Moved netisr code from kern/kern_intr.c to net/netisr.c as threatened in a

comment.

1 files changed, 116 insertions, 0 deletions

diff --git a/sys/net/netisr.c b/sys/net/netisr.c
new file mode 100644
index 0000000..cb7bc32
--- /dev/null
+++ b/sys/net/netisr.c
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
+ * 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 unmodified, 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/proc.h>
+#include <sys/interrupt.h>
+#include <sys/kernel.h>
+
+#include <net/netisr.h>
+
+static void swi_net(void *);
+
+void *net_ih;
+volatile unsigned int netisr;
+void (*netisrs[32])(void);
+
+void
+legacy_setsoftnet(void)
+{
+	swi_sched(net_ih, 0);
+}
+
+int
+register_netisr(int num, netisr_t *handler)
+{
+	
+	if (num < 0 || num >= (sizeof(netisrs)/sizeof(*netisrs)) ) {
+		printf("register_netisr: bad isr number: %d\n", num);
+		return (EINVAL);
+	}
+	netisrs[num] = handler;
+	return (0);
+}
+
+int
+unregister_netisr(int num)
+{
+	
+	if (num < 0 || num >= (sizeof(netisrs)/sizeof(*netisrs)) ) {
+		printf("unregister_netisr: bad isr number: %d\n", num);
+		return (EINVAL);
+	}
+	netisrs[num] = NULL;
+	return (0);
+}
+
+#ifdef DEVICE_POLLING
+void netisr_pollmore(void);
+#endif
+
+static void
+swi_net(void *dummy)
+{
+	u_int bits;
+	int i;
+
+#ifdef DEVICE_POLLING
+    for (;;) {
+	int pollmore;
+#endif
+	bits = atomic_readandclear_int(&netisr);
+#ifdef DEVICE_POLLING
+	if (bits == 0)
+		return;
+	pollmore = bits & (1 << NETISR_POLL);
+#endif
+	while ((i = ffs(bits)) != 0) {
+		i--;
+		if (netisrs[i] != NULL)
+			netisrs[i]();
+		else
+			printf("swi_net: unregistered isr number: %d.\n", i);
+		bits &= ~(1 << i);
+	}
+#ifdef DEVICE_POLLING
+	if (pollmore)
+		netisr_pollmore();
+    }
+#endif
+}
+
+static void
+start_netisr(void *dummy)
+{
+
+	if (swi_add(NULL, "net", swi_net, NULL, SWI_NET, 0, &net_ih))
+		panic("start_netisr");
+}
+SYSINIT(start_netisr, SI_SUB_SOFTINTR, SI_ORDER_FIRST, start_netisr, NULL)