From 5c4b2b5c3e79795cb4b942420b13acf74e4ab6b6 Mon Sep 17 00:00:00 2001
From: Cory Zimmerman <corzimmerman@tesla.com>
Date: Sat, 6 Jul 2024 22:08:32 -0700
Subject: [PATCH 1/2] api revisions for zero-alloc sendmmsg and recvmmsg

---
 src/sys/socket/mod.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/sys/socket/mod.rs b/src/sys/socket/mod.rs
index cb7618a932..7375bae6bc 100644
--- a/src/sys/socket/mod.rs
+++ b/src/sys/socket/mod.rs
@@ -1506,7 +1506,7 @@ pub fn sendmmsg<'a, XS, AS, C, I, S>(
     flags: MsgFlags
 ) -> crate::Result<MultiResults<'a, S>>
     where
-        XS: IntoIterator<Item = &'a I>,
+        XS: IntoIterator<Item = I>,
         AS: AsRef<[Option<S>]>,
         I: AsRef<[IoSlice<'a>]> + 'a,
         C: AsRef<[ControlMessage<'a>]> + 'a,
@@ -1657,11 +1657,11 @@ pub fn recvmmsg<'a, XS, S, I>(
     mut timeout: Option<crate::sys::time::TimeSpec>,
 ) -> crate::Result<MultiResults<'a, S>>
 where
-    XS: IntoIterator<Item = &'a mut I>,
+    XS: IntoIterator<Item = I>,
     I: AsMut<[IoSliceMut<'a>]> + 'a,
 {
     let mut count = 0;
-    for (i, (slice, mmsghdr)) in slices.into_iter().zip(data.items.iter_mut()).enumerate() {
+    for (i, (mut slice, mmsghdr)) in slices.into_iter().zip(data.items.iter_mut()).enumerate() {
         let p = &mut mmsghdr.msg_hdr;
         p.msg_iov = slice.as_mut().as_mut_ptr().cast();
         p.msg_iovlen = slice.as_mut().len() as _;

From 6c03e6dd2469aafc90f70cd934cf123b6ad0c554 Mon Sep 17 00:00:00 2001
From: Cory Zimmerman <corzimmerman@tesla.com>
Date: Sat, 6 Jul 2024 22:35:29 -0700
Subject: [PATCH 2/2] add 2459.changed.md

---
 changelog/2459.changed.md | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 changelog/2459.changed.md

diff --git a/changelog/2459.changed.md b/changelog/2459.changed.md
new file mode 100644
index 0000000000..32ba83690e
--- /dev/null
+++ b/changelog/2459.changed.md
@@ -0,0 +1 @@
+Change generics on `recvmmsg` and `sendmmsg` to support memory reuse.
\ No newline at end of file