180 Commits

Author SHA1 Message Date
Zhu Yanjun
693a5386ef RDMA/irdma: Split mr alloc and free into new functions
In the function irdma_reg_user_mr, the mr allocation and free
will be used by other functions. As such, the source codes related
with mr allocation and free are split into the new functions.

Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Link: https://lore.kernel.org/r/20230116193502.66540-3-yanjun.zhu@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2023-01-26 12:58:46 +02:00
Zhu Yanjun
01798df198 RDMA/irdma: Split MEM handler into irdma_reg_user_mr_type_mem
The source codes related with IRDMA_MEMREG_TYPE_MEM are split
into a new function irdma_reg_user_mr_type_mem.

Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Link: https://lore.kernel.org/r/20230116193502.66540-2-yanjun.zhu@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2023-01-26 12:58:46 +02:00
Zhu Yanjun
bd99ede8ef RDMA/irdma: Remove extra ret variable in favor of existing err
In the function irdma_reg_user_mr, err and ret exist. Actually,
one variable err is enough.

Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Link: https://lore.kernel.org/r/20230104064333.660344-1-yanjun.zhu@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2023-01-04 08:59:02 +02:00
Mustafa Ismail
9907526d25 RDMA/irdma: Initialize net_type before checking it
The av->net_type is not initialized before it is checked in
irdma_modify_qp_roce. This leads to an incorrect update to the ARP cache
and QP context. RoCEv2 connections might fail as result.

Set the net_type using rdma_gid_attr_network_type.

Fixes: 80005c43d4c8 ("RDMA/irdma: Use net_type to check network type")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20221122004410.1471-1-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-11-22 16:13:44 +02:00
Mustafa Ismail
8f7e2daa63 RDMA/irdma: Do not request 2-level PBLEs for CQ alloc
When allocating PBLE's for a large CQ, it is possible
that a 2-level PBLE is returned which would cause the
CQ allocation to fail since 1-level is assumed and checked for.
Fix this by requesting a level one PBLE only.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20221115011701.1379-4-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-11-17 10:41:28 +02:00
Mustafa Ismail
24419777e9 RDMA/irdma: Fix RQ completion opcode
The opcode written by HW, in the RQ CQE, is the
RoCEv2/iWARP protocol opcode from the received
packet and not the SW opcode as currently assumed.
Fix this by returning the raw operation type and
queue type in the CQE to irdma_process_cqe and add
2 helpers set_ib_wc_op_sq set_ib_wc_op_rq to map
IRDMA HW op types to IB op types.

Note that for iWARP, only Write with Immediate is
supported so the opcode can only be IB_WC_RECV_RDMA_WITH_IMM
when there is immediate data present.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20221115011701.1379-3-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-11-17 10:41:28 +02:00
Mustafa Ismail
4f44e519b6 RDMA/irdma: Fix inline for multiple SGE's
Currently, inline send and inline write assume a single
SGE and only copy data from the first one. Add support
for multiple SGE's.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20221115011701.1379-2-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-11-17 10:41:28 +02:00
Shiraz Saleem
4eace75e08 RDMA/irdma: Report the correct link speed
The active link speed is currently hard-coded in irdma_query_port due
to which the port rate in ibstatus does reflect the active link speed.

Call ib_get_eth_speed in irdma_query_port to get the active link speed.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Reported-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20221104234957.1135-1-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-11-07 09:12:42 +02:00
Jason Gunthorpe
33331a728c Linux 6.0
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Merge tag 'v6.0' into rdma.git for-next

Trvial merge conflicts against rdma.git for-rc resolved matching
linux-next:
            drivers/infiniband/hw/hns/hns_roce_hw_v2.c
            drivers/infiniband/hw/hns/hns_roce_main.c

https://lore.kernel.org/r/20220929124005.105149-1-broonie@kernel.org

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-10-06 19:48:45 -03:00
Shiraz Saleem
34acb833cc RDMA/irdma: Validate udata inlen and outlen
Currently ib_copy_from_udata and ib_copy_to_udata could underfill
the request and response buffer if the user-space passes an undersized
value for udata->inlen or udata->outlen respectively [1]
This could lead to undesirable behavior.

Zero initing the buffer only goes as far as preventing using the buffer
uninitialized.

Validate udata->inlen and udata->outlen passed from user-space to ensure
they are at least the required minimum size.

[1] https://lore.kernel.org/linux-rdma/MWHPR11MB0029F37D40D9D4A993F8F549E9D79@MWHPR11MB0029.namprd11.prod.outlook.com/

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20220907191324.1173-3-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-09-20 13:19:53 +03:00
Sindhu-Devale
7f51a961f8 RDMA/irdma: Align AE id codes to correct flush code and event
A number of asynchronous event (AE) ids were not aligned to the
correct flush_code and event_type. Fix these up so that the
correct IBV error and event codes are returned to application.

Also, add handling for new AE ids like IRDMA_AE_INVALID_REQUEST to
return the correct WC error code.

Fixes: 44d9e52977a1 ("RDMA/irdma: Implement device initialization definitions")
Signed-off-by: Sindhu-Devale <sindhu.devale@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20220907191324.1173-2-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-09-20 13:19:52 +03:00
Sindhu-Devale
a261786fdc RDMA/irdma: Report RNR NAK generation in device caps
Report RNR NAK generation when device capabilities are queried

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Signed-off-by: Sindhu-Devale <sindhu.devale@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20220906223244.1119-6-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-09-07 11:22:18 +03:00
Sindhu-Devale
2c8844431d RDMA/irdma: Use s/g array in post send only when its valid
Send with invalidate verb call can pass in an
uninitialized s/g array with 0 sge's which is
filled into irdma WQE and causes a HW asynchronous
event.

Fix this by using the s/g array in irdma post send
only when its valid.

Fixes: 551c46e ("RDMA/irdma: Add user/kernel shared libraries")
Signed-off-by: Sindhu-Devale <sindhu.devale@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20220906223244.1119-5-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-09-07 11:22:18 +03:00
Sindhu-Devale
dcb23bbb1d RDMA/irdma: Return correct WC error for bind operation failure
When a QP and a MR on a local host are in different PDs, the HW generates
an asynchronous event (AE). The same AE is generated when a QP and a MW
are in different PDs during a bind operation. Return the more appropriate
IBV_WC_MW_BIND_ERR for the latter case by checking the OP type from the
CQE in error.

Fixes: 551c46edc769 ("RDMA/irdma: Add user/kernel shared libraries")
Signed-off-by: Sindhu-Devale <sindhu.devale@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20220906223244.1119-4-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-09-07 11:22:18 +03:00
Sindhu-Devale
6b227bd32d RDMA/irdma: Return error on MR deregister CQP failure
The MR deregister CQP can fail if an MW is bound to it.
Return an appropriate error for this case.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Signed-off-by: Sindhu-Devale <sindhu.devale@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20220906223244.1119-3-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-09-07 11:22:17 +03:00
Sindhu-Devale
12faad5e5c RDMA/irdma: Report the correct max cqes from query device
Report the correct max cqes available to an application taking
into account a reserved entry to detect overflow.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Signed-off-by: Sindhu-Devale <sindhu.devale@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20220906223244.1119-2-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-09-07 11:22:17 +03:00
Shiraz Saleem
ead54ced63 RDMA/irdma: Fix drain SQ hang with no completion
SW generated completions for outstanding WRs posted on SQ
after QP is in error target the wrong CQ. This causes the
ib_drain_sq to hang with no completion.

Fix this to generate completions on the right CQ.

[  863.969340] INFO: task kworker/u52:2:671 blocked for more than 122 seconds.
[  863.979224]       Not tainted 5.14.0-130.el9.x86_64 #1
[  863.986588] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  863.996997] task:kworker/u52:2   state:D stack:    0 pid:  671 ppid:     2 flags:0x00004000
[  864.007272] Workqueue: xprtiod xprt_autoclose [sunrpc]
[  864.014056] Call Trace:
[  864.017575]  __schedule+0x206/0x580
[  864.022296]  schedule+0x43/0xa0
[  864.026736]  schedule_timeout+0x115/0x150
[  864.032185]  __wait_for_common+0x93/0x1d0
[  864.037717]  ? usleep_range_state+0x90/0x90
[  864.043368]  __ib_drain_sq+0xf6/0x170 [ib_core]
[  864.049371]  ? __rdma_block_iter_next+0x80/0x80 [ib_core]
[  864.056240]  ib_drain_sq+0x66/0x70 [ib_core]
[  864.062003]  rpcrdma_xprt_disconnect+0x82/0x3b0 [rpcrdma]
[  864.069365]  ? xprt_prepare_transmit+0x5d/0xc0 [sunrpc]
[  864.076386]  xprt_rdma_close+0xe/0x30 [rpcrdma]
[  864.082593]  xprt_autoclose+0x52/0x100 [sunrpc]
[  864.088718]  process_one_work+0x1e8/0x3c0
[  864.094170]  worker_thread+0x50/0x3b0
[  864.099109]  ? rescuer_thread+0x370/0x370
[  864.104473]  kthread+0x149/0x170
[  864.109022]  ? set_kthread_struct+0x40/0x40
[  864.114713]  ret_from_fork+0x22/0x30

Fixes: 81091d7696ae ("RDMA/irdma: Add SW mechanism to generate completions on error")
Link: https://lore.kernel.org/r/20220824154358.117-1-shiraz.saleem@intel.com
Reported-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-08-28 12:43:37 +03:00
Linus Torvalds
e495274793 v5.20 pull request
This PR includes a new RDMA driver for Alibaba Cloud hardware
 
 - Bug fixes and small features for irdma, hns, siw, qedr, hfi1, mlx5
 
 - General spelling/grammer fixes
 
 - rdma cm can follow changes in neighbours for control packets
 
 - Significant amounts of rxe fixes and spec compliance changes
 
 - Use the modern NAPI API
 
 - Use the bitmap API instead of open coding
 
 - Performance improvements for rtrs
 
 - Add the ERDMA driver for Alibaba cloud
 
 - Fix a use after free bug in SRP
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "This cycle we got a new RDMA driver "ERDMA" for the Alibaba cloud
  environment. Otherwise the changes are dominated by rxe fixes.

  There is another RDMA driver on the list that might get merged next
  cycle, 'MANA' for the Azure cloud environment.

  Summary:

   - Bug fixes and small features for irdma, hns, siw, qedr, hfi1, mlx5

   - General spelling/grammer fixes

   - rdma cm can follow changes in neighbours for control packets

   - Significant amounts of rxe fixes and spec compliance changes

   - Use the modern NAPI API

   - Use the bitmap API instead of open coding

   - Performance improvements for rtrs

   - Add the ERDMA driver for Alibaba cloud

   - Fix a use after free bug in SRP"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (99 commits)
  RDMA/ib_srpt: Unify checking rdma_cm_id condition in srpt_cm_req_recv()
  RDMA/rxe: Fix error unwind in rxe_create_qp()
  RDMA/mlx5: Add missing check for return value in get namespace flow
  RDMA/rxe: Split qp state for requester and completer
  RDMA/rxe: Generate error completion for error requester QP state
  RDMA/rxe: Update wqe_index for each wqe error completion
  RDMA/srpt: Fix a use-after-free
  RDMA/srpt: Introduce a reference count in struct srpt_device
  RDMA/srpt: Duplicate port name members
  IB/qib: Fix repeated "in" within comments
  RDMA/erdma: Add driver to kernel build environment
  RDMA/erdma: Add the ABI definitions
  RDMA/erdma: Add the erdma module
  RDMA/erdma: Add connection management (CM) support
  RDMA/erdma: Add verbs implementation
  RDMA/erdma: Add verbs header file
  RDMA/erdma: Add event queue implementation
  RDMA/erdma: Add cmdq implementation
  RDMA/erdma: Add main include file
  RDMA/erdma: Add the hardware related definitions
  ...
2022-08-04 19:54:32 -07:00
Christophe JAILLET
82319639cd RDMA/irdma: Use the bitmap API to allocate bitmaps
Use bitmap_zalloc()/bitmap_free() instead of hand-writing them.

It is less verbose and it improves the semantic.

Link: https://lore.kernel.org/r/1f671b1af5881723ee265a0a12809c92950e58aa.1657567269.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-07-18 13:23:58 +03:00
Mustafa Ismail
3a844596ed RDMA/irdma: Fix setting of QP context err_rq_idx_valid field
Setting err_rq_idx_valid field in QP context when the AE source of the
AEQE is not associated with an RQ causes the firmware flush to fail.

Set err_rq_idx_valid field in QP context only if it is associated with an
RQ. Additionally, cleanup the redundant setting of this field in
irdma_process_aeq.

Fixes: 44d9e52977a1 ("RDMA/irdma: Implement device initialization definitions")
Link: https://lore.kernel.org/r/20220705230815.265-8-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-07-18 10:40:12 +03:00
Mustafa Ismail
82ab2b5265 RDMA/irdma: Fix VLAN connection with wildcard address
When an application listens on a wildcard address, and there are VLAN and
non-VLAN IP addresses, iWARP connection establishemnt can fail if the listen
node VLAN ID does not match.

Fix this by checking the vlan_id only if not a wildcard listen node.

Fixes: 146b9756f14c ("RDMA/irdma: Add connection manager")
Link: https://lore.kernel.org/r/20220705230815.265-7-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-07-18 10:40:05 +03:00
Mustafa Ismail
8ecef7890b RDMA/irdma: Fix a window for use-after-free
During a destroy CQ an interrupt may cause processing of a CQE after CQ
resources are freed by irdma_cq_free_rsrc(). Fix this by moving the call
to irdma_cq_free_rsrc() after the irdma_sc_cleanup_ceqes(), which is
called under the cq_lock.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Link: https://lore.kernel.org/r/20220705230815.265-6-shiraz.saleem@intel.com
Signed-off-by: Bartosz Sobczak <bartosz.sobczak@intel.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-07-18 10:39:57 +03:00
Nayan Kumar
c8c7c07581 RDMA/irdma: Make resource distribution algorithm more QP oriented
Adapt the resource distribution algorithm in irdma_cfg_fpm_val to be more
QP oriented. If the configuration is too big for the available memory,
trim the MR and PBLE's first before trimming the QPs. This also avoids
having to double QPs requested as input to algorithm for GEN1 devices.

Link: https://lore.kernel.org/r/20220705230815.265-5-shiraz.saleem@intel.com
Signed-off-by: Nayan Kumar <nayan.kumar@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-07-18 10:39:50 +03:00
Mustafa Ismail
36a26d1239 RDMA/irdma: Make CQP invalid state error non-critical
The invalid state error returned by the Control Queue-Pair (CQP) is not a
critical error.

Add it to the irdma_noncrit_err_list and drop reporting it as device error
message.

Link: https://lore.kernel.org/r/20220705230815.265-4-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-07-18 10:39:43 +03:00
Mustafa Ismail
26bf019032 RDMA/irdma: Add AE source to error log
To assist with debugging add the Asynchronous Event (AE) source when
logging the abnormal AE error log message.

Link: https://lore.kernel.org/r/20220705230815.265-3-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-07-18 10:39:36 +03:00
Mustafa Ismail
137d264c6f RDMA/irdma: Add 2 level PBLE support for FMR
Level 2 Physical Buffer List Entry (PBLE) is currently not supported for
Fast MRs which limits memory registrations to 256K pages.

Adapt irdma_set_page and irdma_alloc_mr to allow for 2 level PBLEs.

Link: https://lore.kernel.org/r/20220705230815.265-2-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-07-18 10:39:28 +03:00
Mustafa Ismail
cc0315564d RDMA/irdma: Fix sleep from invalid context BUG
Taking the qos_mutex to process RoCEv2 QP's on netdev events causes a
kernel splat.

Fix this by removing the handling for RoCEv2 in
irdma_cm_teardown_connections that uses the mutex. This handling is only
needed for iWARP to avoid having connections established while the link is
down or having connections remain functional after the IP address is
removed.

  BUG: sleeping function called from invalid context at kernel/locking/mutex.
  Call Trace:
  kernel: dump_stack+0x66/0x90
  kernel: ___might_sleep.cold.92+0x8d/0x9a
  kernel: mutex_lock+0x1c/0x40
  kernel: irdma_cm_teardown_connections+0x28e/0x4d0 [irdma]
  kernel: ? check_preempt_curr+0x7a/0x90
  kernel: ? select_idle_sibling+0x22/0x3c0
  kernel: ? select_task_rq_fair+0x94c/0xc90
  kernel: ? irdma_exec_cqp_cmd+0xc27/0x17c0 [irdma]
  kernel: ? __wake_up_common+0x7a/0x190
  kernel: irdma_if_notify+0x3cc/0x450 [irdma]
  kernel: ? sched_clock_cpu+0xc/0xb0
  kernel: irdma_inet6addr_event+0xc6/0x150 [irdma]

Fixes: 146b9756f14c ("RDMA/irdma: Add connection manager")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-07-11 03:04:16 -03:00
Mustafa Ismail
5e8afb8792 RDMA/irdma: Do not advertise 1GB page size for x722
x722 does not support 1GB page size but the irdma driver incorrectly
advertises 1GB page size support for x722 device to ib_core to compute the
best page size to use on this MR.  This could lead to incorrect start
offsets computed by hardware on the MR.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-07-11 03:03:50 -03:00
Jason Gunthorpe
a6f844da39 Linux 5.18
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Merge tag 'v5.18' into rdma.git for-next

Following patches have dependencies.

Resolve the merge conflict in
drivers/net/ethernet/mellanox/mlx5/core/main.c by keeping the new names
for the fs functions following linux-next:

https://lore.kernel.org/r/20220519113529.226bc3e2@canb.auug.org.au/

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-05-24 12:40:28 -03:00
Mustafa Ismail
81091d7696 RDMA/irdma: Add SW mechanism to generate completions on error
HW flushes after QP in error state is not reliable. This can lead to
   application hang waiting on a completion for outstanding WRs.  Implement a
SW mechanism to generate completions for any outstanding WR's after the QP
is modified to error.

This is accomplished by starting a delayed worker after the QP is modified
to error and the HW flush is performed. The worker will generate
completions that will be returned to the application when it polls the
CQ. This mechanism only applies to Kernel applications.

Link: https://lore.kernel.org/r/20220425181624.1617-1-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-05-11 15:58:40 -03:00
Mustafa Ismail
1c9043ae06 RDMA/irdma: Fix possible crash due to NULL netdev in notifier
For some net events in irdma_net_event notifier, the netdev can be NULL
which will cause a crash in rdma_vlan_dev_real_dev.  Fix this by moving
all processing to the NETEVENT_NEIGH_UPDATE case where the netdev is
guaranteed to not be NULL.

Fixes: 6702bc147448 ("RDMA/irdma: Fix netdev notifications for vlan's")
Link: https://lore.kernel.org/r/20220425181703.1634-4-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-05-02 11:10:33 -03:00
Shiraz Saleem
2df6d89590 RDMA/irdma: Reduce iWARP QP destroy time
QP destroy is synchronous and waits for its refcnt to be decremented in
irdma_cm_node_free_cb (for iWARP) which fires after the RCU grace period
elapses.

Applications running a large number of connections are exposed to high
wait times on destroy QP for events like SIGABORT.

The long pole for this wait time is the firing of the call_rcu callback
during a CM node destroy which can be slow. It holds the QP reference
count and blocks the destroy QP from completing.

call_rcu only needs to make sure that list walkers have a reference to the
cm_node object before freeing it and thus need to wait for grace period
elapse. The rest of the connection teardown in irdma_cm_node_free_cb is
moved out of the grace period wait in irdma_destroy_connection. Also,
replace call_rcu with a simple kfree_rcu as it just needs to do a kfree on
the cm_node

Fixes: 146b9756f14c ("RDMA/irdma: Add connection manager")
Link: https://lore.kernel.org/r/20220425181703.1634-3-shiraz.saleem@intel.com
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-05-02 11:10:33 -03:00
Tatyana Nikolova
7b8943b821 RDMA/irdma: Flush iWARP QP if modified to ERR from RTR state
When connection establishment fails in iWARP mode, an app can drain the
QPs and hang because flush isn't issued when the QP is modified from RTR
state to error. Issue a flush in this case using function
irdma_cm_disconn().

Update irdma_cm_disconn() to do flush when cm_id is NULL, which is the
case when the QP is in RTR state and there is an error in the connection
establishment.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Link: https://lore.kernel.org/r/20220425181703.1634-2-shiraz.saleem@intel.com
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@nvidia.com>
2022-05-02 11:10:33 -03:00
Duoming Zhou
679ab61bf5 RDMA/irdma: Fix deadlock in irdma_cleanup_cm_core()
There is a deadlock in irdma_cleanup_cm_core(), which is shown below:

   (Thread 1)              |      (Thread 2)
                           | irdma_schedule_cm_timer()
irdma_cleanup_cm_core()    |  add_timer()
 spin_lock_irqsave() //(1) |  (wait a time)
 ...                       | irdma_cm_timer_tick()
 del_timer_sync()          |  spin_lock_irqsave() //(2)
 (wait timer to stop)      |  ...

We hold cm_core->ht_lock in position (1) of thread 1 and use
del_timer_sync() to wait timer to stop, but timer handler also need
cm_core->ht_lock in position (2) of thread 2.  As a result,
irdma_cleanup_cm_core() will block forever.

This patch removes the check of timer_pending() in
irdma_cleanup_cm_core(), because the del_timer_sync() function will just
return directly if there isn't a pending timer. As a result, the lock is
redundant, because there is no resource it could protect.

Link: https://lore.kernel.org/r/20220418153322.42524-1-duoming@zju.edu.cn
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-04-19 13:12:51 -03:00
Jason Gunthorpe
e945c653c8 RDMA: Split kernel-only global device caps from uverbs device caps
Split out flags from ib_device::device_cap_flags that are only used
internally to the kernel into kernel_cap_flags that is not part of the
uapi. This limits the device_cap_flags to being the same bitmap that will
be copied to userspace.

This cleanly splits out the uverbs flags from the kernel flags to avoid
confusion in the flags bitmap.

Add some short comments describing which each of the kernel flags is
connected to. Remove unused kernel flags.

Link: https://lore.kernel.org/r/0-v2-22c19e565eef+139a-kern_caps_jgg@nvidia.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-04-06 15:02:13 -03:00
Zhu Yanjun
45bf247218 RDMA/irdma: Remove the redundant variable
In the function irdma_puda_get_next_send_wqe, the variable wqe
is not necessary. So remove it.

Link: https://lore.kernel.org/r/20220323230135.291813-1-yanjun.zhu@intel.com
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-04-04 10:50:24 -03:00
Mustafa Ismail
51cad28724 RDMA/irdma: Add support for address handle re-use
Address handles (AH) are a limited HW resource and some user applications
may create large numbers of identical AH's.  Avoid running out of AH's by
reusing existing identical ones.

Link: https://lore.kernel.org/r/20220228183650.290-1-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-03-15 16:22:55 -03:00
Dan Carpenter
6f6dbb819d RDMA/irdma: Prevent some integer underflows
My static checker complains that:

    drivers/infiniband/hw/irdma/ctrl.c:3605 irdma_sc_ceq_init()
    warn: can subtract underflow 'info->dev->hmc_fpm_misc.max_ceqs'?

It appears that "info->dev->hmc_fpm_misc.max_ceqs" comes from the firmware
in irdma_sc_parse_fpm_query_buf() so, yes, there is a chance that it could
be zero.  Even if we trust the firmware, it's easy enough to change the
condition just as a hardenning measure.

Fixes: 3f49d6842569 ("RDMA/irdma: Implement HW Admin Queue OPs")
Link: https://lore.kernel.org/r/20220307125928.GE16710@kili
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-03-14 20:31:12 -03:00
Mustafa Ismail
17850f2b0b RDMA/irdma: Remove incorrect masking of PD
The PD id is masked with 0x7fff, while PD can be 18 bits for GEN2 HW.
Remove the masking as it should not be needed and can cause incorrect PD
id to be used.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Link: https://lore.kernel.org/r/20220225163211.127-4-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-28 12:07:40 -04:00
Mustafa Ismail
b200189626 RDMA/irdma: Fix Passthrough mode in VM
Using PCI_FUNC macro in a VM, when the device is in passthrough mode does
not provide the real function instance. This means that currently, devices
will not probe unless the instance in the VM matches the instance in the
host.

Fix this by getting the pf_id from the LAN during the probe.

Fixes: 8498a30e1b94 ("RDMA/irdma: Register auxiliary driver and implement private channel OPs")
Link: https://lore.kernel.org/r/20220225163211.127-3-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-28 12:07:40 -04:00
Mustafa Ismail
6702bc1474 RDMA/irdma: Fix netdev notifications for vlan's
Currently, events on vlan netdevs are being ignored. Fix this by finding
the real netdev and processing the notifications for vlan netdevs.

Fixes: 915cc7ac0f8e ("RDMA/irdma: Add miscellaneous utility definitions")
Link: https://lore.kernel.org/r/20220225163211.127-2-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-28 12:07:40 -04:00
Zhu Yanjun
ea7596c1e5 RDMA/irdma: Make irdma_create_mg_ctx return a void
The function irdma_create_mg_ctx always returns 0, so make it void and
delete the return value check.

Link: https://lore.kernel.org/r/20220224182832.3896686-1-yanjun.zhu@linux.dev
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-28 11:32:42 -04:00
Zhu Yanjun
884194ef26 RDMA/irdma: Move union irdma_sockaddr to header file
The union irdma_sockaddr is used frequently. So move it to the header
file.

Link: https://lore.kernel.org/r/20220223024252.3873736-4-yanjun.zhu@linux.dev
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-23 20:38:56 -04:00
Zhu Yanjun
8627da62cc RDMA/irdma: Remove the unnecessary variable saddr
Firstly the variable saddr was to check the type of a network. Now the
variable net_type is used to do the same work. So it is removed.

Link: https://lore.kernel.org/r/20220223024252.3873736-3-yanjun.zhu@linux.dev
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-23 20:38:56 -04:00
Zhu Yanjun
80005c43d4 RDMA/irdma: Use net_type to check network type
The member variable net_type is to check the type of network.

Link: https://lore.kernel.org/r/20220223024252.3873736-2-yanjun.zhu@linux.dev
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-23 20:38:56 -04:00
Shiraz Saleem
2322d17abf RDMA/irdma: Remove excess error variables
As irdma_status_code is replaced with an int, there is no need for two
variables to hold error codes.

Remove the excess variable in functions where this occurs.  Also, remove
any redundant initializations which are no longer needed.

Link: https://lore.kernel.org/r/20220217151851.1518-4-shiraz.saleem@intel.com
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-23 15:24:19 -04:00
Shiraz Saleem
45225a93cc RDMA/irdma: Propagate error codes
All functions now return linux error codes. Propagate the return from
these functions as opposed to converting them to generic values.

Link: https://lore.kernel.org/r/20220217151851.1518-3-shiraz.saleem@intel.com
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-23 15:24:18 -04:00
Shiraz Saleem
2c4b14ea95 RDMA/irdma: Remove enum irdma_status_code
Replace use of custom irdma_status_code with linux error codes.

Remove enum irdma_status_code and header in which its defined.

Link: https://lore.kernel.org/r/20220217151851.1518-2-shiraz.saleem@intel.com
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-23 15:24:18 -04:00
Mustafa Ismail
4b860c9169 RDMA/irdma: Add support for DSCP
Add DSCP support for the Intel Ethernet 800 Series devices.  Setup VSI
DSCP info when PCI driver indicates DSCP mode during driver probe or as
notification event.

Link: https://lore.kernel.org/r/20220202191921.1638-4-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-08 12:54:47 -04:00
Mustafa Ismail
8348305532 RDMA/irdma: Refactor DCB bits in prep for DSCP support
Rename dcb flag to dcb_vlan_mode in irdma_device struct.  Add a new helper
function, irdma_set_qos_info, to set the VSI QoS information passed by the
PCI driver.

Link: https://lore.kernel.org/r/20220202191921.1638-3-shiraz.saleem@intel.com
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-02-08 12:54:47 -04:00