Commit Graph

7517 Commits

Author SHA1 Message Date
Dmitry Kozlyuk
64be0e779f ethdev: fix device capability to string translation
Add support for RTE_ETH_DEV_CAPA_FLOW_{RULE,SHARED_OBJECT}_KEEP
to rte_eth_dev_capability_name(), missed when adding the capabilities.

Fixes: 1d5a3d68c0 ("ethdev: add capability to keep flow rules on restart")
Fixes: 2c9cd45de7 ("ethdev: add capability to keep shared objects on restart")

Reported-by: Ali Alnubani <alialnu@nvidia.com>
Signed-off-by: Dmitry Kozlyuk <dkozlyuk@nvidia.com>
Acked-by: Xueming Li <xuemingl@nvidia.com>
Tested-by: Ali Alnubani <alialnu@nvidia.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2021-11-09 19:26:19 +01:00
Jim Harris
d4fb4eb087 power: remove unused poll counter
Following the previous fix, there is nothing using the ppi counter.

We can remove the related ppi_av array in struct priority_worker.
This allows us to also remove num_dequeue_pkts_prev and pc from
struct priority_worker since they are only used in conjunction
with the ppi_av array.

Suggested-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
2021-11-12 15:43:49 +01:00
Jim Harris
0353121c33 power: fix build with clang 13
clang-13 rightfully complains that the tot_ppi variable in update_stats
is set but not used, since the final accumulated tot_ppi results isn't
used anywhere.

Fixes: 450f079131 ("power: add traffic pattern aware power control")
Cc: stable@dpdk.org

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
2021-11-12 15:33:35 +01:00
Volodymyr Fialko
001d402c89 eal/arm64: support ASan
This patch defines ASAN_SHADOW_OFFSET for arm64 according to the ASan
documentation. This offset should cover all arm64 VMAs supported by
ASan.

Signed-off-by: Volodymyr Fialko <vfialko@marvell.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
Acked-by: Ruifeng Wang <ruifeng.wang@arm.com>
2021-11-12 15:30:00 +01:00
David Marchand
19d024003d build: factorize jansson availability check
Since two components wants to know if the jansson library is available,
move it to config/.

Signed-off-by: David Marchand <david.marchand@redhat.com>
2021-11-10 16:23:05 +01:00
David Marchand
d6024c0a67 build: cleanup libpcap dependent components
The RTE_PORT_PCAP variable is used to signal libpcap availability,
though its name seems to refer to pcap support in the port library.
Prefer a generic name and add explicit link dependencies where needed.

Fixes: 7a944656b3 ("test/pcapng: test pcapng library")
Fixes: 2eccf6afbe ("bpf: add function to convert classic BPF to DPDK BPF")
Fixes: cbb44143be ("app/dumpcap: add new packet capture application")

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
2021-11-10 11:42:34 +01:00
Huichao Cai
013bb504c8 ip_frag: revert fix fragmenting IPv4 fragment
The patch ("ip_frag: fix fragmenting IPv4 fragment") introduces
a bug and needs to be rolled back. This is because the patch
and variables "flag_offset" conflict with each other.

Bugzilla ID: 835
Fixes: 567473433b ("ip_frag: fix fragmenting IPv4 fragment")
Cc: stable@dpdk.org

Signed-off-by: Huichao Cai <chcchc88@163.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2021-11-08 23:32:38 +01:00
Konstantin Ananyev
060ef29dc0 ip_frag: hide internal structures
Move internal reassembly structures into new private
header 'ip_reassembly.h'.

Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2021-11-08 22:37:47 +01:00
Maciej Szwed
aeed570a21 interrupt: fix request notifier interrupt processing
We should call read() on RTE_INTR_HANDLE_VFIO_REQ event
to confirm that event.

Fixes: 0eb8a1c4c7 ("vfio: add request notifier interrupt")
Cc: stable@dpdk.org

Signed-off-by: Maciej Szwed <maciej.szwed@intel.com>
2021-11-08 18:26:07 +01:00
Harman Kalra
7e2083e462 eal/linux: check interrupt file descriptor validity
This patch fixes coverity issue by adding a check for negative event fd
value.

Coverity issue: 373711, 373694
Fixes: c2bd9367e1 ("lib: remove direct access to interrupt handle")

Signed-off-by: Harman Kalra <hkalra@marvell.com>
Acked-by: David Marchand <david.marchand@redhat.com>
2021-11-08 17:32:42 +01:00
Harman Kalra
3fcca9fac6 interrupts: check file descriptor validity
This patch fixes coverity issues by adding a check for negative event
fd value.

Coverity issue: 373716, 373699, 373693, 373688
Fixes: bbbac4cd6e ("interrupts: remove direct access to interrupt handle")

Signed-off-by: Harman Kalra <hkalra@marvell.com>
Acked-by: David Marchand <david.marchand@redhat.com>
2021-11-08 17:32:42 +01:00
Elena Agostini
c7ebd65c13 gpudev: add communication list
In heterogeneous computing system, processing is not only in the CPU.
Some tasks can be delegated to devices working in parallel.
When mixing network activity with task processing there may be the need
to put in communication the CPU with the device in order to synchronize
operations.

An example could be a receive-and-process application
where CPU is responsible for receiving packets in multiple mbufs
and the GPU is responsible for processing the content of those packets.

The purpose of this list is to provide a buffer in CPU memory visible
from the GPU that can be treated as a circular buffer
to let the CPU provide fondamental info of received packets to the GPU.

A possible use-case is described below.

CPU:
- Trigger some task on the GPU
- in a loop:
    - receive a number of packets
    - provide packets info to the GPU

GPU:
- Do some pre-processing
- Wait to receive a new set of packet to be processed

Layout of a communication list would be:

     -------
    |   0    | => pkt_list
    | status |
    | #pkts  |
     -------
    |   1    | => pkt_list
    | status |
    | #pkts  |
     -------
    |   2    | => pkt_list
    | status |
    | #pkts  |
     -------
    |  ....  | => pkt_list
     -------

Signed-off-by: Elena Agostini <eagostini@nvidia.com>
2021-11-08 17:20:53 +01:00
Elena Agostini
f56160a255 gpudev: add communication flag
In heterogeneous computing system, processing is not only in the CPU.
Some tasks can be delegated to devices working in parallel.
When mixing network activity with task processing there may be the need
to put in communication the CPU with the device in order to synchronize
operations.

The purpose of this flag is to allow the CPU and the GPU to
exchange ACKs. A possible use-case is described below.

CPU:
- Trigger some task on the GPU
- Prepare some data
- Signal to the GPU the data is ready updating the communication flag

GPU:
- Do some pre-processing
- Wait for more data from the CPU polling on the communication flag
- Consume the data prepared by the CPU

Signed-off-by: Elena Agostini <eagostini@nvidia.com>
2021-11-08 17:20:53 +01:00
Elena Agostini
2d61b429cf gpudev: add memory barrier
Add a function for the application to ensure the coherency
of the writes executed by another device into the GPU memory.

Signed-off-by: Elena Agostini <eagostini@nvidia.com>
2021-11-08 17:20:53 +01:00
Elena Agostini
e818c4e2bf gpudev: add memory API
In heterogeneous computing system, processing is not only in the CPU.
Some tasks can be delegated to devices working in parallel.
Such workload distribution can be achieved by sharing some memory.

As a first step, the features are focused on memory management.
A function allows to allocate memory inside the device,
or in the main (CPU) memory while making it visible for the device.
This memory may be used to save packets or for synchronization data.

The next step should focus on GPU processing task control.

Signed-off-by: Elena Agostini <eagostini@nvidia.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
2021-11-08 17:20:53 +01:00
Thomas Monjalon
a9af048aba gpudev: support multi-process
The device data shared between processes are moved in a struct
allocated in a shared memory (a new memzone for all GPUs).
The main struct rte_gpu references the shared memory
via the pointer mpshared.

The API function rte_gpu_attach() is added to attach a device
from the secondary process.
The function rte_gpu_allocate() can be used only by primary process.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
2021-11-08 17:20:53 +01:00
Thomas Monjalon
82e5f6b658 gpudev: add child device representing a device context
The computing device may operate in some isolated contexts.
Memory and processing are isolated in a silo represented by
a child device.
The context is provided as an opaque by the caller of
rte_gpu_add_child().

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
2021-11-08 17:20:52 +01:00
Thomas Monjalon
18cb075631 gpudev: add event notification
Callback functions may be registered for a device event.
Callback management is per-process and not thread-safe.

The events RTE_GPU_EVENT_NEW and RTE_GPU_EVENT_DEL
are notified respectively after creation and before removal
of a device, as part of the library functions.
Some future events may be emitted from drivers.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
2021-11-08 17:20:52 +01:00
Elena Agostini
8b8036a66e gpudev: introduce GPU device class library
In heterogeneous computing system, processing is not only in the CPU.
Some tasks can be delegated to devices working in parallel.

The new library gpudev is for dealing with GPGPU computing devices
from a DPDK application running on the CPU.

The infrastructure is prepared to welcome drivers in drivers/gpu/.

Signed-off-by: Elena Agostini <eagostini@nvidia.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
2021-11-08 17:20:52 +01:00
Anatoly Burakov
4fd15c6af0 vfio: set errno on unsupported OS
Currently, when code is running on FreeBSD or Windows, there is no way
to distinguish between a geniune error and a "VFIO is unsupported"
error. Fix the dummy implementations to also set the rte_errno flag.

Fixes: 279b581c89 ("vfio: expose functions")
Fixes: c564a2a200 ("vfio: expose clear group function for internal usages")
Fixes: 964b2f3bfb ("vfio: export some internal functions")
Fixes: ea2dc10668 ("vfio: add multi container support")
Cc: stable@dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: Chenbo Xia <chenbo.xia@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2021-11-08 16:45:28 +01:00
Anatoly Burakov
da6e4cdca1 vfio: fix FreeBSD documentation
On FreeBSD, `rte_vfio_is_enabled()` and `rte_vfio_noiommu_is_enabled()`
API calls will not return error, and will instead return 0. This is
intentional, because the caller of this API does not care whether VFIO
is supported at all, and will instead be interested in whether VFIO is
enabled or not. However, the doxygen comments for these functions state
that they will return an error on FreeBSD, which is incorrect.

Fix the doxygen comment to call out the fact that these
functions are only relevant on Linux, but remove the reference to
returning errors.

Fixes: 279b581c89 ("vfio: expose functions")
Cc: stable@dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: Chenbo Xia <chenbo.xia@intel.com>
2021-11-08 16:42:55 +01:00
Anatoly Burakov
bf8b792f3b vfio: fix FreeBSD clear group stub
On FreeBSD, `rte_vfio_clear_group()` was returning 0 even though this
function is not valid for FreeBSD, and is called out to return error in
doxygen comments.
Fix the return value to match documentation.

Fixes: c564a2a200 ("vfio: expose clear group function for internal usages")
Cc: stable@dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
2021-11-08 16:42:44 +01:00
Anatoly Burakov
84e03bde1c vfio: drop fallback Linux implementation
Currently, VFIO support for Linux is compiled unconditionally, and
supported kernel versions start with 4.4, so VFIO is assumed to always
be enabled. There is no way of disabling VFIO support at compile time
anyway, so just drop the "VFIO not available" fallback code altogether.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: Chenbo Xia <chenbo.xia@intel.com>
2021-11-08 16:27:15 +01:00
Chengwen Feng
b1f4933ef3 kni: check error code of allmulticast mode switch
Some drivers may return errcode when switch allmulticast mode,
so it's necessary to check the return code.

Fixes: b34801d1aa ("kni: support allmulticast mode set")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
2021-11-08 11:56:13 +01:00
Ali Alnubani
948be25cdb sched: fix debug build
Compare pkt_len to 0 instead of NULL to avoid the following build
failure with debug mode enabled:
../lib/sched/rte_pie.h: In function 'rte_pie_enqueue_empty':
../lib/sched/rte_pie.h:125:21: error: comparison between pointer
    and integer [-Werror]
  RTE_ASSERT(pkt_len != NULL);

Bugzilla ID: 878
Fixes: 44c730b0e3 ("sched: add PIE based congestion management")

Signed-off-by: Ali Alnubani <alialnu@nvidia.com>
2021-11-07 18:52:51 +01:00
Ferruh Yigit
b7ade5d31a ethdev: fix crash on owner delete
'eth_dev->data' can be null before ethdev allocated. The API walks
through all eth devices, at least for some data can be null.

Adding 'eth_dev->data' null check before accessing it.

Fixes: 33c73aae32 ("ethdev: allow ownership operations on unused port")
Cc: stable@dpdk.org

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Chenbo Xia <chenbo.xia@intel.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
2021-11-05 15:35:57 +01:00
Mattias Rönnblom
578402f2d5 eventdev: support device maintenance in adapters
Introduce support for event devices requiring calls to
rte_event_maintain() in the Ethernet RX, Timer and Crypto Eventdev
adapters.

Signed-off-by: Mattias Rönnblom <mattias.ronnblom@ericsson.com>
Tested-by: Richard Eklycke <richard.eklycke@ericsson.com>
2021-11-04 13:28:09 +01:00
Mattias Rönnblom
54f17843a8 eventdev: add port maintenance API
Extend Eventdev API to allow for event devices which require various
forms of internal processing to happen, even when events are not
enqueued to or dequeued from a port.

Signed-off-by: Mattias Rönnblom <mattias.ronnblom@ericsson.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
Tested-by: Richard Eklycke <richard.eklycke@ericsson.com>
Tested-by: Liron Himi <lironh@marvell.com>
2021-11-04 13:27:54 +01:00
Naga Harish K S V
9e58318531 eventdev/eth_rx: support telemetry
Added telemetry support for rxa_queue_stats and
rxa_queue_stats_reset to get and reset rx queue
stats respectively.

Signed-off-by: Naga Harish K S V <s.v.naga.harish.k@intel.com>
Acked-by: Jay Jayatheerthan <jay.jayatheerthan@intel.com>
2021-11-04 08:41:25 +01:00
Naga Harish K S V
995b150c1a eventdev/eth_rx: add queue stats API
This patch adds new api ``rte_event_eth_rx_adapter_queue_stats_get`` to
retrieve queue stats. The queue stats are in the format
``struct rte_event_eth_rx_adapter_queue_stats``.

For resetting the queue stats,
``rte_event_eth_rx_adapter_queue_stats_reset`` api is added.

The adapter stats_get and stats_reset apis are also updated to
handle queue level event buffer use case.

Signed-off-by: Naga Harish K S V <s.v.naga.harish.k@intel.com>
Acked-by: Jay Jayatheerthan <jay.jayatheerthan@intel.com>
2021-11-04 08:41:25 +01:00
Gowrishankar Muthukrishnan
259ca6d161 security: add telemetry endpoint for capabilities
Add telemetry endpoint for cryptodev security capabilities.
Details of endpoints added in documentation.

Signed-off-by: Gowrishankar Muthukrishnan <gmuthukrishn@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
2021-11-04 19:46:27 +01:00
Raja Zidane
9ad776442d crypto/mlx5: support 1MB data-unit
Add 1MB data-unit length to the capability's bitmap.
Handle 1MB data-unit length in the mlx5 session create operation,
and expose its capability in the mlx5 capabilities.

Signed-off-by: Raja Zidane <rzidane@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
2021-11-04 19:46:27 +01:00
Radu Nicolau
ff4a29d167 ipsec: support TSO
Add support for transmit segmentation offload to inline crypto processing
mode. This offload is not supported by other offload modes, as at a
minimum it requires inline crypto for IPsec to be supported on the
network interface.

Signed-off-by: Declan Doherty <declan.doherty@intel.com>
Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
Signed-off-by: Abhijit Sinha <abhijit.sinha@intel.com>
Signed-off-by: Daniel Martin Buckley <daniel.m.buckley@intel.com>
Acked-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
2021-11-04 19:46:27 +01:00
Nicolas Chautru
ba2469cddf bbdev: promote API as stable
This promotes the bbdev interface to stable.
Overdue for some time as bbdev interface has been stable.

Signed-off-by: Nicolas Chautru <nicolas.chautru@intel.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
2021-11-04 19:43:14 +01:00
Gowrishankar Muthukrishnan
1c559ee846 cryptodev: add telemetry endpoint for capabilities
Add telemetry endpoint for getting cryptodev capabilities.

Signed-off-by: Gowrishankar Muthukrishnan <gmuthukrishn@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
2021-11-04 19:43:14 +01:00
Rebecca Troy
d3d98f5ce9 cryptodev: support telemetry
The cryptodev library now registers commands with telemetry, and
implements the corresponding callback functions. These commands
allow a list of cryptodevs to be queried, as well as info and stats
for the corresponding cryptodev.

An example usage can be seen below:

Connecting to /var/run/dpdk/rte/dpdk_telemetry.v2
{"version": "DPDK 21.11.0-rc0", "pid": 1135019, "max_output_len": 16384}
--> /
{"/": ["/", "/cryptodev/info", "/cryptodev/list", "/cryptodev/stats", ...]}
--> /cryptodev/list
{"/cryptodev/list": [0,1,2,3]}
--> /cryptodev/info,0
{"/cryptodev/info": {"device_name": "0000:1c:01.0_qat_sym", \
	 "max_nb_queue_pairs": 2}}
--> /cryptodev/stats,0
{"/cryptodev/stats": {"enqueued_count": 0, "dequeued_count": 0, \
	"enqueue_err_count": 0, "dequeue_err_count": 0}}

Signed-off-by: Rebecca Troy <rebecca.troy@intel.com>
Acked-by: Ciara Power <ciara.power@intel.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
2021-11-04 19:43:14 +01:00
Gregory Etelson
de39080bd6 ethdev: fix variable length flow elements support
RTE flow API defines two flow elements types - common and PMD private.
Common RTE flow types are defined in rte_flow.h while PMD private
types exists inside specific PMD only. Application can create a flow
rule with PMD private items or actions. RTE flow API restricts
private PMD types to negative values.

Current implementation tried to use negative PMD private item type
value as index in the rte_flow_desc_item[] array.

The patch allows access to rte_flow_desc_item[] and
rte_flow_desc_action[] arrays to non-private PMD types only.

Fixes: 6cf7204733 ("ethdev: support flow elements with variable length")

Signed-off-by: Gregory Etelson <getelson@nvidia.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2021-11-04 13:23:29 +01:00
Thomas Monjalon
285725d93b ethdev: promote device removal check function as stable
The function rte_eth_dev_is_removed() was introduced in DPDK 18.02,
and is integrated in error checks of ethdev library.

It is promoted as stable ABI.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Ray Kinsella <mdr@ashroe.eu>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
2021-11-04 11:11:28 +01:00
Maxime Coquelin
ab4bb42406 vhost: rename driver callbacks struct
As previously announced, this patch renames struct
vhost_device_ops to struct rte_vhost_device_ops.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
2021-11-03 11:59:27 +01:00
Maxime Coquelin
94c16e89d7 vhost: mark vDPA driver API as internal
This patch marks the vDPA driver APIs as internal and
rename the corresponding header file to vdpa_driver.h.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
2021-11-03 09:11:34 +01:00
Dmitry Kozlyuk
2c9cd45de7 ethdev: add capability to keep shared objects on restart
rte_flow_action_handle_create() did not mention what happens
with an indirect action when a device is stopped and started again.
It is natural for some indirect actions, like counter, to be persistent.
Keeping others at least saves application time and complexity.
However, not all PMDs can support it, or the support may be limited
by particular action kinds, that is, combinations of action type
and the value of the transfer bit in its configuration.

Add a device capability to indicate if at least some indirect actions
are kept across the above sequence. Without this capability the behavior
is still unspecified, and application is required to destroy
the indirect actions before stopping the device.
In the future, indirect actions may not be the only type of objects
shared between flow rules. The capability bit intends to cover all
possible types of such objects, hence its name.

Declare that the application can test for the persistence
of a particular indirect action kind by attempting to create
an indirect action of that kind when the device is stopped
and checking for the specific error type.
This is logical because if the PMD can to create an indirect action
when the device is not started and use it after the start happens,
it is natural that it can move its internal flow shared object
to the same state when the device is stopped and restore the state
when the device is started.

Indirect action persistence across a reconfigurations is not required.
In case a PMD cannot keep the indirect actions across reconfiguration,
it is allowed just to report an error.
Application must then flush the indirect actions before attempting it.

Signed-off-by: Dmitry Kozlyuk <dkozlyuk@nvidia.com>
Acked-by: Ori Kam <orika@nvidia.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
2021-11-02 18:59:17 +01:00
Dmitry Kozlyuk
1d5a3d68c0 ethdev: add capability to keep flow rules on restart
Previously, it was not specified what happens to the flow rules
when the device is stopped, possibly reconfigured, then started.
If flow rules were kept, it could be convenient for application
developers, because they wouldn't need to save and restore them.
However, due to the number of flows and possible creation rate it is
impractical to save all flow rules in DPDK layer. This means that flow
rules persistence really depends on whether PMD and HW can implement it
efficiently. It can also be limited by the rule item and action types,
and its attributes transfer bit (a combination of an item/action type
and a value of the transfer bit is called a rule feature).

Add a device capability bit for PMDs that can keep at least some
of the flow rules across restart. Without this capability behavior
is still unspecified and it is declared that the application must
flush the rules before stopping the device.
Allow the application to test for persistence of rules using
a particular feature by attempting to create a flow rule
using that feature when the device is stopped
and checking for the specific error.
This is logical because if the PMD can to create the flow rule
when the device is not started and use it after the start happens,
it is natural that it can move its internal flow rule object
to the same state when the device is stopped and restore the state
when the device is started.

Rule persistence across a reconfigurations is not required,
because tracking all the rules and configuration-dependent resources
they use may be infeasible. In case a PMD cannot keep the rules
across reconfiguration, it is allowed just to report an error.
Application must then flush the rules before attempting it.

Signed-off-by: Dmitry Kozlyuk <dkozlyuk@nvidia.com>
Acked-by: Ori Kam <orika@nvidia.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
2021-11-02 18:59:17 +01:00
Maxime Coquelin
541053891a vhost: increase number of async IO vectors
This patch increases the number of IO vectors for the
asynchronous data path from 512 to 2048. It has been
reported during testing the starvation of IO vectors
during iperf benchmark with 64KB packet size.

As there are no direct relationship between
VHOST_MAX_ASYNC_VEC and BUF_VECTOR_MAX, this patch also
assign VHOST_MAX_ASYNC_VEC value directly instead of being
a multiple of BUF_VECTOR_MAX.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
2021-10-29 12:32:30 +02:00
Maxime Coquelin
816a565bf3 vhost: merge sync and async mbuf to descriptor filling
This patches merges copy_mbuf_to_desc() used by the sync
path with async_mbuf_to_desc() used by the async path.

Most of these complex functions are identical, so merging
them will make the maintenance easier.

In order not to degrade performance, the patch introduces
a boolean function parameter to specify whether it is called
in async context. This boolean is statically passed to this
always-inlined function, so the compiler will optimize this
out.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
2021-10-29 12:32:30 +02:00
Maxime Coquelin
b84e85e3b1 vhost: prepare sync for mbuf to descriptor refactoring
This patch extracts the descriptors buffers filling
from copy_mbuf_to_desc() into a dedicated function as a
preliminary step of merging copy_mubf_to_desc() and
async_mbuf_to_desc().

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
2021-10-29 12:32:30 +02:00
Maxime Coquelin
dbfa4c0bbd vhost: prepare async for mbuf to descriptor refactoring
This patch extracts the IO vectors filling from
async_mbuf_to_desc() into a dedicated function as a
preliminary step of merging copy_mubf_to_desc() and
async_mbuf_to_desc().

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
2021-10-29 12:32:30 +02:00
Maxime Coquelin
c75987487d vhost: simplify getting first in-flight index
This patch reworks the function getting the index
for the first packet in-flight.

When this index turns out to be zero, let's use the simple
path. Doing that avoid having to do a modulo with the
virtqueue size.

The patch also rename the function for better clarification,
and only pass the virtqueue metadata pointer, as all the
needed information are stored there.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
2021-10-29 12:32:30 +02:00
Maxime Coquelin
a3cfa8081f vhost: simplify async enqueue completion
vhost_poll_enqueue_completed() assumes some inflight
packets could have been completed in a previous call but
not returned to the application. But this is not the case,
since check_completed_copies callback is never called with
more than the current count as argument.

In other words, async->last_pkts_n is always 0. Removing it
greatly simplifies the function.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
2021-10-29 12:32:30 +02:00
Maxime Coquelin
2cbe826e26 vhost: remove notion of async descriptor
Now that IO vectors iterator have been simplified, the
rte_vhost_async_desc struct only contains a pointer on
the iterator array stored in the async metadata.

This patch removes it, and pass directly the iterators
array pointer to the transfer_data callback. Doing that,
we avoid declaring the descriptor array in the stack, and
also avoid the cost of filling it.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
2021-10-29 12:32:30 +02:00
Maxime Coquelin
d5d25cfd85 vhost: improve IO vector logic
IO vectors and their iterators arrays were part of the
async metadata but not their indexes.

In order to makes this more consistent, the patch adds the
indexes to the async metadata. Doing that, we can avoid
triggering DMA transfer within the loop as it IO vector
index overflow is now prevented in the async_mbuf_to_desc()
function.

Note that previous detection mechanism was broken
since the overflow already happened when detected, so OOB
memory access would already have happened.

With this changes done, virtio_dev_rx_async_submit_split()
and virtio_dev_rx_async_submit_packed() can be further
simplified.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
2021-10-29 12:32:30 +02:00