Examples of recoverable exceptions because of Tx error are:
- Tx descriptor PCI read error
- invalid Tx option descriptor
- Tx option descriptor not supported by the firmware variant
- unexpected Tx option descriptor (e.g. missing FATSO2A before
FATSO2B, missing FATSO2B after FATSO2A)
- incomplete packet push (CONT bit set in the latest pushed DMA
descriptor)
Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
Reviewed-by: Robert Stonehouse <rstonehouse@solarflare.com>
Examples of recoverable exceptions are:
- unexpected Rx event (Rx scatter abort with non-zero size,
too big Rx descriptors batch completed)
- Rx error due to invalid Rx descriptors push
- Rx error due to Rx descriptor read error (e.g. unmapped Rx ring
and denied by IOMMU)
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
Reviewed-by: Robert Stonehouse <rstonehouse@solarflare.com>
Since Rx scatter is not supported, all scattered packets are discarded.
It is not always possible to disable scatter on Huntington, so we
should handle scattered packets correctly in any case.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
These functions should set the queue state in dev->data->rx_queue_state
array.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Check that Rx mbuf pool, MTU and Rx scatter config are in sync.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Take Rx buffer start alignment and end-padding into account.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Timers cannot be used to implement periodic polling, since it implies
requirement on application to process timers in the main loop.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
The event queue is required for device level events (e.g. link status
change) and flush events.
Provide thread-safe function to poll the event queue since it may be
really done from different contexts.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Right now the code just logs the exception and sets flag to notify
subsequent event handlers and poller that recovery is required.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Resources required in accordance with configuration are
allocated only.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Manual link speed/duplex configuration is not supported yet.
Loopback is not supported yet.
Flow Director is not supported.
Link status change notification using interrupt is not supported yet.
Receive data notification using interrupts is not supported yet.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
The setup and configuration of the PMD is not performance sensitive,
but is not thread safe either. It is possible that the multiple
read/writes during PMD setup and configuration could be corrupted
in a multi-thread environment. Since this is not performance
sensitive, the developer can choose to add their own layer to provide
thread-safe setup and configuration. It is expected that, in most
applications, the initial configuration of the network ports would be
done by a single thread at startup.
In the case of exception on the event queue, the event queue and
corresponding Rx/Tx queue should be restarted in the Rx/Tx queue
polling context. These operations require access to the device
control which should be serialized. The device level lock will do
the job.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Provide API to deal with licenses on SFN7xxx and SFN8xxx
family adapters.
EFSYS_OPT_LICENSING should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Provide API to read/write bootrom configuration from/to NVRAM.
EFSYS_OPT_BOOTROM should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Provide API to read/write PCI Vital Product Data.
EFSYS_OPT_VPD should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Provide API to work with NIC non-volatile memory. It is used
to update firmware, configure NIC including bootrom parameters,
manage licenses, store PCI Vital Product Data etc.
EFSYS_OPT_NVRAM should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
In packed stream mode, large buffers are provided to the NIC
into which many packets can be delivered. This reduces the
number of queue refills needed compared to delivering every
packet into a separate buffer.
EFSYS_OPT_RX_PACKED_STREAM should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_MON_MCDI should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_MON_STATS should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_LOOPBACK should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_RX_SCALE should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_RX_SCATTER should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_EV_PREFECT allows to enable event prefetching
when event queue is polled.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
MAC statistics are either periodically (if supported/requested)
or on-demand written to provided DMA-mapped memory.
If periodic update is not supported (e.g. for EF10 virtual
functions), it is the driver responsibility to handle it.
EFSYS_OPT_MAC_STATS should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_PHY_LED_CONTROL should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_PHY_STATS should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_PHY_FLAGS should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_QSTATS should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_BIST should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
EFSYS_OPT_DIAG should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
SFN8xxx is the second family based on EF10 architecture.
It has few differences from SFN7xxx adapters family.
EFSYS_OPT_MEDFORD should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
SFN7xxx is the first family based on EF10 architecture.
EFSYS_OPT_HUNTINGTON should be enabled to use it.
From Solarflare Communications Inc.
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
