linux.git/drivers/infiniband, branch v3.0-rc7

RDMA: Check for NULL mode in .devnode methods

2011-07-04T22:53:28+00:00

Commits 71c29bd5c235 ("IB/uverbs: Add devnode method to set path/mode")
and c3af0980ce01 ("IB: Add devnode methods to cm_class and umad_class")
added devnode methods that set the mode.

However, these methods don't check for a NULL mode, and so we get a
crash when unloading modules because devtmpfs_delete_node() calls
device_get_devnode() with mode == NULL.

Add the missing checks.

Signed-off-by: Goldwyn Rodrigues 
[ Also fix cm.c.  - Roland ]
Signed-off-by: Roland Dreier 
Signed-off-by: Linus Torvalds

Merge branches 'cxgb4' and 'qib' into for-next

2011-06-17T18:57:55+00:00

IB/qib: Ensure that LOS and DFE are being turned off

2011-06-17T18:56:59+00:00

Due to timing, it is possible for the LOS and DFE to remain on. This
is due to the link progressing to LinkUP prior to the driver getting
the first Status Changed interrupt.  By expanding the conditions under
which LOS is turned off and DFE timeout is being set, timing is no
longer an issue.

Signed-off-by: Mitko Haralanov 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Roland Dreier

RDMA/cxgb4: Couple of abort fixes

2011-06-17T18:54:56+00:00

- fix a race where the driver could end up sending a close_con_req
  after an abort_rpl.  In c4iw_ep_disconnect(), send abort or close
  request with the ep mutex held.

- fix a hang where driver fails to wake up when a connection is reset
  during a normal close.  Wake up any waiters in the interrupt path,
  and correctly cleanup after rdma_fini() failures.

Signed-off-by: Steve Wise 
Signed-off-by: Roland Dreier

RDMA/cxgb4: Don't truncate MR lengths

2011-06-17T18:54:50+00:00

Remove left-over code from T3 that limited MR sizes to 32b.

Signed-off-by: Steve Wise 
Signed-off-by: Roland Dreier

RDMA/cxgb4: Don't exceed hw IQ depth limit for user CQs

2011-06-17T18:52:45+00:00

Memory allocated for user CQs gets rounded up to the next page
boundary.  And after rounding, we recalculate the resulting IQ depth
and we need to make sure we don't exceed the HW limits.

This bug can result a much smaller CQ allocated than was expected if
the HW size field is exceeded, resulting in CQ overflow failures.

Signed-off-by: Steve Wise 
Signed-off-by: Roland Dreier

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

2011-05-26T19:13:57+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  RDMA/cma: Save PID of ID's owner
  RDMA/cma: Add support for netlink statistics export
  RDMA/cma: Pass QP type into rdma_create_id()
  RDMA: Update exported headers list
  RDMA/cma: Export enum cma_state in 
  RDMA/nes: Add a check for strict_strtoul()
  RDMA/cxgb3: Don't post zero-byte read if endpoint is going away
  RDMA/cxgb4: Use completion objects for event blocking
  IB/srp: Fix integer -> pointer cast warnings
  IB: Add devnode methods to cm_class and umad_class
  IB/mad: Return EPROTONOSUPPORT when an RDMA device lacks the QP required
  IB/uverbs: Add devnode method to set path/mode
  RDMA/ucma: Add .nodename/.mode to tell userspace where to create device node
  RDMA: Add netlink infrastructure
  RDMA: Add error handling to ib_core_init()

Merge branches 'cma', 'cxgb3', 'cxgb4', 'misc', 'nes', 'netlink', 'srp' and 'uverbs' into for-next

2011-05-25T20:47:20+00:00

RDMA/cma: Save PID of ID's owner

2011-05-25T20:46:23+00:00

Save the PID associated with an RDMA CM ID for reporting via netlink.

Signed-off-by: Nir Muchtar 
Signed-off-by: Roland Dreier

RDMA/cma: Add support for netlink statistics export

2011-05-25T20:46:23+00:00

Add callbacks and data types for statistics export of all current
devices/ids.  The schema for RDMA CM is a series of netlink messages.
Each one contains an rdma_cm_stat struct.  Additionally, two netlink
attributes are created for the addresses for each message (if
applicable).

Their types used are:
RDMA_NL_RDMA_CM_ATTR_SRC_ADDR (The source address for this ID)
RDMA_NL_RDMA_CM_ATTR_DST_ADDR (The destination address for this ID)
sockaddr_* structs are encapsulated within these attributes.

In other words, every transaction contains a series of messages like:

-------message 1-------
struct rdma_cm_id_stats {
       __u32 qp_num;
       __u32 bound_dev_if;
       __u32 port_space;
       __s32 pid;
       __u8 cm_state;
       __u8 node_type;
       __u8 port_num;
       __u8 reserved;
}
RDMA_NL_RDMA_CM_ATTR_SRC_ADDR attribute - contains the source address
RDMA_NL_RDMA_CM_ATTR_DST_ADDR attribute - contains the destination address
-------end 1-------
-------message 2-------
struct rdma_cm_id_stats
RDMA_NL_RDMA_CM_ATTR_SRC_ADDR attribute
RDMA_NL_RDMA_CM_ATTR_DST_ADDR attribute
-------end 2-------

Signed-off-by: Nir Muchtar 
Signed-off-by: Roland Dreier