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vhost_user_backend: Make the backend a server

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The code needs to initialize a listener to accept connection from the
VMM being the client in this case.

Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2019-09-23 11:30:55 -07:00
parent c1b26b1fab
commit 1aab372a06
1 changed files with 10 additions and 4 deletions
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14
vhost_user_backend/src/lib.rs
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@ -18,7 +18,7 @@ use vhost_rs::vhost_user::message::{
VHOST_USER_CONFIG_OFFSET, VHOST_USER_CONFIG_SIZE, VHOST_USER_CONFIG_OFFSET, VHOST_USER_CONFIG_SIZE,
}; };
use vhost_rs::vhost_user::{ use vhost_rs::vhost_user::{
Error as VhostUserError, Result as VhostUserResult, SlaveReqHandler, VhostUserSlaveReqHandler, Error as VhostUserError, Result as VhostUserResult, SlaveListener, VhostUserSlaveReqHandler,
}; };
use vm_memory::guest_memory::FileOffset; use vm_memory::guest_memory::FileOffset;
use vm_memory::{GuestAddress, GuestMemoryMmap}; use vm_memory::{GuestAddress, GuestMemoryMmap};
@ -30,6 +30,8 @@ use vmm_sys_util::eventfd::EventFd;
pub enum Error { pub enum Error {
/// Failed to create a new vhost-user handler. /// Failed to create a new vhost-user handler.
NewVhostUserHandler(VhostUserHandlerError), NewVhostUserHandler(VhostUserHandlerError),
/// Failed creating vhost-user slave listener.
CreateSlaveListener(VhostUserError),
/// Failed creating vhost-user slave handler. /// Failed creating vhost-user slave handler.
CreateSlaveReqHandler(VhostUserError), CreateSlaveReqHandler(VhostUserError),
/// Failed starting daemon thread. /// Failed starting daemon thread.
@ -126,9 +128,13 @@ impl<S: VhostUserBackend> VhostUserDaemon<S> {
/// that should be terminating once the other end of the socket (the VMM) /// that should be terminating once the other end of the socket (the VMM)
/// disconnects. /// disconnects.
pub fn start(&mut self) -> Result<()> { pub fn start(&mut self) -> Result<()> {
let mut slave_handler = let mut slave_listener =
SlaveReqHandler::connect(self.sock_path.as_str(), self.handler.clone()) SlaveListener::new(self.sock_path.as_str(), false, self.handler.clone())
.map_err(Error::CreateSlaveReqHandler)?; .map_err(Error::CreateSlaveListener)?;
let mut slave_handler = slave_listener
.accept()
.map_err(Error::CreateSlaveReqHandler)?
.unwrap();
let handle = thread::Builder::new() let handle = thread::Builder::new()
.name(self.name.clone()) .name(self.name.clone())
.spawn(move || loop { .spawn(move || loop {