BSD 4.4 Lite Kernel Sources

1 files changed, 87 insertions, 0 deletions

diff --git a/sys/net/netisr.h b/sys/net/netisr.h
new file mode 100644
index 0000000..e2e4653
--- /dev/null
+++ b/sys/net/netisr.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 1980, 1986, 1989, 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. 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
+ *    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.
+ *
+ *	@(#)netisr.h	8.1 (Berkeley) 6/10/93
+ */
+
+/*
+ * The networking code runs off software interrupts.
+ *
+ * You can switch into the network by doing splnet() and return by splx().
+ * The software interrupt level for the network is higher than the software
+ * level for the clock (so you can enter the network in routines called
+ * at timeout time).
+ */
+#if defined(vax) || defined(tahoe)
+#define	setsoftnet()	mtpr(SIRR, 12)
+#endif
+
+/*
+ * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status
+ * word which is used to de-multiplex a single software
+ * interrupt used for scheduling the network code to calls
+ * on the lowest level routine of each protocol.
+ */
+#define	NETISR_RAW	0		/* same as AF_UNSPEC */
+#define	NETISR_IP	2		/* same as AF_INET */
+#define	NETISR_IMP	3		/* same as AF_IMPLINK */
+#define	NETISR_NS	6		/* same as AF_NS */
+#define	NETISR_ISO	7		/* same as AF_ISO */
+#define	NETISR_CCITT	10		/* same as AF_CCITT */
+#define	NETISR_ARP	18		/* same as AF_LINK */
+
+#define	schednetisr(anisr)	{ netisr |= 1<<(anisr); setsoftnet(); }
+
+#ifdef i386
+/* XXX Temporary -- soon to vanish - wfj */
+#define	NETISR_SCLK	11		/* softclock */
+#define	NETISR_AST	12		/* ast -- resched */
+
+#undef	schednetisr
+#define	schednetisr(anisr)	{\
+	if(netisr == 0) { \
+		softem++; \
+	} \
+	netisr |= 1<<(anisr); \
+}
+#ifndef LOCORE
+#ifdef KERNEL
+int	softem;	
+#endif
+#endif
+#endif /* i386 */
+
+#ifndef LOCORE
+#ifdef KERNEL
+int	netisr;				/* scheduling bits for network */
+#endif
+#endif