1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 1982, 1986, 1988 Regents of the University of California.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
*/
#ifndef _SMBSRV_MBUF_H
#define _SMBSRV_MBUF_H
/*
* PBSHORTCUT This file should be removed from the PB port but is required
* for now to get it to compile. This file has also been modified.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/list.h>
#include <smbsrv/string.h>
#include <smbsrv/alloc.h>
#ifdef __cplusplus
extern "C" {
#endif
#define MSIZE 256
#define MCLBYTES 2048
#define MCLSHIFT 11
#define MCLOFSET (MCLBYTES - 1)
#define NBPG 4096
#define CLBYTES NBPG
#define PB_PAGESIZE 4096
/*
* Mbufs are of a single size, MSIZE (machine/machparam.h), which
* includes overhead. An mbuf may add a single "mbuf cluster" of size
* MCLBYTES (also in machine/machparam.h), which has no additional overhead
* and is used instead of the internal data area; this is done when
* at least MINCLSIZE of data must be stored.
*/
#define MLEN (MSIZE - sizeof (struct m_hdr)) /* normal data len */
#define MHLEN (MLEN - sizeof (struct pkthdr)) /* data len w/pkthdr */
#define MINCLSIZE (MHLEN + MLEN) /* smallest amount to put in cluster */
/*
* Macros for type conversion
* mtod(m,t) - convert mbuf pointer to data pointer of correct type
*/
#define mtod(m, t) ((t)((m)->m_data))
/* header at beginning of each mbuf: */
struct m_hdr {
struct mbuf *mh_next; /* next buffer in chain */
struct mbuf *mh_nextpkt; /* next chain in queue/record */
int mh_len; /* amount of data in this mbuf */
caddr_t mh_data; /* location of data */
short mh_type; /* type of data in this mbuf */
short mh_flags; /* flags; see below */
};
/* record/packet header in first mbuf of chain; valid if M_PKTHDR set */
struct pkthdr {
int len; /* total packet length */
};
/* XXX probably do not need m_ext */
/* description of external storage mapped into mbuf, valid if M_EXT set */
struct m_ext {
caddr_t ext_buf; /* start of buffer */
int (*ext_ref)(); /* refcount adjust function */
uint_t ext_size; /* size of buffer, for ext_free */
};
typedef struct mbuf {
struct m_hdr m_hdr;
union {
struct {
struct pkthdr MH_pkthdr; /* M_PKTHDR set */
union {
struct m_ext MH_ext; /* M_EXT set */
char MH_databuf[MHLEN];
} MH_dat;
} MH;
char M_databuf[MLEN]; /* !M_PKTHDR, !M_EXT */
} M_dat;
} mbuf_t;
#define m_next m_hdr.mh_next
#define m_len m_hdr.mh_len
#define m_data m_hdr.mh_data
#define m_type m_hdr.mh_type
#define m_flags m_hdr.mh_flags
#define m_nextpkt m_hdr.mh_nextpkt
#define m_act m_nextpkt
#define m_pkthdr M_dat.MH.MH_pkthdr
#define m_ext M_dat.MH.MH_dat.MH_ext
#define m_pktdat M_dat.MH.MH_dat.MH_databuf
#define m_dat M_dat.M_databuf
/* mbuf flags */
#define M_EXT 0x0001 /* has associated external storage */
#define M_PKTHDR 0x0002 /* start of record */
#define M_EOR 0x0004 /* end of record */
/* mbuf pkthdr flags, also in m_flags */
#define M_BCAST 0x0100 /* send/received as link-level broadcast */
#define M_MCAST 0x0200 /* send/received as link-level multicast */
/* flags copied when copying m_pkthdr */
#define M_COPYFLAGS (M_PKTHDR|M_EOR|M_BCAST|M_MCAST)
/* XXX probably only need MT_DATA */
/* mbuf types */
#define MT_FREE 0 /* should be on free list */
#define MT_DATA 1 /* dynamic (data) allocation */
#define MT_HEADER 2 /* packet header */
#define MT_SOCKET 3 /* socket structure */
#define MT_PCB 4 /* protocol control block */
#define MT_RTABLE 5 /* routing tables */
#define MT_HTABLE 6 /* IMP host tables */
#define MT_ATABLE 7 /* address resolution tables */
#define MT_SONAME 8 /* socket name */
#define MT_SOOPTS 10 /* socket options */
#define MT_FTABLE 11 /* fragment reassembly header */
#define MT_RIGHTS 12 /* access rights */
#define MT_IFADDR 13 /* interface address */
#define MT_CONTROL 14 /* extra-data protocol message */
#define MT_OOBDATA 15 /* expedited data */
/*
* flags to malloc: PBSHORTCUT
*/
#define M_WAITOK 0x0000
#define M_NOWAIT 0x0001
/* flags to m_get/MGET */
#define M_DONTWAIT M_NOWAIT
#define M_WAIT M_WAITOK
/*
* mbuf allocation/deallocation macros:
*
* MGET(struct mbuf *m, int how, int type)
* allocates an mbuf and initializes it to contain internal data.
*
* MGETHDR(struct mbuf *m, int how, int type)
* allocates an mbuf and initializes it to contain a packet header
* and internal data.
*/
#define MGET(m, how, type) { \
m = MEM_ZALLOC("mbuf", sizeof (struct mbuf)); \
(m)->m_next = (struct mbuf *)NULL; \
(m)->m_nextpkt = (struct mbuf *)NULL; \
(m)->m_data = (m)->m_dat; \
(m)->m_flags = 0; \
(m)->m_type = (short)(type); \
}
#define MGETHDR(m, how, type) { \
m = MEM_ZALLOC("mbuf", sizeof (struct mbuf)); \
(m)->m_type = (MT_HEADER); \
(m)->m_next = (struct mbuf *)NULL; \
(m)->m_nextpkt = (struct mbuf *)NULL; \
(m)->m_data = (m)->m_pktdat; \
(m)->m_flags = M_PKTHDR; \
}
extern int mclref();
extern int mclrefnoop();
#define MCLGET(m, how) \
{ \
(m)->m_ext.ext_buf = MEM_ZALLOC("mbuf", MCLBYTES); \
(m)->m_data = (m)->m_ext.ext_buf; \
(m)->m_flags |= M_EXT; \
(m)->m_ext.ext_size = MCLBYTES; \
(m)->m_ext.ext_ref = mclref; \
}
/*
* MFREE(struct mbuf *m, struct mbuf *nn)
* Free a single mbuf and associated external storage.
* Place the successor, if any, in nn.
*/
#define MFREE(m, nn) \
{ \
if ((m)->m_flags & M_EXT) { \
(*((m)->m_ext.ext_ref))((m)->m_ext.ext_buf, \
(m)->m_ext.ext_size, -1); \
(m)->m_ext.ext_buf = 0; \
} \
(nn) = (m)->m_next; \
(m)->m_next = 0; \
MEM_FREE("mbuf", m); \
}
/*
* As above, for mbufs allocated with m_gethdr/MGETHDR
* or initialized by M_COPY_PKTHDR.
*/
#define MH_ALIGN(m, len) \
{ (m)->m_data += (MHLEN - (len)) &~ (sizeof (int32_t) - 1); }
#define SMB_MBC_MAGIC 0x4D42435F
#define SMB_MBC_VALID(p) ASSERT((p)->mbc_magic == SMB_MBC_MAGIC)
typedef struct mbuf_chain {
uint32_t mbc_magic;
list_node_t mbc_lnd;
volatile uint32_t flags; /* Various flags */
struct mbuf_chain *shadow_of; /* I'm shadowing someone */
mbuf_t *chain; /* Start of chain */
int32_t max_bytes; /* max # of bytes for chain */
int32_t chain_offset; /* Current offset into chain */
} mbuf_chain_t;
mbuf_t *m_free(mbuf_t *);
void m_freem(mbuf_t *);
int mbc_moveout(mbuf_chain_t *, caddr_t, int, int *);
int smb_mbc_init(void);
void smb_mbc_fini(void);
mbuf_chain_t *smb_mbc_alloc(uint32_t);
void smb_mbc_free(mbuf_chain_t *);
#ifdef __cplusplus
}
#endif
#endif /* _SMBSRV_MBUF_H */
|
