net: Refactor to separate the UDP handler from the ARP handler

Call a built-in dummy if none is registered... don't require
protocols to register a handler (eliminating dummies)
NetConsole now uses the ARP handler when waiting on arp
(instead of needing a #define hack in arp.c)
Clear handlers at the end of net loop

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Simon Glass <sjg@chromium.org>

1 files changed, 0 insertions, 8 deletions

diff --git a/net/cdp.c b/net/cdp.c
index fa92409..3d9559e 100644
--- a/net/cdp.c
+++ b/net/cdp.c
@@ -238,13 +238,6 @@ CDPTimeout(void)
 		net_set_state(NETLOOP_SUCCESS);
 }
 
-static void
-CDPDummyHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src,
-		unsigned len)
-{
-	/* nothing */
-}
-
 void cdp_receive(const uchar *pkt, unsigned len)
 {
 	const uchar *t;
@@ -368,7 +361,6 @@ CDPStart(void)
 	CDPApplianceVLAN = htons(-1);
 
 	NetSetTimeout(CDP_TIMEOUT, CDPTimeout);
-	NetSetHandler(CDPDummyHandler);
 
 	CDPSendTrigger();
 }