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vhost_user: Add Inflight I/O tracking support

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The inflight I/O tracking feature is useful for handling crashes and
disconnections from the backend. It allows the backend to rely on a
buffer that was shared earlier with the VMM to restore to the previous
state it was before the crash.

This feature depends on the availability of the protocol feature
VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD, and it implements both
VHOST_USER_GET_INFLIGHT_FD and VHOST_USER_SET_INFLIGHT_FD messages.

Fixes #43

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2021-06-08 10:24:23 +02:00
parent 30ba3e7bbe
commit a8ff939161
7 changed files with 201 additions and 3 deletions
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1
Cargo.toml
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@ -26,4 +26,5 @@ vmm-sys-util = ">=0.3.1"
vm-memory = { version = "0.2.0", optional = true }
[dev-dependencies]
tempfile = ">=3.2.0"
vm-memory = { version = "0.2.0", features=["backend-mmap"] }