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authorJoe Hershberger <joe.hershberger@ni.com>2012-05-23 07:58:03 +0000
committerJoe Hershberger <joe.hershberger@ni.com>2012-05-23 14:19:24 -0500
commit8b9c53221f6ce30ad132e3202e6d445bc21ed8aa (patch)
tree0431dfeaae255e0d10bc15408f6f0c2193f28bc6 /net/rarp.c
parenta36b12f95a29647a06b5459198684fc142482020 (diff)
downloadu-boot-linaro-stable-8b9c53221f6ce30ad132e3202e6d445bc21ed8aa.tar.gz
net: Move RARP receive logic out of net.c
Separate this functionality out of the net.c behemoth Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'net/rarp.c')
-rw-r--r--net/rarp.c51
1 files changed, 32 insertions, 19 deletions
diff --git a/net/rarp.c b/net/rarp.c
index 5a813a290..660a02c57 100644
--- a/net/rarp.c
+++ b/net/rarp.c
@@ -29,33 +29,50 @@
#include "rarp.h"
#include "tftp.h"
-#define TIMEOUT 5000UL /* Milliseconds before trying BOOTP again */
+#define TIMEOUT 5000UL /* Milliseconds before trying BOOTP again */
#ifndef CONFIG_NET_RETRY_COUNT
-# define TIMEOUT_COUNT 5 /* # of timeouts before giving up */
+#define TIMEOUT_COUNT 5 /* # of timeouts before giving up */
#else
-# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
+#define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
#endif
-
-int RarpTry;
+int RarpTry;
/*
* Handle a RARP received packet.
*/
-static void
-RarpHandler(uchar *dummi0, unsigned dummi1, IPaddr_t sip, unsigned dummi2,
- unsigned dummi3)
+void rarp_receive(IP_t *ip, unsigned len)
{
- debug("Got good RARP\n");
- net_auto_load();
+ ARP_t *arp;
+
+ debug("Got RARP\n");
+ arp = (ARP_t *)ip;
+ if (len < ARP_HDR_SIZE) {
+ printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
+ return;
+ }
+
+ if ((ntohs(arp->ar_op) != RARPOP_REPLY) ||
+ (ntohs(arp->ar_hrd) != ARP_ETHER) ||
+ (ntohs(arp->ar_pro) != PROT_IP) ||
+ (arp->ar_hln != 6) || (arp->ar_pln != 4)) {
+
+ puts("invalid RARP header\n");
+ } else {
+ NetCopyIP(&NetOurIP, &arp->ar_data[16]);
+ if (NetServerIP == 0)
+ NetCopyIP(&NetServerIP, &arp->ar_data[6]);
+ memcpy(NetServerEther, &arp->ar_data[0], 6);
+ debug("Got good RARP\n");
+ net_auto_load();
+ }
}
/*
* Timeout on BOOTP request.
*/
-static void
-RarpTimeout(void)
+static void RarpTimeout(void)
{
if (RarpTry >= TIMEOUT_COUNT) {
puts("\nRetry count exceeded; starting again\n");
@@ -67,10 +84,8 @@ RarpTimeout(void)
}
-void
-RarpRequest(void)
+void RarpRequest(void)
{
- int i;
uchar *pkt;
ARP_t *rarp;
@@ -90,12 +105,10 @@ RarpRequest(void)
memcpy(&rarp->ar_data[6], &NetOurIP, 4); /* source IP addr */
/* dest ET addr = source ET addr ??*/
memcpy(&rarp->ar_data[10], NetOurEther, 6);
- /* dest. IP addr set to broadcast */
- for (i = 0; i <= 3; i++)
- rarp->ar_data[16 + i] = 0xff;
+ /* dest IP addr set to broadcast */
+ memset(&rarp->ar_data[16], 0xff, 4);
NetSendPacket(NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE);
NetSetTimeout(TIMEOUT, RarpTimeout);
- NetSetHandler(RarpHandler);
}