s390/net: Remove LCS driver

The original Open Systems Adapter (OSA) was introduced by IBM in the
mid-90s. These were then superseded by OSA-Express in 1999 which used
Queued Direct IO to greatly imp

s390/net: Remove LCS driver

The original Open Systems Adapter (OSA) was introduced by IBM in the
mid-90s. These were then superseded by OSA-Express in 1999 which used
Queued Direct IO to greatly improve throughput. The newer cards
retained the older, slower non-QDIO (OSE) modes for compatibility with
older systems. In Linux, the lcs driver was responsible for cards
operating in the older OSE mode and the qeth driver was introduced to
allow the OSA-Express cards to operate in the newer QDIO (OSD) mode.

For an S390 machine from 1998 or later, there is no reason to use the
OSE mode and lcs driver as all OSA cards since 1999 provide the faster
OSD mode. As a result, it's been years since we have heard of a
customer configuration involving the lcs driver.

This patch removes the lcs driver. The technology it supports has been
obsolete for past 25+ years and is irrelevant for current use cases.

Reviewed-by: Alexandra Winter <[email protected]>
Acked-by: Heiko Carstens <[email protected]>
Acked-by: Peter Oberparleiter <[email protected]>
Signed-off-by: Aswin Karuvally <[email protected]>
Signed-off-by: Alexandra Winter <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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s390/ism: ism driver implies smc protocol

Since commit a72178cfe855 ("net/smc: Fix dependency of SMC on ISM")
you can build the ism code without selecting the SMC network protocol.
That leaves some

s390/ism: ism driver implies smc protocol

Since commit a72178cfe855 ("net/smc: Fix dependency of SMC on ISM")
you can build the ism code without selecting the SMC network protocol.
That leaves some ism functions be reported as unused. Move these
functions under the conditional compile with CONFIG_SMC.

Also codify the suggestion to also configure the SMC protocol in ism's
Kconfig - but with an "imply" rather than a "select" as SMC depends on
other config options and allow for a deliberate decision not to build
SMC. Also, mention that in ISM's help.

Fixes: a72178cfe855 ("net/smc: Fix dependency of SMC on ISM")
Reported-by: Randy Dunlap <[email protected]>
Closes: https://lore.kernel.org/netdev/[email protected]/
Signed-off-by: Gerd Bayer <[email protected]>
Reviewed-by: Wenjia Zhang <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Acked-by: Randy Dunlap <[email protected]>
Tested-by: Randy Dunlap <[email protected]> # build-tested
Signed-off-by: David S. Miller <[email protected]>

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net/smc: Fix dependency of SMC on ISM

When the SMC protocol is built into the kernel proper while ISM is
configured to be built as module, linking the kernel fails due to
unresolved dependencies out

net/smc: Fix dependency of SMC on ISM

When the SMC protocol is built into the kernel proper while ISM is
configured to be built as module, linking the kernel fails due to
unresolved dependencies out of net/smc/smc_ism.o to
ism_get_smcd_ops, ism_register_client, and ism_unregister_client
as reported via the linux-next test automation (see link).
This however is a bug introduced a while ago.

Correct the dependency list in ISM's and SMC's Kconfig to reflect the
dependencies that are actually inverted. With this you cannot build a
kernel with CONFIG_SMC=y and CONFIG_ISM=m. Either ISM needs to be 'y',
too - or a 'n'. That way, SMC can still be configured on non-s390
architectures that do not have (nor need) an ISM driver.

Fixes: 89e7d2ba61b7 ("net/ism: Add new API for client registration")
Reported-by: Randy Dunlap <[email protected]>
Closes: https://lore.kernel.org/linux-next/[email protected]/
Co-developed-by: Wenjia Zhang <[email protected]>
Signed-off-by: Wenjia Zhang <[email protected]>
Signed-off-by: Gerd Bayer <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Tested-by: Simon Horman <[email protected]> # build-tested
Acked-by: Randy Dunlap <[email protected]>
Tested-by: Randy Dunlap <[email protected]> # build-tested
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>

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s390/lcs: Remove FDDI option

The last s390 machine that supported FDDI was z900 ('7th generation',
released in 2000). The oldest machine generation currently supported by
the Linux kernel is MARCH_Z

s390/lcs: Remove FDDI option

The last s390 machine that supported FDDI was z900 ('7th generation',
released in 2000). The oldest machine generation currently supported by
the Linux kernel is MARCH_Z10 (released 2008). If there is still a usecase
for connecting a Linux on s390 instance to a LAN Channel Station (LCS), it
can only do so via Ethernet.

Randy Dunlap[1] found that LCS over FDDI has never worked, when FDDI
was compiled as module. Instead of fixing that, remove the FDDI option
from the lcs driver.

While at it, make the CONFIG_LCS description a bit more helpful.

References:
[1] https://lore.kernel.org/netdev/[email protected]/

Signed-off-by: Alexandra Winter <[email protected]>
Acked-by: Christian Borntraeger <[email protected]>
Reviewed-by: Randy Dunlap <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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s390/qeth: Switchdev event handler

QETH HiperSockets devices with LEARNING_SYNC capability can be used
to construct a linux bridge with:
2 isolated southbound interfaces:
a) a default network i

s390/qeth: Switchdev event handler

QETH HiperSockets devices with LEARNING_SYNC capability can be used
to construct a linux bridge with:
2 isolated southbound interfaces:
a) a default network interface
b) a LEARNING-SYNC HiperSockets interface
and 1 non-isolated northbound interface. This is called a 'HiperSockets
Converged Interface' (HSCI).
The existing LEARNING_SYNC functionality is used to update the bridge fdb
with MAC addresses that should be sent-out via the HiperSockets interface,
instead of the default network interface.

Add handling of switchdev events SWITCHDEV_FDB_ADD_TO_DEVICE and
SWITCHDEV_FDB_DEL_TO_DEVICE to the qeth LEARNING_SYNC functionality. Thus
if the northbound bridgeport of an HSCI doesn't only have a single static
MAC address, but instead is a learning bridgeport, work is enqueued, so
the HiperSockets virtual switch (that is external to this Linux instance)
can update its fdb.

When BRIDGE is a loadable module, QETH_L2 mustn't be built-in:

drivers/s390/net/qeth_l2_main.o: in function 'qeth_l2_switchdev_event':
drivers/s390/net/qeth_l2_main.c:927: undefined reference to
'br_port_flag_is_set'

Add Kconfig dependency to enforce usable configurations.

Signed-off-by: Alexandra Winter <[email protected]>
Reviewed-by: Wenjia Zhang <[email protected]>
Signed-off-by: Karsten Graul <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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s390/qeth: remove OSN support

Commit fb64de1bc36c ("s390/qeth: phase out OSN support") spelled out
why the OSN support in qeth is in a bad shape, and put any remaining
interested parties on notice t

s390/qeth: remove OSN support

Commit fb64de1bc36c ("s390/qeth: phase out OSN support") spelled out
why the OSN support in qeth is in a bad shape, and put any remaining
interested parties on notice to speak up before it gets ripped out.

It's 2021 now, so make true on that promise and remove all the
OSN-specific parts from qeth. This also means that we no longer need to
export various parts of the cmd & data path internals to the L2 driver.

Signed-off-by: Julian Wiedmann <[email protected]>
Reviewed-by: Alexandra Winter <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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s390/net: add SMC config as one of the defaults of CCWGROUP

arch/s390/net/pnet.c uses ccwgroup function dev_is_ccwgroup()
in pnetid_by_dev_port().
For s390 the net/smc code makes use of function pne

s390/net: add SMC config as one of the defaults of CCWGROUP

arch/s390/net/pnet.c uses ccwgroup function dev_is_ccwgroup()
in pnetid_by_dev_port().
For s390 the net/smc code makes use of function pnetid_by_dev_port().
Make sure ccwgroup is built into the kernel, if smc is to be built
into the kernel.

Signed-off-by: Guvenc Gulce <[email protected]>
Reviewed-by: Ursula Braun <[email protected]>
Signed-off-by: Karsten Graul <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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s390/qeth: clean up Kconfig help text

Remove a stale doc link. While at it also reword the help text to get
rid of an outdated marketing term.

Signed-off-by: Julian Wiedmann <[email protected]>
Sig

s390/qeth: clean up Kconfig help text

Remove a stale doc link. While at it also reword the help text to get
rid of an outdated marketing term.

Signed-off-by: Julian Wiedmann <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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s390/qeth: phase out OSN support

OSN devices currently spend an awful long time in qeth_l2_set_online()
until various unsupported HW cmds time out. This has been broken for
over two years, ever sinc

s390/qeth: phase out OSN support

OSN devices currently spend an awful long time in qeth_l2_set_online()
until various unsupported HW cmds time out. This has been broken for
over two years, ever since
commit d22ffb5a712f ("s390/qeth: fix IPA command submission race")
triggered a FW bug in cmd processing.
Prior to commit 782e4a792147 ("s390/qeth: don't poll for cmd IO completion"),
this wait for timeout would have even been spent busy-polling.

The offending patch was picked up by stable and all relevant distros,
and yet noone noticed.
OSN setups only ever worked in combination with an out-of-tree blob, and
the last machine that even offered HW with OSN support was released back
in 2015.

Rather than attempting to work-around this FW issue for no actual gain,
add a deprecation warning so anyone who still wants to maintain this
part of the code can speak up. Else rip it all out in 2021.

Signed-off-by: Julian Wiedmann <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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s390/qeth: make OSN / OSX support configurable

The last machine generation that supports OSN is z13, and OSX is only
supported up to z14. Allow users and distros to decide whether they
still need su

s390/qeth: make OSN / OSX support configurable

The last machine generation that supports OSN is z13, and OSX is only
supported up to z14. Allow users and distros to decide whether they
still need support for these device types.

Signed-off-by: Julian Wiedmann <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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s390/Kconfig: pedantic cleanups

Formatting of Kconfig files doesn't look so pretty, so just
take damp cloth and clean it up.

Signed-off-by: Enrico Weigelt, metux IT consult <[email protected]>
Signed-

s390/Kconfig: pedantic cleanups

Formatting of Kconfig files doesn't look so pretty, so just
take damp cloth and clean it up.

Signed-off-by: Enrico Weigelt, metux IT consult <[email protected]>
Signed-off-by: Heiko Carstens <[email protected]>

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s390/ism: add device driver for internal shared memory

Add support for the Internal Shared Memory vPCI Adapter.
This driver implements the interfaces of the SMC-D protocol.

Signed-off-by: Sebastian

s390/ism: add device driver for internal shared memory

Add support for the Internal Shared Memory vPCI Adapter.
This driver implements the interfaces of the SMC-D protocol.

Signed-off-by: Sebastian Ott <[email protected]>
Signed-off-by: Ursula Braun <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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s390/qeth: drop CONFIG_QETH_IPV6

commit "s390/qeth: use ip*_eth_mc_map helpers" removed the last
occurrence of CONFIG_IPV6-dependent code.

Signed-off-by: Julian Wiedmann <[email protected]>
Si

s390/qeth: drop CONFIG_QETH_IPV6

commit "s390/qeth: use ip*_eth_mc_map helpers" removed the last
occurrence of CONFIG_IPV6-dependent code.

Signed-off-by: Julian Wiedmann <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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s390: add a few more SPDX identifiers

Add the correct SPDX license to a few more files under arch/s390 and
drivers/s390 which have been missed to far.
The SPDX identifier is a legally binding shorth

s390: add a few more SPDX identifiers

Add the correct SPDX license to a few more files under arch/s390 and
drivers/s390 which have been missed to far.
The SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.

Signed-off-by: Martin Schwidefsky <[email protected]>

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s390: remove claw driver

claw devices are outdated and no longer supported.
This patch removes the claw driver.

Signed-off-by: Ursula Braun <[email protected]>
Signed-off-by: David S. Miller

s390: remove claw driver

claw devices are outdated and no longer supported.
This patch removes the claw driver.

Signed-off-by: Ursula Braun <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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qeth: s390 ethernet device driver dependency

Compile the s390 10GB ethernet device driver only when
ETHERNET has been defined in the kernel configuration file.
Right now the qeth device driver is al

qeth: s390 ethernet device driver dependency

Compile the s390 10GB ethernet device driver only when
ETHERNET has been defined in the kernel configuration file.
Right now the qeth device driver is always built regardless
of which network connectivity is active.

Signed-off-by: Thomas Richter <[email protected]>
Signed-off-by: Frank Blaschka <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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qeth: Update Kconfig wording

Refer to virtual NICs instead of GuestLANs.

Signed-off-by: Stefan Raspl <[email protected]>
Signed-off-by: Frank Blaschka <[email protected]>
Signed-off-

qeth: Update Kconfig wording

Refer to virtual NICs instead of GuestLANs.

Signed-off-by: Stefan Raspl <[email protected]>
Signed-off-by: Frank Blaschka <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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s390: delete any traces of token ring support

The token ring support is going away from the core kernel.
Divorce the S390 drivers from it in advance.

Cc: Martin Schwidefsky <[email protected]>

s390: delete any traces of token ring support

The token ring support is going away from the core kernel.
Divorce the S390 drivers from it in advance.

Cc: Martin Schwidefsky <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Paul Gortmaker <[email protected]>

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net: Fix references to deleted NET_ETHERNET Kconfig setting.

Change them over to plain "ETHERNET"

Reported-by: Paul Bolle <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
A

net: Fix references to deleted NET_ETHERNET Kconfig setting.

Change them over to plain "ETHERNET"

Reported-by: Paul Bolle <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>

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[S390] cleanup s390 Kconfig

Make use of def_bool and def_tristate where possible and add sensible
defaults to the config symbols where applicable. This shortens the
defconfig file by another ~40 lin

[S390] cleanup s390 Kconfig

Make use of def_bool and def_tristate where possible and add sensible
defaults to the config symbols where applicable. This shortens the
defconfig file by another ~40 lines.

Signed-off-by: Martin Schwidefsky <[email protected]>

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Kconfig: have CCWGROUP depend on CLAW

Since the claw code calls ccwgroup_remove_ccwdev(), we need to make sure
CCWGROUP is enabled when CLAW is enabled. Otherwise we hit fun undefined
references at

Kconfig: have CCWGROUP depend on CLAW

Since the claw code calls ccwgroup_remove_ccwdev(), we need to make sure
CCWGROUP is enabled when CLAW is enabled. Otherwise we hit fun undefined
references at build time:
ERROR: "ccwgroup_remove_ccwdev" [drivers/s390/net/claw.ko] undefined!
ERROR: "ccwgroup_probe_ccwdev" [drivers/s390/net/claw.ko] undefined!
ERROR: "ccwgroup_driver_register" [drivers/s390/net/claw.ko] undefined!
ERROR: "ccwgroup_driver_unregister" [drivers/s390/net/claw.ko] undefined!
ERROR: "ccwgroup_create_from_string" [drivers/s390/net/claw.ko] undefined!

Signed-off-by: Mike Frysinger <[email protected]>
Signed-off-by: Frank Blaschka <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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[S390] smsgiucv_app: deliver z/VM CP special messages (SMSG) as uevents

The smsgiucv_app driver registers a callback with the smsgiucv driver
to receive z/VM CP special messages (SMSG) starting with

[S390] smsgiucv_app: deliver z/VM CP special messages (SMSG) as uevents

The smsgiucv_app driver registers a callback with the smsgiucv driver
to receive z/VM CP special messages (SMSG) starting with "APP".

When the callback is called for special messages, the driver creates
an uevent for the received message. The uevent consists of additional
environment data containing the message prefix ("APP"), message sender,
and message content.

udev rules can be used to trigger application specific actions through
matching the content or sender of the special message.

Signed-off-by: Hendrik Brueckner <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>

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trivial: Kconfig: .ko is normally not included in module names

.ko is normally not included in Kconfig help, make it consistent.

Signed-off-by: Pavel Machek <[email protected]>
Signed-off-by: Jiri Kosin

trivial: Kconfig: .ko is normally not included in module names

.ko is normally not included in Kconfig help, make it consistent.

Signed-off-by: Pavel Machek <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

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qeth: new qeth device driver

List of major changes and improvements:
no manipulation of the global ARP constructor
clean code split into core, layer 2 and layer 3 functionality
better exploitatio

qeth: new qeth device driver

List of major changes and improvements:
no manipulation of the global ARP constructor
clean code split into core, layer 2 and layer 3 functionality
better exploitation of the ethtool interface
better representation of the various hardware capabilities
fix packet socket support (tcpdump), no fake_ll required
osasnmpd notification via udev events
coding style and beautification

Signed-off-by: Frank Blaschka <[email protected]>
Signed-off-by: Jeff Garzik <[email protected]>

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ctcm: infrastructure for replaced ctc driver

ctcm driver supports the channel-to-channel connections of the
old ctc driver plus an additional MPC protocol to provide SNA
connectivity.

This new ctcm

ctcm: infrastructure for replaced ctc driver

ctcm driver supports the channel-to-channel connections of the
old ctc driver plus an additional MPC protocol to provide SNA
connectivity.

This new ctcm driver replaces the existing ctc driver.

Signed-off-by: Peter Tiedemann <[email protected]>
Signed-off-by: Ursula Braun <[email protected]>
Signed-off-by: Jeff Garzik <[email protected]>

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