MFC r334231, r334779, r335322, and r338208 to stable/11 from head

These include:
r334231: iflib: Add new shared flag: IFLIB_ADMIN_ALWAYS_RUN
r334779: iflib: Record TCP checksum info in iflib when TCP checksum is requested
r335322: iflib: Style fixes
r338208: if_media: Add new 2.5G/5G/25G/40G/50G/100G/200G/400G media types

Sponsored by: Intel Corporation

MFC r318147: Add several new media types to if_media.h

These include several 25G types (for active direct attach cables and LR modules),
and a missing type for 10G active direct attach.

Sponsored by: Intel Corporation

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

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

Introduce a procedural interface to the ifnet structure. The new
interface allows the ifnet structure to be defined as an opaque
type in NIC drivers. This then allows the ifnet structure to be
changed without a need to change or recompile NIC drivers.

Put differently, NIC drivers can be written and compiled once and
be used with different network stack implementations, provided of
course that those network stack implementations have an API and
ABI compatible interface.

This commit introduces the 'if_t' type to replace 'struct ifnet *'
as the type of a network interface. The 'if_t' type is defined as
'void *' to enable the compiler to perform type conversion to
'struct ifnet *' and vice versa where needed and without warnings.
The functions that implement the API are the only functions that
need to have an explicit cast.

The MII code has been converted to use the driver API to avoid
unnecessary code churn. Code churn comes from having to work with
both converted and unconverted drivers in correlation with having
callback functions that take an interface. By converting the MII
code first, the callback functions can be defined so that the
compiler will perform the typecasts automatically.

As soon as all drivers have been converted, the if_t type can be
redefined as needed and the API functions can be fix to not need
an explicit cast.

The immediate benefactors of this change are:
1. Juniper Networks - The network stack implementation in Junos
is entirely different from FreeBSD's one and this change
allows Juniper to build "stock" NIC drivers that can be used
in combination with both the FreeBSD and Junos stacks.
2. FreeBSD - This change opens the door towards changing ifnet
and implementing new features and optimizations in the network
stack without it requiring a change in the many NIC drivers
FreeBSD has.

Submitted by: Anuranjan Shukla <anshukla@juniper.net>
Reviewed by: glebius@
Obtained from: Juniper Networks, Inc.

Provide forward declaration for struct ifnet. Consumers
of this header don't need contents of struct.

Add a note that lacp_compose_key() should be updated, when new media
types will be added.

Submitted by: melifaro
X-MFC after: r256689

Add media types for 40G media that might be used with FreeBSD.

Reviewed by: bz
MFC after: 2 weeks

Since r228571 CARP is no longer an interface.

- Add 10baseT as an alias for 10baseT/UTP.
- Add shorthand aliases for common media+option combinations as announced
by miibus(4) so that one can actually supply the media strings found in
the dmesg output to ifconfig(8).

Obtained from: NetBSD (in principle)
MFC after: 2 weeks

Teach ifconfig(8) the handy shared option shortcut aliases the NetBSD
counterpart also takes, i.e. "fdx" for "full-duplex", "flow" for
"flowcontrol", "hdx" for "half-duplex" as well as "loop" and "loopback"
for "hw-loopback".

MFC after: 1 week

Fix whitespace.

MFC after: 1 week

o Flesh out the generic IEEE 802.3 annex 31B full duplex flow control
support in mii(4):
- Merge generic flow control advertisement (which can be enabled by
passing by MIIF_DOPAUSE to mii_attach(9)) and parsing support from
NetBSD into mii_physubr.c and ukphy_subr.c. Unlike as in NetBSD,
IFM_FLOW isn't implemented as a global option via the "don't care
mask" but instead as a media specific option this. This has the
following advantages:
o allows flow control advertisement with autonegotiation to be
turned on and off via ifconfig(8) with the default typically
being off (though MIIF_FORCEPAUSE has been added causing flow
control to be always advertised, allowing to easily MFC this
changes for drivers that previously used home-grown support for
flow control that behaved that way without breaking POLA)
o allows to deal with PHY drivers where flow control advertisement
with manual selection doesn't work or at least isn't implemented,
like it's the case with brgphy(4), e1000phy(4) and ip1000phy(4),
by setting MIIF_NOMANPAUSE
o the available combinations of media options are readily available
from the `ifconfig -m` output
- Add IFM_FLOW to IFM_SHARED_OPTION_DESCRIPTIONS and IFM_ETH_RXPAUSE
and IFM_ETH_TXPAUSE to IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS so
these are understood by ifconfig(8).
o Make the master/slave support in mii(4) actually usable:
- Change IFM_ETH_MASTER from being implemented as a global option via
the "don't care mask" to a media specific one as it actually is only
applicable to IFM_1000_T to date.
- Let mii_phy_setmedia() set GTCR_MAN_MS in IFM_1000_T slave mode to
actually configure manually selected slave mode (like we also do in
the PHY specific implementations).
- Add IFM_ETH_MASTER to IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS so it
is understood by ifconfig(8).
o Switch bge(4), bce(4), msk(4), nfe(4) and stge(4) along with brgphy(4),
e1000phy(4) and ip1000phy(4) to use the generic flow control support
instead of home-grown solutions via IFM_FLAGs. This includes changing
these PHY drivers and smcphy(4) to no longer unconditionally advertise
support for flow control but only if the selected media has IFM_FLOW
set (or MIIF_FORCEPAUSE is set) and implemented for these media variants,
i.e. typically only for copper.
o Switch brgphy(4), ciphy(4), e1000phy(4) and ip1000phy(4) to report and
set IFM_1000_T master mode via IFM_ETH_MASTER instead of via IFF_LINK0
and some IFM_FLAGn.
o Switch brgphy(4) to add at least the the supported copper media based on
the contents of the BMSR via mii_phy_add_media() instead of hardcoding
them. The latter approach seems to have developed historically, besides
causing unnecessary code duplication it was also undesirable because
brgphy_mii_phy_auto() already based the capability advertisement on the
contents of the BMSR though.
o Let brgphy(4) set IFM_1000_T master mode on all supported PHY and not
just BCM5701. Apparently this was a misinterpretation of a workaround
in the Linux tg3 driver; BCM5701 seem to require RGPHY_1000CTL_MSE and
BRGPHY_1000CTL_MSC to be set when configuring autonegotiation but
this doesn't mean we can't set these as well on other PHYs for manual
media selection.
o Let ukphy_status() report IFM_1000_T master mode via IFM_ETH_MASTER so
IFM_1000_T master mode support now is generally available with all PHY
drivers.
o Don't let e1000phy(4) set master/slave bits for IFM_1000_SX as it's
not applicable there.

Reviewed by: yongari (plus additional testing)
Obtained from: NetBSD (partially), OpenBSD (partially)
MFC after: 2 weeks

Add MCS to the list of media types.

Sponsored by: iXsystems, inc.

Implementation of the upcoming Wireless Mesh standard, 802.11s, on the
net80211 wireless stack. This work is based on the March 2009 D3.0 draft
standard. This standard is expected to become final next year.
This includes two main net80211 modules, ieee80211_mesh.c
which deals with peer link management, link metric calculation,
routing table control and mesh configuration and ieee80211_hwmp.c
which deals with the actually routing process on the mesh network.
HWMP is the mandatory routing protocol on by the mesh standard, but
others, such as RA-OLSR, can be implemented.

Authentication and encryption are not implemented.

There are several scripts under tools/tools/net80211/scripts that can be
used to test different mesh network topologies and they also teach you
how to setup a mesh vap (for the impatient: ifconfig wlan0 create
wlandev ... wlanmode mesh).

A new build option is available: IEEE80211_SUPPORT_MESH and it's enabled
by default on GENERIC kernels for i386, amd64, sparc64 and pc98.

Drivers that support mesh networks right now are: ath, ral and mwl.

More information at: http://wiki.freebsd.org/WifiMesh

Please note that this work is experimental. Also, please note that
bridging a mesh vap with another network interface is not yet supported.

Many thanks to the FreeBSD Foundation for sponsoring this project and to
Sam Leffler for his support.
Also, I would like to thank Gateworks Corporation for sending me a
Cambria board which was used during the development of this project.

Reviewed by: sam
Approved by: re (kensmith)
Obtained from: projects/mesh11s

Add 10Gbase-T to known ethernet media types.

Approved by: gnn (mentor)
MFC after: 1 week.

About to add 10Gbase-T to known media types, this is just a whitespace
cleanup before that commit. No functional impact.

Approved by: gnn (mentor)

Add TWINAX (Twin Axial Copper for 10G networking) media types.

Add code to the Chelsio driver so that it can recognize different
module types which may be plugged into it, including SR, LR lasers
and TWINAX copper cables.

Obtained from: Chelsio Inc.
MFC after: 1 week

Make "1000baseT" the description and "1000baseTX" the alias for
IFM_1000_T instead of the reverse. It is possible FreeBSD doesn't
even support 1000baseTX.
This changes ifconfig(8) output.

Requested by: gavin@ and bms@
See also: http://docs.freebsd.org/cgi/mid.cgi?20050307191901.H32508

Move "1000baseT" from IFM_SUBTYPE_ETHERNET_DESCRIPTIONS to
IFM_SUBTYPE_ETHERNET_ALIASES: there is already "1000baseTX" in
IFM_SUBTYPE_ETHERNET_DESCRIPTIONS. This doesn't change ifconfig
behaviour.

PR: 45793 (maybe)
Approved by: rwatson (mentor)
MFC after: 1 month

IFM_IEEE80211_IBSSMASTER hasn't been used in many years; replace it
with IFM_IEEE80211_WDS which will be used by the forthcoming vap code

MFC after: 3 weeks

remove IFM_IEEE80211_HT40PLUS and IFM_IEEE80211_HT40MINUS; they
never got used so nuke 'em before we branch

Approved by: re (blanket wireless)

Update 802.11 wireless support:
o major overhaul of the way channels are handled: channels are now
fully enumerated and uniquely identify the operating characteristics;
these changes are visible to user applications which require changes
o make scanning support independent of the state machine to enable
background scanning and roaming
o move scanning support into loadable modules based on the operating
mode to enable different policies and reduce the memory footprint
on systems w/ constrained resources
o add background scanning in station mode (no support for adhoc/ibss
mode yet)
o significantly speedup sta mode scanning with a variety of techniques
o add roaming support when background scanning is supported; for now
we use a simple algorithm to trigger a roam: we threshold the rssi
and tx rate, if either drops too low we try to roam to a new ap
o add tx fragmentation support
o add first cut at 802.11n support: this code works with forthcoming
drivers but is incomplete; it's included now to establish a baseline
for other drivers to be developed and for user applications
o adjust max_linkhdr et. al. to reflect 802.11 requirements; this eliminates
prepending mbufs for traffic generated locally
o add support for Atheros protocol extensions; mainly the fast frames
encapsulation (note this can be used with any card that can tx+rx
large frames correctly)
o add sta support for ap's that beacon both WPA1+2 support
o change all data types from bsd-style to posix-style
o propagate noise floor data from drivers to net80211 and on to user apps
o correct various issues in the sta mode state machine related to handling
authentication and association failures
o enable the addition of sta mode power save support for drivers that need
net80211 support (not in this commit)
o remove old WI compatibility ioctls (wicontrol is officially dead)
o change the data structures returned for get sta info and get scan
results so future additions will not break user apps
o fixed tx rate is now maintained internally as an ieee rate and not an
index into the rate set; this needs to be extended to deal with
multi-mode operation
o add extended channel specifications to radiotap to enable 11n sniffing

Drivers:
o ath: add support for bg scanning, tx fragmentation, fast frames,
dynamic turbo (lightly tested), 11n (sniffing only and needs
new hal)
o awi: compile tested only
o ndis: lightly tested
o ipw: lightly tested
o iwi: add support for bg scanning (well tested but may have some
rough edges)
o ral, ural, rum: add suppoort for bg scanning, calibrate rssi data
o wi: lightly tested

This work is based on contributions by Atheros, kmacy, sephe, thompsa,
mlaier, kevlo, and others. Much of the scanning work was supported by
Atheros. The 11n work was supported by Marvell.

- Added a new Ethernet media type (2500BaseSX) to support BCM5708 controllers
which support a 2.5Gbps mode over fiber using next page extensions during
autonegotiation. Typically only found in blade systems which also include
a Broadcom 2.5Gbps capable switch.

MFC after: 2 weeks

First cut at half/quarter-rate 11a channel support (e.g. for use
in the Public Safety Band):
o add channel flags to identify half/quarter-rate operation
o add rate sets (need to check spec on 4Mb/s in 1/4 rate)
o add if_media definitions for new rates
o split net80211 channel setup out into ieee80211_chan_init
o fixup ieee80211_mhz2ieee and ieee80211_ieee2mhz to understand half/quarter
rate channels: note we temporarily use a nonstandard/hack numbering that
avoids overlap with 2.4G channels because we don't (yet) have enough
state to identify and/or map overlapping channel sets
o fixup ieee80211_ifmedia_init so it can be called post attach and will
recalculate the channel list and associated state; this enables changing
channel-related state like the regulatory domain after attach (will be
needed for 802.11d support too)
o add ieee80211_get_suprates to return a reference to the supported rate
set for a given channel
o add 3, 4.5, and 27 MB/s tx rates to rate <-> media conversion routines
o const-poison channel arg to ieee80211_chan2mode

- Add definition for IFM_10G_CX4.
- Put IFM_10G_CX4 and IFM_10G_SR into IFMEDIA_BAUDRATE array.

Requested by: Jack Vogel <jfvogel gmail.com>

Undo damage from wrong MFC to HEAD.

Pointed out by: jkim, remko

MFC rev. 1.32: Add link status descriptions and related structures for userland
applications.

Approved by: re

Add link status descriptions and related structures for userland
applications.

Open[BGP|OSPF]D make use of this to determine the link status of
interfaces to make the right routing descisions.

Obtained from: OpenBSD
MFC after: 3 days

Fix build.

- Introduce ifmedia_baudrate(), which returns correct baudrate of the
given media status. [1]
- Utilize ifmedia_baudrate() in miibus_statchg() to update ifp->if_baudrate.

Obtained from: NetBSD [1]

Add CARP (Common Address Redundancy Protocol), which allows multiple
hosts to share an IP address, providing high availability and load
balancing.

Original work on CARP done by Michael Shalayeff, with many
additions by Marco Pfatschbacher and Ryan McBride.

FreeBSD port done solely by Max Laier.

Patch by: mlaier
Obtained from: OpenBSD (mickey, mcbride)

/* -> /*- for license, minor formatting changes

Added two new media types for 10GBASE-SR and 10GBASE-LR

Add Direct Sequence 354K and 512K (needed for arl(4)).

Add an ATM sub-type for virtual interfaces.

Fix definition of IFM_MODE, which should be refrected the change of
IFM_IEEE80211_ mode. Also ifconfig(8) must be recompiled.
Pointed out by Sam Leffeler.

Add support for FH phy, which will be used by awi driver.
Also some if_media constants to indicate operational mode are changed
to bitmasks to reduce diffs from NetBSD.

add monitor mode

add "autoselect" mode and "auto" alias: these let you reset the
"phy mode" to an auto-selecting mode, as opposed to one where
you're locked to a particular one (e.g. 11a for 802.11)

Fix a typo in an ATM media name. As this name was not use yet, no problems
should occur.

Add media types and options for ATM. While on most ATM cards media cannot
be changed, it is very convenient to be able to toggle SDH/Sonet,
idle/unassigned cells and scrambled mode and to see the carrier
state.

Reviewed by: -arch (if_media.h definitions)

o add support for multi-mode devices like 802.11 wireless cards that support
11a/b/g by adding an optional 3-bit mode field
o correct the spelling of OFDM (was ODFM)
o add an 802.11 subtype option for turbo mode: the phy is clocked at 2x the
normal clock rate; note this can be applied to both OFDM in 11a and OFDM
in 11g mode (and possibly DS11 in 11b for certain phy's)
o add 802.11 CCK aliases for 11b/11g rates--the more common terminology

Add some additional 802.11 media definitions.

Reviewed by: imp

MFOpenBSD: ibss and ibss-master.

ibss is the modern ad-hoc mode. ibss-master is the same, except that
it creates the ibss network. This distinction is necessary because
some supported cards (symbol) support the former without supporting
the latter.

A seprate commit will introduce a demo-adhoc mode so that we can
disentwingle the multiple, mutually exclusive meandings of adhoc in
the present state of affairs.

Submitted by: jhay

Move us yet closer to IFM_* definitions in NetBSD.

Follow NetBSD and s/IFM_1000_TX/IFM_1000_T/

Add hostap 802.11 media type.

From wi_hostap stuff by Thomas Skibo

Remove __P.

Currently, each wireless networking driver has it's own control program
despite the fact that most people want to set exactly the same settings
regardless of which card they have. It has been repeatidly suggested
that this configuration should be done via ifconfig. This patch
implements the required functionality in ifconfig and add support to the
wi and an drivers. It also provides partial, untested support for the
awi driver.

PR: 25577
Submitted by: Brooks Davis <brooks@one-eyed-alien.net>

Back out the previous change to the queue(3) interface.
It was not discussed and should probably not happen.

Requested by: msmith and others

Change the way that the queue(3) structures are declared; don't assume that
the type argument to *_HEAD and *_ENTRY is a struct.

Suggested by: phk
Reviewed by: phk
Approved by: mdodd

Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot). This is consistant with the other
BSD's who made this change quite some time ago. More commits to come.

Expand the field width for subtypes. We had already overflowed it
by 2 with people just adding numbers on the end of the ethernet subtypes.
We now have an additional 14 subtypes available in ethernet.
Use one of them immediatly for homePNA.

Reviewed by: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>

$Id$ -> $FreeBSD$

Bring the 'new-bus' to the i386. This extensively changes the way the
i386 platform boots, it is no longer ISA-centric, and is fully dynamic.
Most old drivers compile and run without modification via 'compatability
shims' to enable a smoother transition. eisa, isapnp and pccard* are
not yet using the new resource manager. Once fully converted, all drivers
will be loadable, including PCI and ISA.

(Some other changes appear to have snuck in, including a port of Soren's
ATA driver to the Alpha. Soren, back this out if you need to.)

This is a checkpoint of work-in-progress, but is quite functional.

The bulk of the work was done over the last few years by Doug Rabson and
Garrett Wollman.

Approved by: core

Also add 1000baseSX, 1000baseLX, 1000baseCX and 1000baseTX media types. At
this point I don't know if there are any actual gigabit ethernet devices
that support media other than 1000baseSX (multi-mode fiber) but who knows.

Add 1000baseFX, 10baseSTP and 10baseFL media types. The 1000baseFX
type may become necessary soon. :)

Also add a couple of additional macros that NetBSD has which we don't.
Nothing in FreeBSD uses these (yet) so adding them in shouldn't hurt
anything.

World, I'd like you to meet the first FreeBSD token Ring driver.
This is for various Olicom cards. An IBM driver is following.
This patch also adds support to tcpdump to decode packets on tokenring.
Congratulations to the proud father.. (below)

Submitted by: Larry Lile <lile@stdio.com>

Make it compile on FreeBSD, add $Id$

This commit was generated by cvs2svn to compensate for changes in r25428,
which included commits to RCS files with non-trunk default branches.

Backend support for if_media interface ioctl's. This is for supporting
the many-mode, many-media-option type ethernet cards, in particular, the
new if_de.

Obtained from: NetBSD (Their implementation of BSDI's design)