This reverts commit a3cd7d9070.
The original commit breaks iSER reliably, making it complain:
iser: iser_reg_page_vec:ib_fmr_pool_map_phys failed: -11
The FMR cleanup thread runs ib_fmr_batch_release() as dirty entries
build up. This commit causes clean but used FMR entries also to be
purged. During that process, another thread can see that there are no
free FMRs and fail, even though there should always have been enough
available.
Signed-off-by: Pete Wyckoff <pw@osc.edu>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
When a CM MAD is received, it is queued to a CM workqueue for
processing. The queued work item references the port and device on
which the MAD was received. If that device is removed from the system
before the work item can execute, the work item will reference freed
memory.
To fix this, flush the workqueue after unregistering to receive MAD,
and before the device is be freed.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland 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: John Lacombe <jlacombe@neteffect.com>
Signed-off-by: Glenn Streiff <gstreiff@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
With commit ef19454b ("[LIB] crc32c: Keep intermediate crc state in
cpu order"), the behavior of crc32c changes on big-endian platforms.
Our algorithm expects the previous behavior; otherwise we have RDMA
connection establishment failure on big-endian platforms like powerpc.
Apply cpu_to_le32() to value returned by crc32c() to get the previous
behavior.
Signed-off-by: Faisal Latif <flatif@neteffect.com>
Signed-off-by: Glenn Streiff <gstreiff@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Just delete the debugging statement so we don't use cqp_request after
freeing it. Adrian Bunk flagged this use-after-free issue spotted by
the Coverity checker.
Signed-off-by: Glenn Streiff <gstreiff@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Adrian Bunk pointed out that a Coverity scan found some apparently
dead code in nes_verbs.c that really shouldn't have been dead.
The function nes_create_cq() was missing the assignment
err = 1;
just prior to an iteration that conditionally set err = 0 if a PBL was
found for a given virtual CQ. I also noticed we should have been
returning -EFAULT on a couple related error paths.
Signed-off-by: Chien Tung <ctung@neteffect.com>
Signed-off-by: Glenn Streiff <gstreiff@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
A single entry (addr 0x10001000, size 0x2000) will get converted to
page address 0x10000000 with a page size of 0x4000. The code as it
stands doesn't address the single buffer case, but in fact it allows
the subsequent single-buffer special case to be eliminated entirely.
Because the mask now includes the (page adjusted) starting and ending
addresses, the general case works for the single buffer case as well.
Signed-off-by: Bryan Rosenburg <rosnbrg@us.ibm.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
When mthca_fmr_alloc() returns an error, it should free the MPT at the
index key, not mr->ibmr.lkey, since the lkey has been mangled by
hw_index_to_key() and no longer is the real index. This bug causes
corruption of the MPT table free bitmap when mthca_fmr_alloc() fails.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Commit efcd9971 ("IPoIB/cm: Factor out ipoib_cm_free_rx_reap_list()")
introduced a bug in ipoib_cm_dev_stop() when the receive drain times
out. In that case, the function moves all the pending rx stuff into a
private list but then calls ipoib_cm_free_rx_reap_list(), which
handles a different list.
Fix this by moving everything to the rx_reap_list that will actually
get freed up.
This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=906>.
Signed-off-by: Pradeep Satyanarayana <pradeeps@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
In nes_create_qp(), the test
if (nesqp->mmap_sq_db_index > NES_MAX_USER_WQ_REGIONS) {
is used to error out if the db_index is too large; however, if the
test doesn't trigger, then the index is used as
nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
and mmap_nesqp is declared as
struct nes_qp *mmap_nesqp[NES_MAX_USER_WQ_REGIONS];
which leads to an array overrun if the index is exactly equal to
NES_MAX_USER_WQ_REGIONS. Fix this by bailing out if the index is
greater than or equal to NES_MAX_USER_WQ_REGIONS.
This was spotted by the Coverity checker (CID 2162).
Acked-by: Glenn Streiff <gstreiff@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
We need to account for the VLAN header size in nes_netdev_change_mtu()
and nes_netdev_init(). Also, add spin lock/unlock during VLAN RX
registration so only one process can assign VLAN group for a given
interface at a time.
Signed-off-by: Chien Tung <ctung@neteffect.com>
Signed-off-by: Glenn Streiff <gstreiff@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Only mask out MAC interrupt if necessary and re-enable on ifup. There
could be multiple netdevs going through the same MAC. MAC interrupts
should not be masked off until the last netdev is downed.
Signed-off-by: Chien Tung <ctung@neteffect.com>
Signed-off-by: Glenn Streiff <gstreiff@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
If kobject_create_and_add() fails and returns NULL, the current code
in ib_device_register_sysfs() does not set ret and hence returns 0.
Set ret to -ENOMEM for this failure, so that the caller knows that
ib_device_register_sysfs() actually failed.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
There's an undesirable interaction with issuing MRA requests to
increase connection timeouts and the listen backlog.
When the rdma_cm receives a connection request, it queues an MRA with
the ib_cm. (The ib_cm will send an MRA if it receives a duplicate
REQ.) The rdma_cm will then create a new rdma_cm_id and give that to
the user, which in this case is the rdma_user_cm.
If the listen backlog maintained in the rdma_user_cm is full, it
destroys the rdma_cm_id, which in turns destroys the ib_cm_id. The
ib_cm_id generates a REJ because the state of the ib_cm_id has changed
to MRA sent, versus REQ received. When the backlog is full, we just
want to drop the REQ so that it is retried later.
Fix this by deferring queuing the MRA until after the user of the
rdma_cm has examined the connection request.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Currently mlx4_ib_fmr_alloc() calls mlx4_mr_enable() instead of
mlx4_fmr_enable(). The two functions are equivalent at the moment, but
this is not really correct (and the change is needed to fix a bug).
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
struct ipoib_cm_tx.ibwc is unused since commit 1b524963 ("IPoIB/cm:
Use common CQ for CM send completions"), so remove it.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
In P_Key event handling, if the old P_Key is no longer available, the
driver must call ipoib_ib_dev_stop() -- just as it does when the P_Key
is still available (see procedure __ipoib_ib_dev_flush()).
When a P_Key becomes available, the driver will perform ipoib_open(),
which assumes that the QP is in RESET, the cm_id has been
destroyed/deleted, etc. If ipoib_ib_dev_stop() is not called as
described above, then these assumptions will be false, and the attempt
to bring the interface up will fail.
Found by Mellanox QA.
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
replace:
big_endian_variable = cpu_to_beX(beX_to_cpu(big_endian_variable) +
expression_in_cpu_byteorder);
with:
beX_add_cpu(&big_endian_variable, expression_in_cpu_byteorder);
Generated with a semantic patch.
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
The cxgb3 HW and driver don't support loopback RDMA connections. So
fail any connection attempt where the destination address is local.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Commit 9af57b7a ("IB/cm: Add basic performance counters") introduced a
bug in how the reference count for cm_class.subsys.kobj was handled:
the path that released a device did a kobject_put() on that kobject, but
there was no kobject_get() in the path the handles adding a device. So
the reference count ended up too low, which leads to bad things. Fix up
and simplify the reference counting to avoid this.
(Actually, I introduced the bug when fixing the patch up to match some
of Greg's kobject changes, but who's counting)
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Pete Wyckoff
Sean Hefty
John Lacombe
Faisal Latif
Glenn Streiff
Adrian Bunk
Chien Tung
Bryan Rosenburg
Roland Dreier
Pradeep Satyanarayana
Li Zefan
Jack Morgenstein
Eli Cohen
Marcin Slusarz
Steve Wise