gpxe: delete long since obsolete snapshot of gPXE

gPXE has been deprecated in favor of iPXE for many, many years now.
It is much better than users get it directly from the iPXE project,
since we should no longer need any special modifications for Syslinux
use.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 0 insertions, 180 deletions

diff --git a/gpxe/src/net/ndp.c b/gpxe/src/net/ndp.c
deleted file mode 100644
index 8bea8b32..00000000
--- a/gpxe/src/net/ndp.c
+++ /dev/null
@@ -1,180 +0,0 @@
-#include <stdint.h>
-#include <string.h>
-#include <byteswap.h>
-#include <errno.h>
-#include <gpxe/if_ether.h>
-#include <gpxe/iobuf.h>
-#include <gpxe/ndp.h>
-#include <gpxe/icmp6.h>
-#include <gpxe/ip6.h>
-#include <gpxe/netdevice.h>
-
-/** @file
- *
- * Neighbour Discovery Protocol
- *
- * This file implements address resolution as specified by the neighbour
- * discovery protocol in RFC2461. This protocol is part of the IPv6 protocol
- * family.
- */
-
-/* A neighbour entry */
-struct ndp_entry {
-	/** Target IP6 address */
-	struct in6_addr in6;
-	/** Link layer protocol */
-	struct ll_protocol *ll_protocol;
-	/** Link-layer address */
-	uint8_t ll_addr[MAX_LL_ADDR_LEN];
-	/** State of the neighbour entry */
-	int state;
-};
-
-/** Number of entries in the neighbour cache table */
-#define NUM_NDP_ENTRIES 4
-
-/** The neighbour cache table */
-static struct ndp_entry ndp_table[NUM_NDP_ENTRIES];
-#define ndp_table_end &ndp_table[NUM_NDP_ENTRIES]
-
-static unsigned int next_new_ndp_entry = 0;
-
-/**
- * Find entry in the neighbour cache
- *
- * @v in6	IP6 address
- */
-static struct ndp_entry *
-ndp_find_entry ( struct in6_addr *in6 ) {
-	struct ndp_entry *ndp;
-
-	for ( ndp = ndp_table ; ndp < ndp_table_end ; ndp++ ) {
-		if ( IP6_EQUAL ( ( *in6 ), ndp->in6 ) && 
-		     ( ndp->state != NDP_STATE_INVALID ) ) {
-			return ndp;
-		}
-	}
-	return NULL;
-}
-
-/**
- * Add NDP entry
- * 
- * @v netdev	Network device
- * @v in6	IP6 address
- * @v ll_addr	Link-layer address
- * @v state	State of the entry - one of the NDP_STATE_XXX values
- */
-static void 
-add_ndp_entry ( struct net_device *netdev, struct in6_addr *in6,
-		void *ll_addr, int state ) {
-	struct ndp_entry *ndp;
-	ndp = &ndp_table[next_new_ndp_entry++ % NUM_NDP_ENTRIES];
-
-	/* Fill up entry */
-	ndp->ll_protocol = netdev->ll_protocol;
-	memcpy ( &ndp->in6, &( *in6 ), sizeof ( *in6 ) );
-	if ( ll_addr ) {
-		memcpy ( ndp->ll_addr, ll_addr, netdev->ll_protocol->ll_addr_len );
-	} else {
-		memset ( ndp->ll_addr, 0, netdev->ll_protocol->ll_addr_len );
-	}
-	ndp->state = state;
-	DBG ( "New neighbour cache entry: IP6 %s => %s %s\n",
-	      inet6_ntoa ( ndp->in6 ), netdev->ll_protocol->name,
-	      netdev->ll_protocol->ntoa ( ndp->ll_addr ) );
-}
-
-/**
- * Resolve the link-layer address
- *
- * @v netdev		Network device
- * @v dest		Destination address
- * @v src		Source address
- * @ret dest_ll_addr	Destination link-layer address or NULL
- * @ret rc		Status
- *
- * This function looks up the neighbour cache for an entry corresponding to the
- * destination address. If it finds a valid entry, it fills up dest_ll_addr and
- * returns 0. Otherwise it sends a neighbour solicitation to the solicited
- * multicast address.
- */
-int ndp_resolve ( struct net_device *netdev, struct in6_addr *dest,
-		  struct in6_addr *src, void *dest_ll_addr ) {
-	struct ll_protocol *ll_protocol = netdev->ll_protocol;
-	struct ndp_entry *ndp;
-	int rc;
-
-	ndp = ndp_find_entry ( dest );
-	/* Check if the entry is valid */
-	if ( ndp && ndp->state == NDP_STATE_REACHABLE ) {
-		DBG ( "Neighbour cache hit: IP6 %s => %s %s\n",
-		      inet6_ntoa ( *dest ), ll_protocol->name,
-		      ll_protocol->ntoa ( ndp->ll_addr ) );
-		memcpy ( dest_ll_addr, ndp->ll_addr, ll_protocol->ll_addr_len );
-		return 0;
-	}
-
-	/* Check if the entry was already created */
-	if ( ndp ) {
-		DBG ( "Awaiting neighbour advertisement\n" );
-		/* For test */
-//		ndp->state = NDP_STATE_REACHABLE;
-//		memcpy ( ndp->ll_addr, netdev->ll_addr, 6 );
-//		assert ( ndp->ll_protocol->ll_addr_len == 6 );
-//		icmp6_test_nadvert ( netdev, dest, ndp->ll_addr );
-//		assert ( ndp->state == NDP_STATE_REACHABLE );
-		/* Take it out till here */
-		return -ENOENT;
-	}
-	DBG ( "Neighbour cache miss: IP6 %s\n", inet6_ntoa ( *dest ) );
-
-	/* Add entry in the neighbour cache */
-	add_ndp_entry ( netdev, dest, NULL, NDP_STATE_INCOMPLETE );
-
-	/* Send neighbour solicitation */
-	if ( ( rc = icmp6_send_solicit ( netdev, src, dest ) ) != 0 ) {
-		return rc;
-	}
-	return -ENOENT;
-}
-
-/**
- * Process neighbour advertisement
- *
- * @v iobuf	I/O buffer
- * @v st_src	Source address
- * @v st_dest	Destination address 
- */
-int ndp_process_advert ( struct io_buffer *iobuf, struct sockaddr_tcpip *st_src __unused,
-			   struct sockaddr_tcpip *st_dest __unused ) {
-	struct neighbour_advert *nadvert = iobuf->data;
-	struct ndp_entry *ndp;
-
-	/* Sanity check */
-	if ( iob_len ( iobuf ) < sizeof ( *nadvert ) ) {
-		DBG ( "Packet too short (%zd bytes)\n", iob_len ( iobuf ) );
-		return -EINVAL;
-	}
-
-	assert ( nadvert->code == 0 );
-	assert ( nadvert->flags & ICMP6_FLAGS_SOLICITED );
-	assert ( nadvert->opt_type == 2 );
-
-	/* Update the neighbour cache, if entry is present */
-	ndp = ndp_find_entry ( &nadvert->target );
-	if ( ndp ) {
-
-	assert ( nadvert->opt_len ==
-			( ( 2 + ndp->ll_protocol->ll_addr_len ) / 8 ) );
-
-		if ( IP6_EQUAL ( ndp->in6, nadvert->target ) ) {
-			memcpy ( ndp->ll_addr, nadvert->opt_ll_addr,
-				 ndp->ll_protocol->ll_addr_len );
-			ndp->state = NDP_STATE_REACHABLE;
-			return 0;
-		}
-	}
-	DBG ( "Unsolicited advertisement (dropping packet)\n" );
-	return 0;
-}