diff options
Diffstat (limited to 'slirp/src/mbuf.h')
| m--------- | slirp | 0 | ||||
| -rw-r--r-- | slirp/src/mbuf.h | 127 |
2 files changed, 0 insertions, 127 deletions
diff --git a/slirp b/slirp new file mode 160000 +Subproject 59a1b1f165458c2acb7ff0525b543945f741622 diff --git a/slirp/src/mbuf.h b/slirp/src/mbuf.h deleted file mode 100644 index 732c85c63c..0000000000 --- a/slirp/src/mbuf.h +++ /dev/null @@ -1,127 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1988, 1993 - * The 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. 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. - * - * @(#)mbuf.h 8.3 (Berkeley) 1/21/94 - * mbuf.h,v 1.9 1994/11/14 13:54:20 bde Exp - */ - -#ifndef MBUF_H -#define MBUF_H - -/* - * Macros for type conversion - * mtod(m,t) - convert mbuf pointer to data pointer of correct type - */ -#define mtod(m,t) ((t)(m)->m_data) - -/* XXX About mbufs for slirp: - * Only one mbuf is ever used in a chain, for each "cell" of data. - * m_nextpkt points to the next packet, if fragmented. - * If the data is too large, the M_EXT is used, and a larger block - * is alloced. Therefore, m_free[m] must check for M_EXT and if set - * free the m_ext. This is inefficient memory-wise, but who cares. - */ - -/* - * mbufs allow to have a gap between the start of the allocated buffer (m_ext if - * M_EXT is set, m_dat otherwise) and the in-use data: - * - * |--gapsize----->|---m_len-------> - * |----------m_size------------------------------> - * |----M_ROOM--------------------> - * |-M_FREEROOM--> - * - * ^ ^ ^ - * m_dat/m_ext m_data end of buffer - */ - -/* - * How much room is in the mbuf, from m_data to the end of the mbuf - */ -#define M_ROOM(m) ((m->m_flags & M_EXT)? \ - (((m)->m_ext + (m)->m_size) - (m)->m_data) \ - : \ - (((m)->m_dat + (m)->m_size) - (m)->m_data)) - -/* - * How much free room there is - */ -#define M_FREEROOM(m) (M_ROOM(m) - (m)->m_len) - -struct mbuf { - /* XXX should union some of these! */ - /* header at beginning of each mbuf: */ - struct mbuf *m_next; /* Linked list of mbufs */ - struct mbuf *m_prev; - struct mbuf *m_nextpkt; /* Next packet in queue/record */ - struct mbuf *m_prevpkt; /* Flags aren't used in the output queue */ - int m_flags; /* Misc flags */ - - int m_size; /* Size of mbuf, from m_dat or m_ext */ - struct socket *m_so; - - char *m_data; /* Current location of data */ - int m_len; /* Amount of data in this mbuf, from m_data */ - - Slirp *slirp; - bool resolution_requested; - uint64_t expiration_date; - char *m_ext; - /* start of dynamic buffer area, must be last element */ - char m_dat[]; -}; - -#define ifq_prev m_prev -#define ifq_next m_next -#define ifs_prev m_prevpkt -#define ifs_next m_nextpkt -#define ifq_so m_so - -#define M_EXT 0x01 /* m_ext points to more (malloced) data */ -#define M_FREELIST 0x02 /* mbuf is on free list */ -#define M_USEDLIST 0x04 /* XXX mbuf is on used list (for dtom()) */ -#define M_DOFREE 0x08 /* when m_free is called on the mbuf, free() - * it rather than putting it on the free list */ - -void m_init(Slirp *); -void m_cleanup(Slirp *slirp); -struct mbuf * m_get(Slirp *); -void m_free(struct mbuf *); -void m_cat(register struct mbuf *, register struct mbuf *); -void m_inc(struct mbuf *, int); -void m_adj(struct mbuf *, int); -int m_copy(struct mbuf *, struct mbuf *, int, int); -struct mbuf * dtom(Slirp *, void *); - -static inline void ifs_init(struct mbuf *ifm) -{ - ifm->ifs_next = ifm->ifs_prev = ifm; -} - -#endif |