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📄 bpf.h(14.6 KB)
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📄 bpf_jitter.h(3.3 KB)
📄 bpf_zerocopy.h(2.36 KB)
📄 bpfdesc.h(6.04 KB)
📄 bridgestp.h(13.06 KB)
📄 debugnet.h(8.54 KB)
📄 debugnet_int.h(3.11 KB)
📄 dlt.h(44.23 KB)
📄 ethernet.h(22.17 KB)
📄 firewire.h(3.95 KB)
📄 ieee8023ad_lacp.h(9.22 KB)
📄 ieee_oui.h(3.64 KB)
📄 if.h(22.3 KB)
📄 if_arp.h(5.41 KB)
📄 if_bridgevar.h(11.54 KB)
📄 if_clone.h(3.38 KB)
📄 if_dl.h(3.56 KB)
📄 if_enc.h(1.65 KB)
📄 if_gif.h(4.16 KB)
📄 if_gre.h(5.69 KB)
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📄 if_lagg.h(8.94 KB)
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📄 if_media.h(36.45 KB)
📄 if_mib.h(5.58 KB)
📄 if_pflog.h(2.24 KB)
📄 if_pfsync.h(6.85 KB)
📄 if_sppp.h(8.37 KB)
📄 if_tap.h(2.54 KB)
📄 if_tun.h(1.43 KB)
📄 if_types.h(12.2 KB)
📄 if_var.h(29.92 KB)
📄 if_vlan_var.h(6.1 KB)
📄 if_vxlan.h(4.71 KB)
📄 iflib.h(14.41 KB)
📄 iflib_private.h(2.31 KB)
📄 ifq.h(12.2 KB)
📄 infiniband.h(2.64 KB)
📄 mp_ring.h(2.77 KB)
📄 mppc.h(2.37 KB)
📄 netisr.h(9.31 KB)
📄 netisr_internal.h(4.77 KB)
📄 netmap.h(32.93 KB)
📄 netmap_legacy.h(9.49 KB)
📄 netmap_user.h(30.33 KB)
📄 netmap_virt.h(3.89 KB)
📄 paravirt.h(6.91 KB)
📄 pfil.h(5.86 KB)
📄 pfkeyv2.h(14.54 KB)
📄 pfvar.h(48.83 KB)
📄 ppp_defs.h(5.41 KB)
📄 radix.h(6.83 KB)
📄 raw_cb.h(3.04 KB)
📄 rndis.h(10.74 KB)
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📄 route.h(16.54 KB)
📄 rss_config.h(4.69 KB)
📄 sff8436.h(8.3 KB)
📄 sff8472.h(18.95 KB)
📄 slcompress.h(6.4 KB)
📄 toeplitz.h(1.72 KB)
📄 vnet.h(14.62 KB)

Editing: bpf_jitter.h

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (C) 2002-2003 NetGroup, Politecnico di Torino (Italy)
 * Copyright (C) 2005-2009 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.
 *
 * $FreeBSD$
 */

#ifndef _NET_BPF_JITTER_H_
#define _NET_BPF_JITTER_H_

#ifdef _KERNEL
MALLOC_DECLARE(M_BPFJIT);
#endif

extern int bpf_jitter_enable;

/*
 * Prototype of a filtering function created by the jitter.
 *
 * The syntax and the meaning of the parameters is analogous to the one of
 * bpf_filter(). Notice that the filter is not among the parameters because
 * it is hardwired in the function.
 */
typedef u_int (*bpf_filter_func)(u_char *, u_int, u_int);

/* Structure describing a native filtering program created by the jitter. */
typedef struct bpf_jit_filter {
	/* The native filtering binary, in the form of a bpf_filter_func. */
	bpf_filter_func	func;
	size_t		size;
} bpf_jit_filter;

/*
 * BPF jitter, builds a machine function from a BPF program.
 *
 * param fp	The BPF pseudo-assembly filter that will be translated
 *		into native code.
 * param nins	Number of instructions of the input filter.
 * return	The bpf_jit_filter structure containing the native filtering
 *		binary.
 *
 * bpf_jitter allocates the buffers for the new native filter and
 * then translates the program pointed by fp calling bpf_jit_compile().
 */
bpf_jit_filter	*bpf_jitter(struct bpf_insn *fp, int nins);

/*
 * Deletes a filtering function that was previously created by bpf_jitter().
 *
 * param filter	The filter to destroy.
 *
 * This function frees the variuos buffers (code, memory, etc.) associated
 * with a filtering function.
 */
void		bpf_destroy_jit_filter(bpf_jit_filter *filter);

/*
 * Declarations for machine-dependent functions.
 */
struct bpf_insn;

bpf_filter_func	bpf_jit_compile(struct bpf_insn *, u_int, size_t *);

#endif	/* _NET_BPF_JITTER_H_ */

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