mirror of
https://github.com/openvswitch/ovs
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ea83a2fcd0
This commit parses rtnetlink address notifications from the kernel in order to display the egress interface of tunnels in the database. Bug #4103.
59 lines
2.3 KiB
C
59 lines
2.3 KiB
C
/*
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* Copyright (c) 2009 Nicira Networks.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef RTNETLINK_LINK_H
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#define RTNETLINK_LINK_H 1
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#include <stdbool.h>
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struct ofpbuf;
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struct rtnetlink_notifier;
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/* These functions are Linux specific, so they should be used directly only by
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* Linux-specific code. */
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/* A digested version of an rtnetlink_link message sent down by the kernel to
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* indicate that a network device has been created, destroyed or changed. */
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struct rtnetlink_link_change {
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/* Copied from struct nlmsghdr. */
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int nlmsg_type; /* e.g. RTM_NEWLINK, RTM_DELLINK. */
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/* Copied from struct ifinfomsg. */
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int ifi_index; /* Index of network device. */
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/* Extracted from Netlink attributes. */
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const char *ifname; /* Name of network device. */
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int master_ifindex; /* Ifindex of datapath master (0 if none). */
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};
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/* Function called to report that a netdev has changed. 'change' describes the
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* specific change. It may be null if the buffer of change information
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* overflowed, in which case the function must assume that every device may
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* have changed. 'aux' is as specified in the call to
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* rtnetlink_link_notifier_register(). */
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typedef
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void rtnetlink_link_notify_func(const struct rtnetlink_link_change *change,
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void *aux);
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bool rtnetlink_link_parse(struct ofpbuf *buf,
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struct rtnetlink_link_change *change);
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int rtnetlink_link_notifier_register(struct rtnetlink_notifier *,
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rtnetlink_link_notify_func *, void *aux);
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void rtnetlink_link_notifier_unregister(struct rtnetlink_notifier *);
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void rtnetlink_link_notifier_run(void);
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void rtnetlink_link_notifier_wait(void);
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#endif /* rtnetlink-link.h */
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