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 1.13 1999/12/13 21:25:27 hm Exp $
34 * last edit-date: [Mon Dec 13 22:04:10 1999]
36 *---------------------------------------------------------------------------*/
38 #include <sys/param.h>
39 #include <sys/systm.h>
42 #if defined(__FreeBSD__)
44 #include <sys/ioctl.h>
50 #include <sys/socket.h>
53 #include <i4b/include/i4b_mbuf.h>
54 #include <i4b/include/i4b_global.h>
56 #define I4B_MBUF_DEBUG
57 #undef I4B_MBUF_TYPE_DEBUG
59 #ifdef I4B_MBUF_TYPE_DEBUG
68 #define MT_DCHAN MT_DATA
69 #define MT_BCHAN MT_DATA
73 #define MT_I4B_D MT_DCHAN
74 #define MT_I4B_B MT_BCHAN
76 #else /* ! I4B_MBUF_TYPE_DEBUG */
78 #define MT_I4B_D MT_DATA
79 #define MT_I4B_B MT_DATA
81 #endif /* I4B_MBUF_TYPE_DEBUG */
83 /*---------------------------------------------------------------------------*
84 * allocate D-channel mbuf space
85 *---------------------------------------------------------------------------*/
91 if(len > MCLBYTES) /* if length > max extension size */
95 printf("i4b_getmbuf: error - len(%d) > MCLBYTES(%d)\n",
102 MGETHDR(m, M_DONTWAIT, MT_I4B_D); /* get mbuf with pkthdr */
104 /* did we actually get the mbuf ? */
109 #ifdef I4B_MBUF_DEBUG
110 printf("i4b_getbuf: error - MGETHDR failed!\n");
118 MCLGET(m, M_DONTWAIT);
120 if(!(m->m_flags & M_EXT))
124 #ifdef I4B_MBUF_DEBUG
125 printf("i4b_getbuf: error - MCLGET failed, len(%d)\n", len);
137 /*---------------------------------------------------------------------------*
138 * free a D-channel mbuf
139 *---------------------------------------------------------------------------*/
141 i4b_Dfreembuf(struct mbuf *m)
147 /*---------------------------------------------------------------------------*
148 * clear a D-channel ifqueue from data
149 *---------------------------------------------------------------------------*/
151 i4b_Dcleanifq(struct ifqueue *ifq)
156 while(!IF_QEMPTY(ifq))
165 /*---------------------------------------------------------------------------*
166 * allocate B-channel mbuf space
167 *---------------------------------------------------------------------------*/
169 i4b_Bgetmbuf(int len)
173 if(len > MCLBYTES) /* if length > max extension size */
176 #ifdef I4B_MBUF_DEBUG
177 printf("i4b_getmbuf: error - len(%d) > MCLBYTES(%d)\n",
184 MGETHDR(m, M_DONTWAIT, MT_I4B_B); /* get mbuf with pkthdr */
186 /* did we actually get the mbuf ? */
191 #ifdef I4B_MBUF_DEBUG
192 printf("i4b_getbuf: error - MGETHDR failed!\n");
200 MCLGET(m, M_DONTWAIT);
202 if(!(m->m_flags & M_EXT))
206 #ifdef I4B_MBUF_DEBUG
207 printf("i4b_getbuf: error - MCLGET failed, len(%d)\n", len);
219 /*---------------------------------------------------------------------------*
220 * free a B-channel mbuf
221 *---------------------------------------------------------------------------*/
223 i4b_Bfreembuf(struct mbuf *m)
229 /*---------------------------------------------------------------------------*
230 * clear a B-channel ifqueue from data
231 *---------------------------------------------------------------------------*/
233 i4b_Bcleanifq(struct ifqueue *ifq)
238 while(!IF_QEMPTY(ifq))