The vhost_scsi example application negotiates the
VIRTIO_RING_F_EVENT_IDX feature bit but does not honor it when accessing
vrings.
In particular, commit e37ff95440 ("vhost:
support virtqueue interrupt/notification suppression") broke vring call
because vq->last_used_idx is never updated by vhost_scsi. The
vq->last_used_idx field is not even available via the librte_vhost
public API, so VIRTIO_RING_F_EVENT_IDX is currently only usable by the
built-in virtio_net.c driver in librte_vhost.
This patch drops VIRTIO_RING_F_EVENT_IDX from vhost_scsi so that vring
call works again.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Acked-by: Yuanhan Liu <yliu@fridaylinux.org>
Since the DPDK build now includes both static and shared libraries, we need
a new way to enable building the examples using either method from the one
installation. To do this, we add in a default "shared" target, and a
separate "static" target which links in the DPDK static libraries. In both
cases, the final application name is symlinked to the last-built static or
shared target, with both binaries able to co-exist in the build directory.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Luca Boccassi <bluca@debian.org>
Change the example app Makefiles to query if DPDK is installed and
registered using pkg-config. If so, build directly using pkg-config info,
otherwise fall back to using the original build system with RTE_SDK and
RTE_TARGET
This commit changes the makefiles for the basic examples, i.e. those which
do not have multiple subdirectories underneath the main examples dir.
Examples not covered are:
* ethtool
* multi_process
* performance-thread
* quota_watermark
* netmap_compat
* server_node_efd
* vm_power_manager
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Luca Boccassi <bluca@debian.org>
Reorder the text in the makefiles, so that the app name and the source
files are listed first. This then will allow them to be shared later in a
combined makefile building with pkg-config and RTE_SDK-based build system.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Luca Boccassi <bluca@debian.org>
Add support for having selected example apps built as part of a meson,
ninja build. By default none are built, and those to be built should be
named directly in the -Dexamples='' meson configuration argument.
This is useful for developers working on a feature who want to use a
suitable example, or examples, to test that feature, as they can compile
everything up in one go, and run the example without having to do a ninja
install first.
This commit adds examples which don't consist of multiple apps in
subdirectories to the meson build, so they can be built by default by
passing -Dexamples parameter to meson.
Not included are the following examples:
* ethtool
* multi-process
* netmap_compat
* performance-thread
* quota_watermark
* server_node_efd
* vm_power_manager
To test the apps added here, use the following command, merged to one line,
to add them to your meson build (command to be run inside the build
directory):
meson configure -Dexamples=bbdev_app,bond,cmdline,distributor,\
eventdev_pipeline_sw_pmd, exception_path,helloworld,\
ip_fragmentation,ip_pipeline,ip_reassembly, ipsec-secgw,\
ipv4_multicast,kni,l2fwd-cat,l2fwd-crypto,l2fwd-jobstats,\
l2fwd-keepalive,l2fwd,l3fwd-acl,l3fwd-power,l3fwd-vf,l3fwd,\
link_status_interrupt,load_balancer,packet_ordering,ptpclient,\
qos_meter,qos_sched,rxtx_callbacks,skeleton,tep_termination,\
timer,vhost,vhost_scsi,vmdq,vmdq_dcb
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Luca Boccassi <bluca@debian.org>
Users of librte_vhost currently implement the vring call operation
themselves. Each caller performs the operation slightly differently.
This patch introduces a new librte_vhost API called
rte_vhost_vring_call() that performs the operation so that vhost-user
applications don't have to duplicate it.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Yuanhan Liu <yliu@fridaylinux.org>
Replace the BSD license header with the SPDX tag for files
with only an Intel copyright on them.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Use snprintf instead strncpy to get safe null string termination.
There was possible to get not terminated string after strncpy operation.
Coverity issue: 158631
Fixes: db75c7af19 ("examples/vhost_scsi: introduce a new sample app")
Cc: stable@dpdk.org
Signed-off-by: Jacek Piasecki <jacekx.piasecki@intel.com>
Acked-by: Maxime Coquelin <maxime.coquelin@redhat.com>
vhost-user protocol is common to many virtio devices, such as
virtio_net/virtio_scsi/virtio_blk. Since DPDK vhost library
removed the NET specific data structures, the vhost library
is common to other virtio devices, such as virtio-scsi.
Here we introduce a simple memory based block device that
can be presented to Guest VM through vhost-user-scsi-pci
controller. Similar with vhost-net, the sample application
will process the I/Os sent via virt rings.
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
