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Diffstat (limited to 'networking/udhcp/options.h')
-rw-r--r--networking/udhcp/options.h60
1 files changed, 35 insertions, 25 deletions
diff --git a/networking/udhcp/options.h b/networking/udhcp/options.h
index 75087fa..b7c9d8f 100644
--- a/networking/udhcp/options.h
+++ b/networking/udhcp/options.h
@@ -32,45 +32,55 @@ enum {
/* Do not modify below here unless you know what you are doing!! */
/*****************************************************************/
-/* DHCP protocol -- see RFC 2131 */
+/* DHCP protocol. See RFC 2131 */
#define DHCP_MAGIC 0x63825363
-/* DHCP option codes (partial list) */
+/* DHCP option codes (partial list). See RFC 2132.
+ * Commented out options are handled by common option machinery,
+ * uncommented ones have spacial cases (grep for them to see).
+ */
#define DHCP_PADDING 0x00
#define DHCP_SUBNET 0x01
-#define DHCP_TIME_OFFSET 0x02
-#define DHCP_ROUTER 0x03
-#define DHCP_TIME_SERVER 0x04
-//#define DHCP_NAME_SERVER 0x05 /* _really_ ancient kind of NS */
-#define DHCP_DNS_SERVER 0x06
-#define DHCP_LOG_SERVER 0x07
+//#define DHCP_TIME_OFFSET 0x02 /* (localtime - UTC_time) in seconds. signed */
+//#define DHCP_ROUTER 0x03
+//#define DHCP_TIME_SERVER 0x04 /* RFC 868 time server (32-bit, 0 = 1.1.1900) */
+//#define DHCP_NAME_SERVER 0x05 /* IEN 116 _really_ ancient kind of NS */
+//#define DHCP_DNS_SERVER 0x06
+//#define DHCP_LOG_SERVER 0x07 /* port 704 UDP log (not syslog)
//#define DHCP_COOKIE_SERVER 0x08 /* "quote of the day" server */
-#define DHCP_LPR_SERVER 0x09
+//#define DHCP_LPR_SERVER 0x09
#define DHCP_HOST_NAME 0x0c /* either client informs server or server gives name to client */
-#define DHCP_BOOT_SIZE 0x0d
-#define DHCP_DOMAIN_NAME 0x0f /* server gives domain suffix */
-#define DHCP_SWAP_SERVER 0x10
-#define DHCP_ROOT_PATH 0x11
-#define DHCP_IP_TTL 0x17
-#define DHCP_MTU 0x1a
-#define DHCP_BROADCAST 0x1c
-#define DHCP_NTP_SERVER 0x2a
-#define DHCP_WINS_SERVER 0x2c
+//#define DHCP_BOOT_SIZE 0x0d
+//#define DHCP_DOMAIN_NAME 0x0f /* server gives domain suffix */
+//#define DHCP_SWAP_SERVER 0x10
+//#define DHCP_ROOT_PATH 0x11
+//#define DHCP_IP_TTL 0x17
+//#define DHCP_MTU 0x1a
+//#define DHCP_BROADCAST 0x1c
+//#define DHCP_NIS_DOMAIN 0x28
+//#define DHCP_NIS_SERVER 0x29
+//#define DHCP_NTP_SERVER 0x2a
+//#define DHCP_WINS_SERVER 0x2c
#define DHCP_REQUESTED_IP 0x32 /* sent by client if specific IP is wanted */
#define DHCP_LEASE_TIME 0x33
#define DHCP_OPTION_OVERLOAD 0x34
#define DHCP_MESSAGE_TYPE 0x35
#define DHCP_SERVER_ID 0x36 /* by default server's IP */
#define DHCP_PARAM_REQ 0x37 /* list of options client wants */
-#define DHCP_MESSAGE 0x38 /* error message when sending NAK etc */
+//#define DHCP_ERR_MESSAGE 0x38 /* error message when sending NAK etc */
#define DHCP_MAX_SIZE 0x39
-//#define DHCP_T1 0x3a
-//#define DHCP_T2 0x3b
#define DHCP_VENDOR 0x3c /* client's vendor (a string) */
#define DHCP_CLIENT_ID 0x3d /* by default client's MAC addr, but may be arbitrarily long */
+//#define DHCP_TFTP_SERVER_NAME 0x42 /* same as 'sname' field */
+//#define DHCP_BOOT_FILE 0x43 /* same as 'file' field */
+//#define DHCP_USER_CLASS 0x4d /* RFC 3004. set of LASCII strings. "I am a printer" etc */
#define DHCP_FQDN 0x51 /* client asks to update DNS to map its FQDN to its new IP */
-#define DHCP_STATIC_ROUTES 0x79
-#define DHCP_END 0xFF
+//#define DHCP_DOMAIN_SEARCH 0x77 /* RFC 3397. set of ASCIZ string, DNS-style compressed */
+//#define DHCP_STATIC_ROUTES 0x79 /* RFC 3442. (mask,ip,router) tuples */
+//#define DHCP_WPAD 0xfc /* MSIE's Web Proxy Autodiscovery Protocol */
+#define DHCP_END 0xff
+
+
/* Offsets in option byte sequence */
#define OPT_CODE 0
#define OPT_LEN 1
@@ -106,8 +116,8 @@ extern const uint8_t dhcp_option_lengths[];
uint8_t *get_option(struct dhcp_packet *packet, int code) FAST_FUNC;
int end_option(uint8_t *optionptr) FAST_FUNC;
-int add_option_string(uint8_t *optionptr, uint8_t *string) FAST_FUNC;
-int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data) FAST_FUNC;
+void add_option_string(uint8_t *optionptr, uint8_t *string) FAST_FUNC;
+void add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data) FAST_FUNC;
#if ENABLE_FEATURE_UDHCP_RFC3397
char *dname_dec(const uint8_t *cstr, int clen, const char *pre) FAST_FUNC;
uint8_t *dname_enc(const uint8_t *cstr, int clen, const char *src, int *retlen) FAST_FUNC;