passt, qrap, README: Update notes and documentation for AF_UNIX support in qemu

We can't get rid of qrap quite yet, but at least we should start
telling users it's not going to be needed anymore starting from qemu
7.2.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 4 insertions, 6 deletions

diff --git a/README.md b/README.md
index e1df972..0e2ca78 100644
--- a/README.md
+++ b/README.md
@@ -368,13 +368,11 @@ speeding up local connections, and usually requiring NAT. _pasta_:
 ## Interfaces and Environment
 
 _passt_ exchanges packets with _qemu_ via UNIX domain socket, using the `socket`
-back-end in qemu. Currently, qemu can only connect to a listening process via
-TCP. Two temporary solutions are available:
+back-end in qemu. This is supported since qemu 7.2.
 
-* a [patch](/passt/tree/qemu) for qemu
-* a wrapper, [qrap](/passt/tree/qrap.c), that connects to a
-  UNIX domain socket and starts qemu, which can now use the file descriptor
-  that's already opened
+For older versions, the [qrap](/passt/tree/qrap.c) wrapper can be used to
+connect to a UNIX domain socket and to start qemu, which can now use the file
+descriptor that's already opened.
 
 This approach, compared to using a _tap_ device, doesn't require any security
 capabilities, as we don't need to create any interface.