2529f56ed3
summits at BSDCan and BSDCam in 2017. The TCP Blackbox Recorder allows you to capture events on a TCP connection in a ring buffer. It stores metadata with the event. It optionally stores the TCP header associated with an event (if the event is associated with a packet) and also optionally stores information on the sockets. It supports setting a log ID on a TCP connection and using this to correlate multiple connections that share a common log ID. You can log connections in different modes. If you are doing a coordinated test with a particular connection, you may tell the system to put it in mode 4 (continuous dump). Or, if you just want to monitor for errors, you can put it in mode 1 (ring buffer) and dump all the ring buffers associated with the connection ID when we receive an error signal for that connection ID. You can set a default mode that will be applied to a particular ratio of incoming connections. You can also manually set a mode using a socket option. This commit includes only basic probes. rrs@ has added quite an abundance of probes in his TCP development work. He plans to commit those soon. There are user-space programs which we plan to commit as ports. These read the data from the log device and output pcapng files, and then let you analyze the data (and metadata) in the pcapng files. Reviewed by: gnn (previous version) Obtained from: Netflix, Inc. Relnotes: yes Differential Revision: https://reviews.freebsd.org/D11085
160 lines
5.6 KiB
C
160 lines
5.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1992, 1993
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* Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)netstat.h 8.2 (Berkeley) 1/4/94
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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#define satosin(sa) ((struct sockaddr_in *)(sa))
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#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
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#define sin6tosa(sin6) ((struct sockaddr *)(sin6))
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extern int Aflag; /* show addresses of protocol control block */
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extern int aflag; /* show all sockets (including servers) */
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extern int bflag; /* show i/f total bytes in/out */
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extern int dflag; /* show i/f dropped packets */
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extern int gflag; /* show group (multicast) routing or stats */
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extern int hflag; /* show counters in human readable format */
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extern int iflag; /* show interfaces */
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extern int Lflag; /* show size of listen queues */
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extern int mflag; /* show memory stats */
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extern int noutputs; /* how much outputs before we exit */
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extern int numeric_addr; /* show addresses numerically */
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extern int numeric_port; /* show ports numerically */
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extern int Pflag; /* show TCP log ID */
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extern int rflag; /* show routing tables (or routing stats) */
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extern int Rflag; /* show flowid / RSS information */
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extern int sflag; /* show protocol statistics */
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extern int Tflag; /* show TCP control block info */
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extern int Wflag; /* wide display */
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extern int xflag; /* extended display, includes all socket buffer info */
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extern int zflag; /* zero stats */
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extern int interval; /* repeat interval for i/f stats */
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extern char *interface; /* desired i/f for stats, or NULL for all i/fs */
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extern int unit; /* unit number for above */
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extern int live; /* true if we are examining a live system */
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typedef int kreadfn_t(u_long, void *, size_t);
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int fetch_stats(const char *, u_long, void *, size_t, kreadfn_t);
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int fetch_stats_ro(const char *, u_long, void *, size_t, kreadfn_t);
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int kread(u_long addr, void *buf, size_t size);
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uint64_t kread_counter(u_long addr);
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int kread_counters(u_long addr, void *buf, size_t size);
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void kset_dpcpu(u_int);
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const char *plural(uintmax_t);
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const char *plurales(uintmax_t);
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const char *pluralies(uintmax_t);
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struct sockaddr;
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struct socket;
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struct xsocket;
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int sotoxsocket(struct socket *, struct xsocket *);
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void protopr(u_long, const char *, int, int);
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void tcp_stats(u_long, const char *, int, int);
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void udp_stats(u_long, const char *, int, int);
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#ifdef SCTP
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void sctp_protopr(u_long, const char *, int, int);
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void sctp_stats(u_long, const char *, int, int);
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#endif
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void arp_stats(u_long, const char *, int, int);
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void ip_stats(u_long, const char *, int, int);
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void icmp_stats(u_long, const char *, int, int);
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void igmp_stats(u_long, const char *, int, int);
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void pim_stats(u_long, const char *, int, int);
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void carp_stats(u_long, const char *, int, int);
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void pfsync_stats(u_long, const char *, int, int);
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#ifdef IPSEC
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void ipsec_stats(u_long, const char *, int, int);
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void esp_stats(u_long, const char *, int, int);
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void ah_stats(u_long, const char *, int, int);
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void ipcomp_stats(u_long, const char *, int, int);
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#endif
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#ifdef INET
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struct in_addr;
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char *inetname(struct in_addr *);
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#endif
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#ifdef INET6
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struct in6_addr;
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char *inet6name(struct in6_addr *);
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void ip6_stats(u_long, const char *, int, int);
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void ip6_ifstats(char *);
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void icmp6_stats(u_long, const char *, int, int);
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void icmp6_ifstats(char *);
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void pim6_stats(u_long, const char *, int, int);
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void rip6_stats(u_long, const char *, int, int);
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void mroute6pr(void);
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void mrt6_stats(void);
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struct sockaddr_in6;
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struct in6_addr;
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void in6_fillscopeid(struct sockaddr_in6 *);
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void inet6print(const char *, struct in6_addr *, int, const char *, int);
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#endif /*INET6*/
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#ifdef IPSEC
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void pfkey_stats(u_long, const char *, int, int);
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#endif
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void mbpr(void *, u_long);
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void netisr_stats(void);
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void hostpr(u_long, u_long);
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void impstats(u_long, u_long);
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void intpr(void (*)(char *), int);
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void pr_family(int);
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void rt_stats(void);
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char *routename(struct sockaddr *, int);
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const char *netname(struct sockaddr *, struct sockaddr *);
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void routepr(int, int);
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#ifdef NETGRAPH
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void netgraphprotopr(u_long, const char *, int, int);
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#endif
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void unixpr(u_long, u_long, u_long, u_long, u_long, bool *);
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void mroutepr(void);
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void mrt_stats(void);
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void bpf_stats(char *);
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