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authorTiwei Bie <tiwei.bie@intel.com>2018-05-24 18:33:32 +0800
committerMichael S. Tsirkin <mst@redhat.com>2018-05-24 21:14:10 +0300
commit5f57fbeaaf7c4cd33152d7f2e449caab4d4209d9 (patch)
tree01b474e9f5c11a213bd94bd59e92822ae49fef85 /docs/interop
parent988a27754bbbc45698f7acb54352e5a1ae699514 (diff)
vhost-user: allow slave to send fds via slave channel
Introduce VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD protocol feature to allow slave to send at most 8 descriptors in each message to master via ancillary data using the slave channel. Suggested-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Tiwei Bie <tiwei.bie@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'docs/interop')
-rw-r--r--docs/interop/vhost-user.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/docs/interop/vhost-user.txt b/docs/interop/vhost-user.txt
index 534caab18a..682a683eb4 100644
--- a/docs/interop/vhost-user.txt
+++ b/docs/interop/vhost-user.txt
@@ -367,6 +367,10 @@ The fd is provided via VHOST_USER_SET_SLAVE_REQ_FD ancillary data.
A slave may then send VHOST_USER_SLAVE_* messages to the master
using this fd communication channel.
+If VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD protocol feature is negotiated,
+slave can send file descriptors (at most 8 descriptors in each message)
+to master via ancillary data using this fd communication channel.
+
Protocol features
-----------------
@@ -380,6 +384,7 @@ Protocol features
#define VHOST_USER_PROTOCOL_F_CRYPTO_SESSION 7
#define VHOST_USER_PROTOCOL_F_PAGEFAULT 8
#define VHOST_USER_PROTOCOL_F_CONFIG 9
+#define VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD 10
Master message types
--------------------