ipv6: initial dhcpv6 support

1 files changed, 175 insertions, 0 deletions

diff --git a/accel-pppd/ipv6/dhcpv6.h b/accel-pppd/ipv6/dhcpv6.h
new file mode 100644
index 0000000..6c5d164
--- /dev/null
+++ b/accel-pppd/ipv6/dhcpv6.h
@@ -0,0 +1,175 @@
+#ifndef __DHCPV6_H
+#define __DHCPV6_H
+
+#include <stdint.h>
+#include <netinet/in.h>
+
+#include "list.h"
+
+#define __packed __attribute__((packed))
+
+#define DHCPV6_CLIENT_PORT 546
+#define DHCPV6_SERV_PORT 547
+
+#define D6_OPTION_CLIENTID         1
+#define D6_OPTION_SERVERID         2
+#define D6_OPTION_IA_NA            3
+#define D6_OPTION_IA_TA            4
+#define D6_OPTION_IAADDR           5
+#define D6_OPTION_ORO              6
+#define D6_OPTION_PREFERENCE       7
+#define D6_OPTION_ELAPSED_TIME     8
+#define D6_OPTION_RELAY_MSG        9
+#define D6_OPTION_AUTH            11
+#define D6_OPTION_UNICAST         12
+#define D6_OPTION_STATUS_CODE     13
+#define D6_OPTION_RAPID_COMMIT    14
+#define D6_OPTION_USER_CLASS      15
+#define D6_OPTION_VENDOR_CLASS    16
+#define D6_OPTION_VENDOR_SPECIFIC 17
+#define D6_OPTION_INTERFACE_ID    18
+#define D6_OPTION_RECONF_MSG      19
+#define D6_OPTION_RECONF_ACCEPT   20
+#define D6_OPTION_DNS_SERVERS     23
+#define D6_OPTION_DOMAIN_LIST     24
+
+#define D6_SOLICIT                 1
+#define D6_ADVERTISE               2
+#define D6_REQUEST                 3
+#define D6_CONFIRM                 4
+#define D6_RENEW                   5
+#define D6_REBIND                  6
+#define D6_REPLY                   7
+#define D6_RELEASE                 8
+#define D6_DECLINE                 9
+#define D6_RECONFIGURE            10
+#define D6_INFORMATION_REQUEST    11
+#define D6_RELAY_FORM             12
+#define D6_RELAY_REPL             13
+
+#define D6_STATUS_Success          0
+#define D6_STATUS_UnspecFail       1
+#define D6_STATUS_NoAddrsAvail     2
+#define D6_STATUS_NoBinding        3
+#define D6_STATUS_NotOnLink        4
+#define D6_STATUS_UseMulticast     5
+
+#define DUID_LLT 1
+#define DUID_EN  2
+#define DUID_LL  3
+
+struct dhcpv6_opt_hdr
+{
+	uint16_t code;
+	uint16_t len;
+	uint8_t data[0];
+} __packed;
+
+struct dhcpv6_msg_hdr
+{
+	uint32_t type:8;
+	uint32_t trans_id:24;
+	uint8_t data[0];
+} __packed;
+
+struct dhcpv6_duid
+{
+	uint16_t type;
+	union {
+		struct {
+			uint16_t htype;
+			uint32_t time;
+			uint8_t addr[0];
+		} __packed llt;
+		struct {
+			uint32_t enterprise;
+			uint8_t id[0];
+		} en;
+		struct {
+			uint16_t htype;
+			uint8_t addr[0];
+		} ll;
+		uint8_t raw[0];
+	} u;
+} __packed;
+
+struct dhcpv6_opt_clientid
+{
+	struct dhcpv6_opt_hdr hdr;
+	struct dhcpv6_duid duid;
+} __packed;
+
+struct dhcpv6_opt_serverid
+{
+	struct dhcpv6_opt_hdr hdr;
+	struct dhcpv6_duid duid;
+} __packed;
+
+struct dhcpv6_opt_ia_na
+{
+	struct dhcpv6_opt_hdr hdr;
+	uint32_t iaid;
+	uint32_t T1;
+	uint32_t T2;
+} __packed;
+
+struct dhcpv6_opt_ia_ta
+{
+	struct dhcpv6_opt_hdr hdr;
+	uint32_t iaid;
+} __packed;
+
+
+struct dhcpv6_opt_ia_addr
+{
+	struct dhcpv6_opt_hdr hdr;
+	struct in6_addr addr;
+	uint32_t pref_lifetime;
+	uint32_t valid_lifetime;
+} __packed;
+
+struct dhcpv6_opt_oro
+{
+	struct dhcpv6_opt_hdr hdr;
+	uint16_t opt[0];
+} __packed;
+
+struct dhcpv6_opt_status
+{
+	struct dhcpv6_opt_hdr hdr;
+	uint16_t code;
+	char msg[0];
+} __packed;
+
+
+struct dhcpv6_option
+{
+	struct list_head entry;
+
+	struct dhcpv6_opt_hdr *hdr;
+
+	struct dhcpv6_option *parent;
+	struct list_head opt_list;
+};
+
+struct ppp_t;
+struct dhcpv6_packet
+{
+	struct ppp_t *ppp;
+	
+	struct dhcpv6_msg_hdr *hdr;
+	struct dhcpv6_opt_clientid *clientid;
+	struct dhcpv6_opt_serverid *serverid;
+
+	struct list_head opt_list;
+	void *endptr;
+};
+
+struct dhcpv6_packet *dhcpv6_packet_parse(const void *buf, size_t size);
+void dhcpv6_packet_free(struct dhcpv6_packet *pkt);
+void dhcpv6_packet_print(struct dhcpv6_packet *pkt, void (*print)(const char *fmt, ...));
+struct dhcpv6_packet *dhcpv6_packet_alloc_reply(struct dhcpv6_packet *req, int type);
+struct dhcpv6_option *dhcpv6_option_alloc(struct dhcpv6_packet *pkt, int code, int len);
+struct dhcpv6_option *dhcpv6_nested_option_alloc(struct dhcpv6_packet *pkt, struct dhcpv6_option *opt, int code, int len);
+
+#endif