Commit Graph

245 Commits

Author SHA1 Message Date
Kamal Heib
1ffba62642 RDMA/providers: Remove pointless functions
The rdma core is taking care of return the right error code when the
rdma device callbacks aren't supported.

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-30 20:31:54 -06:00
Bart Van Assche
d34ac5cd3a RDMA, core and ULPs: Declare ib_post_send() and ib_post_recv() arguments const
Since neither ib_post_send() nor ib_post_recv() modify the data structure
their second argument points at, declare that argument const. This change
makes it necessary to declare the 'bad_wr' argument const too and also to
modify all ULPs that call ib_post_send(), ib_post_recv() or
ib_post_srq_recv(). This patch does not change any functionality but makes
it possible for the compiler to verify whether the
ib_post_(send|recv|srq_recv) really do not modify the posted work request.

To make this possible, only one cast had to be introduce that casts away
constness, namely in rpcrdma_post_recvs(). The only way I can think of to
avoid that cast is to introduce an additional loop in that function or to
change the data type of bad_wr from struct ib_recv_wr ** into int
(an index that refers to an element in the work request list). However,
both approaches would require even more extensive changes than this
patch.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-30 20:09:34 -06:00
Arnd Bergmann
07f3355df7 infiniband: i40iw, nes: don't use wall time for TCP sequence numbers
The nes infiniband driver uses current_kernel_time() to get a nanosecond
granunarity timestamp to initialize its tcp sequence counters. This is
one of only a few remaining users of that deprecated function, so we
should try to get rid of it.

Aside from using a deprecated API, there are several problems I see here:

- Using a CLOCK_REALTIME based time source makes it predictable in
  case the time base is synchronized.
- Using a coarse timestamp means it only gets updated once per jiffie,
  making it even more predictable in order to avoid having to access
  the hardware clock source
- The upper 2 bits are always zero because the nanoseconds are at most
  999999999.

For the Linux TCP implementation, we use secure_tcp_seq(), which appears
to be appropriate here as well, and solves all the above problems.

i40iw uses a variant of the same code, so I do that same thing there
for ipv4. Unlike nes, i40e also supports ipv6, which needs to call
secure_tcpv6_seq instead.

Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-11 12:10:19 -06:00
Leon Romanovsky
5d9a2b0e28 RDMA/i40w: Hold read semaphore while looking after VMA
VMA lookup is supposed to be performed while mmap_sem is held.

Fixes: f26c7c8339 ("i40iw: Add 2MB page support")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-04 11:51:06 -06:00
Steve Wise
33023fb85a IB/core: add max_send_sge and max_recv_sge attributes
This patch replaces the ib_device_attr.max_sge with max_send_sge and
max_recv_sge. It allows ulps to take advantage of devices that have very
different send and recv sge depths.  For example cxgb4 has a max_recv_sge
of 4, yet a max_send_sge of 16.  Splitting out these attributes allows
much more efficient use of the SQ for cxgb4 with ulps that use the RDMA_RW
API. Consider a large RDMA WRITE that has 16 scattergather entries.
With max_sge of 4, the ulp would send 4 WRITE WRs, but with max_sge of
16, it can be done with 1 WRITE WR.

Acked-by: Sagi Grimberg <sagi@grimberg.me>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-18 13:17:28 -06:00
Shiraz Saleem
aaf5e003b1 i40iw: Reorganize acquire/release of locks in i40iw_manage_apbvt
Commit f43c00c04b ("i40iw: Extend port reuse support for listeners")
introduces a sparse warning:

include/linux/spinlock.h:365:9: sparse: context imbalance in
'i40iw_manage_apbvt' - unexpected unlock

Fix this by reorganizing the acquire/release of locks in
i40iw_manage_apbvt and add a new function i40iw_cqp_manage_abvpt_cmd
to perform the CQP command. Also, use __clear_bit and __test_and_set_bit
as we do not need atomic versions.

Fixes: f43c00c04b ("i40iw: Extend port reuse support for listeners")
Suggested-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-18 11:09:05 -06:00
Jason Gunthorpe
0394808d9e Merge branch 'mr_fix' into git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma for-next
Update mlx4 to support user MR creation against read-only memory, previously
it required the memory to be writable.

Based on rdma for-rc due to dependencies.

* mr_fix: (2 commits)
  IB/mlx4: Mark user MR as writable if actual virtual memory is writable
  IB/core: Make testing MR flags for writability a static inline function
2018-05-28 11:44:35 -06:00
Shiraz Saleem
f43c00c04b i40iw: Extend port reuse support for listeners
If two listeners are created with different IP's but
same port, the second rdma_listen fails due to a
duplicate port entry being added from the CQP add
APBVT OP. commit f16dc0aa5e ("i40iw: Add support
for port reuse on active side connections") does not
account for listener side port reuse.

Check for duplicate port before invoking the CQP command
to add APBVT entry and delete the entry only if the port
is not in use. Additionally, consolidate all port-reuse
logic into i40iw_manage_apbvt.

Fixes: f16dc0aa5e ("i40iw: Add support for port reuse on active side connections")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-05-16 13:13:20 -06:00
Andrew Boyer
43731753c4 RDMA/i40iw: Avoid panic when reading back the IRQ affinity hint
The current code sets an affinity hint with a cpumask_t stored on the
stack. This value can then be accessed through /proc/irq/*/affinity_hint/,
causing a segfault or returning corrupt data.

Move the cpumask_t into struct i40iw_msix_vector so it is available later.

Backtrace:
BUG: unable to handle kernel paging request at ffffb16e600e7c90
IP: irq_affinity_hint_proc_show+0x60/0xf0
PGD 17c0c6d067
PUD 17c0c6e067
PMD 15d4a0e067
PTE 0

Oops: 0000 [#1] SMP
Modules linked in: ...
CPU: 3 PID: 172543 Comm: grep Tainted: G           OE   ... #1
Hardware name: ...
task: ffff9a5caee08000 task.stack: ffffb16e659d8000
RIP: 0010:irq_affinity_hint_proc_show+0x60/0xf0
RSP: 0018:ffffb16e659dbd20 EFLAGS: 00010086
RAX: 0000000000000246 RBX: ffffb16e659dbd20 RCX: 0000000000000000
RDX: ffffb16e600e7c90 RSI: 0000000000000003 RDI: 0000000000000046
RBP: ffffb16e659dbd88 R08: 0000000000000038 R09: 0000000000000001
R10: 0000000070803079 R11: 0000000000000000 R12: ffff9a59d1d97a00
R13: ffff9a5da47a6cd8 R14: ffff9a5da47a6c00 R15: ffff9a59d1d97a00
FS:  00007f946c31d740(0000) GS:ffff9a5dc1800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffb16e600e7c90 CR3: 00000016a4339000 CR4: 00000000007406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
 seq_read+0x12d/0x430
 ? sched_clock_cpu+0x11/0xb0
 proc_reg_read+0x48/0x70
 __vfs_read+0x37/0x140
 ? security_file_permission+0xa0/0xc0
 vfs_read+0x96/0x140
 SyS_read+0x58/0xc0
 do_syscall_64+0x5a/0x190
 entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x7f946bbc97e0
RSP: 002b:00007ffdd0c4ae08 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000000000096b000 RCX: 00007f946bbc97e0
RDX: 000000000096b000 RSI: 00007f946a2f0000 RDI: 0000000000000004
RBP: 0000000000001000 R08: 00007f946a2ef011 R09: 000000000000000a
R10: 0000000000001000 R11: 0000000000000246 R12: 00007f946a2f0000
R13: 0000000000000004 R14: 0000000000000000 R15: 00007f946a2f0000
Code: b9 08 00 00 00 49 89 c6 48 89 df 31 c0 4d 8d ae d8 00 00 00 f3 48 ab 4c 89 ef e8 6c 9a 56 00 49 8b 96 30 01 00 00 48 85 d2 74 3f <48> 8b 0a 48 89 4d 98 48 8b 4a 08 48 89 4d a0 48 8b 4a 10 48 89
RIP: irq_affinity_hint_proc_show+0x60/0xf0 RSP: ffffb16e659dbd20
CR2: ffffb16e600e7c90

Fixes: 8e06af711b ("i40iw: add main, hdr, status")
Signed-off-by: Andrew Boyer <andrew.boyer@dell.com>
Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-05-09 10:45:19 -04:00
Andrew Boyer
9f7b16afab RDMA/i40iw: Avoid reference leaks when processing the AEQ
In this switch there is a reference held on the QP. 'continue' will grab
the next event without releasing the reference, causing a leak.

Change it to 'break' to drop the reference before grabbing the next event.

Fixes: 4e9042e647 ("i40iw: add hw and utils files")
Signed-off-by: Andrew Boyer <andrew.boyer@dell.com>
Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-05-09 10:45:18 -04:00
Andrew Boyer
a75895b1eb RDMA/i40iw: Avoid panic when objects are being created and destroyed
A panic occurs when there is a newly-registered element on the QP/CQ MR
list waiting to be attached, but a different MR is deregistered. The
current code only checks for whether the list is empty, not whether the
element being deregistered is actually on the list.

Fix the panic by adding a boolean to track if the object is on the list.

Fixes: d374984179 ("i40iw: add files for iwarp interface")
Signed-off-by: Andrew Boyer <andrew.boyer@dell.com>
Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-05-09 10:45:18 -04:00
Mustafa Ismail
eeb1af4f53 i40iw: Use correct address in dst_neigh_lookup for IPv6
Use of incorrect structure address for IPv6 neighbor lookup
causes connections to IPv6 addresses to fail. Fix this by
using correct address in call to dst_neigh_lookup.

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-05-09 10:39:51 -04:00
Mustafa Ismail
5a7189d529 i40iw: Fix memory leak in error path of create QP
If i40iw_allocate_dma_mem fails when creating a QP, the
memory allocated for the QP structure using kzalloc is not
freed because iwqp->allocated_buffer is used to free the
memory and it is not setup until later. Fix this by setting
iwqp->allocated_buffer before allocating the dma memory.

Fixes: d374984179 ("i40iw: add files for iwarp interface")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-05-09 10:39:50 -04:00
Jia-Ju Bai
4e56569cee infiniband: i40iw: Replace GFP_ATOMIC with GFP_KERNEL in i40iw_l2param_change
i40iw_l2param_change() is never called in atomic context.

i40iw_make_listen_node() is only set as ".l2_param_change"
in struct i40e_client_ops, and this function pointer is not called
in atomic context.

Despite never getting called from atomic context,
i40iw_l2param_change() calls kzalloc() with GFP_ATOMIC,
which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
which can sleep and improve the possibility of sucessful allocation.

This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-04-17 19:57:12 -06:00
Jia-Ju Bai
f9af873014 infiniband: i40iw: Replace GFP_ATOMIC with GFP_KERNEL in i40iw_make_listen_node
i40iw_make_listen_node() is never called in atomic context.

i40iw_make_listen_node() is only called by i40iw_create_listen, which is
set as ".create_listen" in struct iw_cm_verbs.

Despite never getting called from atomic context,
i40iw_make_listen_node() calls kzalloc() with GFP_ATOMIC,
which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
which can sleep and improve the possibility of sucessful allocation.

This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-04-17 19:57:11 -06:00
Jia-Ju Bai
39e487faaf infiniband: i40iw: Replace GFP_ATOMIC with GFP_KERNEL in i40iw_add_mqh_4
i40iw_add_mqh_4() is never called in atomic context, because it
calls rtnl_lock() that can sleep.

Despite never getting called from atomic context,
i40iw_add_mqh_4() calls kzalloc() with GFP_ATOMIC,
which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
which can sleep and improve the possibility of sucessful allocation.

This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-04-17 19:57:11 -06:00
Shiraz Saleem
3e64f8d6f5 i40iw: Remove pre-production workaround for resource profile 1
Support for resource profile 1 is currenlty deprecated due to
a pre-production errata. Remove this workaround as its no longer
needed.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-04-03 13:40:39 -06:00
Matan Barak
0ede73bc01 IB/uverbs: Extend uverbs_ioctl header with driver_id
Extending uverbs_ioctl header with driver_id and another reserved
field. driver_id should be used in order to identify the driver.
Since every driver could have its own parsing tree, this is necessary
for strace support.
Downstream patches take off the EXPERIMENTAL flag from the ioctl() IB
support and thus we add some reserved fields for future usage.

Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-19 14:45:17 -06:00
Henry Orosco
546b1452fd i40iw: Tear-down connection after CQP Modify QP failure
There is no explicit tear-down sequence initiated on
connections if the Control QP OP, Modify QP to close,
fails. Fix this by triggering a driver generated
Asynchronous Event (AE) on Modify QP failures and
tear-down the connection on receipt of the AE.

This fix can be generalized to other Modify QP failures
(i.e. RTS->TERM, IDLE->RTS, etc) as any modify failure
will require a connection tear-down.

Fixes: d374984179 ("i40iw: add files for iwarp interface")
Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-15 15:58:05 -06:00
Henry Orosco
a8b9234b12 i40iw: Refactor of driver generated AEs
The flush CQP OP can be used to optionally generate
Asynchronous Events (AEs) in addition to QP flush.
Consolidate all HW AE generation code under a new
function i40iw_gen_ae which use the flush CQP OP
to only generate AEs.

Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-15 15:58:04 -06:00
Jason Gunthorpe
9a657b4c4a RDMA/i40iw: Move uapi header to include/uapi
All of these defines are part of the uABI for the driver, this
header duplicates providers/i40iw/i40iw-abi.h in rdma-core.

Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-15 15:58:03 -06:00
Arnd Bergmann
baa00fcde4 RDMA/i40iw: include linux/irq.h
We get a build failure on ARM unless the header is included explicitly:

drivers/infiniband/hw/i40iw/i40iw_verbs.c: In function 'i40iw_get_vector_affinity':
drivers/infiniband/hw/i40iw/i40iw_verbs.c:2747:9: error: implicit declaration of function 'irq_get_affinity_mask'; did you mean 'irq_create_affinity_masks'? [-Werror=implicit-function-declaration]
  return irq_get_affinity_mask(msix_vec->irq);
         ^~~~~~~~~~~~~~~~~~~~~
         irq_create_affinity_masks
drivers/infiniband/hw/i40iw/i40iw_verbs.c:2747:9: error: returning 'int' from a function with return type 'const struct cpumask *' makes pointer from integer without a cast [-Werror=int-conversion]
  return irq_get_affinity_mask(msix_vec->irq);

Fixes: 7e952b19eb ("i40iw: Implement get_vector_affinity API")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-03-14 16:09:56 -04:00
Shiraz Saleem
7e952b19eb i40iw: Implement get_vector_affinity API
Storage ULPs (like NVMEoF) benefit from exposing affinity mapping
per completion vector to find the optimal multi-queue affinity
assignments. The ULPs call the verbs API ib_get_vector_affinity
introduced in commit c66cd353bb ("RDMA/core: expose affinity mappings per
completion vector") to get the underlying devices affinity mappings.

Add support in driver to expose the affinity masks per MSI-X
completion vector.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-06 16:00:51 -07:00
Shiraz Saleem
7de8b3576a i40iw: Improve CM node lookup time on connection setup
Currently all CM nodes involved in a connection are
maintained in a connected_node list per dev. During
connection setup, we need to search this every time
we receive a packet on the iWARP LAN Queue (ILQ) and
this can be pretty inefficient for large number of
connections.

Fix this by organizing the CM nodes in two lists -
accelerated list and non-accelerated list. The search
on ILQ receive would be limited to only non accelerated
nodes. When a node moves to RTS, it is added to the
accelerated list.

Benchmarking ucmatose 16k connections shows a 20%
improvement in test completion time.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-06 16:00:51 -07:00
Mustafa Ismail
6b0c549fc6 i40iw: Refactor handling of txpend list
Currently the TX pending lists for IEQ and ILQ are
handled separately. The handling of both can be
consolidated in i40iw_poll_completion.

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-06 16:00:51 -07:00
Mustafa Ismail
f20d429511 i40iw: Free IEQ resources
The iWARP Exception Queue (IEQ) resources are not freed when a QP is
destroyed. Fix this by freeing IEQ resources when freeing QP resources.

Fixes: d374984179 ("i40iw: add files for iwarp interface")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-16 20:38:18 -07:00
Mustafa Ismail
ebb6c0c015 i40iw: Remove setting of rem_addr.len
Remove setting of rem_addr.len before calling iw_rdma_write,
iw_inline_rdma_write and rdma_read. rem_addr.len is not used in those
functions.

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-16 20:38:18 -07:00
Sindhu Devale
72b30e986d i40iw: Remove limit on re-posting AEQ entries to HW
Currently, if the number of processed Asynchronous Event Queue (AEQ)
entries exceeds 255, they are not returned to HW for re-use. During
scale-up, the unreturned AEQ entries can grow to the max AEQ size and
cause the HW to report an AEQ overflow.

Remove the check which limits the number of processed AEQ entries returned
to HW.

Fixes: 86dbcd0f12 ("RDMA/i40iw: add file to handle cqp calls")
Signed-off-by: Sindhu Devale <sindhu.devale@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-16 20:38:18 -07:00
Shiraz Saleem
6376e926af i40iw: Zero-out consumer key on allocate stag for FMR
If the application invalidates the MR before the FMR WR, HW parses the
consumer key portion of the stag and returns an invalid stag key
Asynchronous Event (AE) that tears down the QP.

Fix this by zeroing-out the consumer key portion of the allocated stag
returned to application for FMR.

Fixes: ee855d3b93f3 ("RDMA/i40iw: Add base memory management extensions")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-16 20:38:18 -07:00
Shiraz Saleem
23541b28e5 i40iw: Remove extra call to i40iw_est_sd()
Remove redundant estimate SD function call.  sd_needed should already be
updated at the end of the do while resource reduction loop.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-16 20:38:18 -07:00
Jia-Ju Bai
106b886306 i40iw: Replace mdelay with msleep in i40iw_wait_pe_ready
i40iw_wait_pe_ready is not called in an interrupt handler
nor holding a spinlock.
The function mdelay in it can be replaced with msleep,
to reduce busy wait.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-05 13:47:29 -05:00
Jason Gunthorpe
76a895d9e1 Merge branch 'from-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git
Patches for 4.16 that are dependent on patches sent to 4.15-rc.

These are small clean ups for the vmw_pvrdma and i40iw drivers.

* 'from-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git:
  RDMA/vmw_pvrdma: Remove usage of BIT() from UAPI header
  RDMA/vmw_pvrdma: Use refcount_t instead of atomic_t
  RDMA/vmw_pvrdma: Use more specific sizeof in kcalloc
  RDMA/vmw_pvrdma: Clarify QP and CQ is_kernel logic
  RDMA/vmw_pvrdma: Add UAR SRQ macros in ABI header file
  i40iw: Change accelerated flag to bool
2017-12-27 21:50:46 -07:00
Henry Orosco
66131e005e i40iw: Change accelerated flag to bool
The accelerated flag only utilizes two values: 0 and 1.
Modify accelerated flag in struct i40iw_cm_node to bool.

Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-27 21:37:26 -07:00
Tatyana Nikolova
fefa06811c i40iw: Fix the connection ORD value for loopback
The accepting QP ORD value should be adjusted not to
exceed the peer QP IRD value (RFC 6581). This is
skipped for loopback. After the ORD is validated
by i40iw_record_ird_ord(), adjust the ORD value of
the loopback accepting QP to prevent overrunning the
IRD space of the peer QP. Also move the ORD accounting
for 0-byte RDMA read to i40iw_record_ird_ord().

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:46:11 -07:00
Tatyana Nikolova
ce9ce74145 i40iw: Validate correct IRD/ORD connection parameters
Casting to u16 before validating IRD/ORD connection
parameters could cause recording wrong IRD/ORD values
in the cm_node. Validate the IRD/ORD parameters as
they are passed by the application before recording
them.

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:39:48 -07:00
Shiraz Saleem
756f77d216 i40iw: Ignore LLP_DOUBT_REACHABILITY AE
The LLP_DOUBT_REACHABILITY Asynchronous Event (AE) is an early
warning of a connection issue. It is followed by LLP_TOO_MANY_RETRIES
AE, if the retransmit threshold is reached and recovery is not possible
for the connection.

Currently we terminate the connection on receiving the
LLP_DOUBT_REACHABILITY AE. Ignore this AE and
terminate the connection only on LLP_TOO_MANY_RETRIES AE.

This improves the user experience on cable disconnect/reconnect
scenario while running iWARP traffic. On cable disconnect,
the QP traffic is paused and the user has a larger and more
reasonable timeout within which if the cable is reconnected,
traffic can continue.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:39:21 -07:00
Shiraz Saleem
df8b13a1b2 i40iw: Fix sequence number for the first partial FPDU
Partial FPDU processing is broken as the sequence number
for the first partial FPDU is wrong due to incorrect
Q2 buffer offset. The offset should be 64 rather than 16.

Fixes: 786c6adb3a ("i40iw: add puda code")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:39:20 -07:00
Shiraz Saleem
3020f252c3 i40iw: Selectively teardown QPs on IP addr change event
On IP address change event, all connected QPs are torn down
irrespective of whether IP address is involved in a connection.

Only teardown connections those source or destination address
matches the netdev interface IP address being changed, and if
they are on the same VLAN as the netdev.

Fixes: e5e74b61b1 ("i40iw: Add IP addr handling on netdev events")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:39:07 -07:00
Shiraz Saleem
0c5d515546 i40iw: Add notifier for network device events
Register a netdevice notifier for netdev UP/DOWN
notification events and report the appropriate ib event.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:38:05 -07:00
Shiraz Saleem
fe99afd1fe i40iw: Correct Q1/XF object count equation
Lower Inbound RDMA Read Queue (Q1) object count by a factor of 2
as it is incorrectly doubled. Also, round up Q1 and Transmit FIFO (XF)
object count to power of 2 to satisfy hardware requirement.

Fixes: 86dbcd0f12 ("i40iw: add file to handle cqp calls")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:38:05 -07:00
Shiraz Saleem
8758768ad8 i40iw: Use utility function roundup_pow_of_two()
Consolidate all power of 2 round calculations to
use kernel utility function roundup_pow_of_two().

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:37:51 -07:00
Shiraz Saleem
f32b766cf7 i40iw: Set MAX_IRD_SIZE to 64
Increase I40IW_MAX_IRD_SIZE to 64 which is the device limit.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:33:30 -07:00
Mustafa Ismail
24b9abab15 i40iw: Reinitialize add_sd_cnt
add_sd_cnt in info structure passed to i40iw_create_hmc_obj_type
must be 0 and since it is modified during the call, it must be
reset in the loop. This avoids unnecessarily reprogramming the
SDs multiple times with the same values.

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-11 16:19:44 -07:00
Chien Tin Tung
807e005ab8 i40iw: Use sqsize to initialize cqp_requests elements
Use sqsize instead of I40IW_CQP_SW_SQSIZE_2048 to initialize
cqp_requests elements in the for-loop as sqsize is used
to allocate memory for cqp_requests.

Signed-off-by: Chien Tin Tung <chien.tin.tung@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-11 16:19:43 -07:00
Arnd Bergmann
40dc8c4df0 i40iw: remove unused 'timeval' struct member
There is a stale entry in i40iw_cm_tcp_context that apparently
was copied from the 'nes' driver but never used in i40iw.
I'm trying to kill off all users of timeval as part of the
y2038-safety work, so let's just remove this one.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-11 16:19:42 -07:00
Geert Uytterhoeven
1c3081a8ad i40w: Remove garbage at end of INFINIBAND_I40IW Kconfig section
Remove leftover garbage (containing Kconfig dependencies for another
symbol?)

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-11 16:19:41 -07:00
Henry Orosco
a7c6dfe215 i40iw: Notify user of established connection after QP in RTS
Established CM event is sent prior to modifying QP to RTS state.
This can result in application closing the connection before the
QP is actually in RTS state. Move sending of established CM
event to after modify QP to RTS.

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-01 12:21:26 -07:00
Tatyana Nikolova
8bb45252bb i40iw: Move MPA request event for loopback after connect
For loopback, a MPA request event is generated when cm_node
is initialized, which allows applications to act on the
connect request before i40iw_connect() has completed.
In some cases, the reject flow executes in parallel with
the connect flow and doesn't delete an APBVT entry,
because the apbvt_set variable is still not set by the
connect flow. Move the MPA request event to the end of
i40iw_connect() to notify application for a connect
request, after connect has completed.

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-01 12:21:25 -07:00
Mustafa Ismail
a283cdc4d3 i40iw: Correct ARP index mask
The ARP table entry indexes are aliased to 12bits
instead of the intended 16bits when uploaded to
the QP Context. This will present an issue when the
number of connections exceeds 4096 as ARP entries are
reused. Fix this by adjusting the mask to account for
the full 16bits.

Fixes: 4e9042e647 ("i40iw: add hw and utils files")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-01 12:21:25 -07:00
Mustafa Ismail
10499986db i40iw: Do not free sqbuf when event is I40IW_TIMER_TYPE_CLOSE
When the event type is I40IW_TIMER_TYPE_CLOSE, there is no sqbuf and
it should not be freed as one in i40iw_schedule_cm_timer().

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-01 12:21:25 -07:00