Initialize dev_port with port number (0 based) to be accessed through
sysfs from user space.
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When running in a kdump kernel, disable TPA. This saves memory, which
tends to be scarce in kdump.
TPA, being a receive acceleration, is unlikely to be useful for kdump,
whose purpose is to send the memory image out.
This saves additional 5 MB in the kdump environment.
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When running in a kdump kernel, make sure to use only a single ethernet
queue even if a num_queues option in /etc/modprobe.d/*.conf would specify
otherwise. This saves memory, which tends to be scarce in kdump.
This saves about 40 MB in the kdump environment on a setup with
num_queues=8 in the config file.
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use the clamp() macro to make the calculation of the number of queues
slightly easier to understand. It also avoids a crash when someone
accidentally passes a negative value in num_queues= module parameter.
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
bh_lock spinlock is unused, remove it from the private driver structure.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This code is commented since it is unused, left-over from the very first
time this driver was merged.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Drop all the checks on priv->phydev since we will refuse probing the
driver if we cannot attach to a PHY device. Drop all checks on
priv->phydev. This also fixes some smatch issues reported by Dan
Carpenter.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Programming the interrupt coalescing (IC) registers while
the controller/DMA is on may incur the loss of one Tx
confirmation interrupt, under certain conditions. This is
a subtle hw race because it does not occur during a burst
of Tx packets. It has been observed on p2020 devices that,
if just one packet is being xmit'ed, the Tx confirmation
doesn't trigger and BQL evetually blocks the Tx queues,
followed by Tx timeout and an un-responsive device.
This issue was not apparent prior to introducing BQL
support, as a late Tx confirmation was not an issue back then
and the next burst of Tx frames would have triggered the
Tx confirmation/ Tx ring cleanup anyway.
Bottom line, the hw specifications state that the IC registers
should not be programmed while the Rx/Tx blocks (the DMA) are
enabled. Further more, these registers are currently re-written
with the same values on the processing path, over and over again.
To fix this, rewriting the IC registers has been removed from
the processing path (napi poll). A complete MAC reset procedure
has been implemented for the ethtool -c option instead, to
reliably update these registers while the controller is stopped.
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The device reset procedure, stop_gfar()/startup_gfar(), has
concurrency issues.
"Kernel access of bad area" oopses show up during Tx timeout
device reset or other reset cases (like changing MTU) that
happen while the interface still has traffic. The oopses
happen in start_xmit and clean_tx_ring when accessing tx_queue->
tx_skbuff which is NULL. The race comes from de-allocating the
tx_skbuff while transmission and napi processing are still
active. Though the Tx queues get temoprarily stopped when Tx
timeout occurs, they get re-enabled as a result of Tx congestion
handling inside the napi context (see clean_tx_ring()). Not
disabling the napi during reset is also a bug, because
clean_tx_ring() will try to access tx_skbuff while it is being
de-alloc'ed and re-alloc'ed.
To fix this, stop_gfar() needs to disable napi processing
after stopping the Tx queues. However, in order to prevent
clean_tx_ring() to re-enable the Tx queue before the napi
gets disabled, the device state DOWN has been introduced.
It prevents the Tx congestion management from re-enabling the
de-congested Tx queue while the device is brought down.
An additional locking state, RESETTING, has been introduced
to prevent simultaneous resets or to prevent configuring the
device while it is resetting.
The bogus 'rxlock's (for each Rx queue) have been removed since
their purpose is not justified, as they don't prevent nor are
suited to prevent device reset/reconfig races (such as this one).
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Resetting the device (stop_gfar()/startup_gfar()) should
be fast and to the point, in order to timely recover
from an error condition (like Tx timeout) or during
device reconfig. The irq free/ request routines are just
redundant here, and they should be part of the device
close/ open routines instead.
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The RCTRL and TCTRL registers should not be changed
on-the-fly, while the controller is running, otherwise
unexpected behaviour occurs. But that's exactly what
gfar_vlan_mode() does, updating the VLAN acceleration
bits inside RCTRL/TCTRL. The attempt to lock these
operations doesn't help, but only adds to the confusion.
There's also a dependency for Rx FCB insertion (activating
/de-activating the TOE offload block on Rx) which might
change the required rx buffer size. This makes matters
worse as gfar_vlan_mode() ends up calling gfar_change_mtu(),
though the MTU size remains the same. Note that there are
other situations that may affect the required rx buffer size,
like changing RXCSUM or rx hw timestamping, but errorneously
the rx buffer size is not recomputed/ updated in the process.
To fix this, do the vlan updates properly inside the MAC
reset and reconfiguration procedure, which takes care of
the rx buffer size dependecy and the rx TOE block (PRSDEP)
activation/deactivation as well (in the correct order).
As a consequence, MTU/ rx buff size updates are done now
by the same MAC reset and reconfig procedure, so that out
of context updates to MAXFRM, MRBLR, and MACCFG inside
change_mtu() are no longer needed. The rx buffer size
dependecy to Rx FCB is now handled for the other cases too
(RXCSUM and rx hw timestamping).
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The main MAC config registers like: RCTRL/TCTRL, MRBLR,
MAXFRM, RXIC/TXIC, most fields of MACCFG1/2, should not
be changed on-the-fly, but at least after stopping the
DMA and disabling the Rx/Tx blocks and, for increased
reliability, after a MAC soft reset.
Impelement a complete MAC soft reset and reconfig procedure
following the latest HW advisories - gfar_mac_reset() - to
replace gfar_mac_init() and (the confusing) init_registers()
functions.
Factor out separate config functions for RCTRL and TCTRL,
insure programming order of the relevant config regs after
MAC soft reset.
Split gfar_hw_init() into gfar_mac_reset() and the remaining
global regs that don't need to be reconfigured after MAC soft
reset (FIFOCFG, ATTRELI, HW counters a.s.o).
As gfar_hw_init() now makes all the register writes @probe()
time, based on all the device flags and config options, it
must be moved further down, just before register_netdev(),
as the last config step when the config values are comitted
to HW. Also, move netif_carrier_off() after register_netdev(),
because it has no effect if called before.
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
According to Documentation/driver-model/devres.txt, devm_request_and_ioremap()
is deprecated, so use devm_ioremap_resource() instead.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ethtool speed values are just numbers of megabits and there is no need
to add SPEED_40000. To be consistent, use integer constants directly
for all speeds.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Adapter allows vlan0 traffic in case of SR-IOV after setting
QLC_SRIOV_ALLOW_VLAN0 bit even though we do not add vlan0 filters.
Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Qlogic application interface in the driver which has larger than 8 vNIC
configuration support has been updated to handle the following cases:
o Only 8 or lower total vNICs were enabled within the vNIC 0-7 range
o vNICs were enabled in the vNIC 0-15 range such that enabled vNICs were
not contiguous and only 8 or lower number of total VNICs were enabled
o Disconnect in the vNIC mapping between application and driver when the
enabled VNICs were dis contiguous
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Treat firmware minidump template headers for 82xx and 83xx/84xx adapters separately,
as it may change for 82xx and 83xx/84xx adapter type independently.
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This fix a performance bug introduced by commit 90b1ebe "mlx4: set
maximal number of default RSS queues", which limits the numbers of IRQs
opened by core module.
The limit should be on the number of queues in the indirection table -
rx_rings, and not on the number of IRQ's. Also, limiting on mlx4_core
initialization instead of in mlx4_en, prevented using "ethtool -L" to
utilize all the CPU's, when performance mode is prefered, since limiting
this number to 8 reduces overall packet rate by 15%-50% in multiple TCP
streams applications.
For example, after running ethtool -L <ethx> rx 16
Packet rate
Before the fix 897799
After the fix 1142070
Results were obtained using netperf:
S=200 ; ( for i in $(seq 1 $S) ; do ( \
netperf -H 11.7.13.55 -t TCP_RR -l 30 &) ; \
wait ; done | grep "1 1" | awk '{SUM+=$6} END {print SUM}' )
CC: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
mlx4_en_add() is too long.
Moving set number of RX rings to a utiltity function to improve
readability and modulization of the code.
Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix inconsistent use of MSIX and MSI-X in messages.
Change-ID: Iae9ffb42819677c34544719044ed77632e06147d
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Change the do/while to a for loop, so we don't hit the delay each
time, even when the register is ready for action.
Don't bother to set or clear the QENA_STAT bit as it is
read-only.
Change-ID: Ie464718804dd79f6d726f291caa9b0c872b49978
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ain't nothing gonna break my stride, nobody's gonna slow me down,
oh no. I got to keep on moving.
This was originally put in for debugging just-in-case purposes
and never removed.
Change-ID: Ic12c2e179c3923f54e6ba0a9e4ab05d25c3bab29
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove a bogus space.
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A bunch of changes merit a new version number, and since these were
made in the new year, update the copyright date.
Change-ID: Ic3f282bf0c20679b9fb06860211afa7c78055bc2
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Keep the descriptor ring size in the actual ring structs instead of in
the adapter struct. This enables us to use common tx and rx code with
the i40e PF driver.
Also update copyrights.
Change-ID: I2861e599b2b4c76441c062ea14400f4750f54d0e
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We don't need to set an interface name here; the net core will do
that, and then it will get renamed by udev anyway.
Change-ID: I839a17837d19bedd1f490bff32ac5b85b4bfd97f
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This comment is simply not true.
Change-ID: If006b02b60984601a24257a951ae873dff568008
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sure errors are reported at the correct log level, quit printing
the function name every time, and make the messages more consistent in
format.
v2: Removed unnecessary periods and redundant OOM message.
Change-ID: I50e443467519ad3850def131d84626c50612c611
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
PCI DAC doesn't really mean much on a virtualized PCI Express part, so
get rid of that check and just always set the HIGHDMA flag in the net
device.
Change-ID: I2040272be0e7934323f470c2bc73fbdd4f93e2b6
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Depending upon the state of the driver, there are several potential
pitfalls on remove. Kill the watchdog task so rmmod doesn't hang.
Check the adapter->msix_entries field, not the num_msix_vectors field,
which is never cleared.
Change-ID: I0546048477f09fc19e481bd37efa30daae4faa88
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We remove all the MAC filters, so remove the VLAN filters, too.
Change-ID: I4f7559acdf005dc3f359bf6460ce32d183c8878b
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If the kernel watchdog bites us, ask the PF to reset us and attempt to
reinit the driver.
Change-ID: Ic97665aeeed71ce712b9c4f057e78ff8372522b9
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The pci_map_single calls never checked for error. Add error checking
as requested by someone last year. Tested on 79c972.
Signed-off-by: Don Fry <pcnet32@frontier.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
pcnet32_realloc_rx_ring() only worked on the first log2 number of
entries in the receive ring instead of the all the entries.
Replaced "1 << size" with more descriptive variable.
This is my original bug from 2006. Found while testing another problem.
Tested on 79C972 and 79C976.
Signed-off-by: Don Fry <pcnet32@frontier.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Conflicts:
drivers/net/bonding/bond_3ad.h
drivers/net/bonding/bond_main.c
Two minor conflicts in bonding, both of which were overlapping
changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from David Miller:
1) kvaser CAN driver has fixed limits of some of it's table, validate
that we won't exceed those limits at probe time. Fix from Olivier
Sobrie.
2) Fix rtl8192ce disabling interrupts for too long, from Olivier
Langlois.
3) Fix botched shift in ath5k driver, from Dan Carpenter.
4) Fix corruption of deferred packets in TIPC, from Erik Hugne.
5) Fix newlink error path in macvlan driver, from Cong Wang.
6) Fix netpoll deadlock in bonding, from Ding Tianhong.
7) Handle GSO packets properly in forwarding path when fragmentation is
necessary on egress, from Florian Westphal.
8) Fix axienet build errors, from Michal Simek.
9) Fix refcounting of ubufs on tx in vhost net driver, from Michael S
Tsirkin.
10) Carrier status isn't set properly in hyperv driver, from Haiyang
Zhang.
11) Missing pci_disable_device() in tulip_remove_one), from Ingo Molnar.
12) AF_PACKET qdisc bypass mode doesn't adhere to driver provided TX
queue selection method. Add a fallback method mechanism to fix this
bug, from Daniel Borkmann.
13) Fix regression in link local route handling on GRE tunnels, from
Nicolas Dichtel.
14) Bonding can assign dup aggregator IDs in some sequences of
configuration, fix by making the allocation counter per-bond instead
of global. From Jiri Bohac.
15) sctp_connectx() needs compat translations, from Daniel Borkmann.
16) Fix of_mdio PHY interrupt parsing, from Ben Dooks
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (62 commits)
MAINTAINERS: add entry for the PHY library
of_mdio: fix phy interrupt passing
net: ethernet: update dependency and help text of mvneta
NET: fec: only enable napi if we are successful
af_packet: remove a stray tab in packet_set_ring()
net: sctp: fix sctp_connectx abi for ia32 emulation/compat mode
ipv4: fix counter in_slow_tot
irtty-sir.c: Do not set_termios() on irtty_close()
bonding: 802.3ad: make aggregator_identifier bond-private
usbnet: remove generic hard_header_len check
gre: add link local route when local addr is any
batman-adv: fix potential kernel paging error for unicast transmissions
batman-adv: avoid double free when orig_node initialization fails
batman-adv: free skb on TVLV parsing success
batman-adv: fix TT CRC computation by ensuring byte order
batman-adv: fix potential orig_node reference leak
batman-adv: avoid potential race condition when adding a new neighbour
batman-adv: properly check pskb_may_pull return value
batman-adv: release vlan object after checking the CRC
batman-adv: fix TT-TVLV parsing on OGM reception
...
With the introduction of the support for Armada 375 and Armada 38x,
the hidden Kconfig option MACH_ARMADA_370_XP is being renamed to
MACH_MVEBU_V7. Therefore, the dependency that was used for the mvneta
driver can no longer work. This commit replaces this dependency by a
dependency on PLAT_ORION, which is used similarly for the mv643xx_eth
driver.
In addition to this, it takes this opportunity to adjust the
description and help text to indicate that the driver can is also used
for Armada 38x. Note that Armada 375 cannot use this driver as it has
a completely different networking unit, which will require a separate
driver.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
If napi is left enabled after a failed attempt to bring the interface
up, we BUG:
fec 2188000.ethernet eth0: no PHY, assuming direct connection to switch
libphy: PHY fixed-0:00 not found
fec 2188000.ethernet eth0: could not attach to PHY
------------[ cut here ]------------
kernel BUG at include/linux/netdevice.h:502!
Internal error: Oops - BUG: 0 [#1] SMP ARM
...
PC is at fec_enet_open+0x4d0/0x500
LR is at __dev_open+0xa4/0xfc
Only enable napi after we are past all the failure paths.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support of the device tree probing for the Renesas SH-Mobile SoCs
documenting the device tree binding as necessary.
This work is loosely based on the original patch by Nobuhiro Iwamatsu
<nobuhiro.iwamatsu.yj@renesas.com>.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
checkpatch.pl clean-up, from 14 error/ 277 warnings, to 0 errors, 7 warnings
Signed-off-by: Justin van Wijngaarden <justinvanwijngaarden@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Also, modify is_eth_imm() to return header length so it doesn't
have to be recomputed in calc_tx_flits().
Based on original work by Mike Werner <werner@chelsio.com>
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove unused registers for registers list, and add missing ones
Based on original work by Santosh Rastapur <santosh@chelsio.com>
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Query firmware to see whether we're allowed to use T5 ULPTX MEMWRITE DSGL
capabilities. Also pass that information to Upper Layer Drivers via the
new (struct cxgb4_lld_info).ulptx_memwrite_dsgl boolean.
Based on original work by Casey Leedom <leedom@chelsio.com>
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
