Add cast to rta_getattr_str

[lisovros/iproute2_canprio.git] / include / libnetlink.h

diff --git a/include/libnetlink.h b/include/libnetlink.h
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..b85c37787e1906abe99690d76624f2f9dfca13cf 100644 (file)
--- a/include/libnetlink.h
+++ b/include/libnetlink.h
@@ -0,0 +1,134 @@
+#ifndef __LIBNETLINK_H__
+#define __LIBNETLINK_H__ 1
+
+#include <string.h>
+#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>
+
+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;
+};
+
+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 *arg);
+extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
+                    unsigned groups, struct nlmsghdr *answer);
+extern int rtnl_send(struct rtnl_handle *rth, const void *buf, int);
+extern int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int);
+
+extern int addattr(struct nlmsghdr *n, int maxlen, int type);
+extern int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data);
+extern int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data);
+extern int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
+extern int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data);
+extern int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *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); })
+
+static inline __u16 rta_getattr_u16(const struct rtattr *rta)
+{
+       return *(__u16 *)RTA_DATA(rta);
+}
+static inline __u16 rta_getattr_u32(const struct rtattr *rta)
+{
+       return *(__u32 *)RTA_DATA(rta);
+}
+static inline __u64 rta_getattr_u64(const struct rtattr *rta)
+{
+       __u64 tmp;
+       memcpy(&tmp, RTA_DATA(rta), sizeof(__u64));
+       return tmp;
+}
+static inline const char *rta_getattr_str(const struct rtattr *rta)
+{
+       return (const char *)RTA_DATA(rta);
+}
+
+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__ */
+