2 * Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 *---------------------------------------------------------------------------
27 * i4b - mbuf handling support routines
28 * ------------------------------------
30 * $Id: i4b_mbuf.c,v 1.11 1999/02/14 09:45:00 hm Exp $
32 * last edit-date: [Sun Feb 14 10:32:00 1999]
34 *---------------------------------------------------------------------------*/
36 #include <sys/param.h>
37 #include <sys/systm.h>
39 #if defined(__FreeBSD__) && __FreeBSD__ >= 3
40 #include <sys/ioccom.h>
42 #include <sys/ioctl.h>
47 #include <sys/kernel.h>
48 #include <sys/socket.h>
51 #include <i4b/include/i4b_mbuf.h>
52 #include <i4b/include/i4b_global.h>
54 #define I4B_MBUF_DEBUG
55 #undef I4B_MBUF_TYPE_DEBUG
57 #ifdef I4B_MBUF_TYPE_DEBUG
66 #define MT_DCHAN MT_DATA
67 #define MT_BCHAN MT_DATA
71 #define MT_I4B_D MT_DCHAN
72 #define MT_I4B_B MT_BCHAN
74 #else /* ! I4B_MBUF_TYPE_DEBUG */
76 #define MT_I4B_D MT_DATA
77 #define MT_I4B_B MT_DATA
79 #endif /* I4B_MBUF_TYPE_DEBUG */
81 /*---------------------------------------------------------------------------*
82 * allocate D-channel mbuf space
83 *---------------------------------------------------------------------------*/
89 if(len > MCLBYTES) /* if length > max extension size */
93 printf("i4b_getmbuf: error - len(%d) > MCLBYTES(%d)\n",
100 MGETHDR(m, M_DONTWAIT, MT_I4B_D); /* get mbuf with pkthdr */
102 /* did we actually get the mbuf ? */
107 #ifdef I4B_MBUF_DEBUG
108 printf("i4b_getbuf: error - MGETHDR failed!\n");
116 MCLGET(m, M_DONTWAIT);
118 if(!(m->m_flags & M_EXT))
122 #ifdef I4B_MBUF_DEBUG
123 printf("i4b_getbuf: error - MCLGET failed, len(%d)\n", len);
135 /*---------------------------------------------------------------------------*
136 * free a D-channel mbuf
137 *---------------------------------------------------------------------------*/
139 i4b_Dfreembuf(struct mbuf *m)
145 /*---------------------------------------------------------------------------*
146 * clear a D-channel ifqueue from data
147 *---------------------------------------------------------------------------*/
149 i4b_Dcleanifq(struct ifqueue *ifq)
154 while(!IF_QEMPTY(ifq))
163 /*---------------------------------------------------------------------------*
164 * allocate B-channel mbuf space
165 *---------------------------------------------------------------------------*/
167 i4b_Bgetmbuf(int len)
171 if(len > MCLBYTES) /* if length > max extension size */
174 #ifdef I4B_MBUF_DEBUG
175 printf("i4b_getmbuf: error - len(%d) > MCLBYTES(%d)\n",
182 MGETHDR(m, M_DONTWAIT, MT_I4B_B); /* get mbuf with pkthdr */
184 /* did we actually get the mbuf ? */
189 #ifdef I4B_MBUF_DEBUG
190 printf("i4b_getbuf: error - MGETHDR failed!\n");
198 MCLGET(m, M_DONTWAIT);
200 if(!(m->m_flags & M_EXT))
204 #ifdef I4B_MBUF_DEBUG
205 printf("i4b_getbuf: error - MCLGET failed, len(%d)\n", len);
217 /*---------------------------------------------------------------------------*
218 * free a B-channel mbuf
219 *---------------------------------------------------------------------------*/
221 i4b_Bfreembuf(struct mbuf *m)
227 /*---------------------------------------------------------------------------*
228 * clear a B-channel ifqueue from data
229 *---------------------------------------------------------------------------*/
231 i4b_Bcleanifq(struct ifqueue *ifq)
236 while(!IF_QEMPTY(ifq))