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

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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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cxgbe/iw_cxgbe: debug routines to dump STAG (steering tag) entries.

t4_dump_stag to dump hw state for a known STAG.

t4_dump_all_stag to dump hw state for all valid STAGs. This routine
walks the en

cxgbe/iw_cxgbe: debug routines to dump STAG (steering tag) entries.

t4_dump_stag to dump hw state for a known STAG.

t4_dump_all_stag to dump hw state for all valid STAGs. This routine
walks the entire STAG region looking for valid entries and this can take
a while for some configurations.

MFC after: 1 week
Sponsored by: Chelsio Communications

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cxgbe: stop open-coding kref access

Sponsored by: Rubicon Communications, LLC ("Netgate")

ibcore: Kernel space update based on Linux 5.7-rc1.

Overview:

This is the first stage of a RDMA stack upgrade introducing kernel
changes only based on Linux 5.7-rc1.

This patch is based on about f

ibcore: Kernel space update based on Linux 5.7-rc1.

Overview:

This is the first stage of a RDMA stack upgrade introducing kernel
changes only based on Linux 5.7-rc1.

This patch is based on about four main areas of work:
- Update of the IB uobjects system:
- The memory holding so-called AH, CQ, PD, SRQ and UCONTEXT objects
is now managed by ibcore. This also require some changes in the
kernel verbs API. The updated verbs changes are typically about
initialize and deinitialize objects, and remove allocation and
free of memory.

- Update of the uverbs IOCTL framework:
- The parsing and handling of user-space commands has been
completely refactored to integrate with the updated IB uobjects
system.

- Various changes and updates to the generic uverbs interfaces in
device drivers including the new uAPI surface.

- The mlx5_ib_devx.c in mlx5ib and related mlx5 core changes.

Dependencies:

- The mlx4ib driver code has been updated with the minimum changes
needed.

- The mlx5ib driver code has been updated with the minimum changes
needed including DV support.

Compatibility:

- All user-space facing APIs are backwards compatible after this
change.

- All kernel-space facing RDMA APIs are backwards compatible after
this change, with exception of ib_create_ah() and ib_destroy_ah()
which takes a new flag.

- The "ib_device_ops" structure exist, but only contains the driver ID
and some structure sizes.

Differences from Linux:

- Infiniband drivers must use the INIT_IB_DEVICE_OPS() macro to set
the sizes needed for allocating various IB objects, when adding
IB device instances.

Security:

- PRIV_NET_RAW is needed to use raw ethernet transmit features.
- PRIV_DRIVER is needed to use other privileged operations.

Based on upstream Linux, Torvalds (5.7-rc1):
8632e9b5645bbc2331d21d892b0d6961c1a08429

MFC after: 1 week
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D31149
Sponsored by: NVIDIA Networking

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ibcore: Declare ib_post_send() and ib_post_recv() arguments const

Since neither ib_post_send() nor ib_post_recv() modify the data structure
their second argument points at, declare that argument con

ibcore: Declare ib_post_send() and ib_post_recv() arguments const

Since neither ib_post_send() nor ib_post_recv() modify the data structure
their second argument points at, declare that argument const. This change
makes it necessary to declare the 'bad_wr' argument const too and also to
modify all ULPs that call ib_post_send(), ib_post_recv() or
ib_post_srq_recv(). This patch does not change any functionality but makes
it possible for the compiler to verify whether the
ib_post_(send|recv|srq_recv) really do not modify the posted work request.

Linux commit:
f696bf6d64b195b83ca1bdb7cd33c999c9dcf514
7bb1fafc2f163ad03a2007295bb2f57cfdbfb630
d34ac5cd3a73aacd11009c4fc3ba15d7ea62c411

MFC after: 1 week
Reviewed by: kib
Sponsored by: Mellanox Technologies // NVIDIA Networking

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cxgbe/iw_cxgbe: Support for 512 SGL entries in one memory registration.

Use the correct SGL limit within iw_cxgbe, firmwares >= 1.25.6.0 support
upto 512 entries per MR.

Obtained from: Chelsio Comm

cxgbe/iw_cxgbe: Support for 512 SGL entries in one memory registration.

Use the correct SGL limit within iw_cxgbe, firmwares >= 1.25.6.0 support
upto 512 entries per MR.

Obtained from: Chelsio Communications
MFC after: 1 week
Sponsored by: Chelsio Communications

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cxgbe(4): Remove some dead code.

MFC after: 3 days

cxgbe: remove unused linux headers

Remove unused #includes of LinuxKPI headers noticed while trying to
solve LinuxKPI struct net_device and related functions.
Neither netdevice.h nor inetdevice.h no

cxgbe: remove unused linux headers

Remove unused #includes of LinuxKPI headers noticed while trying to
solve LinuxKPI struct net_device and related functions.
Neither netdevice.h nor inetdevice.h nor notifier.h seem to be needed.
This takes cxgbe(4) out of the picture of D29366.

Sponsored-by: The FreeBSD Foundation
MFC-after: 2 weeks
Reviewed-by: np
X-D-R: D29366 (extracted as further cleanup)
Differential Revision: https://reviews.freebsd.org/D29432

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cxgbe/iw_cxgbe: Create a LinuxKPI pci device for an adapter and use it
as the dma_device during RDMA registration.

cxgbe's struct device cannot be used as-is because it's a native FreeBSD
driver and

cxgbe/iw_cxgbe: Create a LinuxKPI pci device for an adapter and use it
as the dma_device during RDMA registration.

cxgbe's struct device cannot be used as-is because it's a native FreeBSD
driver and ibcore is LinuxKPI based.

MFC after: 1 week
MFC after: r360196

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cxgbe/iw_cxgbe: Do not allow memory registrations with page size greater
than 128MB, which is the maximum supported by the hardware in RDMA mode.

Obtained from: Chelsio Communications
MFC after: 3 d

cxgbe/iw_cxgbe: Do not allow memory registrations with page size greater
than 128MB, which is the maximum supported by the hardware in RDMA mode.

Obtained from: Chelsio Communications
MFC after: 3 days
Sponsored by: Chelsio Communications

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cxgbe/iw_cxgbe: Remove unused field from the endpoint structure.

MFC after: 3 days

iw_cxgbe: Remove unused smac_idx from the ep structure.

Submitted by: Krishnamraju Eraparaju @ Chelsio

cxgbe/iw_cxgbe: Use DSGLs to write to card's memory when appropriate.

Submitted by: Krishnamraju Eraparaju @ Chelsio
Sponsored by: Chelsio Communications

Remove unused stuff from iw_cxgbe.h

iw_cxgbe: Remove declaration of a function that no longer exists.

cxgbe/iw_cxgbe: Remove duplicates to fix compilation with recent gcc.

sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error

sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

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.

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Update the iw_cxgbe bits in the projects branch.

Submitted by: Krishnamraju Eraparaju @ Chelsio
Sponsored by: Chelsio Communications

cxgbe/iw_cxgbe: Pull in some updates to c4iw_wait_for_reply from the
iw_cxgb4 Linux driver.

Obtained from: Chelsio Communications
MFC after: 3 days
Sponsored by: Chelsio Communications

cxgbe/iw_cxgbe: Defer the handling of error CQEs and RDMA_TERMINATE to
the thread that deals with socket state changes. This eliminates
various bad races with the ithread.

Submitted by: KrishnamRaj

cxgbe/iw_cxgbe: Defer the handling of error CQEs and RDMA_TERMINATE to
the thread that deals with socket state changes. This eliminates
various bad races with the ithread.

Submitted by: KrishnamRaju ErapaRaju @ Chelsio (original version)
MFC after: 3 days
Sponsored by: Chelsio Communications

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cxgbe/iw_cxgbe: Implement sq/rq drain operation.

ULPs can set a qp's state to ERROR and then post a work request on the
sq and/or rq. When the reply for that work request comes back it is
guarantee

cxgbe/iw_cxgbe: Implement sq/rq drain operation.

ULPs can set a qp's state to ERROR and then post a work request on the
sq and/or rq. When the reply for that work request comes back it is
guaranteed that all previous work requests posted on that queue have
been drained.

Obtained from: Chelsio Communications
MFC after: 3 days
Sponsored by: Chelsio Communications

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cxgbe/iw_cxgbe: fix various double-close panics with iWARP sockets.

Sockets representing the TCP endpoints for iWARP connections are
allocated by the ibcore module. Before this revision they were c

cxgbe/iw_cxgbe: fix various double-close panics with iWARP sockets.

Sockets representing the TCP endpoints for iWARP connections are
allocated by the ibcore module. Before this revision they were closed
either by the ibcore module or the iw_cxgbe hardware driver depending on
the state transitions during connection teardown. This is error prone
and there were cases where both iw_cxgbe and ibcore closed the socket
leading to double-free panics. The fix is to let ibcore close the
sockets it creates and never do it in the driver.

- Use sodisconnect instead of soclose (preceded by solinger = 0) in the
driver to tear down an RDMA connection abruptly. This does what's
intended without releasing the socket's fd reference.

- Close the socket in ibcore when the iWARP iw_cm_id is destroyed. This
works for all kinds of sockets: clients that initiate connections,
listeners, and sockets accepted off of listeners.

Reviewed by: Steve Wise @ Open Grid Computing, hselasky@
MFC after: 3 days
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D9796

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cxgbe/iw_cxgbe: Various fixes to the iWARP driver.

- Return appropriate error code instead of ENOMEM when sosend() fails in
send_mpa_req.
- Fix for problematic race during destroy_qp.
- Abortive c

cxgbe/iw_cxgbe: Various fixes to the iWARP driver.

- Return appropriate error code instead of ENOMEM when sosend() fails in
send_mpa_req.
- Fix for problematic race during destroy_qp.
- Abortive close in the failure of send_mpa_reject() instead of normal close.
- Remove the unnecessary doorbell flowcontrol logic.

Submitted by: Krishnamraju Eraparaju at Chelsio
MFC after: 1 month
Sponsored by: Chelsio communications

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cxgbe(4): Changes to the CPL-handler registration mechanism and code
related to "shared" CPLs.

a) Combine t4_set_tcb_field and t4_set_tcb_field_rpl into a single
function. Allow callers to direct t

cxgbe(4): Changes to the CPL-handler registration mechanism and code
related to "shared" CPLs.

a) Combine t4_set_tcb_field and t4_set_tcb_field_rpl into a single
function. Allow callers to direct the response to any iq. Tidy up
set_ulp_mode_iscsi while there to use names from t4_tcb.h instead of
magic constants.

b) Remove all CPL handler tables from struct adapter. This reduces its
size by around 2KB. All handlers are now registered at MOD_LOAD instead
of attach or some kind of initialization/activation. The registration
functions do not need an adapter parameter any more.

c) Add per-iq handlers to deal with CPLs whose destination cannot be
determined solely from the opcode. There are 2 such CPLs in use right
now: SET_TCB_RPL and L2T_WRITE_RPL. The base driver continues to send
filter and L2T_WRITEs over the mgmtq and solicits the reply on fwq.
t4_tom (including the DDP code) now uses the port's ctrlq to send
L2T_WRITEs and SET_TCB_FIELDs and solicits the reply on an ofld_rxq.
fwq and ofld_rxq have different handlers that know what kind of tid to
expect in the reply. Update t4_write_l2e and callers to to support any
wrq/iq combination.

Approved by: re@ (kib@)
Sponsored by: Chelsio Communications

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