/* * net/switchdev/switchdev.c - Switch device API * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us> * Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com> * * 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 <linux/kernel.h>#include <linux/types.h>#include <linux/init.h>#include <linux/mutex.h>#include <linux/notifier.h>#include <linux/netdevice.h>#include <linux/if_bridge.h>#include <net/ip_fib.h>#include <net/switchdev.h> /** * switchdev_port_attr_get - Get port attribute * * @dev: port device * @attr: attribute to get */int switchdev_port_attr_get(struct net_device *dev, struct switchdev_attr *attr){ const struct switchdev_ops *ops = dev->switchdev_ops; struct net_device *lower_dev; struct list_head *iter; struct switchdev_attr first = { .id = SWITCHDEV_ATTR_UNDEFINED }; int err = -EOPNOTSUPP; if (ops && ops->switchdev_port_attr_get) return ops->switchdev_port_attr_get(dev, attr); if (attr->flags & SWITCHDEV_F_NO_RECURSE) return err; /* Switch device port(s) may be stacked under * bond/team/vlan dev, so recurse down to get attr on * each port. Return -ENODATA if attr values don't * compare across ports. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { err = switchdev_port_attr_get(lower_dev, attr); if (err) break; if (first.id == SWITCHDEV_ATTR_UNDEFINED) first = *attr; else if (memcmp(&first, attr, sizeof(*attr))) return -ENODATA; } return err;}EXPORT_SYMBOL_GPL(switchdev_port_attr_get); static int __switchdev_port_attr_set(struct net_device *dev, struct switchdev_attr *attr){ const struct switchdev_ops *ops = dev->switchdev_ops; struct net_device *lower_dev; struct list_head *iter; int err = -EOPNOTSUPP; if (ops && ops->switchdev_port_attr_set) return ops->switchdev_port_attr_set(dev, attr); if (attr->flags & SWITCHDEV_F_NO_RECURSE) return err; /* Switch device port(s) may be stacked under * bond/team/vlan dev, so recurse down to set attr on * each port. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { err = __switchdev_port_attr_set(lower_dev, attr); if (err) break; } return err;} struct switchdev_attr_set_work { struct work_struct work; struct net_device *dev; struct switchdev_attr attr;}; static void switchdev_port_attr_set_work(struct work_struct *work){ struct switchdev_attr_set_work *asw = container_of(work, struct switchdev_attr_set_work, work); int err; rtnl_lock(); err = switchdev_port_attr_set(asw->dev, &asw->attr); BUG_ON(err); rtnl_unlock(); dev_put(asw->dev); kfree(work);} static int switchdev_port_attr_set_defer(struct net_device *dev, struct switchdev_attr *attr){ struct switchdev_attr_set_work *asw; asw = kmalloc(sizeof(*asw), GFP_ATOMIC); if (!asw) return -ENOMEM; INIT_WORK(&asw->work, switchdev_port_attr_set_work); dev_hold(dev); asw->dev = dev; memcpy(&asw->attr, attr, sizeof(asw->attr)); schedule_work(&asw->work); return 0;} /** * switchdev_port_attr_set - Set port attribute * * @dev: port device * @attr: attribute to set * * Use a 2-phase prepare-commit transaction model to ensure * system is not left in a partially updated state due to * failure from driver/device. */int switchdev_port_attr_set(struct net_device *dev, struct switchdev_attr *attr){ int err; if (!rtnl_is_locked()) { /* Running prepare-commit transaction across stacked * devices requires nothing moves, so if rtnl_lock is * not held, schedule a worker thread to hold rtnl_lock * while setting attr. */ return switchdev_port_attr_set_defer(dev, attr); } /* Phase I: prepare for attr set. Driver/device should fail * here if there are going to be issues in the commit phase, * such as lack of resources or support. The driver/device * should reserve resources needed for the commit phase here, * but should not commit the attr. */ attr->trans = SWITCHDEV_TRANS_PREPARE; err = __switchdev_port_attr_set(dev, attr); if (err) { /* Prepare phase failed: abort the transaction. Any * resources reserved in the prepare phase are * released. */ attr->trans = SWITCHDEV_TRANS_ABORT; __switchdev_port_attr_set(dev, attr); return err; } /* Phase II: commit attr set. This cannot fail as a fault * of driver/device. If it does, it's a bug in the driver/device * because the driver said everythings was OK in phase I. */ attr->trans = SWITCHDEV_TRANS_COMMIT; err = __switchdev_port_attr_set(dev, attr); BUG_ON(err); return err;}EXPORT_SYMBOL_GPL(switchdev_port_attr_set); static int __switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj){ const struct switchdev_ops *ops = dev->switchdev_ops; struct net_device *lower_dev; struct list_head *iter; int err = -EOPNOTSUPP; if (ops && ops->switchdev_port_obj_add) return ops->switchdev_port_obj_add(dev, obj); /* Switch device port(s) may be stacked under * bond/team/vlan dev, so recurse down to add object on * each port. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { err = __switchdev_port_obj_add(lower_dev, obj); if (err) break; } return err;} /** * switchdev_port_obj_add - Add port object * * @dev: port device * @obj: object to add * * Use a 2-phase prepare-commit transaction model to ensure * system is not left in a partially updated state due to * failure from driver/device. * * rtnl_lock must be held. */int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj){ int err; ASSERT_RTNL(); /* Phase I: prepare for obj add. Driver/device should fail * here if there are going to be issues in the commit phase, * such as lack of resources or support. The driver/device * should reserve resources needed for the commit phase here, * but should not commit the obj. */ obj->trans = SWITCHDEV_TRANS_PREPARE; err = __switchdev_port_obj_add(dev, obj); if (err) { /* Prepare phase failed: abort the transaction. Any * resources reserved in the prepare phase are * released. */ obj->trans = SWITCHDEV_TRANS_ABORT; __switchdev_port_obj_add(dev, obj); return err; } /* Phase II: commit obj add. This cannot fail as a fault * of driver/device. If it does, it's a bug in the driver/device * because the driver said everythings was OK in phase I. */ obj->trans = SWITCHDEV_TRANS_COMMIT; err = __switchdev_port_obj_add(dev, obj); WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, obj->id); return err;}EXPORT_SYMBOL_GPL(switchdev_port_obj_add); /** * switchdev_port_obj_del - Delete port object * * @dev: port device * @obj: object to delete */int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj){ const struct switchdev_ops *ops = dev->switchdev_ops; struct net_device *lower_dev; struct list_head *iter; int err = -EOPNOTSUPP; if (ops && ops->switchdev_port_obj_del) return ops->switchdev_port_obj_del(dev, obj); /* Switch device port(s) may be stacked under * bond/team/vlan dev, so recurse down to delete object on * each port. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { err = switchdev_port_obj_del(lower_dev, obj); if (err) break; } return err;}EXPORT_SYMBOL_GPL(switchdev_port_obj_del); /** * switchdev_port_obj_dump - Dump port objects * * @dev: port device * @obj: object to dump */int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj){ const struct switchdev_ops *ops = dev->switchdev_ops; struct net_device *lower_dev; struct list_head *iter; int err = -EOPNOTSUPP; if (ops && ops->switchdev_port_obj_dump) return ops->switchdev_port_obj_dump(dev, obj); /* Switch device port(s) may be stacked under * bond/team/vlan dev, so recurse down to dump objects on * first port at bottom of stack. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { err = switchdev_port_obj_dump(lower_dev, obj); break; } return err;}EXPORT_SYMBOL_GPL(switchdev_port_obj_dump); static DEFINE_MUTEX(switchdev_mutex);static RAW_NOTIFIER_HEAD(switchdev_notif_chain); /** * register_switchdev_notifier - Register notifier * @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_switchdev_notifier(struct notifier_block *nb){ int err; mutex_lock(&switchdev_mutex); err = raw_notifier_chain_register(&switchdev_notif_chain, nb); mutex_unlock(&switchdev_mutex); return err;}EXPORT_SYMBOL_GPL(register_switchdev_notifier); /** * unregister_switchdev_notifier - Unregister notifier * @nb: notifier_block * * Unregister switch device notifier. * Return values are same as for atomic_notifier_chain_unregister(). */int unregister_switchdev_notifier(struct notifier_block *nb){ int err; mutex_lock(&switchdev_mutex); err = raw_notifier_chain_unregister(&switchdev_notif_chain, nb); mutex_unlock(&switchdev_mutex); return err;}EXPORT_SYMBOL_GPL(unregister_switchdev_notifier); /** * call_switchdev_notifiers - Call notifiers * @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_switchdev_notifiers(unsigned long val, struct net_device *dev, struct switchdev_notifier_info *info){ int err; info->dev = dev; mutex_lock(&switchdev_mutex); err = raw_notifier_call_chain(&switchdev_notif_chain, val, info); mutex_unlock(&switchdev_mutex); return err;}EXPORT_SYMBOL_GPL(call_switchdev_notifiers); /** * switchdev_port_bridge_getlink - Get bridge port attributes * * @dev: port device * * Called for SELF on rtnl_bridge_getlink to get bridge port * attributes. */int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, u32 filter_mask, int nlflags){ struct switchdev_attr attr = { .id = SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS, }; u16 mode = BRIDGE_MODE_UNDEF; u32 mask = BR_LEARNING | BR_LEARNING_SYNC; int err; err = switchdev_port_attr_get(dev, &attr); if (err) return err; return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, attr.u.brport_flags, mask, nlflags);}EXPORT_SYMBOL_GPL(switchdev_port_bridge_getlink); static int switchdev_port_br_setflag(struct net_device *dev, struct nlattr *nlattr, unsigned long brport_flag){ struct switchdev_attr attr = { .id = SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS, }; u8 flag = nla_get_u8(nlattr); int err; err = switchdev_port_attr_get(dev, &attr); if (err) return err; if (flag) attr.u.brport_flags |= brport_flag; else attr.u.brport_flags &= ~brport_flag; return switchdev_port_attr_set(dev, &attr);} static const struct nla_policyswitchdev_port_bridge_policy[IFLA_BRPORT_MAX + 1] = { [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, [IFLA_BRPORT_COST] = { .type = NLA_U32 }, [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, [IFLA_BRPORT_FAST_LEAVE] = { .type = NLA_U8 }, [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 }, [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },}; static int switchdev_port_br_setlink_protinfo(struct net_device *dev, struct nlattr *protinfo){ struct nlattr *attr; int rem; int err; err = nla_validate_nested(protinfo, IFLA_BRPORT_MAX, switchdev_port_bridge_policy); if (err) return err; nla_for_each_nested(attr, protinfo, rem) { switch (nla_type(attr)) { case IFLA_BRPORT_LEARNING: err = switchdev_port_br_setflag(dev, attr, BR_LEARNING); break; case IFLA_BRPORT_LEARNING_SYNC: err = switchdev_port_br_setflag(dev, attr, BR_LEARNING_SYNC); break; default: err = -EOPNOTSUPP; break; } if (err) return err; } return 0;} static int switchdev_port_br_afspec(struct net_device *dev, struct nlattr *afspec, int (*f)(struct net_device *dev, struct switchdev_obj *obj)){ struct nlattr *attr; struct bridge_vlan_info *vinfo; struct switchdev_obj obj = { .id = SWITCHDEV_OBJ_PORT_VLAN, }; struct switchdev_obj_vlan *vlan = &obj.u.vlan; int rem;Lines 1–500 of 923. 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/* * net/switchdev/switchdev.c - Switch device API * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us> * Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com> * * 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 <linux/kernel.h> #include <linux/types.h> #include <linux/init.h> #include <linux/mutex.h> #include <linux/notifier.h> #include <linux/netdevice.h> #include <linux/if_bridge.h> #include <net/ip_fib.h> #include <net/switchdev.h> /** * switchdev_port_attr_get - Get port attribute * * @dev: port device * @attr: attribute to get */ int switchdev_port_attr_get(struct net_device *dev, struct switchdev_attr *attr) { const struct switchdev_ops *ops = dev->switchdev_ops; struct net_device *lower_dev; struct list_head *iter; struct switchdev_attr first = { .id = SWITCHDEV_ATTR_UNDEFINED }; int err = -EOPNOTSUPP; if (ops && ops->switchdev_port_attr_get) return ops->switchdev_port_attr_get(dev, attr); if (attr->flags & SWITCHDEV_F_NO_RECURSE) return err; /* Switch device port(s) may be stacked under * bond/team/vlan dev, so recurse down to get attr on * each port. Return -ENODATA if attr values don't * compare across ports. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { err = switchdev_port_attr_get(lower_dev, attr); if (err) break; if (first.id == SWITCHDEV_ATTR_UNDEFINED) first = *attr; else if (memcmp(&first, attr, sizeof(*attr))) return -ENODATA; } return err; } EXPORT_SYMBOL_GPL(switchdev_port_attr_get); static int __switchdev_port_attr_set(struct net_device *dev, struct switchdev_attr *attr) { const struct switchdev_ops *ops = dev->switchdev_ops; struct net_device *lower_dev; struct list_head *iter; int err = -EOPNOTSUPP; if (ops && ops->switchdev_port_attr_set) return ops->switchdev_port_attr_set(dev, attr); if (attr->flags & SWITCHDEV_F_NO_RECURSE) return err; /* Switch device port(s) may be stacked under * bond/team/vlan dev, so recurse down to set attr on * each port. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { err = __switchdev_port_attr_set(lower_dev, attr); if (err) break; } return err; } struct switchdev_attr_set_work { struct work_struct work; struct net_device *dev; struct switchdev_attr attr; }; static void switchdev_port_attr_set_work(struct work_struct *work) { struct switchdev_attr_set_work *asw = container_of(work, struct switchdev_attr_set_work, work); int err; rtnl_lock(); err = switchdev_port_attr_set(asw->dev, &asw->attr); BUG_ON(err); rtnl_unlock(); dev_put(asw->dev); kfree(work); } static int switchdev_port_attr_set_defer(struct net_device *dev, struct switchdev_attr *attr) { struct switchdev_attr_set_work *asw; asw = kmalloc(sizeof(*asw), GFP_ATOMIC); if (!asw) return -ENOMEM; INIT_WORK(&asw->work, switchdev_port_attr_set_work); dev_hold(dev); asw->dev = dev; memcpy(&asw->attr, attr, sizeof(asw->attr)); schedule_work(&asw->work); return 0; } /** * switchdev_port_attr_set - Set port attribute * * @dev: port device * @attr: attribute to set * * Use a 2-phase prepare-commit transaction model to ensure * system is not left in a partially updated state due to * failure from driver/device. */ int switchdev_port_attr_set(struct net_device *dev, struct switchdev_attr *attr) { int err; if (!rtnl_is_locked()) { /* Running prepare-commit transaction across stacked * devices requires nothing moves, so if rtnl_lock is * not held, schedule a worker thread to hold rtnl_lock * while setting attr. */ return switchdev_port_attr_set_defer(dev, attr); } /* Phase I: prepare for attr set. Driver/device should fail * here if there are going to be issues in the commit phase, * such as lack of resources or support. The driver/device * should reserve resources needed for the commit phase here, * but should not commit the attr. */ attr->trans = SWITCHDEV_TRANS_PREPARE; err = __switchdev_port_attr_set(dev, attr); if (err) { /* Prepare phase failed: abort the transaction. Any * resources reserved in the prepare phase are * released. */ attr->trans = SWITCHDEV_TRANS_ABORT; __switchdev_port_attr_set(dev, attr); return err; } /* Phase II: commit attr set. This cannot fail as a fault * of driver/device. If it does, it's a bug in the driver/device * because the driver said everythings was OK in phase I. */ attr->trans = SWITCHDEV_TRANS_COMMIT; err = __switchdev_port_attr_set(dev, attr); BUG_ON(err); return err; } EXPORT_SYMBOL_GPL(switchdev_port_attr_set); static int __switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj) { const struct switchdev_ops *ops = dev->switchdev_ops; struct net_device *lower_dev; struct list_head *iter; int err = -EOPNOTSUPP; if (ops && ops->switchdev_port_obj_add) return ops->switchdev_port_obj_add(dev, obj); /* Switch device port(s) may be stacked under * bond/team/vlan dev, so recurse down to add object on * each port. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { err = __switchdev_port_obj_add(lower_dev, obj); if (err) break; } return err; } /** * switchdev_port_obj_add - Add port object * * @dev: port device * @obj: object to add * * Use a 2-phase prepare-commit transaction model to ensure * system is not left in a partially updated state due to * failure from driver/device. * * rtnl_lock must be held. */ int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj) { int err; ASSERT_RTNL(); /* Phase I: prepare for obj add. Driver/device should fail * here if there are going to be issues in the commit phase, * such as lack of resources or support. The driver/device * should reserve resources needed for the commit phase here, * but should not commit the obj. */ obj->trans = SWITCHDEV_TRANS_PREPARE; err = __switchdev_port_obj_add(dev, obj); if (err) { /* Prepare phase failed: abort the transaction. Any * resources reserved in the prepare phase are * released. */ obj->trans = SWITCHDEV_TRANS_ABORT; __switchdev_port_obj_add(dev, obj); return err; } /* Phase II: commit obj add. This cannot fail as a fault * of driver/device. If it does, it's a bug in the driver/device * because the driver said everythings was OK in phase I. */ obj->trans = SWITCHDEV_TRANS_COMMIT; err = __switchdev_port_obj_add(dev, obj); WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, obj->id); return err; } EXPORT_SYMBOL_GPL(switchdev_port_obj_add); /** * switchdev_port_obj_del - Delete port object * * @dev: port device * @obj: object to delete */ int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj) { const struct switchdev_ops *ops = dev->switchdev_ops; struct net_device *lower_dev; struct list_head *iter; int err = -EOPNOTSUPP; if (ops && ops->switchdev_port_obj_del) return ops->switchdev_port_obj_del(dev, obj); /* Switch device port(s) may be stacked under * bond/team/vlan dev, so recurse down to delete object on * each port. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { err = switchdev_port_obj_del(lower_dev, obj); if (err) break; } return err; } EXPORT_SYMBOL_GPL(switchdev_port_obj_del); /** * switchdev_port_obj_dump - Dump port objects * * @dev: port device * @obj: object to dump */ int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj) { const struct switchdev_ops *ops = dev->switchdev_ops; struct net_device *lower_dev; struct list_head *iter; int err = -EOPNOTSUPP; if (ops && ops->switchdev_port_obj_dump) return ops->switchdev_port_obj_dump(dev, obj); /* Switch device port(s) may be stacked under * bond/team/vlan dev, so recurse down to dump objects on * first port at bottom of stack. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { err = switchdev_port_obj_dump(lower_dev, obj); break; } return err; } EXPORT_SYMBOL_GPL(switchdev_port_obj_dump); static DEFINE_MUTEX(switchdev_mutex); static RAW_NOTIFIER_HEAD(switchdev_notif_chain); /** * register_switchdev_notifier - Register notifier * @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_switchdev_notifier(struct notifier_block *nb) { int err; mutex_lock(&switchdev_mutex); err = raw_notifier_chain_register(&switchdev_notif_chain, nb); mutex_unlock(&switchdev_mutex); return err; } EXPORT_SYMBOL_GPL(register_switchdev_notifier); /** * unregister_switchdev_notifier - Unregister notifier * @nb: notifier_block * * Unregister switch device notifier. * Return values are same as for atomic_notifier_chain_unregister(). */ int unregister_switchdev_notifier(struct notifier_block *nb) { int err; mutex_lock(&switchdev_mutex); err = raw_notifier_chain_unregister(&switchdev_notif_chain, nb); mutex_unlock(&switchdev_mutex); return err; } EXPORT_SYMBOL_GPL(unregister_switchdev_notifier); /** * call_switchdev_notifiers - Call notifiers * @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_switchdev_notifiers(unsigned long val, struct net_device *dev, struct switchdev_notifier_info *info) { int err; info->dev = dev; mutex_lock(&switchdev_mutex); err = raw_notifier_call_chain(&switchdev_notif_chain, val, info); mutex_unlock(&switchdev_mutex); return err; } EXPORT_SYMBOL_GPL(call_switchdev_notifiers); /** * switchdev_port_bridge_getlink - Get bridge port attributes * * @dev: port device * * Called for SELF on rtnl_bridge_getlink to get bridge port * attributes. */ int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, u32 filter_mask, int nlflags) { struct switchdev_attr attr = { .id = SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS, }; u16 mode = BRIDGE_MODE_UNDEF; u32 mask = BR_LEARNING | BR_LEARNING_SYNC; int err; err = switchdev_port_attr_get(dev, &attr); if (err) return err; return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, attr.u.brport_flags, mask, nlflags); } EXPORT_SYMBOL_GPL(switchdev_port_bridge_getlink); static int switchdev_port_br_setflag(struct net_device *dev, struct nlattr *nlattr, unsigned long brport_flag) { struct switchdev_attr attr = { .id = SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS, }; u8 flag = nla_get_u8(nlattr); int err; err = switchdev_port_attr_get(dev, &attr); if (err) return err; if (flag) attr.u.brport_flags |= brport_flag; else attr.u.brport_flags &= ~brport_flag; return switchdev_port_attr_set(dev, &attr); } static const struct nla_policy switchdev_port_bridge_policy[IFLA_BRPORT_MAX + 1] = { [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, [IFLA_BRPORT_COST] = { .type = NLA_U32 }, [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, [IFLA_BRPORT_FAST_LEAVE] = { .type = NLA_U8 }, [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 }, [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, }; static int switchdev_port_br_setlink_protinfo(struct net_device *dev, struct nlattr *protinfo) { struct nlattr *attr; int rem; int err; err = nla_validate_nested(protinfo, IFLA_BRPORT_MAX, switchdev_port_bridge_policy); if (err) return err; nla_for_each_nested(attr, protinfo, rem) { switch (nla_type(attr)) { case IFLA_BRPORT_LEARNING: err = switchdev_port_br_setflag(dev, attr, BR_LEARNING); break; case IFLA_BRPORT_LEARNING_SYNC: err = switchdev_port_br_setflag(dev, attr, BR_LEARNING_SYNC); break; default: err = -EOPNOTSUPP; break; } if (err) return err; } return 0; } static int switchdev_port_br_afspec(struct net_device *dev, struct nlattr *afspec, int (*f)(struct net_device *dev, struct switchdev_obj *obj)) { struct nlattr *attr; struct bridge_vlan_info *vinfo; struct switchdev_obj obj = { .id = SWITCHDEV_OBJ_PORT_VLAN, }; struct switchdev_obj_vlan *vlan = &obj.u.vlan; int rem;