We need to clear the private data pointer in the PCI device.
Also reorder cleanup in efx_pci_remove() for symmetry.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
efx_nic_fatal_interrupt() disables DMA before scheduling a reset.
After this, we need not and *cannot* flush queues.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
If RSS is disabled on the PF (efx->n_rx_channels == 1) we try to set
up the indirection table so that VFs can use it, setting
efx->rss_spread = efx_vf_size(efx). But if SR-IOV was disabled at
compile time, this evaluates to 0 and we end up dividing by zero when
initialising the table.
I considered changing the fallback definition of efx_vf_size() to
return 1, but its value is really meaningless if we are not going to
enable VFs. Therefore add a condition of efx_sriov_wanted(efx) in
efx_probe_interrupts().
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
During probe of each port, read and log the part number from VPD.
Remove the Falcon-specific board name lookup.
Initial version by Stuart Hodgson <smhodgson@solarflare.com>.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Generate a test event on each event queue whenever the interface is
brought up, then after 1 second check that we have either handled a
test event or handled another IRQ for each event queue.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
RX and TX completions on the same event queue are generally not associated
with the same flows. The inclusion of TX completions in the adaptive IRQ
score is more of a source of noise rather than useful feedback. Therefore,
do not include them in the score, and adjust the default threshold scores
down.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Unify return value of .ndo_set_mac_address if the given address
isn't valid. Return -EADDRNOTAVAIL as eth_mac_addr() already does
if is_valid_ether_addr() fails.
Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
We have a very simple way of allocating buffer table entries to
queues, which is just to take the next one available. The extra
channels are the highest numbered channels but they need to be
allocated the lowest entries so that the traffic channels can be
allocated new entries without any collisions.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
On the SFC9000 family, each port has 1024 Virtual Interfaces (VIs),
each with an RX queue, a TX queue, an event queue and a mailbox
register. These may be assigned to up to 127 SR-IOV virtual functions
per port, with up to 64 VIs per VF.
We allocate an extra channel (IRQ and event queue only) to receive
requests from VF drivers.
There is a per-port limit of 4 concurrent RX queue flushes, and queue
flushes may be initiated by the MC in response to a Function Level
Reset (FLR) of a VF. Therefore, when SR-IOV is in use, we submit all
flush requests via the MC.
The RSS indirection table is shared with VFs, so the number of RX
queues used in the PF is limited to the number of VIs per VF.
This is almost entirely the work of Steve Hodgson, formerly
shodgson@solarflare.com.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Each port has a block of 64-bit SRAM that is divided between buffer
table and descriptor cache regions at initialisation time. Currently
we use a fixed allocation, but it needs to be changed to support
larger numbers of queues.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This lets us identify the NIC affected in case of failure, and
will be necessary to adjust for SR-IOV constraints.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Abstract some of the channel operations to allow for 'extra'
channels that do not have RX or TX queues.
- Try to assign a channel to each extra channel type that is enabled
for the NIC, but gracefully degrade if we can't allocate sufficient
MSI-X vectors
- Allow each extra channel type to generate its own channel name
- Allow channel types to disable reallocation and reinitialisation
of their channels
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
When SR-IOV is enabled we may receive FLR (Function-Level Reset)
events, associated queue flush events and requests from VF drivers at
any time. Therefore we need to keep event queues and interrupts
enabled whenever possible.
Currently we stop interrupt-driven event processing before flushing RX
and TX queues; efx_nic_flush_queues() then polls event queues for
flush events and discards any others it finds. Change it to work with
the regular event handling functions.
Currently efx_start_channel() fills RX queues synchronously when a
device is brought up. This could now race with NAPI, so change it to
send fill events.
This was almost entirely written by Steve Hodgson, formerly
shodgson@solarflare.com.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Log an explicit warning if we are unable to create MTDs for a net
device. Also correct the comment about why mtd_device_register() may
fail; there is no longer an MTD table to fill up.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
If efx_pci_probe_main() schedules an INVISIBLE or ALL reset (but
nothing more drastic), we retry it up to 5 times. So far as I'm
aware, this was a workaround for bugs in Falcon A0 which were fixed
in production silicon. Remove the retry.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
The code in efx_process_channel() to update the RX queue after each
batch of RX completions works out as a no-op on a TX-only channel
where the RX queue structure is set to all-zeroes, but
(1) efx_channel_get_rx_queue() will BUG() if DEBUG is defined, and
(2) it's a waste of time.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Replace checksummed and discard booleans from efx_handle_rx_event()
with a bitmask, added to the flags field.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Rename efx_set_multicast_list() to efx_set_rx_mode(), in line
with the operation name net_device_ops::ndo_set_rx_mode.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
The out-of-tree version of the sfc driver used to run a self-test on
each device before registering it. Although this was never included
in-tree, some functions have checks for this special case which is not
really possible.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
We currently assume that the timer quantum for Siena is 5 us, the same
as for Falcon. This is not correct; timer ticks are generated on a
rota which takes a minimum of 768 cycles (each event delivery or other
timer change will delay it by 3 cycles). The timer quantum should be
6.144 or 3.072 us depending on whether turbo mode is active.
Replace EFX_IRQ_MOD_RESOLUTION with a timer_quantum_ns field in struct
efx_nic, initialised by the efx_nic_type::probe function.
While we're at it, replace EFX_IRQ_MOD_MAX with a timer_period_max
field in struct efx_nic_type.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Both implementations of efx_nic_type::reconfigure_mac operation
push the multicast hash filter to the hardware. It is therefore
redundant to call efx_nic_type::push_multicast_hash as well.
efx_mcdi_mac_reconfigure() also uses this operation, but the
implementation for Siena just uses MCDI anyway. Merge that into
efx_mcdi_mac_reconfigure().
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
No NICs need to switch efx_mac_operations at run-time, and the MAC
operations are fairly closely bound to NIC types.
Move efx_mac_operations::reconfigure to efx_nic_type::reconfigure_mac
and efx_mac_operations::check_fault fo efx_nic_type::check_mac_fault.
Change callers to call through efx->type or directly if the NIC type
is known.
Remove efx_mac_operations::update_stats. The implementations for
Falcon used to fetch MAC statistics synchronously and this was used by
efx_register_netdev() to clear statistics after running self-tests.
However, it now only converts statistics that have already been
fetched (and that only for Falcon), and the call from
efx_register_netdev() has no effect.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
efx_nic::stats_lock is used to serialise stats updates, but each
reader was dropping it before it finished reading efx_nic::mac_stats.
If there were concurrent stats reads using procfs, or one using procfs
and one using ethtool, an update could race with a read. On a 32-bit
system, the reader could see word-tearing of 64-bit stats (32 bits of
the old value and 32 bits of the new).
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
By the time we look at the MAC address in efx_probe_port(), either the
driver or the firmware has already validated the board configuration.
The possibility of having an invalid MAC address just isn't worth
considering. It certainly isn't worth having a compile-time option
for this.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
The previous default of per-package can be more CPU-efficient, but
users generally seem to prefer per-core. It should also allow
accelerated RFS to direct packets more precisely, if IRQ affinity
is properly spread out.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This function returns the degree of parallelism wanted, which is not
necessarily the total number of channels we want to create.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Fix the following errors and warnings:
ERROR: trailing whitespace
ERROR: spaces required around that '=' (ctx:VxV)
WARNING: please, no space before tabs
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
All drivers that support modification of the RX flow hash indirection
table initialise it in the same way: RX rings are assigned to table
entries in rotation. Make that default policy explicit by having them
call a ethtool_rxfh_indir_default() function.
In the ethtool core, add support for a zero size value for
ETHTOOL_SRXFHINDIR, which resets the table to this default.
Partly-suggested-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Shreyas N Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The SFC9020/SFL9021 device IDs are only used in the device ID table,
where we can just as well use comments.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
v2: add couple missing conversions in drivers
split unexporting netdev_fix_features()
implemented %pNF
convert sock::sk_route_(no?)caps
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'next-rebase' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci:
PCI: Clean-up MPS debug output
pci: Clamp pcie_set_readrq() when using "performance" settings
PCI: enable MPS "performance" setting to properly handle bridge MPS
PCI: Workaround for Intel MPS errata
PCI: Add support for PASID capability
PCI: Add implementation for PRI capability
PCI: Export ATS functions to modules
PCI: Move ATS implementation into own file
PCI / PM: Remove unnecessary error variable from acpi_dev_run_wake()
PCI hotplug: acpiphp: Prevent deadlock on PCI-to-PCI bridge remove
PCI / PM: Extend PME polling to all PCI devices
PCI quirk: mmc: Always check for lower base frequency quirk for Ricoh 1180:e823
PCI: Make pci_setup_bridge() non-static for use by arch code
x86: constify PCI raw ops structures
PCI: Add quirk for known incorrect MPSS
PCI: Add Solarflare vendor ID and SFC4000 device IDs
Add a range check, and move the check that RX and TX are consistent
from efx_ethtool_set_coalesce().
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The reported TX IRQ moderation is generated in a completely crazy way.
Make it simple and correct.
When channels are shared between RX and TX, TX IRQ moderation must be
the same as RX IRQ moderation, but must be specified as 0! Allow it
to be either specified as the same, or left at its previous value
in which case it will be quietly overridden.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Moves the Solarflare drivers into drivers/net/ethernet/sfc/ and
make the necessary Kconfig and Makefile changes.
CC: Steve Hodgson <shodgson@solarflare.com>
CC: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
