2 * Copyright (c) 1997, 2002 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
26 /*---------------------------------------------------------------------------
28 * i4b - mbuf handling support routines
29 * ------------------------------------
30 * last edit-date: [Sat Mar 9 17:51:22 2002]
32 *---------------------------------------------------------------------------*/
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
37 #include <sys/param.h>
38 #include <sys/systm.h>
40 #include <sys/socket.h>
43 #include <i4b/include/i4b_mbuf.h>
45 #define I4B_MBUF_DEBUG
46 #undef I4B_MBUF_TYPE_DEBUG
48 #ifdef I4B_MBUF_TYPE_DEBUG
53 #define MT_I4B_D MT_DCHAN
54 #define MT_I4B_B MT_BCHAN
56 #else /* ! I4B_MBUF_TYPE_DEBUG */
58 #define MT_I4B_D MT_DATA
59 #define MT_I4B_B MT_DATA
61 #endif /* I4B_MBUF_TYPE_DEBUG */
63 /*---------------------------------------------------------------------------*
64 * allocate D-channel mbuf space
65 *---------------------------------------------------------------------------*/
71 if(len > MCLBYTES) /* if length > max extension size */
75 printf("i4b_getmbuf: error - len(%d) > MCLBYTES(%d)\n",
82 MGETHDR(m, M_DONTWAIT, MT_I4B_D); /* get mbuf with pkthdr */
84 /* did we actually get the mbuf ? */
90 printf("i4b_getbuf: error - MGETHDR failed!\n");
98 MCLGET(m, M_DONTWAIT);
100 if(!(m->m_flags & M_EXT))
104 #ifdef I4B_MBUF_DEBUG
105 printf("i4b_getbuf: error - MCLGET failed, len(%d)\n", len);
117 /*---------------------------------------------------------------------------*
118 * free a D-channel mbuf
119 *---------------------------------------------------------------------------*/
121 i4b_Dfreembuf(struct mbuf *m)
127 /*---------------------------------------------------------------------------*
128 * clear a D-channel ifqueue from data
129 *---------------------------------------------------------------------------*/
131 i4b_Dcleanifq(struct ifqueue *ifq)
140 /*---------------------------------------------------------------------------*
141 * allocate B-channel mbuf space
142 *---------------------------------------------------------------------------*/
144 i4b_Bgetmbuf(int len)
148 if(len > MCLBYTES) /* if length > max extension size */
151 #ifdef I4B_MBUF_DEBUG
152 printf("i4b_getmbuf: error - len(%d) > MCLBYTES(%d)\n",
159 MGETHDR(m, M_DONTWAIT, MT_I4B_B); /* get mbuf with pkthdr */
161 /* did we actually get the mbuf ? */
166 #ifdef I4B_MBUF_DEBUG
167 printf("i4b_getbuf: error - MGETHDR failed!\n");
175 MCLGET(m, M_DONTWAIT);
177 if(!(m->m_flags & M_EXT))
181 #ifdef I4B_MBUF_DEBUG
182 printf("i4b_getbuf: error - MCLGET failed, len(%d)\n", len);
194 /*---------------------------------------------------------------------------*
195 * free a B-channel mbuf
196 *---------------------------------------------------------------------------*/
198 i4b_Bfreembuf(struct mbuf *m)
204 /*---------------------------------------------------------------------------*
205 * clear a B-channel ifqueue from data
206 *---------------------------------------------------------------------------*/
208 i4b_Bcleanifq(struct ifqueue *ifq)