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freebsd-dev/usr.bin/netstat/netstat.h

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style(9) + kread is not a boolean, so check it as such + fix $FreeBSD$ Ids + denote copyrights with /*- + misc whitespace changes.
2008-01-02 23:26:11 +00:00
/*-
General further adoption of SPDX licensing ID tags. Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
2017-11-20 19:49:47 +00:00
* SPDX-License-Identifier: BSD-3-Clause
*
BSD 4.4 Lite Usr.bin Sources
1994-05-27 12:33:43 +00:00
* Copyright (c) 1992, 1993
* Regents of the University of California. 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.
Renumber copyright clause 4 Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00
* 3. Neither the name of the University nor the names of its contributors
BSD 4.4 Lite Usr.bin Sources
1994-05-27 12:33:43 +00:00
* 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.
*
* @(#)netstat.h 8.2 (Berkeley) 1/4/94
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
* $FreeBSD$
BSD 4.4 Lite Usr.bin Sources
1994-05-27 12:33:43 +00:00
*/
#include <sys/cdefs.h>
- Add -W flag support for network column in intpr() (-i flag) and routepr() (-r flag). It is too narrow to show an IPv6 prefix in most cases. - Accept "local" as a synonym of "unix" in protocol family name. - Show a prefix length in CIDR notation when name resolution failed in netname(). - Make routename() and netname() AF-independent and remove unnecessary typecasting from struct sockaddr. - Use getnameinfo(3) to format L2 addr in intpr(). - Fix a bug which showed "Address" when -A flag is specfied in pr_rthdr(). - Replace cryptic GETSA() macro with SA_SIZE(). - Fix declarations shadowing local variables with the same names. - Add more static, remove unused header files and variables. MFC after: 1 week
2015-09-01 08:42:04 +00:00
#define satosin(sa) ((struct sockaddr_in *)(sa))
#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
#define sin6tosa(sin6) ((struct sockaddr *)(sin6))
Add a -W flag that tells netstat not to truncate addresses even if they are too long for the column they're printed in. Move variable definitions out of netstat.h and into main.c. Clean up some warnings.
2001-03-15 20:46:04 +00:00
extern int Aflag; /* show addresses of protocol control block */
extern int aflag; /* show all sockets (including servers) */
extern int bflag; /* show i/f total bytes in/out */
Extend netstat to display TCP stack and detailed congestion state Adding the "-c" option used to show detailed per-connection congestion control state for TCP sessions. This is one summary patch, which adds the relevant variables into xtcpcb. As previous "spare" space is used, these changes are ABI compatible. Reviewed by: tuexen MFC after: 2 weeks Sponsored by: NetApp, Inc. Differential Revision: https://reviews.freebsd.org/D26518
2020-10-09 10:07:41 +00:00
extern int cflag; /* show congestion control stats */
extern int Cflag; /* show congestion control algo and stack */
Add a -W flag that tells netstat not to truncate addresses even if they are too long for the column they're printed in. Move variable definitions out of netstat.h and into main.c. Clean up some warnings.
2001-03-15 20:46:04 +00:00
extern int dflag; /* show i/f dropped packets */
extern int gflag; /* show group (multicast) routing or stats */
Add a new switch -h for interface stats mode, which prints all interface statistics in human readable form. In collaboration with: vsevolod Reviewed by: cperciva
2005-08-18 21:04:12 +00:00
extern int hflag; /* show counters in human readable format */
Add a -W flag that tells netstat not to truncate addresses even if they are too long for the column they're printed in. Move variable definitions out of netstat.h and into main.c. Clean up some warnings.
2001-03-15 20:46:04 +00:00
extern int iflag; /* show interfaces */
extern int Lflag; /* show size of listen queues */
extern int mflag; /* show memory stats */
Add a new option, -q howmany, which when used in conjuction with -w, exits netstat after _howmany_ outputs. Requested by: thomasa Reviewed by: freebsd-net (bms, old version in early 2007) MFC after: 1 month
2010-01-11 03:00:17 +00:00
extern int noutputs; /* how much outputs before we exit */
add the option -S for printing port numbers symbolically but addresses numerically. clean up the CFLAGS in Makefile.
2001-06-15 00:25:44 +00:00
extern int numeric_addr; /* show addresses numerically */
extern int numeric_port; /* show ports numerically */
Add the "TCP Blackbox Recorder" which we discussed at the developer 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
2018-03-22 09:40:08 +00:00
extern int Pflag; /* show TCP log ID */
Add a -W flag that tells netstat not to truncate addresses even if they are too long for the column they're printed in. Move variable definitions out of netstat.h and into main.c. Clean up some warnings.
2001-03-15 20:46:04 +00:00
extern int rflag; /* show routing tables (or routing stats) */
Add -R to netstat to dump RSS/flow information. This is intended to help in diagnostics and debugging of NIC and stack flowid support. Eventually this will grow another column (RSS CPU ID) but that currently isn't cached in the inpcb. There's also no clean flowtype -> flowtype identifier string. This is the mbuf M_HASHTYPE_* values for RSS. Here's some example output: adrian@adrian-hackbox:~/work/freebsd/head/src % netstat -Rn | more Active Internet connections Proto Recv-Q Send-Q Local Address Foreign Address flowid ftype tcp4 0 0 10.11.1.65.22 10.11.1.64.12409 29041942 2 udp4 0 0 127.0.0.1.123 *.* 00000000 0 udp6 0 0 fe80::1%lo0.123 *.* 00000000 0 udp6 0 0 ::1.123 *.* 00000000 0 udp4 0 0 10.11.1.65.123 *.* 00000000 0 Tested: * amd64 system w/ igb NIC; local driver changes to expose RSS flowid in if_igb.
2014-05-19 17:11:43 +00:00
extern int Rflag; /* show flowid / RSS information */
Add a -W flag that tells netstat not to truncate addresses even if they are too long for the column they're printed in. Move variable definitions out of netstat.h and into main.c. Clean up some warnings.
2001-03-15 20:46:04 +00:00
extern int sflag; /* show protocol statistics */
Add new, per connection, statistics for TCP, including: Retransmitted Packets Zero Window Advertisements Out of Order Receives These statistics are available via the -T argument to netstat(1). MFC after: 2 weeks
2010-11-17 18:55:12 +00:00
extern int Tflag; /* show TCP control block info */
Add a -W flag that tells netstat not to truncate addresses even if they are too long for the column they're printed in. Move variable definitions out of netstat.h and into main.c. Clean up some warnings.
2001-03-15 20:46:04 +00:00
extern int Wflag; /* wide display */
Minimize changes CURRENT<->releng7.
2008-09-01 15:04:38 +00:00
extern int xflag; /* extended display, includes all socket buffer info */
Add netstat(1) knob to reset net.inet.{ip|icmp|tcp|udp|igmp}.stats. For example, ``netstat -s -p ip -z'' will show and reset IP stats. PR: bin/17338
2001-06-23 17:17:59 +00:00
extern int zflag; /* zero stats */
BSD 4.4 Lite Usr.bin Sources
1994-05-27 12:33:43 +00:00
Add a -W flag that tells netstat not to truncate addresses even if they are too long for the column they're printed in. Move variable definitions out of netstat.h and into main.c. Clean up some warnings.
2001-03-15 20:46:04 +00:00
extern int interval; /* repeat interval for i/f stats */
BSD 4.4 Lite Usr.bin Sources
1994-05-27 12:33:43 +00:00
Add a -W flag that tells netstat not to truncate addresses even if they are too long for the column they're printed in. Move variable definitions out of netstat.h and into main.c. Clean up some warnings.
2001-03-15 20:46:04 +00:00
extern char *interface; /* desired i/f for stats, or NULL for all i/fs */
extern int unit; /* unit number for above */
BSD 4.4 Lite Usr.bin Sources
1994-05-27 12:33:43 +00:00
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
extern int live; /* true if we are examining a live system */
BSD 4.4 Lite Usr.bin Sources
1994-05-27 12:33:43 +00:00
Print running TCP connection counts with TCP statistics.
2016-03-15 00:19:30 +00:00
typedef int kreadfn_t(u_long, void *, size_t);
int fetch_stats(const char *, u_long, void *, size_t, kreadfn_t);
int fetch_stats_ro(const char *, u_long, void *, size_t, kreadfn_t);
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
int kread(u_long addr, void *buf, size_t size);
- Remove rt_metrics_lite and simply put its members into rtentry. - Use counter(9) for rt_pksent (former rt_rmx.rmx_pksent). This removes another cache trashing ++ from packet forwarding path. - Create zini/fini methods for the rtentry UMA zone. Via initialize mutex and counter in them. - Fix reporting of rmx_pksent to routing socket. - Fix netstat(1) to report "Use" both in kvm(3) and sysctl(3) mode. The change is mostly targeted for stable/10 merge. For head, rt_pksent is expected to just disappear. Discussed with: melifaro Sponsored by: Netflix Sponsored by: Nginx, Inc.
2014-03-05 01:17:47 +00:00
uint64_t kread_counter(u_long addr);
Use new macros to implement ipstat and tcpstat using PCPU counters. Change interface of kread_counters() similar ot kread() in the netstat(1).
2013-07-09 09:43:03 +00:00
int kread_counters(u_long addr, void *buf, size_t size);
Simplify kvm symbol resolution and error handling. The symbol table nl_symbols will eventually be organized into several modules depending on MK_* variables.
2015-09-02 18:51:36 +00:00
void kset_dpcpu(u_int);
Achieve WARNS=2 by using uintmax_t to pass around 64-bit quantities, including to printf(). Using uintmax_t is also robust to further extensions in both the C language and the bitwidth of kernel counters. Tested on: i386 amd64 ia64
2006-07-28 16:09:19 +00:00
const char *plural(uintmax_t);
const char *plurales(uintmax_t);
const char *pluralies(uintmax_t);
Fixed style bugs created in rev.1.27 by removing "__P(" and its closing ")" without removing the space before it.
2003-12-29 04:34:36 +00:00
Teach netstat(1) to print out netisr statistics when given the -Q argument. Currently supports only reporting on live systems via sysctl, kmem support needs to be edded. MFC after: 1 week Sponsored by: Juniper Networks
2010-02-22 15:57:36 +00:00
struct sockaddr;
struct socket;
struct xsocket;
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
int sotoxsocket(struct socket *, struct xsocket *);
void protopr(u_long, const char *, int, int);
void tcp_stats(u_long, const char *, int, int);
void udp_stats(u_long, const char *, int, int);
Adds support for SCTP.
2007-06-09 13:44:09 +00:00
#ifdef SCTP
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
void sctp_protopr(u_long, const char *, int, int);
void sctp_stats(u_long, const char *, int, int);
Adds support for SCTP.
2007-06-09 13:44:09 +00:00
#endif
Add ARP statistics to the kernel and netstat. New counters now exist for: requests sent replies sent requests received replies received packets received total packets dropped due to no ARP entry entrys timed out Duplicate IPs seen The new statistics are seen in the netstat command when it is given the -s command line switch. MFC after: 2 weeks In collaboration with: bz
2009-09-03 21:10:57 +00:00
void arp_stats(u_long, const char *, int, int);
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
void ip_stats(u_long, const char *, int, int);
void icmp_stats(u_long, const char *, int, int);
void igmp_stats(u_long, const char *, int, int);
void pim_stats(u_long, const char *, int, int);
style(9) + kread is not a boolean, so check it as such + fix $FreeBSD$ Ids + denote copyrights with /*- + misc whitespace changes.
2008-01-02 23:26:11 +00:00
void carp_stats(u_long, const char *, int, int);
void pfsync_stats(u_long, const char *, int, int);
udp IPv6 support, IPv6/IPv4 tunneling support in kernel, packet divert at kernel for IPv6/IPv4 translater daemon This includes queue related patch submitted by jburkhol@home.com. Submitted by: queue related patch from jburkhol@home.com Reviewed by: freebsd-arch, cvs-committers Obtained from: KAME project
1999-12-07 17:39:16 +00:00
#ifdef IPSEC
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
void ipsec_stats(u_long, const char *, int, int);
style(9) + kread is not a boolean, so check it as such + fix $FreeBSD$ Ids + denote copyrights with /*- + misc whitespace changes.
2008-01-02 23:26:11 +00:00
void esp_stats(u_long, const char *, int, int);
void ah_stats(u_long, const char *, int, int);
void ipcomp_stats(u_long, const char *, int, int);
Add support for printing IPSEC protocol stats if the kernel was compiled with FAST_IPSEC rather than the KAME IPSEC stack. Note that the output of "netstat -s -p ipsec" differs depending on which stack is compiled into the kernel since they each keep different stats. This delta also adds the "esp", "ah", and "ipcomp" protocol stats, which are also available when the kernel is compiled with the FAST_IPSEC stack (e.g. "netstat -s -p esp"). Submitted by: Matt Titus <titus at nttmcl dot com> MFC after: 3 days
2005-12-28 20:36:55 +00:00
#endif
udp IPv6 support, IPv6/IPv4 tunneling support in kernel, packet divert at kernel for IPv6/IPv4 translater daemon This includes queue related patch submitted by jburkhol@home.com. Submitted by: queue related patch from jburkhol@home.com Reviewed by: freebsd-arch, cvs-committers Obtained from: KAME project
1999-12-07 17:39:16 +00:00
Use strlcpy and snprintf in netstat(1). Expand inet6name() line buffer to NI_MAXHOST and use strlcpy/snprintf in various places. Reported by: Anton Yuzhaninov <citrin citrin ru> MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D8916
2017-01-05 09:23:54 +00:00
#ifdef INET
struct in_addr;
char *inetname(struct in_addr *);
#endif
udp IPv6 support, IPv6/IPv4 tunneling support in kernel, packet divert at kernel for IPv6/IPv4 translater daemon This includes queue related patch submitted by jburkhol@home.com. Submitted by: queue related patch from jburkhol@home.com Reviewed by: freebsd-arch, cvs-committers Obtained from: KAME project
1999-12-07 17:39:16 +00:00
#ifdef INET6
Use strlcpy and snprintf in netstat(1). Expand inet6name() line buffer to NI_MAXHOST and use strlcpy/snprintf in various places. Reported by: Anton Yuzhaninov <citrin citrin ru> MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D8916
2017-01-05 09:23:54 +00:00
struct in6_addr;
char *inet6name(struct in6_addr *);
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
void ip6_stats(u_long, const char *, int, int);
Fixed style bugs created in rev.1.27 by removing "__P(" and its closing ")" without removing the space before it.
2003-12-29 04:34:36 +00:00
void ip6_ifstats(char *);
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
void icmp6_stats(u_long, const char *, int, int);
Fixed style bugs created in rev.1.27 by removing "__P(" and its closing ")" without removing the space before it.
2003-12-29 04:34:36 +00:00
void icmp6_ifstats(char *);
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
void pim6_stats(u_long, const char *, int, int);
void rip6_stats(u_long, const char *, int, int);
Use more fine-grained kvm(3) symbol lookup: routing code retrieves only necessary symbols needed per subsystem. Main kvm(3) init is now delayed as much as possbile. This finally fixes performance issues reported in kern/167204. Some non-working code (ng_socket.ko symbol addresses calculation) removed. Some global variables eliminated. PR: kern/167204 MFC after: 4 weeks
2013-12-20 00:17:26 +00:00
void mroute6pr(void);
void mrt6_stats(void);
sync with latest kame netstat. basically, more statistics
2000-07-04 16:26:46 +00:00
struct sockaddr_in6;
struct in6_addr;
- Hide the internal scope address representation of the KAME IPv6 stack from the output of `netstat -ani'. - The node-local multicast address in the output of `netstat -rn' should be handled as well. Spotted by: Bernd Walter <ticso__at__cicely7.cicely.de>
2011-01-20 15:22:01 +00:00
void in6_fillscopeid(struct sockaddr_in6 *);
Convert netstat to use libxo. Obtained from: Phil Shafer <phil@juniper.net> Ported to -current by: alfred@ (mostly), Kim Shrier Formatting: marcel@ Sponsored by: Juniper Networks, Inc.
2015-02-21 23:47:20 +00:00
void inet6print(const char *, struct in6_addr *, int, const char *, int);
udp IPv6 support, IPv6/IPv4 tunneling support in kernel, packet divert at kernel for IPv6/IPv4 translater daemon This includes queue related patch submitted by jburkhol@home.com. Submitted by: queue related patch from jburkhol@home.com Reviewed by: freebsd-arch, cvs-committers Obtained from: KAME project
1999-12-07 17:39:16 +00:00
#endif /*INET6*/
add pfkeystat. sync with kame
2000-07-05 02:02:54 +00:00
#ifdef IPSEC
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
void pfkey_stats(u_long, const char *, int, int);
add pfkeystat. sync with kame
2000-07-05 02:02:54 +00:00
#endif
Modify netstat -mb to use libmemstat when accessing a core dump or live kernel memory and not using sysctl. Previously, libmemstat was used only for the live kernel via sysctl paths. This results in netstat output becoming both more consistent between core dumps and the live kernel, and also more information in the core dump case than previously (i.e., mbuf cache information). Statistics relating to sfbufs still rely on a kvm descriptor as they are not currently exposed via libmemstat. netstat -m operating on a core is still unable to print certain sfbuf stats available on the live kernel. MFC after: 1 week
2005-11-13 14:06:01 +00:00
void mbpr(void *, u_long);
BSD 4.4 Lite Usr.bin Sources
1994-05-27 12:33:43 +00:00
Simplify kvm symbol resolution and error handling. The symbol table nl_symbols will eventually be organized into several modules depending on MK_* variables.
2015-09-02 18:51:36 +00:00
void netisr_stats(void);
Teach netstat(1) to print out netisr statistics when given the -Q argument. Currently supports only reporting on live systems via sysctl, kmem support needs to be edded. MFC after: 1 week Sponsored by: Juniper Networks
2010-02-22 15:57:36 +00:00
Fixed style bugs created in rev.1.27 by removing "__P(" and its closing ")" without removing the space before it.
2003-12-29 04:34:36 +00:00
void hostpr(u_long, u_long);
void impstats(u_long, u_long);
- Add -W flag support for network column in intpr() (-i flag) and routepr() (-r flag). It is too narrow to show an IPv6 prefix in most cases. - Accept "local" as a synonym of "unix" in protocol family name. - Show a prefix length in CIDR notation when name resolution failed in netname(). - Make routename() and netname() AF-independent and remove unnecessary typecasting from struct sockaddr. - Use getnameinfo(3) to format L2 addr in intpr(). - Fix a bug which showed "Address" when -A flag is specfied in pr_rthdr(). - Replace cryptic GETSA() macro with SA_SIZE(). - Fix declarations shadowing local variables with the same names. - Add more static, remove unused header files and variables. MFC after: 1 week
2015-09-01 08:42:04 +00:00
void intpr(void (*)(char *), int);
Fixed style bugs created in rev.1.27 by removing "__P(" and its closing ")" without removing the space before it.
2003-12-29 04:34:36 +00:00
void pr_family(int);
Use more fine-grained kvm(3) symbol lookup: routing code retrieves only necessary symbols needed per subsystem. Main kvm(3) init is now delayed as much as possbile. This finally fixes performance issues reported in kern/167204. Some non-working code (ng_socket.ko symbol addresses calculation) removed. Some global variables eliminated. PR: kern/167204 MFC after: 4 weeks
2013-12-20 00:17:26 +00:00
void rt_stats(void);
Fixed style bugs created in rev.1.27 by removing "__P(" and its closing ")" without removing the space before it.
2003-12-29 04:34:36 +00:00
- Add -W flag support for network column in intpr() (-i flag) and routepr() (-r flag). It is too narrow to show an IPv6 prefix in most cases. - Accept "local" as a synonym of "unix" in protocol family name. - Show a prefix length in CIDR notation when name resolution failed in netname(). - Make routename() and netname() AF-independent and remove unnecessary typecasting from struct sockaddr. - Use getnameinfo(3) to format L2 addr in intpr(). - Fix a bug which showed "Address" when -A flag is specfied in pr_rthdr(). - Replace cryptic GETSA() macro with SA_SIZE(). - Fix declarations shadowing local variables with the same names. - Add more static, remove unused header files and variables. MFC after: 1 week
2015-09-01 08:42:04 +00:00
char *routename(struct sockaddr *, int);
const char *netname(struct sockaddr *, struct sockaddr *);
Use more fine-grained kvm(3) symbol lookup: routing code retrieves only necessary symbols needed per subsystem. Main kvm(3) init is now delayed as much as possbile. This finally fixes performance issues reported in kern/167204. Some non-working code (ng_socket.ko symbol addresses calculation) removed. Some global variables eliminated. PR: kern/167204 MFC after: 4 weeks
2013-12-20 00:17:26 +00:00
void routepr(int, int);
Introduce nexthop objects and new routing KPI. This is the foundational change for the routing subsytem rearchitecture. More details and goals are available in https://reviews.freebsd.org/D24141 . This patch introduces concept of nexthop objects and new nexthop-based routing KPI. Nexthops are objects, containing all necessary information for performing the packet output decision. Output interface, mtu, flags, gw address goes there. For most of the cases, these objects will serve the same role as the struct rtentry is currently serving. Typically there will be low tens of such objects for the router even with multiple BGP full-views, as these objects will be shared between routing entries. This allows to store more information in the nexthop. New KPI: struct nhop_object *fib4_lookup(uint32_t fibnum, struct in_addr dst, uint32_t scopeid, uint32_t flags, uint32_t flowid); struct nhop_object *fib6_lookup(uint32_t fibnum, const struct in6_addr *dst6, uint32_t scopeid, uint32_t flags, uint32_t flowid); These 2 function are intended to replace all all flavours of <in_|in6_>rtalloc[1]<_ign><_fib>, mpath functions and the previous fib[46]-generation functions. Upon successful lookup, they return nexthop object which is guaranteed to exist within current NET_EPOCH. If longer lifetime is desired, one can specify NHR_REF as a flag and get a referenced version of the nexthop. Reference semantic closely resembles rtentry one, allowing sed-style conversion. Additionally, another 2 functions are introduced to support uRPF functionality inside variety of our firewalls. Their primary goal is to hide the multipath implementation details inside the routing subsystem, greatly simplifying firewalls implementation: int fib4_lookup_urpf(uint32_t fibnum, struct in_addr dst, uint32_t scopeid, uint32_t flags, const struct ifnet *src_if); int fib6_lookup_urpf(uint32_t fibnum, const struct in6_addr *dst6, uint32_t scopeid, uint32_t flags, const struct ifnet *src_if); All functions have a separate scopeid argument, paving way to eliminating IPv6 scope embedding and allowing to support IPv4 link-locals in the future. Structure changes: * rtentry gets new 'rt_nhop' pointer, slightly growing the overall size. * rib_head gets new 'rnh_preadd' callback pointer, slightly growing overall sz. Old KPI: During the transition state old and new KPI will coexists. As there are another 4-5 decent-sized conversion patches, it will probably take a couple of weeks. To support both KPIs, fields not required by the new KPI (most of rtentry) has to be kept, resulting in the temporary size increase. Once conversion is finished, rtentry will notably shrink. More details: * architectural overview: https://reviews.freebsd.org/D24141 * list of the next changes: https://reviews.freebsd.org/D24232 Reviewed by: ae,glebius(initial version) Differential Revision: https://reviews.freebsd.org/D24232
2020-04-12 14:30:00 +00:00
int p_sockaddr(const char *name, struct sockaddr *sa,
struct sockaddr *mask, int flags, int width);
const char *fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask,
int flags);
Fixed style bugs created in rev.1.27 by removing "__P(" and its closing ")" without removing the space before it.
2003-12-29 04:34:36 +00:00
add new build knobs and jigger some existing controls to improve control over the result of buildworld and installworld; this especially helps packaging systems such as nanobsd Reviewed by: various (posted to arch) MFC after: 1 month
2008-09-21 22:02:26 +00:00
#ifdef NETGRAPH
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
void netgraphprotopr(u_long, const char *, int, int);
add new build knobs and jigger some existing controls to improve control over the result of buildworld and installworld; this especially helps packaging systems such as nanobsd Reviewed by: various (posted to arch) MFC after: 1 month
2008-09-21 22:02:26 +00:00
#endif
Fixed style bugs created in rev.1.27 by removing "__P(" and its closing ")" without removing the space before it.
2003-12-29 04:34:36 +00:00
Convert netstat to use libxo. Obtained from: Phil Shafer <phil@juniper.net> Ported to -current by: alfred@ (mostly), Kim Shrier Formatting: marcel@ Sponsored by: Juniper Networks, Inc.
2015-02-21 23:47:20 +00:00
void unixpr(u_long, u_long, u_long, u_long, u_long, bool *);
Fixed style bugs created in rev.1.27 by removing "__P(" and its closing ")" without removing the space before it.
2003-12-29 04:34:36 +00:00
Use more fine-grained kvm(3) symbol lookup: routing code retrieves only necessary symbols needed per subsystem. Main kvm(3) init is now delayed as much as possbile. This finally fixes performance issues reported in kern/167204. Some non-working code (ng_socket.ko symbol addresses calculation) removed. Some global variables eliminated. PR: kern/167204 MFC after: 4 weeks
2013-12-20 00:17:26 +00:00
void mroutepr(void);
void mrt_stats(void);
Merge bpfstat's functionality into the netstat(1) utility. This adds a -B option which causes bpf peers to be printed. This option can be used in conjunction with -I if information about specific interfaces is desired. This is similar to what NetBSD added to their version of netstat. $ netstat -B Pid Netif Flags Recv Drop Match Sblen Hblen Command 1137 lo0 p--s-- 0 0 0 0 0 tcpdump 205 sis0 -ifs-l 37331 0 1 0 0 dhclient $ $ netstat -I lo0 -B Pid Netif Flags Recv Drop Match Sblen Hblen Command 1174 lo0 p--s-- 0 0 0 0 0 tcpdump $ -Add bpf.c which stores all the code for retrieving and parsing bpf related statistics. -Modify main.c to add support for the -B option and hook it into the program logic. -Add bpf.c to the build. -Document this new functionality in the man page and bump the revision date. -Add prototype for bpf_stats function.
2005-09-07 17:35:16 +00:00
void bpf_stats(char *);
Introduce nexthop objects and new routing KPI. This is the foundational change for the routing subsytem rearchitecture. More details and goals are available in https://reviews.freebsd.org/D24141 . This patch introduces concept of nexthop objects and new nexthop-based routing KPI. Nexthops are objects, containing all necessary information for performing the packet output decision. Output interface, mtu, flags, gw address goes there. For most of the cases, these objects will serve the same role as the struct rtentry is currently serving. Typically there will be low tens of such objects for the router even with multiple BGP full-views, as these objects will be shared between routing entries. This allows to store more information in the nexthop. New KPI: struct nhop_object *fib4_lookup(uint32_t fibnum, struct in_addr dst, uint32_t scopeid, uint32_t flags, uint32_t flowid); struct nhop_object *fib6_lookup(uint32_t fibnum, const struct in6_addr *dst6, uint32_t scopeid, uint32_t flags, uint32_t flowid); These 2 function are intended to replace all all flavours of <in_|in6_>rtalloc[1]<_ign><_fib>, mpath functions and the previous fib[46]-generation functions. Upon successful lookup, they return nexthop object which is guaranteed to exist within current NET_EPOCH. If longer lifetime is desired, one can specify NHR_REF as a flag and get a referenced version of the nexthop. Reference semantic closely resembles rtentry one, allowing sed-style conversion. Additionally, another 2 functions are introduced to support uRPF functionality inside variety of our firewalls. Their primary goal is to hide the multipath implementation details inside the routing subsystem, greatly simplifying firewalls implementation: int fib4_lookup_urpf(uint32_t fibnum, struct in_addr dst, uint32_t scopeid, uint32_t flags, const struct ifnet *src_if); int fib6_lookup_urpf(uint32_t fibnum, const struct in6_addr *dst6, uint32_t scopeid, uint32_t flags, const struct ifnet *src_if); All functions have a separate scopeid argument, paving way to eliminating IPv6 scope embedding and allowing to support IPv4 link-locals in the future. Structure changes: * rtentry gets new 'rt_nhop' pointer, slightly growing the overall size. * rib_head gets new 'rnh_preadd' callback pointer, slightly growing overall sz. Old KPI: During the transition state old and new KPI will coexists. As there are another 4-5 decent-sized conversion patches, it will probably take a couple of weeks. To support both KPIs, fields not required by the new KPI (most of rtentry) has to be kept, resulting in the temporary size increase. Once conversion is finished, rtentry will notably shrink. More details: * architectural overview: https://reviews.freebsd.org/D24141 * list of the next changes: https://reviews.freebsd.org/D24232 Reviewed by: ae,glebius(initial version) Differential Revision: https://reviews.freebsd.org/D24232
2020-04-12 14:30:00 +00:00
void nhops_print(int fibnum, int af);
Introduce scalable route multipath. This change is based on the nexthop objects landed in D24232. The change introduces the concept of nexthop groups. Each group contains the collection of nexthops with their relative weights and a dataplane-optimized structure to enable efficient nexthop selection. Simular to the nexthops, nexthop groups are immutable. Dataplane part gets compiled during group creation and is basically an array of nexthop pointers, compiled w.r.t their weights. With this change, `rt_nhop` field of `struct rtentry` contains either nexthop or nexthop group. They are distinguished by the presense of NHF_MULTIPATH flag. All dataplane lookup functions returns pointer to the nexthop object, leaving nexhop groups details inside routing subsystem. User-visible changes: The change is intended to be backward-compatible: all non-mpath operations should work as before with ROUTE_MPATH and net.route.multipath=1. All routes now comes with weight, default weight is 1, maximum is 2^24-1. Current maximum multipath group width is statically set to 64. This will become sysctl-tunable in the followup changes. Using functionality: * Recompile kernel with ROUTE_MPATH * set net.route.multipath to 1 route add -6 2001:db8::/32 2001:db8::2 -weight 10 route add -6 2001:db8::/32 2001:db8::3 -weight 20 netstat -6On Nexthop groups data Internet6: GrpIdx NhIdx Weight Slots Gateway Netif Refcnt 1 ------- ------- ------- --------------------------------------- --------- 1 13 10 1 2001:db8::2 vlan2 14 20 2 2001:db8::3 vlan2 Next steps: * Land outbound hashing for locally-originated routes ( D26523 ). * Fix net/bird multipath (net/frr seems to work fine) * Add ROUTE_MPATH to GENERIC * Set net.route.multipath=1 by default Tested by: olivier Reviewed by: glebius Relnotes: yes Differential Revision: https://reviews.freebsd.org/D26449
2020-10-03 10:47:17 +00:00
void nhgrp_print(int fibnum, int af);
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