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Annotation of qemu/roms/ipxe/src/net/rarp.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (C) 2007 Michael Brown <[email protected]>.
        !             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., 675 Mass Ave, Cambridge, MA 02139, USA.
        !            17:  */
        !            18: 
        !            19: FILE_LICENCE ( GPL2_OR_LATER );
        !            20: 
        !            21: #include <stdint.h>
        !            22: #include <byteswap.h>
        !            23: #include <ipxe/netdevice.h>
        !            24: #include <ipxe/iobuf.h>
        !            25: #include <ipxe/if_ether.h>
        !            26: #include <ipxe/rarp.h>
        !            27: 
        !            28: /** @file
        !            29:  *
        !            30:  * Reverse Address Resolution Protocol
        !            31:  *
        !            32:  */
        !            33: 
        !            34: /**
        !            35:  * Process incoming ARP packets
        !            36:  *
        !            37:  * @v iobuf            I/O buffer
        !            38:  * @v netdev           Network device
        !            39:  * @v ll_dest          Link-layer destination address
        !            40:  * @v ll_source                Link-layer source address
        !            41:  * @ret rc             Return status code
        !            42:  *
        !            43:  * This is a dummy method which simply discards RARP packets.
        !            44:  */
        !            45: static int rarp_rx ( struct io_buffer *iobuf,
        !            46:                     struct net_device *netdev __unused,
        !            47:                     const void *ll_dest __unused,
        !            48:                     const void *ll_source __unused ) {
        !            49:        free_iob ( iobuf );
        !            50:        return 0;
        !            51: }
        !            52: 
        !            53: 
        !            54: /**
        !            55:  * Transcribe RARP address
        !            56:  *
        !            57:  * @v net_addr RARP address
        !            58:  * @ret string "<RARP>"
        !            59:  *
        !            60:  * This operation is meaningless for the RARP protocol.
        !            61:  */
        !            62: static const char * rarp_ntoa ( const void *net_addr __unused ) {
        !            63:        return "<RARP>";
        !            64: }
        !            65: 
        !            66: /** RARP protocol */
        !            67: struct net_protocol rarp_protocol __net_protocol = {
        !            68:        .name = "RARP",
        !            69:        .net_proto = htons ( ETH_P_RARP ),
        !            70:        .rx = rarp_rx,
        !            71:        .ntoa = rarp_ntoa,
        !            72: };

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