Commit graph

781637 commits

Author SHA1 Message Date
John Whitmore
43a420e31d staging:rtl8192u: Rename TxPendingBARecord - Style
Rename the member variable TxPendingBARecord to tx_pending_ba_record.
This change clears the checkpatch issue with CamelCase naming.

The changes are purely coding style changes and should not impact
runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:15:51 +02:00
John Whitmore
4925d4b766 staging:rtl8192u: Rename TxCurSeq - Style
Rename the member variable TxCurSeq to tx_cur_seq. This change clears
the checkpatch issue with CamelCase naming.

The changes are coding style changes which should not impact runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:15:51 +02:00
John Whitmore
c1fdc5de69 staging:rtl8192u: Rename TsCommonInfo - Style
Rename the member variable TsCommonInfo in two structures, both
tx_ts_record and RX_TS_RECORD. This member variable is used in both
structures and in both cases causes a checkpatch issue with CamelCase
naming.

The changes are purely coding style and should not impact runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:15:51 +02:00
John Whitmore
1538be2802 staging:rtl8192u: Remove typedef and rename TX_TS_RECORD - Style
Remove the typdef from structure TX_TS_RECORD and rename to tx_ts_record.
The removal of the typedef clears the checkpatch issue with creating new
types in code. The name change, whilst not specifically flagged by
checkpatch, is an issue since types are meant to be named in lowercase.

These changes are purely coding style changes and should have no impact
on runtime execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:15:51 +02:00
John Whitmore
cc29db8637 staging:rtl8192u: Rename eRFPath - Style
Rename the variable eRFPath to e_rfpath. This change resolves a
checkpatch issue with CamelCase naming. The variable name is used both
as a parameter name in function definitions, function prototypes and as
a local variable.

This change is purely a coding style change which should have no impact
on runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
14c964a2d3 staging:rtl8192u: Remove repeated definitions - Style
Remove bit field masks which are defined in two files: r819xU_phy.h
and r819xU_phyreg.h. Or in the case of bMaskByte3 defined but never used.

The definitions have been removed from the file r819xU_phy.h.

This is a coding style change, which should have no impact on runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
fb37edcfcb staging:rtl8192u: Rename RF90_RADIO_PATH_E - Style
Rename the enumerated type RF90_RADIO_PATH_E to rf90_radio_path_e.
Whilst it is not flagged as an issue by checkpatch, types are meant
to be named in lowercase.

This change is purely a coding style change which should have no
impact on runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
b714c8c0b0 staging:rtl8192u: Rename HW90_BLOCK_E - Style
Rename the enumerated type HW90_BLOCK_E to hw90_block_e. Whilst this is
not flagged by checkpatch types are meant to be in lowercase.

This is a coding style change which should have no impact on runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
a99d02401f staging:rtl8192u: Remove proxy rtl819XRadioD_Array - Style
Remove the array rtl819XRadioD_Array which is only acting as a proxy to
the real array Rtl8192UsbRadioD_Array.

This is a coding style change which should have no impact on runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
281da5305b staging:rtl8192u: Remove proxy rtl819XRadioC_Array - Style
Remove the array rtl819XRadioC_Array which is only serving as a proxy for
the real array Rtl8192UsbRadioC_Array. This is a coding style change and
should have no impact on runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
416599d096 staging:rtl8192u: Remove proxy rtl819XRadioB_Array - Style
Remove the array rtl819XRadioB_Array Rtl8192UsbRadioB_Array which acts
as a proxy the actual array Rtl8192UsbRadioB_Array. The only purpose, I
can see for this implementation is to obscure the actual array being
used Rtl8192UsbRadioB_Array.

This is a coding style change which should have no impact on runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
be208c7695 staging:rtl8192u: Remove proxy rtl819XRadioA_Array - Style
The array rtl819XRadioA_Array serves as a proxy array for the actual
array Rtl8192UsbRadioA_Array. This implementation seems to serve no
other purpose then to obscure the actually array Rtl8192UsbRadioA_Array.

This is a coding style change which should have no impact on runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
def6b79f3f staging:rtl8192u: Remove proxy array rtl819XAGCTAB_Array - Style
Remove the array rtl819XAGCTAB_Array which is only a proxy to the
array Rtl8192UsbAGCTAB_Array. There appears to be no purpose
served by this implementation, other then to obscure the
Rtl8192UsbAGCTAB_Array structure, which is actually written to and
read from.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
22be361aa9 staging:rtl8192u: Remove proxy struct rtl819XPHY_REG_1T2RArray - Style
Remove the struct rtl819XPHY_REG_1T2RArray which is simply a proxy for
the struct Rtl8192UsbPHY_REG_1T2RArray. There appears to be no purpose
served by this implementation, other then to obscure the
Rtl8192UsbPHY_REG_1T2RArray structure.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
4531f1934b staging:rtl8192u: Remove proxy struct rtl819XMACPHY_Array_PG - Style
Remove the struct rtl819XMACPHY_Array_PG which is simply a proxy for
the struct Rtl8192UsbMACPHY_Array_PG. There appears to be no purpose
served by this implementation, other then to obscure the
Rtl8192UsbMACPHY_Array_PG structure.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
e918443caf staging:rtl8192u: Rename msDelay to ms_delay - Style
Rename the member variable msDelay to ms_delay. This change clears the
checkpatch issue with CamelCase naming. The change is purely a coding
style change which should not impact runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
21807031af staging:rtl8192u: Rename Para2 to para_2 - style
Rename member variable Para2 to para_2. This change clears the checkpatch
issue with CamelCase naming. The change is purely a coding style change
and should have no impact on runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
33f28ab7a0 staging:rtl8192u: Rename Para1 > para_1 - Style
Rename the member variable Para1 to para_1. This change clears the
checkpatch issue with CamelCase naming. The change is purely a coding
style change and should have no impact on runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:26 +02:00
John Whitmore
d2a5c987e7 staging:rtl8192u: Rename CmdID - Style
Rename the member variable CmdId to cmd_id. This change clears the
checkpatch issue with CamelCase naming. The change is purely a coding
style change which should have no impact on runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:25 +02:00
John Whitmore
a1b34e427c staging:rtl8192u: Rename SwChnlCmd - Style
Rename the structure SwChnlCmd to sw_chnl_cmd. This change clears the
checkpatch issue with CamelCase naming. The change is purely a coding
style change and should have no impact on runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:13:25 +02:00
John Whitmore
6b59fd408d staging:rtl8192u: Remove multiple blank lines - Style
Remove multiple blank lines, raise a checkpatch issue. This is purely
a coding style change which should not impact runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:11:46 +02:00
John Whitmore
4434e159d0 staging:rtl8192u: Rename ISR_BcnTimerIntr - Style
Rename the bit definition ISR_BcnTimerIntr to ISR_BCN_TIMER_INTR. This
change clears the checkpatch issue with CamelCase naming. The change is
purely a style change and should not impact runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:11:46 +02:00
John Whitmore
85dc31eb8c staging:rtl8192u: Rename ISR_TxBcnErr bit definition - Style
Rename the bit definition ISR_TxBcnErr to ISR_TX_BCN_ERR. This change
clears the checkpatch issue with CamelCase naming. The change is purely
a coding style change which should not impact runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:11:46 +02:00
John Whitmore
66b19887fb staging:rtl8192u: Rename bit definition ISR_TxBcnOk - Style
Rename the bit definition ISR_TxBcnOk to ISR_TX_BCN_OK. This change
clears the checkpatch issue with CamelCase naming. The change is a
coding style change which should not impact runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:11:44 +02:00
Michael Straube
12f3ccfbc5 staging: rtl8188eu: remove unused rtw_get_oper_choffset()
The function rtw_get_oper_choffset() is never used, so remove it.
Discovered by cppcheck.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:08:03 +02:00
Michael Straube
c60b03effc staging: rtl8188eu: remove unused rtw_get_oper_bw()
The function rtw_get_oper_bw() is never used, so remove it.
Discovered by cppcheck.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:08:03 +02:00
Michael Straube
b045b42915 staging: rtl8188eu: remove unused CAM_empty_entry()
The function CAM_empty_entry() is never used, so remove it.
Discovered by cppcheck.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:08:03 +02:00
Michael Straube
891f6de39c staging: rtl8188eu: remove unused ODM_RASupport_Init()
The function ODM_RASupport_Init() is never used, so remove it.
Discovered by cppcheck.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:08:03 +02:00
Tim Collier
d47b10e6f9 staging: wlan-ng: correction to comment in hfa384x_usb
The comment for hfa384x_docmd incorrectly states that usercb_data
should be NULL for DOASYNC calls; in fact, it should be NULL for
DOWAIT calls (this is consistent with the other similar functions and
the rest of the comment text).

Signed-off-by: Tim Collier <osdevtc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:08:02 +02:00
Tim Collier
318c66d456 staging: wlan-ng: remove volatile from reapable field in hfa384x_usbctlx
Fix checkpatch.pl warning:

"Use of volatile is usually wrong: see
Documentation/process/volatile-considered-harmful.rs"

reapable is not used to access h/w directly, so volatile is not
necessary.

>From reading the code, the contexts in which the field may be
updated/accessed across threads are protected by the hw->ctlxq.lock
spinlock, where hw is the device struct, so appears thread-safe.

Signed-off-by: Tim Collier <osdevtc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:08:02 +02:00
Michael Straube
d3094361a9 staging: rtl8188eu: remove unused sreset_get_wifi_status()
The function sreset_get_wifi_status() is never used, so remove it.
Discovered by cppcheck.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:08:02 +02:00
Nishad Kamdar
910ca496b8 staging: mt7621-mmc: Use BIT macro instead of explicit shifting in board.h
Replace explicit shifting with BIT macro in board.h.
Issue found by checkpatch.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:08:02 +02:00
Kees Cook
2f675c91ee staging: rtl8192u: ieee80211: Convert from ahash to shash
This is an identical change to the wireless/lib80211 of the same name.
In preparing to remove all stack VLA usage from the kernel[1], this
removes the discouraged use of AHASH_REQUEST_ON_STACK in favor of
the smaller SHASH_DESC_ON_STACK by converting from ahash-wrapped-shash
to direct shash. By removing a layer of indirection this both improves
performance and reduces stack usage. The stack allocation will be made
a fixed size in a later patch to the crypto subsystem.

[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:05:24 +02:00
Kees Cook
bd757b5d2e staging: rtl8192e: ieee80211: Convert from ahash to shash
This is an identical change to the wireless/lib80211 of the same name.
In preparing to remove all stack VLA usage from the kernel[1], this
removes the discouraged use of AHASH_REQUEST_ON_STACK in favor of
the smaller SHASH_DESC_ON_STACK by converting from ahash-wrapped-shash
to direct shash. By removing a layer of indirection this both improves
performance and reduces stack usage. The stack allocation will be made
a fixed size in a later patch to the crypto subsystem.

[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 10:05:23 +02:00
Tomas Novotny
1ebc787ae5 iio: vcnl4000: make the driver extendable
There are similar chips in the vcnl4xxx family. The initialization and
communication is a bit different for members of the family, so this
patch makes the driver extendable for different chips.

There is no functional change.

Signed-off-by: Tomas Novotny <tomas@novotny.cz>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-07-29 08:58:33 +01:00
Takashi Iwai
f69548ffaf ALSA: hda/hdmi: Use single mutex unlock in error paths
Instead of calling mutex_unlock() at each error path multiple times,
take the standard goto-and-a-single-unlock approach.  This will
simplify the code and make easier to find the unbalanced mutex locks.

No functional changes, but only the code readability improvement as a
preliminary work for further changes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-07-29 09:28:12 +02:00
Stephen Hemminger
7ceb1c3753 Drivers: hv: vmbus: add numa_node to sysfs
Being able to find the numa_node for a device is useful for userspace
drivers (DPDK) and also for diagnosing performance issues.  This makes
vmbus similar to pci.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 08:09:56 +02:00
Sunil Muthuswamy
9d9c965687 Drivers: hv: vmbus: Get rid of MSR access from vmbus_drv.c
Get rid of ISA specific code from vmus_drv.c which is common code.

Fixes: 81b18bce48 ("Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic")

Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 08:09:56 +02:00
Sunil Muthuswamy
8afc06dd75 Drivers: hv: vmbus: Fix the issue with freeing up hv_ctl_table_hdr
The check to free the Hyper-V control table header was reversed. This
fixes it.

Fixes: 81b18bce48 ("Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic")

Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 08:09:56 +02:00
Sunil Muthuswamy
ddcaf3ca4c Drivers: hv: vmus: Fix the check for return value from kmsg get dump buffer
The code to support panic control message was checking the return was
checking the return value from kmsg_dump_get_buffer as error value, which
is not what the routine returns. This fixes it.

Fixes: 81b18bce48 ("Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic")

Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 08:09:56 +02:00
Dmitriy Cherkasov
bb8a14a3d8 staging: gasket: use NULL instead of 0 for null pointer
Fixes sparse warning: Using plain integer as NULL pointer

Signed-off-by: Dmitriy Cherkasov <dmitriy@oss-tech.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 08:05:45 +02:00
Todd Poynor
5b6e80cc98 staging: gasket: core: hold reference on device while in use
Hold a reference on the struct device while a pointer to that
device is in use by gasket.

Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 08:05:45 +02:00
Gao Xiang
6caa584136 staging: erofs: fix conditional uninitialized `pcn' in z_erofs_map_blocks_iter
This patch adds error handling code for
z_erofs_map_blocks_iter to fix the compiler blame.

Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 08:05:02 +02:00
Gao Xiang
47e541a17e staging: erofs: fix compile error without built-in decompression support
This patch fixes incorrect code snippets due to spilt code
into small patches by mistake.

Link: https://lists.01.org/pipermail/kbuild-all/2018-July/050747.html
Link: https://lists.01.org/pipermail/kbuild-all/2018-July/050750.html
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-29 08:05:02 +02:00
David S. Miller
d339377c04 Merge branch 'tls-Fix-improper-revert-in-zerocopy_from_iter'
Doron Roberts-Kedes says:

====================
tls: Fix improper revert in zerocopy_from_iter

This series fixes the improper iov_iter_revert introcded in
"tls: Fix zerocopy_from_iter iov handling".
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:53:31 -07:00
Doron Roberts-Kedes
2da19ed3e4 tls: Fix improper revert in zerocopy_from_iter
The current code is problematic because the iov_iter is reverted and
never advanced in the non-error case. This patch skips the revert in the
non-error case. This patch also fixes the amount by which the iov_iter
is reverted. Currently, iov_iter is reverted by size, which can be
greater than the amount by which the iter was actually advanced.
Instead, only revert by the amount that the iter was advanced.

Fixes: 4718799817 ("tls: Fix zerocopy_from_iter iov handling")
Signed-off-by: Doron Roberts-Kedes <doronrk@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:53:31 -07:00
Doron Roberts-Kedes
5a3611efe5 tls: Remove dead code in tls_sw_sendmsg
tls_push_record either returns 0 on success or a negative value on failure.
This patch removes code that would only be executed if tls_push_record
were to return a positive value.

Signed-off-by: Doron Roberts-Kedes <doronrk@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:53:31 -07:00
Neal Cardwell
383d470936 tcp_bbr: fix bw probing to raise in-flight data for very small BDPs
For some very small BDPs (with just a few packets) there was a
quantization effect where the target number of packets in flight
during the super-unity-gain (1.25x) phase of gain cycling was
implicitly truncated to a number of packets no larger than the normal
unity-gain (1.0x) phase of gain cycling. This meant that in multi-flow
scenarios some flows could get stuck with a lower bandwidth, because
they did not push enough packets inflight to discover that there was
more bandwidth available. This was really only an issue in multi-flow
LAN scenarios, where RTTs and BDPs are low enough for this to be an
issue.

This fix ensures that gain cycling can raise inflight for small BDPs
by ensuring that in PROBE_BW mode target inflight values with a
super-unity gain are always greater than inflight values with a gain
<= 1. Importantly, this applies whether the inflight value is
calculated for use as a cwnd value, or as a target inflight value for
the end of the super-unity phase in bbr_is_next_cycle_phase() (both
need to be bigger to ensure we can probe with more packets in flight
reliably).

This is a candidate fix for stable releases.

Fixes: 0f8782ea14 ("tcp_bbr: add BBR congestion control")
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Priyaranjan Jha <priyarjha@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:46:07 -07:00
David S. Miller
6d27c6dd10 Merge branch 'net-socket-Fix-potential-spectre-v1-gadgets'
Jeremy Cline says:

====================
net: socket: Fix potential spectre v1 gadgets

This fixes a pair of potential spectre v1 gadgets.

Note that because the speculation window is large, the policy is to stop
the speculative out-of-bounds load and not worry if the attack can be
completed with a dependent load or store[0].

[0] https://marc.info/?l=linux-kernel&m=152449131114778
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:43:31 -07:00
Jeremy Cline
e978de7a6d net: socket: Fix potential spectre v1 gadget in sock_is_registered
'family' can be a user-controlled value, so sanitize it after the bounds
check to avoid speculative out-of-bounds access.

Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jeremy Cline <jcline@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-28 22:43:30 -07:00