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Commit 26c5f03 uses a new skb allocator to avoid the RFD overflow
issue.
But from debugging without datasheet, we found the error always
happen when the DMA RX address is set to 0x....fc0, which is very
likely to be a HW/silicon problem.
So one idea is instead of adding a new allocator, why not just
hitting the right target by avaiding the error-prone DMA address?
This patch will actually
* Remove the commit 26c5f03
* Apply rx skb with 64 bytes longer space, and if the allocated skb
has a 0x...fc0 address, it will use skb_resever(skb, 64) to
advance the address, so that the RX overflow can be avoided.
In theory this method should also apply to atl1c driver, which
I can't find anyone who can help to test on real devices.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=70761
Signed-off-by: Feng Tang <feng.tang@intel.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Tested-by: Ole Lukoie <olelukoie@mail.ru>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Configuring the PHY LED registers for the Marvell 88E1510 and others is
not possible, because regardless of the values in marvell,reg-init, it
is later overridden in m88e1121_config_aneg with a non-standard default.
This patch moves that default configuration to .config_init to allow
setting the LED configuration through marvell,reg-init in the device
tree, which should override said default if it exists.
Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
commit 5c86d97bcc1d ("ath10k: combine txrx and replenish task")
introduced deadlock while processing rx in order indication message
for qca6174 based devices. While merging replenish and txrx tasklets,
replenish task should be called out of htt rx ring locking since it
is also try to acquire the same lock.
Unfortunately this issue is not exposed by other solutions (qca988x,
qca99x0 & qca4019), as rx_in_ord_ind message is specific to qca6174
based devices. This patch fixes
=============================================
[ INFO: possible recursive locking detected ]
4.7.0-rc2-wt-ath+ #1353 Tainted: G E
---------------------------------------------
swapper/3/0 is trying to acquire lock:
(&(&htt->rx_ring.lock)->rlock){+.-...}, at: [<f8d7ef19>]
ath10k_htt_rx_msdu_buff_replenish+0x29/0x90 [ath10k_core]
but task is already holding lock:
(&(&htt->rx_ring.lock)->rlock){+.-...}, at: [<f8d82cab>]
ath10k_htt_txrx_compl_task+0x21b/0x250 [ath10k_core]
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(&htt->rx_ring.lock)->rlock);
lock(&(&htt->rx_ring.lock)->rlock);
*** DEADLOCK ***
May be due to missing lock nesting notation
1 lock held by swapper/3/0:
#0: (&(&htt->rx_ring.lock)->rlock){+.-...}, at: [<f8d82cab>]
ath10k_htt_txrx_compl_task+0x21b/0x250 [ath10k_core]
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=119151
Fixes: 5c86d97bcc1d ("ath10k: combine txrx and replenish task")
Reported-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
There is no reason to destroy channels that are destroyed while
cpdma_ctlr destroy. In this case no need to remember how much
channels where created and destroy them by one, as cpdma_ctlr
destroys all of them.
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 7f854420fbfe9d49afe2ffb1df052cfe8e215541
("phy: Add API for {un}registering an mdio device to a bus.")
broke PHY detection on this driver with a copy-paste bug:
The code is looking 32 times for a PHY at address 0.
Fixes ethernet on AMD DB1100/DB1500/DB1550 boards which have
their (autodetected) PHYs at address 31.
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit a2f27217e4e60e663b5b971b0ccb287a9548b04e.
I applied the wrong version of this.
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 7f854420fbfe9d49afe2ffb1df052cfe8e215541
("phy: Add API for {un}registering an mdio device to a bus.")
broke PHY detection on this driver with a copy-paste bug:
The code is looking 32 times for a PHY at address 0.
Fixes ethernet on AMD DB1100/DB1500/DB1550 boards which have
their (autodetected) PHYs at address 31.
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The code checks if the queue should be stopped because we are below the
threshold of free descriptors only to check if it should be started again.
If we do end up in a state where we are at the threshold limit, it makes
more sense to just stop the queue and wait for the next IRQ to trigger the
TX housekeeping again. There is no rush in enqueuing the next packet, it
needs to wait for all the others in the queue to be dispatched first
anyway.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current code unconditionally wakes up the queue at the end of each
tx_poll action. Change the code to only wake up the queues if any of
them have actually been stopped before.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The TX ring setup has an off by one error causing it to not utilise all
descriptors. This has the side effect that we need to reset the next
pointer at runtime to make it work. Fix the off by one and remove the
code fixing the ring at runtime.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
During stress testing, after reducing the threshold value, we have seen
TX timeouts that were caused by the watchdog_timeo value being too low.
Increase the value to 5 * HZ which is a value commonly used by many other
drivers.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The logic to calculate the threshold value for stopping the TX queue is
bad. Currently it will always use 1/2 of the rings size, which is way too
much. Set the threshold to MAX_SKB_FRAGS. This makes sure that the queue
is stopped when there is not enough room to accept an additional segment.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current code only disables those IRQs that we will later use. To
ensure that we have a predefined state, we really want to disable all IRQs.
Change the code to disable all IRQs to achieve this.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The QDMA engine can fail to update the register pointing to the next TX
descriptor if this bit does not get set in the QDMA configuration register.
Not setting this bit can result in invalid values inside the TX rings
registers which will causes TX stalls.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
There are two places inside mtk_poll_rx where rx_dropped is not being
incremented properly. Fix this by adding the missing code to increment
the counter.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The lookup of the tx_buffer in the error path inside mtk_tx_map() uses the
wrong descriptor pointer. This looks like a copy & paste error. Change the
code to use the correct pointer.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Scratch memory gets allocated in mtk_init_fq_dma() but the corresponding
code to free it is missing inside mtk_dma_free() causing a memory leak.
With this patch applied, we can run ifconfig up/down several thousand
times without any problems.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The code fails to check if the scratch memory was properly allocated. Add
this check and return with an error if the allocation failed.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We detected some problems using the smsc lan8720a in combination with
i.MX28 and tracked this down to commit 21009686662f ("net: phy: smsc: move
smsc_phy_config_init reset part in a soft_reset function")
With 2100968666 the generic soft reset is replaced by a specific function
which handles power down state correctly. But additionally the soft reset
itself got conditional and is therefore also only performed if the phy is
in power down state.
This patch keeps the conditional wake up from power down, but
re-introduces the unconditional soft reset using the generic soft reset
function.
It was tested on linux-4.1.25 and linux-4.7.0-rc2.
Signed-off-by: Manfred Schlaegl <manfred.schlaegl@ginzinger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
My cleanup in "iwlwifi: prepare for higher API/CAPA bits" accidentally
inverted a few tests - fix them.
Fixes: 859d914c8f5c ("iwlwifi: prepare for higher API/CAPA bits")
Reported-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The FW expect the driver to set the encryption algorithm type when
installing the IGTK key in the HW.
Currently when installing CMAC IGTK key we don't set the algorithm type
and as a result the FW fails to calculate the MIC of multicast management
frames.
Fix it.
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
We try to access sta before we check for IS_ERR_OR_NULL(), so we may
end up accessing a NULL pointer. To prevent that, move the conversion
from sta to mvm_sta below the check.
Fixes: b915c10174fb ("iwlwifi: mvm: add reorder buffer per queue")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The 16 seconds timeout we were using turned out to be too short.
Recalculations by system show that the total time in both bands should
be < 18.5 seconds, even in the slowest cases (e.g. DCM P2P with
DTIM=2). Rounding it up to 20 seconds for a bit more safety.
Fixes: 728e825f81b1 ("iwlwifi: mvm: add a scan timeout for regular scans")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The device emulation may send segCnt of 1 for LRO packets.
Signed-off-by: Shrikrishna Khare <skhare@vmware.com>
Signed-off-by: Jin Heo <heoj@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The dwmac4_set_umac_addr() takes a struct mac_device_info as
the first parameter, but is being passed a ioaddr instead from
dwmac4_set_filter(). Fix the warning/bug by changing the first
parameter.
drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c:159:46: warning: incorrect type in argument 1 (different address spaces)
drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c:159:46: expected struct mac_device_info *hw
drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c:159:46: got void [noderef] <asn:2>*ioaddr
Note, only compile tested this as do not have any
hardware with it in.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Blue flame is a latency enhancement feature that allows the driver to
write the packet data directly to the NIC's registers thus making the
read of the packet data from host memory redundant.
We maintain a quota for the blue flame which is reloaded whenever we
identify that the hardware is processing send requests and processes
them fast enough so by the time we post the next send request it was
able to process all the pending ones. This indicates that the hardware
is capable of processing more blue flame requests efficiently. The blue
flame quota is decremented whenever we send using blue flame.
The current code erroneously clears the budget if we did not use blue
flame for the current post send operation and we fix it here.
Fixes: 88a85f99e51f ('net/mlx5e: TX latency optimization to save DMA reads')
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current implementation copies the flow of ndo_stop instead of
calling it explicitly, Fixed it.
Fixes: 5fc7197d3a25 ("net/mlx5: Add pci shutdown callback")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Set the mc_promisc flag also in the case of adding new mc address to
existing allmulti vport.
Fixes: a35f71f27a61 ('net/mlx5: E-Switch, Implement promiscuous rx modes vf request handling')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In RoCE, the RDMA-CM needs the node guid to establish connection
between nodes.
Today, the node guid exposed to mlx5 Ethernet VFs is zero, therefore
RDMA-CM on the VF is broken.
Whenever the administrator sets a MAC for a VF, derive the node guid
from it and set it as well in the following way:
MAC: e4:1d:2d:b3:f4:01 -> node_guid: e4:1d:2d:ff:fe:b3:f4:01
Fixes: 77256579c6b43 ('net/mlx5: E-Switch, Introduce Vport...')
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Reorder vport enable flow to mark the vport as enabled before calling
the vport change handler which was modified to handle the case for
when vport is not enabled.
This fixes the case for when the PF netdev is open before sriov is
enabled, once sriov is enabled at esw_enable_vport,
esw_vport_change_handle_locked didn't read the PF context since it
thought the PF vport was not enabled.
When we enable the vport, arming for events is not required anymore,
since it's done on the vport change handle
Fixes: 586cfa7f1d58 ('net/mlx5: E-Switch, Use vport event handler for vport cleanup')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The mlx5 flow-steering API (mlx5_create_flow_table/group/rule) never
returns null pointer on error. Even if it was doing that, checking
for IS_ERR_OR_NULL(p) and then returning PTR_ERR(p) would have cause
bugs, since PTR_ERR(NULL) --> success, crash.
To make things more robust and protect against related future bugs,
convert all IS_ERR_OR_NULL checks on returned values to IS_ERR.
Fixes: 5742df0f7dbe ('net/mlx5: E-Switch, Introduce VST vport ingress/egress ACLs')
Fixes: 86d722ad2c3b ('net/mlx5: Use flow steering infrastructure for mlx5_en')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reported-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We must use kvfree() for something that could have been allocated with vzalloc(),
do that.
Fixes: 5742df0f7dbe ('net/mlx5: E-Switch, Introduce VST vport ingress/egress ACLs')
Fixes: 86d722ad2c3b ('net/mlx5: Use flow steering infrastructure for mlx5_en')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reported-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add missing capabilities check for E-Switch FDB and ACLs flow
tables before creating their namespace in flow steering.
Fixes: efdc810ba39d ('net/mlx5: Flow steering, Add vport ACL support')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Flow steering infrastructure is currently used only on link layer
ethernet, therefore the driver should initialize the flow steering
when the device link layer is ethernet.
In addition, add missing capability check before initializing the
namespace of NIC RX flow tables.
Fixes: 2530236303d9 ('net/mlx5_core: Flow steering tree initialization')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When we destroy the last flow table we need to update
the root_ft to NULL.
It fixes an issue for when the last flow table is destroyed
and recreated again, root_ft pointer will not be updated,
as a result traffic will be dropped.
Fixes: 2cc43b494a6c ('net/mlx5_core: Managing root flow table')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mask the reserved bits when reading the number of newly
created XRCD.
Fixes: e126ba97dba9 ('mlx5: Add driver for Mellanox Connect-IB adapters')
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When rtnl_fill_ifinfo() is called for a certain netdevice it queries its
various parameters such as switch id and physical port name. The
function might get called in an atomic context, which means the
underlying driver must not sleep during the query operation.
Don't query the device and sleep during ndo_get_phys_port_name(), but
instead store the needed parameters in port creation time.
Fixes: 2bf9a58675c5 ("mlxsw: spectrum: Add support for physical port names")
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>
When a port is created following a split / unsplit we need to map it to
the correct module and lane, enable it and then continue to initialize
its various parameters such as MTU and VLAN filters.
Under certain conditions, such as trying to split ports at the bottom
row of the front panel by four, we get firmware errors.
After evaluating this with the firmware team it was decided to alter the
split / unsplit flow, so that first all the affected ports are mapped,
then enabled and finally each is initialized separately.
Fix the split / unsplit flow by first mapping and enabling all the
affected ports. Newer firmware versions will support both flows.
Fixes: 18f1e70c4137 ("mlxsw: spectrum: Introduce port splitting")
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>
7000-series SFC NICs connected with an SFP+ module currently fail to
report any supported link speeds.
Reported-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Reviewed-by: Jarod Wilson <jarod@redhat.com>
Tested-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
trivial fix to spelling mistakes and add missing newline in pr_err
messages
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since both CTAG and STAG rx acceleration must be enabled together, we
only need to check one feature flag (NETIF_F_HW_VLAN_CTAG_RX) before
calling __vlan_hwaccel_put_tag().
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The hardware can only be set to strip or not strip both the VLAN CTAG and
STAG. It cannot strip one and not strip the other. Add logic to
bnxt_fix_features() to toggle both feature flags when the user is toggling
one of them.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Set the is_push flag in the software BD before the tx data is pushed to
the chip. It is possible to get the tx interrupt as soon as the tx data
is pushed. The tx handler will not handle the event properly if the
is_push flag is not set and it will crash.
Signed-off-by: Michael Chan <michael.chan@broadocm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This looks like a regression from commit c4cdf753ed42 ("ath10k: move
fw_features to struct ath10k_fw_file"), we were printing the features from a
wrong struct.
Fixes: c4cdf753ed42 ("ath10k: move fw_features to struct ath10k_fw_file")
Signed-off-by: Ben Greear <greearb@candelatech.com>
[kvalo@qca.qualcomm.com: improve commit log]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Since implementing VLAN filtering in commit 05cc5a39ddb74
("bnx2x: add vlan filtering offload") bnx2x refuses to add a VLAN while
the interface is down:
# ip link add link enp3s0f0 enp3s0f0_10 type vlan id 10
RTNETLINK answers: Bad address
and in dmesg (with bnx2x.debug=0x20):
bnx2x: [bnx2x_vlan_rx_add_vid:12941(enp3s0f0)]Ignoring VLAN
configuration the interface is down
Other drivers have no problem with this.
Fix this peculiar behavior in the following way:
- Accept requests to add/kill VID regardless of the device state.
Maintain the requested list of VIDs in the bp->vlan_reg list.
- If the device is up, try to configure the VID list into the hardware.
If we run out of VLAN credits or encounter a failure configuring an
entry, fall back to accepting all VLANs.
If we successfully configure all entries from the list, turn the
fallback off.
- Use the same code for reconfiguring VLANs during NIC load.
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Acked-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
brcmfmac
* add fallback RSSI report for devices that do not report per-chain values
* fix a null pointer derefence regression on PCIe full dongle devices
rtlwifi
* fix scheduling while atomic regression from commit 49f86ec21c01
MAINTAINERS
* add file patterns for wireless device tree bindings
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Merge tag 'wireless-drivers-for-davem-2016-06-04' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for 4.7
brcmfmac
* add fallback RSSI report for devices that do not report per-chain values
* fix a null pointer derefence regression on PCIe full dongle devices
rtlwifi
* fix scheduling while atomic regression from commit 49f86ec21c01
MAINTAINERS
* add file patterns for wireless device tree bindings
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
