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-/*-
- *
- * ===================================
- * HARP | Host ATM Research Platform
- * ===================================
- *
- *
- * This Host ATM Research Platform ("HARP") file (the "Software") is
- * made available by Network Computing Services, Inc. ("NetworkCS")
- * "AS IS". NetworkCS does not provide maintenance, improvements or
- * support of any kind.
- *
- * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
- * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
- * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
- * In no event shall NetworkCS be responsible for any damages, including
- * but not limited to consequential damages, arising from or relating to
- * any use of the Software or related support.
- *
- * Copyright 1994-1998 Network Computing Services, Inc.
- *
- * Copies of this Software may be made, however, the above copyright
- * notice must be reproduced on all copies.
- *
- * @(#) $FreeBSD$
- *
- */
-
-/*
- * System Configuration
- * --------------------
- *
- * Porting aides
- *
- */
-
-#ifndef _NETATM_PORT_H
-#define _NETATM_PORT_H
-
-
-#ifdef _KERNEL
-/*
- * Kernel buffers
- *
- * KBuffer Typedef for a kernel buffer.
- *
- * KB_NEXT(bfr) Access next buffer in chain (r/w).
- * KB_LEN(bfr) Access length of data in this buffer (r/w).
- * KB_QNEXT(bfr) Access next buffer in queue (r/w).
- *
- * KB_ALLOC(bfr, size, flags, type)
- * Allocates a new kernel buffer of at least size bytes.
- * KB_ALLOCPKT(bfr, size, flags, type)
- * Allocates a new kernel packet header buffer of at
- * least size bytes.
- * KB_ALLOCEXT(bfr, size, flags, type)
- * Allocates a new kernel buffer with external storage
- * of at least size bytes.
- * KB_FREEONE(bfr, nxt) Free buffer bfr and set next buffer in chain in nxt.
- * KB_FREEALL(bfr) Free bfr's entire buffer chain.
- * KB_COPY(bfr, off, len, new, flags)
- * Copy len bytes of user data from buffer bfr starting at
- * byte offset off and return new buffer chain in new.
- * If len is KB_COPYALL, copy until end of chain.
- * KB_COPYDATA(bfr, off, len, datap)
- * Copy data from buffer bfr starting at byte offset off
- * for len bytes into the data area pointed to by datap.
- * Returns the number of bytes not copied to datap.
- * KB_PULLUP(bfr, n, new)
- * Get at least the first n bytes of data in the buffer
- * chain headed by bfr contiguous in the first buffer.
- * Returns the (potentially new) head of the chain in new.
- * On failure the chain is freed and NULL is returned.
- * KB_LINKHEAD(new, head)
- * Link the kernel buffer new at the head of the buffer
- * chain headed by head. If both new and head are
- * packet header buffers, new will become the packet
- * header for the chain.
- * KB_LINK(new, prev)
- * Link the kernel buffer new into the buffer chain
- * after the buffer prev.
- * KB_UNLINKHEAD(head, next)
- * Unlink the kernel buffer from the head of the buffer
- * chain headed by head. The buffer head will be freed
- * and the new chain head will be placed in next.
- * KB_UNLINK(old, prev, next)
- * Unlink the kernel buffer old with previous buffer prev
- * from its buffer chain. The following buffer in the
- * chain will be placed in next and the buffer old will
- * be freed.
- * KB_ISPKT(bfr) Tests whether bfr is a packet header buffer.
- * KB_ISEXT(bfr) Tests whether bfr has external storage.
- * KB_BFRSTART(bfr, x, t)
- * Sets x (cast to type t) to point to the start of the
- * buffer space in bfr.
- * KB_BFREND(bfr, x, t)
- * Sets x (cast to type t) to point one byte past the end
- * of the buffer space in bfr.
- * KB_BFRLEN(bfr) Returns length of buffer space in bfr.
- * KB_DATASTART(bfr, x, t)
- * Sets x (cast to type t) to point to the start of the
- * buffer data contained in bfr.
- * KB_DATAEND(bfr, x, t)
- * Sets x (cast to type t) to point one byte past the end
- * of the buffer data contained in bfr.
- * KB_HEADSET(bfr, n) Sets the start address for buffer data in buffer bfr to
- * n bytes from the beginning of the buffer space.
- * KB_HEADMOVE(bfr, n) Adjust buffer data controls to move data down (n > 0)
- * or up (n < 0) n bytes in the buffer bfr.
- * KB_HEADADJ(bfr, n) Adjust buffer data controls to add (n > 0) or subtract
- * (n < 0) n bytes of data to/from the beginning of bfr.
- * KB_TAILADJ(bfr, n) Adjust buffer data controls to add (n > 0) or subtract
- * (n < 0) n bytes of data to/from the end of bfr.
- * KB_TAILALIGN(bfr, n) Set buffer data controls to place an object of size n
- * at the end of bfr, longword aligned.
- * KB_HEADROOM(bfr, n) Set n to the amount of buffer space available before
- * the start of data in bfr.
- * KB_TAILROOM(bfr, n) Set n to the amount of buffer space available after
- * the end of data in bfr.
- * KB_PLENGET(bfr, n) Set n to bfr's packet length.
- * KB_PLENSET(bfr, n) Set bfr's packet length to n.
- * KB_PLENADJ(bfr, n) Adjust total packet length by n bytes.
- *
- */
-#include <sys/mbuf.h>
-typedef struct mbuf KBuffer;
-
-#define KB_F_WAIT M_WAIT
-#define KB_F_NOWAIT M_DONTWAIT
-
-#define KB_T_HEADER MT_HEADER
-#define KB_T_DATA MT_DATA
-
-#define KB_COPYALL M_COPYALL
-
-#define KB_NEXT(bfr) (bfr)->m_next
-#define KB_LEN(bfr) (bfr)->m_len
-#define KB_QNEXT(bfr) (bfr)->m_nextpkt
-#define KB_ALLOC(bfr, size, flags, type) { \
- if ((size) <= MLEN) { \
- MGET((bfr), (flags), (type)); \
- } else \
- (bfr) = NULL; \
-}
-#define KB_ALLOCPKT(bfr, size, flags, type) { \
- if ((size) <= MHLEN) { \
- MGETHDR((bfr), (flags), (type)); \
- } else \
- (bfr) = NULL; \
-}
-#define KB_ALLOCEXT(bfr, size, flags, type) { \
- if ((size) <= MCLBYTES) { \
- MGET((bfr), (flags), (type)); \
- if ((bfr) != NULL) { \
- MCLGET((bfr), (flags)); \
- if (((bfr)->m_flags & M_EXT) == 0) { \
- m_freem((bfr)); \
- (bfr) = NULL; \
- } \
- } \
- } else \
- (bfr) = NULL; \
-}
-#define KB_FREEONE(bfr, nxt) { \
- (nxt) = m_free(bfr); \
-}
-#define KB_FREEALL(bfr) { \
- m_freem(bfr); \
-}
-#define KB_COPY(bfr, off, len, new, flags) { \
- (new) = m_copym((bfr), (off), (len), (flags)); \
-}
-#define KB_COPYDATA(bfr, off, len, datap) \
- (m_copydata((bfr), (off), (len), (datap)), 0)
-#define KB_PULLUP(bfr, n, new) { \
- (new) = m_pullup((bfr), (n)); \
-}
-#define KB_LINKHEAD(new, head) { \
- if ((head) && KB_ISPKT(new) && KB_ISPKT(head)) {\
- M_MOVE_PKTHDR((new), (head)); \
- } \
- (new)->m_next = (head); \
-}
-#define KB_LINK(new, prev) { \
- (new)->m_next = (prev)->m_next; \
- (prev)->m_next = (new); \
-}
-#define KB_UNLINKHEAD(head, next) { \
- (next) = m_free((head)); \
- (head) = NULL; \
-}
-#define KB_UNLINK(old, prev, next) { \
- (next) = m_free((old)); \
- (old) = NULL; \
- (prev)->m_next = (next); \
-}
-#define KB_ISPKT(bfr) (((bfr)->m_flags & M_PKTHDR) != 0)
-#define KB_ISEXT(bfr) (((bfr)->m_flags & M_EXT) != 0)
-#define KB_BFRSTART(bfr, x, t) { \
- if ((bfr)->m_flags & M_EXT) \
- (x) = (t)((bfr)->m_ext.ext_buf); \
- else if ((bfr)->m_flags & M_PKTHDR) \
- (x) = (t)(&(bfr)->m_pktdat); \
- else \
- (x) = (t)((bfr)->m_dat); \
-}
-#define KB_BFREND(bfr, x, t) { \
- if ((bfr)->m_flags & M_EXT) \
- (x) = (t)((bfr)->m_ext.ext_buf + (bfr)->m_ext.ext_size);\
- else if ((bfr)->m_flags & M_PKTHDR) \
- (x) = (t)(&(bfr)->m_pktdat + MHLEN); \
- else \
- (x) = (t)((bfr)->m_dat + MLEN); \
-}
-#define KB_BFRLEN(bfr) \
- (((bfr)->m_flags & M_EXT) ? (bfr)->m_ext.ext_size : \
- (((bfr)->m_flags & M_PKTHDR) ? MHLEN : MLEN))
-#define KB_DATASTART(bfr, x, t) { \
- (x) = mtod((bfr), t); \
-}
-#define KB_DATAEND(bfr, x, t) { \
- (x) = (t)(mtod((bfr), caddr_t) + (bfr)->m_len); \
-}
-#define KB_HEADSET(bfr, n) { \
- if ((bfr)->m_flags & M_EXT) \
- (bfr)->m_data = (bfr)->m_ext.ext_buf + (n); \
- else if ((bfr)->m_flags & M_PKTHDR) \
- (bfr)->m_data = (bfr)->m_pktdat + (n); \
- else \
- (bfr)->m_data = (bfr)->m_dat + (n); \
-}
-#define KB_HEADMOVE(bfr, n) { \
- (bfr)->m_data += (n); \
-}
-#define KB_HEADADJ(bfr, n) { \
- (bfr)->m_len += (n); \
- (bfr)->m_data -= (n); \
-}
-#define KB_TAILADJ(bfr, n) { \
- (bfr)->m_len += (n); \
-}
-#define KB_TAILALIGN(bfr, n) { \
- (bfr)->m_len = (n); \
- if ((bfr)->m_flags & M_EXT) \
- (bfr)->m_data = (caddr_t)(((uintptr_t)(bfr)->m_ext.ext_buf \
- + (bfr)->m_ext.ext_size - (n)) & ~(sizeof(long) - 1));\
- else \
- (bfr)->m_data = (caddr_t)(((uintptr_t)(bfr)->m_dat + MLEN - (n)) \
- & ~(sizeof(long) - 1)); \
-}
-#define KB_HEADROOM(bfr, n) { \
- /* N = m_leadingspace(BFR) XXX */ \
- (n) = ((bfr)->m_flags & M_EXT ? (bfr)->m_data - (bfr)->m_ext.ext_buf : \
- (bfr)->m_flags & M_PKTHDR ? (bfr)->m_data - (bfr)->m_pktdat : \
- (bfr)->m_data - (bfr)->m_dat); \
-}
-#define KB_TAILROOM(bfr, n) { \
- (n) = M_TRAILINGSPACE(bfr); \
-}
-#define KB_PLENGET(bfr, n) { \
- (n) = (bfr)->m_pkthdr.len; \
-}
-#define KB_PLENSET(bfr, n) { \
- (bfr)->m_pkthdr.len = (n); \
-}
-#define KB_PLENADJ(bfr, n) { \
- (bfr)->m_pkthdr.len += (n); \
-}
-
-
-/*
- * Kernel time
- *
- * KTimeout_ret Typedef for timeout() function return
- *
- * KT_TIME(t) Sets t to the current time.
- *
- */
-typedef void KTimeout_ret;
-#define KT_TIME(t) microtime(&t)
-
-#endif /* _KERNEL */
-
-#ifndef MAX
-#define MAX(a,b) max((a),(b))
-#endif
-#ifndef MIN
-#define MIN(a,b) min((a),(b))
-#endif
-
-#endif /* _NETATM_PORT_H */
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