+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LIBNETLINK_H__
#define __LIBNETLINK_H__ 1
#include <linux/if_addr.h>
#include <linux/neighbour.h>
#include <linux/netconf.h>
+#include <arpa/inet.h>
-struct rtnl_handle
-{
+struct rtnl_handle {
int fd;
struct sockaddr_nl local;
struct sockaddr_nl peer;
__u32 dump;
int proto;
FILE *dump_fp;
+#define RTNL_HANDLE_F_LISTEN_ALL_NSID 0x01
+#define RTNL_HANDLE_F_SUPPRESS_NLERR 0x02
+ int flags;
+};
+
+struct nlmsg_list {
+ struct nlmsg_list *next;
+ struct nlmsghdr h;
+};
+
+struct nlmsg_chain {
+ struct nlmsg_list *head;
+ struct nlmsg_list *tail;
};
extern int rcvbuf;
-extern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions)
+int rtnl_open(struct rtnl_handle *rth, unsigned int subscriptions)
__attribute__((warn_unused_result));
-extern int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions,
+int rtnl_open_byproto(struct rtnl_handle *rth, unsigned int subscriptions,
int protocol)
__attribute__((warn_unused_result));
-extern void rtnl_close(struct rtnl_handle *rth);
-extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type)
+void rtnl_close(struct rtnl_handle *rth);
+
+typedef int (*req_filter_fn_t)(struct nlmsghdr *nlh, int reqlen);
+
+int rtnl_addrdump_req(struct rtnl_handle *rth, int family)
+ __attribute__((warn_unused_result));
+int rtnl_addrlbldump_req(struct rtnl_handle *rth, int family)
+ __attribute__((warn_unused_result));
+int rtnl_routedump_req(struct rtnl_handle *rth, int family,
+ req_filter_fn_t filter_fn)
+ __attribute__((warn_unused_result));
+int rtnl_ruledump_req(struct rtnl_handle *rth, int family)
+ __attribute__((warn_unused_result));
+int rtnl_neighdump_req(struct rtnl_handle *rth, int family)
+ __attribute__((warn_unused_result));
+int rtnl_neightbldump_req(struct rtnl_handle *rth, int family)
+ __attribute__((warn_unused_result));
+int rtnl_mdbdump_req(struct rtnl_handle *rth, int family)
+ __attribute__((warn_unused_result));
+int rtnl_netconfdump_req(struct rtnl_handle *rth, int family)
+ __attribute__((warn_unused_result));
+int rtnl_nsiddump_req(struct rtnl_handle *rth, int family)
+ __attribute__((warn_unused_result));
+
+int rtnl_linkdump_req(struct rtnl_handle *rth, int fam)
+ __attribute__((warn_unused_result));
+int rtnl_linkdump_req_filter(struct rtnl_handle *rth, int fam, __u32 filt_mask)
+ __attribute__((warn_unused_result));
+
+int rtnl_linkdump_req_filter_fn(struct rtnl_handle *rth, int fam,
+ req_filter_fn_t fn)
__attribute__((warn_unused_result));
-extern int rtnl_wilddump_req_filter(struct rtnl_handle *rth, int fam, int type,
- __u32 filt_mask)
+int rtnl_statsdump_req_filter(struct rtnl_handle *rth, int fam, __u32 filt_mask)
__attribute__((warn_unused_result));
-extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req,
+int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req,
int len)
__attribute__((warn_unused_result));
+int rtnl_dump_request_n(struct rtnl_handle *rth, struct nlmsghdr *n)
+ __attribute__((warn_unused_result));
-typedef int (*rtnl_filter_t)(const struct sockaddr_nl *,
- struct nlmsghdr *n, void *);
+struct rtnl_ctrl_data {
+ int nsid;
+};
-struct rtnl_dump_filter_arg
-{
+typedef int (*rtnl_filter_t)(struct nlmsghdr *n, void *);
+
+typedef int (*rtnl_listen_filter_t)(struct rtnl_ctrl_data *,
+ struct nlmsghdr *n, void *);
+
+typedef int (*nl_ext_ack_fn_t)(const char *errmsg, uint32_t off,
+ const struct nlmsghdr *inner_nlh);
+
+struct rtnl_dump_filter_arg {
rtnl_filter_t filter;
void *arg1;
+ __u16 nc_flags;
};
-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)
+int rtnl_dump_filter_nc(struct rtnl_handle *rth,
+ rtnl_filter_t filter,
+ void *arg, __u16 nc_flags);
+#define rtnl_dump_filter(rth, filter, arg) \
+ rtnl_dump_filter_nc(rth, filter, arg, 0)
+int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n,
+ struct nlmsghdr **answer)
+ __attribute__((warn_unused_result));
+int rtnl_talk_iov(struct rtnl_handle *rtnl, struct iovec *iovec, size_t iovlen,
+ struct nlmsghdr **answer)
__attribute__((warn_unused_result));
-extern int rtnl_send(struct rtnl_handle *rth, const void *buf, int)
+int rtnl_talk_suppress_rtnl_errmsg(struct rtnl_handle *rtnl, struct nlmsghdr *n,
+ struct nlmsghdr **answer)
__attribute__((warn_unused_result));
-extern int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int)
+int rtnl_send(struct rtnl_handle *rth, const void *buf, int)
__attribute__((warn_unused_result));
+int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int)
+ __attribute__((warn_unused_result));
+int nl_dump_ext_ack(const struct nlmsghdr *nlh, nl_ext_ack_fn_t errfn);
-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);
+int addattr(struct nlmsghdr *n, int maxlen, int type);
+int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data);
+int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data);
+int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
+int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data);
+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);
+int addattr_l(struct nlmsghdr *n, int maxlen, int type,
+ const void *data, int alen);
+int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len);
+struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type);
+int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest);
+struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type,
+ const void *data, int len);
+int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest);
+int rta_addattr8(struct rtattr *rta, int maxlen, int type, __u8 data);
+int rta_addattr16(struct rtattr *rta, int maxlen, int type, __u16 data);
+int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data);
+int rta_addattr64(struct rtattr *rta, int maxlen, int type, __u64 data);
+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_flags(struct rtattr *tb[], int max, struct rtattr *rta,
+int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len);
+int parse_rtattr_flags(struct rtattr *tb[], int max, struct rtattr *rta,
int len, unsigned short flags);
-extern int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len);
-extern struct rtattr *parse_rtattr_one(int type, struct rtattr *rta, int len);
-extern int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len);
+struct rtattr *parse_rtattr_one(int type, struct rtattr *rta, int len);
+int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len);
+
+struct rtattr *rta_nest(struct rtattr *rta, int maxlen, int type);
+int rta_nest_end(struct rtattr *rta, struct rtattr *nest);
+
+#define RTA_TAIL(rta) \
+ ((struct rtattr *) (((void *) (rta)) + \
+ RTA_ALIGN((rta)->rta_len)))
#define parse_rtattr_nested(tb, max, rta) \
(parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
{
return *(__u16 *)RTA_DATA(rta);
}
+static inline __be16 rta_getattr_be16(const struct rtattr *rta)
+{
+ return ntohs(rta_getattr_u16(rta));
+}
static inline __u32 rta_getattr_u32(const struct rtattr *rta)
{
return *(__u32 *)RTA_DATA(rta);
}
+static inline __be32 rta_getattr_be32(const struct rtattr *rta)
+{
+ return ntohl(rta_getattr_u32(rta));
+}
static inline __u64 rta_getattr_u64(const struct rtattr *rta)
{
__u64 tmp;
+
memcpy(&tmp, RTA_DATA(rta), sizeof(__u64));
return tmp;
}
+static inline __s32 rta_getattr_s32(const struct rtattr *rta)
+{
+ return *(__s32 *)RTA_DATA(rta);
+}
+static inline __s64 rta_getattr_s64(const struct rtattr *rta)
+{
+ __s64 tmp;
+
+ memcpy(&tmp, RTA_DATA(rta), sizeof(tmp));
+ 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);
+int rtnl_listen_all_nsid(struct rtnl_handle *);
+int rtnl_listen(struct rtnl_handle *, rtnl_listen_filter_t handler,
+ void *jarg);
+int rtnl_from_file(FILE *, rtnl_listen_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))))
+ ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
#endif
#ifndef IFA_PAYLOAD
-#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
+#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))))
+ ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg))))
#endif
#ifndef IFLA_PAYLOAD
-#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg))
+#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))))
+ ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
#endif
#ifndef NDA_PAYLOAD
-#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg))
+#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))))
+ ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg))))
#endif
#ifndef NDTA_PAYLOAD
-#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg))
+#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ndtmsg))
+#endif
+
+#ifndef NETNS_RTA
+#define NETNS_RTA(r) \
+ ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct rtgenmsg))))
+#endif
+#ifndef NETNS_PAYLOAD
+#define NETNS_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct rtgenmsg))
+#endif
+
+#ifndef IFLA_STATS_RTA
+#define IFLA_STATS_RTA(r) \
+ ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct if_stats_msg))))
#endif
/* User defined nlmsg_type which is used mostly for logging netlink
#define NLMSG_TSTAMP 15
#endif /* __LIBNETLINK_H__ */
-
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