Update p9 to support flipcall.

PiperOrigin-RevId: 268845090

1 files changed, 8 insertions, 1 deletions

diff --git a/pkg/p9/version.go b/pkg/p9/version.go
index c2a2885ae..f1ffdd23a 100644
--- a/pkg/p9/version.go
+++ b/pkg/p9/version.go
@@ -26,7 +26,7 @@ const (
 	//
 	// Clients are expected to start requesting this version number and
 	// to continuously decrement it until a Tversion request succeeds.
-	highestSupportedVersion uint32 = 7
+	highestSupportedVersion uint32 = 8
 
 	// lowestSupportedVersion is the lowest supported version X in a
 	// version string of the format 9P2000.L.Google.X.
@@ -148,3 +148,10 @@ func VersionSupportsMultiUser(v uint32) bool {
 func versionSupportsTallocate(v uint32) bool {
 	return v >= 7
 }
+
+// versionSupportsFlipcall returns true if version v supports IPC channels from
+// the flipcall package. Note that these must be negotiated, but this version
+// string indicates that such a facility exists.
+func versionSupportsFlipcall(v uint32) bool {
+	return v >= 8
+}