG_HOOK_REF(hook) _NG_HOOK_REF(hook)
324#define NG_HOOK_NAME(hook) _NG_HOOK_NAME(hook)
325#define NG_HOOK_UNREF(hook) _NG_HOOK_UNREF(hook)
326#define NG_HOOK_SET_PRIVATE(hook, val) _NG_HOOK_SET_PRIVATE(hook, val)
327#define NG_HOOK_SET_RCVMSG(hook, val) _NG_HOOK_SET_RCVMSG(hook, val)
328#define NG_HOOK_SET_RCVDATA(hook, val) _NG_HOOK_SET_RCVDATA(hook, val)
329#define NG_HOOK_PRIVATE(hook) _NG_HOOK_PRIVATE(hook)
330#define NG_HOOK_NOT_VALID(hook) _NG_HOOK_NOT_VALID(hook)
331#define NG_HOOK_IS_VALID(hook) _NG_HOOK_IS_VALID(hook)
332#define NG_HOOK_NODE(hook) _NG_HOOK_NODE(hook)
333#define NG_HOOK_PEER(hook) _NG_HOOK_PEER(hook)
334#define NG_HOOK_FORCE_WRITER(hook) _NG_HOOK_FORCE_WRITER(hook)
335#define NG_HOOK_FORCE_QUEUE(hook) _NG_HOOK_FORCE_QUEUE(hook)
336#define NG_HOOK_SET_TO_INBOUND(hook) _NG_HOOK_SET_TO_INBOUND(hook)
322#define NG_HOOK_HI_STACK(hook) _NG_HOOK_HI_STACK(hook)
323
324#endif /* NETGRAPH_DEBUG */ /*----------------------------------------------*/
325
326/***********************************************************************
327 ***************** Node Structure and Methods **************************
328 ***********************************************************************
329 * Structure of a node

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1184#define NG_FREE_META(meta)
1185#define NGI_GET_META(i,m)
1186#define ng_copy_meta(meta) NULL
1187
1188/* Hash related definitions */
1189#define NG_ID_HASH_SIZE 128 /* most systems wont need even this many */
1190#define NG_NAME_HASH_SIZE 128 /* most systems wont need even this many */
1191
337#define NG_HOOK_HI_STACK(hook) _NG_HOOK_HI_STACK(hook)
338
339#endif /* NETGRAPH_DEBUG */ /*----------------------------------------------*/
340
341/***********************************************************************
342 ***************** Node Structure and Methods **************************
343 ***********************************************************************
344 * Structure of a node

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1199#define NG_FREE_META(meta)
1200#define NGI_GET_META(i,m)
1201#define ng_copy_meta(meta) NULL
1202
1203/* Hash related definitions */
1204#define NG_ID_HASH_SIZE 128 /* most systems wont need even this many */
1205#define NG_NAME_HASH_SIZE 128 /* most systems wont need even this many */
1206
1207/*
1208 * Mark the current thread when called from the outbound path of the
1209 * network stack, in order to enforce queuing on ng nodes calling into
1210 * the inbound network stack path.
1211 */
1212#define NG_OUTBOUND_THREAD_REF() \
1213 curthread->td_ng_outbound++
1214#define NG_OUTBOUND_THREAD_UNREF() \
1215 do { \
1216 curthread->td_ng_outbound--; \
1217 KASSERT(curthread->td_ng_outbound >= 0, \
1218 ("%s: negative td_ng_outbound", __func__)); \
1219 } while (0)
1220
1192/* Virtualization macros */
1193#define INIT_VNET_NETGRAPH(vnet) \
1194 INIT_FROM_VNET(vnet, VNET_MOD_NETGRAPH, \
1195 struct vnet_netgraph, vnet_netgraph)
1196
1197#define VNET_NETGRAPH(sym) VSYM(vnet_netgraph, sym)
1198
1199struct vnet_netgraph {

--- 25 unchanged lines hidden --- 		1221/* Virtualization macros */
1222#define INIT_VNET_NETGRAPH(vnet) \
1223 INIT_FROM_VNET(vnet, VNET_MOD_NETGRAPH, \
1224 struct vnet_netgraph, vnet_netgraph)
1225
1226#define VNET_NETGRAPH(sym) VSYM(vnet_netgraph, sym)
1227
1228struct vnet_netgraph {

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