GRO is simpler to use than the old inet_lro library, and is compatible
with forwarding and bridging configurations.

Compile-tested only.
Signed-off-by: NBen Hutchings <ben@decadent.org.uk>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

No ULP uses it anymore, go ahead and remove it.
Signed-off-by: NSagi Grimberg <sagig@mellanox.com>
Acked-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Update copyright information in the source files.
Signed-off-by: NTatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: NFaisal Latif <Faisal.Latif@intel.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Support for Packed and Unaligned (PAU) FPDUs is needed for
interoperability between NES and non-NES nodes. When the NES hardware
detects a PAU frame, it will pass it to the driver to process the
frame.  NES driver creates a new frame for each FPDU and forwards it
to the hardware to be sent to its associated qp.
Signed-off-by: NTatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: NFaisal Latif <Faisal.Latif@intel.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

- unify vlan and nonvlan rx path
- kill nesvnic->vlan_grp and nes_netdev_vlan_rx_register
- allow to turn on/off rx/tx vlan accel via ethtool (set_features)
Signed-off-by: NJiri Pirko <jpirko@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NMichał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In case of SFP+ PHY, link status check at interrupt processing can
give false results.  For proper link status change detection a delayed
recheck is needed to give nes registers time to settle.  Add a
periodic link status recheck scheduled at interrupt to detect
potential delayed registers state changes.

Addresses: http://bugs.openfabrics.org/bugzilla/show_bug.cgi?id=2117Signed-off-by: NMaciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Depending on link state change, IB_EVENT_PORT_ERR or
IB_EVENT_PORT_ACTIVE should be generated when handling MAC interrupts.

Plugging in a cable happens to result in series of interrupts changing
driver's link state a number of times before finally staying at link
up (e.g. link up, link down, link up, link down, ..., link up).  To
prevent sending series of redundant IB_EVENT_PORT_ACTIVE and
IB_EVENT_PORT_ERR events, we use a timer to debounce them in
nes_port_ibevent().
Signed-off-by: NMaciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Changing state to CLOSING when FIN is received causes A0 cards to
hang.  Fix this by checking for A0 cards in FIN handling.
Signed-off-by: NFaisal Latif <faisal.latif@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Read and print eeprom version and save it off for later use.
Also delete a tab.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Clear the stall bit to drop any incoming packets while destroying NIC
QP.  This will prevent a chip resource leak.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Add support for KR device id 0x0110.  While at it, cleanup
nes_init_phy() by splitting it into nes_init_1g_phy() and
nes_init_2025_phy().

Remove support for NES_PHY_TYPE_IRIS, which was used on an XFP board
that was only manufactured in small quantities and given out for evals
in even smaller quantities.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Update copyright from Intel-NE, Inc. to Intel Corporation.  Use proper
branding string in Kconfig and simplify description.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Replace alloc_fmr, unmap_fmr, dealloc_fmr and map_phys_fmr with
alloc_fast_reg_mr, alloc_fast_reg_page_list, free_fast_reg_page_list.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

When an asynchronous event occurs that requires a terminate, it is
sometimes possible to identify the wqe in error.  This change uses
flush to get this information to the poll routine.  The flush
operation puts the status into the cqe.  If this information is not
available, it continues to use the more generic flush code as before.
Signed-off-by: NDon Wood <donald.e.wood@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Implement the sending and receiving of Terminate packets.
Signed-off-by: NDon Wood <donald.e.wood@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Add new register settings for new SFP+ PHY/firmware.
Add new PHY to to nes_netdev_get/set_settings.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

We have observed unstable link with a new BNT switch.

Add wide_ppm_offset parameter to allow the user to control the clock
ppm offset on the CX4 interface for better compatibility.  Default is
100ppm, setting it to 1 will increase it to 300ppm.  Change default
SerDes1 reference clock to external source.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

NETIF_F_LLTX is deprecated. Remove private TX locking from the driver
and remove the NETIF_F_LLTX feature flag.  This also fixes a warning
in some configs that comes from doing skb_linearize() call in the
hard_start_xmit method with IRQs disabled (if HIGHMEM is enabled,
skb_linearize() may end up enabling BHs, which is a no-no if hard IRQs
are disabled in that context).  By getting rid of LLTX, we do not
disable IRQs when skb_linearize() is called.

Remove the sq_lock as it is not needed for non-LLTX.  Fix ethtool not
to show the counter for sq_lock.

Reported-by: aluno3@poczta.onet.pl
Signed-off-by: NFaisal Latif <faisal.latif@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

When asynchronous events are processed by software, it is necessary
to let the hardware know that software has handled the event.  This
frees up the entry in the asynchronous event queue.
Signed-off-by: NDon Wood <donald.e.wood@intel.com>
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Update copyright to the new legal entity, Intel-NE, Inc., an Intel
company.  Update copyright for the new year.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Under heavy load, there is an compatibility issue regarding PCIe write
credits with certain chipsets.  It can be mitigated by limiting read
requests to 256 Bytes.

This workaround is always enabled for Tbird2 on Gladius.  We also add
a module parameter to enable workaround for non-Gladius cards.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Change management of perfect filter table to allow enhanced
performance applications.
Signed-off-by: NVadim Makhervaks <vmakhervaks@neteffect.com>
Signed-off-by: NSweta Bhatt <sweta.bhatt@einfochips.com>
Signed-off-by: NChien Tung <ctung@neteffect.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Mask off a critical error after 100 critical error interrupts to
keep the system "sane".
Signed-off-by: NSweta Bhatt <sweta.bhatt@einfochips.com>
Signed-off-by: NChien Tung <ctung@neteffect.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Add a module parameter wqm_quanta.  It controls the number of segments
transmitted at a time.
Signed-off-by: NSweta Bhatt <sweta.bhatt@einfochips.com>
Signed-off-by: NChien Tung <ctung@neteffect.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Add support for NetEffect 4 port 1G HP blade card.  The mapping
between physical port and MAC is different from the standup card.
Signed-off-by: NChien Tung <ctung@neteffect.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Every caller of nes_post_cqp_request() passed it NES_CQP_REQUEST_RING_DOORBELL,
so just remove that parameter and always ring the doorbell.
Signed-off-by: NRoland Dreier <rolandd@cisco.com>
Acked-by: NFaisal Latif <flatif@neteffect.com>

Various cleanups:
	- Change // to /* .. */
	- Place whitespace around binary operators.
	- Trim down a few long lines.
	- Some minor alignment formatting for better readability.
	- Remove some silly tabs.
Signed-off-by: NGlenn Streiff <gstreiff@neteffect.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

This patch enables the iw_nes module for NetEffect RNICs to support
additional PHYs including SFP+ (referred to as ARGUS in the code).
Signed-off-by: NEric Schneider <eric.schneider@neteffect.com>
Signed-off-by: NGlenn Streiff <gstreiff@neteffect.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Signed-off-by: Faisal Latif <flatif@neteffect.com.
Signed-off-by: NGlenn Streiff <gstreiff@neteffect.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Remove the volatile qualifier from the cq_vbase member of struct
nes_hw_cq, and add an rmb() in the one place where it looks like
access order might make a difference.  As usual, removing a volatile
qualifier in a declaration is actually a bug fix, since a volatile
qualifier is not sufficient to make sure that aggressively
out-of-order CPUs don't reorder things and cause incorrect results.

For example, a CPU might speculatively execute reads of other cqe
fields before the NIC hardware has written those fields and before it
has set the NES_CQE_VALID bit (even though those reads come after the
test of the NES_CQE_VALID bit in program order), but then when the CPU
actually executes the conditional test of the NES_CQE_VALID, the bit
has been set, and the CPU will proceed with the results of the earlier
speculative execution and end up using bogus data.

This also gets rid of the warning:

    drivers/infiniband/hw/nes/nes_verbs.c: In function 'nes_destroy_cq':
    drivers/infiniband/hw/nes/nes_verbs.c:1978: warning: passing argument 3 of 'pci_free_consistent' discards qualifiers from pointer target type
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Interrupt moderation low threshold value was incorrectly triggering,
indicating that the threshold should be lowered.

The impact was the timer was likely to become 40usecs and get stuck
there.  The biggest side effect was too many interrupts and nonoptimal
performance.
Signed-off-by: NJohn Lacombe <jlacombe@neteffect.com>
Signed-off-by: NGlenn Streiff <gstreiff@neteffect.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Add a standard NIC and RDMA/iWARP driver for NetEffect 1/10Gb ethernet adapters.
Signed-off-by: NGlenn Streiff <gstreiff@neteffect.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>