mctp-estack: Add clear_eid()

A counterpart of set_eid(). set_eid() doesn't allow setting a NULL EID.

Signed-off-by: Matt Johnston <[email protected]>

Author: mkj

mctp-estack/src/lib.rs

@@ -49,7 +49,7 @@ pub use heapless::Vec;
 
 use heapless::{Entry, FnvIndexMap};
 
-use mctp::{Eid, Error, MsgIC, MsgType, Result, Tag, TagValue};
+use mctp::{Eid, Error, MsgIC, MsgType, Result, Tag, TagValue, MCTP_ADDR_NULL};
 
 #[cfg(not(any(feature = "log", feature = "defmt")))]
 compile_error!("Either log or defmt feature must be enabled");
@@ -490,6 +490,11 @@ impl Stack {
         Ok(())
     }
 
+    /// Clears the local Endpoint ID.
+    pub fn clear_eid(&mut self) {
+        self.own_eid = MCTP_ADDR_NULL;
+    }
+
     /// Retrieves  the local Endpoint ID.
     pub fn eid(&self) -> Eid {
         self.own_eid

mctp-estack/src/router.rs

@@ -812,6 +812,12 @@ impl<'r> Router<'r> {
         let mut inner = self.inner.lock().await;
         inner.stack.set_eid(eid.0)
     }
+
+    /// Clears the EID assigned to the local stack
+    pub async fn clear_eid(&self) {
+        let mut inner = self.inner.lock().await;
+        inner.stack.clear_eid();
+    }
 }
 
 impl core::fmt::Debug for Router<'_> {