RDMA/libocrdma: Adding the BSD license in copyright file

Since libocrdma is distributed with both GPLv2 and BSD
licenses, adding the BSD license text to the COPYING file.

Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>

RDMA/libocrdma: Update the AUTHORS file

Change the contents of AUTHORS to Broadcom Ltd

Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>

RDMA/libocrdma: Update libocrdma version string

Updated version string from 1.0.6 to 1.0.7

Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>

RDMA/libocrdma: Remove async-event hook from context ops

libocrdma is not doing anything fruitful in ocrdma_async_event()
thus this hook is not required for us. Removing it.

Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>

RDMA/libocrdma: Fix compile time warnings

This patch fixes couple of build warnings.

Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>

RDMA/libocrdma: Add user space support for RoCE-v2

RoCE-v2 is a recently added extension to original RoCE protocol
it uses UDP encapsulation to achieve routability of RoCE packets.

This patch avails RoCE-v2 for userland applications.

Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>

RDMA/libocrdma: update libocrdma version string

version string updated from 1.0.5 to 1.0.6

Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>

RDMA/libocrdma: Prevent CQ-Doorbell floods

Changing CQ-Doorbell(DB) logic to prevent DB floods, it is supposed to be
pressed only if any hw CQE is polled. If cq-arm was requested
previously then don't bother about number of hw CQEs polled and
arm the CQ.

Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>

RDMA/libocrdma: set vlan present bit for UD

This patch tells f/w about the presence of VLAN tag in
the AH being supplied to the QP.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma:sync qp-state with hw state

This patch sync up the QP state with the underlying h/w
QP state and reports the same to user application

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com>

RDMA/libocrdma: return error if destroy fails

If the destorying of any resource has failed at uverbs
command interface libocrdma should return the error code.

Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com>

RDMA/libocrdma: update libocrdma version string

version string updated from 1.0.4 to 1.0.5
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: return positive error codes

As per the standard practice if any faiulre encountered in the
library code, the library should return a positive error code
to the user.

A bug has been reported in a used case scenario of KVM migration
as well.

This patch fixs the return code problem.

Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com>

RDMA/libocrdma: update version string

1.0.3 updated to 1.0.4

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: fix library stack curruption

The library abi structures are not matching with the
upstream driver abi code. The mismatch is causing
stack curruption on some platforms while running
user application.

This patch has a fix for stack curruption.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: update version string

The version string is updated to 1.0.3

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: stop polling when SQ/RQ is empty

The cq polling logic was hitting an infinite loop while generating
flush completions for a torn down QP. This patch adds a check in
flush completion logic to detect SQ/RQ empty condition and stop
polling loop.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>

RDMA/libocrdma: do not allow RDMA on UD QP

As per IB compilance it is not allowed to post RDMA operations
on a UD QP. This patch is adding a compilance check and if any
violation is detected -EINVAL is returned.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Mitesh Ahuja <mitesh.ahuja@emulex.com>

RDMA/libocrdma: dont skip setting deffer_arm

ibv_request_notify_cq() when called for the first time ocrdma tries to skip
setting deffered_arm flag. This may lead CQ to an un-armed state thus, never
generating CQ event and leaving consumer in hung state.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: update the version string

updated the vesion string in configure.in

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: ROLLBACK patch to allow RDMA-REAM on DPP

This patch is to rollback the REMA READ WQE posting through DPP queue.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: Increment abi version count

Increment the driver/library abi version count.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: un-map cqe memory in destroy_cq

while calling detroy cq, the host memory used to hold CQEs
needs to be unmapped.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: Allow RDMA-READ posted on DPP

RDMA-READs can be posted on DPP QP to achive better latancies.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: eq overflow fix for library

EQ overflow avoidance fix for libocrdma. This go hand in hand with the
ocrdma patch to avoid EQ full in ocrdma driver.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: Fix corrupted ocrdma_abi.h

fixed ocrdma_abi.h, got corrupted while syncing up.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/libocrdma: formatting fix

formatting of the code is corrected where ever possible.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

RDMA/ocrdma: sync up libocrdma with upstream existing driver

The libocrdma code has been synced up with the linux-3.12 upstream kernel driver.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>

Added libocrdma files