route.8: remove now incorrect bug report about blackhole routes

We removed IP fast forwarding a while ago, so this is no longer relevant.
The netlink interface always sets the nexthop interface as V

route.8: remove now incorrect bug report about blackhole routes

We removed IP fast forwarding a while ago, so this is no longer relevant.
The netlink interface always sets the nexthop interface as V_loif, so users
don't need to worry about it either.

Reported by: Jim Thompson
Reviewed by: melifaro
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D47528

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sbin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl

sbin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

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Remove $FreeBSD$: one-line nroff pattern

Remove /^\.\\"\s*\$FreeBSD\$$\n/

route.8: mention DXR in FIB_ALGO section

While here, add a sentence describing DPDK DIR24-8 principle of
operation.

MFC after: 2 weeks.

route(8): teach route to attach to jails

Add -j <jail> flag to route(8) to allow route to perform actions in
a Jail.

Differential Revision: https://reviews.freebsd.org/D40377
MFC after: 2 weeks

route.8: Don't reference an external command in EXAMPLES

It is better to mention the externel command for showing
the routing table as using an explicit command.

PR: 231579
Suggested by: karels
Rev

route.8: Don't reference an external command in EXAMPLES

It is better to mention the externel command for showing
the routing table as using an explicit command.

PR: 231579
Suggested by: karels
Reviewed by: karles, gbe
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D39075

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route.8: Fix mandoc warnings

- skipping end of block that is not open: Oc
- no blank before trailing delimiter
- remove useless TN macros
- remove commented out reference for esis(4)

MFC after: 5 d

route.8: Fix mandoc warnings

- skipping end of block that is not open: Oc
- no blank before trailing delimiter
- remove useless TN macros
- remove commented out reference for esis(4)

MFC after: 5 days
Differential Revision: https://reviews.freebsd.org/D38783

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route.8: Add information about ROUTE_MPATH and FIB_ALGO

Since the kernel options ROUTE_MPATH and FIB_ALGO are enabled
per default for a while, it's good to have some user facing
documetation about t

route.8: Add information about ROUTE_MPATH and FIB_ALGO

Since the kernel options ROUTE_MPATH and FIB_ALGO are enabled
per default for a while, it's good to have some user facing
documetation about the general functionality of multipath
routing and fib lookup algorithms.

Reviewed by: pauamma, Jose Luis Duran <jlduran at gmail dot com>
MFC after: 5 days
Differential Revision: https://reviews.freebsd.org/D38783

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route(8): Remove obsolete information

xns and osi are no longer relevant (or supported) so remove their
vestiges.

Noticed by: phk
Sponsored by: Netflix

route(8): Add an example how to print the routing tables

The manual page currently doesn't show an example how to print
the routing table, so add one and .Xr netstat while here.

PR: 231579
Reporte

route(8): Add an example how to print the routing tables

The manual page currently doesn't show an example how to print
the routing table, so add one and .Xr netstat while here.

PR: 231579
Reported by: Pekka Järvinen <pekka dot jarvinen at gmail dot com>
Reviewed by: debdrup
MFC after: 5 days
Differential Revision: https://reviews.freebsd.org/D29702

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route(8): clarify -prefixlen description

Try to reword -prefixlen section to more clearly and accurately describe how
the -prefixlen modifier works.

While here, fix a word that igor considered a ty

route(8): clarify -prefixlen description

Try to reword -prefixlen section to more clearly and accurately describe how
the -prefixlen modifier works.

While here, fix a word that igor considered a typo: aggregatable addresses is a
valid technical term per RFC-2374, however, it was superseded by the term
"aggregator" in RFC-3587.

MFC after: 1 week
Reviewed by: 0mp, crees
Approved by: emaste (mentor)
Differential Revision: https://reviews.freebsd.org/D10087

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Fix route manpage to show correct flush syntax

The current route(8) manpage shows that "flush" is an argument to
the optional -n flag, rather than a separate subcommand. Correct
this to properly sh

Fix route manpage to show correct flush syntax

The current route(8) manpage shows that "flush" is an argument to
the optional -n flag, rather than a separate subcommand. Correct
this to properly show flush as a route subcommand.

MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Reviewed by: rgrimes
Differential Revision: https://reviews.freebsd.org/D14401

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Allow route change requests to not specify the gateway.

Only require a gateway to be specified on a route add request. On
a route change request that does not specify the gateway, the
gateway will

Allow route change requests to not specify the gateway.

Only require a gateway to be specified on a route add request. On
a route change request that does not specify the gateway, the
gateway will remain the same. This allows changing other route
parameters without having to re-specifying the gateway, like in
"route change 10.0.0.0/8 -mtu 9000".

Update the route(8) manpage to explicitly call out this usage
as being supported.

MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Reviewed By: eugen (rtsock.c change), rgrimes
Differential Revision: https://reviews.freebsd.org/D14291

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Merge ^/head r322398 through r322746.

MFhead@r322675

Typo, the '-6' option selects inet6.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days

Merge ^/head r314420 through r314481.

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

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

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Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

Sync to HEAD@r274766

Merge from head@274682

Kill custom in_matroute() radix mathing function removing one rte mutex lock.

Initially in_matrote() in_clsroute() in their current state was introduced by
r4105 20 years ago. Instead of deleting in

Kill custom in_matroute() radix mathing function removing one rte mutex lock.

Initially in_matrote() in_clsroute() in their current state was introduced by
r4105 20 years ago. Instead of deleting inactive routes immediately, we kept them
in route table, setting RTPRF_OURS flag and some expire time. After that, either
GC came or RTPRF_OURS got removed on first-packet. It was a good solution
in that days (and probably another decade after that) to keep TCP metrics.
However, after moving metrics to TCP hostcache in r122922, most of in_rmx
functionality became unused. It might had been used for flushing icmp-originated
routes before rte mutexes/refcounting, but I'm not sure about that.

So it looks like this is nearly impossible to make GC do its work nowadays:

in_rtkill() ignores non-RTPRF_OURS routes.
route can only become RTPRF_OURS after dropping last reference via rtfree()
which calls in_clsroute(), which, it turn, ignores UP and non-RTF_DYNAMIC routes.

Dynamic routes can still be installed via received redirect, but they
have default lifetime (no specific rt_expire) and no one has another trie walker
to call RTFREE() on them.

So, the changelist:
* remove custom rnh_match / rnh_close matching function.
* remove all GC functions
* partially revert r256695 (proto3 is no more used inside kernel,
it is not possible to use rt_expire from user point of view, proto3 support
is not complete)
* Finish r241884 (similar to this commit) and remove remaining IPv6 parts

MFC after: 1 month

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MFC @ r266724

An SVM update will follow this.

Merge head