Commit Graph

1366 Commits

Author SHA1 Message Date
Linus Torvalds
77fa2fbe87 vhost,virtio,vdpa: features, fixes, cleanups
vdpa/mlx5:
 	VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
 	new maintainer
 vdpa:
 	support for vq descriptor mappings
 	decouple reset of iotlb mapping from device reset
 
 fixes, cleanups all over the place
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "vhost,virtio,vdpa: features, fixes, cleanups.

  vdpa/mlx5:
   - VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
   - new maintainer

  vdpa:
   - support for vq descriptor mappings
   - decouple reset of iotlb mapping from device reset

  and fixes, cleanups all over the place"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (34 commits)
  vdpa_sim: implement .reset_map support
  vdpa/mlx5: implement .reset_map driver op
  vhost-vdpa: clean iotlb map during reset for older userspace
  vdpa: introduce .compat_reset operation callback
  vhost-vdpa: introduce IOTLB_PERSIST backend feature bit
  vhost-vdpa: reset vendor specific mapping to initial state in .release
  vdpa: introduce .reset_map operation callback
  virtio_pci: add check for common cfg size
  virtio-blk: fix implicit overflow on virtio_max_dma_size
  virtio_pci: add build offset check for the new common cfg items
  virtio: add definition of VIRTIO_F_NOTIF_CONFIG_DATA feature bit
  vduse: make vduse_class constant
  vhost-scsi: Spelling s/preceeding/preceding/g
  virtio: kdoc for struct virtio_pci_modern_device
  vdpa: Update sysfs ABI documentation
  MAINTAINERS: Add myself as mlx5_vdpa driver
  virtio-balloon: correct the comment of virtballoon_migratepage()
  mlx5_vdpa: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
  vdpa/mlx5: Update cvq iotlb mapping on ASID change
  vdpa/mlx5: Make iotlb helper functions more generic
  ...
2023-11-05 09:02:32 -10:00
Linus Torvalds
43468456c9 RDMA for v6.7
The usual collection of patches:
 
 - Bug fixes for hns, mlx5, and hfi1
 
 - Hardening patches for size_*, counted_by, strscpy
 
 - rts fixes from static analysis
 
 - Dump SRQ objects in rdma netlink, with hns support
 
 - Fix a performance regression in mlx5 MR deregistration
 
 - New XDR (200Gb/lane) link speed
 
 - SRQ record doorbell latency optimization for hns
 
 - IPSEC support for mlx5 multi-port mode
 
 - ibv_rereg_mr() support for irdma
 
 - Affiliated event support for bnxt_re
 
 - Opt out for the spec compliant qkey security enforcement as we
   discovered SW that breaks under enforcement
 
 - Comment and trivial updates
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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:
 "Nothing exciting this cycle, most of the diffstat is changing SPDX
  'or' to 'OR'.

  Summary:

   - Bugfixes for hns, mlx5, and hfi1

   - Hardening patches for size_*, counted_by, strscpy

   - rts fixes from static analysis

   - Dump SRQ objects in rdma netlink, with hns support

   - Fix a performance regression in mlx5 MR deregistration

   - New XDR (200Gb/lane) link speed

   - SRQ record doorbell latency optimization for hns

   - IPSEC support for mlx5 multi-port mode

   - ibv_rereg_mr() support for irdma

   - Affiliated event support for bnxt_re

   - Opt out for the spec compliant qkey security enforcement as we
     discovered SW that breaks under enforcement

   - Comment and trivial updates"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (50 commits)
  IB/mlx5: Fix init stage error handling to avoid double free of same QP and UAF
  RDMA/mlx5: Fix mkey cache WQ flush
  RDMA/hfi1: Workaround truncation compilation error
  IB/hfi1: Fix potential deadlock on &irq_src_lock and &dd->uctxt_lock
  RDMA/core: Remove NULL check before dev_{put, hold}
  RDMA/hfi1: Remove redundant assignment to pointer ppd
  RDMA/mlx5: Change the key being sent for MPV device affiliation
  RDMA/bnxt_re: Fix clang -Wimplicit-fallthrough in bnxt_re_handle_cq_async_error()
  RDMA/hns: Fix init failure of RoCE VF and HIP08
  RDMA/hns: Fix unnecessary port_num transition in HW stats allocation
  RDMA/hns: The UD mode can only be configured with DCQCN
  RDMA/hns: Add check for SL
  RDMA/hns: Fix signed-unsigned mixed comparisons
  RDMA/hns: Fix uninitialized ucmd in hns_roce_create_qp_common()
  RDMA/hns: Fix printing level of asynchronous events
  RDMA/core: Add support to set privileged QKEY parameter
  RDMA/bnxt_re: Do not report SRQ error in srq notification
  RDMA/bnxt_re: Report async events and errors
  RDMA/bnxt_re: Update HW interface headers
  IB/mlx5: Fix rdma counter binding for RAW QP
  ...
2023-11-02 15:20:30 -10:00
Dragos Tatulea
03dd63c8fa vdpa/mlx5: Enable hw support for vq descriptor mapping
Vq descriptor mappings are supported in hardware by filling in an
additional mkey which contains the descriptor mappings to the hw vq.

A previous patch in this series added support for hw mkey (mr) creation
for ASID 1.

This patch fills in both the vq data and vq descriptor mkeys based on
group ASID mapping.

The feature is signaled to the vdpa core through the presence of the
.get_vq_desc_group op.

Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Message-Id: <20231018171456.1624030-16-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com>
Tested-by: Si-Wei Liu <si-wei.liu@oracle.com>
Tested-by: Lei Yang <leiyang@redhat.com>
2023-11-01 09:19:57 -04:00
Yue Haibing
0d2d6bc7e7 net/mlx5: Remove unused declaration
Commit 2ac9cfe782 ("net/mlx5e: IPSec, Add Innova IPSec offload TX data path")
declared mlx5e_ipsec_inverse_table_init() but never implemented it.
Commit f52f2faee5 ("net/mlx5e: Introduce flow steering API")
declared mlx5e_fs_set_tc() but never implemented it.
Commit f2f3df5501 ("net/mlx5: EQ, Privatize eq_table and friends")
declared mlx5_eq_comp_cpumask() but never implemented it.
Commit cac1eb2cf2 ("net/mlx5: Lag, properly lock eswitch if needed")
removed mlx5_lag_update() but not its declaration.
Commit 35ba005d82 ("net/mlx5: DR, Set flex parser for TNL_MPLS dynamically")
removed mlx5dr_ste_build_tnl_mpls() but not its declaration.

Commit e126ba97db ("mlx5: Add driver for Mellanox Connect-IB adapters")
declared but never implemented mlx5_alloc_cmd_mailbox_chain() and mlx5_free_cmd_mailbox_chain().
Commit 0cf53c1247 ("net/mlx5: FWPage, Use async events chain")
removed mlx5_core_req_pages_handler() but not its declaration.
Commit 938fe83c8d ("net/mlx5_core: New device capabilities handling")
removed mlx5_query_odp_caps() but not its declaration.
Commit f6a8a19bb1 ("RDMA/netdev: Hoist alloc_netdev_mqs out of the driver")
removed mlx5_rdma_netdev_alloc() but not its declaration.

Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-10-14 10:16:31 -07:00
Shay Drory
e534552c92 net/mlx5: Refactor LAG peer device lookout bus logic to mlx5 devcom
LAG peer device lookout bus logic required the usage of global lock,
mlx5_intf_mutex.
As part of the effort to remove this global lock, refactor LAG peer
device lookout to use mlx5 devcom layer.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-10-14 10:16:30 -07:00
Wei Zhang
3f7f31fff2 net/mlx5: Parallelize vhca event handling
At present, mlx5 driver have a general purpose
event handler which not only handles vhca event
but also many other events. This incurs a huge
bottleneck because the event handler is
implemented by single threaded workqueue and all
events are forced to be handled in serial manner
even though application tries to create multiple
SFs simultaneously.

Introduce a dedicated vhca event handler which
manages SFs parallel creation.

Signed-off-by: Wei Zhang <weizhang@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-10-14 10:16:29 -07:00
Jakub Kicinski
1bc60524ca Merge branch 'mlx5-next' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
Leon Romanovsky says:

====================
This PR is collected from
https://lore.kernel.org/all/cover.1695296682.git.leon@kernel.org

This series from Patrisious extends mlx5 to support IPsec packet offload
in multiport devices (MPV, see [1] for more details).

These devices have single flow steering logic and two netdev interfaces,
which require extra logic to manage IPsec configurations as they performed
on netdevs.

[1] https://lore.kernel.org/linux-rdma/20180104152544.28919-1-leon@kernel.org/

* 'mlx5-next' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux:
  net/mlx5: Handle IPsec steering upon master unbind/bind
  net/mlx5: Configure IPsec steering for ingress RoCEv2 MPV traffic
  net/mlx5: Configure IPsec steering for egress RoCEv2 MPV traffic
  net/mlx5: Add create alias flow table function to ipsec roce
  net/mlx5: Implement alias object allow and create functions
  net/mlx5: Add alias flow table bits
  net/mlx5: Store devcom pointer inside IPsec RoCE
  net/mlx5: Register mlx5e priv to devcom in MPV mode
  RDMA/mlx5: Send events from IB driver about device affiliation state
  net/mlx5: Introduce ifc bits for migration in a chunk mode

====================

Link: https://lore.kernel.org/r/20231002083832.19746-1-leon@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-13 09:35:34 -07:00
Leon Romanovsky
16419098e8 IPsec packet offload support in multiport RoCE devices
This series from Patrisious extends mlx5 to support IPsec packet offload
in multiport devices (MPV, see [1] for more details).

These devices have single flow steering logic and two netdev interfaces,
which require extra logic to manage IPsec configurations as they performed
on netdevs.

Thanks

[1] https://lore.kernel.org/linux-rdma/20180104152544.28919-1-leon@kernel.org/

Link: https://lore.kernel.org/all/20231002083832.19746-1-leon@kernel.org
Signed-of-by: Leon Romanovsky <leon@kernel.org>

* mlx5-next: (576 commits)
  net/mlx5: Handle IPsec steering upon master unbind/bind
  net/mlx5: Configure IPsec steering for ingress RoCEv2 MPV traffic
  net/mlx5: Configure IPsec steering for egress RoCEv2 MPV traffic
  net/mlx5: Add create alias flow table function to ipsec roce
  net/mlx5: Implement alias object allow and create functions
  net/mlx5: Add alias flow table bits
  net/mlx5: Store devcom pointer inside IPsec RoCE
  net/mlx5: Register mlx5e priv to devcom in MPV mode
  RDMA/mlx5: Send events from IB driver about device affiliation state
  net/mlx5: Introduce ifc bits for migration in a chunk mode
  Linux 6.6-rc3
  ...
2023-10-04 21:21:49 +03:00
Dragos Tatulea
d424348b06 vdpa/mlx5: Expose descriptor group mkey hw capability
Necessary for improved live migration flow. Actual support will be added
in a downstream patch.

Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Link: https://lore.kernel.org/r/20230928164550.980832-3-dtatulea@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2023-10-02 13:12:05 +03:00
Patrisious Haddad
ef36ffcb38 net/mlx5: Add alias flow table bits
Add all the capabilities needed to check for alias object support.
As well as all the fields or commands needed for its creation and
the creation of flow table that is able to jump to an alias object.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Link: https://lore.kernel.org/r/544c030f2a78c4adf3fe6b64f97a39cc1bbdabb9.1695296682.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2023-10-02 11:21:11 +03:00
Patrisious Haddad
0d293714ac RDMA/mlx5: Send events from IB driver about device affiliation state
Send blocking events from IB driver whenever the device is done being
affiliated or if it is removed from an affiliation.

This is useful since now the EN driver can register to those event and
know when a device is affiliated or not.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Link: https://lore.kernel.org/r/a7491c3e483cfd8d962f5f75b9a25f253043384a.1695296682.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2023-10-02 11:20:59 +03:00
Yishai Hadas
5aa4c9608d net/mlx5: Introduce ifc bits for migration in a chunk mode
Introduce ifc related stuff to enable migration in a chunk mode.

Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Link: https://lore.kernel.org/r/20230911093856.81910-2-yishaih@nvidia.com
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2023-09-28 13:58:38 +03:00
Patrisious Haddad
b28ad32442 IB/mlx5: Rename 400G_8X speed to comply to naming convention
Rename 400G_8X speed to comply to naming convention.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Mark Zhang <markzhang@nvidia.com>
Link: https://lore.kernel.org/r/ac98447cac8379a43fbdb36d56e5fb2b741a97ff.1695204156.git.leon@kernel.org
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2023-09-26 12:38:50 +03:00
Patrisious Haddad
948f0bf5ad IB/mlx5: Add support for 800G_8X lane speed
Add a check for 800G_8X speed when querying PTYS and report it back
correctly when needed.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Mark Zhang <markzhang@nvidia.com>
Link: https://lore.kernel.org/r/26fd0b6e1fac071c3eb779657bb3d8ba47f47c4f.1695204156.git.leon@kernel.org
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2023-09-26 12:38:46 +03:00
Moshe Shemesh
e0cc92fd94 net/mlx5: Add a health error syndrome for pci data poisoned
Add new health error syndrome to indicate that pci data poisoned error
has been received while fetching device ICM data.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-09-19 23:33:08 -07:00
Erez Shitrit
653b7eb9d7 net/mlx5: Bridge, Enable mcast in smfs steering mode
In order to have mcast offloads the driver needs the following:
It should know if that mcast comes from wire port, in addition the flow
should not be marked as any specific source, that way it will give the
flexibility for the driver not to be depended on the way iterator
implemented in the FW.

Signed-off-by: Erez Shitrit <erezsh@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-09-19 23:33:08 -07:00
Jiri Pirko
ac5f395685 net/mlx5: SF, Implement peer devlink set for SF representor devlink port
Benefit from the existence of internal mlx5 notifier and extend it by
event MLX5_DRIVER_EVENT_SF_PEER_DEVLINK. Use this event from SF
auxiliary device probe/remove functions to pass the registered SF
devlink instance to the SF representor.

Process the new event in SF representor code and call
devl_port_fn_devlink_set() to do the assignments. Implement this in work
to avoid possible deadlock when probe/remove function of SF may be
called with devlink instance lock held during devlink reload.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-17 14:01:47 +01:00
Jiri Pirko
496fd0a26b mlx5: Implement SyncE support using DPLL infrastructure
Implement SyncE support using newly introduced DPLL support.
Make sure that each PFs/VFs/SFs probed with appropriate capability
will spawn a dpll auxiliary device and register appropriate dpll device
and pin instances.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-17 11:50:20 +01:00
Leon Romanovsky
8efd7b17a3 net/mlx5: Provide an interface to block change of IPsec capabilities
mlx5 HW can't perform IPsec offload operation simultaneously both on PF
and VFs at the same time. While the previous patches added devlink knobs
to change IPsec capabilities dynamically, there is a need to add a logic
to block such IPsec capabilities for the cases when IPsec is already
configured.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Link: https://lore.kernel.org/r/20230825062836.103744-7-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-27 17:08:45 -07:00
Leon Romanovsky
17c8da5a34 net/mlx5: Add IFC bits to support IPsec enable/disable
Add hardware definitions to allow to control IPSec capabilities.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Link: https://lore.kernel.org/r/20230825062836.103744-6-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-27 17:08:45 -07:00
Jakub Kicinski
3c5066c6b0 Merge branch 'mlx5-next' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
Leon Romanovsky says:

====================
mlx5 MACsec RoCEv2 support

From Patrisious:

This series extends previously added MACsec offload support
to cover RoCE traffic either.

In order to achieve that, we need configure MACsec with offload between
the two endpoints, like below:

REMOTE_MAC=10:70:fd:43:71:c0

* ip addr add 1.1.1.1/16 dev eth2
* ip link set dev eth2 up
* ip link add link eth2 macsec0 type macsec encrypt on
* ip macsec offload macsec0 mac
* ip macsec add macsec0 tx sa 0 pn 1 on key 00 dffafc8d7b9a43d5b9a3dfbbf6a30c16
* ip macsec add macsec0 rx port 1 address $REMOTE_MAC
* ip macsec add macsec0 rx port 1 address $REMOTE_MAC sa 0 pn 1 on key 01 ead3664f508eb06c40ac7104cdae4ce5
* ip addr add 10.1.0.1/16 dev macsec0
* ip link set dev macsec0 up

And in a similar manner on the other machine, while noting the keys order
would be reversed and the MAC address of the other machine.

RDMA traffic is separated through relevant GID entries and in case
of IP ambiguity issue - meaning we have a physical GIDs and a MACsec
GIDs with the same IP/GID, we disable our physical GID in order
to force the user to only use the MACsec GID.

v0: https://lore.kernel.org/netdev/20230813064703.574082-1-leon@kernel.org/

* 'mlx5-next' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux:
  RDMA/mlx5: Handles RoCE MACsec steering rules addition and deletion
  net/mlx5: Add RoCE MACsec steering infrastructure in core
  net/mlx5: Configure MACsec steering for ingress RoCEv2 traffic
  net/mlx5: Configure MACsec steering for egress RoCEv2 traffic
  IB/core: Reorder GID delete code for RoCE
  net/mlx5: Add MACsec priorities in RDMA namespaces
  RDMA/mlx5: Implement MACsec gid addition and deletion
  net/mlx5: Maintain fs_id xarray per MACsec device inside macsec steering
  net/mlx5: Remove netdevice from MACsec steering
  net/mlx5e: Move MACsec flow steering and statistics database from ethernet to core
  net/mlx5e: Rename MACsec flow steering functions/parameters to suit core naming style
  net/mlx5: Remove dependency of macsec flow steering on ethernet
  net/mlx5e: Move MACsec flow steering operations to be used as core library
  macsec: add functions to get macsec real netdevice and check offload
====================

Link: https://lore.kernel.org/r/20230821073833.59042-1-leon@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-24 11:32:18 -07:00
Patrisious Haddad
58dbd6428a RDMA/mlx5: Handles RoCE MACsec steering rules addition and deletion
Add RoCE MACsec rules when a gid is added for the MACsec netdevice and
handle their cleanup when the gid is removed or the MACsec SA is deleted.
Also support alias IP for the MACsec device, as long as we don't have
more ips than what the gid table can hold.
In addition handle the case where a gid is added but there are still no
SAs added for the MACsec device, so the rules are added later on when
the SAs are added.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
2023-08-20 12:35:24 +03:00
Patrisious Haddad
ac7ea1c78f net/mlx5: Add RoCE MACsec steering infrastructure in core
Adds all the core steering helper functions that are needed in order
to setup RoCE steering rules which includes both the RX and TX rules
addition and deletion.
As well as exporting the function to be ready to use from the IB driver
where we expose functions to allow deletion of all rules, which is
needed when a GID is deleted, or a deletion of a specific rule when an SA
is deleted, and a similar manner for the rules addition.

These functions are used in a later patch by IB driver to trigger the
rules addition/deletion when needed.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
2023-08-20 12:35:24 +03:00
Patrisious Haddad
afcb21d5a8 net/mlx5: Add MACsec priorities in RDMA namespaces
Add MACsec flow steering priorities in RDMA namespaces. This allows
adding tables/rules to forward RoCEv2 traffic to the MACsec crypto
tables in NIC_TX domain, and accept RoCEv2 traffic from NIC_RX domain.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
2023-08-20 12:35:24 +03:00
Patrisious Haddad
758ce14aee RDMA/mlx5: Implement MACsec gid addition and deletion
Handle MACsec IP ambiguity issue, since mlx5 hw can't support
programming both the MACsec and the physical gid when they have the same
IP address, because it wouldn't know to whom to steer the traffic.
Hence in such case we delete the physical gid from the hw gid table,
which would then cause all traffic sent over it to fail, and we'll only
be able to send traffic over the MACsec gid.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Raed Salem <raeds@nvidia.com>
Reviewed-by: Mark Zhang <markzhang@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
2023-08-20 12:35:24 +03:00
Patrisious Haddad
2e92f669b8 net/mlx5e: Move MACsec flow steering and statistics database from ethernet to core
Since now MACsec flow steering (macsec_fs) and MACsec statistics (stats)
are maintained by the core driver, move their data as well to be saved
inside core structures instead of staying part of ethernet MACsec database.

In addition cleanup all MACsec stats functions from the ethernet MACsec
code and move what's needed to be part of macsec_fs instead.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
2023-08-20 12:35:23 +03:00
Shay Drory
a41cb59117 net/mlx5: Remove unused MAX HCA capabilities
Each device cap has two modes: MAX and CUR. The driver maintains a
cache of both modes of the capabilities. For most device caps, the MAX
cap mode is never used.

Hence, remove all driver queries of the MAX mode of the said caps as
well as their helper MACROs.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Maher Sanalla <msanalla@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-08-14 14:40:22 -07:00
Shay Drory
0b4eb603d6 net/mlx5: Remove unused CAPs
mlx5 driver queries the device for VECTOR_CALC and SHAMPO caps, but
there isn't any user who requires them.
As well as, MLX5_MCAM_REGS_0x9080_0x90FF is queried but not used.

Thus, drop all usages and definitions of the mentioned caps above.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Maher Sanalla <msanalla@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-08-14 14:40:22 -07:00
Moshe Shemesh
a9f168e4c6 net/mlx5: Check with FW that sync reset completed successfully
Even if the PF driver had no error on his part of the sync reset flow,
the firmware can see wider picture as it syncs all the PFs in the flow.
So add at end of sync reset flow check with firmware by reading MFRL
register and initialization segment that the flow had no issue from
firmware point of view too.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-08-14 14:40:21 -07:00
Adham Faris
1f507e80c7 net/mlx5: Expose NIC temperature via hardware monitoring kernel API
Expose NIC temperature by implementing hwmon kernel API, which turns
current thermal zone kernel API to redundant.

For each one of the supported and exposed thermal diode sensors, expose
the following attributes:
1) Input temperature.
2) Highest temperature.
3) Temperature label:
   Depends on the firmware capability, if firmware doesn't support
   sensors naming, the fallback naming convention would be: "sensorX",
   where X is the HW spec (MTMP register) sensor index.
4) Temperature critical max value:
   refers to the high threshold of Warning Event. Will be exposed as
   `tempY_crit` hwmon attribute (RO attribute). For example for
   ConnectX5 HCA's this temperature value will be 105 Celsius, 10
   degrees lower than the HW shutdown temperature).
5) Temperature reset history: resets highest temperature.

For example, for dualport ConnectX5 NIC with a single IC thermal diode
sensor will have 2 hwmon directories (one for each PCI function)
under "/sys/class/hwmon/hwmon[X,Y]".

Listing one of the directories above (hwmonX/Y) generates the
corresponding output below:

$ grep -H -d skip . /sys/class/hwmon/hwmon0/*

Output
=======================================================================
/sys/class/hwmon/hwmon0/name:mlx5
/sys/class/hwmon/hwmon0/temp1_crit:105000
/sys/class/hwmon/hwmon0/temp1_highest:48000
/sys/class/hwmon/hwmon0/temp1_input:46000
/sys/class/hwmon/hwmon0/temp1_label:asic
grep: /sys/class/hwmon/hwmon0/temp1_reset_history: Permission denied

In addition, displaying the sensors data via lm_sensors generates the
corresponding output below:

$ sensors

Output
=======================================================================
mlx5-pci-0800
Adapter: PCI adapter
asic:         +46.0°C  (crit = +105.0°C, highest = +48.0°C)

mlx5-pci-0801
Adapter: PCI adapter
asic:         +46.0°C  (crit = +105.0°C, highest = +48.0°C)

CC: Jean Delvare <jdelvare@suse.com>
Signed-off-by: Adham Faris <afaris@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20230807180507.22984-3-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-09 15:52:16 -07:00
Maher Sanalla
f14c1a14e6 net/mlx5: Allocate completion EQs dynamically
This commit enables the dynamic allocation of EQs at runtime, allowing
for more flexibility in managing completion EQs and reducing the memory
overhead of driver load. Whenever a CQ is created for a given vector
index, the driver will lookup to see if there is an already mapped
completion EQ for that vector, if so, utilize it. Otherwise, allocate a
new EQ on demand and then utilize it for the CQ completion events.

Add a protection lock to the EQ table to protect from concurrent EQ
creation attempts.

While at it, replace mlx5_vector2irqn()/mlx5_vector2eqn() with
mlx5_comp_eqn_get() and mlx5_comp_irqn_get() which will allocate an
EQ on demand if no EQ is found for the given vector.

Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-08-07 10:53:52 -07:00
Maher Sanalla
674dd4e2e0 net/mlx5: Rename mlx5_comp_vectors_count() to mlx5_comp_vectors_max()
To accurately represent its purpose, rename the function that retrieves
the value of maximum vectors from mlx5_comp_vectors_count() to
mlx5_comp_vectors_max().

Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-08-07 10:53:51 -07:00
Maher Sanalla
f3147015fa net/mlx5: Add IRQ vector to CPU lookup function
Currently, once driver load completes, IRQ requests were performed for all
vectors. However, as we move to support dynamic creation of EQs, this will
not be the case as some IRQs will not exist at this stage. Thus, in such
case, use the default CPU to IRQ mapping which is the serial mapping based
on IRQ vector index. Meaning, the n'th vector gets mapped to the n'th CPU.

Introduce an API function mlx5_comp_vector_cpu() that takes an IRQ index and
provides the corresponding CPU mapping. It utilizes the existing IRQ
affinity if defined, or resorts to the default serialized CPU mapping
otherwise.

Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-08-07 10:53:51 -07:00
Jianbo Liu
c8e350e62f net/mlx5e: Make TC and IPsec offloads mutually exclusive on a netdev
For IPsec packet offload mode, the order of TC offload and IPsec
offload on the same netdevice is not aligned with the order in the
non-offload software. For example, for RX, the software performs TC
first and then IPsec transformation, but the implementation for
offload does that in the opposite way.

To resolve the difference for now, either IPsec offload or TC offload,
not both, is allowed for a specific interface.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/8e2e5e3b0984d785066e8663aaf97b3ba1bb873f.1690802064.git.leon@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-02 18:37:30 -07:00
Jianbo Liu
c6c2bf5db4 net/mlx5e: Support IPsec packet offload for TX in switchdev mode
The IPsec encryption is done at the last, so add new prio for IPsec
offload in FDB, and put it just lower than the slow path prio and
higher than the per-vport prio.
Three levels are added for TX. The first one is for ip xfrm policy.
The sa table is created in the second level for ip xfrm state. The
status table is created at the last to count the number of packets
encrypted.
The rules, which forward packets to uplink, are changed to forward
them to IPsec TX tables first. These rules are restored after those
tables are destroyed, which is done immediately when there is no
reference to them, just as what does in legacy mode. The support for
slow path is added here, by refreshing uplink's channels. But, the
handling for TC fast path, which is more complicated, will be added
later. Besides, reg c4 is used instead to match reqid.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/cfd0e6ffaf0b8c55ebaa9fb0649b7c504b6b8ec6.1690802064.git.leon@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-02 18:37:29 -07:00
Jianbo Liu
91bafc638e net/mlx5e: Handle IPsec offload for RX datapath in switchdev mode
Reuse tun opts bits in reg c1, to pass IPsec obj id to datapath.
As this is only for RX SA and there are only 11 bits, xarray is used
to map IPsec obj id to an index, which is between 1 and 0x7ff, and
replace obj id to write to reg c1.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/43d60fbcc9cd672a97d7e2a2f7fe6a3d9e9a776d.1690802064.git.leon@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-02 18:37:29 -07:00
Jianbo Liu
1762f132d5 net/mlx5e: Support IPsec packet offload for RX in switchdev mode
As decryption must be done first, add new prio for IPsec offload in
FDB, and put it just lower than BYPASS prio and higher than TC prio.
Three levels are added for RX. The first one is for ip xfrm policy. SA
table is created in the second level for ip xfrm state. The status
table is created in the last to check the decryption result. If
success, packets continue with the next process, or dropped otherwise.
For now, the set of reg c1 is removed for swtichdev mode, and the
datapath process will be added in the next patch.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/c91063554cf643fb50b99cf093e8a9bf11729de5.1690802064.git.leon@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-02 18:37:29 -07:00
Shay Drory
b90ebfc018 net/mlx5: Allocate command stats with xarray
Command stats is an array with more than 2K entries, which amounts to
~180KB. This is way more than actually needed, as only ~190 entries
are being used.

Therefore, replace the array with xarray.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-07-27 11:37:29 -07:00
Shay Drory
58db72869a net/mlx5: Re-organize mlx5_cmd struct
Downstream patch will split mlx5_cmd_init() to probe and reload
routines. As a preparation, organize mlx5_cmd struct so that any
field that will be used in the reload routine are grouped at new
nested struct.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-07-27 11:37:29 -07:00
Roi Dayan
88d162b479 net/mlx5: Devcom, Infrastructure changes
Update devcom infrastructure to be more generic, without
depending on max supported ports definition or a device guid,
and also more encapsulated so callers don't need to pass
the register devcom component id per event call.

Signed-off-by: Eli Cohen <elic@nvidia.com>
Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-07-27 11:37:28 -07:00
Leon Romanovsky
5726628127 net/mlx5: Add relevant capabilities bits to support NAT-T
Provide an ability to check if flow steering supports UDP
encapsulation and decapsulation of IPsec ESP packets.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-07-25 15:08:57 +02:00
Linus Torvalds
7ede5f78a0 v6.5 merge window RDMA pull request
This cycle saw a focus on rxe and bnxt_re drivers:
 
 - Code cleanups for irdma, rxe, rtrs, hns, vmw_pvrdma
 
 - rxe uses workqueues instead of tasklets
 
 - rxe has better compliance around access checks for MRs and rereg_mr
 
 - mana supportst he 'v2' FW interface for RX coalescing
 
 - hfi1 bug fix for stale cache entries in its MR cache
 
 - mlx5 buf fix to handle FW failures when destroying QPs
 
 - erdma HW has a new doorbell allocation mechanism for uverbs that is
   secure
 
 - Lots of small cleanups and rework in bnxt_re
    * Use the common mmap functions
    * Support disassociation
    * Improve FW command flow
 
 - bnxt_re support for "low latency push", this allows a packet
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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 saw a focus on rxe and bnxt_re drivers:

   - Code cleanups for irdma, rxe, rtrs, hns, vmw_pvrdma

   - rxe uses workqueues instead of tasklets

   - rxe has better compliance around access checks for MRs and rereg_mr

   - mana supportst he 'v2' FW interface for RX coalescing

   - hfi1 bug fix for stale cache entries in its MR cache

   - mlx5 buf fix to handle FW failures when destroying QPs

   - erdma HW has a new doorbell allocation mechanism for uverbs that is
     secure

   - Lots of small cleanups and rework in bnxt_re:
       - Use the common mmap functions
       - Support disassociation
       - Improve FW command flow
       - support for 'low latency push'"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (71 commits)
  RDMA/bnxt_re: Fix an IS_ERR() vs NULL check
  RDMA/bnxt_re: Fix spelling mistake "priviledged" -> "privileged"
  RDMA/bnxt_re: Remove duplicated include in bnxt_re/main.c
  RDMA/bnxt_re: Refactor code around bnxt_qplib_map_rc()
  RDMA/bnxt_re: Remove incorrect return check from slow path
  RDMA/bnxt_re: Enable low latency push
  RDMA/bnxt_re: Reorg the bar mapping
  RDMA/bnxt_re: Move the interface version to chip context structure
  RDMA/bnxt_re: Query function capabilities from firmware
  RDMA/bnxt_re: Optimize the bnxt_re_init_hwrm_hdr usage
  RDMA/bnxt_re: Add disassociate ucontext support
  RDMA/bnxt_re: Use the common mmap helper functions
  RDMA/bnxt_re: Initialize opcode while sending message
  RDMA/cma: Remove NULL check before dev_{put, hold}
  RDMA/rxe: Simplify cq->notify code
  RDMA/rxe: Fixes mr access supported list
  RDMA/bnxt_re: optimize the parameters passed to helper functions
  RDMA/bnxt_re: remove redundant cmdq_bitmap
  RDMA/bnxt_re: use firmware provided max request timeout
  RDMA/bnxt_re: cancel all control path command waiters upon error
  ...
2023-06-29 21:01:17 -07:00
Jason Gunthorpe
5f004bcaee Linux 6.4
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Merge tag 'v6.4' into rdma.git for-next

Linux 6.4

Resolve conflicts between rdma rc and next in rxe_cq matching linux-next:

drivers/infiniband/sw/rxe/rxe_cq.c:
  https://lore.kernel.org/r/20230622115246.365d30ad@canb.auug.org.au

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2023-06-27 14:06:29 -03:00
Lama Kayal
9ee473c259 net/mlx5: Fix reserved at offset in hca_cap register
A member of struct mlx5_ifc_cmd_hca_cap_bits has been mistakenly
assigned the wrong reserved_at offset value. Correct it to align to the
right value, thus avoid future miscalculation.

Signed-off-by: Lama Kayal <lkayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-06-23 12:27:33 -07:00
Or Har-Toov
0bd2e6fc78 net/mlx5: Expose bits for local loopback counter
Add needed HW bits for querying local loopback counter and the
HCA capability for it.

Signed-off-by: Or Har-Toov <ohartoov@nvidia.com>
Reviewed-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-06-16 12:02:08 -07:00
Moshe Shemesh
7a9770f1bf net/mlx5: Handle sync reset unload event
Added a new event handler to firmware sync reset, which is used to
support firmware sync reset flow on smart NIC. Adding this new stage to
the flow enables the firmware to ensure host PFs unload before ECPFs
unload, to avoid race of PFs recovery.

If firmware sends sync_reset_unload event to driver the driver should
unload and close all HW resources of the function. Once the driver
finishes unloading part, it can't get any more events from firmware as
event queues are closed, so it polls the reset state field to know when
to continue to next stage of the sync reset flow.

Added capability bit for supporting sync_reset_unload event.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-06-16 12:02:07 -07:00
Moshe Shemesh
8bb42ed421 net/mlx5: Expose timeout for sync reset unload stage
Expose new timoueout in Default Timeouts Register to be used on sync
reset flow running on smart NIC. In this flow the driver should know how
much time to wait from getting unload request till firmware will ask the
PF to continue to next stage of the flow.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-06-16 12:02:06 -07:00
Jakub Kicinski
173780ff18 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.

Conflicts:

include/linux/mlx5/driver.h
  617f5db1a6 ("RDMA/mlx5: Fix affinity assignment")
  dc13180824 ("net/mlx5: Enable devlink port for embedded cpu VF vports")
https://lore.kernel.org/all/20230613125939.595e50b8@canb.auug.org.au/

tools/testing/selftests/net/mptcp/mptcp_join.sh
  47867f0a7e ("selftests: mptcp: join: skip check if MIB counter not supported")
  425ba80312 ("selftests: mptcp: join: support RM_ADDR for used endpoints or not")
  45b1a1227a ("mptcp: introduces more address related mibs")
  0639fa230a ("selftests: mptcp: add explicit check for new mibs")
https://lore.kernel.org/netdev/20230609-upstream-net-20230610-mptcp-selftests-support-old-kernels-part-3-v1-0-2896fe2ee8a3@tessares.net/

No adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-15 22:19:41 -07:00
Linus Torvalds
93fd8eb053 v6.4 second rc RDMA pull request
Many rc bug fixes:
 
 - Two rtrs bug fixes for error unwind bugs
 
 - Several rxe bug fixes:
    * Incorrect Rx packet validation
    * Using memory without a refcount
    * Syzkaller found use before initialization
    * Regression fix for missing locking with the tasklet conversion from
      this merge window
 
 - Have bnxt report the correct link properties to userspace, this was
   a regression in v6.3
 
 - Several mlx5 bug fixes:
    * Kernel crash triggerable by userspace for the RAW ethernet profile
    * Defend against steering refcounting issues created by userspace
    * Incorrect change of QP port affinity parameters in some LAG configurations
 
 - Fix mlx5 Q counters:
    * Do not over allocate Q counters to allow userspace to use the full
      port capacity
    * Kernel crash triggered by eswitch due to mis-use of Q counters
    * Incorrect mlx5_device for Q counters in some LAG configurations
 
 - Properly implement the IBA spec restricting privileged qkeys to root
 
 - Always an error when reading from a disassociated device's event queue
 
 - isert bug fixes:
    * Avoid a deadlock with the CM handler and CM ID destruction
    * Correct list corruption due to incorrect locking
    * Fix a use after free around connection tear down
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "This is an unusually large bunch of bug fixes for the later rc cycle,
  rxe and mlx5 both dumped a lot of things at once. rxe continues to fix
  itself, and mlx5 is fixing a bunch of "queue counters" related bugs.

  There is one highly notable bug fix regarding the qkey. This small
  security check was missed in the original 2005 implementation and it
  allows some significant issues.

  Summary:

   - Two rtrs bug fixes for error unwind bugs

   - Several rxe bug fixes:
      * Incorrect Rx packet validation
      * Using memory without a refcount
      * Syzkaller found use before initialization
      * Regression fix for missing locking with the tasklet conversion
        from this merge window

   - Have bnxt report the correct link properties to userspace, this was
     a regression in v6.3

   - Several mlx5 bug fixes:
      * Kernel crash triggerable by userspace for the RAW ethernet
        profile
      * Defend against steering refcounting issues created by userspace
      * Incorrect change of QP port affinity parameters in some LAG
        configurations

   - Fix mlx5 Q counters:
      * Do not over allocate Q counters to allow userspace to use the
        full port capacity
      * Kernel crash triggered by eswitch due to mis-use of Q counters
      * Incorrect mlx5_device for Q counters in some LAG configurations

   - Properly implement the IBA spec restricting privileged qkeys to
     root

   - Always an error when reading from a disassociated device's event
     queue

   - isert bug fixes:
      * Avoid a deadlock with the CM handler and CM ID destruction
      * Correct list corruption due to incorrect locking
      * Fix a use after free around connection tear down"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/rxe: Fix rxe_cq_post
  IB/isert: Fix incorrect release of isert connection
  IB/isert: Fix possible list corruption in CMA handler
  IB/isert: Fix dead lock in ib_isert
  RDMA/mlx5: Fix affinity assignment
  IB/uverbs: Fix to consider event queue closing also upon non-blocking mode
  RDMA/uverbs: Restrict usage of privileged QKEYs
  RDMA/cma: Always set static rate to 0 for RoCE
  RDMA/mlx5: Fix Q-counters query in LAG mode
  RDMA/mlx5: Remove vport Q-counters dependency on normal Q-counters
  RDMA/mlx5: Fix Q-counters per vport allocation
  RDMA/mlx5: Create an indirect flow table for steering anchor
  RDMA/mlx5: Initiate dropless RQ for RAW Ethernet functions
  RDMA/rxe: Fix the use-before-initialization error of resp_pkts
  RDMA/bnxt_re: Fix reporting active_{speed,width} attributes
  RDMA/rxe: Fix ref count error in check_rkey()
  RDMA/rxe: Fix packet length checks
  RDMA/rtrs: Fix rxe_dealloc_pd warning
  RDMA/rtrs: Fix the last iu->buf leak in err path
2023-06-15 20:13:56 -07:00
Mark Bloch
617f5db1a6 RDMA/mlx5: Fix affinity assignment
The cited commit aimed to ensure that Virtual Functions (VFs) assign a
queue affinity to a Queue Pair (QP) to distribute traffic when
the LAG master creates a hardware LAG. If the affinity was set while
the hardware was not in LAG, the firmware would ignore the affinity value.

However, this commit unintentionally assigned an affinity to QPs on the LAG
master's VPORT even if the RDMA device was not marked as LAG-enabled.
In most cases, this was not an issue because when the hardware entered
hardware LAG configuration, the RDMA device of the LAG master would be
destroyed and a new one would be created, marked as LAG-enabled.

The problem arises when a user configures Equal-Cost Multipath (ECMP).
In ECMP mode, traffic can be directed to different physical ports based on
the queue affinity, which is intended for use by VPORTS other than the
E-Switch manager. ECMP mode is supported only if both E-Switch managers are
in switchdev mode and the appropriate route is configured via IP. In this
configuration, the RDMA device is not destroyed, and we retain the RDMA
device that is not marked as LAG-enabled.

To ensure correct behavior, Send Queues (SQs) opened by the E-Switch
manager through verbs should be assigned strict affinity. This means they
will only be able to communicate through the native physical port
associated with the E-Switch manager. This will prevent the firmware from
assigning affinity and will not allow the SQs to be remapped in case of
failover.

Fixes: 802dcc7fc5 ("RDMA/mlx5: Support TX port affinity for VF drivers in LAG mode")
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Link: https://lore.kernel.org/r/425b05f4da840bc684b0f7e8ebf61aeb5cef09b0.1685960567.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2023-06-11 11:27:17 +03:00