On Fri, 13 Dec 2024 12:06:01 -0800 longli@xxxxxxxxxxxxxxxxx wrote: > Other kernel APIs (e.g those in "include/linux/netdevice.h") check for > IFF_MASTER, IFF_SLAVE and IFF_BONDING for determing if those are used > in a master/slave bonded setup. RDMA uses those APIs extensively when > looking for master/slave devices. Netvsc's bonding setup with its slave > device falls into this category. > > Make hv_netvsc properly indicate bonding with its slave and change the > API to reflect this bonding setup. This is severely lacking in terms of safety analysis. > @@ -2204,6 +2204,10 @@ static int netvsc_vf_join(struct net_device *vf_netdev, > goto rx_handler_failed; > } > > + vf_netdev->permanent_bond = 1; > + ndev->permanent_bond = 1; > + ndev->flags |= IFF_MASTER; > @@ -2484,7 +2488,15 @@ static int netvsc_unregister_vf(struct net_device *vf_netdev) > > reinit_completion(&net_device_ctx->vf_add); > netdev_rx_handler_unregister(vf_netdev); > + > + /* Unlink the slave device and clear flag */ > + vf_netdev->permanent_bond = 0; > + ndev->permanent_bond = 0; > + * @permanent_bond: device is permanently bonded to another device I think we have been taught a definition of the word "permanent"
