Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Add __init and __exit annotations to the module_init/module_exit
functions from drivers/infiniband/core/addr.c and cma.c.
Signed-off-by: NPeter Huewe <peterhuewe@gmx.de>
Acked-by: NSean Hefty <sean.hefty@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Increment version number for DMEM toleration.
Signed-off-by: NAlexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

dma_sync_single() is deprecated now, and the use in mthca is wrong:
there should be a dma_sync_single_for_cpu() before touching the memory
from the CPU, and a dma_sync_single_for_device() afterwards.  Fix
this, prompted by a kick in the pants from a patch from FUJITA
Tomonori <fujita.tomonori@lab.ntt.co.jp>.
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

During cluster testing, one QP was not closed, as FIN is not handled
properly when its rexmit count expires or in some cases when RST is is
received after sending FIN.  The reason is that the cm_id does not get
decremented under these conditions.
Signed-off-by: NFaisal Latif <faisal.latif@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

In nes_query_device(), max_qp_init_rd_atom is incorrectly set to
max_qp_wr.  This was found when a test application had a dapl async
event error.
Signed-off-by: NFaisal Latif <faisal.latif@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

This prevents the memcpy() of a guid_entries element using a negative index.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Implement toleration of dynamic memory operations and 16 GB gigantic
pages, where "toleration" means that the driver can cope with dynamic
memory operations that happen before the driver is loaded.  While the
ehca driver is loaded, dynamic memory operations are still prohibited
by returning NOTIFY_BAD from the memory notifier.

On module load the driver walks through available system memory,
checks for available memory ranges and then registers the kernel
internal memory region accordingly.  The translation of address ranges
is implemented via a 3-level busmap.
Signed-off-by: NHannes Hering <hering2@de.ibm.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device.  Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used.  These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.

Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: general@lists.openfabrics.org
Cc: Christoph Raisch <raisch@de.ibm.com>
Acked-by: NHoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device.  Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used.  These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.


Cc: general@lists.openfabrics.org
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

When both MSI-X and legacy INTx fail to generate an interrupt, the
driver frees the MSI-X interrupts twice.  Fix this by clearing the
have_irq flag for the MSI-X interrupts when they are freed the first
time.
Reported-by: NYinghai Lu <yhlu.kernel@gmail.com>
Tested-by: NYinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

The ConnectX Programmer's Reference Manual states that the "SO" bit
must be set when posting Fast Register and Local Invalidate send work
requests.  When this bit is set, the work request will be executed
only after all previous work requests on the send queue have been
executed.  (If the bit is not set, Fast Register and Local Invalidate
WQEs may begin execution too early, which violates the defined
semantics for these operations)

This fixes the issue with NFS/RDMA reported in
<http://lists.openfabrics.org/pipermail/general/2009-April/059253.html>
Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il>
Cc: <stable@kernel.org>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

All the fields in the control block are nicely right-aligned, so no
masking is necessary.
Signed-off-by: NJoachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Define three accessors to get/set dst attached to a skb

struct dst_entry *skb_dst(const struct sk_buff *skb)

void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)

void skb_dst_drop(struct sk_buff *skb)
This one should replace occurrences of :
dst_release(skb->dst)
skb->dst = NULL;

Delete skb->dst field
Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Last two drivers that need skb->dst in their start_xmit() function

Tell dev_hard_start_xmit() to no release it by unsetting  IFF_XMIT_DST_RELEASE
Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

T3 firmware only supports one WRs worth of page list for fast register
work requests.  The driver currently allows 2 WRs worth, which
doesn't work for T3, so reduce the limit in the driver.
Signed-off-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Signed-off-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

The current MTT allocator uses kmalloc() to allocate a buffer for its
buddy allocator, and thus is limited in the amount of MTT segments
that it can control.  As a result, the size of memory that can be
registered is limited too.  This patch uses a module parameter to
control the number of MTT entries that each segment represents,
allowing more memory to be registered with the same number of
segments.
Signed-off-by: NEli Cohen <eli@mellanox.co.il>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

If a task did not complete normally due to a TMF, libiscsi will
now complete the task with the state ISCSI_TASK_ABRT_TMF. Drivers
like bnx2i that need to free resources if a command did not complete normally
can then check the task state. If a driver does not need to send
a special command if we have dropped the session then they can check
for ISCSI_TASK_ABRT_SESS_RECOV.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

When we create the tcp/ip connection by calling ep_connect, we currently
just go by the routing table info.

I think there are two problems with this.

1. Some drivers do not have access to a routing table. Some drivers like
qla4xxx do not even know about other ports.

2. If you have two initiator ports on the same subnet, the user may have
set things up so that session1 was supposed to be run through port1. and
session2 was supposed to be run through port2. It looks like we could
end with both sessions going through one of the ports.

Fixes for cxgb3i from Karen Xie.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Network device sysfs files that grab the rtnl_lock unconditionally
will deadlock if accessed when the network device is being
unregistered.  So use trylock and syscall_restart to avoid this
deadlock.
Signed-off-by: NEric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

With a postfix increment, i is incremented one past 10K/5K before the
loop ends, so the error messages will be displayed too soon if the
test succeeds on the last iteration.  Fix the comparisons to be >
instead of >=.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Remove uneeded casts of void *.
Signed-off-by: NJack Stone <jwjstone@fastmail.fm>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Signed-off-by: NStefan Roscher <stefan.roscher@de.ibm.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

The queue map for flush completion circumvention is only used for
kernel space queue pairs.  This patch skips the allocation of the
queue maps in case the QP is created for userspace.  In addition, this
patch does not iomap the galpas for kernel usage if the queue pair is
only used in userspace.  These changes will improve the performance of
creation of userspace queue pairs.
Signed-off-by: NStefan Roscher <stefan.roscher@de.ibm.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

In case of large queue pairs there is the possibillity of allocation
failures due to memory fragmentation when using kmalloc().  To ensure
the memory is allocated even if kmalloc() can not find chunks which
are big enough, we fall back to allocating the memory with vmalloc().
Signed-off-by: NStefan Roscher <stefan.roscher@de.ibm.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

To improve performance of driver resource allocation, replace
vmalloc() calls with kmalloc().
Signed-off-by: NStefan Roscher <stefan.roscher@de.ibm.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

forgot to unlock superblock before calling deactivate_super()...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

The low-level mlx4 driver modified the page-list addresses for fast
register work requests post send to big-endian, and set a "present"
bit.  This caused problems later when the consumer attempted to unmap
the pages using the page-list (using the list addresses which were
assumed to be still in CPU-endian order).  Fix the mlx4 driver to
allocate two buffers and use a private buffer for the hardware-format
bus addresses.

This patch fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1571>,
an NFS/RDMA server crash.  The cause of the crash was found by Vu Pham
of Mellanox.  The fix is along the lines suggested by Steve Wise in
comment #21 in bug 1571.
Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

When the SQ is flushed, mark the flushed entries as not signaled so
the poll logic doesn't re-insert the CQ entry thinking its an out of
order completion.

The bug can cause the NFS/RDMA server to crash due to processing the
same completed work request twice.
Signed-off-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Update version number to 1.5.0.0
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

If reg_phys_mem() fails, we need to free memory allocated for MPA
frame with private data before returning the error. Also move
nes_add_ref() after the reg_phys_mem() is successful.
Signed-off-by: NFaisal Latif <faisal.latif@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Running large cluster setup, we are hanging after many hours of
testing.  Fixing this required going over the code and making sure the
rexmit entry was properly removed based on the cm_node's state and
packet received.  Also when receiving a FIN packet, check seq# and
make sure there were no errors before calling handle_fin().

Following are the changes done in nes_cm.c:

* handle_ack_pkt() needs to return error value, so in case of error,
  handle_fin() is not called. Some cleanup done while going over the code.

* handle_rst_pkt(), handling of cm_node's NES_CM_STATE_LAST_ACK is missing.

* process_packet(), in case of FIN only packet is received, call
  check_seq() before processing.

* in handle_fin_pkt(), we are calling cleanup_retrans_entry() for all
  conditions, even if the packets need to be dropped.
Signed-off-by: NFaisal Latif <faisal.latif@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Under heavy load with large cluster testing, it may take longer to
receive a response to MPA requests.  Change the driver to wait longer
after each rexmit to max time value.
Signed-off-by: NFaisal Latif <faisal.latif@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

check_seq() was not checking if the seq#s have wrapped.  Fix it.
Signed-off-by: NFaisal Latif <faisal.latif@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

When a connect request comes, apbvt should only be set for
non-loopback connections.
Signed-off-by: NFaisal Latif <faisal.latif@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Remove the NES_DEBUG that is causing the compile warning about an
unused variable when INFINIBAND_NES_DEBUG is not enabled.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

/sys/class/infiniband/nes?/fw_ver is not displaying firmware version
properly (it shows 0.0.0 with the current code).  Fill in the correct
firmware version number.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

With updated PHY firmware for SFP_D, setting the trace length to 1
inch for SFP_D provides a more stable link.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

Enable repause timer for port 1.  Without this setting, under stress,
the chip may misbehave.
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>