--- zzzz-none-000/linux-5.4.213/arch/arm64/include/asm/checksum.h	2022-09-15 10:04:56.000000000 +0000
+++ miami-7690-761/linux-5.4.213/arch/arm64/include/asm/checksum.h	2024-05-29 11:19:50.000000000 +0000
@@ -36,6 +36,9 @@
 }
 #define ip_fast_csum ip_fast_csum
 
+extern unsigned int do_csum(const unsigned char *buff, int len);
+#define do_csum do_csum
+
 #include <asm-generic/checksum.h>
 
 #endif	/* __ASM_CHECKSUM_H */