Commit Graph

176 Commits

Author SHA1 Message Date
Colin Ian King d35ef8f846 rsi: fix memory leak on buf and usb_reg_buf
In the cases where len is too long, the error return path fails to
kfree allocated buffers buf and usb_reg_buf.  The simplest fix is to
perform the sanity check on len before the allocations to avoid having
to do the kfree'ing in the first place.

Detected by CoverityScan, CID#1452258,1452259 ("Resource Leak")

Fixes: 59f73e2ae1 ("rsi: check length before USB read/write register")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-18 10:32:41 +09:00
Gustavo A. R. Silva 4775ae7afe rsi: rsi_91x_ps: remove redundant code in str_psstate
"INVALID_STATE" is already being returned in the default case and this
code cannot be reached.

Addresses-Coverity-ID: 1398384
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-10 04:36:10 +02:00
David S. Miller 6e300769dc wireless-drivers-next patches for 4.15
Mostly fixes this time, but also few new features.
 
 Major changes:
 
 wil6210
 
 * remove ssid debugfs file
 
 rsi
 
 * add WOWLAN support for suspend, hibernate and shutdown states
 
 ath10k
 
 * add support for CCMP-256, GCMP and GCMP-256 ciphers on hardware
   where it's supported (QCA99x0 and QCA4019)
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Merge tag 'wireless-drivers-next-for-davem-2017-11-03' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for 4.15

Mostly fixes this time, but also few new features.

Major changes:

wil6210

* remove ssid debugfs file

rsi

* add WOWLAN support for suspend, hibernate and shutdown states

ath10k

* add support for CCMP-256, GCMP and GCMP-256 ciphers on hardware
  where it's supported (QCA99x0 and QCA4019)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-04 18:07:50 +09:00
David S. Miller 2a171788ba Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Files removed in 'net-next' had their license header updated
in 'net'.  We take the remove from 'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-04 09:26:51 +09:00
Amitkumar Karwar e6b3b2ed3d rsi: fix kbuild reported build errors with CONFIG_PM off
Some wowlan related code was outside CONFIG_PM flag which caused these
build errors. They are fixed by moving that code under CONFIG_PM flag.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: ef71ed0608c ("rsi: sdio: Add WOWLAN support for S5 shutdown state")
Fixes: a24e35fcee0 ("rsi: sdio: Add WOWLAN support for S4 hibernate state")
Fixes: e1ced6422a3 ("rsi: sdio: add WOWLAN support for S3 suspend state")
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-02 19:38:14 +02:00
Amitkumar Karwar 39f1332c52 rsi: move rsi_sdio_reinit_device() out of CONFIG_PM
This function is generic. It doesn't contain wowlan specific code.
It should not be under CONFIG_PM. This patch resolves compilation
errors observed when CONFIG_PM flag is disabled.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: ef71ed0608c ("rsi: sdio: Add WOWLAN support for S5 shutdown state")
Fixes: a24e35fcee0 ("rsi: sdio: Add WOWLAN support for S4 hibernate state")
Fixes: e1ced6422a3 ("rsi: sdio: add WOWLAN support for S3 suspend state")
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-02 19:38:14 +02:00
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Karun Eagalapati 063848c3e1 rsi: sdio: Add WOWLAN support for S5 shutdown state
Unlike other power states, WoWLAN configuration does not come from
mac80211 for shutdown. Hence configuring the WoWLAN from shut down
callback it self. Remaining steps of disabling SDIO interrupts,
setting 'MMC_PM_KEEP_POWER' flag are same as other power states.

Signed-off-by: Karun Eagalapati <karun256@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-10-30 12:50:13 +02:00
Karun Eagalapati b6c8d06c8a rsi: sdio: Add WOWLAN support for S4 hibernate state
We are disabling of interrupts from firmware in freeze handler.
Also setting power management capability KEEP_MMC_POWER to make
device wakeup for WoWLAN trigger.
At restore, we observed a device reset on some platforms. Hence
reloading of firmware and device initialization is performed.

Signed-off-by: Karun Eagalapati <karun256@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-10-30 12:50:12 +02:00
Karun Eagalapati f3ac4e7394 rsi: sdio: add WOWLAN support for S3 suspend state
WoWLAN is supported in RS9113 device through GPIO pin2.
wowlan config frame is internally sent to firmware in mac80211
suspend handler. Also beacon miss threshold and keep-alive time
values are increased to avoid un-necessary disconnection with AP.

Signed-off-by: Karun Eagalapati <karun256@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-10-30 12:50:11 +02:00
Kees Cook dfefb9f8d0 drivers/wireless: rsi: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Cc: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Cc: Pavani Muthyala <pavani.muthyala@redpinesignals.com>
Cc: Karun Eagalapati <karun256@gmail.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-10-27 10:47:00 +03:00
David S. Miller 3732053731 wireless-drivers-next patches for 4.15
The first pull request for 4.15, unusually late this time but still
 relatively small. Also includes merge from wireless-drivers to fix
 conflicts in iwlwifi.
 
 Major changes:
 
 rsi
 
 * add P2P mode support
 
 * sdio suspend and resume support
 
 iwlwifi
 
 * A fix and an addition for PCI devices for the A000 family
 
 * Dump PCI registers when an error occurs, to make it easier to debug
 
 rtlwifi
 
 * add support for 64 bit DMA, enabled with a module parameter
 
 * add module parameter to enable ASPM
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Merge tag 'wireless-drivers-next-for-davem-2017-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for 4.15

The first pull request for 4.15, unusually late this time but still
relatively small. Also includes merge from wireless-drivers to fix
conflicts in iwlwifi.

Major changes:

rsi

* add P2P mode support

* sdio suspend and resume support

iwlwifi

* A fix and an addition for PCI devices for the A000 family

* Dump PCI registers when an error occurs, to make it easier to debug

rtlwifi

* add support for 64 bit DMA, enabled with a module parameter

* add module parameter to enable ASPM
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-20 08:37:28 +01:00
Arnd Bergmann a39644b235 rsi: fix integer overflow warning
gcc produces a harmless warning about a recently introduced
signed integer overflow:

drivers/net/wireless/rsi/rsi_91x_hal.c: In function 'rsi_prepare_mgmt_desc':
include/uapi/linux/swab.h:13:15: error: integer overflow in expression [-Werror=overflow]
  (((__u16)(x) & (__u16)0x00ffU) << 8) |   \
   ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
include/uapi/linux/swab.h:104:2: note: in expansion of macro '___constant_swab16'
  ___constant_swab16(x) :   \
  ^~~~~~~~~~~~~~~~~~
include/uapi/linux/byteorder/big_endian.h:34:43: note: in expansion of macro '__swab16'
 #define __cpu_to_le16(x) ((__force __le16)__swab16((x)))
                                           ^~~~~~~~
include/linux/byteorder/generic.h:89:21: note: in expansion of macro '__cpu_to_le16'
 #define cpu_to_le16 __cpu_to_le16
                     ^~~~~~~~~~~~~
drivers/net/wireless/rsi/rsi_91x_hal.c:136:3: note: in expansion of macro 'cpu_to_le16'
   cpu_to_le16((tx_params->vap_id << RSI_DESC_VAP_ID_OFST) &
   ^~~~~~~~~~~

The problem is that the 'mask' value is a signed integer that gets
turned into a negative number when truncated to 16 bits. Making it
an unsigned constant avoids this.

Fixes: eac4eed322 ("rsi: tx and rx path enhancements for p2p mode")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-10-13 13:00:42 +03:00
Karun Eagalapati 20db073327 rsi: sdio suspend and resume support
SDIO suspend and resume handlers are implemented and verified
that device works after suspend/resume cycle.

Signed-off-by: Karun Eagalapati <karun256@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-25 11:26:30 +03:00
Pavani Muthyala 192524a499 rsi: add version information
We will dump information about firmware version, firmware file
name and operating mode during initialization.

Signed-off-by: Pavani Muthyala <pavani.muthyala@redpinesignals.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-25 11:25:23 +03:00
Allen Pais 531f3ce953 drivers: net: rsi_91x: use setup_timer() helper.
Use setup_timer function instead of initializing timer with the
    function and data fields.

Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-21 11:44:39 -07:00
Colin Ian King 6508497cbd rsi: fix a dereference on adapter before it has been null checked
The assignment of dev is dereferencing adapter before adapter has
been null checked, potentially leading to a null pointer dereference.
Fix this by simply moving the assignment of dev to a later point
after the sanity null check of adapter.

Detected by CoverityScan CID#1398383 ("Dereference before null check")

Fixes: dad0d04fa7 ("rsi: Add RS9113 wireless driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-20 15:40:16 +03:00
Prameela Rani Garnepudi af75687286 rsi: miscellaneous changes for p2p mode
Add P2P_GO condition as well when handling BEACON_ENABLE
from mac80211. Also passing 'vif' for auto rate request.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-20 15:38:58 +03:00
Prameela Rani Garnepudi c7245c0975 rsi: aggregation changes for p2p mode
P2P Go condition is added wherever AP mode is there
in aggregation path.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-20 15:38:57 +03:00
Prameela Rani Garnepudi efe877aa0f rsi: disallow power save config when AP vap running
When AP or P2P GO VAP is running, power save configuration should
be disallowed. To check interface type in power save configuration
'vif' parameters is passed.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-20 15:38:57 +03:00
Prameela Rani Garnepudi eac4eed322 rsi: tx and rx path enhancements for p2p mode
Data descriptor is updated to include vap_id. TX command frame
key config also updated to include vap_id.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-20 15:38:56 +03:00
Prameela Rani Garnepudi 4671c209ac rsi: handle peer connection and disconnection in p2p mode
Parameter 'vif' is passed to inform_bss_status function to
check the type of vif and to get vap_id.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-20 15:38:56 +03:00
Prameela Rani Garnepudi df77191191 rsi: add support for p2p listen
Remain-on-channel and cancel-remain-on-channel are implemented
to support p2p listen phase.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-20 15:38:55 +03:00
Prameela Rani Garnepudi b8bd3a439f rsi: add/remove interface enhancements for p2p
STA_OPMODE and AP_OPMODE macros are renamed to RSI_OPMODE_STA
and RSI_OPMODE_AP. New opmodes are added to this list for P2P
support. Mapping of mac80211 interface types to rsi interface
types are added.
Add and remove interface callbacks are handled for P2P mode.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-20 15:38:55 +03:00
Prameela Rani Garnepudi 421eedff11 rsi: add p2p support parameters to mac80211
This patch adds p2p supported parameters to mac80211 hw and
wiphy structures during mac80211 registration.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-20 15:38:54 +03:00
Himanshu Jha 66a3479e12 rsi: remove memset before memcpy
calling memcpy immediately after memset with the same region of memory
makes memset redundant.

Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-30 19:51:29 +03:00
Dan Carpenter 0270639e89 rsi: missing unlocks on error paths
There is a missing unlock if rsi_find_sta() fails in
rsi_mac80211_ampdu_action() or if we hit the -EINVAL path in
rsi_mac80211_sta_add().

Fixes: 3528608f3a ("rsi: handle station connection in AP mode")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-30 19:48:32 +03:00
Dan Carpenter fc43867294 rsi: update some comments
These functions don't return -1 on failure.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-30 19:48:31 +03:00
Arvind Yadav 9ea792a48c net: rsi: mac80211: constify ieee80211_ops
ieee80211_ops are not supposed to change at runtime. All functions
working with ieee80211_ops provided by <net/mac80211.h> work with
const ieee80211_ops. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-24 12:57:31 +03:00
Prameela Rani Garnepudi 38ef62353a rsi: security enhancements for AP mode
Station id should be set in load key frame configured to device.
For WEP mode, key is configured once from mac80211. This key is
saved and configured to device every time a station is connected.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-17 10:07:00 +03:00
Prameela Rani Garnepudi 32be57a666 rsi: aggregation parameters frame for AP mode
TX command frame ampdu aggregation parameters is updated to
include sta_id for AP mode.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-17 10:06:59 +03:00
Prameela Rani Garnepudi 8a1ff83f2b rsi: update tx auto rate command frame for AP mode
Auto rate frame is sent to firmware when a new station is
connected. Station id and station's ht capabilities are updated
in auto rate command frame.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-17 10:06:58 +03:00
Prameela Rani Garnepudi 6572f054e9 rsi: use common descriptor for auto rate frame
TX command frame auto rate request is modified to use common
descriptor struture.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-17 10:06:58 +03:00
Prameela Rani Garnepudi 19844c0a9a rsi: data and managemet path changes for AP mode
Station id needs to be get for data and management frames
to fill in the descruptor for AP mode. Few other changes
related to AP mode are covered here.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-17 10:06:57 +03:00
Prameela Rani Garnepudi 571b050b42 rsi: handle station disconnection in AP mode
When sta_remove of mac80211 is called, driver iterates through
list of existing stations to get the station id. Then peer notify
is prepared and send to firmare.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-17 10:06:57 +03:00
Prameela Rani Garnepudi 3528608f3a rsi: handle station connection in AP mode
Station structures are maintained in driver with required
fields. When mac80211 callback sta_add is called, driver
iterates through list of connected stations to check available
index and assigns station id which is important for further
communication to that station. Then peer notify frame is send
to firmware to inform the firmware about new station connection.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-17 10:06:56 +03:00
Prameela Rani Garnepudi d26a955940 rsi: add beacon changes for AP mode
Mac80211 config parameter BEACON_ENABLE is handled. When VAP
capabilities frame with AP mode is configured to firmware, beacon
events start coming to host at each PreTBTT. At this time, beacon
is taken from mac80211, descriptor is prepared and send to firmware.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-17 10:06:56 +03:00
Prameela Rani Garnepudi 75ca0049aa rsi: remove interface changes for AP mode
remove_interface callback of mac80211 is handled for AP mode.
Same is notified to firmware through vap_capabilities frame
with VAP status VAP_DELETE.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-17 10:06:55 +03:00
Prameela Rani Garnepudi 03c34c0d73 rsi: add interface changes for ap mode
AP mode is handled in add_interface callback of mac80211.
Also for AP mode, sending rx filter frame to disallow beacons
to host is added. Station structures are initialized to NULL.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-17 10:06:55 +03:00
Prameela Rani Garnepudi 6da1e00a53 rsi: advertise ap mode support
AP mode support is advertised to cfg80211. Necessary wiphy
parameters are initialized.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-17 10:06:54 +03:00
Karun Eagalapati 80a88ecf3b rsi: RTS threshold configuration
Provision is added for configuring RTS threshold by sending
vap dynamic update frame to firmware.

Signed-off-by: Karun Eagalapati <karun256@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-08 14:46:04 +03:00
Karun Eagalapati 67c52a4daf rsi: buffer available interrupt handling
BUFFER_AVAILABLE interrupt is sent by firmware to indicate
change in buffer status. We should check buffer status while
handling this interrupt. Currently buffer status is checked
only while dequeueing packets. This patch fixes a data
traffic stuck problem observed occasionally.

Signed-off-by: Karun Eagalapati <karun256@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-08 14:46:03 +03:00
Karun Eagalapati d64dd2a172 rsi: buffer full check optimization
We get buffer full event from firmware whenever Tx queue is full
Host should stop writing packets after this and resume after
buffer free event.
Buffer status checking is optimized for once in 4 times if
BUFF_FULL condition is not set, otherwise once for every
packet.

Signed-off-by: Karun Eagalapati <karun256@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-08 14:46:03 +03:00
Karun Eagalapati 23e414cca1 rsi: rename sdio_read_buffer_status_register
rsi_sdio_check_buffer_status would be the appropriate name
for this function as we are checking hardware buffers
availability status.

Signed-off-by: Karun Eagalapati <karun256@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-08 14:46:02 +03:00
Karun Eagalapati db07971d08 rsi: add support for U-APSD power save
This patch adds support for U-APSD power save. Configuration
frame is downloaded to firmware with default settings and
support is advertised to mac80211

Signed-off-by: Karun Eagalapati <karun256@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-08 14:46:02 +03:00
Karun Eagalapati ce86893fa8 rsi: add support for legacy power save
This patch adds support for legacy power save. Necessary
configuration frames are downloaded to firmware when power save
is enabled/disabled

Signed-off-by: Karun Eagalapati <karun256@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-08 14:46:01 +03:00
Pavani Muthyala 588349a1fe rsi: update set_antenna command frame
TX command frame set_antenna is modified to use common
descriptor structure. Also it's subframe type is set.

Signed-off-by: Pavani Muthyala <pavani.muthyala@redpinesignals.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-08 14:46:01 +03:00
Pavani Muthyala edba3532c6 rsi: add support for rf-kill functionality
This patch implements rfkill_poll handler. Also, necessary changes
are done in interface up and down handler to support rfkill
functionality.

Signed-off-by: Pavani Muthyala <pavani.muthyala@redpinesignals.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-08 14:46:00 +03:00
Prameela Rani Garnepudi 6345016d4b rsi: fix uninitialized descriptor pointer issue
This patch fixes the uninitialized descriptor pointer
issue in function rsi_send_internal_mgmt_frame().
Descriptor should point to start of the skb data.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 9a629fafe7 ("rsi: immediate wakeup bit and priority for TX command packets")
Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-08 14:45:26 +03:00
Amitkumar Karwar e6249e15fe rsi: fix static checker warning
u32 pointer is changed to u16 and filled the value. Problem is
solved by using local temporary variable. Below static checker
warning was reported.

drivers/net/wireless/rsi/rsi_91x_usb.c:400 rsi_usb_master_reg_read()
        warn: passing casted pointer 'value' to 'rsi_usb_reg_read()'
32 vs 16.

Fixes: b97e9b94ad ("rsi: Add new host interface operations")
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-07-28 17:27:19 +03:00