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Shrink and reorder the options table.

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This commit is contained in:
Nicholas J. Kain 2011-07-25 03:28:04 -04:00
parent 2cb0b9227d
commit 544a837944
1 changed files with 21 additions and 25 deletions
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46
ndhc/options.c
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@ -35,9 +35,9 @@
#include "ifch_proto.h"
struct dhcp_option {
char name[10];
enum option_type type;
uint8_t code;
uint8_t type;
char name[10];
};
#define DCODE_PADDING 0x00
@ -48,30 +48,26 @@ struct dhcp_option {
// Marks an option that can be sent as a list of multiple items.
#define OPTION_LIST 32
// This structure is mostly used here and for finding the correct strings
// to describe option commands when sending to ifchd. The type is the more
// useful part and helps for safety checks and determining what options to
// send in the initial DHCP option request packet.
static const struct dhcp_option options[] = {
// name[10] type code
{CMD_SUBNET , OPTION_IP | OPTION_LIST | OPTION_REQ, DCODE_SUBNET},
{CMD_TIMEZONE , OPTION_S32, DCODE_TIMEZONE},
{CMD_ROUTER , OPTION_IP | OPTION_REQ, DCODE_ROUTER},
{CMD_TIMESVR , OPTION_IP | OPTION_LIST, DCODE_TIMESVR},
{CMD_DNS , OPTION_IP | OPTION_LIST | OPTION_REQ, DCODE_DNS},
{CMD_LPRSVR , OPTION_IP | OPTION_LIST, DCODE_LPRSVR},
{CMD_HOSTNAME , OPTION_STRING | OPTION_REQ, DCODE_HOSTNAME},
{CMD_DOMAIN , OPTION_STRING | OPTION_REQ, DCODE_DOMAIN},
{CMD_IPTTL , OPTION_U8, DCODE_IPTTL},
{CMD_MTU , OPTION_U16, DCODE_MTU},
{CMD_BROADCAST, OPTION_IP | OPTION_REQ, DCODE_BROADCAST},
{CMD_NTPSVR , OPTION_IP | OPTION_LIST, DCODE_NTPSVR},
{CMD_WINS , OPTION_IP | OPTION_LIST, DCODE_WINS},
// Past this point, these options are not useful for client configuration
// and contain DHCP protocol metadata. Perhaps they can be removed.
{"requestip", OPTION_IP, 0x32},
{"lease" , OPTION_U32, 0x33},
{"dhcptype" , OPTION_U8, 0x35},
{"serverid" , OPTION_IP, 0x36},
{"message" , OPTION_STRING, 0x38},
{"maxsize" , OPTION_U16, 0x39},
{"0XX0" , OPTION_NONE, 0x00}
// code type name
{DCODE_SUBNET , OPTION_IP | OPTION_LIST | OPTION_REQ, CMD_SUBNET },
{DCODE_TIMEZONE , OPTION_S32, CMD_TIMEZONE },
{DCODE_ROUTER , OPTION_IP | OPTION_REQ, CMD_ROUTER },
{DCODE_TIMESVR , OPTION_IP | OPTION_LIST, CMD_TIMESVR },
{DCODE_DNS , OPTION_IP | OPTION_LIST | OPTION_REQ, CMD_DNS },
{DCODE_LPRSVR , OPTION_IP | OPTION_LIST, CMD_LPRSVR },
{DCODE_HOSTNAME , OPTION_STRING | OPTION_REQ, CMD_HOSTNAME },
{DCODE_DOMAIN , OPTION_STRING | OPTION_REQ, CMD_DOMAIN },
{DCODE_IPTTL , OPTION_U8, CMD_IPTTL },
{DCODE_MTU , OPTION_U16, CMD_MTU },
{DCODE_BROADCAST, OPTION_IP | OPTION_REQ, CMD_BROADCAST},
{DCODE_NTPSVR , OPTION_IP | OPTION_LIST, CMD_NTPSVR },
{DCODE_WINS , OPTION_IP | OPTION_LIST, CMD_WINS },
{0x00 , OPTION_NONE, "NULL" }
};
enum option_type option_type(uint8_t code)