linux-stable.git/drivers/infiniband, branch linux-3.13.y

iser-target: Fix command leak for tx_desc->comp_llnode_batch

2014-03-24T04:44:13+00:00

commit ebbe442183b7b8192c963266f1c89048fefc63a5 upstream.

This patch addresses a number of active I/O shutdown issues
related to isert_cmd descriptors being leaked that are part
of a completion interrupt coalescing batch.

This includes adding logic in isert_cq_tx_comp_err() to
drain any associated tx_desc->comp_llnode_batch, as well
as isert_cq_drain_comp_llist() to drain any associated
isert_conn->conn_comp_llist.

Also, set tx_desc->llnode_active in isert_init_send_wr()
in order to determine when work requests need to be skipped
in isert_cq_tx_work() exception path code.

Finally, update isert_init_send_wr() to only allow interrupt
coalescing when ISER_CONN_UP.

Acked-by: Sagi Grimberg 
Cc: Or Gerlitz 
Signed-off-by: Nicholas Bellinger 
Signed-off-by: Greg Kroah-Hartman

iser-target: Fix post_send_buf_count for RDMA READ/WRITE

2014-03-24T04:44:13+00:00

commit b6b87a1df604678ed1be40158080db012a99ccca upstream.

This patch fixes the incorrect setting of ->post_send_buf_count
related to RDMA WRITEs + READs where isert_rdma_rw->send_wr_num
was not being taken into account.

This includes incrementing ->post_send_buf_count within
isert_put_datain() + isert_get_dataout(), decrementing within
__isert_send_completion() + isert_response_completion(), and
clearing wr->send_wr_num within isert_completion_rdma_read()

This is necessary because even though IB_SEND_SIGNALED is
not set for RDMA WRITEs + READs, during a QP failure event
the work requests will be returned with exception status
from the TX completion queue.

Acked-by: Sagi Grimberg 
Cc: Or Gerlitz 
Signed-off-by: Nicholas Bellinger 
Signed-off-by: Greg Kroah-Hartman

iser-target: Ignore completions for FRWRs in isert_cq_tx_work

2014-03-24T04:44:12+00:00

commit 9bb4ca68fc48eea618b1af1c1cde2a251ae32d1b upstream.

This patch changes IB_WR_FAST_REG_MR + IB_WR_LOCAL_INV related
work requests to include a ISER_FRWR_LI_WRID value in order to
signal isert_cq_tx_work() that these requests should be ignored.

This is necessary because even though IB_SEND_SIGNALED is not
set for either work request, during a QP failure event the work
requests will be returned with exception status from the TX
completion queue.

v2 changes:
 - Rename ISER_FRWR_LI_WRID -> ISER_FASTREG_LI_WRID (Sagi)

Acked-by: Sagi Grimberg 
Cc: Or Gerlitz 
Signed-off-by: Nicholas Bellinger 
Signed-off-by: Greg Kroah-Hartman

iscsi/iser-target: Fix isert_conn->state hung shutdown issues

2014-03-24T04:44:12+00:00

commit defd884845297fd5690594bfe89656b01f16d87e upstream.

This patch addresses a couple of different hug shutdown issues
related to wait_event() + isert_conn->state.  First, it changes
isert_conn->conn_wait + isert_conn->conn_wait_comp_err from
waitqueues to completions, and sets ISER_CONN_TERMINATING from
within isert_disconnect_work().

Second, it splits isert_free_conn() into isert_wait_conn() that
is called earlier in iscsit_close_connection() to ensure that
all outstanding commands have completed before continuing.

Finally, it breaks isert_cq_comp_err() into seperate TX / RX
related code, and adds logic in isert_cq_rx_comp_err() to wait
for outstanding commands to complete before setting ISER_CONN_DOWN
and calling complete(&isert_conn->conn_wait_comp_err).

Acked-by: Sagi Grimberg 
Cc: Or Gerlitz 
Signed-off-by: Nicholas Bellinger 
Signed-off-by: Greg Kroah-Hartman

iscsi/iser-target: Use list_del_init for ->i_conn_node

2014-03-24T04:44:12+00:00

commit 5159d763f60af693a3fcec45dce2021f66e528a4 upstream.

There are a handful of uses of list_empty() for cmd->i_conn_node
within iser-target code that expect to return false once a cmd
has been removed from the per connect list.

This patch changes all uses of list_del -> list_del_init in order
to ensure that list_empty() returns false as expected.

Acked-by: Sagi Grimberg 
Cc: Or Gerlitz 
Signed-off-by: Nicholas Bellinger 
Signed-off-by: Greg Kroah-Hartman

IB/qib: Add missing serdes init sequence

2014-02-22T21:34:58+00:00

commit 2f75e12c4457a9b3d042c0a0d748fa198dc2ffaf upstream.

Research has shown that commit a77fcf895046 ("IB/qib: Use a single
txselect module parameter for serdes tuning") missed a key serdes init
sequence.

This patch add that sequence.

Reviewed-by: Dennis Dalessandro 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Roland Dreier 
Signed-off-by: Greg Kroah-Hartman

IB/qib: Fix QP check when looping back to/from QP1

2014-02-13T21:55:32+00:00

commit 6e0ea9e6cbcead7fa8c76e3e3b9de4a50c5131c5 upstream.

The GSI QP type is compatible with and should be allowed to send data
to/from any UD QP.  This was found when testing ibacm on the same node
as an SA.

Reviewed-by: Mike Marciniszyn 
Signed-off-by: Ira Weiny 
Signed-off-by: Roland Dreier 
Signed-off-by: Greg Kroah-Hartman

infiniband: make sure the src net is infiniband when create new link

2014-01-04T01:38:56+00:00

When we create a new infiniband link with uninfiniband device, e.g. `ip link
add link em1 type ipoib pkey 0x8001`. We will get a NULL pointer dereference
cause other dev like Ethernet don't have struct ib_device.

The code path is:
rtnl_newlink
  |-- ipoib_new_child_link
        |-- __ipoib_vlan_add
              |-- ipoib_set_dev_features
                    |-- ib_query_device

Fix this bug by make sure the src net is infiniband when create new link.

Signed-off-by: Hangbin Liu 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2013-12-30T17:33:30+00:00

Pull networking fixes from David Miller:
 "Some holiday bug fixes for 3.13...  There is still one bug I'd like to
  get fixed before 3.13-final.

  The vlan code erroneously assignes the header ops of the underlying
  real device to the VLAN device above it when the real device can
  hardware offload VLAN handling.  That's completely bogus because
  header ops are tied to the device type, so they only expect to see a
  'dev' argument compatible with their ops.

  The fix is the have the VLAN code use a special set of header ops that
  does the pass-thru correctly, by calling the underlying real device's
  header ops but _also_ passing in the real device instead of the VLAN
  device.

  That fix is currently waiting some testing.

  Anyways, of note here:

   1) Fix bitmap edge case in radiotap, from Johannes Berg.

   2) Fix oops on driver unload in rtlwifi, from Larry Finger.

   3) Bonding doesn't do locking correctly during speed/duplex/link
      changes, from Ding Tianhong.

   4) Fix header parsing in GRE code, this bug has been around for a few
      releases.  From Timo Teräs.

   5) SIT tunnel driver MTU check needs to take GSO into account, from
      Eric Dumazet.

   6) Minor info leak in inet_diag, from Daniel Borkmann.

   7) Info leak in YAM hamradio driver, from Salva Peiró.

   8) Fix route expiration state handling in ipv6 routing code, from Li
      RongQing.

   9) DCCP probe module does not check request_module()'s return value,
      from Wang Weidong.

  10) cpsw driver passes NULL device names to request_irq(), from
      Mugunthan V N.

  11) Prevent a NULL splat in RDS binding code, from Sasha Levin.

  12) Fix 4G overflow test in tg3 driver, from Nithin Sujir.

  13) Cure use after free in arc_emac and fec driver's software
      timestamp handling, from Eric Dumazet.

  14) SIT driver can fail to release the route when
      iptunnel_handle_offloads() throws an error.  From Li RongQing.

  15) Several batman-adv fixes from Simon Wunderlich and Antonio
      Quartulli.

  16) Fix deadlock during TIPC socket release, from Ying Xue.

  17) Fix regression in ROSE protocol recvmsg() msg_name handling, from
      Florian Westphal.

  18) stmmac PTP support releases wrong spinlock, from Vince Bridgers"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (73 commits)
  stmmac: Fix incorrect spinlock release and PTP cap detection.
  phy: IRQ cannot be shared
  net: rose: restore old recvmsg behavior
  xen-netback: fix guest-receive-side array sizes
  fec: Do not assume that PHY reset is active low
  tipc: fix deadlock during socket release
  netfilter: nf_tables: fix wrong datatype in nft_validate_data_load()
  batman-adv: fix vlan header access
  batman-adv: clean nf state when removing protocol header
  batman-adv: fix alignment for batadv_tvlv_tt_change
  batman-adv: fix size of batadv_bla_claim_dst
  batman-adv: fix size of batadv_icmp_header
  batman-adv: fix header alignment by unrolling batadv_header
  batman-adv: fix alignment for batadv_coded_packet
  netfilter: nf_tables: fix oops when updating table with user chains
  netfilter: nf_tables: fix dumping with large number of sets
  ipv6: release dst properly in ipip6_tunnel_xmit
  netxen: Correct off-by-one errors in bounds checks
  net: Add some clarification to skb_tx_timestamp() comment.
  arc_emac: fix potential use after free
  ...

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

2013-12-24T01:23:42+00:00

Pull infiniband fixes from Roland Dreier:
 "Last batch of InfiniBand/RDMA changes for 3.13 / 2014:
   - Additional checks for uverbs to ensure forward compatibility,
     handle malformed input better.
   - Fix potential use-after-free in iWARP connection manager.
   - Make a function static"

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/uverbs: Check access to userspace response buffer in extended command
  IB/uverbs: Check input length in flow steering uverbs
  IB/uverbs: Set error code when fail to consume all flow_spec items
  IB/uverbs: Check reserved fields in create_flow
  IB/uverbs: Check comp_mask in destroy_flow
  IB/uverbs: Check reserved field in extended command header
  IB/uverbs: New macro to set pointers to NULL if length is 0 in INIT_UDATA()
  IB/core: const'ify inbuf in struct ib_udata
  RDMA/iwcm: Don't touch cm_id after deref in rem_ref
  RDMA/cxgb4: Make _c4iw_write_mem_dma() static