[infiniband] Use "%#lx" as format specifier for queue pair numbers
[ipxe.git] / src / net / eapol.c
1 /*
2 * Copyright (c) 2009 Joshua Oreman <oremanj@rwcr.net>.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA.
18 */
19
20 FILE_LICENCE ( GPL2_OR_LATER );
21
22 /** @file
23 *
24 * 802.1X Extensible Authentication Protocol over LANs demultiplexer
25 *
26 */
27
28 #include <ipxe/netdevice.h>
29 #include <ipxe/iobuf.h>
30 #include <ipxe/if_ether.h>
31 #include <ipxe/eapol.h>
32 #include <errno.h>
33 #include <byteswap.h>
34
35 /**
36 * Receive EAPOL network-layer packet
37 *
38 * @v iob I/O buffer
39 * @v netdev Network device
40 * @v ll_dest Link-layer destination address
41 * @v ll_source Link-layer source address
42 * @v flags Packet flags
43 *
44 * This function takes ownership of the I/O buffer passed to it.
45 */
46 static int eapol_rx ( struct io_buffer *iob, struct net_device *netdev,
47 const void *ll_dest, const void *ll_source,
48 unsigned int flags __unused ) {
49 struct eapol_frame *eapol = iob->data;
50 struct eapol_handler *handler;
51
52 if ( iob_len ( iob ) < EAPOL_HDR_LEN ) {
53 free_iob ( iob );
54 return -EINVAL;
55 }
56
57 for_each_table_entry ( handler, EAPOL_HANDLERS ) {
58 if ( handler->type == eapol->type ) {
59 iob_pull ( iob, EAPOL_HDR_LEN );
60 return handler->rx ( iob, netdev, ll_dest, ll_source );
61 }
62 }
63
64 free_iob ( iob );
65 return -( ENOTSUP | ( ( eapol->type & 0x1f ) << 8 ) );
66 }
67
68 /**
69 * Transcribe EAPOL network-layer address
70 *
71 * @v net_addr Network-layer address
72 * @ret str String representation of network-layer address
73 *
74 * EAPOL doesn't have network-layer addresses, so we just return the
75 * string @c "<EAPOL>".
76 */
77 static const char * eapol_ntoa ( const void *net_addr __unused )
78 {
79 return "<EAPOL>";
80 }
81
82 /** EAPOL network protocol */
83 struct net_protocol eapol_protocol __net_protocol = {
84 .name = "EAPOL",
85 .rx = eapol_rx,
86 .ntoa = eapol_ntoa,
87 .net_proto = htons ( ETH_P_EAPOL ),
88 };