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netdev-linux: Report netdev change events when mac changed.

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When mac addr of ports on bridge has been changed, for example,

$ ip link set dev eth0 address 00:11:22:33:44:55

we should reconfigure the datapath id and mac addr of local port.
But now openvswitch dont do that as expected.

A simple example of how to reproduce it:

$ ovs-vsctl add-br br0
$ ifconfig br0 			# for example, mac is c6:c6:d7:46:b4:4b
$ ip link set dev br0 address 00:11:22:33:44:55
$ ifconfig br0 			# mac of br0 will be 00:11:22:33:44:55

then repeat:
$ ip link set dev br0 address 00:11:22:33:44:55
$ ifconfig br0 			# mac of br0 will be c6:c6:d7:46:b4:4b

This patch reports the mac changed event when ports changed, then
openvswitch will reconfigure the datapath id and mac addr of local
port.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
This commit is contained in:
Tonghao Zhang
2018-02-04 06:45:38 -08:00
committed by Ben Pfaff
parent 8e8b56d098
commit e8e1a40974
5 changed files with 15 additions and 3 deletions
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3
lib/netdev-linux.c
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@@ -747,6 +747,9 @@ netdev_linux_update(struct netdev_linux *dev,
dev->etheraddr = change->mac;
dev->cache_valid |= VALID_ETHERADDR;
dev->ether_addr_error = 0;
/* The mac addr has been changed, report it now. */
rtnetlink_report_link();
}
dev->ifindex = change->if_index;