From 6ffb06af70faa5657f2c6091fe23500007e2bd44 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Wed, 17 Aug 2022 21:26:29 +0200
Subject: user/ethdump: file per protocol, ethernet frame functions
---
src/user/app/ethdump/util.h | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 src/user/app/ethdump/util.h
(limited to 'src/user/app/ethdump/util.h')
diff --git a/src/user/app/ethdump/util.h b/src/user/app/ethdump/util.h
new file mode 100644
index 0000000..536f270
--- /dev/null
+++ b/src/user/app/ethdump/util.h
@@ -0,0 +1,38 @@
+#pragma once
+#include <stdint.h>
+#include <stdio.h>
+
+#define eprintf(fmt, ...) fprintf(stderr, "ethdump: "fmt"\n" __VA_OPT__(,) __VA_ARGS__)
+
+void hexdump(const void *vbuf, size_t len);
+
+uint32_t crc32(const uint8_t *buf, size_t len);
+
+
+static inline void nput16(void *vbuf, uint16_t n) {
+ uint8_t *b = vbuf;
+ b[0] = n >> 8;
+ b[1] = n >> 0;
+}
+
+static inline void nput32(void *vbuf, uint32_t n) {
+ uint8_t *b = vbuf;
+ b[0] = n >> 24;
+ b[1] = n >> 16;
+ b[2] = n >> 8;
+ b[3] = n >> 0;
+}
+
+static inline uint16_t nget16(const void *vbuf) {
+ const uint8_t *b = vbuf;
+ return (b[0] << 8)
+ | (b[1] << 0);
+}
+
+static inline uint32_t nget32(const void *vbuf) {
+ const uint8_t *b = vbuf;
+ return (b[0] << 24)
+ | (b[1] << 16)
+ | (b[2] << 8)
+ | (b[3] << 0);
+}
--
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