Commit graph

506942 commits

Author SHA1 Message Date
Philipp Zabel
540d70d577 [media] coda: free context buffers under buffer mutex
Make sure the buffer_mutex lock is taken in coda_bit_release
while coda_free_framebuffers and coda_free_context_buffers
are called.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:32:25 -02:00
Philipp Zabel
747d764611 [media] coda: make seq_end_work optional
In preparation for CODA9 JPEG support, which doesn't have to call
SEQ_END on the BIT processor.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:32:05 -02:00
Philipp Zabel
bb04aa6f7e [media] coda: switch BIT decoder source queue to vmalloc
Since we have to copy from input buffers into the bitstream ringbuffer
with the CPU, there is no need for contiguous DMA buffers on the decoder
input side.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:31:35 -02:00
Philipp Zabel
8e428d5040 [media] coda: add coda_estimate_sizeimage and use it in set_defaults
Call coda_estimate_sizeimage from both try_fmt and set_defaults to
avoid this v4l2-compliance warning on the h.264 decoder video device:

    G_FMT:     1920x1088, 32315559, 1, 1920, 1048576, 3, 0, 0, feedcafe
    TRY/S_FMT: 1920x1088, 32315559, 1, 1920, 3133440, 3, 0, 0, feedcafe
    fail: v4l2-test-formats.cpp(948): Video Capture: S_FMT(G_FMT) != G_FMT

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:31:10 -02:00
Philipp Zabel
e3cccff9aa [media] coda: don't ever use subsampling ping-pong buffers as reconstructed reference buffers
On i.MX6, two subsampling ping-pong buffers are used for motion estimation and
deblocking They should not be counted as framebuffers, or they will be also used
to store reconstructed frames, causing visible artifacts in P-frames.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:26:31 -02:00
Philipp Zabel
f4706d6e6d [media] coda: issue seq_end_work during stop_streaming
This patch queues seq_end_work and flushes the queue during stop_streaming
and clears the ctx->initialized flag. This allows to start streaming again
after stopping streaming without releasing the context.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:25:36 -02:00
Philipp Zabel
6dd5ef5bdd [media] coda: remove unused isequence, reset qsequence in stop_streaming
The isequence counter is never used, qsequence counts the buffers queued into
the bit decoder bitstream ringbuffer. It needs to be reset in stop_streaming.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:25:14 -02:00
Markus Pargmann
31db5adb4e [media] coda: fix width validity check when starting to decode
Compare rounded up width to fit into bytesperline.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:24:57 -02:00
Philipp Zabel
8c9ef6b16c [media] coda: clear RET_DEC_PIC_SUCCESS flag in prepare_decode
To make sure a set RET_DEC_PIC_SUCCESS flag is not a leftover from
a previous successful run, clear it in prepare_decode.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:23:41 -02:00
Philipp Zabel
811a6934c2 [media] coda: initialize SRAM on probe
Zeroing the SRAM on probe helps with debugging SRAM contents.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:23:16 -02:00
Bo Shen
56bbd86c2e ASoC: atmel-pcm-dma: won't check direction when configure dma
As DMA framework request DMA using direction only in prep_slave
function, (The At91 xdma driver has adapted to this request).
So won't check direction when do DMA configuration.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-02-02 12:18:45 +00:00
Ricardo Ribalda Delgado
34093cb97a spi/xilinx: Fix access invalid memory on xilinx_spi_tx
On 1 and 2 bytes per word, the transfer of the 3 last bytes will access
memory outside tx_ptr.

Although this has not trigger any error on real hardware, we should
better fix this.

Fixes: 24ba5e593f (Remove rx_fn and tx_fn pointer)
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-02-02 12:17:19 +00:00
Mark Brown
927db287ba regmap: ac97: Clean up indentation
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-02-02 12:13:39 +00:00
Philipp Zabel
1c2f6a9983 [media] coda: properly clear f_cap in coda_s_fmt_vid_out
Properly zero the structure on the stack before using it.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:02:13 -02:00
Philipp Zabel
5f9826e8a7 [media] coda: fix try_fmt_vid_out colorspace setting
v4l2-compliance complains about invalid colorspace settings being accepted
on the output side. This patch only allows REC709 and JPEG.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:01:39 -02:00
Philipp Zabel
f77fd8a9b1 [media] coda: fix job_ready debug reporting for bitstream decoding
Clarify whether job_ready returns false because the context is on hold, waiting
for new input buffers, whether there are not enough input buffers to fill two
into the bitstream, or whether there is not enough data in the bitstream buffer
for the bitstream reader hardware to read a whole frame.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:01:09 -02:00
Jie Yang
97fa99a3b8 MAINTAINERS: ASoC: add maintainer for Intel BDW/HSW ASoC driver
Adding myself as the Intel BDW/HSW ASoC driver maintainer.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Acked-by: Liam Girdwood <lgirdwood@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-02-02 12:00:20 +00:00
Lucas Stach
83f31c8a5f [media] coda: adjust sequence offset after unexpected decoded frame
If userspace doesn't properly separate the bitstream input into
individual frames (which may happen for example on slightly
corrupted streams) the CODA hardware may decode more frames
than we expect. We already log an error in this case, but it's
also necessary to adjust the sequence offset. Otherwise we
spam the log with a sequence number mismatch on every frame
frame after the unexpected one.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 10:00:10 -02:00
Philipp Zabel
07ba277f89 [media] coda: move meta out of padding
Handle an empty buffer metadata list without crashing. This can happen
if the decoder is fed a broken stream, or multiple compressed frames in
a single queued buffer.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 09:59:53 -02:00
Philipp Zabel
e1519e866b [media] coda: remove context debugfs entry last
Do not remove the per-context debugfs directory before the
per-buffer debugfs entries contained therein.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 09:59:11 -02:00
Philipp Zabel
27d056f67f [media] coda: fix encoder rate control parameter masks
This patch fixes the ENC_SEQ_RC_PARA initial delay and bitrate masks.
These bit fields are 15 bit wide, not 7 bit.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 09:58:49 -02:00
Fabian Frederick
ea0944e079 [media] s5p-mfc: remove unnecessary version.h inclusion
Based on versioncheck.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 09:58:35 -02:00
Fabian Frederick
ef8fab7f99 [media] s5p-g2d: remove unnecessary version.h inclusion
Based on versioncheck.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 09:58:23 -02:00
Nicolas Dufresne
faf571144c [media] media-doc: Fix MFC display delay control doc
The V4L2_CID_MPEG_MFC51_VIDEO_DECODER_H264_DISPLAY_DELAY_ENABLE control
is a boolean but was documented as a integer. The documentation was
also slightly miss-leading.

Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Acked-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 09:58:10 -02:00
Nicolas Dufresne
68e77d2e6e [media] s5p-mfc-dec: Don't use encoder stop command
The decoder should handle V4L2_DEC_CMD_STOP to trigger drain,
but it currently expecting V4L2_ENC_CMD_STOP.

Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Acked-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 09:57:36 -02:00
Nicolas Dufresne
1b880ef62c [media] s5p-mfc-v6+: Use display_delay_enable CID
The MFC driver has two controls, DISPLAY_DELAY and DISPLAY_DELAY_ENABLE
that allow forcing the decoder to return a decoded frame sooner
regardless of the order. The added support for firmware version 6 and
higher was not taking into account the DISPLAY_DELAY_ENABLE boolean.
Instead it had a comment stating that DISPLAY_DELAY should be set to a
negative value to disable it. This is not possible since the control
range is from 0 to 65535. This feature was also supposed to be disabled
by default in order to produce frames in display order.

Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Acked-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-02 09:57:14 -02:00
Vineet Gupta
ffb7fcd66f ARC: Dynamically determine BASE_BAUD from DeviceTree
8250 earlycon is broken on multi-platform ARC because the UART clk
value (BASE_BAUD) is fixed at build time.

Instead, determine the appropriate UART clk at runtime; parse the
devicetree early for platforms requiring alternate UART clk values
(currently only the TB10X platform).

Cc: Jiri Slaby <jslaby@suse.cz>
Cc: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Rob Herring <robh@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-02 17:08:37 +05:30
Tobias Klauser
7bf6df575f arc: Remove unused prepare_to_copy()
prepare_to_copy() was removed from all architectures supported at that
time in commit 55ccf3fe3f ("fork: move the real prepare_to_copy()
users to arch_dup_task_struct()"). Remove it from arc as well.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-02 17:08:37 +05:30
Vineet Gupta
7082a29c22 ARC: use ACCESS_ONCE in cmpxchg loop
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-02 17:08:37 +05:30
Vineet Gupta
98edfab4c1 ARC: add some more comments to ret_from_fork
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-02 17:08:37 +05:30
Vineet Gupta
4c86231c14 ARC: fix /proc/cpuinfo for offline cpus
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-02 17:08:37 +05:30
Nicolas Ferre
ad3fc3e316 ARM: at91/trivial: unify functions and machine names
Remove the string "(Device Tree)" after the machine name because all AT91
machines use the DT nowadays.
Also change some function names to unify following the convention:
- at91sam9xxx aren't named sam9, 9xxx but with the full name
- sama5 are the ones that don't have the at91 prefix anymore.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:29 +01:00
Alexandre Belloni
827de1f123 ARM: at91: remove at91_dt_initialize and machine init_early()
Move the ramc initialization to pm.c as it is the only user left.
This allows us to get rid of at91_dt_initialize() that was the only one called
by the init_early() function pointer of struct machine_desc.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: adapt patch to newer series]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:29 +01:00
Nicolas Ferre
cac0172389 ARM: at91: change board files into SoC files
As board files are now DT only and can address all aspects of the SoC family,
we can rename them so that the mach-at91 directory looks cleaner.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:28 +01:00
Alexandre Belloni
edd942247f ARM: at91: remove at91_boot_soc
at91_boot_soc and at91_init_soc structures are not used by any SoC, remove
their use. Also remove all the now empty SoC files.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: different organization of the patches]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:28 +01:00
Nicolas Ferre
6bd3e3f491 ARM: at91: move alternative initial mapping to board-dt-sama5.c
For sama5d4, remove an indirection and the remaining need for at91_boot_soc
structure.
This will allow further cleanup.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:27 +01:00
Alexandre Belloni
2b019a43cc ARM: at91: merge all SOC_AT91SAM9xxx
Only use SOC_AT91SAM9 for all the at91sam9 SoCs. It removes all the empty
at91sam9xxx.c SoC files. It also removes the useless at91_init_soc affectation
procedure and its "init" function pointer.
Only the SoC detection and display are kept for the at91sam9:
at91_soc_is_enabled() and at91_boot_soc.map_io() function calls are also
removed.

It enables HAVE_AT91_SMD and HAVE_AT91_UTMI for all the sam9 SoCs but this only
represents 96 bytes of uncompressed kernel code.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: different organization of the patches]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:26 +01:00
Alexandre Belloni
7d7ffd7bae ARM: at91: at91rm9200: set idle and restart from rm9200_dt_device_init()
Setup arm_pm_idle and arm_pm_restart function pointers from
rm9200_dt_device_init() function to simplify the at91rm9200 initialization
process.
This same move is already done for the sam9s.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: adapt patch to newer series]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:26 +01:00
Nicolas Ferre
980657d8cd Third batch of cleanup/soc for 3.20:
- several fixes and adjustments following the last cleanup batch
 - removal of some unused Kconfig options
 - slight PM and pm_idle rework to ease future rework
 - removal of unneeded mach/system_rev.h
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQEcBAABAgAGBQJUxjj9AAoJEAf03oE53VmQGEAH/3nLneCOQeyuq60adx+Lxcdn
 Q9sMMzrw4B6bQnJee7+PQD3/QU7fmF8qNKlMKYAlILFHGNQplASi4uAfRTykUA0j
 RQHpS9n20ODVfX+yePJ/o8h2r1BkT2wUIDXxaZCj2RoPmEz1aiFDNa2pPsUfprRd
 gpbh+ZU43LRowYwH9UHPV55PQ0ZwMq3ry2DOYY5Al1+bKQ8TFvAdDMUu3rGZU7A4
 dMYiQCQ6Fv0EI1NY0IHSf/u/jujlPE2H0TSR38w8lYfIPzBx2tHkLSupuxKh7R1N
 QYibgZXWR0PqHOXMpOHYBqJFj5c3f/aOZ/dO4RJha+S7YHNQnIFzLsm122njgKQ=
 =KgUm
 -----END PGP SIGNATURE-----

Merge tag 'at91-cleanup3' into at91-3.20-soc
2015-02-02 10:59:34 +01:00
Nicolas Ferre
c5517b1ea7 Merge branch 'at91-3.19-fixes' into at91-3.20-soc 2015-02-02 10:58:59 +01:00
Lars-Peter Clausen
cd145af998 mtd: nand: jz4740: Convert to GPIO descriptor API
Use the GPIO descriptor API instead of the deprecated legacy GPIO API to
manage the busy GPIO.

The patch updates both the jz4740 nand driver and the only user of the driver
the qi-lb60 board driver.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-02-02 01:04:36 -08:00
Marcel Holtmann
b970c5ba9d Bluetooth: Set HCI_QUIRK_STRICT_DUPLICATE_FILTER for BTUSB_INTEL_NEW
The Intel Snowfield Peak Bluetooth controllers use a strict scanning
filter policy that filters based on Bluetooth device addresses and
not on RSSI.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-02-02 10:17:46 +02:00
Jakub Pawlowski
4b0e0ceddf Bluetooth: Add restarting to service discovery
When using LE_SCAN_FILTER_DUP_ENABLE, some controllers would send
advertising report from each LE device only once. That means that we
don't get any updates on RSSI value, and makes Service Discovery very
slow. This patch adds restarting scan when in Service Discovery, and
device with filtered uuid is found, but it's not in RSSI range to send
event yet. This way if device moves into range, we will quickly get RSSI
update.

Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-02-02 08:52:34 +01:00
Jakub Pawlowski
2d28cfe7aa Bluetooth: Add le_scan_restart work for LE scan restarting
Currently there is no way to restart le scan, and it's needed in
service scan method. The way it work: it disable, and then enable le
scan on controller.

During the restart, we must remember when the scan was started, and
it's duration, to later re-schedule the le_scan_disable work, that was
stopped during the stop scan phase.

Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-02-02 08:52:33 +01:00
Oded Gabbay
b9dce23ddc drm/amdkfd: Don't create BUG due to incorrect user parameter
This patch changes a BUG_ON() statement to pr_debug, in case the user tries to
update a non-existing queue.

Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Reviewed-by: Ben Goz <ben.goz@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2015-02-02 09:45:24 +02:00
Oded Gabbay
ca400b2a1a drm/amdkfd: max num of queues can't be 0
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2015-02-02 09:45:24 +02:00
Oded Gabbay
8b58f26111 drm/amdkfd: Fix bug in accounting of queues
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2015-02-02 09:45:24 +02:00
David Ahern
9766e97af1 net: rocker: Add support for retrieving port level statistics
Add support for retrieving port level statistics from device.
Hook is added for ethtool's stats functionality. For example,

$ ethtool -S eth3
NIC statistics:
     rx_packets: 12
     rx_bytes: 2790
     rx_dropped: 0
     rx_errors: 0
     tx_packets: 8
     tx_bytes: 728
     tx_dropped: 0
     tx_errors: 0

Signed-off-by: David Ahern <dsahern@gmail.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-01 23:17:39 -08:00
David S. Miller
fe3ef61653 Merge branch 'switchdev_offload_flags'
Roopa Prabhu says:

====================
switchdev offload flags

This patch series introduces new offload flags for switchdev.
Kernel network subsystems can use this flag to accelerate
network functions by offloading to hw.

I expect that there will be need for subsystem specific feature
flag in the future.

This patch series currently only addresses bridge driver link
attribute offloads to hardware.

Looking at the current state of bridge l2 offload in the kernel,
    - flag 'self' is the way to directly manage the bridge device in hw via
      the ndo_bridge_setlink/ndo_bridge_getlink calls

    - flag 'master' is always used to manage the in kernel bridge devices
      via the same ndo_bridge_setlink/ndo_bridge_getlink calls

Today these are used separately. The nic offloads use hwmode "vepa/veb" to go
directly to hw with the "self" flag.

At this point i am trying not to introduce any new user facing flags/attributes.
In the model where we want the kernel bridging to be accelerated with
hardware, we very much want the bridge driver to be involved.

In this proposal,
- The offload flag/bit helps switch asic drivers to indicate that they
  accelerate the kernel networking objects/functions
- The user does not have to specify a new flag to do so. A bridge created with
  switch asic ports will be accelerated if the switch driver supports it.
- The user can continue to directly manage l2 in nics (ixgbe) using the
  existing hwmode/self flags
- It also does not stop users from using the 'self' flag to talk to the
  switch asic driver directly
- Involving the bridge driver makes sure the add/del notifications to user
  space go out after both kernel and hardware are programmed

(To selectively offload bridge port attributes,
example learning in hw only etc, we can introduce offload bits for
per bridge port flag attribute as in my previous patch
https://patchwork.ozlabs.org/patch/413211/. I have not included that in this
series)

v2
   - try a different name for the offload flag/bit
   - tries to solve the stacked netdev case by traversing the lowerdev
     list to reach the switch port

v3 -
    - Tested with bond as bridge port for the stacked device case.
      Includes a bond_fix_features change to not ignore the
      NETIF_F_HW_NETFUNC_OFFLOAD flag
    - Some checkpatch fixes

v4 -
    - rename flag to NETIF_F_HW_SWITCH_OFFLOAD
    - add ndo_bridge_setlink/dellink handlers in bond and team drivers as
      suggested by jiri.
    - introduce default ndo_dflt_netdev_switch_port_bridge_setlink/dellink
    handlers that masters can use to call offload api on lowerdevs.
====================

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
2015-02-01 23:16:40 -08:00
Roopa Prabhu
a16a8ee7f6 team: handle NETIF_F_HW_SWITCH_OFFLOAD flag and add ndo_bridge_setlink/dellink handlers
Currently ndo_bridge_setlink and ndo_bridge_dellink handlers point
to the default switchdev handlers

This follows my bonding driver changes.

I have only compile tested this patch. However similar
bonding code has been tested.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-01 23:16:34 -08:00