linux.git/drivers/infiniband/ulp, branch v3.14-rc2

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

2014-01-31T23:31:23+00:00

Pull SCSI target updates from Nicholas Bellinger:
 "The highlights this round include:

  - add support for SCSI Referrals (Hannes)
  - add support for T10 DIF into target core (nab + mkp)
  - add support for T10 DIF emulation in FILEIO + RAMDISK backends (Sagi + nab)
  - add support for T10 DIF -> bio_integrity passthrough in IBLOCK backend (nab)
  - prep changes to iser-target for >= v3.15 T10 DIF support (Sagi)
  - add support for qla2xxx N_Port ID Virtualization - NPIV (Saurav + Quinn)
  - allow percpu_ida_alloc() to receive task state bitmask (Kent)
  - fix >= v3.12 iscsi-target session reset hung task regression (nab)
  - fix >= v3.13 percpu_ref se_lun->lun_ref_active race (nab)
  - fix a long-standing network portal creation race (Andy)"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (51 commits)
  target: Fix percpu_ref_put race in transport_lun_remove_cmd
  target/iscsi: Fix network portal creation race
  target: Report bad sector in sense data for DIF errors
  iscsi-target: Convert gfp_t parameter to task state bitmask
  iscsi-target: Fix connection reset hang with percpu_ida_alloc
  percpu_ida: Make percpu_ida_alloc + callers accept task state bitmask
  iscsi-target: Pre-allocate more tags to avoid ack starvation
  qla2xxx: Configure NPIV fc_vport via tcm_qla2xxx_npiv_make_lport
  qla2xxx: Enhancements to enable NPIV support for QLOGIC ISPs with TCM/LIO.
  qla2xxx: Fix scsi_host leak on qlt_lport_register callback failure
  IB/isert: pass scatterlist instead of cmd to fast_reg_mr routine
  IB/isert: Move fastreg descriptor creation to a function
  IB/isert: Avoid frwr notation, user fastreg
  IB/isert: seperate connection protection domains and dma MRs
  tcm_loop: Enable DIF/DIX modes in SCSI host LLD
  target/rd: Add DIF protection into rd_execute_rw
  target/rd: Add support for protection SGL setup + release
  target/rd: Refactor rd_build_device_space + rd_release_device_space
  target/file: Add DIF protection support to fd_execute_rw
  target/file: Add DIF protection init/format support
  ...

iscsi-target: Convert gfp_t parameter to task state bitmask

2014-01-25T06:58:52+00:00

This patch propigates the use of task state bitmask now used by
percpu_ida_alloc() up the iscsi-target callchain, replacing the
use of GFP_ATOMIC for TASK_RUNNING, and GFP_KERNEL for
TASK_INTERRUPTIBLE.

Also, drop the unnecessary gfp_t parameter to isert_allocate_cmd(),
and just pass TASK_INTERRUPTIBLE into iscsit_allocate_cmd().

Signed-off-by: Nicholas Bellinger

Merge branches 'cma', 'cxgb4', 'flowsteer', 'ipoib', 'misc', 'mlx4', 'mlx5', 'ocrdma', 'qib', 'srp' and 'usnic' into for-next

2014-01-23T07:24:13+00:00

IPoIB: Report operstate consistently when brought up without a link

2014-01-23T07:01:05+00:00

After booting without a working link, "ip link" shows:

 5: mlx4_ib1:  mtu 2044 qdisc pfifo_fast
 state DOWN qlen 256
    ...
 7: mlx4_ib1.8003@mlx4_ib1:  mtu 2044 qdisc
 pfifo_fast state DOWN qlen 256
    ...

Then after connecting and disconnecting the link, which should result
in exactly the same state as before, it shows:

 5: mlx4_ib1:  mtu 2044 qdisc pfifo_fast
 state DOWN qlen 256
    ...
 7: mlx4_ib1.8003@mlx4_ib1:  mtu 2044 qdisc
 pfifo_fast state LOWERLAYERDOWN qlen 256
    ...

Notice the (now correct) LOWERLAYERDOWN operstate shown for the
mlx4_ib1.8003 interface. Ideally the identical state would be shown
right after boot.

The problem is related to the calling of netif_carrier_off() in
network drivers.  For a long time it was known that doing
netif_carrier_off() before registering the netdevice would result in
the interface's operstate being shown as UNKNOWN if the device was
brought up without a working link. This problem was fixed in commit
8f4cccbbd92 ('net: Set device operstate at registration time'), but
still there remains the minor inconsistency demonstrated above.

This patch fixes it by moving ipoib's call to netif_carrier_off() into
the .ndo_open method, which is where network drivers ordinarily do it.
With the patch when doing the same test as above, the operstate of
mlx4_ib1.8003 is shown as LOWERLAYERDOWN right after boot.

Signed-off-by: Michal Schmidt 
Acked-by: Erez Shitrit 
Signed-off-by: Roland Dreier

scsi_transport_srp: Fix a race condition

2014-01-21T18:46:17+00:00

The rport timers must be stopped before the SRP initiator destroys the
resources associated with the SCSI host. This is necessary because
otherwise the callback functions invoked from the SRP transport layer
could trigger a use-after-free. Stopping the rport timers before
invoking scsi_remove_host() can trigger long delays in the SCSI error
handler if a transport layer failure occurs while scsi_remove_host()
is in progress. Hence move the code for stopping the rport timers from
srp_rport_release() into a new function and invoke that function after
scsi_remove_host() has finished. This patch fixes the following
sporadic kernel crash:

     kernel BUG at include/asm-generic/dma-mapping-common.h:64!
     invalid opcode: 0000 [#1] SMP
     RIP: 0010:[]  [] srp_unmap_data+0x121/0x130 [ib_srp]
     Call Trace:
     [] srp_free_req+0x3c/0x80 [ib_srp]
     [] srp_finish_req+0x48/0x70 [ib_srp]
     [] srp_terminate_io+0x4b/0x60 [ib_srp]
     [] __rport_fail_io_fast+0x75/0x80 [scsi_transport_srp]
     [] rport_fast_io_fail_timedout+0x88/0xc0 [scsi_transport_srp]
     [] worker_thread+0x170/0x2a0
     [] kthread+0x96/0xa0
     [] child_rip+0xa/0x20

Signed-off-by: Bart Van Assche 
Signed-off-by: Roland Dreier

IB/isert: pass scatterlist instead of cmd to fast_reg_mr routine

2014-01-19T02:22:09+00:00

This routine may help for protection registration as well.
This patch does not change any functionality.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Nicholas Bellinger

IB/isert: Move fastreg descriptor creation to a function

2014-01-19T02:22:08+00:00

This routine may be called both by fast registration
descriptors for data and for integrity buffers.

This patch does not change any functionality.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Nicholas Bellinger

IB/isert: Avoid frwr notation, user fastreg

2014-01-19T02:22:07+00:00

Use fast registration lingo. fast registration will
also incorporate signature/DIF registration.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Nicholas Bellinger

IB/isert: seperate connection protection domains and dma MRs

2014-01-19T02:22:07+00:00

It is more correct to seperate connections protection domains
and dma_mr handles. protection information support requires to
do so.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Nicholas Bellinger

IB/core: Add flow steering support for IPoIB UD traffic

2014-01-14T22:06:50+00:00

When creating an IPoIB UD QP, provide a hint to the low level driver
that the QP should support flow-steering.  This means that privileged
user space applications can steer TCP/IP IPoIB traffic from the
network stack, in a similar manner done with Ethernet RAW_PACKET QPs.

The hint is provided through new QP creation flag called NETIF_QP.

Signed-off-by: Matan Barak 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier