Rename more things to elogind

[elogind.git] / src / libelogind / sd-rtnl / rtnl-internal.h

diff --git a/src/libelogind/sd-rtnl/rtnl-internal.h b/src/libelogind/sd-rtnl/rtnl-internal.h
new file mode 100644 (file)
index 0000000..05b88b1
--- /dev/null
+++ b/src/libelogind/sd-rtnl/rtnl-internal.h
@@ -0,0 +1,135 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Tom Gundersen <teg@jklm.no>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <linux/netlink.h>
+
+#include "refcnt.h"
+#include "prioq.h"
+#include "list.h"
+
+#include "sd-rtnl.h"
+
+#include "rtnl-types.h"
+
+#define RTNL_DEFAULT_TIMEOUT ((usec_t) (25 * USEC_PER_SEC))
+
+#define RTNL_WQUEUE_MAX 1024
+#define RTNL_RQUEUE_MAX 64*1024
+
+#define RTNL_CONTAINER_DEPTH 32
+
+struct reply_callback {
+        sd_rtnl_message_handler_t callback;
+        void *userdata;
+        usec_t timeout;
+        uint64_t serial;
+        unsigned prioq_idx;
+};
+
+struct match_callback {
+        sd_rtnl_message_handler_t callback;
+        uint16_t type;
+        void *userdata;
+
+        LIST_FIELDS(struct match_callback, match_callbacks);
+};
+
+struct sd_rtnl {
+        RefCount n_ref;
+
+        int fd;
+
+        union {
+                struct sockaddr sa;
+                struct sockaddr_nl nl;
+        } sockaddr;
+
+        sd_rtnl_message **rqueue;
+        unsigned rqueue_size;
+        size_t rqueue_allocated;
+
+        sd_rtnl_message **rqueue_partial;
+        unsigned rqueue_partial_size;
+        size_t rqueue_partial_allocated;
+
+        sd_rtnl_message **wqueue;
+        unsigned wqueue_size;
+        size_t wqueue_allocated;
+
+        struct nlmsghdr *rbuffer;
+        size_t rbuffer_allocated;
+
+        bool processing:1;
+
+        uint32_t serial;
+
+        struct Prioq *reply_callbacks_prioq;
+        Hashmap *reply_callbacks;
+
+        LIST_HEAD(struct match_callback, match_callbacks);
+
+        pid_t original_pid;
+
+        sd_event_source *io_event_source;
+        sd_event_source *time_event_source;
+        sd_event_source *exit_event_source;
+        sd_event *event;
+};
+
+struct sd_rtnl_message {
+        RefCount n_ref;
+
+        sd_rtnl *rtnl;
+
+        struct nlmsghdr *hdr;
+        const struct NLTypeSystem *(container_type_system[RTNL_CONTAINER_DEPTH]); /* the type of the container and all its parents */
+        size_t container_offsets[RTNL_CONTAINER_DEPTH]; /* offset from hdr to each container's start */
+        unsigned n_containers; /* number of containers */
+        size_t next_rta_offset; /* offset from hdr to next rta */
+        size_t *rta_offset_tb[RTNL_CONTAINER_DEPTH];
+        unsigned short rta_tb_size[RTNL_CONTAINER_DEPTH];
+        bool sealed:1;
+        bool broadcast:1;
+
+        sd_rtnl_message *next; /* next in a chain of multi-part messages */
+};
+
+int message_new(sd_rtnl *rtnl, sd_rtnl_message **ret, uint16_t type);
+
+int socket_write_message(sd_rtnl *nl, sd_rtnl_message *m);
+int socket_read_message(sd_rtnl *nl);
+
+int rtnl_rqueue_make_room(sd_rtnl *rtnl);
+int rtnl_rqueue_partial_make_room(sd_rtnl *rtnl);
+
+int rtnl_message_read_internal(sd_rtnl_message *m, unsigned short type, void **data);
+int rtnl_message_parse(sd_rtnl_message *m,
+                       size_t **rta_offset_tb,
+                       unsigned short *rta_tb_size,
+                       int max,
+                       struct rtattr *rta,
+                       unsigned int rt_len);
+
+/* Make sure callbacks don't destroy the rtnl connection */
+#define RTNL_DONT_DESTROY(rtnl) \
+        _cleanup_rtnl_unref_ _unused_ sd_rtnl *_dont_destroy_##rtnl = sd_rtnl_ref(rtnl)