1 files changed, 0 insertions, 60 deletions
diff --git a/src/user/app/netstack/util.c b/src/user/app/netstack/util.c
deleted file mode 100644
index 68092aa..0000000
--- a/src/user/app/netstack/util.c
+++ /dev/null
@@ -1,60 +0,0 @@
-#include "util.h"
-
-/* https://www.w3.org/TR/PNG/#D-CRCAppendix */
-static uint32_t crc_table[256];
-uint32_t crc32(const uint8_t *buf, size_t len) {
-	if (!crc_table[1]) {
-		for (int i = 0; i < 256; i++) {
-			uint32_t c = i;
-			for (int j = 0; j < 8; j++)
-				c = ((c&1) ? 0xedb88320 : 0) ^ (c >> 1);
-			crc_table[i] = c;
-		}
-	}
-
-	uint32_t c = 0xFFFFFFFF;
-	for (size_t i = 0; i < len; i++)
-		c = crc_table[(c ^ buf[i]) & 0xff] ^ (c >> 8);
-	return ~c;
-}
-
-uint16_t ip_checksum(const uint8_t *buf, size_t len) {
-	uint32_t c = 0;
-	while (len >= 2) {
-		c += nget16(buf);
-		buf += 2; len -= 2;
-	}
-	if (len) c += (*buf) << 8;
-	while (c > 0xFFFF) c = (c & 0xFFFF) + (c >> 16);
-	return ~c;
-}
-
-uint16_t ip_checksumphdr(
-	const uint8_t *buf, size_t len,
-	uint32_t ip1, uint32_t ip2,
-	uint16_t proto)
-{
-	uint32_t c = (uint16_t)~ip_checksum(buf, len);
-	c += (ip1 & 0xFFFF) + (ip1 >> 16);
-	c += (ip2 & 0xFFFF) + (ip2 >> 16);
-	c += proto + len;
-	while (c > 0xFFFF) c = (c & 0xFFFF) + (c >> 16);
-	return ~c;
-}
-
-int ip_parse(const char *s, uint32_t *dest) {
-	if (!s) return -1;
-
-	uint32_t ip = strtol(s, (char**)&s, 0);
-	int parts = 1;
-	for (; parts < 4; parts++) {
-		if (!*s) break;
-		if (*s++ != '.') return -1;
-		ip <<= 8;
-		ip += strtol(s, (char**)&s, 0);
-	}
-	if (parts > 1)
-		ip = ((ip & 0xFFFFFF00) << 8 * (4 - parts)) | (ip & 0xFF);
-	*dest = ip;
-	return 0;
-}