There are cases like SRIOV where can get only one MSI-X vector
allocated for RoCE.  In that case we need to use the vector for both
data plane and control plane.  We need to use EQ create version V2.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Also increase MAX AH to 512.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Also get the max_srq value from query_config mailbox response.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

1)	Fix ocrdma_get_num_posted_shift for upto 128 QPs.
2)	Create for min of dev->max_wqe and requested wqe in create_qp.
3)	As part of creating ird queue, populate with basic header templates.
4)	Make sure all the DB memory allocated to userspace are page aligned.
5)	Fix issue in checking the mmap local cache.
6)	Some code cleanup.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

1) In post recv, don't ring the DB doorbell if the QP is in RTR state.
   Cache the DB calls, until the QP is moved to RTS state.
2) Add max_rd_sge support to dev->attr.
3) Code cleanup in alloc_pd path.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

1) Remove __packed for structures.
2) Align and pad all ABI structure to 64 bit boundaries
   instead of using __packed.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Remove QP state machine in ocrdma low-level driver and use on the core
IB stack's instead.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Remove redundant dev reference from structures:

1) ocrdma_cq.
2) ocrdma_ah.
3) ocrdma_hw_mr.
4) ocrdma_mw.
5) ocrdma_srq.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Code cleanup and remove redundant code:

1) redundant initialization removed
2) braces changed as per CodingStyle.
3) redundant checks removed
4) extra braces in return statements removed.
5) removed unused pd pointer from mr.
6) reorganized get_dma_mr()
7) fixed set_av() to return error on invalid sgid index.
8) reference to ocrdma_dev removed from struct ocrdma_pd.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

A grab bag of places which don't properly initialize stack data.  I
removed one place which cleared ".rsvd" because it's not needed now
that I have added a memset() earlier in the function.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

I'd like to remove rdma/ib_cache.h some day, so let's avoid
proliferating uses of it unnecessarily.
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Fix to return -ENOMEM in the alloc dma coherent error case instead of
0, as done elsewhere in this function.
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Reorg structures to better packing to avoid cacheline padding.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Fix post_send to set the bad_wr in error case.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Remove private macro ocrdma_err and replace with standard pr_err.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Use MCC_CREATE_EXT_V1 to create MCC_queue to receive RoCE events.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Remove use_cnt.  Rely on IB midlayer to keep track of the use count.
Signed-off-by: NNaresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Convert to the much saner new idr interface.
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Fix CQE expansion of unsignaled WQE -- don't expand the CQE when the
WQE index of the completed CQE matches with last pending WQE (tail) in
the queue.
Signed-off-by: NParav Pandit <parav.pandit@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

If CONFIG_VLAN_8021Q is not set, then vlan_dev_real_dev() just goes BUG(),
so we shouldn't call it unless we're actually dealing with a VLAN netdev.
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

It looks like one check was accidentally duplicated, and the other 3
checks were left out.  This was detected by scripts/coccinelle/tests/doubletest.cocci:

    drivers/infiniband/hw/ocrdma/ocrdma_verbs.c:895:6-54: duplicated argument to && or ||
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Instead of testing defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
Signed-off-by: NRoland Dreier <roland@purestorage.com>

We want to set attr->max_srq_sge to dev->attr.max_srq_sge, not to itself.

This was detected by Coverity (CID 709210).
Signed-off-by: NRoland Dreier <roland@purestorage.com>

The dev->sgid_tbl[] array is allocated in ocrdma_alloc_resources().
It has OCRDMA_MAX_SGID elements so the test here is off by one.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Fix RQ/SRQ error CQE polling.  Return error CQE to consumer for error
case which was not returned previously.
Signed-off-by: NParav Pandit <parav.pandit@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Fix max sge calculation for sq, rq, srq for all hardware types.
Signed-off-by: NMahesh Vardhamanaiah <mahesh.vardhamanaiah@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Fix code to read the max wqe and max rqe values from mailbox response.
Signed-off-by: NMahesh Vardhamanaiah <mahesh.vardhamanaiah@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

1. Fix reporting GID table addition events.
2. Enable vlan based GID entries only when VLAN is enabled at compile
   time (test CONFIG_VLAN_8021Q / CONFIG_VLAN_8021Q_MODULE).
Signed-off-by: NParav Pandit <parav.pandit@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

"make versioncheck" shows:

    drivers/infiniband/hw/ocrdma/ocrdma_main.c: 29 linux/version.h not needed.
    drivers/infiniband/hw/ocrdma/ocrdma_verbs.h: 31 linux/version.h not needed.
Signed-off-by: NDevendra Naga <devendra.aaru@gmail.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Signed-off-by: NParav Pandit <parav.pandit@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Correct queue free count math for SQ, RQ for all hardware type.
Update user-kernel ABI interface.
Signed-off-by: NParav Pandit <parav.pandit@emulex.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

When IPV6 is not enabled:

    ERROR: "register_inet6addr_notifier" [drivers/infiniband/hw/ocrdma/ocrdma.ko] undefined!
    ERROR: "unregister_inet6addr_notifier" [drivers/infiniband/hw/ocrdma/ocrdma.ko] undefined!

Fix this by wrapping the inet6 calls in #ifdef IPV6.  Also make the
ocrdma module depend on (IPV6 || IPV6=n) to forbid the case of modular
ipv6 but built-in ocrdma (which can't work, because ocrdma calls ipv6
functions).
Reported-by: NRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

We only need to disable the IRQs one time.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>

[ Rename "wq_flags" to more conventional "flags."  - Roland ]
Signed-off-by: NRoland Dreier <roland@purestorage.com>

The ocrdma_alloc_lkey() function never returns NULL pointers -- it
returns ERR_PTRs.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Events sent to ocrdma_inet6addr_event() are sent from an atomic context,
therefore we can't try to lock a mutex within the notifier callback.

We could just switch the mutex to a spinlock since all it does it
protect a list, but I've gone ahead and switched the list to use RCU
instead.  I couldn't fully test it since I don't have IB hardware, so
if it doesn't fully work for some reason let me know and I'll switch
it back to using a spinlock.
Signed-off-by: NSasha Levin <levinsasha928@gmail.com>

[ Fixed locking in ocrdma_add().  - Roland ]
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Signed-off-by: NRoland Dreier <roland@purestorage.com>

We need to set ib_evt.device, or else ib_dispatch_event() will crash
when we call it for unaffiliated events (and consumers may get
confused in their QP/CQ/SRQ event handler for affiliated events).

Also fix sparse warning:

    drivers/infiniband/hw/ocrdma/ocrdma_hw.c:678:36: warning: Using plain integer as NULL pointer

There's no need to clear ib_evt, since every member is initialized.
Signed-off-by: NRoland Dreier <roland@purestorage.com>

Signed-off-by: NRoland Dreier <roland@purestorage.com>