Bob Copeland [Wed, 29 Jun 2016 16:29:25 +0000 (19:29 +0300)]
ath10k: fix potential null dereference bugs
Smatch warns about a number of cases in ath10k where a pointer is
null-checked after it has already been dereferenced, in code involving
ath10k private virtual interface pointers.
Fix these by making the dereference happen later.
Addresses the following smatch warnings:
drivers/net/wireless/ath/ath10k/mac.c:3651 ath10k_mac_txq_init() warn: variable dereferenced before check 'txq' (see line 3649)
drivers/net/wireless/ath/ath10k/mac.c:3664 ath10k_mac_txq_unref() warn: variable dereferenced before check 'txq' (see line 3659)
drivers/net/wireless/ath/ath10k/htt_tx.c:70 __ath10k_htt_tx_txq_recalc() warn: variable dereferenced before check 'txq->sta' (see line 52)
drivers/net/wireless/ath/ath10k/htt_tx.c:740 ath10k_htt_tx_get_vdev_id() warn: variable dereferenced before check 'cb->vif' (see line 736)
drivers/net/wireless/ath/ath10k/txrx.c:86 ath10k_txrx_tx_unref() warn: variable dereferenced before check 'txq' (see line 84)
drivers/net/wireless/ath/ath10k/wmi.c:1837 ath10k_wmi_op_gen_mgmt_tx() warn: variable dereferenced before check 'cb->vif' (see line 1825)
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Mohammed Shafi Shajakhan [Wed, 29 Jun 2016 16:29:24 +0000 (19:29 +0300)]
ath10k: remove unneccessary WARN_ON_ONCE in rx during ACS
The below warning message seems to hit occasionally with the following
combination (IPQ4019 + ACS scan) where we receive packets as a self peer
when hostapd does ACS when we bring up AP mode . ath10k has the below
fall back mechanism to fetch current operating channel in rx (it will
check for the next channel tracking variable if the current one is NULL)
[scan channel] --> [rx channel] --> [peer channel] -->
[vdev channel] --> [any vdev channel] --> [target oper channel]
'scan channel' and 'target operating channel' are directly fetched from
firmware events. All the others should be updated by mac80211.
During ACS scan we wouldn't have a valid channel context
assigned from mac80211 ('ar->rx_channel'), and also relying on
('ar->scan_channel') is not helpful (it becomes NULL when it goes to
BSS channel and also when the scan event is completed). In short we
cannot always rely on these two channel tracking variables.
'Target Operating Channel' (ar->tgt_oper_chan) seems to keep track of
the current operating even while we are doing ACS scan and etc. Hence
remove this un-necessary warning message and continue with
target_operating channel. At the worst case scenario when the target
operating channel is invalid (NULL) we already have an ath10k warning
message to notify we really don't have a proper channel configured in
rx to update the rx status("no channel configured; ignoring frame(s)!")
WARNING: CPU: 0 PID: 0 at ath/ath10k/htt_rx.c:803
[<
c0318838>] (warn_slowpath_null) from [<
bf4a0104>]
(ath10k_htt_rx_h_channel+0xe0/0x1b8 [ath10k_core])
[<
bf4a0104>] (ath10k_htt_rx_h_channel [ath10k_core]) from
[<
bf4a025c>] (ath10k_htt_rx_h_ppdu+0x80/0x288 [ath10k_core])
[<
bf4a025c>] (ath10k_htt_rx_h_ppdu [ath10k_core]) from
[<
bf4a1a9c>] (ath10k_htt_txrx_compl_task+0x724/0x9d4 [ath10k_core])
[<
bf4a1a9c>] (ath10k_htt_txrx_compl_task [ath10k_core])
Fixes:
3b0499e9ce42 ("ath10k: reduce warning messages during rx without proper channel context")
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Mohammed Shafi Shajakhan [Wed, 29 Jun 2016 16:29:24 +0000 (19:29 +0300)]
ath10k: fix crash during card removal
Usually when the firmware crashes we check for the value
'FW_IND_EVENT_PENDING' in 'FW_INDICATOR_ADDRESS' and proceed with
disabling the irq and dumping firmware 'crash dump'. Now
when the PCI card is unplugged from the device the PCI controller
seems to generate a spurious interrupt after some time which
was as treated a firmware crash and resulting in the below race
condition (and eventually crashing the system)
ath10k_core_unregister -> ath10k_core_free_board_files
...... device unplug spurious interrupt .........
ath10k_pci_taklet -> ath10k_pci_fw_crashed_dump ...etc
Clearly even after the firmware board files related data structure
is freed up we are getting a spurious interrupt from PCI with 0xfffffff
in the 'FW_INDICATOR_ADDRESS' resulting in scheduling of the pci tasklet
and doing a crash dump, printing f/w board related info resulting in the
below crash. Fix this by detecting this spurious interrupt in ath10k PCI
irq handler itself and return IRQ_NONE. Thanks to Michal Kazior for
helping us conclude the most appropriate fix.
Call trace:
EIP is at ath10k_debug_print_board_info+0x39/0xb0
[ath10k_core]
EAX:
00000000 EBX:
d4de15a0 ECX:
00000000 EDX:
00000064
ESI:
f615ddd0 EDI:
f8530000 EBP:
f615de3c ESP:
f615ddbc
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
CR0:
80050033 CR2:
00000004 CR3:
01c0a000 CR4:
000006f0
Stack:
f615ddd0 00000064 f8b4ecdd 00000000 00000000 00412f4e
00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000
Call Trace:
[<
f8b1f517>] ath10k_print_driver_info+0x17/0x30
[ath10k_core]
[<
f875463a>] ath10k_pci_fw_crashed_dump+0x7a/0xe0
[ath10k_pci]
[<
f87549d0>] ath10k_pci_tasklet+0x70/0x90 [ath10k_pci]
[<
c106151e>] tasklet_action+0x9e/0xb0
Cc: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Guy Mishol [Sun, 19 Jun 2016 14:08:58 +0000 (17:08 +0300)]
wlcore: reconfigure sta rates on authorization
Since stations can now be added before association
(NL80211_FEATURE_FULL_AP_CLIENT_STATE support),
no supported rates are set when the station is added
to the fw, resulting in fw recovery.
Fix it by first configuring the AP basic rates as
the station configured rates (when the station is
first added to the driver), and after the station
was authorized re-configure it, now with the actual
supported rates.
Signed-off-by: Guy Mishol <guym@ti.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Rafał Miłecki [Sat, 18 Jun 2016 23:55:57 +0000 (01:55 +0200)]
brcmfmac: add missing break when deleting P2P_DEVICE
We obviously don't want to fall through in that switch. With this change
1) We wait for event (triggered by p2p_disc) as expected
2) We remove interface manually on timeout
3) We return 0 on success instead of -ENOTSUPP
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Rafał Miłecki [Sat, 18 Jun 2016 16:49:38 +0000 (18:49 +0200)]
brcmfmac: include also core.h header in cfg80211.h
This header provides two inline functions using struct brcmf_if so we
need core.h to avoid:
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h: In function ‘ndev_to_prof’:
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h:368:13: error: dereferencing pointer to incomplete type
return &ifp->vif->profile;
^
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h: In function ‘ndev_to_vif’:
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h:374:12: error: dereferencing pointer to incomplete type
return ifp->vif;
^
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Rafał Miłecki [Fri, 17 Jun 2016 10:48:44 +0000 (12:48 +0200)]
brcmfmac: use const char * for interface name in brcmf_add_if
This function can work just fine with const pointer, it only calls
alloc_netdev which take const as well. Moreover it makes this function
more flexible as some cfg80211 callback may provide const char * as
well, e.g. add_virtual_intf. This will be needed for more advanced
interface management.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Rafał Miłecki [Fri, 17 Jun 2016 10:29:21 +0000 (12:29 +0200)]
brcmfmac: fix lockup when removing P2P interface after event timeout
Removing P2P interface is handled by sending a proper request to the
firmware. On success firmware triggers an event and driver's handler
removes a matching interface.
However on event timeout we remove interface directly from the cfg80211
callback. Current code doesn't handle this case correctly as it always
assumes rtnl to be unlocked.
Fix it by adding an extra rtnl_locked parameter to functions and calling
unregister_netdevice when needed.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Arnd Bergmann [Thu, 16 Jun 2016 13:52:10 +0000 (15:52 +0200)]
wireless: ipw2200: fix old-style declaration
Modern C standards expect the 'inline' keyword to come before the return
type in a declaration, and we get a warning for this with "make W=1":
drivers/net/wireless/intel/ipw2x00/ipw2200.c:4096:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Stanislav Yakovlev <stas.yakovlev@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Arnd Bergmann [Thu, 16 Jun 2016 13:52:09 +0000 (15:52 +0200)]
wireless: brcmsmac: fix old-style declaration
Modern C standards expect the 'static' keyword to come first in a
declaration, and we get a warning for this with "make W=1":
drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c:3353:1: error: 'static' is not at beginning of declaration [-Werror=old-style-declaration]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Arnd Bergmann [Thu, 16 Jun 2016 13:52:08 +0000 (15:52 +0200)]
wireless: airo: rename 'register' variable
'register' is a keyword in C and cannot be used in place of a
variable name, as shown by this -Wextra warning:
drivers/net/wireless/cisco/airo.c:1105:29: error: 'register' is not at beginning of declaration [-Werror=old-style-declaration]
This replaces the 'register' keyword with a 'reg' identifier in
the declaration, which matches the definition and has the intended
meaning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Amitkumar Karwar [Thu, 16 Jun 2016 13:22:26 +0000 (18:52 +0530)]
mwifiex: fix AP start problem for newly added interface
It's been observed that if interface type is changed from managed to
__ap, AP can be successfully started. But there is a problem if new
ap interface is added.
The problem got resolved after sending appropriate commands to firmware
in add_interface handler.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Amitkumar Karwar [Thu, 16 Jun 2016 13:22:25 +0000 (18:52 +0530)]
mwifiex: fix AP unable to start in VHT40 problem
This patch populates secondary channel offset and downloads it to
firmware to fix the problem.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Amitkumar Karwar [Thu, 16 Jun 2016 13:22:24 +0000 (18:52 +0530)]
mwifiex: fix system hang problem after resume
On some platforms, driver is unable to wakeup firmware after system resume
due to a problem at MMC subsystem. Triggering card reset in this case has
a race with card removal from MMC which causes system hang. This patch
resolves the problem by not triggering card reset.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Xinming Hu [Thu, 16 Jun 2016 13:22:23 +0000 (18:52 +0530)]
mwifiex: cancel pending scan during disconnect
It is obeserved that sometimes scan operation will block the disconnect
during system suspend. It's ok to cancel ongoing scan in this case. It
reduces unnecessary system suspend delay.
Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Xinming Hu [Thu, 16 Jun 2016 13:22:22 +0000 (18:52 +0530)]
mwifiex: factor out mwifiex_cancel_scan
This patch creates common function mwifiex_cancel_scan to remove
duplication of code.
Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Ganapathi Bhat [Thu, 16 Jun 2016 13:22:21 +0000 (18:52 +0530)]
mwifiex: Fix an issue spotted by KASAN
When an association command is sent to firmware but the process is
killed before the command response arrives, driver will try to
access bss_desc which is already freed. This issue is fixed by
checking return value of bss_start.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Arnd Bergmann [Wed, 15 Jun 2016 21:30:43 +0000 (23:30 +0200)]
rtlwifi: use s8 instead of char
Compiling the rtlwifi drivers for ARM with gcc -Wextra warns about lots of
incorrect code that results from 'char' being unsigned here, e.g.
realtek/rtlwifi/rc.c:113:18: error: comparison is always true due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8188ee/dm.c:1070:22: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192ce/trx.c:54:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192cu/mac.c:601:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192de/trx.c:53:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192ee/phy.c:1268:12: error: comparison is always true due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192se/rf.c:150:20: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8723be/dm.c:877:29: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8723be/phy.c:386:16: error: comparison is always true due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/dm.c:1514:38: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/phy.c:1558:11: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/phy.c:386:24: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/trx.c:55:12: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/stats.c:31:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]
This patch changes all uses of 'char' in this driver that refer to
8-bit integers to use 's8' instead, which is signed on all architectures.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Pavel Andrianov [Wed, 15 Jun 2016 11:34:03 +0000 (15:34 +0400)]
libertas: Add spinlock to avoid race condition
lbs_mac_event_disconnected may free priv->currenttxskb
while lbs_hard_start_xmit accesses to it.
The patch adds a spinlock for mutual exclusion.
Tested on OLPC XO-1 (usb8388) and XO-1.5 (sd8686) with v4.7-rc3.
Confirmed that lbs_mac_event_disconnected is being called on the
station when hostapd on access point is given SIGHUP.
Signed-off-by: Pavel <andrianov@ispras.ru>
Tested-by: James Cameron <quozl@laptop.org>
Acked-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Bruno Herrera [Fri, 10 Jun 2016 00:46:46 +0000 (21:46 -0300)]
wlcore: sdio: Fix crash on wlcore_probe_of when failing to parse/map irq
pdev_data pointer is being freed with kfree but the pointer is not dynamic allocated.
Signed-off-by: Bruno Herrera <bruherrera@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Andy Shevchenko [Thu, 9 Jun 2016 18:38:49 +0000 (14:38 -0400)]
rtl8xxxu: tuse %*ph to dump buffers
Use %*ph specifier to dump small buffers in hex format instead of doing this
byte-by-byte.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Jes Sorensen [Thu, 9 Jun 2016 18:38:48 +0000 (14:38 -0400)]
rtl8xxxu: Add additional documentation for RX DMA registers
This also renames REG_USB_AGG_{TO,TH} to REG_USB_AGG_{TIMEOUT,THRESH}
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Jes Sorensen [Thu, 9 Jun 2016 18:38:47 +0000 (14:38 -0400)]
rtl8xxxu: Add bit definitions for REG_USB_SPECIAL_OPTION
Documentation for enabling USB aggregation and whether to select
interrupt or bulk delivery of interrupt events.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Bhaktipriya Shridhar [Tue, 7 Jun 2016 20:08:53 +0000 (01:38 +0530)]
libertas_tf: Remove create_workqueue
alloc_workqueue replaces deprecated create_workqueue().
A dedicated workqueue has been used since the workitem (viz
&priv->cmd_work per priv, which maps to lbtf_cmd_work) is involved in
actual command processing and may be used on a memory reclaim path.
The workitems require forward progress under memory pressure and hence,
WQ_MEM_RECLAIM has been set. Since there are only a fixed number of work
items, explicit concurrency limit is unnecessary here.
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Rafał Miłecki [Tue, 7 Jun 2016 19:10:18 +0000 (21:10 +0200)]
brcmfmac: slightly simplify building interface combinations
This change reorders some operations in brcmf_setup_ifmodes in hope to
make it simpler:
1) It allocates arrays right before filling them. This way it's easier
to follow requested array length as it's immediately followed by
code filling it. It's easier to check e.g. why we need 4 entries for
P2P. Other than that it deduplicates some checks (e.g. for P2P).
2) It reorders code to first prepare limits and then define a new combo.
Previously this was mixed (e.g. we were setting num of channels
before preparing limits).
3) It modifies mbss code to use i variable just like other combos do.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Grygorii Strashko [Mon, 27 Jun 2016 09:05:11 +0000 (12:05 +0300)]
net: ethernet: ti: cpdma: switch to use genalloc
TI CPDMA currently uses a bitmap for tracking descriptors alloactions
allocations, but The genalloc already handles the same and can be used
as with special memory (SRAM) as with DMA cherent memory chank
(dma_alloc_coherent()). Hence, switch to using genalloc and add
desc_num property for each channel for limitation of max number of
allowed descriptors for each CPDMA channel. This patch do not affect
on net throuput.
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Tested-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zhao Qiang [Mon, 27 Jun 2016 01:30:22 +0000 (09:30 +0800)]
Maxim/driver: Add driver for maxim ds26522
Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Philippe Reynes [Sat, 25 Jun 2016 21:05:16 +0000 (23:05 +0200)]
net: ethernet: dwc_eth_qos: use phy_ethtool_{get|set}_link_ksettings
There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Philippe Reynes [Sat, 25 Jun 2016 21:05:15 +0000 (23:05 +0200)]
net: ethernet: dwc_eth_qos: use phydev from struct net_device
The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Philippe Reynes [Sat, 25 Jun 2016 20:05:27 +0000 (22:05 +0200)]
net: ethernet: sxgbe: use phy_ethtool_{get|set}_link_ksettings
There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Philippe Reynes [Sat, 25 Jun 2016 20:05:26 +0000 (22:05 +0200)]
net: ethernet: sxgbe: use phydev from struct net_device
The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Philippe Reynes [Sat, 25 Jun 2016 19:09:02 +0000 (21:09 +0200)]
net: ethernet: r6040: use phy_ethtool_{get|set}_link_ksettings
There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Philippe Reynes [Sat, 25 Jun 2016 19:09:01 +0000 (21:09 +0200)]
net: ethernet: r6040: use phydev from struct net_device
The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Philippe Reynes [Sat, 25 Jun 2016 14:55:13 +0000 (16:55 +0200)]
net: ethernet: hix5hd2: use phy_ethtool_{get|set}_link_ksettings
There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Philippe Reynes [Sat, 25 Jun 2016 14:55:12 +0000 (16:55 +0200)]
net: ethernet: hix5hd2: use phydev from struct net_device
The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phy in the private structure, and update the driver to use the
one contained in struct net_device.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 28 Jun 2016 12:57:28 +0000 (08:57 -0400)]
Merge branch 'cpsw-runtime-pm'
Grygorii Strashko says:
====================
drivers: net: cpsw: improve runtime pm
This series intended to improve runtime PM and allow CPSW to be
RPM suspended when all ethX netdevices are down.
To achieve above goal it is required to relax runtime PM constraints for
Davinci MDIO which blocks CPSW runtime PM now, because Davinci MDIO is always
powered on during probe and powered off only when it's going to be removed.
- Patches 6-11 implement PM runtime autosuspend for Davinci MDIO, but keep it
disabled by default, because Davinci MDIO is integrated in big set of TI devices
and not all of them verified to work correctly with RPM autosuspend enabled:
expected to work on SoCs where MDIO is defined as part of CPSW in DT
(cpsw.c DRA7/am57x, am437x, am335x)
The CPSW need to be fixed before RPM suspended can be allowed:
- Patches 1-5 ensure that CPSW will not cause L3 errors while it is in RPM
suspended state.
Davinci MDIO RPM autosuspend can be enabled through sysfs:
echo 100 > /sys/devices/../
48484000.ethernet/
48485000.mdio/power/autosuspend_delay_ms
Patches 12 - 15: introduce new compatible string "ti,cpsw-mdio" which is used
then to enable RPM for am335x/am437x/dra7 SoCs.
Tested on am335x, am437x, am572x and k2g (on k2g with RPM disabled for Davinci MDIO)
These changes should not affect on errata i877 implementation on DRA7.
Power measurement on am335x GP EVM:
Without this series: 547.60 mW total SoC power
With this series + "ifconfig eth0 down": 477.32 mW Total Soc Power
Changes in v2:
- CPSW ethtool interface updated to use .begin()/.complete() callbacks
- kbuild failure fixed
- davinci_mdio DT updated with proper description of allowed compatible strings
combinations
Link on v1:
https://lkml.org/lkml/2016/6/15/362
====================
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:55 +0000 (21:23 +0300)]
ARM: dts: am335x/am437x/dra7: use new "ti, cpsw-mdio" compat string
Add "ti,cpsw-mdio" for am335x/am437x/dra7 SoCs where MDIO is
implemented as part of TI CPSW and, this way, enable PM runtime auto
suspend for Davinci MDIO driver on these paltforms.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:54 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: enable pm runtime auto for ti cpsw-mdio
Use "ti,cpsw-mdio" to enable PM runtime auto-suspend on supported
platforms, where MDIO is implemented as part of TI CPSW.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:53 +0000 (21:23 +0300)]
net: davinci_mdio: introduce "ti,cpsw-mdio" compat string
Introduce "ti,cpsw-mdio" compatible string for Davinci MDIO, because
it's required to distinguish the case when MDIO is part of TI CPSW to
enable features supported by TI CPSW (for example, enable PM
management).
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:52 +0000 (21:23 +0300)]
net: davinci_mdio: document missed "ti, am4372-mdio" compat string
Document missed "ti,am4372-mdio" compat string used for TI am437x SoC
(am4372.dtsi).
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:51 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: implement pm runtime auto mode
Davinci MDIO is always used as slave device which services
read/write requests from MDIO/PHY core. It doesn't use IRQ also.
As result, It's possible to relax PM runtime constraints for Davinci
MDIO and enable it on demand, instead of powering it during probe
and powering off during removal.
Hence, implement PM runtime autosuspend for Davinci MDIO, but keep it
disabled by default, because Davinci MDIO is integrated in big set of
TI devices and not all of them expected to work corectly with RPM
autosuspend enabled:
- expected to work on SoCs where MDIO is part of TI CPSW
(cpsw.c DRA7/am57x, am437x, am335x, dm814x)
- not verified on Keystone 2 and other SoCs where MDIO is used with TI EMAC IP
(davinci_emac.c: dm6467-emac, am3517-emac, dm816-emac).
Davinci MDIO RPM autosuspend can be enabled through sysfs:
echo 100 > /sys/devices/../
48484000.ethernet/
48485000.mdio/power/autosuspend_delay_ms
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:50 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: add pm runtime callbacks
Add PM runtime .runtime_suspend()/.runtime_resume() callbacks and
perform Davinci MDIO enabling/disabling from these callbacks. This
allows to reuse pm_runtime_force_suspend/resume() APIs during System
suspend and required for further implementation of PM runtime
autosuspend.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:49 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: split reset function on init_clk and enable
The Davinci MDIO MDIO_CONTROL.CLKDIV can be calculated only once
during probe, hence split __davinci_mdio_reset() on
davinci_mdio_init_clk() and davinci_mdio_enable(). Initialize and
save CLKDIV in .probe(). Then just use saved value.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:48 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: drop suspended and lock fields from mdio_data
It's not expected Davinci MDIO to be accessible after its suspend
callbacks have been called:
- all consumers of Davinci MDIO will stop/disconnect phys at Device
suspend stage;
- all phys are expected to be suspned already by PHY/MDIO core;
- MDIO locking is done by MDIO Bus code.
Hence, it's safe to drop "suspended" and "lock" fields from mdio_data.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:47 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: remove pm runtime calls from suspend callbacks
PM runtime is disabled when Davinci MDIO .suspend_late() and
.resume_early() callbacks are called. As result, any PM runtime calls here will
be just a nop and can be removed.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:46 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: do pm runtime initialization later in probe
Do PM runtime initialization later in probe - this allows to simplify
error handling a bit.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:45 +0000 (21:23 +0300)]
drivers: net: cpsw: ndev: fix accessing to suspended device
The CPSW might be suspended by RPM if all ethX interfaces are down,
but it still could be accesible through net_device_ops interfce. In
this case net_device_ops operations requiring registers access will
cause L3 errors and CPSW crash.
Hence, fix it by adding RPM get/put calls in net_device_ops callbacks
which need to access CPSW registers: .ndo_set_mac_address(),
.ndo_vlan_rx_add_vid(), .ndo_vlan_rx_kill_vid().
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:44 +0000 (21:23 +0300)]
drivers: net: cpsw: ethtool: fix accessing to suspended device
The CPSW might be suspended by RPM if all ethX interfaces are down,
but it still could be accesible through ethtool interfce. In this case
ethtool operations, requiring registers access, will cause L3 errors and
CPSW crash.
ethtool callbcaks which need to access CPSW registers now:
.set_coalesce(), .get_ethtool_stats(), .set_pauseparam(), .get_regs()
Hence, fix it by adding .begin()/.complete() ethtool callbacks, which
will be called before/after each ethtool operation runs, and do CPSW
RPM handling in these callbacks. That way CPSW will be active while
handling ethtool requests.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:43 +0000 (21:23 +0300)]
drivers: net: cpsw: remove pm runtime calls from suspend callbacks
PM runtime is properly handled in cpsw_ndo_open/stop(), as result it
isn't required to duplicate these calls in .suspend()/.resume()
callbacks. Moreover, it might cause unnecessary RPM resume of CPSW
during System suspend in the case it's already suspended because
all ethX interfaces are down already, before System suspend started.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:42 +0000 (21:23 +0300)]
drivers: net: cpsw: check return code from pm runtime calls
Add missed check of return code from PM runtime get() calls.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 24 Jun 2016 18:23:41 +0000 (21:23 +0300)]
drivers: net: cpsw: fix suspend when all ethX devices are down
The cpsw_suspend() could trigger L3 error and CPSW will stop
functioning if System enters suspend when all ethX net-devices are
down - in this case CPSW could be already suspended by PM runtime, but
cpsw_suspend() will try to call soft_reset_slave() unconditionally
and access CPSW registers.
Hence, fix it by moving soft_reset_slave() from cpsw_suspend() to
cpsw_slave_stop(). This way slave ports will be reset when CPSW is
active and will be in proper state during Suspend.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 28 Jun 2016 12:54:28 +0000 (08:54 -0400)]
Merge branch 'stmmac-next'
Giuseppe Cavallaro says:
====================
stmmac: rework and enhance the PCS support
The 3.xx and 4.xx synopsys gmacs have a very similar
PCS embedded module and they share almost the same registers;
for example:
AN_Control, AN_Status, AN_Advertisement, AN_Link_Partner_Ability,
AN_Expansion, TBI_Extended_Status.
Just the RGMII/SMII Control/Status register differs.
So these patches aim to reorganize and enhance the PCS support;
to do that, some small inline functions have been provided and
also some rework to the PCS ISR part has been done.
In the end, the SGMII for MAC2MAC connection has been introduced.
All patches have been built on top of net-next git and, as for
the previous version, not fully tested.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Giuseppe CAVALLARO [Fri, 24 Jun 2016 13:16:26 +0000 (15:16 +0200)]
drivers: net: stmmac: add port selection programming
In case of SGMII more, for example when a MAC2MAC connection
is needed, the port selection bits (inside the MAC configuration
registers) have to be programmed according to the link selected.
So the patch adds a new DT parameter to pass the port selection
and to programmed related PCS and CORE to use it.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Giuseppe CAVALLARO [Fri, 24 Jun 2016 13:16:25 +0000 (15:16 +0200)]
drivers: net: stmmac: rework core ISR to better manage PCS and PMT
By default, all gmac cores disable the PCS block and always
enable the PMT.
Note that this is done in a different way by 3.x and 4.x cores.
With this rework, PCS and PMT interrupt masks can be driven by
parameters now moved inside the mac_device_info structure
and the settings follow what the HW capability register reports.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Giuseppe CAVALLARO [Fri, 24 Jun 2016 13:16:24 +0000 (15:16 +0200)]
drivers: net: stmmac: reworking the PCS code.
The 3.xx and 4.xx synopsys gmacs have a very similar
PCS embedded module and they share almost the same registers:
for example:
AN_Control, AN_Status, AN_Advertisement, AN_Link_Partner_Ability,
AN_Expansion, TBI_Extended_Status.
Just the RGMII/SMII Control/Status register differs.
So This patch aims to reorganize and enhance the PCS support.
It removes the existent support from the dwmac1000/dwmac4_core.c
moving basic PCS functions inside a new file called: stmmac_pcs.h.
The patch also reviews the available APIs to be better shared among
different hardware and easily enhanced to support new features.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Fri, 24 Jun 2016 09:24:08 +0000 (11:24 +0200)]
of_mdio: select fixed phy support unconditionally
Calling the fixed-phy functions when CONFIG_FIXED_PHY=m as a previous
change tried cannot work if the caller is in built-in code:
drivers/of/built-in.o: In function `of_phy_register_fixed_link':
of_reserved_mem.c:(.text+0x85e0): undefined reference to `fixed_phy_register'
Making of_mdio depend on 'FIXED_PHY || !FIXED_PHY' would solve this
dependency by enforcing that OF_MDIO itself becomes a loadable module
when FIXED_PHY=y, but that creates a different dependency as it
breaks any built-in ethernet driver that uses of_mdio.
Making FIXED_PHY a bool option also cannot work, since it depends on
PHYLIB, which again is tristate.
This version now uses 'select FIXED_PHY' to ensure that the fixed-phy
portion of of_mdio is not optional. The main downside of this is
a small increase in code size for cases that do not need fixed phy
support, but it should avoid all of the link-time problems.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: d1bd330a229f ("of_mdio: Enable fixed PHY support if driver is a module")
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Amitoj Kaur Chawla [Fri, 24 Jun 2016 06:23:54 +0000 (11:53 +0530)]
caif: Remove unneeded header file
Drop redundant include of moduleparam.h
The Coccinelle semantic patch used to make this change is as follows:
@ includesmodule @
@@
#include <linux/module.h>
@ depends on includesmodule @
@@
- #include <linux/moduleparam.h>
Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Fri, 24 Jun 2016 01:42:51 +0000 (18:42 -0700)]
net: diag: Add support to filter on device index
Add support to inet_diag facility to filter sockets based on device
index. If an interface index is in the filter only sockets bound
to that index (sk_bound_dev_if) are returned.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Philippe Reynes [Thu, 23 Jun 2016 21:48:59 +0000 (23:48 +0200)]
net: ethernet: dnet: use phy_ethtool_{get|set}_link_ksettings
There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Philippe Reynes [Thu, 23 Jun 2016 21:48:58 +0000 (23:48 +0200)]
net: ethernet: dnet: use phydev from struct net_device
The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 27 Jun 2016 14:41:02 +0000 (10:41 -0400)]
Merge branch 'sfp-infra'
Russell King says:
====================
Initial SFP support patches
Please review and merge this initial patch set, which is part of a
larger set previously posted adding SFP support to phy and mvneta.
This initial set are focused on cleaning up and reorganising the
fixed-phy code to allow the core software-phy code to be re-used.
These are based on net-next.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Thu, 23 Jun 2016 13:50:25 +0000 (14:50 +0100)]
phy: improve safety of fixed-phy MII register reading
There is no prevention of a concurrent call to both fixed_mdio_read()
and fixed_phy_update_state(), which can result in the state being
modified while it's being inspected. Fix this by using a seqcount
to detect modifications, and memcpy()ing the state.
We remain slightly naughty here, calling link_update() and updating
the link status within the read-side loop - which would need rework
of the design to change.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Thu, 23 Jun 2016 13:50:20 +0000 (14:50 +0100)]
phy: generate swphy registers on the fly
Generate software phy registers as and when requested, rather than
duplicating the state in fixed_phy. This allows us to eliminate
the duplicate storage of of the same data, which is only different
in format.
As fixed_phy_update_regs() no longer updates register state, rename
it to fixed_phy_update().
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Thu, 23 Jun 2016 13:50:15 +0000 (14:50 +0100)]
phy: separate swphy state validation from register generation
Separate out the generation of MII registers from the state validation.
This allows us to simplify the error handing in fixed_phy() by allowing
earlier error detection.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Thu, 23 Jun 2016 13:50:10 +0000 (14:50 +0100)]
phy: convert swphy register generation to tabular form
Convert the swphy register generation to tabular form which allows us
to eliminate multiple switch() statements. This results in a smaller
object code size, more efficient, and easier to add support for faster
speeds.
Before:
Idx Name Size VMA LMA File off Algn
0 .text
00000164 00000000 00000000 00000034 2**2
text data bss dec hex filename
388 0 0 388 184 swphy.o
After:
Idx Name Size VMA LMA File off Algn
0 .text
000000fc 00000000 00000000 00000034 2**2
5 .rodata
00000028 00000000 00000000 00000138 2**2
text data bss dec hex filename
324 0 0 324 144 swphy.o
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Thu, 23 Jun 2016 13:50:05 +0000 (14:50 +0100)]
phy: move fixed_phy MII register generation to a library
Move the fixed_phy MII register generation to a library to allow other
software phy implementations to use this code.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 27 Jun 2016 14:33:42 +0000 (10:33 -0400)]
Merge tag 'linux-can-next-for-4.8-
20160623' of git://git./linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
pull-request: can-next 2016-06-17
this is a pull request of 4 patches for net-next/master.
Arnd Bergmann's patch fixes a regresseion in af_can introduced in
linux-can-next-for-4.8-
20160617. There are two patches by Ramesh
Shanmugasundaram, which add CAN-2.0 support to the rcar_canfd driver.
And a patch by Ed Spiridonov that adds better error diagnoses messages
to the Ed Spiridonov driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Amitoj Kaur Chawla [Thu, 23 Jun 2016 04:49:37 +0000 (10:19 +0530)]
tipc: Use kmemdup instead of kmalloc and memcpy
Replace calls to kmalloc followed by a memcpy with a direct call to
kmemdup.
The Coccinelle semantic patch used to make this change is as follows:
@@
expression from,to,size,flag;
statement S;
@@
- to = \(kmalloc\|kzalloc\)(size,flag);
+ to = kmemdup(from,size,flag);
if (to==NULL || ...) S
- memcpy(to, from, size);
Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Wed, 22 Jun 2016 17:35:05 +0000 (18:35 +0100)]
ethernet: xircom: fix spelling mistakes on "excessive collisions"
trivial fixes to spelling mistakes of the words "excessive collisions"
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Wed, 22 Jun 2016 16:42:21 +0000 (17:42 +0100)]
net: tc35815: fix spelling mistake on "descriptors"
trivial fixes to spelling mistakes of the word "descriptors"
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 27 Jun 2016 08:10:47 +0000 (04:10 -0400)]
Merge branch 'mlx5e-100G-extensions'
Saeed Mahameed says:
====================
Mellanox 100G mlx5e Ethernet extensions
This series includes multiple features extensions for mlx5 Ethernet netdevice driver.
Namely, TX Rate limiting, RX interrupt moderation, ethtool settings.
TX Rate limiting:
- ConnectX-4 rate limiting infrastructure
- Set max rate NDO support
RX interrupt moderation:
- CQE based coalescing option (controlled via priv flags)
- Adaptive RX coalescing
ethtool settings:
- priv flags callbacks
- Support new ksettings API
- Add 50G missing link mode
- Support auto negotiation on/off
Applied on top:
0e9390ebf1fe ("Merge branch 'mlxsw-next'")
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Gal Pressman [Thu, 23 Jun 2016 14:02:46 +0000 (17:02 +0300)]
net/mlx5e: Report correct auto negotiation and allow toggling
Previous to this patch auto negotiation was reported off although it was
on by default in hardware. This patch reports the correct information to
ethtool and allows the user to toggle it on/off.
Added another parameter to set port proto function in order to pass
the auto negotiation field to the hardware.
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gal Pressman [Thu, 23 Jun 2016 14:02:45 +0000 (17:02 +0300)]
net/mlx5e: Use new ethtool get/set link ksettings API
Use new get/set link ksettings and remove get/set settings legacy
callbacks.
This allows us to use bitmasks longer than 32 bit for supported and
advertised link modes and use modes that were previously not supported.
Signed-off-by: Gal Pressman <galp@mellanox.com>
CC: Ben Hutchings <bwh@kernel.org>
CC: David Decotigny <decot@googlers.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gal Pressman [Thu, 23 Jun 2016 14:02:44 +0000 (17:02 +0300)]
net/mlx5e: Add missing 50G baseSR2 link mode
Add MLX5E_50GBASE_SR2 as ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT.
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Cc: Ben Hutchings <bwh@kernel.org>
Cc: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gal Pressman [Thu, 23 Jun 2016 14:02:43 +0000 (17:02 +0300)]
ethtool: Add 50G baseSR2 link mode
Add ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT bit.
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Cc: Ben Hutchings <bwh@kernel.org>
Cc: David Decotigny <decot@googlers.com>
Acked-By: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gal Pressman [Thu, 23 Jun 2016 14:02:42 +0000 (17:02 +0300)]
net/mlx5e: Toggle link only after modifying port parameters
Add a dedicated function to toggle port link. It should be called only
after setting a port register.
Toggle will set port link to down and bring it back up in case that it's
admin status was up.
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gil Rockah [Thu, 23 Jun 2016 14:02:41 +0000 (17:02 +0300)]
net/mlx5e: Support adaptive RX coalescing
Striving for high message rate and low interrupt rate.
Usage:
ethtool -C <interface> adaptive-rx on/off
Signed-off-by: Gil Rockah <gilr@mellanox.com>
Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
CC: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tariq Toukan [Thu, 23 Jun 2016 14:02:40 +0000 (17:02 +0300)]
net/mlx5e: CQE based moderation
In this mode the moderation timer will restart upon
new completion (CQE) generation rather than upon interrupt
generation.
The outcome is that for bursty traffic the period timer will never
expire and thus only the moderation frames counter will dictate
interrupt generation, thus the interrupt rate will be relative
to the incoming packets size.
If the burst seizes for "moderation period" time then an interrupt
will be issued immediately.
CQE based moderation is off by default and can be controlled
via ethtool set_priv_flags.
Performance tested on ConnectX4-Lx 50G.
Less packet loss in netperf UDP and TCP tests, with no bw degradation,
for both single and multi streams, with message sizes of
64, 1024, 1472 and 32768 byte.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Gil Rockah <gilr@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gal Pressman [Thu, 23 Jun 2016 14:02:39 +0000 (17:02 +0300)]
net/mlx5e: Introduce net device priv flags infrastructure
Introduce an infrastructure for getting/setting private net device
flags.
Currently a 'nop' priv flag is added, following patches will override
the flag will actual feature specific flags.
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yevgeny Petrilin [Thu, 23 Jun 2016 14:02:38 +0000 (17:02 +0300)]
net/mlx5e: Add TXQ set max rate support
Implement set_maxrate ndo.
Use the rate index from the hardware table to attach to channel SQ/TXQ.
In case of failure to configure new rate, the queue remains with
unlimited rate.
We save the configuration on priv structure and apply it each time
Send Queues are being reinitialized (after open/close) operations.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yevgeny Petrilin [Thu, 23 Jun 2016 14:02:37 +0000 (17:02 +0300)]
net/mlx5: Rate limit tables support
Configuring and managing HW rate limit tables.
The HW holds a table of rate limits, each rate is
associated with an index in that table.
Later a Send Queue uses this index to set the rate limit.
Multiple Send Queues can have the same rate limit, which is
represented by a single entry in this table.
Even though a rate can be shared, each queue is being rate
limited independently of others.
The SW shadow of this table holds the rate itself,
the index in the HW table and the refcount (number of queues)
working with this rate.
The exported functions are mlx5_rl_add_rate and mlx5_rl_remove_rate.
Number of different rates and their values are derived
from HW capabilities.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 27 Jun 2016 08:06:31 +0000 (04:06 -0400)]
Merge branch 'be2net-next'
Sathya Perla says:
====================
be2net: patch set
Hi Dave, pls consider commiting the following patches to the net-next tree.
Thanks!
Patch 1 replaces the be_max_eqs() macro with two new macros called
be_max_nic_eqs() and be_max_func_eqs() to clear confusion in that part
of the code.
Patch 2 adds support to configure asymmetric number of rx/tx queues via
ethtool set-channels option.
Patch 3 disables EVB when VFs are not enabled on a BE3 SR-IOV config to
avoid the broadcast echo problem.
Patch 4 updates copyright markings in be2net src files
Patch 5 updates the be2net maintainers' list
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Sathya Perla [Wed, 22 Jun 2016 12:54:57 +0000 (08:54 -0400)]
be2net: update be2net maintainers list
This patch removes Padmanabh's name from the maintainers list as he's no
longer with the company. It also adds the driver name on the headline to
make it easy to lookup the maintainers list by the driver name.
Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Somnath Kotur [Wed, 22 Jun 2016 12:54:56 +0000 (08:54 -0400)]
be2net: Change copyright markings in source files
This patch updates year and company name in the copyright markings in the
be2net source files.
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Somnath Kotur [Wed, 22 Jun 2016 12:54:55 +0000 (08:54 -0400)]
be2net: Fix broadcast echoes from EVB in BE3
On SR-IOV profiles, when the user connects a Linux Bridge or OVS to a BE3
vport, they suffer the "broadcast/multicast echo" problem. BE3 EVB echoes
broadcast and multicast packets back to PF's vport confusing the
Linux bridge. BE3 relies on the src-mac addr being programmed on the
interface to avoid sending back an echo of a broadcast or multicast packet
on a vPort. When a Linux bridge is connected to a BE3, the mac-addr of the
VM behind the bridge doesn't get configured on the vPort and so echo
cancellation doesn't work.
This patch worksaround this problem by disabling the EVB initially
and re-enabling it *only* when SR-IOV is enabled by the user. For the
driver fix to work, the BE3 FW version must be >= 11.1.84.0.
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sathya Perla [Wed, 22 Jun 2016 12:54:54 +0000 (08:54 -0400)]
be2net: support asymmetric rx/tx queue counts
be2net so far supported creation of RX/TX queues only in pairs.
On configs where rx and tx queue counts are different, creation of only
the lesser number of queues has been supported.
This patch now allows a combination of RX/TX-only channels along with
combined channels. N TX-queues and M RX-queues can be created with the
following cmds:
ethtool -L ethX combined N rx M-N (when N < M)
ethtool -L ethX combined M tx N-M (when M < N)
Setting both RX-only and TX-only channels is still not supported.
It is mandatory to create atleast one combined channel.
Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sathya Perla [Wed, 22 Jun 2016 12:54:53 +0000 (08:54 -0400)]
be2net: fix definition of be_max_eqs()
The EQs available on a function are shared between NIC and RoCE.
The be_max_eqs() macro was so far being used to refer to the max number of
EQs available for NIC. This has caused some confusion in the code. To fix
this confusion this patch introduces a new macro called be_max_nic_eqs()
to refer to the max number of EQs avialable for NIC only and renames
be_max_eqs() to be_max_func_eqs().
Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 27 Jun 2016 08:02:01 +0000 (04:02 -0400)]
Merge branch 'fec-new-type-device'
Andy Duan says:
====================
net: fec: add new type device
Different i.MX SOC FEC support different features like :
- i.MX6Q/DL FEC does not support AVB and interrupt coalesc
- i.MX6SX/i.MX7D supports AVB and interrupt coalesc
- i.MX6UL/ULL does not support AVB, but support interrupt coalesc
Then, add new quirk flag to judge the supported features, and add new
type device for i.MX6UL.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Fugang Duan [Wed, 22 Jun 2016 10:52:36 +0000 (18:52 +0800)]
net: fec: use a more proper compatible string for i.MX6UL type device
i.MX6UL is a member in i.MX series family, the SOC FEC inherits from
i.MX6SX but removes some IP features, lets define a new type for fec
device.
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fugang Duan [Wed, 22 Jun 2016 10:52:35 +0000 (18:52 +0800)]
net: fec: add interrupt coalesc quirk flag
Different i.MX SOC FEC support different features like :
- i.MX6Q/DL FEC does not support AVB and interrupt coalesc
- i.MX6SX/i.MX7D supports AVB and interrupt coalesc
- i.MX6UL/ULL does not support AVB, but support interrupt coalesc
So, add new quirk flag to judge the supported features.
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 26 Jun 2016 20:01:54 +0000 (16:01 -0400)]
Merge tag 'rxrpc-rewrite-
20160622-2' of git://git./linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Get rid of conn bundle and transport structs
Here's the next part of the AF_RXRPC rewrite. The primary purpose of this
set is to get rid of the rxrpc_conn_bundle and rxrpc_transport structs.
This simplifies things for future development of the connection handling.
To this end, the following significant changes are made:
(1) The rxrpc_connection struct is given pointers to the local and peer
endpoints, inside the rxrpc_conn_parameters struct. Pointers to the
transport's copy of these pointers are then redirected to the
connection struct.
(2) Exclusive connection handling is fixed. Exclusive connections should
do just one call and then be retired. They are used in security
negotiations and, I believe, the idea is to avoid reuse of negotiated
security contexts.
The current code is doing a single connection per socket and doing all
the calls over that. With this change it gets a new connection for
each call made.
(3) A new sendmsg() control message marker is added to make individual
calls operate over exclusive connections. This should be used in
future in preference to the sockopt that marks a socket as "exclusive
connection".
(4) IDs for client connections initiated by a machine are now allocated
from a global pool using the IDR facility and are unique across all
client connections, no matter their destination. The IDR facility is
then used to look up a connection on the connection ID alone. Other
parameters are then verified afterwards.
Note that the IDR facility may use a lot of memory if the IDs it holds
are widely scattered. Given this, in a future commit, client
connections will be retired if they are more than a certain distance
from the last ID allocated.
The client epoch is advanced by 1 each time the client ID counter
wraps. Connections outside the current epoch will also be retired in
a future commit.
(5) The connection bundle concept is removed and the client connection
tree is moved into the local endpoint. The queue for waiting for a
call channel is moved to the rxrpc_connection struct as there can only
be one connection for any particular key going to any particular peer
now.
(6) The rxrpc_transport struct is removed and the service connection tree
is moved into the peer struct.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Xing Zheng [Tue, 21 Jun 2016 12:33:28 +0000 (20:33 +0800)]
net: stmmac: dwmac-rk: add rk3228-specific data
Add constants and callback functions for the dwmac on rk3228/rk3229 socs.
As can be seen, the base structure is the same, only registers and the
bits in them moved slightly.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 25 Jun 2016 16:19:41 +0000 (12:19 -0400)]
Merge branch 'net-sched-bulk-dequeue'
Eric Dumazet says:
====================
net_sched: bulk dequeue and deferred drops
First patch adds an additional parameter to ->enqueue() qdisc method
so that drops can be done outside of critical section
(after locks are released).
Then fq_codel can have a small optimization to reduce number of cache
lines misses during a drop event
(possibly accumulating hundreds of packets to be freed).
A small htb change exports the backlog in class dumps.
Final patch adds bulk dequeue to qdiscs that were lacking this feature.
This series brings a nice qdisc performance increase (more than 80 %
in some cases).
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 22 Jun 2016 06:16:52 +0000 (23:16 -0700)]
net_sched: generalize bulk dequeue
When qdisc bulk dequeue was added in linux-3.18 (commit
5772e9a3463b "qdisc: bulk dequeue support for qdiscs
with TCQ_F_ONETXQUEUE"), it was constrained to some
specific qdiscs.
With some extra care, we can extend this to all qdiscs,
so that typical traffic shaping solutions can benefit from
small batches (8 packets in this patch).
For example, HTB is often used on some multi queue device.
And bonding/team are multi queue devices...
Idea is to bulk-dequeue packets mapping to the same transmit queue.
This brings between 35 and 80 % performance increase in HTB setup
under pressure on a bonding setup :
1) NUMA node contention : 610,000 pps -> 1,110,000 pps
2) No node contention : 1,380,000 pps -> 1,930,000 pps
Now we should work to add batches on the enqueue() side ;)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: John Fastabend <john.r.fastabend@intel.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Florian Westphal <fw@strlen.de>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 22 Jun 2016 06:16:51 +0000 (23:16 -0700)]
net_sched: sch_htb: export class backlog in dumps
We already get child qdisc qlen, we also can get its backlog
so that class dumps can report it.
Also replace qstats by a single drop counter, but move it in
a separate cache line so that drops do not dirty useful cache lines.
Tested:
$ tc -s cl sh dev eth0
class htb 1:1 root leaf 3: prio 0 rate 1Gbit ceil 1Gbit burst
500000b cburst
500000b
Sent
2183346912 bytes
9021815 pkt (dropped
2340774, overlimits 0 requeues 0)
rate 1001Mbit 517543pps backlog
120758b 499p requeues 0
lended:
9021770 borrowed: 0 giants: 0
tokens: 9 ctokens: 9
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 22 Jun 2016 06:16:50 +0000 (23:16 -0700)]
net_sched: fq_codel: cache skb->truesize into skb->cb
Now we defer skb drops, it makes sense to keep a copy
of skb->truesize in struct codel_skb_cb to avoid one
cache line miss per dropped skb in fq_codel_drop(),
to reduce latencies a bit further.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 22 Jun 2016 06:16:49 +0000 (23:16 -0700)]
net_sched: drop packets after root qdisc lock is released
Qdisc performance suffers when packets are dropped at enqueue()
time because drops (kfree_skb()) are done while qdisc lock is held,
delaying a dequeue() draining the queue.
Nominal throughput can be reduced by 50 % when this happens,
at a time we would like the dequeue() to proceed as fast as possible.
Even FQ is vulnerable to this problem, while one of FQ goals was
to provide some flow isolation.
This patch adds a 'struct sk_buff **to_free' parameter to all
qdisc->enqueue(), and in qdisc_drop() helper.
I measured a performance increase of up to 12 %, but this patch
is a prereq so that future batches in enqueue() can fly.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 25 Jun 2016 16:08:41 +0000 (12:08 -0400)]
Merge branch 'liquidio-next'
Raghu Vatsavayi says:
====================
liquidio: updates and bug fixes
Please consider following patch series for liquidio bug fixes
and updates on top of net-next. Following patches should be
applied in the following order as some of them depend on
earlier patches in the series.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Raghu Vatsavayi [Wed, 22 Jun 2016 05:53:15 +0000 (22:53 -0700)]
liquidio: ddr timeout
Adds support for ddr_timeout during device init.
Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com>
Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com>
Signed-off-by: Raghu Vatsavayi <rvatsavayi@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Raghu Vatsavayi [Wed, 22 Jun 2016 05:53:14 +0000 (22:53 -0700)]
liquidio: Support priv flag
This patch adds support for private flags for the driver.
Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com>
Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com>
Signed-off-by: Raghu Vatsavayi <rvatsavayi@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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