On Wed, Nov 13, 2013 at 11:22:29PM +0200, Patrik Flykt wrote:
> Create a new directory to host DHCP components.
> ---
> src/dhcp/protocol.h | 93
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 93 insertions(+)
> create mode 100644 src/dhcp/protocol.h
>
> diff --git a/src/dhcp/protocol.h b/src/dhcp/protocol.h
> new file mode 100644
> index 0000000..3fc4baf
> --- /dev/null
> +++ b/src/dhcp/protocol.h
> @@ -0,0 +1,93 @@
> +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
> +
> +#pragma once
> +
> +/***
> + This file is part of systemd.
> +
> + Copyright (C) 2013 Intel Corporation. All rights reserved.
> +
> + systemd is free software; you can redistribute it and/or modify it
> + under the terms of the GNU Lesser General Public License as published by
> + the Free Software Foundation; either version 2.1 of the License, or
> + (at your option) any later version.
> +
> + systemd 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
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public License
> + along with systemd; If not, see <http://www.gnu.org/licenses/>.
> +***/
> +
> +#include <netinet/udp.h>
> +#include <netinet/ip.h>
> +#include <stdint.h>
> +
> +struct DHCPMessage {
> + uint8_t op;
> + uint8_t htype;
> + uint8_t hlen;
> + uint8_t hops;
> + uint32_t xid;
> + uint16_t secs;
> + uint16_t flags;
> + uint32_t ciaddr;
> + uint32_t yiaddr;
> + uint32_t siaddr;
> + uint32_t giaddr;
> + uint8_t chaddr[16];
> + uint8_t sname[64];
> + uint8_t file[128];
> +} __attribute__((packed));
We have _packed_.
> +
> +typedef struct DHCPMessage DHCPMessage;
> +
> +struct DHCPPacket {
> + struct iphdr ip;
> + struct udphdr udp;
> + DHCPMessage dhcp;
> +} __attribute__((packed));
> +
> +typedef struct DHCPPacket DHCPPacket;
> +
> +enum DHCPState {
> + DHCP_STATE_INIT = 0,
> + DHCP_STATE_SELECTING = 1,
> + DHCP_STATE_INIT_REBOOT = 2,
> + DHCP_STATE_REBOOTING = 3,
> + DHCP_STATE_REQUESTING = 4,
> + DHCP_STATE_BOUND = 5,
> + DHCP_STATE_RENEWING = 6,
> + DHCP_STATE_REBINDING = 7,
> +};
> +
> +typedef enum DHCPState DHCPState;
> +
> +#define BOOTREQUEST 1
> +#define BOOTREPLY 2
> +
> +#define DHCP_DISCOVER 1
> +#define DHCP_OFFER 2
> +#define DHCP_REQUEST 3
> +#define DHCP_DECLINE 4
> +#define DHCP_ACK 5
> +#define DHCP_NAK 6
> +#define DHCP_RELEASE 7
> +
> +#define DHCP_OVERLOAD_FILE 1
> +#define DHCP_OVERLOAD_SNAME 2
> +
> +#define DHCP_OPTION_PAD 0
> +#define DHCP_OPTION_SUBNET_MASK 1
> +#define DHCP_OPTION_ROUTER 3
> +#define DHCP_OPTION_DOMAIN_NAME_SERVER 6
> +#define DHCP_OPTION_HOST_NAME 12
> +#define DHCP_OPTION_DOMAIN_NAME 15
> +#define DHCP_OPTION_NTP_SERVER 42
> +#define DHCP_OPTION_REQUESTED_IP_ADDRESS 50
> +#define DHCP_OPTION_OVERLOAD 52
> +#define DHCP_OPTION_MESSAGE_TYPE 53
> +#define DHCP_OPTION_PARAMETER_REQUEST_LIST 55
> +#define DHCP_OPTION_END 255
Zbyszek
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