From 46b24bf442d4c8213ba1d29d4acc328e6cc02d53 Mon Sep 17 00:00:00 2001
From: Martin Preuss <martin@aquamaniac.de>
Date: Sun, 4 May 2025 03:34:11 +0200
Subject: [PATCH] avr/modules/network: disable interrupts on alloc/release.

---
 avr/modules/network/buffer.asm | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/avr/modules/network/buffer.asm b/avr/modules/network/buffer.asm
index 41faff0..e3d48cf 100644
--- a/avr/modules/network/buffer.asm
+++ b/avr/modules/network/buffer.asm
@@ -42,6 +42,22 @@ NET_Buffer_Init:
 ; @clobbers R16, R17, X
 
 NET_Buffer_Alloc:
+  push r15
+    in r15, SREG
+    cli
+    rcall NET_Buffer_Alloc_noIrq
+    brcc NET_Buffer_Alloc_error
+    out SREG, r15
+  pop r15
+  sec
+  ret
+NET_Buffer_Alloc_error:
+    out SREG, r15
+  pop r15
+  clc
+  ret
+
+NET_Buffer_Alloc_noIrq:
   ldi xl, LOW(netBuffers)
   ldi xh, HIGH(netBuffers)
   m_fixedbuf_reserve NET_BUFFERS_SIZE, NET_BUFFERS_NUM
@@ -61,7 +77,12 @@ NET_Buffer_Alloc_end:
 ; @clobbers R16
 
 NET_Buffer_ReleaseByAddr:
-  m_fixedbuf_release
+  push r15
+    in r15, SREG
+    cli
+    m_fixedbuf_release
+    out SREG, r15
+  pop r15
   ret
 ; @end