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  1. 27 5月, 2010 2 次提交
  3. 26 5月, 2010 2 次提交
  5. 25 5月, 2010 13 次提交
  7. 24 5月, 2010 3 次提交
  9. 22 5月, 2010 2 次提交
    • G
      of: Remove duplicate fields from of_platform_driver · 4018294b
      由 Grant Likely 提交于 
      .name, .match_table and .owner are duplicated in both of_platform_driver
and device_driver.  This patch is a removes the extra copies from struct
of_platform_driver and converts all users to the device_driver members.

This patch is a pretty mechanical change.  The usage model doesn't change
and if any drivers have been missed, or if anything has been fixed up
incorrectly, then it will fail with a compile time error, and the fixup
will be trivial.  This patch looks big and scary because it touches so
many files, but it should be pretty safe.
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
Acked-by: NSean MacLennan <smaclennan@pikatech.com>
      4018294b
    • R
      IB/core: Allow device-specific per-port sysfs files · 9a6edb60
      由 Ralph Campbell 提交于 
      Add a new parameter to ib_register_device() so that low-level device
drivers can pass in a pointer to a callback function that will be
called for each port that is registered in sysfs.  This allows
low-level device drivers to create files in

    /sys/class/infiniband/<hca>/ports/<N>/

without having to poke through the internals of the RDMA sysfs handling.

There is no need for an unregister function since the kobject
reference will go to zero when ib_unregister_device() is called.
Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      9a6edb60
  11. 19 5月, 2010 1 次提交
  13. 16 5月, 2010 1 次提交
  15. 13 5月, 2010 4 次提交
    • D
      IB/iser: Fix error flow in iser_create_ib_conn_res() · 9fda1ac5
      由 Dan Carpenter 提交于 
      We shouldn't free things here because we free them later.
The call tree looks like this:
	iser_connect() ==> initiating the connection establishment
and later
	iser_cma_handler() => iser_route_handler() => iser_create_ib_conn_res()
if we fail here, eventually iser_conn_release() is called, resulting
in a double free.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Signed-off-by: NOr Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      9fda1ac5
    • O
      IB/iser: Enhance disconnection logic for multi-pathing · 39ff05db
      由 Or Gerlitz 提交于 
      The iser connection teardown flow isn't over until the underlying
Connection Manager (e.g the IB CM) delivers a disconnected or timeout
event through the RDMA-CM.  When the remote (target) side isn't
reachable, e.g when some HW e.g port/hca/switch isn't functioning or
taken down administratively, the CM timeout flow is used and the event
may be generated only after relatively long time -- on the order of
tens of seconds.

The current iser code exposes this possibly long delay to higher
layers, specifically to the iscsid daemon and iscsi kernel stack. As a
result, the iscsi stack doesn't respond well: this low-level CM delay
is added to the fail-over time under HA schemes such as the one
provided by DM multipath through the multipathd(8) service.

This patch enhances the reference counting scheme on iser's IB
connections so that the disconnect flow initiated by iscsid from user
space (ep_disconnect) doesn't wait for the CM to deliver the
disconnect/timeout event.  (The connection teardown isn't done from
iser's view point until the event is delivered)

The iser ib (rdma) connection object is destroyed when its reference
count reaches zero.  When this happens on the RDMA-CM callback
context, extra care is taken so that the RDMA-CM does the actual
destroying of the associated ID, since doing it in the callback is
prohibited.

The reference count of iser ib connection normally reaches three,
where the <ref, deref> relations are

 1. conn <init, terminate>
 2. conn <bind, stop/destroy>
 3. cma id <create, disconnect/error/timeout callbacks>

With this patch, multipath fail-over time is about 30 seconds, while
without this patch, multipath fail-over time is about 130 seconds.
Signed-off-by: NOr Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      39ff05db
    • O
      IB/iser: Remove buggy back-pointer setting · d265b980
      由 Or Gerlitz 提交于 
      The iscsi connection object life cycle includes binding and unbinding
(conn_stop) to/from the iscsi transport connection object.  Since
iscsi connection objects are recycled, at the time the transport
connection (e.g iser's IB connection) is released, it is not valid to
touch the iscsi connection tied to the transport back-pointer since it
may already point to a different transport connection.
Signed-off-by: NOr Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      d265b980
    • O
      IB/iser: Add asynchronous event handler · 2110f9bf
      由 Or Gerlitz 提交于 
      Add handler to handle events such as port up and down.  This is useful
when testing high-availability schemes such as multi-pathing.
Signed-off-by: NOr Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      2110f9bf
  17. 06 5月, 2010 1 次提交
  19. 29 4月, 2010 1 次提交
    • R
      RDMA/cxgb3: Shrink .text with compile-time init of handlers arrays · 617c9a7e
      由 Roland Dreier 提交于 
      Using compile-time designated initializers for the handler arrays
instead of open-coding the initialization in iwch_cm_init() is (IMHO)
cleaner, and leads to substantially smaller code: on my x86-64 build,
bloat-o-meter shows:

add/remove: 0/1 grow/shrink: 4/3 up/down: 4/-1682 (-1678)
function                                     old     new   delta
tx_ack                                       167     168      +1
state_set                                     55      56      +1
start_ep_timer                                99     100      +1
pass_establish                               177     178      +1
act_open_req_arp_failure                      39      38      -1
sched                                         84      82      -2
iwch_cm_init                                 442      91    -351
work_handlers                               1328       -   -1328
Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      617c9a7e
  21. 22 4月, 2010 10 次提交