Add sh_eth_{suspend|resume}() implementing {suspend|resume|freeze|thaw|poweroff|
restore}() PM methods to make it possible to restore from hibernation not only
in Linux  but also in e.g. U-Boot and  to have more determined state on resume/
restore.
Signed-off-by: NMikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
[Sergei: moved sh_eth_{suspend|resume}() before sh_eth_runtime_nop(), enclosed
them with #ifdef CONFIG_PM_SLEEP, reordered the local variables, got rid of
*goto* and label, reordered macro invocations, renamed, modified the changelog.]
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use SET_RUNTIME_PM_OPS() macro to initialize the runtime PM method pointers in
the 'struct dev_pm_ops'.
Signed-off-by: NMikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
[Sergei: renamed, added the changelog.]
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for Byte Queue Limits to the STMicro MAC driver.

Tested on a Amlogic S802 quad Cortex-A9 board, where the use of BQL
decreases the latency of a high priority ping from ~12ms to ~1ms when
the 100Mbit link is saturated by 20 TCP streams.
Signed-off-by: NBeniamino Galvani <b.galvani@gmail.com>
Reviewed-by: NEric Dumazet <edumazet@google.com>
Acked-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

commit b5a02f50 ("cxgb4 : Update ipv6 address handling api") introduced
a regression where unregister cxgb4_inet6addr_notifier wasn't getting called
during module_exit.
Signed-off-by: NHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

spin_event_timeout() is PPC dependent, use an arch independent
equivalent instead.
Signed-off-by: NShaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use ioread32be() & iowrite32be() instead.
Signed-off-by: NShaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In commit 5a7baa78 ("bonding: Advertize vxlan offload features when
supported"), Or Gerlitz added support conditional vxlan offload.

In this patch I also add support for all kind of tunnels,
but we allow a bonding device to not require segmentation,
as it is always better to make this segmentation at the very last stage,
if a particular slave device requires it.

Tested:

 Setup a GRE tunnel,
 on a physical NIC not having tx-gre-segmentation.
 Results on bnx2x are even better, as we no longer have to segment
 in software.

ethtool -K bond0 tx-gre-segmentation off

super_netperf 50 --google-pacing-rate 30000000 -H 10.7.8.152 -l 15
7538.32

ethtool -K bond0 tx-gre-segmentation on

super_netperf 50 --google-pacing-rate 30000000 -H 10.7.8.152 -l 15
10200.5
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Factor the interrupt disabling in a function: bcm_sf2_intr_disable()
since we are doing the same thing in the setup and suspend paths.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

fixed_phy_set_link_update() contains an early check against a NULL
callback pointer, which basically prevents us from removing any
previous callback we may have set. The users of the fp->link_update
callback deal with a NULL callback just fine, so we really want to allow
"removing" a link_update callback to avoid dangling callback pointers
during e.g: module removal.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When SRIOV commands are executed over the comm-channel and get
a fatal error (e.g. timeout, closing command failure) the VF enters
into error state and reset flow is activated.

To be able to recognize whether the failure was on a closing command, the
operational code for the given VHCR command is used. Once the device entered
into an error state we prevent redundant error messages from being printed.
Signed-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In SRIOV, both the PF and the VF may attempt device recovery whenever they
assume that the device is not functioning.  When the PF driver resets the
device, the VF should detect this and attempt to reinitialize itself.

The VF must be able to reset itself under all circumstances, even
if the PF is not responsive.

The VF shall reset itself in the following cases:

1. Commands are not processed within reasonable time over the communication channel.
This is done considering device state and the correct return code based on
the command as was done in the native mode, done in the next patch.

2. The VF driver receives an internal error event reported by the PF on the
communication channel. This occurs when the PF driver resets the device or
when VF is out of sync with the PF.

Add 'VF reset' capability, which allows the VF to reinitialize itself even when the
PF is not responsive.

As PF and VF may run their reset flow simulantanisly, there are several cases
that are handled:
- Prevent freeing VF resources upon FLR, when PF is in its unloading stage.
- Prevent PF getting VF commands before it has finished initializing its resources.
- Upon VF startup, check that comm-channel is online before sending
  commands to the PF and getting timed-out.
Signed-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix AER callbacks to work properly, it includes:
- Refractoring AER to be aligned with Reset flow support.
- Sync with concurrent catas flow.

In addition, fix the shutdown PCI callback to sync with
concurrent catas flow.
Signed-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We need to manage interface state to sync between reset flow and some other
relative cases such as remove_one. This has to be done to prevent certain
races. For example in case software stack is down as a result of unload call,
the remove_one should skip the unload phase.

Implement the remove_one case, handling AER and other cases comes next.

The interface can be up/down, upon remove_one, the state will include an extra
bit indicating that the device is cleaned-up, forcing other tasks to finish
before the final cleanup.
Signed-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We activate reset flow upon command fatal errors, when the device enters an
erroneous state, and must be reset.

The cases below are assumed to be fatal: FW command timed-out, an error from FW
on closing commands, pci is offline when posting/pending a command.

In those cases we place the device into an error state: chip is reset, pending
commands are awakened and completed immediately. Subsequent commands will
return immediately.

The return code in the above cases will depend on the command. Commands which
free and close resources will return success (because the chip was reset, so
callers may safely free their kernel resources). Other commands will return -EIO.

Since the device's state was marked as error, the catas poller will
detect this and restart the device's software stack (as is done when a FW
internal error is directly detected). The device state is protected by a
persistent mutex lives on its mlx4_dev, as such no need any more for the
hcr_mutex which is removed.
Signed-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This includes:

- resetting the chip when a fatal error is detected (the current code
  does not do this).

- exposing the ability to enter error state from outside the catas code
  by calling its functionality. (E.g. FW Command timeout, AER error).

- managing a persistent device state. This is needed to sync between
  reset flow cases.
Signed-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Using a WQ per device instead of a single global WQ, this allows
independent reset handling per device even when SRIOV is used.

This comes as a pre-patch for supporting chip reset
for both native and SRIOV.
Signed-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When an HCA enters an internal error state, this is detected by the driver.
The driver then should reset the HCA and restart the software stack.

Keep ports information and some SRIOV configuration in a persistent area
to have it valid across reset.
Signed-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Maintain a persistent memory that should survive reset flow/PCI error.
This comes as a preparation for coming series to support above flows.
Signed-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Call hex2bin() library function instead of doing conversion here.
Signed-off-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Call hex2bin() library function, instead of doing conversion here.
Signed-off-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: NOliver Neukum <oneukum@suse.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In the vxlan transmit path there is no need to reference the socket
for a tunnel which is needed for the receive side. We do, however,
need the vxlan_dev flags. This patch eliminate references
to the socket in the transmit path, and changes VXLAN_F_UNSHAREABLE
to be VXLAN_F_RCV_FLAGS. This mask is used to store the flags
applicable to receive (GBP, CSUM6_RX, and REMCSUM_RX) in the
vxlan_sock flags.
Signed-off-by: NTom Herbert <therbert@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The UDP tunnel transmit functions udp_tunnel_xmit_skb and
udp_tunnel6_xmit_skb include a socket argument. The socket being
passed to the functions (from VXLAN) is a UDP created for receive
side. The only thing that the socket is used for in the transmit
functions is to get the setting for checksum (enabled or zero).
This patch removes the argument and and adds a nocheck argument
for checksum setting. This eliminates the unnecessary dependency
on a UDP socket for UDP tunnel transmit.
Signed-off-by: NTom Herbert <therbert@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Enable kernel config "CONFIG_HAVE_DMA_API_DEBUG", FEC have kernel warning:
[    6.650444] fec 2188000.ethernet: DMA-API: device driver tries to free DMA memory it has not allocated
[    6.664289] Modules linked in:
[    6.667378] CPU: 0 PID: 3 Comm: ksoftirqd/0 Not tainted 3.19.0-rc4-00688-g88340160-dirty #150
[    6.675841] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[    6.681698] Backtrace:
[    6.684189] [<80011e3c>] (dump_backtrace) from [<80011fdc>] (show_stack+0x18/0x1c)
[    6.691789]  r6:80890154 r5:00000000 r4:00000000 r3:00000000
[    6.697533] [<80011fc4>] (show_stack) from [<806d2d88>] (dump_stack+0x80/0x9c)
[    6.704799] [<806d2d08>] (dump_stack) from [<8002a4e4>] (warn_slowpath_common+0x7c/0xb4)
[    6.712917]  r5:00000445 r4:00000000
[    6.716544] [<8002a468>] (warn_slowpath_common) from [<8002a5c0>] (warn_slowpath_fmt+0x38/0x40)
[    6.725265]  r8:809a2ee8 r7:00000000 r6:00000000 r5:00000000 r4:00000042
[    6.732087] [<8002a58c>] (warn_slowpath_fmt) from [<802d6268>] (check_unmap+0x86c/0x98c)
[    6.740202]  r3:808c79bc r2:8089060c
[    6.743826] [<802d59fc>] (check_unmap) from [<802d65e4>] (debug_dma_unmap_page+0x80/0x88)
[    6.752029]  r10:00000000 r9:00000000 r8:00000000 r7:00000001 r6:be12a410 r5:00000000
[    6.759967]  r4:00000042
[    6.762538] [<802d6564>] (debug_dma_unmap_page) from [<80440248>] (fec_enet_rx_napi+0x7ec/0xb9c)
[    6.771345]  r7:00000400 r6:be3e4000 r5:bf08fa20 r4:be036000
[    6.777094] [<8043fa5c>] (fec_enet_rx_napi) from [<8056ae24>] (net_rx_action+0x134/0x324)
[    6.785297]  r10:be089e60 r9:80998180 r8:ffff8d68 r7:0000012c r6:00000040 r5:00000001
[    6.793239]  r4:be036718
[    6.795801] [<8056acf0>] (net_rx_action) from [<8002db24>] (__do_softirq+0x138/0x2d0)
[    6.803655]  r10:00000003 r9:00000003 r8:80996378 r7:8099c080 r6:00000100 r5:8099c08c
[    6.811593]  r4:00000000
[    6.814157] [<8002d9ec>] (__do_softirq) from [<8002dd00>] (run_ksoftirqd+0x44/0x5c)
[    6.821836]  r10:00000000 r9:00000000 r8:809b133c r7:00000000 r6:00000001 r5:00000000
[    6.829775]  r4:be027e80
[    6.832346] [<8002dcbc>] (run_ksoftirqd) from [<80048290>] (smpboot_thread_fn+0x154/0x1c4)
[    6.840649] [<8004813c>] (smpboot_thread_fn) from [<80044780>] (kthread+0xdc/0xf8)
[    6.848224]  r10:00000000 r8:00000000 r7:8004813c r6:be027e80 r5:be027ec0 r4:00000000
[    6.856179] [<800446a4>] (kthread) from [<8000ebc8>] (ret_from_fork+0x14/0x2c)
[    6.863425]  r7:00000000 r6:00000000 r5:800446a4 r4:be027ec0
[    6.869156] ---[ end trace 861cf914d2461a8b ]---

There have one bug in .fec_enet_tx_queue() function to unmap the DMA memory:
For SG or TSO, get one buffer descriptor and then unmap the related DMA memory, and then
get the next buffer descriptor, loop to while() to check "TX_READY". If "TX_READY" bit
still __IS__ existed in the BD (The next fraglist or next TSO packet is not transmited
complitely), exit the current clean work. When the next work is triggered, it still repeat
above step with the same BD. The potential issue is that unmap the same DMA memory for
multiple times.

The patch fix the clean work for SG and TSO packet.
Reported-by: NAnand Moon <moon.linux@yahoo.com>
Reported-by: NChristian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When max_tx_rate is set via bw_max in the NIC resource desc, bw_min must be
set to 0.
Signed-off-by: NKalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Some FW cmd related definitions were included in be_hw.h
Signed-off-by: NVasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The Lancer FW is picky about requiring a function reset FW cmd as a part
of the initialization sequence.
Signed-off-by: NKalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds a log message in case of POST timeout in Lancer to
help debugging failure cases. It also logs sliport_status register value in
case of POST timeout.
Signed-off-by: NKalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The support for this exists only in skyhawk FW.
Signed-off-by: NKalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When the FW cmd to set flow control fails, the adapter state must simply
reflect the old values.
Signed-off-by: NKalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This removes a bit of duplication of code that initializes the en_flags.
Signed-off-by: NKalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently, dwmac-rk uses a custom propety "phy_regulator" to get the name of the
right regulator to use to power on or power off the phy. This commit converts the
driver to use phy-supply devicetree property and the corresponding API, it cleans
the code a bit and make it simpler to maintain. This also replaces the property
phy_regulator by the standard property phy-supply in rk3288-evb-rk808.dts.
Signed-off-by: NRomain Perier <romain.perier@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

As these settings can be directly expressed from devicetree for both fixed
regulators and pmic-integrated regulators, it is more standard to set them
from dts and let the regulator framework use the right voltage informations
when it is used in the driver.
Signed-off-by: NRomain Perier <romain.perier@gmail.com>
Tested-by: NHeiko Stuebner <heiko@sntech.de>
Reviewed-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Adds support to dump the rss table, rss_config, rss_key, rss_pf_config and
rss_vf_config
Signed-off-by: NHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Adds support to dump the contents of the flash in the adapter
Signed-off-by: NHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Always fully coalesce guest Rx packets into the minimum number of ring
slots.  Reducing the number of slots per packet has significant
performance benefits when receiving off-host traffic.

Results from XenServer's performance benchmarks:

                         Baseline    Full coalesce
Interhost VM receive      7.2 Gb/s   11 Gb/s
Interhost aggregate      24 Gb/s     24 Gb/s
Intrahost single stream  14 Gb/s     14 Gb/s
Intrahost aggregate      34 Gb/s     34 Gb/s

However, this can increase the number of grant ops per packet which
decreases performance of backend (dom0) to VM traffic (by ~10%)
/unless/ grant copy has been optimized for adjacent ops with the same
source or destination (see "grant-table: defer releasing pages
acquired in a grant copy"[1] expected in Xen 4.6).

[1] http://lists.xen.org/archives/html/xen-devel/2015-01/msg01118.htmlSigned-off-by: NDavid Vrabel <david.vrabel@citrix.com>
Acked-by: NIan Campbell <ian.campbell@citrix.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Netlink FDB messages are sent in the link netns. The header of these messages
contains the ifindex (ndm_ifindex) of the netdevice, but this ifindex is
unusable in case of x-netns vxlan.
I named the new attribute NDA_NDM_IFINDEX_NETNSID, to avoid confusion with
NDA_IFINDEX.
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Assign rtnl_link_ops->get_link_net() callback so that IFLA_LINK_NETNSID is
added to rtnetlink messages.
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Assign rtnl_link_ops->get_link_net() callback so that IFLA_LINK_NETNSID is
added to rtnetlink messages.
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Don't update Tx tail descriptor if queue hasn't been stopped
and we know at least one more skb will be sent right away.
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Don't update Tx tail descriptor if we queue hasn't been stopped and
we know at least one more skb will be sent right away.
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>