1 files changed, 4 insertions, 0 deletions

diff --git a/ot_fdstate.h b/ot_fdstate.h
index 88f685d..c09f018 100644
--- a/ot_fdstate.h
+++ b/ot_fdstate.h
@@ -31,6 +31,10 @@ size_t   fdstate_slots(void);
    generation to quote when asking for it back. expiry of 0 never expires. */
 uint32_t fdstate_open(int fd, void *cookie, ot_time expiry);
 
+/* Which generation a descriptor currently carries, to check an event that
+   was handed out earlier against the connection living there now. */
+uint32_t fdstate_generation(int fd);
+
 /* Ask for exclusive use. Returns 0 if the descriptor has been recycled since
    generation was handed out, or if somebody else is using it. */
 int      fdstate_claim(int fd, uint32_t generation);