From 944dd5932decddd77d4f35c65737c3617505ed65 Mon Sep 17 00:00:00 2001
From: Werner Almesberger <werner@almesberger.net>
Date: Tue, 16 Apr 2013 13:55:26 -0300
Subject: [PATCH] tftp.c (format_request): pass opcode as argument

---
 software/bios/tftp.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/software/bios/tftp.c b/software/bios/tftp.c
index e1a8fb529..ff34cc243 100644
--- a/software/bios/tftp.c
+++ b/software/bios/tftp.c
@@ -15,12 +15,12 @@ enum {
 	TFTP_ERROR	= 5,	/* Error */
 };
 
-static int format_request(uint8_t *buf, const char *filename)
+static int format_request(uint8_t *buf, uint16_t op, const char *filename)
 {
 	int len = strlen(filename);
 
-	*buf++ = 0x00; /* Opcode: Request */
-	*buf++ = TFTP_RRQ;
+	*buf++ = op >> 8; /* Opcode */
+	*buf++ = op;
 	memcpy(buf, filename, len);
 	buf += len;
 	*buf++ = 0x00;
@@ -98,7 +98,7 @@ int tftp_get(uint32_t ip, const char *filename, void *buffer)
 	transfer_finished = 0;
 	tries = 5;
 	while(1) {
-		len = format_request(packet_data, filename);
+		len = format_request(packet_data, TFTP_RRQ, filename);
 		microudp_send(PORT_IN, PORT_OUT, len);
 		for(i=0;i<2000000;i++) {
 			microudp_service();