Now DPDK vhost lib has been generic enough, that it can be used to
implement any vhost-user drivers.
For example, this patch implements a very simple vhost-user net driver,
mainly for demonstrating how to use those generic vhost APIs.
And when the --builtin-net-driver option is used, the example virtio-net
driver code will be invoked, instead of the one provided from the vhost
library.
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
They are virtio-net specific and should be defined inside the virtio-net
driver.
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
With all the previous prepare works, we are just one step away from
the final ABI refactoring. That is, to change current API to let them
stick to vid instead of the old virtio_net dev.
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Tested-by: Rich Lane <rich.lane@bigswitch.com>
Acked-by: Rich Lane <rich.lane@bigswitch.com>
I failed to figure out what does "fh" mean here for a long while.
The only guess I could have had is "file handle". So, you get the
point that it's not well named.
I then figured it out that "fh" is derived from the fuse lib, and
my above guess is right. However, device_fh represents a virtio
net device ID. Therefore, here I rename it to vid (Virtio-net device
ID, or Vhost device ID; choose one you prefer) to make it easier for
understanding.
This name (vid) then will be considered to the only interface to
applications. That's another reason to do the rename: it's our
interface, make it more understandable.
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Tested-by: Rich Lane <rich.lane@bigswitch.com>
Acked-by: Rich Lane <rich.lane@bigswitch.com>
Make a copy of virtio device id (device_fh) from the virtio_net struct,
so that we could have less dependency on the virtio_net struct.
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Tested-by: Rich Lane <rich.lane@bigswitch.com>
Acked-by: Rich Lane <rich.lane@bigswitch.com>
There are two tailq lists, one for logging all vhost devices, another
one for logging vhost devices distributed on a specific core. However,
there is just one tailq entry, named "next", to chain the two list,
which is wrong and could result to a corrupted tailq list, that the
tailq list might always be non-empty: the entry is still there even
after you have invoked TAILQ_REMOVE several times.
Fix it by introducing two tailq entries, one for each list.
Fixes: 45657a5c68 ("examples/vhost: use tailq to link vhost devices")
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
It's reported that it's has not been working for a long while. And due
to it's complex, it's better to redesign it than to fix it to make it
work again.
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
The debug logs must be enabled at compile-time and run-time.
There are also some internal flags in some examples to enable the debug
logs of the applications. They are now enabled in debug configs and
can be disabled thanks to the more generic logtype mechanism:
rte_set_log_type(RTE_LOGTYPE_USER1, 0);
Removing these #ifdef allows to test these code branches more easily
and avoid dead code pitfalls.
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Signed-off-by: David Marchand <david.marchand@6wind.com>
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
check_hpa_regions, fill_hpa_memory_regions and hpa memory region
data structure are added back from old virtio-net.c.
Add hpa (host physical address) region generation/destroy logic.
gpa<->hpa memory translation regions are generated at new_device,
when a virtio device is ready for packet processing.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
Define vhost_dev data structure.
Change reference to virtio_dev to vhost_dev.
The vhost example use vdev data structure for switching related logic
and container for virtio_dev.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
This patch copies two files main.c/main.h from most recent vhost example
(before transforming into a library) as the base for new vhost example.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
Those files will be refactored in subsequent patches to form user space
vhost library.
Makefile and main.h are removed.
main.c is renamed to vhost_rxtx.c and will provide vring enqueue/dequeue API.
virtio-net.h is renamed to rte_virtio_net.h which is the API header file.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
[Thomas: remove from examples Makefile and merge file renaming]
RTE_LOGTYPE_CONFIG, RTE_LOGTYPE_DATA and RTE_LOGTYPE_PORT are renamed
by adding VHOST prefix.
It prevents from conflict with new RTE_LOGTYPE_PORT of packet framework.
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
This commit removes trailing whitespace from lines in files. Almost all
files are affected, as the BSD license copyright header had trailing
whitespace on 4 lines in it [hence the number of files reporting 8 lines
changed in the diffstat].
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
[Thomas: remove spaces before tabs in libs]
[Thomas: remove more trailing spaces in non-C files]
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
The vhost sample application demonstrates integration of the Intel(R) Data Plane
Development Kit (Intel(R) DPDK) with the Linux KVM hypervisor by implementing the
vhost-net offload API. The sample application performs simple packet switching
between virtual machines based on Media Access Control (MAC) address or Virtual
Local Area Network (VLAN) tag. The splitting of ethernet traffic from an external switch
is performed in hardware by the Virtual Machine Device Queues (VMDQ) and Data
Center Bridging (DCB) features of the Intel(R) 82599 10 Gigabit Ethernet Controller.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
