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path: root/src/vnet/devices/virtio/vhost-user.h
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2017-09-09move unix_file_* code to vppinfraDamjan Marion1-1/+1
This will allow us to use this code in client libraries without vlib. Change-Id: I8557b752496841ba588aa36b6082cbe2cd1867fe Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-08-31vhost: Disallow interrupt mode config if driver opts out interrupt supportSteven1-0/+1
According to the spec, supporting interrupt mode from the driver is optional, not a must. When interrupt mode is configured on the interface, we should check to make sure that the driver didn't opt out for the kickfd support and reject the configuration if it did. Change-Id: I7d3dbaddde65458e1a6a802754a3768ae8685a0e Signed-off-by: Steven <sluong@cisco.com>
2017-08-30vhost: Cache qsz_mask instead of qsz in vhost_user_vring_tSteven1-1/+1
In the data path, we grab qsz from vhost_user_vring_t to compute qsz_mask and store it in a stack variable to use on many occasions. We never use qsz for any meaningful purpose. It is more useful to cache qsz_mask in vhost_user_vring_t to avoid the needless computation in the data path. Change-Id: Idf4d94a9754d5c75c899f1f4f59602275b9904a6 Signed-off-by: Steven <sluong@cisco.com>
2017-06-02vhost: add debug vhost-user on | off CLISteven1-0/+3
Add runtime debug vhost-user on | off CLI to facilitate troubleshooting. This feature is needed to avoid recompiling the code to debug vhost issues. The debugging messages should not be on the data path to avoid performance hit. Change-Id: I4c40f65dbb222557cba3fb8706fa3b7b62eec95f Signed-off-by: Steven <sluong@cisco.com>
2017-05-22vhost: migrate to use device infra for worker thread assignment, rx-mode.Steven1-35/+10
and add adaptive mode support to receive queue - Migrate vhost to use device infra which does the interface/queue to worker thread assignment. - Retire vhost thread CLI and corresponding code which assigns interface/queue to worker thread. set interface placement should be used instead to customize the interface/queue to worker thread assignment. - Retire vhost interrupt/polling option when creating vhost-user interface. Instead, set interface rx-mode should be used. - Add code in vnet_device_input_unassign_thread to change the node state to interrupt if the last polling interface has left the worker thread for the device of the corresponding interface/queue. - Add adaptive mode support. The node state is set to interrupt initially. When the scheduler detects a burst of traffic, it switches the input node to polling. Then we inform the device that we don't need interrupt notification. When the traffic subsides, the scheduler switches the input node back to interrupt. Then we immediately tell the driver that we want interrupt notification again. - Remove some duplicate code in vlib/main.c Change-Id: Id19bb1b9e50e6521c6464f470f5825c26924d3a8 Signed-off-by: Steven <sluong@cisco.com>
2017-04-28vhost: Disallow duplicate path name for vhost interfaceSteven1-0/+2
When creating or modifying a vhost interface, verify if the path name already existed and reject the command. Change-Id: I8b2d33b77c847f774492874f7d194fa72c488479 Signed-off-by: Steven <sluong@cisco.com>
2017-04-11vhost: interrupt mode enhancementsSteven1-0/+1
- Add cpu index to the vring structure for quick lookup - Reduce the code that needs to be protected by vlib_worker_thread_barrier_sync - Set minimum timer no less than 1 ms Change-Id: Iafef4bf6879a8efb350abf4e0f517e38f7ff7a8b Signed-off-by: Steven <sluong@cisco.com>
2017-03-22vhost: support interrupt modeSteven1-0/+11
vhost currently supports only polling mode. This patch is to add interrupt mode. When the interface is configured for interrupt mode, our input node does not get called unless there is a packet in the vring. If a particular CPU has one interface configured for polling mode and another in interrupt, the input node is set to polling for that CPU. This diffs also includes two crashes in vlib's dispatch_node. One is included in https://gerrit.fd.io/r/#/c/5516. The other crash is in the ASSERT. The ASSERT can become true when the caller of dispatch_node is in a loop. The first call converted the node to polling. The second call thereafter will hit the ASSERT. Change-Id: If17b6d48b20d7d8605c6a161459828637173cd32 Signed-off-by: Steven <sluong@cisco.com>
2017-03-08vhost: binary API changes for interrupt modeSteven1-2/+12
Add operation_mode for create_vhost_user_if, modify_vhost_user_if, and sw_interface_vhost_user_details. Only polling mode is supported for these APIs. Other mode is rejected and gets VNET_API_ERROR_UNIMPLEMENTED error. Change-Id: I0596f4e2c087aa2b6f78eb3e0b63910b1859641e Signed-off-by: Steven <sluong@cisco.com>
2017-03-01dpdk: be a pluginDamjan Marion1-11/+0
Change-Id: I238258cdeb77035adc5e88903d824593d0a1da90 Signed-off-by: Damjan Marion <damarion@cisco.com>
2016-12-28Reorganize source tree to use single autotools instanceDamjan Marion1-0/+350
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>