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linux/drivers/net/bonding
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Hangbin Liu da19a2b967 bonding: reset bond's flags when down link is P2P device 
When adding a point to point downlink to the bond, we neglected to reset
the bond's flags, which were still using flags like BROADCAST and
MULTICAST. Consequently, this would initiate ARP/DAD for P2P downlink
interfaces, such as when adding a GRE device to the bonding.

To address this issue, let's reset the bond's flags for P2P interfaces.

Before fix:
7: gre0@NONE: <POINTOPOINT,NOARP,SLAVE,UP,LOWER_UP> mtu 1500 qdisc noqueue master bond0 state UNKNOWN group default qlen 1000
    link/gre6 2006:70:10::1 peer 2006:70:10::2 permaddr 167f:18:f188::
8: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/gre6 2006:70:10::1 brd 2006:70:10::2
    inet6 fe80::200:ff:fe00:0/64 scope link
       valid_lft forever preferred_lft forever

After fix:
7: gre0@NONE: <POINTOPOINT,NOARP,SLAVE,UP,LOWER_UP> mtu 1500 qdisc noqueue master bond2 state UNKNOWN group default qlen 1000
    link/gre6 2006:70:10::1 peer 2006:70:10::2 permaddr c29e:557a:e9d9::
8: bond0: <POINTOPOINT,NOARP,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/gre6 2006:70:10::1 peer 2006:70:10::2
    inet6 fe80::1/64 scope link
       valid_lft forever preferred_lft forever

Reported-by: Liang Li <liali@redhat.com>
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2221438
Fixes: 872254dd6b ("net/bonding: Enable bonding to enslave non ARPHRD_ETHER")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-07-25 09:16:17 +02:00
..
bond_3ad.c drivers/net/bonding/bond_3ad: return when there's no aggregator 2023-01-03 09:17:12 +00:00
bond_alb.c bonding: fix reference count leak in balance-alb mode 2022-08-11 08:51:05 -07:00
bond_debugfs.c bonding: fix error checking in bond_debug_reregister() 2023-02-03 19:22:20 -08:00
bond_main.c bonding: reset bond's flags when down link is P2P device 2023-07-25 09:16:17 +02:00
bond_netlink.c bonding: fix send_peer_notif overflow 2023-05-10 09:27:20 +01:00
bond_options.c bonding: fix send_peer_notif overflow 2023-05-10 09:27:20 +01:00
bond_procfs.c bonding: show NS IPv6 targets in proc master info 2022-05-31 10:50:02 +02:00
bond_sysfs_slave.c net: bonding: Convert to use sysfs_emit()/sysfs_emit_at() APIs 2022-09-30 12:29:45 +01:00
bond_sysfs.c driver core: class: mark the struct class for sysfs callbacks as constant 2023-03-29 07:54:58 +02:00
bonding_priv.h net: bonding: Add SPDX identifier to remaining files 2023-05-16 15:38:06 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00