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

Remove /^\s*\*+\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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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

show more ...

netmap: fix refcount bug in netmap allocator

Symptom: when a single extmem memory region is provided to netmap
multiple times, for multiple interfaces, the memory region is
never released by netmap

netmap: fix refcount bug in netmap allocator

Symptom: when a single extmem memory region is provided to netmap
multiple times, for multiple interfaces, the memory region is
never released by netmap once all the existing file descriptors
are closed.

Fix the relevant condition in netmap_mem_drop(): release the memory
when the last user of netmap_adapter is gone, rather then when
the last user of netmap_mem_d is gone.

MFC after: 2 weeks

show more ...

netmap: import changes from upstream

- make sure rings are disabled during resets
- introduce netmap_update_hostrings_mode(), with support
for multiple host rings
- always initialize ni_bufs_h

netmap: import changes from upstream

- make sure rings are disabled during resets
- introduce netmap_update_hostrings_mode(), with support
for multiple host rings
- always initialize ni_bufs_head in netmap_if
ni_bufs_head was not properly initialized when no external buffers were
requestedx and contained the ni_bufs_head from the last request. This
was causing spurious buffer frees when alternating between apps that
used external buffers and apps that did not use them.
- check na validitity under lock on detach
- netmap_mem: fix leak on error path
- nm_dispatch: fix compilation on Raspberry Pi

MFC after: 2 weeks

show more ...

netmap: restore commit a56e6334d1b7ed6e6faaa8b4612d948005ba74f5

The fix in a56e6334d1b7ed6e6faaa8b4612d948005ba74f5
was accidentally reverted by commit 45c67e8f6b56b9744f01142747fadf291fe3fad2.

netmap: several typo fixes

No functional changes intended.

netmap: add kernel support for the "offsets" feature

This feature enables applications to ask netmap to transmit or
receive packets starting at a user-specified offset from the
beginning of the netm

netmap: add kernel support for the "offsets" feature

This feature enables applications to ask netmap to transmit or
receive packets starting at a user-specified offset from the
beginning of the netmap buffer. This is meant to ease those
packet manipulation operations such as pushing or popping packet
headers, that may be useful to implement software switches,
routers and other packet processors.
To use the feature, drivers (e.g., iflib, vtnet, etc.) must have
explicit support. This change does not add support for any driver,
but introduces the necessary kernel changes. However, offsets support
is already included for VALE ports and pipes.

show more ...

netmap: fix constness warnings generated by "-Wcast-qual"

Submitted by: milosz.kaniewski@gmail.com
MFC after: 3 days

net: clean up empty lines in .c and .h files

netmap: check if we already ran mmap before we attempt it

Submitted by: neel@neelc.org
Reviewed by: vmaffione
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D22390

netmap: fix build issue in netmap_user.h

The issue was a comparison of integers of different signs
on 32 bit architectures.

Reported by: jenkins
MFC after: 1 week

Merge ^/head r351317 through r351731.

netmap: import changes from upstream (SHA 137f537eae513)

- Rework option processing.
- Use larger integers for memory size values in the
memory management code.

MFC after: 2 weeks

MFHead@r345275

netmap: add support for multiple host rings

Some applications forward from/to host rings most or all the
traffic received or sent on a physical interface. In this
cases it is desirable to have more

netmap: add support for multiple host rings

Some applications forward from/to host rings most or all the
traffic received or sent on a physical interface. In this
cases it is desirable to have more than a pair of RX/TX host
rings, and use multiple threads to speed up forwarding.
This change adds support for multiple host rings. On registering
a netmap port, the user can specify the number of desired receive
and transmit host rings in the nr_host_tx_rings and nr_host_rx_rings
fields of the nmreq_register structure.

MFC after: 2 weeks

show more ...

Merge ^/head r340918 through r341763.

netmap: align codebase to the current upstream (760279cfb2730a585)

Changelist:
- Replace netmap passthrough host support with a more general
mechanism to call TXSYNC/RXSYNC from an in-kernel e

netmap: align codebase to the current upstream (760279cfb2730a585)

Changelist:
- Replace netmap passthrough host support with a more general
mechanism to call TXSYNC/RXSYNC from an in-kernel event-loop.
No kernel threads are used to use this feature: the application
is required to spawn a thread (or a process) and issue a
SYNC_KLOOP_START (NIOCCTRL) command in the thread body. The
kernel loop is executed by the ioctl implementation, which returns
to userspace only when a different thread calls SYNC_KLOOP_STOP
or the netmap file descriptor is closed.
- Update the if_ptnet driver to cope with the new data structures,
and prune all the obsolete ptnetmap code.
- Add support for "null" netmap ports, useful to allocate netmap_if,
netmap_ring and netmap buffers to be used by specialized applications
(e.g. hypervisors). TXSYNC/RXSYNC on these ports have no effect.
- Various fixes and code refactoring.

Sponsored by: Sunny Valley Networks
Differential Revision: https://reviews.freebsd.org/D18015

show more ...

Merge ^/head r339015 through r339669.

netmap: align codebase to the current upstream (sha 8374e1a7e6941)

Changelist:
- Move large parts of VALE code to a new file and header netmap_bdg.[ch].
This is useful to reuse the code wi

netmap: align codebase to the current upstream (sha 8374e1a7e6941)

Changelist:
- Move large parts of VALE code to a new file and header netmap_bdg.[ch].
This is useful to reuse the code within upcoming projects.
- Improvements and bug fixes to pipes and monitors.
- Introduce nm_os_onattach(), nm_os_onenter() and nm_os_onexit() to
handle differences between FreeBSD and Linux.
- Introduce some new helper functions to handle more host rings and fake
rings (netmap_all_rings(), netmap_real_rings(), ...)
- Added new sysctl to enable/disable hw checksum in emulated netmap mode.
- nm_inject: add support for NS_MOREFRAG

Approved by: gnn (mentor)
Differential Revision: https://reviews.freebsd.org/D17364

show more ...

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

Remove /^\s*\*+\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

show more ...

netmap: fix refcount bug in netmap allocator

Symptom: when a single extmem memory region is provided to netmap
multiple times, for multiple interfaces, the memory region is
never released by netmap

netmap: fix refcount bug in netmap allocator

Symptom: when a single extmem memory region is provided to netmap
multiple times, for multiple interfaces, the memory region is
never released by netmap once all the existing file descriptors
are closed.

Fix the relevant condition in netmap_mem_drop(): release the memory
when the last user of netmap_adapter is gone, rather then when
the last user of netmap_mem_d is gone.

MFC after: 2 weeks

show more ...

netmap: import changes from upstream

- make sure rings are disabled during resets
- introduce netmap_update_hostrings_mode(), with support
for multiple host rings
- always initialize ni_bufs_h

netmap: import changes from upstream

- make sure rings are disabled during resets
- introduce netmap_update_hostrings_mode(), with support
for multiple host rings
- always initialize ni_bufs_head in netmap_if
ni_bufs_head was not properly initialized when no external buffers were
requestedx and contained the ni_bufs_head from the last request. This
was causing spurious buffer frees when alternating between apps that
used external buffers and apps that did not use them.
- check na validitity under lock on detach
- netmap_mem: fix leak on error path
- nm_dispatch: fix compilation on Raspberry Pi

MFC after: 2 weeks

show more ...

netmap: restore commit a56e6334d1b7ed6e6faaa8b4612d948005ba74f5

The fix in a56e6334d1b7ed6e6faaa8b4612d948005ba74f5
was accidentally reverted by commit 45c67e8f6b56b9744f01142747fadf291fe3fad2.

netmap: several typo fixes

No functional changes intended.