/* * net/switchdev/switchdev.c - Switch device API * Copyright (c) 2014 Jiri Pirko * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include #include #include #include #include #include #include #include /** * netdev_switch_parent_id_get - Get ID of a switch * @dev: port device * @psid: switch ID * * Get ID of a switch this port is part of. */ int netdev_switch_parent_id_get(struct net_device *dev, struct netdev_phys_item_id *psid) { const struct net_device_ops *ops = dev->netdev_ops; if (!ops->ndo_switch_parent_id_get) return -EOPNOTSUPP; return ops->ndo_switch_parent_id_get(dev, psid); } EXPORT_SYMBOL(netdev_switch_parent_id_get); /** * netdev_switch_port_stp_update - Notify switch device port of STP * state change * @dev: port device * @state: port STP state * * Notify switch device port of bridge port STP state change. */ int netdev_switch_port_stp_update(struct net_device *dev, u8 state) { const struct net_device_ops *ops = dev->netdev_ops; if (!ops->ndo_switch_port_stp_update) return -EOPNOTSUPP; WARN_ON(!ops->ndo_switch_parent_id_get); return ops->ndo_switch_port_stp_update(dev, state); } EXPORT_SYMBOL(netdev_switch_port_stp_update); static DEFINE_MUTEX(netdev_switch_mutex); static RAW_NOTIFIER_HEAD(netdev_switch_notif_chain); /** * register_netdev_switch_notifier - Register nofifier * @nb: notifier_block * * Register switch device notifier. This should be used by code * which needs to monitor events happening in particular device. * Return values are same as for atomic_notifier_chain_register(). */ int register_netdev_switch_notifier(struct notifier_block *nb) { int err; mutex_lock(&netdev_switch_mutex); err = raw_notifier_chain_register(&netdev_switch_notif_chain, nb); mutex_unlock(&netdev_switch_mutex); return err; } EXPORT_SYMBOL(register_netdev_switch_notifier); /** * unregister_netdev_switch_notifier - Unregister nofifier * @nb: notifier_block * * Unregister switch device notifier. * Return values are same as for atomic_notifier_chain_unregister(). */ int unregister_netdev_switch_notifier(struct notifier_block *nb) { int err; mutex_lock(&netdev_switch_mutex); err = raw_notifier_chain_unregister(&netdev_switch_notif_chain, nb); mutex_unlock(&netdev_switch_mutex); return err; } EXPORT_SYMBOL(unregister_netdev_switch_notifier); /** * call_netdev_switch_notifiers - Call nofifiers * @val: value passed unmodified to notifier function * @dev: port device * @info: notifier information data * * Call all network notifier blocks. This should be called by driver * when it needs to propagate hardware event. * Return values are same as for atomic_notifier_call_chain(). */ int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev, struct netdev_switch_notifier_info *info) { int err; info->dev = dev; mutex_lock(&netdev_switch_mutex); err = raw_notifier_call_chain(&netdev_switch_notif_chain, val, info); mutex_unlock(&netdev_switch_mutex); return err; } EXPORT_SYMBOL(call_netdev_switch_notifiers); /** * netdev_switch_port_bridge_setlink - Notify switch device port of bridge * port attributes * * @dev: port device * @nlh: netlink msg with bridge port attributes * @flags: bridge setlink flags * * Notify switch device port of bridge port attributes */ int netdev_switch_port_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) { const struct net_device_ops *ops = dev->netdev_ops; if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) return 0; if (!ops->ndo_bridge_setlink) return -EOPNOTSUPP; return ops->ndo_bridge_setlink(dev, nlh, flags); } EXPORT_SYMBOL(netdev_switch_port_bridge_setlink); /** * netdev_switch_port_bridge_dellink - Notify switch device port of bridge * port attribute delete * * @dev: port device * @nlh: netlink msg with bridge port attributes * @flags: bridge setlink flags * * Notify switch device port of bridge port attribute delete */ int netdev_switch_port_bridge_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) { const struct net_device_ops *ops = dev->netdev_ops; if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) return 0; if (!ops->ndo_bridge_dellink) return -EOPNOTSUPP; return ops->ndo_bridge_dellink(dev, nlh, flags); } EXPORT_SYMBOL(netdev_switch_port_bridge_dellink); /** * ndo_dflt_netdev_switch_port_bridge_setlink - default ndo bridge setlink * op for master devices * * @dev: port device * @nlh: netlink msg with bridge port attributes * @flags: bridge setlink flags * * Notify master device slaves of bridge port attributes */ int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) { struct net_device *lower_dev; struct list_head *iter; int ret = 0, err = 0; if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) return ret; netdev_for_each_lower_dev(dev, lower_dev, iter) { err = netdev_switch_port_bridge_setlink(lower_dev, nlh, flags); if (err && err != -EOPNOTSUPP) ret = err; } return ret; } EXPORT_SYMBOL(ndo_dflt_netdev_switch_port_bridge_setlink); /** * ndo_dflt_netdev_switch_port_bridge_dellink - default ndo bridge dellink * op for master devices * * @dev: port device * @nlh: netlink msg with bridge port attributes * @flags: bridge dellink flags * * Notify master device slaves of bridge port attribute deletes */ int ndo_dflt_netdev_switch_port_bridge_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) { struct net_device *lower_dev; struct list_head *iter; int ret = 0, err = 0; if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) return ret; netdev_for_each_lower_dev(dev, lower_dev, iter) { err = netdev_switch_port_bridge_dellink(lower_dev, nlh, flags); if (err && err != -EOPNOTSUPP) ret = err; } return ret; } EXPORT_SYMBOL(ndo_dflt_netdev_switch_port_bridge_dellink); /** * netdev_switch_fib_ipv4_add - Add IPv4 route entry to switch * * @dst: route's IPv4 destination address * @dst_len: destination address length (prefix length) * @fi: route FIB info structure * @tos: route TOS * @type: route type * @tb_id: route table ID * * Add IPv4 route entry to switch device. */ int netdev_switch_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi, u8 tos, u8 type, u32 tb_id) { /* Don't offload route if using custom ip rules */ if (fi->fib_net->ipv4.fib_has_custom_rules) return 0; return 0; } EXPORT_SYMBOL(netdev_switch_fib_ipv4_add); /** * netdev_switch_fib_ipv4_del - Delete IPv4 route entry from switch * * @dst: route's IPv4 destination address * @dst_len: destination address length (prefix length) * @fi: route FIB info structure * @tos: route TOS * @type: route type * @tb_id: route table ID * * Delete IPv4 route entry from switch device. */ int netdev_switch_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi, u8 tos, u8 type, u32 tb_id) { return 0; } EXPORT_SYMBOL(netdev_switch_fib_ipv4_del);