openwrt/staging/blogic.git
7 years agoBluetooth: btusb: add ID for LiteOn 04ca:3016
Brian Norris [Tue, 1 Aug 2017 00:59:39 +0000 (17:59 -0700)]
Bluetooth: btusb: add ID for LiteOn 04ca:3016

Contains a QCA6174A-5 chipset, with USB BT. Let's support loading
firmware on it.

From usb-devices:
T:  Bus=02 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#=  3 Spd=12  MxCh= 0
D:  Ver= 2.01 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=04ca ProdID=3016 Rev=00.01
C:  #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I:  If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb

Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
7 years agoBluetooth: hci_uart: Fix uninitialized alignment value
Loic Poulain [Sat, 29 Jul 2017 17:32:31 +0000 (19:32 +0200)]
Bluetooth: hci_uart: Fix uninitialized alignment value

Force alignment value to the default one (1 byte) if uninitialized.
This fixes hci_ll serdev driver (alignment = 0) and avoid any further
issues with upcoming drivers.

Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
7 years agoBluetooth: btrtl: Fix a error code in rtl_load_config()
Dan Carpenter [Fri, 28 Jul 2017 14:41:11 +0000 (17:41 +0300)]
Bluetooth: btrtl: Fix a error code in rtl_load_config()

We accidentally return success if the kmemdup() fails.  It results in
a NULL dereference in the caller.

Fixes: 1110a2dbe698 ("Bluetooth: btrtl: Add RTL8822BE Bluetooth device")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
7 years agomrf24j40: Fix en error handling path in 'mrf24j40_probe()'
Christophe JAILLET [Sat, 8 Jul 2017 08:40:13 +0000 (10:40 +0200)]
mrf24j40: Fix en error handling path in 'mrf24j40_probe()'

If this check fails, we must release some resources as done everywhere
else in this function before returning an error code.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Alan Ott <alan@signal11.us>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: hci_nokia: select BT_BCM for btbcm_set_bdaddr()
Marcel Holtmann [Sat, 22 Jul 2017 09:57:47 +0000 (11:57 +0200)]
Bluetooth: hci_nokia: select BT_BCM for btbcm_set_bdaddr()

The Nokia devices require the setup of its Public Bluetooth Device
Address and for that it is required to depend on vendor specific
commands. For Broadcom based Nokia devices, that is part of btbcm
module and can be selected via BT_BCM config option.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
7 years agoBluetooth: btusb: Fix memory leak in play_deferred
Jeffy Chen [Thu, 20 Jul 2017 10:53:50 +0000 (18:53 +0800)]
Bluetooth: btusb: Fix memory leak in play_deferred

Currently we are calling usb_submit_urb directly to submit deferred tx
urbs after unanchor them.

So the usb_giveback_urb_bh would failed to unref it in usb_unanchor_urb
and cause memory leak:
unreferenced object 0xffffffc0ce0fa400 (size 256):
...
  backtrace:
    [<ffffffc00034a9a8>] __save_stack_trace+0x48/0x6c
    [<ffffffc00034b088>] create_object+0x138/0x254
    [<ffffffc0009d5504>] kmemleak_alloc+0x58/0x8c
    [<ffffffc000345f78>] __kmalloc+0x1d4/0x2a0
    [<ffffffc0006765bc>] usb_alloc_urb+0x30/0x60
    [<ffffffbffc128598>] alloc_ctrl_urb+0x38/0x120 [btusb]
    [<ffffffbffc129e7c>] btusb_send_frame+0x64/0xf8 [btusb]

Put those urbs in tx_anchor to avoid the leak, and also fix the error
handling.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: Style fix - align block comments
Derek Robson [Sat, 22 Jul 2017 01:47:07 +0000 (13:47 +1200)]
Bluetooth: Style fix - align block comments

Fixed alignment of all block comments.
Found using checkpatch

Signed-off-by: Derek Robson <robsonde@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: btwilink: remove unnecessary static in bt_ti_probe()
Gustavo A. R. Silva [Wed, 19 Jul 2017 22:49:31 +0000 (17:49 -0500)]
Bluetooth: btwilink: remove unnecessary static in bt_ti_probe()

Remove unnecessary static on local variable hst.
Such variable is initialized before being used,
on every execution path throughout the function.
The static has no benefit and, removing it reduces
the object file size.

This issue was detected using Coccinelle and the
following semantic patch:

@bad exists@
position p;
identifier x;
type T;
@@

static T x@p;
...
x = <+...x...+>

@@
identifier x;
expression e;
type T;
position p != bad.p;
@@

-static
 T x@p;
 ... when != x
     when strict
?x = e;

In the following log you can see the difference in the object file size.
This log is the output of the size command, before and after the code
change:

before:
   text    data     bss     dec     hex filename
   4029    2528     128    6685    1a1d drivers/bluetooth/btwilink.o

after:
   text    data     bss     dec     hex filename
   4007    2472      64    6543    198f drivers/bluetooth/btwilink.o

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: hci_ll: Use new hci_uart_unregister_device() function
Ian Molton [Sat, 8 Jul 2017 16:37:43 +0000 (17:37 +0100)]
Bluetooth: hci_ll: Use new hci_uart_unregister_device() function

Convert hci_ll to use hci_uart_unregister_device().

This simplifies the _remove() handler as well as fixes a
potential race condition on unload.

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabor.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: hci_nokia: Use new hci_uart_unregister_device() function
Ian Molton [Sat, 8 Jul 2017 16:37:42 +0000 (17:37 +0100)]
Bluetooth: hci_nokia: Use new hci_uart_unregister_device() function

Simplify _remove() path for hci_nokia.c

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabor.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: hci_serdev: Introduce hci_uart_unregister_device()
Ian Molton [Sat, 8 Jul 2017 16:37:41 +0000 (17:37 +0100)]
Bluetooth: hci_serdev: Introduce hci_uart_unregister_device()

Several drivers have the same (and incorrect) code in their
_remove() handler.

Coalesce this into a shared function.

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: btusb: fix QCA Rome suspend/resume
Leif Liddy [Sat, 8 Jul 2017 18:55:32 +0000 (20:55 +0200)]
Bluetooth: btusb: fix QCA Rome suspend/resume

There's been numerous reported instances where BTUSB_QCA_ROME
bluetooth controllers stop functioning upon resume from suspend. These
devices seem to be losing power during suspend. Patch will detect a status
change on resume and perform a reset.

Signed-off-by: Leif Liddy <leif.linux@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: hci_nokia: remove duplicate call to pm_runtime_disable()
Ian Molton [Sat, 8 Jul 2017 13:43:35 +0000 (14:43 +0100)]
Bluetooth: hci_nokia: remove duplicate call to pm_runtime_disable()

pm_runtime_disable() is called in the _close() handler.

Since we call the _close() handler on remove, there is no need to
call pm_runtime_disable() a second time.

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: hci_nokia: prevent crash on module removal
Ian Molton [Sat, 8 Jul 2017 13:43:34 +0000 (14:43 +0100)]
Bluetooth: hci_nokia: prevent crash on module removal

Only cancel any ongoing work after making sure, that no new work
can be scheduled. This fixes a race condition in the remove handler.

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: btqca: Fixed a coding style error
Joan Jani [Thu, 6 Jul 2017 20:35:32 +0000 (20:35 +0000)]
Bluetooth: btqca: Fixed a coding style error

Fixed this coding style erro

./drivers/bluetooth/btqca.c:84: ERROR: code indent should use tabs where possible

Signed-off-by: Joan Jani <igiann@hotmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: btusb: Add support of all Foxconn (105b) Broadcom devices
Dmitry Tunin [Thu, 6 Jul 2017 11:41:13 +0000 (14:41 +0300)]
Bluetooth: btusb: Add support of all Foxconn (105b) Broadcom devices

There is another device

T:  Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#=  3 Spd=12  MxCh= 0
D:  Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=105b ProdID=e066 Rev=01.12
S:  Manufacturer=Broadcom Corp
S:  Product=BCM20702A0
S:  SerialNumber=342387DAE35E
C:  #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none)
I:  If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none)
I:  If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
I:  If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none)

Since we have Cls=ff, we can add all of them.

Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agoBluetooth: hci_bcm: Make bcm_request_irq fail if no IRQ resource
Loic Poulain [Tue, 4 Jul 2017 10:57:56 +0000 (12:57 +0200)]
Bluetooth: hci_bcm: Make bcm_request_irq fail if no IRQ resource

In case of no IRQ resource associated to the bcm_device, requesting
IRQ should return an error in order to not enable low power mgmt.

Signed-off-by: Loic Poulain <loic.poulain@gmail.com>
Reported-by: Ian Molton <ian@mnementh.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
7 years agocxgb4: Update register ranges of T4/T5/T6 adapters
Arjun Vynipadath [Wed, 19 Jul 2017 07:39:18 +0000 (13:09 +0530)]
cxgb4: Update register ranges of T4/T5/T6 adapters

Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'netvsc-lockdep-and-related-fixes'
David S. Miller [Thu, 20 Jul 2017 05:20:05 +0000 (22:20 -0700)]
Merge branch 'netvsc-lockdep-and-related-fixes'

Stephen Hemminger says:

====================
netvsc: lockdep and related fixes

These fix sparse and lockdep warnings from netvsc driver.
Targeting these at net-next since no actual related failures
have been observed in non-debug kernels.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetvsc: add rtnl annotations in rndis
stephen hemminger [Wed, 19 Jul 2017 18:53:19 +0000 (11:53 -0700)]
netvsc: add rtnl annotations in rndis

The rndis functions are used when changing device state.
Therefore the references from network device to internal state
are protected by RTNL mutex.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetvsc: save pointer to parent netvsc_device in channel table
stephen hemminger [Wed, 19 Jul 2017 18:53:18 +0000 (11:53 -0700)]
netvsc: save pointer to parent netvsc_device in channel table

Keep back pointer in the per-channel data structure to
avoid any possible RCU related issues when napi poll is
called but netvsc_device is in RCU limbo.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetvsc: need rcu_derefence when accessing internal device info
stephen hemminger [Wed, 19 Jul 2017 18:53:17 +0000 (11:53 -0700)]
netvsc: need rcu_derefence when accessing internal device info

The netvsc_device structure should be accessed by rcu_dereference
in the send path.  Change arguments to netvsc_send() to make
this easier to do correctly.

Remove no longer needed hv_device_to_netvsc_device.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetvsc: use ERR_PTR to avoid dereference issues
stephen hemminger [Wed, 19 Jul 2017 18:53:16 +0000 (11:53 -0700)]
netvsc: use ERR_PTR to avoid dereference issues

The rndis_filter_device_add function is called both in
probe context and RTNL context,and creates the netvsc_device
inner structure. It is easier to get the RTNL lock annotation
correct if it returns the object directly, rather than implicitly
by updating network device private data.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetvsc: change logic for change mtu and set_queues
stephen hemminger [Wed, 19 Jul 2017 18:53:15 +0000 (11:53 -0700)]
netvsc: change logic for change mtu and set_queues

Use device detach/attach to ensure that no packets are handed
to device during state changes. Call rndis_filter_open/close
directly as part of later VF related changes.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetvsc: change order of steps in setting queues
stephen hemminger [Wed, 19 Jul 2017 18:53:14 +0000 (11:53 -0700)]
netvsc: change order of steps in setting queues

This fixes the error unwind logic for incorrect number of queues.
If netif_set_real_num_XX_queues failed then rndis_filter_device_add
would have been called twice. Since input arguments are already
ranged checked this is a hypothetical only problem, not possible
in actual code.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetvsc: add some rtnl_dereference annotations
stephen hemminger [Wed, 19 Jul 2017 18:53:13 +0000 (11:53 -0700)]
netvsc: add some rtnl_dereference annotations

In a couple places RTNL is held, and the netvsc_device pointer
is acquired without annotation.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetvsc: force link update after MTU change
stephen hemminger [Wed, 19 Jul 2017 18:53:12 +0000 (11:53 -0700)]
netvsc: force link update after MTU change

If two MTU changes are in less than update interval (2 seconds),
then the netvsc network device may get stuck with no carrier.

The netvsc driver debounces link status events which is fine
for unsolicited updates, but blocks getting the update after
down/up from MTU reinitialization.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'dev_close-void'
David S. Miller [Wed, 19 Jul 2017 23:45:16 +0000 (16:45 -0700)]
Merge branch 'dev_close-void'

Stephen Hemminger says:

====================
net: make dev_close void

Noticed while working on other changes. Why is dev_close()
returning int, it should be void.  Should also change
ndo_close to be void, but that requires more work and someone
with more coccinelle foo (smpl) than me.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: make dev_close and related functions void
stephen hemminger [Tue, 18 Jul 2017 22:59:27 +0000 (15:59 -0700)]
net: make dev_close and related functions void

There is no useful return value from dev_close. All paths return 0.
Change dev_close and helper functions to void.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agohns: remove useless void cast
stephen hemminger [Tue, 18 Jul 2017 22:59:26 +0000 (15:59 -0700)]
hns: remove useless void cast

There is no need to cast away return value of dev_close.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobluetooth: 6lowpan dev_close never returns error
stephen hemminger [Tue, 18 Jul 2017 22:59:25 +0000 (15:59 -0700)]
bluetooth: 6lowpan dev_close never returns error

The function dev_close in current kernel will never return an
error. Later changes will make it void.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoliquidio: lio_main: remove unnecessary static in setup_io_queues()
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:53:48 +0000 (15:53 -0500)]
liquidio: lio_main: remove unnecessary static in setup_io_queues()

Remove unnecessary static on local variables cpu_id_modulus and cpu_id.
Such variables are initialized before being used, on every execution
path throughout the function. The static has no benefit and, removing
it reduces the object file size.

This issue was detected using Coccinelle and the following semantic patch:

@bad exists@
position p;
identifier x;
type T;
@@

static T x@p;
...
x = <+...x...+>

@@
identifier x;
expression e;
type T;
position p != bad.p;
@@

-static
 T x@p;
 ... when != x
     when strict
?x = e;

In the following log you can see a significant difference in the object
file size. Also, there is a significant difference in the bss segment.
This log is the output of the size command, before and after the code
change:

before:
   text    data     bss     dec     hex filename
  78689   15272   27808  121769   1dba9 drivers/net/ethernet/cavium/liquidio/lio_main.o

after:
   text    data     bss     dec     hex filename
  78667   15128   27680  121475   1da83 drivers/net/ethernet/cavium/liquidio/lio_main.o

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoliquidio: lio_vf_main: remove unnecessary static in setup_io_queues()
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:50:15 +0000 (15:50 -0500)]
liquidio: lio_vf_main: remove unnecessary static in setup_io_queues()

Remove unnecessary static on local variables cpu_id_modulus and cpu_id.
Such variables are initialized before being used, on every execution
path throughout the function. The static has no benefit and, removing
it reduces the object file size.

This issue was detected using Coccinelle and the following semantic patch:

@bad exists@
position p;
identifier x;
type T;
@@

static T x@p;
...
x = <+...x...+>

@@
identifier x;
expression e;
type T;
position p != bad.p;
@@

-static
 T x@p;
 ... when != x
     when strict
?x = e;

In the following log you can see a significant difference in the object
file size. Also, there is a significant difference in the bss segment.
This log is the output of the size command, before and after the code
change:

before:
   text    data     bss     dec     hex filename
  55656   10680     576   66912   10560 drivers/net/ethernet/cavium/liquidio/lio_vf_main.o

after:
   text    data     bss     dec     hex filename
  55796   10536     448   66780   104dc drivers/net/ethernet/cavium/liquidio/lio_vf_main.o

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: ethernet: mediatek: remove useless code in mtk_poll_tx()
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:48:06 +0000 (15:48 -0500)]
net: ethernet: mediatek: remove useless code in mtk_poll_tx()

Remove useless local variable _condition_ and the code related.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqlcnic: remove unnecessary static in qlcnic_dump_fw()
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:45:29 +0000 (15:45 -0500)]
qlcnic: remove unnecessary static in qlcnic_dump_fw()

Remove unnecessary static on local variable fw_dump_ops.
Such variable is initialized before being used, on every
execution path throughout the function. The static has no
benefit and, removing it reduces the object file size.

This issue was detected using Coccinelle and the following semantic patch:

@bad exists@
position p;
identifier x;
type T;
@@

static T x@p;
...
x = <+...x...+>

@@
identifier x;
expression e;
type T;
position p != bad.p;
@@

-static
 T x@p;
 ... when != x
     when strict
?x = e;

In the following log you can see a difference in the object file size.
This log is the output of the size command, before and after the code
change:

before:
   text    data     bss     dec     hex filename
  19032    2136      64   21232    52f0 drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.o

after:
   text    data     bss     dec     hex filename
  19020    2048       0   21068    524c drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.o

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: tulip: remove useless code in tulip_init_one()
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:43:33 +0000 (15:43 -0500)]
net: tulip: remove useless code in tulip_init_one()

Remove useless local variable multiport_cnt and the code related.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agortlwifi: remove useless code
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:41:06 +0000 (15:41 -0500)]
rtlwifi: remove useless code

Remove useless local variables last_read_point and last_txw_point and
the code related.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agowireless: airo: remove unnecessary static in writerids()
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:37:11 +0000 (15:37 -0500)]
wireless: airo: remove unnecessary static in writerids()

Remove unnecessary static on local function pointer _writer_.
Such pointer is initialized before being used, on every
execution path throughout the function. The static has no
benefit and, removing it reduces the object file size.

This issue was detected using Coccinelle and the following semantic patch:

@bad exists@
position p;
identifier x;
type T;
@@

static T x@p;
...
x = <+...x...+>

@@
identifier x;
expression e;
type T;
position p != bad.p;
@@

-static
 T x@p;
 ... when != x
     when strict
?x = e;

In the following log you can see a significant difference in the object
file size. This log is the output of the size command, before and after
the code change:

before:
   text    data     bss     dec     hex filename
 113797   19152    1216  134165   20c15 drivers/net/wireless/cisco/airo.o

after:
   text    data     bss     dec     hex filename
 113881   19096    1152  134129   20bf1 drivers/net/wireless/cisco/airo.o

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: unexport dsa_is_port_initialized
Vivien Didelot [Tue, 18 Jul 2017 20:23:56 +0000 (16:23 -0400)]
net: dsa: unexport dsa_is_port_initialized

The dsa_is_port_initialized helper is only used by dsa_switch_resume and
dsa_switch_suspend, if CONFIG_PM_SLEEP is enabled. Make it static to
dsa.c.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet/packet: remove unused PGV_FROM_VMALLOC definition.
Rosen, Rami [Tue, 18 Jul 2017 19:23:30 +0000 (22:23 +0300)]
net/packet: remove unused PGV_FROM_VMALLOC definition.

This patch removes the definition of PGV_FROM_VMALLOC from af_packet.c.
The PGV_FROM_VMALLOC definition was already removed by
commit 441c793a5650 ("net: cleanup unused macros in net directory"),
and its usage was removed even before by commit c56b4d90123b
("af_packet: remove pgv.flags"); but it was added back by mistake later on,
in commit f6fb8f100b80 ("af-packet: TPACKET_V3 flexible buffer implementation").

Signed-off-by: Rami Rosen <rami.rosen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoISDN: eicon: switch to use native bitmaps
Andy Shevchenko [Tue, 18 Jul 2017 15:49:26 +0000 (18:49 +0300)]
ISDN: eicon: switch to use native bitmaps

Two arrays are clearly bit maps, so, make that explicit by converting to
bitmap API and remove custom helpers.

Note sig_ind() uses out of boundary bit to (looks like) protect against
potential bitmap_empty() checks for the same bitmap.

This patch removes that since:
1) that didn't guarantee atomicity anyway;
2) the first operation inside the for-loop is set bit in the bitmap
   (which effectively makes it non-empty);
3) group_optimization() doesn't utilize possible emptiness of the bitmap
   in question.

Thus, if there is a protection needed it should be implemented properly.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosfc: Add ethtool -m support for QSFP modules
Martin Habets [Tue, 18 Jul 2017 15:43:19 +0000 (16:43 +0100)]
sfc: Add ethtool -m support for QSFP modules

This also adds support for non-QSFP modules attached to QSFP.

Signed-off-by: Martin Habets <mhabets@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agotcp: adjust tail loss probe timeout
Yuchung Cheng [Wed, 19 Jul 2017 22:41:26 +0000 (15:41 -0700)]
tcp: adjust tail loss probe timeout

This patch adjusts the timeout formula to schedule the TCP loss probe
(TLP). The previous formula uses 2*SRTT or 1.5*RTT + DelayACKMax if
only one packet is in flight. It keeps a lower bound of 10 msec which
is too large for short RTT connections (e.g. within a data-center).
The new formula = 2*RTT + (inflight == 1 ? 200ms : 2ticks) which
performs better for short and fast connections.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoopenvswitch: Optimize operations for OvS flow_stats.
Tonghao Zhang [Tue, 18 Jul 2017 06:28:06 +0000 (23:28 -0700)]
openvswitch: Optimize operations for OvS flow_stats.

When calling the flow_free() to free the flow, we call many times
(cpu_possible_mask, eg. 128 as default) cpumask_next(). That will
take up our CPU usage if we call the flow_free() frequently.
When we put all packets to userspace via upcall, and OvS will send
them back via netlink to ovs_packet_cmd_execute(will call flow_free).

The test topo is shown as below. VM01 sends TCP packets to VM02,
and OvS forward packtets. When testing, we use perf to report the
system performance.

VM01 --- OvS-VM --- VM02

Without this patch, perf-top show as below: The flow_free() is
3.02% CPU usage.

4.23%  [kernel]            [k] _raw_spin_unlock_irqrestore
3.62%  [kernel]            [k] __do_softirq
3.16%  [kernel]            [k] __memcpy
3.02%  [kernel]            [k] flow_free
2.42%  libc-2.17.so        [.] __memcpy_ssse3_back
2.18%  [kernel]            [k] copy_user_generic_unrolled
2.17%  [kernel]            [k] find_next_bit

When applied this patch, perf-top show as below: Not shown on
the list anymore.

4.11%  [kernel]            [k] _raw_spin_unlock_irqrestore
3.79%  [kernel]            [k] __do_softirq
3.46%  [kernel]            [k] __memcpy
2.73%  libc-2.17.so        [.] __memcpy_ssse3_back
2.25%  [kernel]            [k] copy_user_generic_unrolled
1.89%  libc-2.17.so        [.] _int_malloc
1.53%  ovs-vswitchd        [.] xlate_actions

With this patch, the TCP throughput(we dont use Megaflow Cache
+ Microflow Cache) between VMs is 1.18Gbs/sec up to 1.30Gbs/sec
(maybe ~10% performance imporve).

This patch adds cpumask struct, the cpu_used_mask stores the cpu_id
that the flow used. And we only check the flow_stats on the cpu we
used, and it is unncessary to check all possible cpu when getting,
cleaning, and updating the flow_stats. Adding the cpu_used_mask to
sw_flow struct does’t increase the cacheline number.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoopenvswitch: Optimize updating for OvS flow_stats.
Tonghao Zhang [Tue, 18 Jul 2017 06:28:05 +0000 (23:28 -0700)]
openvswitch: Optimize updating for OvS flow_stats.

In the ovs_flow_stats_update(), we only use the node
var to alloc flow_stats struct. But this is not a
common case, it is unnecessary to call the numa_node_id()
everytime. This patch is not a bugfix, but there maybe
a small increase.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'liquidio-lowmem-fixes'
David S. Miller [Wed, 19 Jul 2017 20:24:47 +0000 (13:24 -0700)]
Merge branch 'liquidio-lowmem-fixes'

Rick Farrington says:

====================
liquidio: avoid vm low memory crashes

This patchset addresses issues brought about by low memory conditions
in a VM.  These conditions were not seen when the driver was exercised
normally.  Rather, they were brought about through manual fault injection.
They are being included in the interest of hardening the driver against
unforeseen circumstances.

1. Fix GPF in octeon_init_droq(); zero the allocated block 'recv_buf_list'.
   This prevents a GPF trying to access an invalid 'recv_buf_list[i]' entry
   in octeon_droq_destroy_ring_buffers() if init didn't alloc all entries.
2. Don't dereference a NULL ptr in octeon_droq_destroy_ring_buffers().
3. For defensive programming, zero the allocated block 'oct->droq' in
   octeon_setup_output_queues() and 'oct->instr_queue' in
   octeon_setup_instr_queues().

change log:
V1 -> V2:
1. Corrected syntax in 'Subject' lines; no functional or code changes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoliquidio: lowmem: init allocated memory to 0
Rick Farrington [Tue, 18 Jul 2017 00:51:37 +0000 (17:51 -0700)]
liquidio: lowmem: init allocated memory to 0

For defensive programming, zero the allocated block 'oct->droq[0]' in
octeon_setup_output_queues() and 'oct->instr_queue[0]' in
octeon_setup_instr_queues().

Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoliquidio: lowmem: do not dereference null ptr
Rick Farrington [Tue, 18 Jul 2017 00:51:10 +0000 (17:51 -0700)]
liquidio: lowmem: do not dereference null ptr

Don't dereference a NULL ptr in octeon_droq_destroy_ring_buffers().

Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoliquidio: lowmem: init allocated memory to 0
Rick Farrington [Tue, 18 Jul 2017 00:50:47 +0000 (17:50 -0700)]
liquidio: lowmem: init allocated memory to 0

Fix GPF in octeon_init_droq(); zero the allocated block 'recv_buf_list'.
This prevents a GPF trying to access an invalid 'recv_buf_list[i]' entry
in octeon_droq_destroy_ring_buffers() if init didn't alloc all entries.

Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoliquidio: support new firmware statistic fw_err_pki
Rick Farrington [Mon, 17 Jul 2017 20:33:14 +0000 (13:33 -0700)]
liquidio: support new firmware statistic fw_err_pki

Added support for new firmware statistic 'tx_err_pki'.

Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com>
Signed-off-by: Derek Chickles <derek.chickles@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'net-attribute_group-const'
David S. Miller [Tue, 18 Jul 2017 19:04:57 +0000 (12:04 -0700)]
Merge branch 'net-attribute_group-const'

Arvind Yadav says:

====================
constify net attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work with const
attribute_group. So mark the non-const structs as const.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: chelsio: cxgb3: constify attribute_group structures.
Arvind Yadav [Tue, 18 Jul 2017 09:46:19 +0000 (15:16 +0530)]
net: chelsio: cxgb3: constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.

File size before:
   text    data     bss     dec     hex filename
  28720     985      12   29717    7415 net/.../cxgb3/cxgb3_main.o

File size After adding 'const':
   text    data     bss     dec     hex filename
  28848     857      12   29717    7415 net/.../cxgb3/cxgb3_main.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: bonding: constify attribute_group structures.
Arvind Yadav [Tue, 18 Jul 2017 09:45:56 +0000 (15:15 +0530)]
net: bonding: constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/netdevice.h> work
with const attribute_group. So mark the non-const structs as const.

File size before:
   text    data     bss     dec     hex filename
   4512    1472       0    5984    1760 drivers/net/bonding/bond_sysfs.o

File size After adding 'const':
   text    data     bss     dec     hex filename
   4576    1408       0    5984    1760 drivers/net/bonding/bond_sysfs.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoarcnet: com20020-pci: constify attribute_group structures.
Arvind Yadav [Tue, 18 Jul 2017 09:45:36 +0000 (15:15 +0530)]
arcnet: com20020-pci: constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/netdevice.h> work
with const attribute_group. So mark the non-const structs as const.

File size before:
   text    data     bss     dec     hex filename
   3409     948      28    4385    1121 drivers/net/arcnet/com20020-pci.o

File size After adding 'const':
   text    data     bss     dec     hex filename
   3473     884      28    4385    1121 drivers/net/arcnet/com20020-pci.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agowireless: iwlegacy: Constify attribute_group structures.
Arvind Yadav [Tue, 18 Jul 2017 09:45:02 +0000 (15:15 +0530)]
wireless: iwlegacy: Constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agowireless: iwlegacy: constify attribute_group structures.
Arvind Yadav [Tue, 18 Jul 2017 09:45:01 +0000 (15:15 +0530)]
wireless: iwlegacy: constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agowireless: ipw2100: constify attribute_group structures.
Arvind Yadav [Tue, 18 Jul 2017 09:45:00 +0000 (15:15 +0530)]
wireless: ipw2100: constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agowireless: ipw2200: constify attribute_group structures.
Arvind Yadav [Tue, 18 Jul 2017 09:44:59 +0000 (15:14 +0530)]
wireless: ipw2200: constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: can: janz-ican3: constify attribute_group structures.
Arvind Yadav [Tue, 18 Jul 2017 09:44:19 +0000 (15:14 +0530)]
net: can: janz-ican3: constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/netdevice.h> work
with const attribute_group. So mark the non-const structs as const.

File size before:
   text    data     bss     dec     hex filename
  11800     368       0   12168    2f88 drivers/net/can/janz-ican3.o

File size After adding 'const':
   text    data     bss     dec     hex filename
  11864     304       0   12168    2f88 drivers/net/can/janz-ican3.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: can: at91_can: constify attribute_group structures.
Arvind Yadav [Tue, 18 Jul 2017 09:44:18 +0000 (15:14 +0530)]
net: can: at91_can: constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/netdevice.h> work
with const attribute_group. So mark the non-const structs as const.

File size before:
   text    data     bss     dec     hex filename
   6164     304       0    6468    1944 drivers/net/can/at91_can.o

File size After adding 'const':
   text    data     bss     dec     hex filename
   6228     240       0    6468    1944 drivers/net/can/at91_can.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: cdc_ncm: constify attribute_group structures.
Arvind Yadav [Tue, 18 Jul 2017 09:43:45 +0000 (15:13 +0530)]
net: cdc_ncm: constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/netdevice.h> work
with const attribute_group. So mark the non-const structs as const.

File size before:
   text    data     bss     dec     hex filename
  13275     928       1   14204    377c drivers/net/usb/cdc_ncm.o

File size After adding 'const':
   text    data     bss     dec     hex filename
  13339     864       1   14204    377c drivers/net/usb/cdc_ncm.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'mlxsw-Preparations-for-IPv6-UC-router'
David S. Miller [Tue, 18 Jul 2017 18:57:34 +0000 (11:57 -0700)]
Merge branch 'mlxsw-Preparations-for-IPv6-UC-router'

Jiri Pirko says:

====================
mlxsw: Preparations for IPv6 UC router

Ido says:

The purpose of this set is to prepare the driver for the introduction of
IPv6 FIB offload. It's mainly composed of small and non-functional
changes, that either add the IPv6 equivalent of existing IPv4 code or
aimed at making the introduction of IPv6-specific code easier.

The first five patches enable IPv6 forwarding in the device and allow us
to configure router interfaces (RIFs) based on inet6addr notifications.

The next six patches add support for programming IPv6 neighbours into
the device's table as well as dumping their activity and updating the
kernel accordingly.

The last 11 patches extend current infrastructure to allow us to program
IPv6 routes, set catch-all IPv6 trap in case of abort and make the code
more receptive towards up-coming changes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Update prefix count for IPv6
Ido Schimmel [Tue, 18 Jul 2017 08:10:30 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Update prefix count for IPv6

The number of possible prefix lengths for IPv6 is 129 and not 128.

Fixes following warning from UBSAN when /128 routes are offloaded:

 UBSAN: Undefined behaviour in
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c:2510:27 index 128 is out
of range for type 'long unsigned int [128]'

Fixes: 5e9c16cc83a7 ("mlxsw: spectrum_router: Implement private fib")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Rename functions to add / delete a FIB entry
Ido Schimmel [Tue, 18 Jul 2017 08:10:29 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Rename functions to add / delete a FIB entry

These functions aren't specific to IPv4 and can be re-used for IPv6.

Drop the '4' designation from their name.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Drop unnecessary parameter
Ido Schimmel [Tue, 18 Jul 2017 08:10:28 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Drop unnecessary parameter

Functions that take as argument a FIB entry don't need to take FIB node
as well, as it can be extracted from the entry.

Remove unnecessary FIB node parameter.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Mark IPv4 specific function accordingly
Ido Schimmel [Tue, 18 Jul 2017 08:10:27 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Mark IPv4 specific function accordingly

The functions to create and destroy a nexthop group are IPv4 specific
and should be renamed accordingly, so that they won't be confused with
the IPv6 specific functions in follow-up patches.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Create IPv4 specific entry struct
Ido Schimmel [Tue, 18 Jul 2017 08:10:26 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Create IPv4 specific entry struct

Some of the parameters stored in the FIB entry structure are specific to
IPv4 and therefore better placed in an IPv4 specific structure.

Create an IPv4 specific structure that encapsulates the common FIB entry
structure and contains IPv4 specific parameters.

In a follow-up patchset an IPv6 specific structure will be introduced.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Set abort trap for IPv6
Ido Schimmel [Tue, 18 Jul 2017 08:10:25 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Set abort trap for IPv6

When we fail to insert a route we invoke the abort mechanism which
flushes all the tables and inserts a default route in each, so that all
packets incoming to the router will be trapped to the CPU.

Upon abort, add an IPv6 default route to the IPv6 tables.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Allow IPv6 routes to be programmed
Ido Schimmel [Tue, 18 Jul 2017 08:10:24 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Allow IPv6 routes to be programmed

Take advantage of previous patch and allow the RALUE register to be
called with IPv6 routes.

In order to re-use as much code as possible between IPv4 and IPv6, only
the lowest-level function that actually does the register packing is
demuxed based on the passed protocol.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: reg: Update RALUE register with IPv6 support
Ido Schimmel [Tue, 18 Jul 2017 08:10:23 +0000 (10:10 +0200)]
mlxsw: reg: Update RALUE register with IPv6 support

Update the register so that IPv6 LPM entries could be programmed to the
device's table.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Extend virtual routers with IPv6 support
Ido Schimmel [Tue, 18 Jul 2017 08:10:22 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Extend virtual routers with IPv6 support

A Virtual Router (VR) is an entity which corresponds to a VRF and
performs FIB lookup in an LPM tree according to the {VR, IP Proto} ->
Tree binding.

Extend the virtual router data structure towards IPv6 FIB offload.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Make FIB node retrieval family agnostic
Ido Schimmel [Tue, 18 Jul 2017 08:10:21 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Make FIB node retrieval family agnostic

A FIB node is an entity which stores routes sharing the same prefix and
length. The data structure itself is already family agnostic, but we
make some of its operations agnostic as well and thus re-use them for
IPv6 offload.

Instead of passing an IPv4-specific structure to fib4_node_get(), pass
general routing parameters and rename the function accordingly.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Don't create FIB node during lookup
Ido Schimmel [Tue, 18 Jul 2017 08:10:20 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Don't create FIB node during lookup

When looking up a FIB entry we shouldn't create the FIB node where it's
supposed to be linked in case the node doesn't already exist.

Instead, lookup the node and fail if it doesn't exist.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Don't assume neighbour type
Ido Schimmel [Tue, 18 Jul 2017 08:10:19 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Don't assume neighbour type

Thankfully, the neighbour subsystem is agnostic to the upper protocol
and used by both IPv4 and IPv6. By removing assumptions regarding the
neighbour type we can thus re-use much of the neighbour-related code for
both IPv4 and IPv6.

For each nexthop, store its gateway IP and for nexthop group store the
neighbour table used by its nexthops.

Use this information throughout the code and remove assumption about the
neighbour type.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Set activity interval according to both neighbour tables
Arkadi Sharshevsky [Tue, 18 Jul 2017 08:10:18 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Set activity interval according to both neighbour tables

The neighbours' activity is currently dumped according to the ARP
table's DELAY_PROBE time, but with the introduction of IPv6 offload we
should set the interval according to the minimum between the ARP and
ndisc tables.

Signed-off-by: Arkadi Sharshvesky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Periodically dump active IPv6 neighbours
Arkadi Sharshevsky [Tue, 18 Jul 2017 08:10:17 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Periodically dump active IPv6 neighbours

In addition to IPv4, periodically dump IPv6 neighbours and update the
kernel about them.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: reg: Update RAUHTD register with IPv6 support
Arkadi Sharshevsky [Tue, 18 Jul 2017 08:10:16 +0000 (10:10 +0200)]
mlxsw: reg: Update RAUHTD register with IPv6 support

Update the register so that the active IPv6 neighbours could be dumped
from the device's neighbour table.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Reflect IPv6 neighbours to the device
Arkadi Sharshevsky [Tue, 18 Jul 2017 08:10:15 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Reflect IPv6 neighbours to the device

As with IPv4, listen to NEIGH_UPDATE events from the ndisc table and
program relevant neighbours to the device's neighbour table.

Note that neighbours with a link-local IP address aren't programmed, as
packets with a link-local destination IP are trapped after LPM lookup
and never reach the neighbour table.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: reg: Update RAUHT register with IPv6 support
Arkadi Sharshevsky [Tue, 18 Jul 2017 08:10:14 +0000 (10:10 +0200)]
mlxsw: reg: Update RAUHT register with IPv6 support

Update the register, so the IPv6 neighbours could be programmed to the
device's neighbour table.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Configure RIFs based on IPv6 addresses
Arkadi Sharshevsky [Tue, 18 Jul 2017 08:10:13 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Configure RIFs based on IPv6 addresses

When a netdev is configured with an IP address a router interface (RIF)
should be configured for it in the device. Allow configuration of RIFs
based on IPv6 address notifications as well as IPv4.

Note that the RIF exists as long as an IP address is configured on the
netdev, regardless of the address family.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Flood unregistered multicast packets to router
Ido Schimmel [Tue, 18 Jul 2017 08:10:12 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Flood unregistered multicast packets to router

Up until now we only flooded broadcast packets to the router when an L3
interface was configured on top of a bridge. However, IPv6 Neighbour
Discovery packets are trapped to the CPU inside the router and these can
be sent with a multicast address.

Flood unregistered multicast packets to the router port, so that
relevant packets could be trapped there.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum: Add support for IPv6 traps
Arkadi Sharshevsky [Tue, 18 Jul 2017 08:10:11 +0000 (10:10 +0200)]
mlxsw: spectrum: Add support for IPv6 traps

Before we can start using IPv6, we need to trap certain control packets
to the CPU. Among others, these include Neighbour Discovery, DHCP and
neighbour misses.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: reg: Enable IPv6 on router interfaces
Arkadi Sharshevsky [Tue, 18 Jul 2017 08:10:10 +0000 (10:10 +0200)]
mlxsw: reg: Enable IPv6 on router interfaces

Enable IPv6 and IPv6 forwarding on router interfaces (RIFs), so that
they will be able to receive and forward IPv6 traffic.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Enable IPv6 router
Arkadi Sharshevsky [Tue, 18 Jul 2017 08:10:09 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Enable IPv6 router

Before we add IPv6 constructs like traps and router interfaces, we first
need to enable IPv6 routing in the device.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'xfrm-remove-flow-cache'
David S. Miller [Tue, 18 Jul 2017 18:13:42 +0000 (11:13 -0700)]
Merge branch 'xfrm-remove-flow-cache'

Florian Westphal says:

====================
xfrm: remove flow cache

After RCU-ification of ipsec packet path there are no major scalability
issues anymore without flow cache.

We still incur a performance hit, which comes mostly from the extra xfrm
dst allocation/freeing.
The last patch in the series adds a simple percpu cache to avoid the
extra allocation if a packet matched the same policies as last one.

The main concern with this is that we will see performance drops,
especially with large numbers of policies/SAs.

However, during hallway discussions at nfws 2017 it seemed the issues
with flow caching outweight the removal downsides, and that it
might be best to just 'remove it' and see where the practical issues
(if any) will appear.

It should now be possible to also remove the genid member in the policies
as we don't hold bundles for prolonged time anymore, but I think
this change is controversial (and intrusive) enough as-is, so defer
that to a later point in time.

Changes since last rfc:

- fix build failures due to implicit interrupt.h includes
- rework last patch (pcpu cache):
 * avoid xchg()
 * check policies for walk.dead = 1 instead of more costly bundle_ok().
 * flush pcpu bundles when sa/policies get removed, to allow module
   references to go away (suggested by Ilan Tayari)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoxfrm: add xdst pcpu cache
Florian Westphal [Mon, 17 Jul 2017 11:57:27 +0000 (13:57 +0200)]
xfrm: add xdst pcpu cache

retain last used xfrm_dst in a pcpu cache.
On next request, reuse this dst if the policies are the same.

The cache will not help with strict RR workloads as there is no hit.

The cache packet-path part is reasonably small, the notifier part is
needed so we do not add long hangs when a device is dismantled but some
pcpu xdst still holds a reference, there are also calls to the flush
operation when userspace deletes SAs so modules can be removed
(there is no hit.

We need to run the dst_release on the correct cpu to avoid races with
packet path.  This is done by adding a work_struct for each cpu and then
doing the actual test/release on each affected cpu via schedule_work_on().

Test results using 4 network namespaces and null encryption:

ns1           ns2          -> ns3           -> ns4
netperf -> xfrm/null enc   -> xfrm/null dec -> netserver

what                    TCP_STREAM      UDP_STREAM      UDP_RR
Flow cache:             14644.61        294.35          327231.64
No flow cache: 14349.81 242.64 202301.72
Pcpu cache: 14629.70 292.21 205595.22

UDP tests used 64byte packets, tests ran for one minute each,
value is average over ten iterations.

'Flow cache' is 'net-next', 'No flow cache' is net-next plus this
series but without this patch.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoxfrm: remove flow cache
Florian Westphal [Mon, 17 Jul 2017 11:57:26 +0000 (13:57 +0200)]
xfrm: remove flow cache

After rcu conversions performance degradation in forward tests isn't that
noticeable anymore.

See next patch for some numbers.

A followup patcg could then also remove genid from the policies
as we do not cache bundles anymore.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoxfrm_policy: make xfrm_bundle_lookup return xfrm dst object
Florian Westphal [Mon, 17 Jul 2017 11:57:25 +0000 (13:57 +0200)]
xfrm_policy: make xfrm_bundle_lookup return xfrm dst object

This allows to remove flow cache object embedded in struct xfrm_dst.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoxfrm_policy: remove xfrm_policy_lookup
Florian Westphal [Mon, 17 Jul 2017 11:57:24 +0000 (13:57 +0200)]
xfrm_policy: remove xfrm_policy_lookup

This removes the wrapper and renames the __xfrm_policy_lookup variant
to get rid of another place that used flow cache objects.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoxfrm_policy: kill flow to policy dir conversion
Florian Westphal [Mon, 17 Jul 2017 11:57:23 +0000 (13:57 +0200)]
xfrm_policy: kill flow to policy dir conversion

XFRM_POLICY_IN/OUT/FWD are identical to FLOW_DIR_*, so gcc already
removed this function as its just returns the argument.  Again, no
code change.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoxfrm_policy: remove always true/false branches
Florian Westphal [Mon, 17 Jul 2017 11:57:22 +0000 (13:57 +0200)]
xfrm_policy: remove always true/false branches

after previous change oldflo and xdst are always NULL.
These branches were already removed by gcc, this doesn't change code.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoxfrm_policy: bypass flow_cache_lookup
Florian Westphal [Mon, 17 Jul 2017 11:57:21 +0000 (13:57 +0200)]
xfrm_policy: bypass flow_cache_lookup

Instead of consulting flow cache, call the xfrm bundle/policy lookup
functions directly.  This pretends the flow cache had no entry.

This helps to gradually remove flow cache integration,
followup commit will remove the dead code that this change adds.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: xfrm: revert to lower xfrm dst gc limit
Florian Westphal [Mon, 17 Jul 2017 11:57:20 +0000 (13:57 +0200)]
net: xfrm: revert to lower xfrm dst gc limit

revert c386578f1cdb4dac230395 ("xfrm: Let the flowcache handle its size by default.").

Once we remove flow cache, we don't have a flow cache limit anymore.
We must not allow (virtually) unlimited allocations of xfrm dst entries.
Revert back to the old xfrm dst gc limits.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agovti: revert flush x-netns xfrm cache when vti interface is removed
Florian Westphal [Mon, 17 Jul 2017 11:57:19 +0000 (13:57 +0200)]
vti: revert flush x-netns xfrm cache when vti interface is removed

flow cache is removed in next commit.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agodrivers: net: add missing interrupt.h include
Florian Westphal [Mon, 17 Jul 2017 11:57:18 +0000 (13:57 +0200)]
drivers: net: add missing interrupt.h include

these drivers use tasklets or irq apis, but don't include interrupt.h.
Once flow cache is removed the implicit interrupt.h inclusion goes away
which will break the build.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'dsa-mv88e6xxx-cleanup-capabilities'
David S. Miller [Tue, 18 Jul 2017 18:10:58 +0000 (11:10 -0700)]
Merge branch 'dsa-mv88e6xxx-cleanup-capabilities'

Vivien Didelot says:

====================
net: dsa: mv88e6xxx: cleanup capabilities

This patch series removes the remaining capabilities as well as the
flags bitmap in the info structures. Most of them are turned into ops,
or new info members.

There is no mv88e6xxx_cap enum or bitmap flags anymore, only
mv88e6xxx_info and mv88e6xxx_ops structures.

While reviewing and documenting the related G2 registers, fix a few
inconsistencies: 88E6185 has no interrupt in G2 and 88E6390 has a POT.

Except these two adjustments, there is no functional changes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: mv88e6xxx: add a multi_chip info flag
Vivien Didelot [Mon, 17 Jul 2017 17:03:46 +0000 (13:03 -0400)]
net: dsa: mv88e6xxx: add a multi_chip info flag

Instead of relying on a bitmap flag, add a new multi_chip info flag to
describe the presence of the indirect SMI access though the two device
registers 0x0 and 0x1.

All remaining capabilities and flags are now unused. Remove the
mv88e6xxx_cap enum and the info flags bitmaps.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: mv88e6xxx: add Energy Detect ops
Vivien Didelot [Mon, 17 Jul 2017 17:03:45 +0000 (13:03 -0400)]
net: dsa: mv88e6xxx: add Energy Detect ops

The 88E6352 family supports Energy Detect and has one bit for Sense and
one bit for periodically transmit NLP (Energy Detect+TM). The 88E6390
family adds another bit to distinguish Auto or SW wake-up. Chips
supporting EEE all have an EEE Enabled bit in the Port Status Register.

This patch adds new ops for the PHY Energy Detect accesses.

This also allows us to get rid of the MV88E6XXX_FLAG_EEE flag.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: mv88e6xxx: add a global2_addr info flag
Vivien Didelot [Mon, 17 Jul 2017 17:03:44 +0000 (13:03 -0400)]
net: dsa: mv88e6xxx: add a global2_addr info flag

Similarly to global1_addr, add a global2_addr member in the info
structure to describe the presence of the Global 2 Registers.

This allows us to get rid of the MV88E6XXX_FLAG_GLOBAL2 flag.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: mv88e6xxx: add POT operation
Vivien Didelot [Mon, 17 Jul 2017 17:03:43 +0000 (13:03 -0400)]
net: dsa: mv88e6xxx: add POT operation

Add a pot_clear operation to clear the Priority Override Table and wrap
its call into a mv88e6xxx_pot_setup helper.

This allows us to get rid of the MV88E6XXX_FLAG_G2_POT flag.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>