+Mark
On Fri, Feb 24, 2023 at 11:14:47AM +0000, huangjunxian (C) wrote:
> Hi folks!
>
> We've been working on LAG in hns RoCE driver, and we notice that when a FAILOVER event
> occurs in active-backup mode, all GIDs of the RDMA bond device are deleted and new GIDs
> are added, triggered by the event handler listed below.
>
> So, when a FAILOVER event occurs on a RDMA bond device with running traffic, does it make
> sense that the traffic is terminated since its GIDs are deleted?
>
> The FAILOVER event handler mentioned above:
> static int netdevice_event(struct notifier_block *this, unsigned long event, void *ptr)
> {
> ......
> static const struct netdev_event_work_cmd bonding_event_ips_del_cmd = {
> .cb = del_netdev_upper_ips, .filter = upper_device_filter};
> ......
> switch (event) {
> ......
> case NETDEV_BONDING_FAILOVER:
> cmds[0] = bonding_event_ips_del_cmd;
> /* Add default GIDs of the bond device */
> cmds[1] = bonding_default_add_cmd;
> /* Add IP based GIDs of the bond device */
> cmds[2] = add_cmd_upper_ips;
> break;
> ......
> }
> ......
> }
>
> Thanks,
> Junxian
