This patch fixes the issue whereby when using userspace vhost ports
in the context of vSwitching, the name provided to the hypervisor/QEMU
of the vhost tap device needs to be exposed in the library, in order
for the vSwitch to be able to direct packets to the correct device.
This patch introduces an 'ifname' member to the virtio-net structure
which is populated with the tap device name when QEMU is brought up
with a vhost device.
Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
Signed-off-by: Anthony Fee <anthonyx.fee@intel.com>
Acked-by: Huawei Xie <huawei.xie@intel.com>
This is to enable user space vhost receiving and forwarding broadcast
and multicast packets:
Use new option in command line to enable promisc mode;
Enable 2 bits in VMDQ RX mode: ETH_VMDQ_ACCEPT_BROADCAST and ETH_VMDQ_ACCEPT_MULTICAST.
Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Commit aec8283d47 fixes the compilation issue, but it leads to
one runtime issue: early exit wrongly. In some case, 'path' is NULL, but
'resolved_path' has effective path, it should continue going ahead rather
than exit.
This is due to that qemu unlink the file after it maps the huge page file.
In this special case, it is ok to check the resolved path
when path is NULL if errno indicates "No such file or directory".
Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Acked-by: Huawei Xie <huawei.xie@intel.com>
Fix alignment issues, lengthy lines, misordered type and other coding style issues.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
It fixes this compilation complain: "error: ignoring return value of 'realpath',
declared with attribute warn_unused_result [-Werror=unused-result]"
Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Tested-by: Jingguo Fu <jingguox.fu@intel.com>
vhost lib is turned off by default.
vhost lib is based on cuse, which requires fuse development package
to be installed.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
[Thomas: fix build dependencies]
1) FIXME: concurrent calls to vhost set mem table from different guests
could cause mem_temp to be overrided.
2) TODO: cmpset cost quite some cpu cyles. Allow app to disable this
feature if there is no contention in real workload.
3) FIXME: fix scatter gather mbuf copy to vhost vring chained buffers.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
priv field could be used to store application specific context.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
VHOST_SUPPORTED_FEATURES is the feature mask that vhost lib supports.
VHOST_FEATURES is the feature mask vhost currently supports after some features are turned on/off.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
[Thomas: split patch]
Rename init_virtio_net as rte_vhost_callback_register API.
rte_vhost_callback_register register the callbacks called when a
vhost device is created and ready to be added to data processing core
or is de-actived by guest.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
vhost_net_device_ops is internal implementation in vhost lib.
register_cuse_device will be vhost driver register API.
There is no need for it to know the internal vhost ops.
Instead, that ops is retrieved in register_cuse_device
through get_virtio_net_callbacks.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
rte_vhost_enqueue_burst copies host packets to guest.
rte_vhost_enqueue_burst will call virtio_dev_rx and virtio_dev_merge_rx
respectively depending on whether merge-able feature is negotiated or not
in the vhost device.
virtio_dev_merge_tx is renamed to rte_vhost_dequeue_burst.
rte_vhost_dequeue_burst gets to-be-sent packets from guest.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
[Thomas: merged patches]
queue_id parameter is added to Rx/Tx functions for multiple queue support
in future.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
As a lib, we have no idea the app defined mbuf size.
This patch will calculate mbuf size dynamically.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
This patch makes virtio_dev_merge_tx return the received packets to app layer.
Previously virtio_tx_route was called to route these packets and then free them.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
The structure virtio_net_config_ll is moved to virtio_net.c.
It is related to internal virtio device management,
so it should not be exposed to other files.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
It was used to wait some time and retry when there are not enough descriptors.
App could implement this policy easily if it needs.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
Currently zero copy feature isn't generic as it couples closely with nic.
It isn't put in the vhost lib in this version.
gpa(guest physical address) to hpa(host physical address) mapping region
logic is removed.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
The following logics will be moved to vhost example:
1. mac learning, which is used to learn the mac address from the first
transmitted packet of guest and bind the vhost device to a queue in a
pool of VMDQ.
2. VMDQ mac/vlan filter: Each pool the vhost device is bind to is
assigned a mac/vlan filter.
3. num_devices is used to specify the maximum vhost devices the nic supports.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
Remove all other codes and only keep virtio_dev_rx, copy_from_mbuf_to_vring,
virtio_dev_merge_rx, virtio_dev_merge_tx.
Previous vhost merge-able feature introduces another version of tx function,
virtio_dev_merge_tx. Actually it is not related to merge-able feature but is
the fix for memcpy between mbuf and vring descriptors.
This lib will create the tx functions based on virtio_dev_merge_tx.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
[Thomas: do not remove code used or moved later]
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]
