1 files changed, 113 insertions, 0 deletions
diff --git a/src/libsystemd/sd-netlink/netlink-util.h b/src/libsystemd/sd-netlink/netlink-util.h
new file mode 100644
index 0000000..369f5d5
--- /dev/null
+++ b/src/libsystemd/sd-netlink/netlink-util.h
@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <linux/rtnetlink.h>
+
+#include "sd-netlink.h"
+
+#include "ether-addr-util.h"
+#include "in-addr-util.h"
+#include "ordered-set.h"
+#include "socket-util.h"
+
+/* See struct rtvia in rtnetlink.h */
+typedef struct RouteVia {
+        uint16_t family;
+        union in_addr_union address;
+} _packed_ RouteVia;
+
+typedef struct MultipathRoute {
+        RouteVia gateway;
+        uint32_t weight;
+        int ifindex;
+        char *ifname;
+} MultipathRoute;
+
+MultipathRoute *multipath_route_free(MultipathRoute *m);
+DEFINE_TRIVIAL_CLEANUP_FUNC(MultipathRoute*, multipath_route_free);
+
+int multipath_route_dup(const MultipathRoute *m, MultipathRoute **ret);
+
+int rtnl_set_link_name(sd_netlink **rtnl, int ifindex, const char *name, char* const* alternative_names);
+static inline int rtnl_append_link_alternative_names(sd_netlink **rtnl, int ifindex, char* const *alternative_names) {
+        return rtnl_set_link_name(rtnl, ifindex, NULL, alternative_names);
+}
+int rtnl_set_link_properties(
+                sd_netlink **rtnl,
+                int ifindex,
+                const char *alias,
+                const struct hw_addr_data *hw_addr,
+                uint32_t txqueues,
+                uint32_t rxqueues,
+                uint32_t txqueuelen,
+                uint32_t mtu,
+                uint32_t gso_max_size,
+                size_t gso_max_segments);
+int rtnl_get_link_alternative_names(sd_netlink **rtnl, int ifindex, char ***ret);
+int rtnl_set_link_alternative_names(sd_netlink **rtnl, int ifindex, char* const *alternative_names);
+int rtnl_set_link_alternative_names_by_ifname(sd_netlink **rtnl, const char *ifname, char* const *alternative_names);
+int rtnl_delete_link_alternative_names(sd_netlink **rtnl, int ifindex, char* const *alternative_names);
+int rtnl_resolve_link_alternative_name(sd_netlink **rtnl, const char *name, char **ret);
+int rtnl_resolve_ifname(sd_netlink **rtnl, const char *name);
+int rtnl_resolve_interface(sd_netlink **rtnl, const char *name);
+int rtnl_resolve_interface_or_warn(sd_netlink **rtnl, const char *name);
+int rtnl_get_link_info(
+                sd_netlink **rtnl,
+                int ifindex,
+                unsigned short *ret_iftype,
+                unsigned *ret_flags,
+                char **ret_kind,
+                struct hw_addr_data *ret_hw_addr,
+                struct hw_addr_data *ret_permanent_hw_addr);
+
+int rtnl_log_parse_error(int r);
+int rtnl_log_create_error(int r);
+
+#define netlink_call_async(nl, ret_slot, message, callback, destroy_callback, userdata) \
+        ({                                                              \
+                int (*_callback_)(sd_netlink *, sd_netlink_message *, typeof(userdata)) = callback; \
+                void (*_destroy_)(typeof(userdata)) = destroy_callback; \
+                sd_netlink_call_async(nl, ret_slot, message,            \
+                                      (sd_netlink_message_handler_t) _callback_, \
+                                      (sd_netlink_destroy_t) _destroy_, \
+                                      userdata, 0, __func__);           \
+        })
+
+#define netlink_add_match(nl, ret_slot, match, callback, destroy_callback, userdata, description) \
+        ({                                                              \
+                int (*_callback_)(sd_netlink *, sd_netlink_message *, typeof(userdata)) = callback; \
+                void (*_destroy_)(typeof(userdata)) = destroy_callback; \
+                sd_netlink_add_match(nl, ret_slot, match,               \
+                                     (sd_netlink_message_handler_t) _callback_, \
+                                     (sd_netlink_destroy_t) _destroy_,  \
+                                     userdata, description);            \
+        })
+
+#define genl_add_match(nl, ret_slot, family, group, cmd, callback, destroy_callback, userdata, description) \
+        ({                                                              \
+                int (*_callback_)(sd_netlink *, sd_netlink_message *, typeof(userdata)) = callback; \
+                void (*_destroy_)(typeof(userdata)) = destroy_callback; \
+                sd_genl_add_match(nl, ret_slot, family, group, cmd,     \
+                                  (sd_netlink_message_handler_t) _callback_, \
+                                  (sd_netlink_destroy_t) _destroy_,     \
+                                  userdata, description);               \
+        })
+
+int netlink_message_append_hw_addr(sd_netlink_message *m, unsigned short type, const struct hw_addr_data *data);
+int netlink_message_append_in_addr_union(sd_netlink_message *m, unsigned short type, int family, const union in_addr_union *data);
+int netlink_message_append_sockaddr_union(sd_netlink_message *m, unsigned short type, const union sockaddr_union *data);
+
+int netlink_message_read_hw_addr(sd_netlink_message *m, unsigned short type, struct hw_addr_data *data);
+int netlink_message_read_in_addr_union(sd_netlink_message *m, unsigned short type, int family, union in_addr_union *data);
+
+void rtattr_append_attribute_internal(struct rtattr *rta, unsigned short type, const void *data, size_t data_length);
+int rtattr_append_attribute(struct rtattr **rta, unsigned short type, const void *data, size_t data_length);
+
+int rtattr_read_nexthop(const struct rtnexthop *rtnh, size_t size, int family, OrderedSet **ret);
+
+void netlink_seal_message(sd_netlink *nl, sd_netlink_message *m);
+
+size_t netlink_get_reply_callback_count(sd_netlink *nl);
+
+/* TODO: to be exported later */
+int sd_netlink_sendv(sd_netlink *nl, sd_netlink_message **messages, size_t msgcnt, uint32_t **ret_serial);