cxgbe(4): Block most access to the hardware as soon as the adapter stops.

Add a new hw_all_ok() routine and use it to avoid hardware access in the
public control interfaces (ifnet ioctls, ifmedia ca

cxgbe(4): Block most access to the hardware as soon as the adapter stops.

Add a new hw_all_ok() routine and use it to avoid hardware access in the
public control interfaces (ifnet ioctls, ifmedia calls, etc.). Continue
to use hw_off_limits() in the private ioctls/sysctls and other debug
code. Retire adapter_stopped() as it's of no use by itself.

This fixes problems where ifnet slow-path operations would enter a
synch_op just before set_adapter_hwstatus(false) and touch the hardware
when it's not safe to do so.

MFC after: 1 week
Sponsored by: Chelsio Communications

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

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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Mechanically convert cxgb(4) and cxgbe(4) to IfAPI

Reviewed by: np
Sponsored by: Juniper Networks, Inc.
Differential Revision: https://reviews.freebsd.org/D38597

cxgbe(4): Empty the clib_db before trying to destroy it.

This fixes a panic on driver unload.

Reported by: Jithesh Arakkan @ Chelsio
MFC after: 1 week
Sponsored by: Chelsio Communications

cxgbe(4): Use correct argument in call to hashdestroy.

This fixes a panic on driver module unload.

Fixes: 24b98f288d11 cxgbe(4): Overhaul CLIP (Compressed Local IPv6) table management.
MFC after: 2

cxgbe(4): Use correct argument in call to hashdestroy.

This fixes a panic on driver module unload.

Fixes: 24b98f288d11 cxgbe(4): Overhaul CLIP (Compressed Local IPv6) table management.
MFC after: 2 weeks
Sponsored by: Chelsio Communications

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cxgbe(4): Overhaul CLIP (Compressed Local IPv6) table management.

- Process the list of local IPs once instead of once per adapter. Add
addresses from all VNETs to the driver's list but leave har

cxgbe(4): Overhaul CLIP (Compressed Local IPv6) table management.

- Process the list of local IPs once instead of once per adapter. Add
addresses from all VNETs to the driver's list but leave hardware
updates for later when the global VNET/IFADDR list locks have been
released.

- Add address to the hardware table synchronously when a CLIP entry is
requested for an address that's not already in there.

- Provide ioctls that allow userspace tools to manage addresses in the
CLIP table.

- Add a knob (hw.cxgbe.clip_db_auto) that controls whether local IPs are
automatically added to the CLIP table or not.

MFC after: 2 weeks
Sponsored by: Chelsio Communications

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cxgbe(4): Use ifaddr_event_ext instead of ifaddr_event for CLIP management.

The _ext event notification includes the address being added/removed and
that gives the driver an easy way to ignore non-I

cxgbe(4): Use ifaddr_event_ext instead of ifaddr_event for CLIP management.

The _ext event notification includes the address being added/removed and
that gives the driver an easy way to ignore non-IPv6 addresses. Remove
'tom' from the handler's name while here, it was moved out of t4_tom a
long time ago.

MFC after: 1 week
Sponsored by: Chelsio Communications

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cxgbe(4): Add support for NIC suspend/resume and live reset.

Add suspend/resume callbacks to the driver and a live reset built around
them. This commit covers the basic NIC and future commits will

cxgbe(4): Add support for NIC suspend/resume and live reset.

Add suspend/resume callbacks to the driver and a live reset built around
them. This commit covers the basic NIC and future commits will expand
this functionality to other stateful parts of the chip. Suspend and
resume operate on the chip (the t?nex nexus device) and affect all its
ports. It is not possible to suspend/resume or reset individual ports.
All these operations can be performed on a running NIC. A reset will
look like a link bounce to the networking stack.

Here are some ways to exercise this functionality:

/* Manual suspend and resume. */
# devctl suspend t6nex0
# devctl resume t6nex0

/* Manual reset. */
# devctl reset t6nex0

/* Manual reset with driver sysctl. */
# sysctl dev.t6nex.0.reset=1

/* Automatic adapter reset on any fatal error. */
# hw.cxgbe.reset_on_fatal_err=1

Suspend disables the adapter (DMA, interrupts, and the port PHYs) and
marks the hardware as unavailable to the driver. All ifnets associated
with the adapter are still visible to the kernel but operations that
require hardware interaction will fail with ENXIO. All ifnets report
link-down while the adapter is suspended.

Resume will reattach to the card, reconfigure it as before, and recreate
the queues servicing the existing ifnets. The ifnets are able to send
and receive traffic as soon as the link comes back up.

Reset is roughly the same as a suspend and a resume with at least one of
these events in between: D0->D3Hot->D0, FLR, PCIe link retrain.

MFC after: 1 month
Relnotes: yes
Sponsored by: Chelsio Communications

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cxgbe: Ignore doomed virtual interfaces when updating the clip table.

A doomed VI does not have a valid ifnet.

Reported by: Jithesh Arakkan @ Chelsio
Reviewed by: np
MFC after: 1 week
Sponsored by:

cxgbe: Ignore doomed virtual interfaces when updating the clip table.

A doomed VI does not have a valid ifnet.

Reported by: Jithesh Arakkan @ Chelsio
Reviewed by: np
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D29662

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cxgbe(4): Allow a T6 adapter to switch between TOE and NIC TLS mode.

The hw.cxgbe.kern_tls tunable was used for this in the past and if it
was set then all T6 adapters would be configured for NIC TL

cxgbe(4): Allow a T6 adapter to switch between TOE and NIC TLS mode.

The hw.cxgbe.kern_tls tunable was used for this in the past and if it
was set then all T6 adapters would be configured for NIC TLS operation
and could not be reconfigured for TOE without a reload. With this
change ifconfig can be used to manipulate toe and txtls caps like any
other caps. hw.cxgbe.kern_tls continues to work as usual but its
effects are not permanent any more.

* Enable nic_ktls_ofld in the default configuration file and use the
firmware instead of direct register manipulation to apply/rollback
NIC TLS configuration. This allows the driver to switch the hardware
between TOE and NIC TLS mode in a safe manner. Note that the
configuration is adapter-wide and not per-port.

* Remove the kern_tls config file as it works with 100G T6 cards only
and leads to firmware crashes with 25G cards. The configurations
included with the driver (with the exception of the FPGA configs) are
supposed to work with all adapters.

Reported by: Veeresh U.K. at Chelsio
MFC after: 2 weeks
Sponsored by: Chelsio Communications
Reviewed by: jhb@
Differential Revision: https://reviews.freebsd.org/D29291

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cxgbe(4): Do not display error messages related to the CLIP table if
it's not in use by TOE or KTLS.

Reviewed by: jhb@
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: h

cxgbe(4): Do not display error messages related to the CLIP table if
it's not in use by TOE or KTLS.

Reviewed by: jhb@
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D24046

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cxgbe(4): Do not issue mbox commands after t4_fw_bye.

Sponsored by: Chelsio Communications

Merge ^/head r340918 through r341763.

Make most of the CLIP code conditional on #ifdef INET6.

This fixes builds of kernels without INET6 such as LINT-NOINET6.

Reported by: arybchik
Reviewed by: np
Sponsored by: Chelsio Communications
D

Make most of the CLIP code conditional on #ifdef INET6.

This fixes builds of kernels without INET6 such as LINT-NOINET6.

Reported by: arybchik
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D18384

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Move CLIP table handling out of TOM and into the base driver.

- Store the clip table in 'struct adapter' instead of in the TOM softc.
- Init the clip table during attach and teardown during detach.

Move CLIP table handling out of TOM and into the base driver.

- Store the clip table in 'struct adapter' instead of in the TOM softc.
- Init the clip table during attach and teardown during detach.
- While here, add a dev.<nexus>.<unit>.misc.clip sysctl to dump the
CLIP table.

This does mean that we update the clip table even if TOE is not enabled,
but non-TOE things need the CLIP table anyway.

Reviewed by: np, Krishnamraju Eraparaju @ Chelsio
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D18010

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