From 0a8c0daa9f48093682a3197ad24d37c16dc32c99 Mon Sep 17 00:00:00 2001
From: Brian Cully <bjc@kublai.com>
Date: Sat, 10 Aug 2019 14:19:38 -0400
Subject: Use endpoint's max packet size for pipe.

---
 src/pipe/pck_size.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/pipe/pck_size.rs')

diff --git a/src/pipe/pck_size.rs b/src/pipe/pck_size.rs
index acc499f..c95140d 100644
--- a/src/pipe/pck_size.rs
+++ b/src/pipe/pck_size.rs
@@ -29,6 +29,16 @@ impl PckSize {
         f(&mut w);
         self.0 = w.bits;
     }
+
+    pub fn modify<F>(&mut self, f: F)
+    where
+        for<'w> F: FnOnce(&R, &'w mut W) -> &'w mut W,
+    {
+        let r = R { bits: self.0 };
+        let mut w = W { bits: self.0 };
+        f(&r, &mut w);
+        self.0 = w.bits;
+    }
 }
 
 impl From<u32> for PckSize {
-- 
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