initial ipoe implementation

1 files changed, 89 insertions, 0 deletions

diff --git a/accel-pppd/ctrl/ipoe/dhcpv4.h b/accel-pppd/ctrl/ipoe/dhcpv4.h
new file mode 100644
index 0000000..52e90a3
--- /dev/null
+++ b/accel-pppd/ctrl/ipoe/dhcpv4.h
@@ -0,0 +1,89 @@
+#ifndef __DHCPV4_H
+#define __DHCPV4_H
+
+#include <stdint.h>
+#include "list.h"
+
+#include "triton.h"
+
+#define __packed __attribute__((packed))
+
+#define DHCP_OP_REQUEST 1
+#define DHCP_OP_REPLY   2
+
+#define DHCPDISCOVER 1
+#define DHCPOFFER    2
+#define DHCPREQUEST  3
+#define DHCPDECLINE  4
+#define DHCPACK      5
+#define DHCPNAK      6
+#define DHCPRELEASE  7
+#define DHCPINFORM   8
+
+struct dhcpv4_hdr
+{
+	uint8_t op;
+	uint8_t htype;
+	uint8_t hlen;
+	uint8_t hops;
+	uint32_t xid;
+	uint16_t sec;
+	uint16_t flags;
+	uint32_t ciaddr;
+	uint32_t yiaddr;
+	uint32_t siaddr;
+	uint32_t giaddr;
+	uint8_t chaddr[16];
+	char sname[64];
+	char file[128];
+	uint8_t magic[4];
+} __packed;
+
+struct dhcpv4_option
+{
+	struct list_head entry;
+	uint8_t type;
+	uint8_t len;
+	uint8_t *data;
+};
+
+struct dhcpv4_packet
+{
+	struct dhcpv4_hdr *hdr;
+	struct list_head options;
+	struct dhcpv4_option *client_id;
+	struct dhcpv4_option *agent_circuit_id;
+	struct dhcpv4_option *agent_remote_id;
+	uint32_t request_ip;
+	uint32_t server_id;
+	int msg_type;
+	uint8_t *ptr;
+	uint8_t data[0];
+};
+
+struct dhcpv4_serv
+{
+	struct triton_context_t *ctx;
+	struct triton_md_handler_t hnd;
+	int raw_sock;
+	uint8_t hwaddr[6];
+	void (*recv)(struct dhcpv4_serv *serv, struct dhcpv4_packet *pack);
+};
+
+struct ap_session;
+
+struct dhcpv4_serv *dhcpv4_create(struct triton_context_t *ctx, const char *ifname);
+void dhcpv4_free(struct dhcpv4_serv *);
+
+
+int dhcpv4_send_reply(int msg_type, struct dhcpv4_serv *serv, struct dhcpv4_packet *req, struct ap_session *ses, int lease_time);
+int dhcpv4_send_nak(struct dhcpv4_serv *serv, struct dhcpv4_packet *req);
+
+void dhcpv4_packet_free(struct dhcpv4_packet *pack);
+
+int dhcpv4_check_options(struct dhcpv4_packet *);
+void dhcpv4_print_options(struct dhcpv4_packet *, void (*)(const char *, ...));
+
+void dhcpv4_print_packet(struct dhcpv4_packet *pack, void (*print)(const char *fmt, ...));
+
+#endif