* 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
+ * 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.
*
#ifndef _MBUF_H_
#define _MBUF_H_
-#define m_freem m_free
-
-
#define MINCSIZE 4096 /* Amount to increase mbuf if too small */
/*
* Macros for type conversion
* mtod(m,t) - convert mbuf pointer to data pointer of correct type
- * dtom(x) - convert data pointer within mbuf to mbuf pointer (XXX)
*/
#define mtod(m,t) ((t)(m)->m_data)
-/* #define dtom(x) ((struct mbuf *)((int)(x) & ~(M_SIZE-1))) */
/* XXX About mbufs for slirp:
* Only one mbuf is ever used in a chain, for each "cell" of data.
* free the m_ext. This is inefficient memory-wise, but who cares.
*/
-/* XXX should union some of these! */
-/* header at beginning of each mbuf: */
-struct m_hdr {
- struct mbuf *mh_next; /* Linked list of mbufs */
- struct mbuf *mh_prev;
- struct mbuf *mh_nextpkt; /* Next packet in queue/record */
- struct mbuf *mh_prevpkt; /* Flags aren't used in the output queue */
- int mh_flags; /* Misc flags */
-
- int mh_size; /* Size of data */
- struct socket *mh_so;
-
- caddr_t mh_data; /* Location of data */
- int mh_len; /* Amount of data in this mbuf */
-};
-
-/*
+/*
* 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)? \
#define M_TRAILINGSPACE M_FREEROOM
struct mbuf {
- struct m_hdr m_hdr;
- union M_dat {
- char m_dat_[1]; /* ANSI don't like 0 sized arrays */
- char *m_ext_;
- } M_dat;
+ /* 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 data */
+ struct socket *m_so;
+
+ caddr_t m_data; /* Location of data */
+ int m_len; /* Amount of data in this mbuf */
+
+ Slirp *slirp;
+ bool arp_requested;
+ uint64_t expiration_date;
+ /* start of dynamic buffer area, must be last element */
+ union {
+ char m_dat[1]; /* ANSI don't like 0 sized arrays */
+ char *m_ext;
+ };
};
-#define m_next m_hdr.mh_next
-#define m_prev m_hdr.mh_prev
-#define m_nextpkt m_hdr.mh_nextpkt
-#define m_prevpkt m_hdr.mh_prevpkt
-#define m_flags m_hdr.mh_flags
-#define m_len m_hdr.mh_len
-#define m_data m_hdr.mh_data
-#define m_size m_hdr.mh_size
-#define m_dat M_dat.m_dat_
-#define m_ext M_dat.m_ext_
-#define m_so m_hdr.mh_so
-
#define ifq_prev m_prev
#define ifq_next m_next
#define ifs_prev m_prevpkt
#define M_DOFREE 0x08 /* when m_free is called on the mbuf, free()
* it rather than putting it on the free list */
-/*
- * Mbuf statistics. XXX
- */
-
-struct mbstat {
- int mbs_alloced; /* Number of mbufs allocated */
-
-};
-
-extern struct mbstat mbstat;
-extern int mbuf_alloced;
-extern struct mbuf m_freelist, m_usedlist;
-extern int mbuf_max;
-
-void m_init _P((void));
-void msize_init _P((void));
-struct mbuf * m_get _P((void));
-void m_free _P((struct mbuf *));
-void m_cat _P((register struct mbuf *, register struct mbuf *));
-void m_inc _P((struct mbuf *, int));
-void m_adj _P((struct mbuf *, int));
-int m_copy _P((struct mbuf *, struct mbuf *, int, int));
-struct mbuf * dtom _P((void *));
+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
projects / qemu.git / blobdiff