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lib: Show tunnel egress interface in ovsdb

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This commit parses rtnetlink address notifications from the
kernel in order to display the egress interface of tunnels in the
database.

Bug #4103.
This commit is contained in:
Ethan Jackson
2010-12-21 16:26:21 -08:00
parent 21d6e22eee
commit ea83a2fcd0
14 changed files with 566 additions and 13 deletions
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11
lib/netdev-provider.h
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@@ -518,6 +518,17 @@ struct netdev_class {
int (*get_next_hop)(const struct in_addr *host, struct in_addr *next_hop,
char **netdev_name);
/* Looks up the name of the interface out of which traffic will egress if
* 'netdev' is a tunnel. If unsuccessful, or 'netdev' is not a tunnel,
* will return null. This function does not necessarily return the
* physical interface out which traffic will egress. Instead it returns
* the interface which is assigned 'netdev's remote_ip. This may be an
* internal interface such as a bridge port.
*
* This function may be set to null if 'netdev' is not a tunnel or it is
* not supported. */
const char *(*get_tnl_iface)(const struct netdev *netdev);
/* Looks up the ARP table entry for 'ip' on 'netdev' and stores the
* corresponding MAC address in 'mac'. A return value of ENXIO, in
* particular, indicates that there is no ARP table entry for 'ip' on