1151 Commits

Author SHA1 Message Date
David Hunt
e0207366b1 examples/power: add checks around hypervisor
Allow vm_power_manager to run without requiring qemu to be present
on the machine. This will be required for instances where the JSON
interface is used for commands and polices, without any VMs present.
A use case for this is a container enviromnent.

Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
2018-10-26 10:47:57 +02:00
Liang Ma
a137d012a0 examples/l3fwd-power: support traffic pattern aware control
Add the support for new traffic pattern aware power control
power management API.

Example:
./l3fwd-power -l xxx   -n 4   -w 0000:xx:00.0 -w 0000:xx:00.1 -- -p 0x3
-P --config="(0,0,xx),(1,0,xx)" --empty-poll="0,0,0" -l 14 -m 9 -h 1

Please Reference l3fwd-power document for full parameter usage

The option "l", "m", "h" are used to set the power index for
LOW, MED, HIGH power state. Only is useful after enable empty-poll

--empty-poll="training_flag, med_threshold, high_threshold"

The option training_flag is used to enable/disable training mode.

The option med_threshold is used to indicate the empty poll threshold
of modest state which is customized by user.

The option high_threshold is used to indicate the empty poll threshold
of busy state which is customized by user.

Above three option default value is all 0.

Once enable empty-poll. System will apply the default parameter if no
other command line options are provided.

If training mode is enabled, the user should ensure that no traffic
is allowed to pass through the system. When training phase complete,
the application transfer to normal operation

System will start running with the modest power mode.
If the traffic goes above 70%, then system will move to High power state.
If the traffic drops below 30%, the system will fallback to the modest
power state.

Example code use master thread to monitoring worker thread busyness.
The default timer resolution is 10ms.

Signed-off-by: Liang Ma <liang.j.ma@intel.com>
Reviewed-by: Lei Yao <lei.a.yao@intel.com>
Acked-by: David Hunt <david.hunt@intel.com>
2018-10-26 01:55:07 +02:00
Anatoly Burakov
5d7b673d5f mk: build with _GNU_SOURCE defined by default
We use _GNU_SOURCE all over the place, but often times we miss
defining it, resulting in broken builds on musl. Rather than
fixing every library's and driver's and application's makefile,
fix it by simply defining _GNU_SOURCE by default for all
builds.

Remove all usages of _GNU_SOURCE in source files and makefiles,
and also fixup a couple of instances of using __USE_GNU instead
of _GNU_SOURCE.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
2018-10-22 11:28:27 +02:00
Qi Zhang
05f1d6842f examples/multi_process: add hotplug sample
The sample code demonstrates device (ethdev only) management
at a multi-process environment. The user can attach/detach a
device on primary process and see it is synced on secondary
process automatically.

How to start?
./hotplug_mp --proc-type=auto

Command Line Example:

>help
>list

/* attach a pci device */
> attach 0000:81:00.0

/* detach the pci device */
> detach 0000:81:00.0

/* attach a vdev af_packet device */
> attach net_af_packet,iface=eth0

/* detach the vdev af_packet device */
> detach net_af_packet

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2018-10-17 10:16:18 +02:00
Cristian Dumitrescu
d5ed626f61 examples/ip_pipeline: support packet decap action
Add support for packet decap table action.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-10-12 19:33:36 +02:00
Cristian Dumitrescu
1bdf2632c9 examples/ip_pipeline: support packet tag action
Add support for the packet tag table action.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-10-12 19:33:29 +02:00
Reshma Pattan
223be676c3 examples/ip_pipeline: fix IPv6 endianness
Fix IPv6 endianness from big endian to CPU order.

Fixes: a3a95b7d58 ("examples/ip_pipeline: add table entry commands")
Cc: stable@dpdk.org

Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-10-12 19:33:20 +02:00
Fan Zhang
e1c0b44553 examples/ip_pipeline: add symmetric crypto example
Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-10-12 19:33:17 +02:00
Fan Zhang
1edccebccc examples/ip_pipeline: add CLI for symmetric crypto
This patch updates the cli parsing of ip_pipeline application
with extra symmetric crypto, port, session, and action support.

Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-10-12 19:33:16 +02:00
Fan Zhang
d46fe9448c examples/ip_pipeline: support symmetric crypto action
This patch adds symmetric crypto action support to ip_pipeline
application.

Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-10-12 19:33:15 +02:00
Fan Zhang
e1884698f6 examples/ip_pipeline: configure crypto port
This patch adds symmetric crypto port configuration to ip_pipeline
sample application.

Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-10-12 19:33:11 +02:00
Fan Zhang
bd9b67a109 examples/ip_pipeline: add cryptodev
This patch adds symmetric crypto device abstraction to ip_pipeline
sameple application.

Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-10-12 19:33:09 +02:00
Kevin Laatz
a5bd3a14ab examples/ip_pipeline: use table library headers
This commit modifies the IP Pipeline application to use the new header
files in librte_table.

As we are now using the new header files, we can remove the old ones from
the application directory.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Gavin Hu <gavin.hu@arm.com>
Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
2018-10-12 17:58:54 +02:00
Cristian Dumitrescu
44cad685ee examples/ip_pipeline: support VXLAN encap
Add CLI support for VXLAN encap.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-10-12 17:58:21 +02:00
Xiaolong Ye
edbed86d1c examples/vdpa: introduce a new sample for vDPA
The vdpa sample application creates vhost-user sockets by using the
vDPA backend. vDPA stands for vhost Data Path Acceleration which utilizes
virtio ring compatible devices to serve virtio driver directly to enable
datapath acceleration. As vDPA driver can help to set up vhost datapath,
this application doesn't need to launch dedicated worker threads for vhost
enqueue/dequeue operations.

Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
Acked-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2018-10-11 18:53:49 +02:00
Xiaoyun Li
2e67a7fbf3 net/i40e: config flow director automatically
I40e driver needed users to config exact fdir mode to create rte_flow
rules but it shouldn't. This patch allows users to create rte_flow rules
without configuring fdir mode and let the driver config fdir automatically.
And remove the workaround in flow filtering example.

Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>
2018-10-11 18:53:48 +02:00
Pavan Nikhilesh
085edac2ca examples/eventdev_pipeline: support Tx adapter
Redo the worker pipelines and offload transmission to service cores
seamlessly through Tx adapter.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@caviumnetworks.com>
Reviewed-by: Nikhil Rao <nikhil.rao@intel.com>
Tested-by: Nikhil Rao <nikhil.rao@intel.com>
2018-10-01 16:52:47 +02:00
Anoob Joseph
2e960c97c6 examples/ipsec-secgw: fix wrong session size
Crypto devices, which support lookaside protocol, exposes security
session size in addition to the crypto private symmetric session data
size. For applications using the security capabilities, both these
sizes need to be considered.

Fixes: ec17993a145a ("examples/ipsec-secgw: support security offload")
Cc: stable@dpdk.org

Signed-off-by: Anoob Joseph <anoob.joseph@caviumnetworks.com>
Signed-off-by: Archana Muniganti <muniganti.archana@caviumnetworks.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
2018-09-25 17:57:25 +02:00
Anoob Joseph
f48cc7af02 examples/ipsec-secgw: increase number of dev mappings
Increasing the number of cdev mappings to accommodate usage of crypto
devices with larger number of capabilities, with higher number of cores.

Required mappings : ([no of ciphers] * [no of auth] + [aead algos]) *
                    [no of cores]

Signed-off-by: Ankur Dwivedi <ankur.dwivedi@caviumnetworks.com>
Signed-off-by: Anoob Joseph <anoob.joseph@caviumnetworks.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
2018-09-25 16:17:39 +02:00
Hemant Agrawal
1bc489ca09 examples/ipsec-secgw: support 3DES-CBC
Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
2018-08-30 05:10:50 +02:00
Ferruh Yigit
323e7b667f ethdev: make default behavior CRC strip on Rx
Removed DEV_RX_OFFLOAD_CRC_STRIP offload flag.
Without any specific Rx offload flag, default behavior by PMDs is to
strip CRC.

PMDs that support keeping CRC should advertise DEV_RX_OFFLOAD_KEEP_CRC
Rx offload capability.

Applications that require keeping CRC should check PMD capability first
and if it is supported can enable this feature by setting
DEV_RX_OFFLOAD_KEEP_CRC in Rx offload flag in rte_eth_dev_configure()

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Tomasz Duszynski <tdu@semihalf.com>
Acked-by: Shahaf Shuler <shahafs@mellanox.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Jan Remes <remes@netcope.com>
Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-09-14 20:08:41 +02:00
Fan Zhang
709521f4c2 examples/vhost_crypto: support multi-core
Originally vhost_crypto sample application only supports single
core. This patch adds the multi-core support with more flexible
options.

Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2018-09-14 20:08:41 +02:00
Rami Rosen
b24ec9bc1c examples/vhost: remove unnecessary constant
This patch removes an unnecessary definition of MAX_PRINT_BUFF
in examples/vhost/main.c, since it is no longer being used.

Fixes: 68363d85857d ("examples/vhost: remove the non-working zero copy code")
Cc: stable@dpdk.org

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Reviewed-by: Tiwei Bie <tiwei.bie@intel.com>
2018-09-12 19:10:09 +02:00
Pablo de Lara
8517e13916 examples/performance-thread: convert to SPDX tags
Convert dual license headers with Intel and Dmitry Vyukov
names to SPDX.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Dmitry Vyukov <dvyukov@gmail.com>
2018-08-09 22:32:04 +02:00
Cristian Dumitrescu
2e1141b6f1 examples/ip_pipeline: fix RSS
After adding RSS hash offload checks, flags that are not supported by
the current device result in RSS configuration failing as opposed to
unsupported flags being silently discarded. This fix is making sure
that only device supported flags are passed to RSS configuration.

Fixes: aa1a6d87f15d ("ethdev: force RSS offload rules again")

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Acked-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Tested-by: Yuan Peng <yuan.peng@intel.com>
2018-08-07 23:19:02 +02:00
Kevin Traynor
3a787d5bf1 meter: remove experimental tag from profile API
As per guideline that new APIs must be experimental
for at least one release, it is now possible to remove
the experimental tag from:

rte_meter_srtcm_profile_config()
rte_meter_trtcm_profile_config()

Signed-off-by: Kevin Traynor <ktraynor@redhat.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-08-06 01:15:11 +02:00
Rosen Xu
9a93446a0e examples/flow_filtering: add flow director config for i40e
Rte_fdir_conf of rte_eth_conf should be initialized before
port initialization. It is a workaround solution when working
with Intel I40e.

Fixes: 4a3ef59a10c8 ("examples/flow_filtering: add simple demo of flow API")
Cc: stable@dpdk.org

Signed-off-by: Rosen Xu <rosen.xu@intel.com>
Acked-by: Ori Kam <orika@mellanox.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2018-08-05 22:16:45 +02:00
Gage Eads
3504db92b5 examples/multi_process: remove l2fwd fork example
l2fwd_fork relies on a multiprocess model that DPDK does not support
(calling rte_eal_init() before fork()), in particular in light of recent
EAL changes like the multiproess communication channel.

This example can mislead users into thinking this is a supported
multiprocess model; hence, this commit removes this example and the
corresponding user guide documentation as well.

This patch was made following this mailing list discussion:
http://mails.dpdk.org/archives/dev/2018-July/108106.html

Signed-off-by: Gage Eads <gage.eads@intel.com>
2018-08-05 21:42:40 +02:00
Rami Rosen
8dedd73745 examples/l3fwd: remove useless include
This patch removes unneeded include of rte_mempool.h in
two modules in examples/l3fwd.

Fixes: 268888b5b020 ("examples/l3fwd: modularize")
Cc: stable@dpdk.org

Signed-off-by: Rami Rosen <rami.rosen@intel.com>
2018-07-26 20:03:12 +02:00
Bruce Richardson
4341adf272 examples/exception_path: fix out-of-bounds read
When printing out stats from the exception_path app, all possible
lcore_ids are iterated. However, the app only supports up to 64 cores.
To prevent possible errors, and to remove coverity warnings,
explicitly check for out-of-range lcore ids before printing.

Coverity issue: 268335
Fixes: af75078fece3 ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
2018-07-26 19:53:56 +02:00
Cristian Dumitrescu
9077d5a44e examples/ip_pipeline: add example script for RSS
Add example script to demonstrate Receive Side Scaling (RSS).

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-07-26 15:53:53 +02:00
Kevin Laatz
26b3effea2 examples/ip_pipeline: add help command
Add a help to the existing application cli. This will enable users to
display the usage help with descriptions within the cli.

Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2018-07-25 19:26:42 +02:00
Bruce Richardson
3e3eeb4d5f build: remove duplicate checks for cflags
There is no need to check for each library, driver and example whether
certain cflags are supported. Instead of checking inside the loop, do
so outside and reuse the value.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
2018-07-26 10:09:20 +02:00
Konstantin Ananyev
c1fe6dbfce examples/ipsec-secgw: fix bypass rule processing
For outbound ports BYPASS rule is erroneously treated as PROTECT one
with SA idx zero.

Fixes: 2a5106af132b ("examples/ipsec-secgw: fix corner case for SPI value")
Cc: stable@dpdk.org

Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
2018-07-25 08:36:19 +02:00
Pablo de Lara
0b920a5f3d examples/l2fwd-crypto: remove duplicated capability check
Now that device capabilities are checked separately,
before setting the xform parameters, it is not required
to do the check again, leaving only the xform setting
with the device configuration.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
2018-07-24 01:48:10 +02:00
Pablo de Lara
6ae3fb9df6 examples/l2fwd-crypto: fix session mempool size
The session mempool size for this application depends
on the number of crypto devices that are capable
of performing the operation given by the parameters on the app.

However, previously this calculation was done before all devices
were checked, resulting in an incorrect number of sessions
required.

Now the calculation of the devices to be used is done first
(checking the capabilities of the enabled devices),
followed by the creation of the session pool, resulting
in a correct number of objects needed for the sessions
to be created.

Fixes: e3bcb99a5e13 ("examples/l2fwd-crypto: limit number of sessions")

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
2018-07-24 01:48:10 +02:00
Pablo de Lara
a6fde4f194 examples/l2fwd-crypto: separate IV check from xform setting
IV_param_check() function was checking if the IV size provided
was supported by device and setting the IV size in the xform
structure.

Instead of this, the function should only do the parameter check
and outside the IV size on the xform is set.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
2018-07-24 01:48:10 +02:00
Pablo de Lara
a8fd8881dd examples/l2fwd-crypto: skip device not supporting operation
When a crypto device does not support an algorithm, it is skipped
and not used. However, when it does support it, but not the rest
of the parameters (IV, key, AAD sizes...), application stops.
Instead, the device should be skipped and the search of a suitable
device should continue.

Fixes: a061e50a0d97 ("examples/l2fwd-crypto: fix ambiguous input key size")
Cc: stable@dpdk.org

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
2018-07-24 01:48:10 +02:00
Pablo de Lara
53b9a5b66d examples/l2fwd-crypto: check return value on IV size check
IV size parameter is checked through a function,
but its return value was not checked.

Fixes: 0fbd75a99fc9 ("cryptodev: move IV parameters to session")
Fixes: acf8616901b5 ("cryptodev: add auth IV")
Fixes: 2661f4fbe93d ("examples/l2fwd-crypto: add AEAD parameters")
Cc: stable@dpdk.org

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
2018-07-24 01:48:10 +02:00
Pablo de Lara
6df38301de examples/l2fwd-crypto: fix digest with AEAD algo
When performing authentication verification (both for AEAD algorithms,
such as AES-GCM, or for authentication algorithms, such as SHA1-HMAC),
the digest address is calculated based on the packet size and the
algorithm used (substracting digest size and IP header to the packet size).

However, for AEAD algorithms, this was not calculated correctly,
since the digest size was not being substracted.

Bugzilla ID: 44
Fixes: 2661f4fbe93d ("examples/l2fwd-crypto: add AEAD parameters")
Cc: stable@dpdk.org

Reported-by: Ankur Dwivedi <ankur.dwivedi@cavium.com>
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Tested-by: Ankur Dwivedi <ankur.dwivedi@cavium.com>
2018-07-24 01:48:10 +02:00
Konstantin Ananyev
b45be46dfd examples/ipsec-secgw: fix IPv4 checksum at Tx
For ESP transport and BYPASS mode the app might generate output
packets with invalid IPv4 header checksum.
At least such behavior was observed on few Intel NICs.
The reason is that the app didn't set ipv4 header checksum to zero
before passing it to the HW.

Fixes: 906257e965b7 ("examples/ipsec-secgw: support IPv6")
Cc: stable@dpdk.org

Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>
2018-07-24 01:48:10 +02:00
David Hunt
711f43ba56 examples/vm_power: make branch ratio configurable
For different workloads and poll loops, the theshold
may be different for when you want to scale up and down.

This patch allows changing of the default branch ratio
by using the -b command line argument (or --branch-ratio=)

Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>
2018-07-21 00:00:43 +02:00
David Hunt
59287933a0 examples/vm_power: add options to guest app
Add new command line arguments to the guest app to make
    testing and validation of the policy usage easier.
    These arguments are mainly around setting up the power
    management policy that is sent from the guest vm to
    to the vm_power_manager in the host

    New command line parameters:
    -n or --vm-name
       sets the name of the vm to be used by the host OS.
    -b or --busy-hours
       sets the list of hours that are predicted to be busy
    -q or --quiet-hours
       sets the list of hours that are predicted to be quiet
    -l or --vcpu-list
       sets the list of vcpus to monitor
    -p or --port-list
       sets the list of posts to monitor when using a
       workload policy.
    -o or --policy
       sets the default policy type
          TIME
          WORKLOAD
          TRAFFIC
          BRANCH_RATIO

    The format of the hours or list paramers is a comma-separated
    list of integers, which can take the form of
       a. x    e.g. --vcpu-list=1
       b. x,y  e.g. --quiet-hours=3,4
       c. x-y  e.g. --busy-hours=9-12
       d. combination of above (e.g. --busy-hours=4,5-7,9)

Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>
2018-07-21 00:00:43 +02:00
David Hunt
b89168ef15 examples/vm_power: add branch ratio policy type
Add the capability for the vm_power_manager to receive
a policy of type BRANCH_RATIO. This will add any vcpus
in the policy to the oob monitoring thread.

Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>
2018-07-20 23:59:42 +02:00
David Hunt
6e26957782 examples/vm_power: add --port-list option
add in the long form of -p, which is --port-list

Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>
2018-07-20 23:59:42 +02:00
David Hunt
d42b1300ad examples/vm_power: add thread for oob core monitor
Change the app to now require three cores, as the third core
will be used to run the oob montoring thread.

Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>
2018-07-20 22:53:17 +02:00
David Hunt
6453b9284b examples/vm_power: allow greater than 64 cores
To facilitate more info per core, change the global_cpu_mask
from a uint64_t to an array. This also removes the limit on
64 cores, allocing the aray at run-time based on the number of
cores found in the system.

Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>
2018-07-20 22:53:17 +02:00
David Hunt
4b1a631b8a examples/vm_power: add oob monitoring functions
This patch introduces the out-of-band (oob) core monitoring
functions.

The functions are similar to the channel manager functions.
There are function to add and remove cores from the
list of cores being monitored. There is a function to initialise
the monitor setup, run the monitor thread, and exit the monitor.

The monitor thread runs in it's own lcore, and is separate
functionality to the channel monitor which is epoll based.
THis thread is timer based. It loops through all monitored cores,
calculates the branch ratio, scales up or down the core, then
sleeps for an interval (~250 uS).

The method it uses to read the branch counters is a pread on the
/dev/cpu/x/msr file, so the 'msr' kernel module needs to be loaded.
Also, since the msr.h file has been made unavailable in recent
kernels, we have #defines for the relevant MSRs included in the
code.

The makefile has a switch for x86 and non-x86 platforms,
and compiles stub function for non-x86 platforms.

Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>
2018-07-20 22:53:17 +02:00
David Hunt
99a968fac0 examples/vm_power: add core list parameter
Add in the '-l' command line parameter (also --core-list)
So the user can now pass --corelist=4,6,8-10 and it will
expand out to 4,6,8,9,10 using the parse function provided
in parse.c (parse_set).

This list of cores is then used to enable out-of-band monitoring
to scale up and down these cores based on the ratio of branch
hits versus branch misses. The ratio will be low when a poll
loop is spinning with no packets being received, so the frequency
will be scaled down.

Also , as part of this change, we introduce a core_info struct
which keeps information on each core in the system, and whether
we're doing out of band monitoring on them.

Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>
2018-07-20 22:53:17 +02:00
David Hunt
ace158c4a8 examples/vm_power: add check for port count
If we don't pass any ports to the app, we don't need to create
any mempools, and we don't need to init any ports.

Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>
2018-07-20 22:53:17 +02:00