Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / net / eapol.c

diff --git a/qemu/roms/ipxe/src/net/eapol.c b/qemu/roms/ipxe/src/net/eapol.c
new file mode 100644 (file)
index 0000000..eb03629
--- /dev/null
+++ b/qemu/roms/ipxe/src/net/eapol.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2009 Joshua Oreman <oremanj@rwcr.net>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** @file
+ *
+ * 802.1X Extensible Authentication Protocol over LANs demultiplexer
+ *
+ */
+
+#include <ipxe/netdevice.h>
+#include <ipxe/iobuf.h>
+#include <ipxe/if_ether.h>
+#include <ipxe/eapol.h>
+#include <errno.h>
+#include <byteswap.h>
+
+/**
+ * Receive EAPOL network-layer packet
+ *
+ * @v iob      I/O buffer
+ * @v netdev   Network device
+ * @v ll_dest  Link-layer destination address
+ * @v ll_source        Link-layer source address
+ * @v flags    Packet flags
+ *
+ * This function takes ownership of the I/O buffer passed to it.
+ */
+static int eapol_rx ( struct io_buffer *iob, struct net_device *netdev,
+                     const void *ll_dest, const void *ll_source,
+                     unsigned int flags __unused ) {
+       struct eapol_frame *eapol = iob->data;
+       struct eapol_handler *handler;
+
+       if ( iob_len ( iob ) < EAPOL_HDR_LEN ) {
+               free_iob ( iob );
+               return -EINVAL;
+       }
+
+       for_each_table_entry ( handler, EAPOL_HANDLERS ) {
+               if ( handler->type == eapol->type ) {
+                       iob_pull ( iob, EAPOL_HDR_LEN );
+                       return handler->rx ( iob, netdev, ll_dest, ll_source );
+               }
+       }
+
+       free_iob ( iob );
+       return -( ENOTSUP | ( ( eapol->type & 0x1f ) << 8 ) );
+}
+
+/**
+ * Transcribe EAPOL network-layer address
+ *
+ * @v net_addr Network-layer address
+ * @ret str    String representation of network-layer address
+ *
+ * EAPOL doesn't have network-layer addresses, so we just return the
+ * string @c "<EAPOL>".
+ */
+static const char * eapol_ntoa ( const void *net_addr __unused )
+{
+       return "<EAPOL>";
+}
+
+/** EAPOL network protocol */
+struct net_protocol eapol_protocol __net_protocol = {
+       .name = "EAPOL",
+       .rx = eapol_rx,
+       .ntoa = eapol_ntoa,
+       .net_proto = htons ( ETH_P_EAPOL ),
+};