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bpf.c
(69.94 KB)
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bpf.h
(14.6 KB)
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bpf_buffer.c
(6.39 KB)
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bpf_buffer.h
(2.04 KB)
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bpf_filter.c
(12.09 KB)
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bpf_jitter.c
(3.43 KB)
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bpf_jitter.h
(3.3 KB)
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bpf_zerocopy.c
(16.12 KB)
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bpf_zerocopy.h
(2.36 KB)
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bpfdesc.h
(6.04 KB)
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bridgestp.c
(55.53 KB)
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bridgestp.h
(13.06 KB)
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debugnet.c
(26.35 KB)
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debugnet.h
(8.54 KB)
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debugnet_inet.c
(12.67 KB)
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debugnet_int.h
(3.11 KB)
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dlt.h
(44.23 KB)
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ethernet.h
(22.17 KB)
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firewire.h
(3.95 KB)
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ieee8023ad_lacp.c
(53.91 KB)
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ieee8023ad_lacp.h
(9.22 KB)
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ieee_oui.h
(3.64 KB)
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if.c
(105.86 KB)
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if.h
(22.3 KB)
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if_arp.h
(5.41 KB)
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if_bridge.c
(89.97 KB)
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if_bridgevar.h
(11.54 KB)
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if_clone.c
(17.42 KB)
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if_clone.h
(3.38 KB)
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if_dead.c
(3.83 KB)
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if_debug.c
(4.02 KB)
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if_disc.c
(5.95 KB)
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if_dl.h
(3.56 KB)
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if_edsc.c
(9.93 KB)
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if_enc.c
(12.02 KB)
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if_enc.h
(1.65 KB)
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if_epair.c
(27.75 KB)
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if_ethersubr.c
(37.23 KB)
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if_fwsubr.c
(19.22 KB)
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if_gif.c
(16.66 KB)
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if_gif.h
(4.16 KB)
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if_gre.c
(18.8 KB)
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if_gre.h
(5.69 KB)
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if_infiniband.c
(14.99 KB)
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if_ipsec.c
(24.98 KB)
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if_ipsec.h
(1.62 KB)
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if_lagg.c
(62.68 KB)
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if_lagg.h
(8.94 KB)
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if_llatbl.c
(20.5 KB)
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if_llatbl.h
(9.52 KB)
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if_llc.h
(4.53 KB)
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if_loop.c
(10.62 KB)
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if_me.c
(16.73 KB)
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if_media.c
(12.81 KB)
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if_media.h
(36.45 KB)
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if_mib.c
(4.6 KB)
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if_mib.h
(5.58 KB)
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if_pflog.h
(2.24 KB)
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if_pfsync.h
(6.85 KB)
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if_sppp.h
(8.37 KB)
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if_spppfr.c
(15.11 KB)
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if_spppsubr.c
(132.44 KB)
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if_stf.c
(19.3 KB)
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if_tap.h
(2.54 KB)
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if_tun.h
(1.43 KB)
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if_tuntap.c
(47.67 KB)
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if_types.h
(12.2 KB)
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if_var.h
(29.92 KB)
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if_vlan.c
(53.04 KB)
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if_vlan_var.h
(6.1 KB)
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if_vxlan.c
(88.14 KB)
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if_vxlan.h
(4.71 KB)
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ifdi_if.m
(8.4 KB)
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iflib.c
(185.91 KB)
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iflib.h
(14.41 KB)
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iflib_clone.c
(7.37 KB)
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iflib_private.h
(2.31 KB)
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ifq.h
(12.2 KB)
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infiniband.h
(2.64 KB)
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mp_ring.c
(13.3 KB)
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mp_ring.h
(2.77 KB)
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mppc.h
(2.37 KB)
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mppcc.c
(8.88 KB)
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mppcd.c
(7.89 KB)
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netisr.c
(44.33 KB)
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netisr.h
(9.31 KB)
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netisr_internal.h
(4.77 KB)
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netmap.h
(32.93 KB)
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netmap_legacy.h
(9.49 KB)
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netmap_user.h
(30.33 KB)
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netmap_virt.h
(3.89 KB)
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paravirt.h
(6.91 KB)
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pfil.c
(16.83 KB)
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pfil.h
(5.86 KB)
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pfkeyv2.h
(14.54 KB)
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pfvar.h
(48.83 KB)
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ppp_defs.h
(5.41 KB)
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radix.c
(30.87 KB)
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radix.h
(6.83 KB)
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raw_cb.c
(3.77 KB)
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raw_cb.h
(3.04 KB)
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raw_usrreq.c
(6.26 KB)
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rndis.h
(10.74 KB)
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route
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route.c
(19.25 KB)
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route.h
(16.54 KB)
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rss_config.c
(14.12 KB)
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rss_config.h
(4.69 KB)
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rtsock.c
(62.94 KB)
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sff8436.h
(8.3 KB)
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sff8472.h
(18.95 KB)
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slcompress.c
(16.25 KB)
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slcompress.h
(6.4 KB)
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toeplitz.c
(1.96 KB)
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toeplitz.h
(1.72 KB)
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vnet.c
(22.42 KB)
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vnet.h
(14.62 KB)
Editing: bpf_buffer.c
/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 2007 Seccuris Inc. * All rights reserved. * * This software was developed by Robert N. M. Watson under contract to * Seccuris Inc. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * * Copyright (c) 1990, 1991, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from the Stanford/CMU enet packet filter, * (net/enet.c) distributed as part of 4.3BSD, and code contributed * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence * Berkeley Laboratory. * * 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 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. * * @(#)bpf.c 8.4 (Berkeley) 1/9/95 */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include "opt_bpf.h" #include <sys/param.h> #include <sys/lock.h> #include <sys/malloc.h> #include <sys/mbuf.h> #include <sys/mutex.h> #include <sys/socket.h> #include <sys/uio.h> #include <sys/kernel.h> #include <sys/sysctl.h> #include <net/if.h> #include <net/bpf.h> #include <net/bpf_buffer.h> #include <net/bpfdesc.h> /* * Implement historical kernel memory buffering model for BPF: two malloc(9) * kernel buffers are hung off of the descriptor. The size is fixed prior to * attaching to an ifnet, ad cannot be changed after that. read(2) simply * copies the data to user space using uiomove(9). */ static int bpf_bufsize = 4096; SYSCTL_INT(_net_bpf, OID_AUTO, bufsize, CTLFLAG_RW, &bpf_bufsize, 0, "Default capture buffer size in bytes"); static int bpf_maxbufsize = BPF_MAXBUFSIZE; SYSCTL_INT(_net_bpf, OID_AUTO, maxbufsize, CTLFLAG_RW, &bpf_maxbufsize, 0, "Maximum capture buffer in bytes"); /* * Simple data copy to the current kernel buffer. */ void bpf_buffer_append_bytes(struct bpf_d *d, caddr_t buf, u_int offset, void *src, u_int len) { u_char *src_bytes; src_bytes = (u_char *)src; bcopy(src_bytes, buf + offset, len); } /* * Scatter-gather data copy from an mbuf chain to the current kernel buffer. */ void bpf_buffer_append_mbuf(struct bpf_d *d, caddr_t buf, u_int offset, void *src, u_int len) { const struct mbuf *m; u_char *dst; m = (struct mbuf *)src; dst = (u_char *)buf + offset; m_copydata(m, 0, len, dst); } /* * Free BPF kernel buffers on device close. */ void bpf_buffer_free(struct bpf_d *d) { if (d->bd_sbuf != NULL) free(d->bd_sbuf, M_BPF); if (d->bd_hbuf != NULL) free(d->bd_hbuf, M_BPF); if (d->bd_fbuf != NULL) free(d->bd_fbuf, M_BPF); #ifdef INVARIANTS d->bd_sbuf = d->bd_hbuf = d->bd_fbuf = (caddr_t)~0; #endif } /* * This is a historical initialization that occurs when the BPF descriptor is * first opened. It does not imply selection of a buffer mode, so we don't * allocate buffers here. */ void bpf_buffer_init(struct bpf_d *d) { d->bd_bufsize = bpf_bufsize; } /* * Allocate or resize buffers. */ int bpf_buffer_ioctl_sblen(struct bpf_d *d, u_int *i) { u_int size; caddr_t fbuf, sbuf; size = *i; if (size > bpf_maxbufsize) *i = size = bpf_maxbufsize; else if (size < BPF_MINBUFSIZE) *i = size = BPF_MINBUFSIZE; /* Allocate buffers immediately */ fbuf = (caddr_t)malloc(size, M_BPF, M_WAITOK); sbuf = (caddr_t)malloc(size, M_BPF, M_WAITOK); BPFD_LOCK(d); if (d->bd_bif != NULL) { /* Interface already attached, unable to change buffers */ BPFD_UNLOCK(d); free(fbuf, M_BPF); free(sbuf, M_BPF); return (EINVAL); } /* Free old buffers if set */ if (d->bd_fbuf != NULL) free(d->bd_fbuf, M_BPF); if (d->bd_sbuf != NULL) free(d->bd_sbuf, M_BPF); /* Fill in new data */ d->bd_bufsize = size; d->bd_fbuf = fbuf; d->bd_sbuf = sbuf; d->bd_hbuf = NULL; d->bd_slen = 0; d->bd_hlen = 0; BPFD_UNLOCK(d); return (0); } /* * Copy buffer storage to user space in read(). */ int bpf_buffer_uiomove(struct bpf_d *d, caddr_t buf, u_int len, struct uio *uio) { return (uiomove(buf, len, uio)); }
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