From 5f57fbeaaf7c4cd33152d7f2e449caab4d4209d9 Mon Sep 17 00:00:00 2001 From: Tiwei Bie Date: Thu, 24 May 2018 18:33:32 +0800 Subject: 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 Signed-off-by: Tiwei Bie Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- docs/interop/vhost-user.txt | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'docs/interop') 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 -------------------- -- cgit v1.2.3-55-g7522