sys: 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

sys: Remove $FreeBSD$: one-line .h pattern

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

Kernel-side infrastructure to implement nvlist-based set/get ifcaps

Reviewed by: hselasky, jhb, kp (previous version)
Sponsored by: NVIDIA Networking
MFC after: 3 weeks
Differential revision: https://reviews.freebsd.org/D32551

Implement SIOCGIFALIAS.

It is lightweight way to check if an IPv4 address exists.

Submitted by: Roy Marples
Reviewed by: gnn, melifaro
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D26636

add SIOCGIFDATA ioctl

For interfaces that do not support SIOCGIFMEDIA (for which there are
quite a few) the only fallback is to query the interface for
if_data->ifi_link_state. While it's possible to get at if_data for an
interface via getifaddrs(3) or sysctl, both are heavy weight mechanisms.

SIOCGIFDATA is a simple ioctl to retrieve this fast with very little
resource use in comparison. This implementation mirrors that of other
similar ioctls in FreeBSD.

Submitted by: Roy Marples <roy@marples.name>
Reviewed by: markj
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D26538

Add SIOCGIFDOWNREASON.

The ioctl(2) is intended to provide more details about the cause of
the down for the link.

Eventually we might define a comprehensive list of codes for the
situations. But interface also allows the driver to provide free-form
null-terminated ASCII string to provide arbitrary non-formalized
information. Sample implementation exists for mlx5(4), where the
string is fetched from firmware controlling the port.

Reviewed by: hselasky, rrs
Sponsored by: Mellanox Technologies
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D21527

Allow to specify PCP on packets not belonging to any VLAN.

According to 802.1Q-2014, VLAN tagged packets with VLAN id 0 should be
considered as untagged, and only PCP and DEI values from the VLAN tag
are meaningful. See for instance
https://www.cisco.com/c/en/us/td/docs/switches/connectedgrid/cg-switch-sw-master/software/configuration/guide/vlan0/b_vlan_0.html.

Make it possible to specify PCP value for outgoing packets on an
ethernet interface. When PCP is supplied, the tag is appended, VLAN
id set to 0, and PCP is filled by the supplied value. The code to do
VLAN tag encapsulation is refactored from the if_vlan.c and moved into
if_ethersubr.c.

Drivers might have issues with filtering VID 0 packets on
receive. This bug should be fixed for each driver.

Reviewed by: ae (previous version), hselasky, melifaro
Sponsored by: Mellanox Technologies
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D14702

sys: 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.

if: Add ioctls to get RSS key and hash type/function.

It will be needed by hn(4) to configure its RSS key and hash
type/function in the transparent VF mode in order to match VF's
RSS settings. The description of the transparent VF mode and
the RSS hash value issue are here:
https://svnweb.freebsd.org/base?view=revision&revision=322299
https://svnweb.freebsd.org/base?view=revision&revision=322485

These are generic enough to promise two independent IOCs instead
of abusing SIOCGDRVSPEC.

Setting RSS key and hash type/function is a different story,
which probably requires more discussion.

Comment about UDP_{IPV4,IPV6,IPV6_EX} were only in the patch
in the review request; these hash types are standardized now.

Reviewed by: gallatin
MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D12174

Persistently store NIC's hardware MAC address, and add a way to retrive it

The MAC address reported by `ifconfig ${nic} ether' does not always match
the address in the hardware, as reported by the driver during attach. In
particular, NICs which are components of a lagg(4) interface all report the
same MAC.

When attaching, the NIC driver passes the MAC address it read from the
hardware as an argument to ether_ifattach(). Keep a second copy of it, and
create ioctl(SIOCGHWADDR) to return it. Teach `ifconfig' to report it along
with the active MAC address.

PR: 194386
Reviewed by: glebius
MFC after: 1 week
Sponsored by: Panasas
Differential Revision: https://reviews.freebsd.org/D10609

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

sys/sys: minor spelling fixes.

While the changes are minor, these headers are very visible.

MFC after: 2 weeks

Fix SIOCGI2C structure requirement.

In reality, SIOCGI2C ioctl requires struct ifreq as many other
ioctls. Doing copyin() on (significantly) larger struct ifstat sometimes
triggered EFAULT.

Reported by: Olivier Cochard-Labbé <olivier at cochard.me>
MFC after: 1 week

Add new socket ioctls SIOC[SG]TUNFIB to set FIB number of encapsulated
packets on tunnel interfaces. Add support of these ioctls to gre(4),
gif(4) and me(4) interfaces. For incoming packets M_SETFIB() should use
if_fib value from ifnet structure, use proper value in gre(4) and me(4).

Differential Revision: https://reviews.freebsd.org/D2462
No objection from: #network
MFC after: 2 weeks
Sponsored by: Yandex LLC

ifmedia changes:

- Extend the number of available subtypes for Ethernet media by using some
of the ifmedia word's option bits to help denote subtypes. As a result, the
number of possible Ethernet subtype values increases from 31 to 511.

- Use some of those new values to define new media types.

- lacp_compose_key() recgonizes the new Ethernet media types added.
(Change made as required by a comment in if_media.h)

- New ioctl, SIOGIFXMEDIA, to handle getting the new extended media types.
SIOCGIFMEDIA is retained for backwards compatibility.

- Changes to ifconfig to allow it to handle the new extended media types.

Submitted by: mike@karels.net (original), hselasky
Reviewed by: jfvogel, gnn, hselasky
Approved by: jfvogel (mentor), gnn (mentor)
Differential Revision: http://reviews.freebsd.org/D1965

* Add SIOCGI2C driver ioctl used to retrieve i2c info.
* Convert ixgbe to use this ioctl
* Convert ifconfig to use generic i2c handler for "ix" interfaces.

Approved by: Eric Joyner (ixgbe part)
MFC after: 2 weeks
Sponsored by: Yandex LLC

Garbage collect long time obsoleted (or never used) stuff from routing API.

Remove never used ioctls that originate from KAME. The proof
of their zero usage was exp-run from misc/183538.

Provide compat layer for OSIOCAIFADDR.

Drop support for historic ioctls and also undefine them, so that code
that checks their presence via ifdef, won't use them.

Bump __FreeBSD_version as safety measure.

Provide ABI compatibility shim to enable configuring of addresses
with ifconfig(8) prior to r228571.

Requested by: brooks

Add infrastructure to allow all frames/packets received on an interface
to be assigned to a non-default FIB instance.

You may need to recompile world or ports due to the change of struct ifnet.

Submitted by: cjsp
Submitted by: Alexander V. Chernikov (melifaro ipfw.ru)
(original versions)
Reviewed by: julian
Reviewed by: Alexander V. Chernikov (melifaro ipfw.ru)
MFC after: 2 weeks
X-MFC: use spare in struct ifnet

Reshuffle SIOCGIFCONF32 handler from r155224.

- move all the chunks into one file, which allows to hide SIOCGIFCONF32
global definition as well.
- replace __amd64__ with proper COMPAT_FREEBSD32 around.
- handle 32bit capacity before going into the handler itself instead of
doing internal 32bit specific changes within it (e.g. as it's done for
SIOCGDEFIFACE32_IN6).
- use explicitely sized types for ABI compat.

Approved by: kib (mentor)
MFC after: 2 weeks

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

MFC 203052:

Add interface description capability as inspired by OpenBSD. Thanks for
rwatson@, jhb@, brooks@ and others for feedback to the old implementation!

Sponsored by: iXsystems, Inc.

Revised revision 199201 (add interface description capability as inspired
by OpenBSD), based on comments from many, including rwatson, jhb, brooks
and others.

Sponsored by: iXsystems, Inc.
MFC after: 1 month

Revert revision 199201 for now as it has introduced a kernel vulnerability
and requires more polishing.

Add interface description capability as inspired by OpenBSD.

MFC after: 3 months

Remove the interim vimage containers, struct vimage and struct procg,
and the ioctl-based interface that supported them.

Approved by: re (kib), bz (mentor)

Manage vnets via the jail system. If a jail is given the boolean
parameter "vnet" when it is created, a new vnet instance will be created
along with the jail. Networks interfaces can be moved between prisons
with an ioctl similar to the one that moves them between vimages.
For now vnets will co-exist under both jails and vimages, but soon
struct vimage will be going away.

Reviewed by: zec, julian
Approved by: bz (mentor)

Introduce an interm userland-kernel API for creating vnets and
assigning ifnets from one vnet to another. Deletion of vnets is not
yet supported.

The interface is implemented as an ioctl extension so that no syscalls
had to be introduced. This should be acceptable given that the new
interface will be used for a short / interim period only, until the
new jail management framwork gains the capability of managing vnets.
This method for managing vimages / vnets has been in use for the past
7 years without any observable issues.

The userland tool to be used in conjunction with the interim API can be
found in p4: //depot/projects/vimage-commit2/src/usr.sbin/vimage/... and
will most probably never get commited to svn.

While here, bump copyright notices in kern_vimage.c and vimage.h to
cover work done in year 2009.

Approved by: julian (mentor)
Discussed with: bz, rwatson

- Import the HEAD csup code which is the basis for the cvsmode work.

Trim some noise from some #ifdef's. This had leaked into the compat32
support for bpf(4) due to hacks in the Y! tree for a truss32 binary
(since superseded by native support for 32-bit binaries in truss itself).

MFC after: 1 week

Revise network interface cloning to take an optional opaque
parameter that can specify configuration parameters:
o rev cloner api's to add optional parameter block
o add SIOCCREATE2 that accepts parameter data
o rev vlan support to use new api (maintain old code)

Reviewed by: arch@

Import interface groups from OpenBSD. This allows to group interfaces in
order to - for example - apply firewall rules to a whole group of
interfaces. This is required for importing pf from OpenBSD 3.9

Obtained from: OpenBSD (with changes)
Discussed on: -net (back in April)

Implement SIOCGIFCONF for 32bit binaries.

Add hooks into the networking layer to support if_bridge. This changes struct
ifnet so a buildworld is necessary.

Approved by: mlaier (mentor)
Obtained from: NetBSD

Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core

Add the kernel side of network interface renaming support.

The basic process is to send a routing socket announcement that the
interface has departed, change if_xname, update the sockaddr_dl
associated with the interface, and announce the arrival of the interface
on the routing socket.

As part of this change, ifunit() is greatly simplified by testing
if_xname directly. if_clone_destroy() now uses if_dname to look up the
cloner for the interface and if_dunit to identify the unit number.

Reviewed by: ru, sam (concept)
Vincent Jardin <vjardin AT free.fr>
Max Laier <max AT love2party.net>

Style consistency fix for MAC ioctls added previously.

o Reserve two interface ioctl values, 38, and 38, for SIOCGIFMAC and
SIOCSIFMAC, which are for the Mandatory Access Control
implementation. This will prevent collisions on the p4 development
branch.

Obtained from: TrustedBSD Project

Fixed style bugs from revisions 8.1 (CSRG), 1.14, 1.19 and 1.22.

Add two "device private" ioctls needed by the Aironet (an) driver.
Move some ioctls that were out of order.

Add a SIOCGIFINDEX ioctl, which returns the index of a named interface.
This will be used to more efficiently support if_nametoindex(3).

Add SIO{CG}IFCAP entries. Fix formatting of some other entries.

Add kernel infrastructure for network device cloning.

Reviewed by: ru, ume
Obtained from: NetBSD
MFC after: 1 week

Sync with recent KAME.
This work was based on kame-20010528-freebsd43-snap.tgz and some
critical problem after the snap was out were fixed.
There are many many changes since last KAME merge.

TODO:
- The definitions of SADB_* in sys/net/pfkeyv2.h are still different
from RFC2407/IANA assignment because of binary compatibility
issue. It should be fixed under 5-CURRENT.
- ip6po_m member of struct ip6_pktopts is no longer used. But, it
is still there because of binary compatibility issue. It should
be removed under 5-CURRENT.

Reviewed by: itojun
Obtained from: KAME
MFC after: 3 weeks

sync with kame tree as of july00. tons of bug fixes/improvements.

API changes:
- additional IPv6 ioctls
- IPsec PF_KEY API was changed, it is mandatory to upgrade setkey(8).
(also syntax change)

Implement SIOCSIFLLADDR, which allows you to change the link-level
address on an interface. This basically allows you to do what my
little setmac module/utility does via ifconfig. This involves the
following changes:

socket.h: define SIOCSIFLLADDR
if.c: add support for SIOCSIFLLADDR, which resets the values in
the arpcom struct and sockaddr_dl for the specified interface.
Note that if the interface is already up, we need to down/up
it in order to program the underlying hardware's receive filter.
ifconfig.c: add lladdr command
ifconfig.8: document lladdr command

You can now force the MAC address on any ethernet interface to be
whatever you want. (The change is not sticky across reboots of course:
we don't actually reprogram the EEPROM or anything.) Actually, you
can reprogram the MAC address on other kinds of interfaces too; this
shouldn't be ethernet-specific (though at the moment it's limited to
6 bytes of address data).

Nobody ran up to me and said "this is the politically correct way to
do this!" so I don't want to hear any complaints from people who think
I could have done it more elegantly. Consider yourselves lucky I didn't
do it by having ifconfig tread all over /dev/kmem.

KAME related header files additions and merges.
(only those which don't affect c source files so much)

Reviewed by: cvs-committers
Obtained from: KAME project

$Id$ -> $FreeBSD$

Add a new interface ioctl, to return "aux status".

This is inteded for to allow ifconfig to print various unstructured
information from an interface.

The data is returned from the kernel in ASCII form, see the comment in
if.h for some technicalities.

Canonical cut&paste example to be found in if_tun.c

Initial use:
Now tun* interfaces tell the PID of the process which opened them.

Future uses could be (volounteers welcome!):
Have ppp/slip interfaces tell which tty they use.
Make sync interfaces return their media state: red/yellow/blue
alarm, timeslot assignment and so on.
Make ethernets warn about missing heartbeats and/or cables

Introduce the SIOC[SG]IFGENERIC hooks that can be used to pass an
arbritrary ioctl subcommand into an interface driver. Surprisingly
enough, there was no provision for this already present (except of the
option of abusing SIOC[SG]IFMEDIA for this).

The idea is that an interface driver can establish ioctl subcommands
of its own that can't be meaningfully interpreted by the upper layer
interface ioctl function. Something like this is required to
implement a clean solution of passing down things like CHAP secrets or
PPP options to the /sys/net/if_sppp* files. (Yes, my CHAP is now
finally working with it, but i gotta update my kernel to the new
callout interface before being able to commit _that_.)

Reviewed by: peter [long ago, actually]

define SIOC{SG}IFMEDIA ioctls

Obtained from: NetBSD

Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Reformatted FreeBSD additions to match 4.4Lite style. Mixed tabs and
spaces after #define's look ugly in diffs.

Removed SIOCSETRTINFO, SIOCGETRTINFO, and SIOCGETVIFINF ioctl's, which
snuck in accidentally from the DARTNet kernel. SIOC*RTINFO were an
extended interface to the stock routing table and SIOCGETVIFINF was
an interface for rsvpd to ask the kernel for the list of multicast vif's.

Pointed-out-by: Brian Reichert <reichert@internet.com>

Add generic part of generic multiple-physical-interface support (the
successor of IFF_ALTPHYS).

Initial get-the-easy-case-working upgrade of the multicast code
to something more recent than the ancient 1.2 release contained in
4.4. This code has the following advantages as compared to
previous versions (culled from the README file for the SunOS release):

- True multicast delivery
- Configurable rate-limiting of forwarded multicast traffic on each
physical interface or tunnel, using a token-bucket limiter.
- Simplistic classification of packets for prioritized dropping.
- Administrative scoping of multicast address ranges.
- Faster detection of hosts leaving groups.
- Support for multicast traceroute (code not yet available).
- Support for RSVP, the Resource Reservation Protocol.

What still needs to be done:

- The multicast forwarder needs testing.
- The multicast routing daemon needs to be ported.
- Network interface drivers need to have the `#ifdef MULTICAST' goop ripped
out of them.
- The IGMP code should probably be bogon-tested.

Some notes about the porting process:

In some cases, the Berkeley people decided to incorporate functionality from
later releases of the multicast code, but then had to do things differently.
As a result, if you look at Deering's patches, and then look at
our code, it is not always obvious whether the patch even applies. Let
the reader beware.

I ran ip_mroute.c through several passes of `unifdef' to get rid of
useless grot, and to permanently enable the RSVP support, which we will
include as standard.

Ported by: Garrett Wollman
Submitted by: Steve Deering and Ajit Thyagarajan (among others)

Added ioctl support for SIOCGIFMTU and SIOCSIFMTU. These set the per-
interface MTU.

Added $Id$

BSD 4.4 Lite Kernel Sources