Commit graph

29 commits

Author SHA1 Message Date
Tom Tucker
07ebafbaaa RDMA: iWARP Core Changes.
Modifications to the existing rdma header files, core files, drivers,
and ulp files to support iWARP, including:
 - Hook iWARP CM into the build system and use it in rdma_cm.
 - Convert enum ib_node_type to enum rdma_node_type, which includes
   the possibility of RDMA_NODE_RNIC, and update everything for this.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22 15:22:47 -07:00
Roland Dreier
3cd965646b IB: Whitespace fixes
Remove some trailing whitespace that has snuck in despite the best
efforts of whitespace=error-all.  Also fix a few other whitespace
bogosities.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22 15:22:46 -07:00
Sean Hefty
2527e681fd IB/mad: Validate MADs for spec compliance
Validate MADs sent by userspace clients for spec compliance with
C13-18.1.1 (prevent duplicate requests and responses sent on the
same port).  Without this, RMPP transactions get aborted because
of duplicate packets.

This patch is similar to that provided by Jack Morgenstein.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-07-24 09:18:07 -07:00
Hal Rosenstock
618a3c03fc IB/mad: RMPP support for additional classes
Add RMPP support for additional management classes that support it.
Also, validate RMPP is consistent with management class specified.

Signed-off-by: Hal Rosenstock <halr@voltaire.com>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-30 07:19:51 -08:00
Jack Morgenstein
f36e1793e2 IB/umad: Add support for large RMPP transfers
Add support for sending and receiving large RMPP transfers.  The old
code supports transfers only as large as a single contiguous kernel
memory allocation.  This patch uses linked list of memory buffers when
sending and receiving data to avoid needing contiguous pages for
larger transfers.

  Receive side: copy the arriving MADs in chunks instead of coalescing
  to one large buffer in kernel space.

  Send side: split a multipacket MAD buffer to a list of segments,
  (multipacket_list) and send these using a gather list of size 2.
  Also, save pointer to last sent segment, and retrieve requested
  segments by walking list starting at last sent segment. Finally,
  save pointer to last-acked segment.  When retrying, retrieve
  segments for resending relative to this pointer.  When updating last
  ack, start at this pointer.

Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20 10:08:23 -08:00
Jack Morgenstein
0efc4883a6 IB/umad: fix memory leaks
Don't leak packet if it had a timeout, and don't leak timeout struct
if queue_packet() fails.

Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-12-09 13:46:32 -08:00
Michael S. Tsirkin
bf6d9e23a3 IB/umad: fix RMPP handling
ib_umad_write in user_mad.c is looking at rmpp_hdr field in MAD before
checking that the MAD actually has the RMPP header.  So for a MAD
without RMPP header it looks like we are actually checking a bit
inside M_Key, or something.

Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-11-28 13:07:20 -08:00
Roland Dreier
eabc77935d IB/umad: make sure write()s have sufficient data
Make sure that userspace passes in enough data when sending a MAD.  We
always copy at least sizeof (struct ib_user_mad) + IB_MGMT_RMPP_HDR
bytes from userspace, so anything less is definitely invalid.  Also,
if the length is less than this limit, it's possible for the second
copy_from_user() to get a negative length and trigger a BUG().

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-11-18 14:18:26 -08:00
Roland Dreier
94382f3562 [IB] umad: further ib_unregister_mad_agent() deadlock fixes
The previous umad deadlock fix left ib_umad_kill_port() still
vulnerable to deadlocking.  This patch fixes that by downgrading our
lock to a read lock when we might end up trying to reacquire the lock
for reading.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-11-10 10:22:51 -08:00
Roland Dreier
ec914c52d6 [IB] umad: get rid of unused mr array
Now that ib_umad uses the new MAD sending interface, it no longer
needs its own L_Key.  So just delete the array of MRs that it keeps.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-11-10 10:22:50 -08:00
Roland Dreier
2f76e82947 [IB] umad: avoid potential deadlock when unregistering MAD agents
ib_unregister_mad_agent() completes all pending MAD sends and waits
for the agent's send_handler routine to return.  umad's send_handler()
calls queue_packet(), which does down_read() on the port mutex to look
up the agent ID.  This means that the port mutex cannot be held for
writing while calling ib_unregister_mad_agent(), or else it will
deadlock.  This patch fixes all the calls to ib_unregister_mad_agent()
in the umad module to avoid this deadlock.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-11-10 10:22:50 -08:00
Michael S. Tsirkin
8b37b94721 [IB] umad: two small fixes
Two small fixes for the umad module:
 - set kobject name for issm device properly
 - in ib_umad_add_one(), s is subtracted from the index i when
   initializing ports, so s should be subtracted from the index when
   freeing ports in the error path as well.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-11-06 15:47:02 -08:00
Roland Dreier
0c99cb6d5f [IB] umad: fix hot remove of IB devices
Fix hotplug of devices for ib_umad module: when a device goes away,
kill off all MAD agents for open files associated with that device,
and make sure that the device is not touched again after ib_umad
returns from its remove_one function.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-11-03 12:01:18 -08:00
Roland Dreier
4cce3390c9 [IB] fix up class_device_create() calls
Fix class_device_create() calls to match the new prototype which
takes a parent device pointer.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-28 16:38:15 -07:00
Roland Dreier
a74968f8c3 [IB] umad: Fix device lifetime problems
Move ib_umad module to using cdev_alloc() and class_device_create() so
that we can handle device lifetime properly.  Now we can make sure we
keep all of our data structures around until the last way to reach
them is gone.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-28 15:37:23 -07:00
Sean Hefty
cb0f0910f4 [IB] ib_umad: various cleanups
Simplify user_mad.c code in a few places, and convert from kmalloc() +
memset() to kzalloc().  This also fixes a theoretical race window by
not accessing packet->length after posting the send buffer (the send
could complete and packet could be freed before we get to the return
statement at the end of ib_umad_write()).

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-27 20:48:11 -07:00
Roland Dreier
089a1bedd8 [IB] ib_umad: fix crash when freeing send buffers
The conversion of user_mad.c to the new MAD send API was slightly off:
in a few places, we used packet->msg instead of packet->msg->mad when
referring to the actual data buffer, which ended up corrupting the
underlying data structure and crashing when we free an invalid pointer.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-27 20:33:43 -07:00
Sean Hefty
34816ad98e [IB] Fix MAD layer DMA mappings to avoid touching data buffer once mapped
The MAD layer was violating the DMA API by touching data buffers used
for sends after the DMA mapping was done.  This causes problems on
non-cache-coherent architectures, because the device doing DMA won't
see updates to the payload buffers that exist only in the CPU cache.

Fix this by having all MAD consumers use ib_create_send_mad() to
allocate their send buffers, and moving the DMA mapping into the MAD
layer so it can be done just before calling send (and after any
modifications of the send buffer by the MAD layer).

Tested on a non-cache-coherent PowerPC 440SPe system.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-25 10:51:39 -07:00
Roland Dreier
bbf2078609 [IB] user_mad: Use class_device.devt
Use devt member of struct class_device so that we don't have to create
our own "dev" file in sysfs.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-20 12:54:01 -07:00
Roland Dreier
2e0c512aff [IB] user_mad: trivial coding style fixes
Add spaces after "sizeof" operator to match the rest of file.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-20 12:30:16 -07:00
Hal Rosenstock
eff4c654b1 [PATCH] IB: Fix data length for RMPP SA sends
We need to subtract off the header length from our payload
length when sending multi-packet SA messages.

Signed-off-by: Hal Rosenstock <halr@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-09-19 13:51:01 -07:00
Roland Dreier
a4d61e8480 [PATCH] IB: move include files to include/rdma
Move the InfiniBand headers from drivers/infiniband/include to include/rdma.
This allows InfiniBand-using code to live elsewhere, and lets us remove the
ugly EXTRA_CFLAGS include path from the InfiniBand Makefiles.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-08-26 20:37:38 -07:00
Sean Hefty
97f52eb438 [PATCH] IB: sparse endianness cleanup
Fix sparse warnings.  Use __be* where appropriate.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-08-26 20:37:35 -07:00
Roland Dreier
2a1d9b7f09 [PATCH] IB: Add copyright notices
Make some lawyers happy and add copyright notices for people who
forgot to include them when they actually touched the code.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-08-26 20:37:35 -07:00
Hal Rosenstock
cb183a06b3 [PATCH] IB: Implementation for RMPP support in user MAD
Implementation for RMPP support in user MAD

Signed-off-by: Hal Rosenstock <halr@voltaire.com>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-27 16:26:14 -07:00
Hal Rosenstock
f75b7a5294 [PATCH] IB: Add automatic retries to MAD layer
Add automatic retries to MAD layer.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Hal Rosenstock <halr@voltaire.com>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-27 16:26:10 -07:00
Roland Dreier
561e148ea9 [PATCH] IB: fix potential ib_umad leak
Free all unclaimed MAD receive buffers when userspace closes our file so we
don't leak memory.

Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-25 15:31:28 -07:00
Roland Dreier
0df3bb131f [PATCH] IB: Fix user MAD registrations with class 0
Fix handling of MAD agent registrations with mgmt_class == 0.  In this case
ib_umad should pass a NULL registration request to the MAD core rather than a
request with mgmt_class set to 0.

Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16 15:26:11 -07:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00