initial ipoe implementation

1 files changed, 118 insertions, 0 deletions

diff --git a/accel-pppd/libnetlink/libnetlink.h b/accel-pppd/libnetlink/libnetlink.h
new file mode 100644
index 00000000..f68bf8a1
--- /dev/null
+++ b/accel-pppd/libnetlink/libnetlink.h
@@ -0,0 +1,118 @@
+#ifndef __LIBNETLINK_H__
+#define __LIBNETLINK_H__ 1
+
+#include <asm/types.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/if_link.h>
+#include <linux/if_addr.h>
+#include <linux/neighbour.h>
+
+#define TCA_BUF_MAX 64*1024
+#define MAX_MSG 16384
+
+struct rtnl_handle
+{
+	int			fd;
+	struct sockaddr_nl	local;
+	struct sockaddr_nl	peer;
+	__u32			seq;
+	__u32			dump;
+};
+
+extern int rcvbuf;
+
+extern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions);
+extern int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, int protocol);
+extern void rtnl_close(struct rtnl_handle *rth);
+extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type);
+extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len);
+
+typedef int (*rtnl_filter_t)(const struct sockaddr_nl *,
+			     struct nlmsghdr *n, void *);
+
+struct rtnl_dump_filter_arg
+{
+	rtnl_filter_t filter;
+	void *arg1;
+	rtnl_filter_t junk;
+	void *arg2;
+};
+
+extern int rtnl_dump_filter_l(struct rtnl_handle *rth,
+			      const struct rtnl_dump_filter_arg *arg);
+extern int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter,
+			    void *arg1,
+			    rtnl_filter_t junk,
+			    void *arg2);
+
+extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
+		     unsigned groups, struct nlmsghdr *answer,
+		     rtnl_filter_t junk,
+		     void *jarg, int ignore_einval);
+extern int rtnl_send(struct rtnl_handle *rth, const char *buf, int);
+extern int rtnl_send_check(struct rtnl_handle *rth, const char *buf, int);
+
+extern int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
+extern int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen);
+extern int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len);
+extern struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type);
+extern int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest);
+extern struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type, const void *data, int len);
+extern int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest);
+extern int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data);
+extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, const void *data, int alen);
+
+extern int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len);
+extern int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len);
+extern int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len);
+
+#define parse_rtattr_nested(tb, max, rta) \
+	(parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
+
+#define parse_rtattr_nested_compat(tb, max, rta, data, len) \
+({	data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \
+	__parse_rtattr_nested_compat(tb, max, rta, len); })
+
+extern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler,
+		       void *jarg);
+extern int rtnl_from_file(FILE *, rtnl_filter_t handler,
+		       void *jarg);
+
+#define NLMSG_TAIL(nmsg) \
+	((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
+
+#ifndef IFA_RTA
+#define IFA_RTA(r) \
+	((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
+#endif
+#ifndef IFA_PAYLOAD
+#define IFA_PAYLOAD(n)	NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
+#endif
+
+#ifndef IFLA_RTA
+#define IFLA_RTA(r) \
+	((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg))))
+#endif
+#ifndef IFLA_PAYLOAD
+#define IFLA_PAYLOAD(n)	NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg))
+#endif
+
+#ifndef NDA_RTA
+#define NDA_RTA(r) \
+	((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
+#endif
+#ifndef NDA_PAYLOAD
+#define NDA_PAYLOAD(n)	NLMSG_PAYLOAD(n,sizeof(struct ndmsg))
+#endif
+
+#ifndef NDTA_RTA
+#define NDTA_RTA(r) \
+	((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg))))
+#endif
+#ifndef NDTA_PAYLOAD
+#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg))
+#endif
+
+#endif /* __LIBNETLINK_H__ */
+