12 Commits

Author SHA1 Message Date
Kamal Heib
04567caf96 RDMA/bnxt_re: Fix kernel panic when trying to access bnxt_re_stat_descs
For some reason when introducing the fixed commit the "active_pds" and
"active_ahs" descriptors got dropped, which lead to the following panic
when trying to access the first entry in the descriptors.

 bnxt_re: Broadcom NetXtreme-C/E RoCE Driver
 BUG: kernel NULL pointer dereference, address: 0000000000000000
 CPU: 2 PID: 594 Comm: kworker/u32:1 Not tainted 5.15.0-rc6+ #2
 Hardware name: Dell Inc. PowerEdge R430/0CN7X8, BIOS 2.12.1 12/07/2020
 Workqueue: bnxt_re bnxt_re_task [bnxt_re]
 RIP: 0010:strlen+0x0/0x20
 Code: 48 89 f9 74 09 48 83 c1 01 80 39 00 75 f7 31 d2 44 0f b6 04 16 44 88 04 11 48 83 c2 01 45 84 c0 75 ee c3 0f 1f 80 00 00 00 00 <80> 3f 00 74 10 48 89 f8 48 83 c0 01 80 31
 RSP: 0018:ffffb25fc47dfbb0 EFLAGS: 00010246
 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000008100
 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
 RBP: 0000000000000000 R08: 00000000fffffff4 R09: 0000000000000000
 R10: ffff8a05c71fc028 R11: 0000000000000000 R12: 0000000000000000
 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8a05c3dee800
 FS:  0000000000000000(0000) GS:ffff8a092fc40000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000000 CR3: 000000048d3da001 CR4: 00000000001706e0
 Call Trace:
  kernfs_name_hash+0x12/0x80
  kernfs_find_ns+0x35/0xd0
  kernfs_remove_by_name_ns+0x32/0x90
  remove_files+0x2b/0x60
  create_files+0x1d3/0x1f0
  internal_create_group+0x17b/0x1f0
  internal_create_groups.part.0+0x3d/0xa0
  setup_port+0x180/0x3b0 [ib_core]
  ? __cond_resched+0x16/0x40
  ? kmem_cache_alloc_trace+0x278/0x3d0
  ib_setup_port_attrs+0x99/0x240 [ib_core]
  ib_register_device+0xcc/0x160 [ib_core]
  bnxt_re_task+0xba/0x170 [bnxt_re]
  process_one_work+0x1eb/0x390
  worker_thread+0x53/0x3d0
  ? process_one_work+0x390/0x390
  kthread+0x10f/0x130
  ? set_kthread_struct+0x40/0x40
  ret_from_fork+0x22/0x30

Fixes: 13f30b0fa0a9 ("RDMA/counter: Add a descriptor in struct rdma_hw_stats")
Link: https://lore.kernel.org/r/20211027205448.127821-1-kamalheib1@gmail.com
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Devesh Sharma <devesh.s.sharma@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-10-29 12:10:33 -03:00
Aharon Landau
13f30b0fa0 RDMA/counter: Add a descriptor in struct rdma_hw_stats
Add a counter statistic descriptor structure in rdma_hw_stats. In addition
to the counter name, more meta-information will be added.  This code
extension is needed for optional-counter support in the following patches.

Link: https://lore.kernel.org/r/20211008122439.166063-4-markzhang@nvidia.com
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-10-12 12:48:04 -03:00
Selvin Xavier
0cc4a9bdfc RDMA/bnxt_re: Update statistics counter name
Update a statistics counter name as the interface structure got updated.

Fixes: 9d6b648c3112 ("bnxt_en: Update firmware interface spec to 1.10.1.65.")
Link: https://lore.kernel.org/r/1631709163-2287-3-git-send-email-selvin.xavier@broadcom.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-09-20 13:37:00 -03:00
Selvin Xavier
9a381f7e5a RDMA/bnxt_re: Add extended statistics counters
Implement extended statistics counters for newer adapters. Check if the FW
support for this command and issue the FW command only if is
supported. Includes code re-organization to handle extended stats. Also,
add AH and PD software counters.

Link: https://lore.kernel.org/r/1631709163-2287-2-git-send-email-selvin.xavier@broadcom.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-09-20 13:37:00 -03:00
Jason Gunthorpe
4b5f4d3fb4 RDMA: Split the alloc_hw_stats() ops to port and device variants
This is being used to implement both the port and device global stats,
which is causing some confusion in the drivers. For instance EFA and i40iw
both seem to be misusing the device stats.

Split it into two ops so drivers that don't support one or the other can
leave the op NULL'd, making the calling code a little simpler to
understand.

Link: https://lore.kernel.org/r/1955c154197b2a159adc2dc97266ddc74afe420c.1623427137.git.leonro@nvidia.com
Tested-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-06-16 20:58:29 -03:00
Mark Bloch
1fb7f8973f RDMA: Support more than 255 rdma ports
Current code uses many different types when dealing with a port of a RDMA
device: u8, unsigned int and u32. Switch to u32 to clean up the logic.

This allows us to make (at least) the core view consistent and use the
same type. Unfortunately not all places can be converted. Many uverbs
functions expect port to be u8 so keep those places in order not to break
UAPIs.  HW/Spec defined values must also not be changed.

With the switch to u32 we now can support devices with more than 255
ports. U32_MAX is reserved to make control logic a bit easier to deal
with. As a device with U32_MAX ports probably isn't going to happen any
time soon this seems like a non issue.

When a device with more than 255 ports is created uverbs will report the
RDMA device as having 255 ports as this is the max currently supported.

The verbs interface is not changed yet because the IBTA spec limits the
port size in too many places to be u8 and all applications that relies in
verbs won't be able to cope with this change. At this stage, we are
extending the interfaces that are using vendor channel solely

Once the limitation is lifted mlx5 in switchdev mode will be able to have
thousands of SFs created by the device. As the only instance of an RDMA
device that reports more than 255 ports will be a representor device and
it exposes itself as a RAW Ethernet only device CM/MAD/IPoIB and other
ULPs aren't effected by this change and their sysfs/interfaces that are
exposes to userspace can remain unchanged.

While here cleanup some alignment issues and remove unneeded sanity
checks (mainly in rdmavt),

Link: https://lore.kernel.org/r/20210301070420.439400-1-leon@kernel.org
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-03-26 09:31:21 -03:00
Michael Chan
bfc6e5fbcb bnxt_en: Update firmware interface to 1.10.1.54.
Main changes are 200G support and fixing the definitions of discard and
error counters to match the hardware definitions.

Because the HWRM_PORT_PHY_QCFG message size has now exceeded the max.
encapsulated response message size of 96 bytes from the PF to the VF,
we now need to cap this message to 96 bytes for forwarding.  The forwarded
response only needs to contain the basic link status and speed information
and can be capped without adding the new information.

v2: Fix bnxt_re compile error.

Cc: Selvin Xavier <selvin.xavier@broadcom.com>
Reviewed-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-27 11:47:33 -07:00
Colin Ian King
d97a3e92f3 RDMA/bnxt_re: Fix spelling mistake "missin_resp" -> "missing_resp"
There is a spelling mistake in a literal string, fix it.

Fixes: 89f81008baac ("RDMA/bnxt_re: expose detailed stats retrieved from HW")
Link: https://lore.kernel.org/r/20190911092856.11146-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-09-16 10:58:57 -03:00
Selvin Xavier
316dd2825d RDMA/bnxt_re: Report out of sequence hw counters
Expose out of sequence errors received from FW.  This counter is a 32 bit
counter and driver has to accumulate the counter. Stores the previous
value for calculating the difference in the next query.

Also, update the HW statistics structure with new fields.

Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-10-16 00:03:50 -06:00
Selvin Xavier
5c80c9138e RDMA/bnxt_re: Expose rx discards and drop counters
Expose the RoCE discard and drop counters from the HW statistics context

Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-10-16 00:03:50 -06:00
Selvin Xavier
89f81008ba RDMA/bnxt_re: expose detailed stats retrieved from HW
Broadcom's adapter supports more granular statistics
to allow better understanding about the state of the
chip when data traffic is flowing.

Exposing the detailed stats to the consumer through
the standard hook available in the kverbs interface.
In order to retrieve all the information, driver
implements a firmware command.

Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-18 14:49:18 -05:00
Somnath Kotur
225937d6cc RDMA/bnxt_re: Implement the alloc/get_hw_stats callback
Expose HW counters using the get_hw_stats callback

Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-18 15:08:30 -04:00