Initial import

Code is based on FreeBSD 8.2 with USB support from Sebastian Huber
and Thomas Doerfler. Initial TCP/IP stack work is from Kevel Kirspel.

1 files changed, 143 insertions, 0 deletions

diff --git a/rtems/freebsd/net/bpf_jitter.c b/rtems/freebsd/net/bpf_jitter.c
new file mode 100644
index 00000000..df7c5848
--- /dev/null
+++ b/rtems/freebsd/net/bpf_jitter.c
@@ -0,0 +1,143 @@
+#include <rtems/freebsd/machine/rtems-bsd-config.h>
+
+/*-
+ * Copyright (C) 2002-2003 NetGroup, Politecnico di Torino (Italy)
+ * Copyright (C) 2005-2008 Jung-uk Kim <jkim@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, 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 Politecnico di Torino 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 COPYRIGHT HOLDERS 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 COPYRIGHT
+ * OWNER 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.
+ */
+
+#include <rtems/freebsd/sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#ifdef _KERNEL
+#include <rtems/freebsd/local/opt_bpf.h>
+
+#include <rtems/freebsd/sys/param.h>
+#include <rtems/freebsd/sys/kernel.h>
+#include <rtems/freebsd/sys/malloc.h>
+#include <rtems/freebsd/sys/mbuf.h>
+#include <rtems/freebsd/sys/sysctl.h>
+#else
+#include <rtems/freebsd/stdlib.h>
+#include <rtems/freebsd/string.h>
+#include <rtems/freebsd/sys/types.h>
+#endif
+
+#include <rtems/freebsd/net/bpf.h>
+#include <rtems/freebsd/net/bpf_jitter.h>
+
+bpf_filter_func	bpf_jit_compile(struct bpf_insn *, u_int, int *);
+
+static u_int	bpf_jit_accept_all(u_char *, u_int, u_int);
+
+#ifdef _KERNEL
+MALLOC_DEFINE(M_BPFJIT, "BPF_JIT", "BPF JIT compiler");
+
+SYSCTL_NODE(_net, OID_AUTO, bpf_jitter, CTLFLAG_RW, 0, "BPF JIT compiler");
+int bpf_jitter_enable = 1;
+SYSCTL_INT(_net_bpf_jitter, OID_AUTO, enable, CTLFLAG_RW,
+    &bpf_jitter_enable, 0, "enable BPF JIT compiler");
+
+bpf_jit_filter *
+bpf_jitter(struct bpf_insn *fp, int nins)
+{
+	bpf_jit_filter *filter;
+
+	/* Allocate the filter structure */
+	filter = (struct bpf_jit_filter *)malloc(sizeof(*filter),
+	    M_BPFJIT, M_NOWAIT | M_ZERO);
+	if (filter == NULL)
+		return (NULL);
+
+	/* No filter means accept all */
+	if (fp == NULL || nins == 0) {
+		filter->func = bpf_jit_accept_all;
+		return (filter);
+	}
+
+	/* Create the binary */
+	if ((filter->func = bpf_jit_compile(fp, nins, filter->mem)) == NULL) {
+		free(filter, M_BPFJIT);
+		return (NULL);
+	}
+
+	return (filter);
+}
+
+void
+bpf_destroy_jit_filter(bpf_jit_filter *filter)
+{
+
+	if (filter->func != bpf_jit_accept_all)
+		free(filter->func, M_BPFJIT);
+	free(filter, M_BPFJIT);
+}
+#else
+bpf_jit_filter *
+bpf_jitter(struct bpf_insn *fp, int nins)
+{
+	bpf_jit_filter *filter;
+
+	/* Allocate the filter structure */
+	filter = (struct bpf_jit_filter *)malloc(sizeof(*filter));
+	if (filter == NULL)
+		return (NULL);
+	memset(filter, 0, sizeof(*filter));
+
+	/* No filter means accept all */
+	if (fp == NULL || nins == 0) {
+		filter->func = bpf_jit_accept_all;
+		return (filter);
+	}
+
+	/* Create the binary */
+	if ((filter->func = bpf_jit_compile(fp, nins, filter->mem)) == NULL) {
+		free(filter);
+		return (NULL);
+	}
+
+	return (filter);
+}
+
+void
+bpf_destroy_jit_filter(bpf_jit_filter *filter)
+{
+
+	if (filter->func != bpf_jit_accept_all)
+		free(filter->func);
+	free(filter);
+}
+#endif
+
+static u_int
+bpf_jit_accept_all(__unused u_char *p, __unused u_int wirelen,
+    __unused u_int buflen)
+{
+
+	return ((u_int)-1);
+}