Currently there isn't a clear layer separation between the counters and
the steering code, whereas the steering code is doing redundant access
to the counter struct.
Separate the fs.c and counters.c, where fs code won't access or be
aware of counter structs but only the objects it needs.
As a result, move mlx5_rdma_counter struct from the header file to be
an internal struct for the counters file only.
Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Edward Srouji <edwards@nvidia.com>
Link: https://patch.msgid.link/9854d1fdb140e4a6552b7a2fd1a028cfe488a935.1753004208.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Currently, the capability check is done in the default
init_user_ns user namespace. When a process runs in a
non default user namespace, such check fails. Due to this
when a process is running using Podman, it fails to create
the anchor.
Since the RDMA device is a resource within a network namespace,
use the network namespace associated with the RDMA device to
determine its owning user namespace.
Fixes: 0c6ab0ca9a ("RDMA/mlx5: Expose steering anchor to userspace")
Signed-off-by: Parav Pandit <parav@nvidia.com>
Link: https://patch.msgid.link/c2376ca75e7658e2cbd1f619cf28fbe98c906419.1750963874.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Currently, the capability check is done in the default
init_user_ns user namespace. When a process runs in a
non default user namespace, such check fails. Due to this
when a process is running using Podman, it fails to create
the flow.
Since the RDMA device is a resource within a network namespace,
use the network namespace associated with the RDMA device to
determine its owning user namespace.
Fixes: 3226944124 ("IB/mlx5: Introduce driver create and destroy flow methods")
Signed-off-by: Parav Pandit <parav@nvidia.com>
Link: https://patch.msgid.link/a4dcd5e3ac6904ef50b19e56942ca6ab0728794c.1750963874.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Merge tag 'v6.15' into rdma.git for-next
Following patches need the RDMA rc branch since we are past the RC cycle
now.
Merge conflicts resolved based on Linux-next:
- For RXE odp changes keep for-next version and fixup new places that
need to call is_odp_mr()
https://lore.kernel.org/r/20250422143019.500201bd@canb.auug.org.auhttps://lore.kernel.org/r/20250514122455.3593b083@canb.auug.org.au
- irdma is keeping the while/kfree bugfix from -rc and the pf/cdev_info
change from for-next
https://lore.kernel.org/r/20250513130630.280ee6c5@canb.auug.org.au
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The following warning is reported by sparse tool:
drivers/infiniband/hw/mlx5/fs.c:1664:26: warning: array of flexible
structures
Avoid it by simply splitting array into two separate structs.
Link: https://patch.msgid.link/7b891b96a9fc053d01284c184d25ae98d35db2d4.1747827041.git.leon@kernel.org
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
The cited commit made fs.c always compile, even when
INFINIBAND_USER_ACCESS isn't set. This results in a compilation
warning about an unused object when compiling with W=1 and
USER_ACCESS is unset.
Fix this by defining uverbs_destroy_def_handler() even when
USER_ACCESS isn't set.
Fixes: 36e0d43367 ("RDMA/mlx5: Compile fs.c regardless of INFINIBAND_USER_ACCESS config")
Link: https://patch.msgid.link/r/20250402070944.1022093-1-mbloch@nvidia.com
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Add support to allow optional-counters binding to a QP, whereas when
a bind operation is requested depending on the counter optional-counter
binding state the driver will determine if to also add optional-counters
to this QP binding.
The optional-counter binding is done by simply adding a steering
rule for the specific optional-counter condition with the additional
match over that QP number.
Note that optional-counters per QP rules are handled on an earlier prio
than per device counters, and per device counter correctness is maintained
by core whereas it is responsible to sum active counters when checking device
counter and to add them to history count when they are deallocated.
Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Link: https://patch.msgid.link/2cad1b891a6641ae61fe8d92f867e1059121813a.1741875070.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Add the following optional counters:
rdma_tx_packets,rdma_rx_bytes,rdma_rx_packets,rdma_tx_bytes.
Which counts all RDMA packets/bytes sent and received per link.
Note that since each direction packet and byte counter are shared,
the counter is only reset when both counters of that direction
are removed. But from user-perspective each can be enabled/disabled separately.
The counters can be enabled using:
sudo rdma stat set link rocep8s0f0/1 optional-counters rdma_tx_packets
And can be seen using:
rdma stat -j show link rocep8s0f0/1
Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Link: https://patch.msgid.link/9f2753ad636f21704416df64b47395c8991d1123.1741875070.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This patch adds RDMA_TRANSPORT_RX and RDMA_TRANSPORT_TX as a new flow
table type for matcher creation.
Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://patch.msgid.link/2287d8c50483e880450c7e8e08d9de34cdec1b14.1741261611.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Currently mlx5_flow_destination includes counter_id which is assigned in
case we use flow counter on the flow steering rule. However, counter_id
is not enough data in case of using HW Steering. Thus, have mlx5_fc
object as part of mlx5_flow_destination instead of counter_id and assign
it where needed.
In case counter_id is received from user space, create a local counter
object to represent it.
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20241219175841.1094544-4-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The mutex was not unlocked on some of the error flows.
Moved the unlock location to include all the error flow scenarios.
Fixes: e1f4a52ac1 ("RDMA/mlx5: Create an indirect flow table for steering anchor")
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Hamdan Igbaria <hamdani@nvidia.com>
Link: https://lore.kernel.org/r/1244a69d783da997c0af0b827c622eb00495492e.1695203958.git.leonro@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
A misbehaved user can create a steering anchor that points to a kernel
flow table and then destroy the anchor without freeing the associated
STC. This creates a problem as the kernel can't destroy the flow
table since there is still a reference to it. As a result, this can
exhaust all available flow table resources, preventing other users from
using the RDMA device.
To prevent this problem, a solution is implemented where a special flow
table with two steering rules is created when a user creates a steering
anchor for the first time. The rules include one that drops all traffic
and another that points to the kernel flow table. If the steering anchor
is destroyed, only the rule pointing to the kernel's flow table is removed.
Any traffic reaching the special flow table after that is dropped.
Since the special flow table is not destroyed when the steering anchor is
destroyed, any issues are prevented from occurring. The remaining resources
are only destroyed when the RDMA device is destroyed, which happens after
all DEVX objects are freed, including the STCs, thus mitigating the issue.
Fixes: 0c6ab0ca9a ("RDMA/mlx5: Expose steering anchor to userspace")
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Link: https://lore.kernel.org/r/b4a88a871d651fa4e8f98d552553c1cfe9ba2cd6.1685960567.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Add missing check for return value when calling to
mlx5_ib_ft_type_to_namespace, even though it can't really fail in this
specific call.
Fixes: 52438be441 ("RDMA/mlx5: Allow inserting a steering rule to the FDB")
Link: https://lore.kernel.org/r/7b9ceda217d9368a51dc47a46b769bad4af9ac92.1659256069.git.leonro@nvidia.com
Reviewed-by: Itay Aveksis <itayav@nvidia.com>
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Expose a steering anchor per priority to allow users to re-inject
packets back into default NIC pipeline for additional processing.
MLX5_IB_METHOD_STEERING_ANCHOR_CREATE returns a flow table ID which
a user can use to re-inject packets at a specific priority.
A FTE (flow table entry) can be created and the flow table ID
used as a destination.
When a packet is taken into a RDMA-controlled steering domain (like
software steering) there may be a need to insert the packet back into
the default NIC pipeline. This exposes a flow table ID to the user that can
be used as a destination in a flow table entry.
With this new method priorities that are exposed to users via
MLX5_IB_METHOD_FLOW_MATCHER_CREATE can be reached from a non-zero UID.
As user-created flow tables (via RDMA DEVX) are created with a non-zero UID
thus it's impossible to point to a NIC core flow table (core driver flow tables
are created with UID value of zero) from userspace.
Create flow tables that are exposed to users with the shared UID, this
allows users to point to default NIC flow tables.
Steering loops are prevented at FW level as FW enforces that no flow
table at level X can point to a table at level lower than X.
Link: https://lore.kernel.org/all/20220703205407.110890-6-saeed@kernel.org/
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
_get_flow_table() requires the entire matcher being passed
while all it needs is the priority and namespace type.
Pass the priority and namespace type directly instead.
Link: https://lore.kernel.org/all/20220703205407.110890-5-saeed@kernel.org/
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
The commit mentioned in Fixes line removed the function that was
called to check validity of esp_aes_gcm attribute. Sadly, that
is_valid_esp_aes_gcm() returned success even for specs without
esp_aes_gcm at all.
So the right fix will be to remove whole if () and such fix
the following error observed in smatch too.
drivers/infiniband/hw/mlx5/fs.c:1126 _create_flow_rule()
warn: duplicate check 'is_egress' (previous on line 1098)
Fixes: de8bdb4769 ("RDMA/mlx5: Drop crypto flow steering API")
Link: https://lore.kernel.org/r/11b31c1f85bc8c8add385529aa3f307c3b383a11.1649842371.git.leonro@nvidia.com
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The mlx5 flow steering crypto API was intended to be used in FPGA
devices, which is not supported for years already. The removal of
mlx5 crypto FPGA code together with inability to configure encryption
keys makes the low steering API completely unusable.
So delete the code, so any ESP flow steering requests will fail with
not supported error, as it is happening now anyway as no device support
this type of API.
Link: https://lore.kernel.org/r/634a5face7734381463d809bfb89850f6998deac.1649232994.git.leonro@nvidia.com
Reviewed-by: Raed Salem <raeds@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Currently, the driver ignores the user's priority for flow steering
rules in FDB namespace. Change it and create the rule in the right
priority.
It will allow to create FDB steering rules in up to 16 different
priorities.
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Acked-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This patch doesn't add an additional namespaces, but just separates the
naming to be used by each FDB user, bypass and kernel.
Downstream patches will actually split this up and allow to have more
than single priority for the bypass users.
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Acked-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Adding steering infrastructure for adding and removing optional counter.
This allows to add and remove the counters dynamically in order not to
hurt performance.
Link: https://lore.kernel.org/r/20211008122439.166063-12-markzhang@nvidia.com
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@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>
Trivial conflicts in net/can/isotp.c and
tools/testing/selftests/net/mptcp/mptcp_connect.sh
scaled_ppm_to_ppb() was moved from drivers/ptp/ptp_clock.c
to include/linux/ptp_clock_kernel.h in -next so re-apply
the fix there.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Validate port value provided by the user and with that remove no longer
needed validation by the driver. The missing check in the mlx5_ib driver
could cause to the below oops.
Call trace:
_create_flow_rule+0x2d4/0xf28 [mlx5_ib]
mlx5_ib_create_flow+0x2d0/0x5b0 [mlx5_ib]
ib_uverbs_ex_create_flow+0x4cc/0x624 [ib_uverbs]
ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0xd4/0x150 [ib_uverbs]
ib_uverbs_cmd_verbs.isra.7+0xb28/0xc50 [ib_uverbs]
ib_uverbs_ioctl+0x158/0x1d0 [ib_uverbs]
do_vfs_ioctl+0xd0/0xaf0
ksys_ioctl+0x84/0xb4
__arm64_sys_ioctl+0x28/0xc4
el0_svc_common.constprop.3+0xa4/0x254
el0_svc_handler+0x84/0xa0
el0_svc+0x10/0x26c
Code: b9401260 f9615681 51000400 8b001c20 (f9403c1a)
Fixes: 436f2ad05a ("IB/core: Export ib_create/destroy_flow through uverbs")
Link: https://lore.kernel.org/r/faad30dc5219a01727f47db3dc2f029d07c82c00.1623309971.git.leonro@nvidia.com
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Adding new reformat context type (INSERT_HEADER) requires adding two new
parameters to reformat context - reformat_param_0 and reformat_param_1.
As defined by HW spec, these parameters have different meaning for
different reformat context type.
The first parameter (reformat_param_0) is not new to HW spec, but it
wasn't used by any of the supported reformats. The second parameter
(reformat_param_1) is new to the HW spec - it was added to allow
supporting INSERT_HEADER.
For NSERT_HEADER, reformat_param_0 indicates the header used to
reference the location of the inserted header, and reformat_param_1
indicates the offset of the inserted header from the reference point
defined by reformat_param_0.
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Allow creating FDB steering rules only when in switchdev mode.
The only software model where a userspace application can manipulate
FDB entries is when it manages the eswitch. This is only possible in
switchdev mode where we expose a single RDMA device with representors
for all the vports that are connected to the eswitch.
Fixes: 52438be441 ("RDMA/mlx5: Allow inserting a steering rule to the FDB")
Link: https://lore.kernel.org/r/e928ae7c58d07f104716a2a8d730963d1bd01204.1623052923.git.leonro@nvidia.com
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Saeed Mahameed says:
====================
This pr contains changes from mlx5-next branch,
already reviewed on netdev and rdma mailing lists, links below.
1) From Leon, Dynamically assign MSI-X vectors count
Already Acked by Bjorn Helgaas.
https://patchwork.kernel.org/project/netdevbpf/cover/20210314124256.70253-1-leon@kernel.org/
2) Cleanup series:
https://patchwork.kernel.org/project/netdevbpf/cover/20210311070915.321814-1-saeed@kernel.org/
From Mark, E-Switch cleanups and refactoring, and the addition
of single FDB mode needed HW bits.
From Mikhael, Remove unused struct field
From Saeed, Cleanup W=1 prototype warning
From Zheng, Esw related cleanup
From Tariq, User order-0 page allocation for EQs
====================
* mlx5-next:
net/mlx5: Implement sriov_get_vf_total_msix/count() callbacks
net/mlx5: Dynamically assign MSI-X vectors count
net/mlx5: Add dynamic MSI-X capabilities bits
PCI/IOV: Add sysfs MSI-X vector assignment interface
net/mlx5: Use order-0 allocations for EQs
net/mlx5: Add IFC bits needed for single FDB mode
net/mlx5: E-Switch, Refactor send to vport to be more generic
RDMA/mlx5: Use representor E-Switch when getting netdev and metadata
net/mlx5: E-Switch, Add eswitch pointer to each representor
net/mlx5: E-Switch, Add match on vhca id to default send rules
net/mlx5: Remove unused mlx5_core_health member recover_work
net/mlx5: simplify the return expression of mlx5_esw_offloads_pair()
net/mlx5: Cleanup prototype warning
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Initial drop action support missed that drop action can be added to egress
flow tables as well. Add the missing support.
This requires making sure that dest_type isn't set to PORT which in turn
exposes a possibility of passing dst while indicating number of dsts as
zero. Explicitly check for number of dsts and pass the appropriate
pointer.
Fixes: f29de9eee7 ("RDMA/mlx5: Add support for drop action in DV steering")
Link: https://lore.kernel.org/r/20210318135123.680759-1-leon@kernel.org
Reviewed-by: Mark Bloch <markb@nvidia.com>
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Now that a pointer to the managing E-Switch is stored in the representor
use it.
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Acked-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Remove the ib_is_destroyable_retryable() concept.
The idea here was to allow the drivers to forcibly clean the HW object
even if they otherwise didn't want to (eg because of usecnt). This was an
attempt to clean up in a world where drivers were not allowed to fail HW
object destruction.
Now that we are going back to allowing HW objects to fail destroy this
doesn't make sense. Instead if a uobject's HW object can't be destroyed it
is left on the uobject list and it is up to uverbs_destroy_ufile_hw() to
clean it. Multiple passes over the uobject list allow hidden dependencies
to be resolved. If that fails the HW driver is broken, throw a WARN_ON and
leak the HW object memory.
All the other tricky failure paths (eg on creation error unwind) have
already been updated to this new model.
Link: https://lore.kernel.org/r/20201104144556.3809085-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
In order to allow sniffer when the RDMA device is in switchdev mode, we
don't need to set the source port when creating the sniffer rule.
Link: https://lore.kernel.org/r/20200803060214.15328-1-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The "domain" argument is constant and modern device (mlx5) doesn't support
anything except IB_FLOW_DOMAIN_USER, so delete this extra parameter and
simplify code.
Link: https://lore.kernel.org/r/20200730081235.1581127-4-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Improve readability of fs.c by converting multiple else-if constructions
to be implemented with switch keyword.
Link: https://lore.kernel.org/r/20200730081235.1581127-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
For RDMA TX flow table, set destination type to be 'port' and prevent
creation of flows with TIR destination.
As RDMA TX is an egress flow table the rules on this flow table should
not forward traffic back to the NIC and should set the destination to be
the port.
Without the setting of this destination type flow rules on the RDMA TX
flow tables are not created as FW invokes a syndrome for undefined
destination for the rule.
Fixes: 24670b1a31 ("net/mlx5: Add support for RDMA TX steering")
Link: https://lore.kernel.org/r/20200803055849.14947-1-leon@kernel.org
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
When using action drop dest_type was never assigned to any value. Add
initialization of dest_type to -1 since 0 is valid.
Fixes: f29de9eee7 ("RDMA/mlx5: Add support for drop action in DV steering")
Link: https://lore.kernel.org/r/20200707110259.882276-1-leon@kernel.org
Signed-off-by: Daria Velikovsky <daria@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Move flow steering logic to be in separate file and rename flow.c to be
fs.c because it is better describe the content.
Link: https://lore.kernel.org/r/20200702081809.423482-5-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
