![Elad Raz](/assets/img/avatar_default.png)
Define HW multicast entry: MAC and VID. Using a MAC address simplifies support for both IPV4 and IPv6. Signed-off-by: Elad Raz <eladr@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1386 lines
35 KiB
C
1386 lines
35 KiB
C
/*
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* net/switchdev/switchdev.c - Switch device API
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* Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us>
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* Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/mutex.h>
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#include <linux/notifier.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/if_bridge.h>
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#include <linux/list.h>
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#include <linux/workqueue.h>
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#include <linux/if_vlan.h>
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#include <net/ip_fib.h>
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#include <net/switchdev.h>
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/**
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* switchdev_trans_item_enqueue - Enqueue data item to transaction queue
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*
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* @trans: transaction
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* @data: pointer to data being queued
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* @destructor: data destructor
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* @tritem: transaction item being queued
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*
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* Enqeueue data item to transaction queue. tritem is typically placed in
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* cointainter pointed at by data pointer. Destructor is called on
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* transaction abort and after successful commit phase in case
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* the caller did not dequeue the item before.
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*/
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void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
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void *data, void (*destructor)(void const *),
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struct switchdev_trans_item *tritem)
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{
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tritem->data = data;
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tritem->destructor = destructor;
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list_add_tail(&tritem->list, &trans->item_list);
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}
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EXPORT_SYMBOL_GPL(switchdev_trans_item_enqueue);
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static struct switchdev_trans_item *
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__switchdev_trans_item_dequeue(struct switchdev_trans *trans)
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{
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struct switchdev_trans_item *tritem;
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if (list_empty(&trans->item_list))
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return NULL;
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tritem = list_first_entry(&trans->item_list,
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struct switchdev_trans_item, list);
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list_del(&tritem->list);
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return tritem;
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}
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/**
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* switchdev_trans_item_dequeue - Dequeue data item from transaction queue
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*
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* @trans: transaction
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*/
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void *switchdev_trans_item_dequeue(struct switchdev_trans *trans)
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{
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struct switchdev_trans_item *tritem;
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tritem = __switchdev_trans_item_dequeue(trans);
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BUG_ON(!tritem);
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return tritem->data;
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}
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EXPORT_SYMBOL_GPL(switchdev_trans_item_dequeue);
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static void switchdev_trans_init(struct switchdev_trans *trans)
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{
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INIT_LIST_HEAD(&trans->item_list);
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}
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static void switchdev_trans_items_destroy(struct switchdev_trans *trans)
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{
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struct switchdev_trans_item *tritem;
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while ((tritem = __switchdev_trans_item_dequeue(trans)))
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tritem->destructor(tritem->data);
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}
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static void switchdev_trans_items_warn_destroy(struct net_device *dev,
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struct switchdev_trans *trans)
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{
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WARN(!list_empty(&trans->item_list), "%s: transaction item queue is not empty.\n",
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dev->name);
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switchdev_trans_items_destroy(trans);
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}
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static LIST_HEAD(deferred);
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static DEFINE_SPINLOCK(deferred_lock);
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typedef void switchdev_deferred_func_t(struct net_device *dev,
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const void *data);
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struct switchdev_deferred_item {
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struct list_head list;
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struct net_device *dev;
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switchdev_deferred_func_t *func;
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unsigned long data[0];
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};
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static struct switchdev_deferred_item *switchdev_deferred_dequeue(void)
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{
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struct switchdev_deferred_item *dfitem;
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spin_lock_bh(&deferred_lock);
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if (list_empty(&deferred)) {
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dfitem = NULL;
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goto unlock;
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}
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dfitem = list_first_entry(&deferred,
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struct switchdev_deferred_item, list);
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list_del(&dfitem->list);
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unlock:
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spin_unlock_bh(&deferred_lock);
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return dfitem;
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}
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/**
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* switchdev_deferred_process - Process ops in deferred queue
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*
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* Called to flush the ops currently queued in deferred ops queue.
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* rtnl_lock must be held.
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*/
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void switchdev_deferred_process(void)
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{
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struct switchdev_deferred_item *dfitem;
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ASSERT_RTNL();
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while ((dfitem = switchdev_deferred_dequeue())) {
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dfitem->func(dfitem->dev, dfitem->data);
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dev_put(dfitem->dev);
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kfree(dfitem);
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}
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}
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EXPORT_SYMBOL_GPL(switchdev_deferred_process);
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static void switchdev_deferred_process_work(struct work_struct *work)
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{
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rtnl_lock();
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switchdev_deferred_process();
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rtnl_unlock();
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}
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static DECLARE_WORK(deferred_process_work, switchdev_deferred_process_work);
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static int switchdev_deferred_enqueue(struct net_device *dev,
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const void *data, size_t data_len,
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switchdev_deferred_func_t *func)
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{
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struct switchdev_deferred_item *dfitem;
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dfitem = kmalloc(sizeof(*dfitem) + data_len, GFP_ATOMIC);
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if (!dfitem)
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return -ENOMEM;
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dfitem->dev = dev;
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dfitem->func = func;
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memcpy(dfitem->data, data, data_len);
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dev_hold(dev);
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spin_lock_bh(&deferred_lock);
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list_add_tail(&dfitem->list, &deferred);
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spin_unlock_bh(&deferred_lock);
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schedule_work(&deferred_process_work);
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return 0;
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}
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/**
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* switchdev_port_attr_get - Get port attribute
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*
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* @dev: port device
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* @attr: attribute to get
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*/
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int switchdev_port_attr_get(struct net_device *dev, struct switchdev_attr *attr)
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{
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const struct switchdev_ops *ops = dev->switchdev_ops;
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struct net_device *lower_dev;
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struct list_head *iter;
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struct switchdev_attr first = {
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.id = SWITCHDEV_ATTR_ID_UNDEFINED
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};
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int err = -EOPNOTSUPP;
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if (ops && ops->switchdev_port_attr_get)
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return ops->switchdev_port_attr_get(dev, attr);
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if (attr->flags & SWITCHDEV_F_NO_RECURSE)
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return err;
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/* Switch device port(s) may be stacked under
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* bond/team/vlan dev, so recurse down to get attr on
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* each port. Return -ENODATA if attr values don't
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* compare across ports.
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*/
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netdev_for_each_lower_dev(dev, lower_dev, iter) {
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err = switchdev_port_attr_get(lower_dev, attr);
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if (err)
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break;
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if (first.id == SWITCHDEV_ATTR_ID_UNDEFINED)
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first = *attr;
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else if (memcmp(&first, attr, sizeof(*attr)))
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return -ENODATA;
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}
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return err;
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}
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EXPORT_SYMBOL_GPL(switchdev_port_attr_get);
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static int __switchdev_port_attr_set(struct net_device *dev,
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const struct switchdev_attr *attr,
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struct switchdev_trans *trans)
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{
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const struct switchdev_ops *ops = dev->switchdev_ops;
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struct net_device *lower_dev;
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struct list_head *iter;
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int err = -EOPNOTSUPP;
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if (ops && ops->switchdev_port_attr_set) {
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err = ops->switchdev_port_attr_set(dev, attr, trans);
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goto done;
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}
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if (attr->flags & SWITCHDEV_F_NO_RECURSE)
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goto done;
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/* Switch device port(s) may be stacked under
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* bond/team/vlan dev, so recurse down to set attr on
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* each port.
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*/
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netdev_for_each_lower_dev(dev, lower_dev, iter) {
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err = __switchdev_port_attr_set(lower_dev, attr, trans);
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if (err)
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break;
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}
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done:
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if (err == -EOPNOTSUPP && attr->flags & SWITCHDEV_F_SKIP_EOPNOTSUPP)
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err = 0;
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return err;
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}
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static int switchdev_port_attr_set_now(struct net_device *dev,
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const struct switchdev_attr *attr)
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{
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struct switchdev_trans trans;
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int err;
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switchdev_trans_init(&trans);
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/* Phase I: prepare for attr set. Driver/device should fail
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* here if there are going to be issues in the commit phase,
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* such as lack of resources or support. The driver/device
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* should reserve resources needed for the commit phase here,
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* but should not commit the attr.
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*/
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trans.ph_prepare = true;
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err = __switchdev_port_attr_set(dev, attr, &trans);
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if (err) {
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/* Prepare phase failed: abort the transaction. Any
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* resources reserved in the prepare phase are
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* released.
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*/
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if (err != -EOPNOTSUPP)
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switchdev_trans_items_destroy(&trans);
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return err;
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}
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/* Phase II: commit attr set. This cannot fail as a fault
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* of driver/device. If it does, it's a bug in the driver/device
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* because the driver said everythings was OK in phase I.
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*/
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trans.ph_prepare = false;
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err = __switchdev_port_attr_set(dev, attr, &trans);
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WARN(err, "%s: Commit of attribute (id=%d) failed.\n",
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dev->name, attr->id);
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switchdev_trans_items_warn_destroy(dev, &trans);
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return err;
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}
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static void switchdev_port_attr_set_deferred(struct net_device *dev,
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const void *data)
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{
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const struct switchdev_attr *attr = data;
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int err;
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err = switchdev_port_attr_set_now(dev, attr);
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if (err && err != -EOPNOTSUPP)
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netdev_err(dev, "failed (err=%d) to set attribute (id=%d)\n",
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err, attr->id);
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}
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static int switchdev_port_attr_set_defer(struct net_device *dev,
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const struct switchdev_attr *attr)
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{
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return switchdev_deferred_enqueue(dev, attr, sizeof(*attr),
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switchdev_port_attr_set_deferred);
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}
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/**
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* switchdev_port_attr_set - Set port attribute
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*
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* @dev: port device
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* @attr: attribute to set
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*
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* Use a 2-phase prepare-commit transaction model to ensure
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* system is not left in a partially updated state due to
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* failure from driver/device.
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*
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* rtnl_lock must be held and must not be in atomic section,
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* in case SWITCHDEV_F_DEFER flag is not set.
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*/
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int switchdev_port_attr_set(struct net_device *dev,
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const struct switchdev_attr *attr)
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{
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if (attr->flags & SWITCHDEV_F_DEFER)
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return switchdev_port_attr_set_defer(dev, attr);
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ASSERT_RTNL();
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return switchdev_port_attr_set_now(dev, attr);
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}
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EXPORT_SYMBOL_GPL(switchdev_port_attr_set);
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static size_t switchdev_obj_size(const struct switchdev_obj *obj)
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{
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switch (obj->id) {
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case SWITCHDEV_OBJ_ID_PORT_VLAN:
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return sizeof(struct switchdev_obj_port_vlan);
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case SWITCHDEV_OBJ_ID_IPV4_FIB:
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return sizeof(struct switchdev_obj_ipv4_fib);
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case SWITCHDEV_OBJ_ID_PORT_FDB:
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return sizeof(struct switchdev_obj_port_fdb);
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case SWITCHDEV_OBJ_ID_PORT_MDB:
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return sizeof(struct switchdev_obj_port_mdb);
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default:
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BUG();
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}
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return 0;
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}
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static int __switchdev_port_obj_add(struct net_device *dev,
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const struct switchdev_obj *obj,
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struct switchdev_trans *trans)
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{
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const struct switchdev_ops *ops = dev->switchdev_ops;
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struct net_device *lower_dev;
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struct list_head *iter;
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int err = -EOPNOTSUPP;
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if (ops && ops->switchdev_port_obj_add)
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return ops->switchdev_port_obj_add(dev, obj, trans);
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/* Switch device port(s) may be stacked under
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* bond/team/vlan dev, so recurse down to add object on
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* each port.
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*/
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netdev_for_each_lower_dev(dev, lower_dev, iter) {
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err = __switchdev_port_obj_add(lower_dev, obj, trans);
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if (err)
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break;
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}
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return err;
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}
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static int switchdev_port_obj_add_now(struct net_device *dev,
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const struct switchdev_obj *obj)
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{
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struct switchdev_trans trans;
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int err;
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ASSERT_RTNL();
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switchdev_trans_init(&trans);
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/* Phase I: prepare for obj add. Driver/device should fail
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* here if there are going to be issues in the commit phase,
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* such as lack of resources or support. The driver/device
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* should reserve resources needed for the commit phase here,
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* but should not commit the obj.
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*/
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trans.ph_prepare = true;
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err = __switchdev_port_obj_add(dev, obj, &trans);
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if (err) {
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/* Prepare phase failed: abort the transaction. Any
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* resources reserved in the prepare phase are
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* released.
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*/
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if (err != -EOPNOTSUPP)
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switchdev_trans_items_destroy(&trans);
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return err;
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}
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/* Phase II: commit obj add. This cannot fail as a fault
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* of driver/device. If it does, it's a bug in the driver/device
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* because the driver said everythings was OK in phase I.
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*/
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trans.ph_prepare = false;
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err = __switchdev_port_obj_add(dev, obj, &trans);
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WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, obj->id);
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switchdev_trans_items_warn_destroy(dev, &trans);
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return err;
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}
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static void switchdev_port_obj_add_deferred(struct net_device *dev,
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const void *data)
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{
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const struct switchdev_obj *obj = data;
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int err;
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err = switchdev_port_obj_add_now(dev, obj);
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if (err && err != -EOPNOTSUPP)
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netdev_err(dev, "failed (err=%d) to add object (id=%d)\n",
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err, obj->id);
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}
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static int switchdev_port_obj_add_defer(struct net_device *dev,
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const struct switchdev_obj *obj)
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{
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return switchdev_deferred_enqueue(dev, obj, switchdev_obj_size(obj),
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switchdev_port_obj_add_deferred);
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}
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/**
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* switchdev_port_obj_add - Add port object
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*
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* @dev: port device
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* @id: object ID
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* @obj: object to add
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*
|
|
* 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 and must not be in atomic section,
|
|
* in case SWITCHDEV_F_DEFER flag is not set.
|
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*/
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int switchdev_port_obj_add(struct net_device *dev,
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const struct switchdev_obj *obj)
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{
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if (obj->flags & SWITCHDEV_F_DEFER)
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return switchdev_port_obj_add_defer(dev, obj);
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ASSERT_RTNL();
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return switchdev_port_obj_add_now(dev, obj);
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}
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EXPORT_SYMBOL_GPL(switchdev_port_obj_add);
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static int switchdev_port_obj_del_now(struct net_device *dev,
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const struct switchdev_obj *obj)
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{
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const struct switchdev_ops *ops = dev->switchdev_ops;
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struct net_device *lower_dev;
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struct list_head *iter;
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int err = -EOPNOTSUPP;
|
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if (ops && ops->switchdev_port_obj_del)
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return ops->switchdev_port_obj_del(dev, obj);
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/* Switch device port(s) may be stacked under
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* bond/team/vlan dev, so recurse down to delete object on
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* each port.
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*/
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netdev_for_each_lower_dev(dev, lower_dev, iter) {
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err = switchdev_port_obj_del_now(lower_dev, obj);
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if (err)
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break;
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}
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return err;
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}
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|
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static void switchdev_port_obj_del_deferred(struct net_device *dev,
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const void *data)
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{
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const struct switchdev_obj *obj = data;
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int err;
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err = switchdev_port_obj_del_now(dev, obj);
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if (err && err != -EOPNOTSUPP)
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netdev_err(dev, "failed (err=%d) to del object (id=%d)\n",
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err, obj->id);
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}
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|
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static int switchdev_port_obj_del_defer(struct net_device *dev,
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const struct switchdev_obj *obj)
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{
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return switchdev_deferred_enqueue(dev, obj, switchdev_obj_size(obj),
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switchdev_port_obj_del_deferred);
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}
|
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|
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/**
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* switchdev_port_obj_del - Delete port object
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*
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* @dev: port device
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* @id: object ID
|
|
* @obj: object to delete
|
|
*
|
|
* rtnl_lock must be held and must not be in atomic section,
|
|
* in case SWITCHDEV_F_DEFER flag is not set.
|
|
*/
|
|
int switchdev_port_obj_del(struct net_device *dev,
|
|
const struct switchdev_obj *obj)
|
|
{
|
|
if (obj->flags & SWITCHDEV_F_DEFER)
|
|
return switchdev_port_obj_del_defer(dev, obj);
|
|
ASSERT_RTNL();
|
|
return switchdev_port_obj_del_now(dev, obj);
|
|
}
|
|
EXPORT_SYMBOL_GPL(switchdev_port_obj_del);
|
|
|
|
/**
|
|
* switchdev_port_obj_dump - Dump port objects
|
|
*
|
|
* @dev: port device
|
|
* @id: object ID
|
|
* @obj: object to dump
|
|
* @cb: function to call with a filled object
|
|
*
|
|
* rtnl_lock must be held.
|
|
*/
|
|
int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj,
|
|
switchdev_obj_dump_cb_t *cb)
|
|
{
|
|
const struct switchdev_ops *ops = dev->switchdev_ops;
|
|
struct net_device *lower_dev;
|
|
struct list_head *iter;
|
|
int err = -EOPNOTSUPP;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (ops && ops->switchdev_port_obj_dump)
|
|
return ops->switchdev_port_obj_dump(dev, obj, cb);
|
|
|
|
/* 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, cb);
|
|
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);
|
|
|
|
struct switchdev_vlan_dump {
|
|
struct switchdev_obj_port_vlan vlan;
|
|
struct sk_buff *skb;
|
|
u32 filter_mask;
|
|
u16 flags;
|
|
u16 begin;
|
|
u16 end;
|
|
};
|
|
|
|
static int switchdev_port_vlan_dump_put(struct switchdev_vlan_dump *dump)
|
|
{
|
|
struct bridge_vlan_info vinfo;
|
|
|
|
vinfo.flags = dump->flags;
|
|
|
|
if (dump->begin == 0 && dump->end == 0) {
|
|
return 0;
|
|
} else if (dump->begin == dump->end) {
|
|
vinfo.vid = dump->begin;
|
|
if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO,
|
|
sizeof(vinfo), &vinfo))
|
|
return -EMSGSIZE;
|
|
} else {
|
|
vinfo.vid = dump->begin;
|
|
vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN;
|
|
if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO,
|
|
sizeof(vinfo), &vinfo))
|
|
return -EMSGSIZE;
|
|
vinfo.vid = dump->end;
|
|
vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN;
|
|
vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_END;
|
|
if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO,
|
|
sizeof(vinfo), &vinfo))
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int switchdev_port_vlan_dump_cb(struct switchdev_obj *obj)
|
|
{
|
|
struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
|
|
struct switchdev_vlan_dump *dump =
|
|
container_of(vlan, struct switchdev_vlan_dump, vlan);
|
|
int err = 0;
|
|
|
|
if (vlan->vid_begin > vlan->vid_end)
|
|
return -EINVAL;
|
|
|
|
if (dump->filter_mask & RTEXT_FILTER_BRVLAN) {
|
|
dump->flags = vlan->flags;
|
|
for (dump->begin = dump->end = vlan->vid_begin;
|
|
dump->begin <= vlan->vid_end;
|
|
dump->begin++, dump->end++) {
|
|
err = switchdev_port_vlan_dump_put(dump);
|
|
if (err)
|
|
return err;
|
|
}
|
|
} else if (dump->filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) {
|
|
if (dump->begin > vlan->vid_begin &&
|
|
dump->begin >= vlan->vid_end) {
|
|
if ((dump->begin - 1) == vlan->vid_end &&
|
|
dump->flags == vlan->flags) {
|
|
/* prepend */
|
|
dump->begin = vlan->vid_begin;
|
|
} else {
|
|
err = switchdev_port_vlan_dump_put(dump);
|
|
dump->flags = vlan->flags;
|
|
dump->begin = vlan->vid_begin;
|
|
dump->end = vlan->vid_end;
|
|
}
|
|
} else if (dump->end <= vlan->vid_begin &&
|
|
dump->end < vlan->vid_end) {
|
|
if ((dump->end + 1) == vlan->vid_begin &&
|
|
dump->flags == vlan->flags) {
|
|
/* append */
|
|
dump->end = vlan->vid_end;
|
|
} else {
|
|
err = switchdev_port_vlan_dump_put(dump);
|
|
dump->flags = vlan->flags;
|
|
dump->begin = vlan->vid_begin;
|
|
dump->end = vlan->vid_end;
|
|
}
|
|
} else {
|
|
err = -EINVAL;
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int switchdev_port_vlan_fill(struct sk_buff *skb, struct net_device *dev,
|
|
u32 filter_mask)
|
|
{
|
|
struct switchdev_vlan_dump dump = {
|
|
.vlan.obj.orig_dev = dev,
|
|
.vlan.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
|
|
.skb = skb,
|
|
.filter_mask = filter_mask,
|
|
};
|
|
int err = 0;
|
|
|
|
if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
|
|
(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
|
|
err = switchdev_port_obj_dump(dev, &dump.vlan.obj,
|
|
switchdev_port_vlan_dump_cb);
|
|
if (err)
|
|
goto err_out;
|
|
if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
|
|
/* last one */
|
|
err = switchdev_port_vlan_dump_put(&dump);
|
|
}
|
|
|
|
err_out:
|
|
return err == -EOPNOTSUPP ? 0 : err;
|
|
}
|
|
|
|
/**
|
|
* 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 = {
|
|
.orig_dev = dev,
|
|
.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
|
|
};
|
|
u16 mode = BRIDGE_MODE_UNDEF;
|
|
u32 mask = BR_LEARNING | BR_LEARNING_SYNC | BR_FLOOD;
|
|
int err;
|
|
|
|
err = switchdev_port_attr_get(dev, &attr);
|
|
if (err && err != -EOPNOTSUPP)
|
|
return err;
|
|
|
|
return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
|
|
attr.u.brport_flags, mask, nlflags,
|
|
filter_mask, switchdev_port_vlan_fill);
|
|
}
|
|
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 = {
|
|
.orig_dev = dev,
|
|
.id = SWITCHDEV_ATTR_ID_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;
|
|
case IFLA_BRPORT_UNICAST_FLOOD:
|
|
err = switchdev_port_br_setflag(dev, attr, BR_FLOOD);
|
|
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,
|
|
const struct switchdev_obj *obj))
|
|
{
|
|
struct nlattr *attr;
|
|
struct bridge_vlan_info *vinfo;
|
|
struct switchdev_obj_port_vlan vlan = {
|
|
.obj.orig_dev = dev,
|
|
.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
|
|
};
|
|
int rem;
|
|
int err;
|
|
|
|
nla_for_each_nested(attr, afspec, rem) {
|
|
if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO)
|
|
continue;
|
|
if (nla_len(attr) != sizeof(struct bridge_vlan_info))
|
|
return -EINVAL;
|
|
vinfo = nla_data(attr);
|
|
if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK)
|
|
return -EINVAL;
|
|
vlan.flags = vinfo->flags;
|
|
if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
|
|
if (vlan.vid_begin)
|
|
return -EINVAL;
|
|
vlan.vid_begin = vinfo->vid;
|
|
/* don't allow range of pvids */
|
|
if (vlan.flags & BRIDGE_VLAN_INFO_PVID)
|
|
return -EINVAL;
|
|
} else if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END) {
|
|
if (!vlan.vid_begin)
|
|
return -EINVAL;
|
|
vlan.vid_end = vinfo->vid;
|
|
if (vlan.vid_end <= vlan.vid_begin)
|
|
return -EINVAL;
|
|
err = f(dev, &vlan.obj);
|
|
if (err)
|
|
return err;
|
|
vlan.vid_begin = 0;
|
|
} else {
|
|
if (vlan.vid_begin)
|
|
return -EINVAL;
|
|
vlan.vid_begin = vinfo->vid;
|
|
vlan.vid_end = vinfo->vid;
|
|
err = f(dev, &vlan.obj);
|
|
if (err)
|
|
return err;
|
|
vlan.vid_begin = 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* switchdev_port_bridge_setlink - Set bridge port attributes
|
|
*
|
|
* @dev: port device
|
|
* @nlh: netlink header
|
|
* @flags: netlink flags
|
|
*
|
|
* Called for SELF on rtnl_bridge_setlink to set bridge port
|
|
* attributes.
|
|
*/
|
|
int switchdev_port_bridge_setlink(struct net_device *dev,
|
|
struct nlmsghdr *nlh, u16 flags)
|
|
{
|
|
struct nlattr *protinfo;
|
|
struct nlattr *afspec;
|
|
int err = 0;
|
|
|
|
protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
|
|
IFLA_PROTINFO);
|
|
if (protinfo) {
|
|
err = switchdev_port_br_setlink_protinfo(dev, protinfo);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
|
|
IFLA_AF_SPEC);
|
|
if (afspec)
|
|
err = switchdev_port_br_afspec(dev, afspec,
|
|
switchdev_port_obj_add);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(switchdev_port_bridge_setlink);
|
|
|
|
/**
|
|
* switchdev_port_bridge_dellink - Set bridge port attributes
|
|
*
|
|
* @dev: port device
|
|
* @nlh: netlink header
|
|
* @flags: netlink flags
|
|
*
|
|
* Called for SELF on rtnl_bridge_dellink to set bridge port
|
|
* attributes.
|
|
*/
|
|
int switchdev_port_bridge_dellink(struct net_device *dev,
|
|
struct nlmsghdr *nlh, u16 flags)
|
|
{
|
|
struct nlattr *afspec;
|
|
|
|
afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
|
|
IFLA_AF_SPEC);
|
|
if (afspec)
|
|
return switchdev_port_br_afspec(dev, afspec,
|
|
switchdev_port_obj_del);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(switchdev_port_bridge_dellink);
|
|
|
|
/**
|
|
* switchdev_port_fdb_add - Add FDB (MAC/VLAN) entry to port
|
|
*
|
|
* @ndmsg: netlink hdr
|
|
* @nlattr: netlink attributes
|
|
* @dev: port device
|
|
* @addr: MAC address to add
|
|
* @vid: VLAN to add
|
|
*
|
|
* Add FDB entry to switch device.
|
|
*/
|
|
int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
|
|
struct net_device *dev, const unsigned char *addr,
|
|
u16 vid, u16 nlm_flags)
|
|
{
|
|
struct switchdev_obj_port_fdb fdb = {
|
|
.obj.orig_dev = dev,
|
|
.obj.id = SWITCHDEV_OBJ_ID_PORT_FDB,
|
|
.vid = vid,
|
|
};
|
|
|
|
ether_addr_copy(fdb.addr, addr);
|
|
return switchdev_port_obj_add(dev, &fdb.obj);
|
|
}
|
|
EXPORT_SYMBOL_GPL(switchdev_port_fdb_add);
|
|
|
|
/**
|
|
* switchdev_port_fdb_del - Delete FDB (MAC/VLAN) entry from port
|
|
*
|
|
* @ndmsg: netlink hdr
|
|
* @nlattr: netlink attributes
|
|
* @dev: port device
|
|
* @addr: MAC address to delete
|
|
* @vid: VLAN to delete
|
|
*
|
|
* Delete FDB entry from switch device.
|
|
*/
|
|
int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
|
|
struct net_device *dev, const unsigned char *addr,
|
|
u16 vid)
|
|
{
|
|
struct switchdev_obj_port_fdb fdb = {
|
|
.obj.orig_dev = dev,
|
|
.obj.id = SWITCHDEV_OBJ_ID_PORT_FDB,
|
|
.vid = vid,
|
|
};
|
|
|
|
ether_addr_copy(fdb.addr, addr);
|
|
return switchdev_port_obj_del(dev, &fdb.obj);
|
|
}
|
|
EXPORT_SYMBOL_GPL(switchdev_port_fdb_del);
|
|
|
|
struct switchdev_fdb_dump {
|
|
struct switchdev_obj_port_fdb fdb;
|
|
struct net_device *dev;
|
|
struct sk_buff *skb;
|
|
struct netlink_callback *cb;
|
|
int idx;
|
|
};
|
|
|
|
static int switchdev_port_fdb_dump_cb(struct switchdev_obj *obj)
|
|
{
|
|
struct switchdev_obj_port_fdb *fdb = SWITCHDEV_OBJ_PORT_FDB(obj);
|
|
struct switchdev_fdb_dump *dump =
|
|
container_of(fdb, struct switchdev_fdb_dump, fdb);
|
|
u32 portid = NETLINK_CB(dump->cb->skb).portid;
|
|
u32 seq = dump->cb->nlh->nlmsg_seq;
|
|
struct nlmsghdr *nlh;
|
|
struct ndmsg *ndm;
|
|
|
|
if (dump->idx < dump->cb->args[0])
|
|
goto skip;
|
|
|
|
nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
|
|
sizeof(*ndm), NLM_F_MULTI);
|
|
if (!nlh)
|
|
return -EMSGSIZE;
|
|
|
|
ndm = nlmsg_data(nlh);
|
|
ndm->ndm_family = AF_BRIDGE;
|
|
ndm->ndm_pad1 = 0;
|
|
ndm->ndm_pad2 = 0;
|
|
ndm->ndm_flags = NTF_SELF;
|
|
ndm->ndm_type = 0;
|
|
ndm->ndm_ifindex = dump->dev->ifindex;
|
|
ndm->ndm_state = fdb->ndm_state;
|
|
|
|
if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, fdb->addr))
|
|
goto nla_put_failure;
|
|
|
|
if (fdb->vid && nla_put_u16(dump->skb, NDA_VLAN, fdb->vid))
|
|
goto nla_put_failure;
|
|
|
|
nlmsg_end(dump->skb, nlh);
|
|
|
|
skip:
|
|
dump->idx++;
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nlmsg_cancel(dump->skb, nlh);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
/**
|
|
* switchdev_port_fdb_dump - Dump port FDB (MAC/VLAN) entries
|
|
*
|
|
* @skb: netlink skb
|
|
* @cb: netlink callback
|
|
* @dev: port device
|
|
* @filter_dev: filter device
|
|
* @idx:
|
|
*
|
|
* Delete FDB entry from switch device.
|
|
*/
|
|
int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
|
|
struct net_device *dev,
|
|
struct net_device *filter_dev, int idx)
|
|
{
|
|
struct switchdev_fdb_dump dump = {
|
|
.fdb.obj.orig_dev = dev,
|
|
.fdb.obj.id = SWITCHDEV_OBJ_ID_PORT_FDB,
|
|
.dev = dev,
|
|
.skb = skb,
|
|
.cb = cb,
|
|
.idx = idx,
|
|
};
|
|
|
|
switchdev_port_obj_dump(dev, &dump.fdb.obj, switchdev_port_fdb_dump_cb);
|
|
return dump.idx;
|
|
}
|
|
EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump);
|
|
|
|
static struct net_device *switchdev_get_lowest_dev(struct net_device *dev)
|
|
{
|
|
const struct switchdev_ops *ops = dev->switchdev_ops;
|
|
struct net_device *lower_dev;
|
|
struct net_device *port_dev;
|
|
struct list_head *iter;
|
|
|
|
/* Recusively search down until we find a sw port dev.
|
|
* (A sw port dev supports switchdev_port_attr_get).
|
|
*/
|
|
|
|
if (ops && ops->switchdev_port_attr_get)
|
|
return dev;
|
|
|
|
netdev_for_each_lower_dev(dev, lower_dev, iter) {
|
|
port_dev = switchdev_get_lowest_dev(lower_dev);
|
|
if (port_dev)
|
|
return port_dev;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct net_device *switchdev_get_dev_by_nhs(struct fib_info *fi)
|
|
{
|
|
struct switchdev_attr attr = {
|
|
.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
|
|
};
|
|
struct switchdev_attr prev_attr;
|
|
struct net_device *dev = NULL;
|
|
int nhsel;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
/* For this route, all nexthop devs must be on the same switch. */
|
|
|
|
for (nhsel = 0; nhsel < fi->fib_nhs; nhsel++) {
|
|
const struct fib_nh *nh = &fi->fib_nh[nhsel];
|
|
|
|
if (!nh->nh_dev)
|
|
return NULL;
|
|
|
|
dev = switchdev_get_lowest_dev(nh->nh_dev);
|
|
if (!dev)
|
|
return NULL;
|
|
|
|
attr.orig_dev = dev;
|
|
if (switchdev_port_attr_get(dev, &attr))
|
|
return NULL;
|
|
|
|
if (nhsel > 0 &&
|
|
!netdev_phys_item_id_same(&prev_attr.u.ppid, &attr.u.ppid))
|
|
return NULL;
|
|
|
|
prev_attr = attr;
|
|
}
|
|
|
|
return dev;
|
|
}
|
|
|
|
/**
|
|
* switchdev_fib_ipv4_add - Add/modify switch IPv4 route entry
|
|
*
|
|
* @dst: route's IPv4 destination address
|
|
* @dst_len: destination address length (prefix length)
|
|
* @fi: route FIB info structure
|
|
* @tos: route TOS
|
|
* @type: route type
|
|
* @nlflags: netlink flags passed in (NLM_F_*)
|
|
* @tb_id: route table ID
|
|
*
|
|
* Add/modify switch IPv4 route entry.
|
|
*/
|
|
int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
|
|
u8 tos, u8 type, u32 nlflags, u32 tb_id)
|
|
{
|
|
struct switchdev_obj_ipv4_fib ipv4_fib = {
|
|
.obj.id = SWITCHDEV_OBJ_ID_IPV4_FIB,
|
|
.dst = dst,
|
|
.dst_len = dst_len,
|
|
.tos = tos,
|
|
.type = type,
|
|
.nlflags = nlflags,
|
|
.tb_id = tb_id,
|
|
};
|
|
struct net_device *dev;
|
|
int err = 0;
|
|
|
|
memcpy(&ipv4_fib.fi, fi, sizeof(ipv4_fib.fi));
|
|
|
|
/* Don't offload route if using custom ip rules or if
|
|
* IPv4 FIB offloading has been disabled completely.
|
|
*/
|
|
|
|
#ifdef CONFIG_IP_MULTIPLE_TABLES
|
|
if (fi->fib_net->ipv4.fib_has_custom_rules)
|
|
return 0;
|
|
#endif
|
|
|
|
if (fi->fib_net->ipv4.fib_offload_disabled)
|
|
return 0;
|
|
|
|
dev = switchdev_get_dev_by_nhs(fi);
|
|
if (!dev)
|
|
return 0;
|
|
|
|
ipv4_fib.obj.orig_dev = dev;
|
|
err = switchdev_port_obj_add(dev, &ipv4_fib.obj);
|
|
if (!err)
|
|
fi->fib_flags |= RTNH_F_OFFLOAD;
|
|
|
|
return err == -EOPNOTSUPP ? 0 : err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_add);
|
|
|
|
/**
|
|
* switchdev_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 switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
|
|
u8 tos, u8 type, u32 tb_id)
|
|
{
|
|
struct switchdev_obj_ipv4_fib ipv4_fib = {
|
|
.obj.id = SWITCHDEV_OBJ_ID_IPV4_FIB,
|
|
.dst = dst,
|
|
.dst_len = dst_len,
|
|
.tos = tos,
|
|
.type = type,
|
|
.nlflags = 0,
|
|
.tb_id = tb_id,
|
|
};
|
|
struct net_device *dev;
|
|
int err = 0;
|
|
|
|
memcpy(&ipv4_fib.fi, fi, sizeof(ipv4_fib.fi));
|
|
|
|
if (!(fi->fib_flags & RTNH_F_OFFLOAD))
|
|
return 0;
|
|
|
|
dev = switchdev_get_dev_by_nhs(fi);
|
|
if (!dev)
|
|
return 0;
|
|
|
|
ipv4_fib.obj.orig_dev = dev;
|
|
err = switchdev_port_obj_del(dev, &ipv4_fib.obj);
|
|
if (!err)
|
|
fi->fib_flags &= ~RTNH_F_OFFLOAD;
|
|
|
|
return err == -EOPNOTSUPP ? 0 : err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_del);
|
|
|
|
/**
|
|
* switchdev_fib_ipv4_abort - Abort an IPv4 FIB operation
|
|
*
|
|
* @fi: route FIB info structure
|
|
*/
|
|
void switchdev_fib_ipv4_abort(struct fib_info *fi)
|
|
{
|
|
/* There was a problem installing this route to the offload
|
|
* device. For now, until we come up with more refined
|
|
* policy handling, abruptly end IPv4 fib offloading for
|
|
* for entire net by flushing offload device(s) of all
|
|
* IPv4 routes, and mark IPv4 fib offloading broken from
|
|
* this point forward.
|
|
*/
|
|
|
|
fib_flush_external(fi->fib_net);
|
|
fi->fib_net->ipv4.fib_offload_disabled = true;
|
|
}
|
|
EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_abort);
|
|
|
|
static bool switchdev_port_same_parent_id(struct net_device *a,
|
|
struct net_device *b)
|
|
{
|
|
struct switchdev_attr a_attr = {
|
|
.orig_dev = a,
|
|
.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
|
|
.flags = SWITCHDEV_F_NO_RECURSE,
|
|
};
|
|
struct switchdev_attr b_attr = {
|
|
.orig_dev = b,
|
|
.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
|
|
.flags = SWITCHDEV_F_NO_RECURSE,
|
|
};
|
|
|
|
if (switchdev_port_attr_get(a, &a_attr) ||
|
|
switchdev_port_attr_get(b, &b_attr))
|
|
return false;
|
|
|
|
return netdev_phys_item_id_same(&a_attr.u.ppid, &b_attr.u.ppid);
|
|
}
|
|
|
|
static u32 switchdev_port_fwd_mark_get(struct net_device *dev,
|
|
struct net_device *group_dev)
|
|
{
|
|
struct net_device *lower_dev;
|
|
struct list_head *iter;
|
|
|
|
netdev_for_each_lower_dev(group_dev, lower_dev, iter) {
|
|
if (lower_dev == dev)
|
|
continue;
|
|
if (switchdev_port_same_parent_id(dev, lower_dev))
|
|
return lower_dev->offload_fwd_mark;
|
|
return switchdev_port_fwd_mark_get(dev, lower_dev);
|
|
}
|
|
|
|
return dev->ifindex;
|
|
}
|
|
|
|
static void switchdev_port_fwd_mark_reset(struct net_device *group_dev,
|
|
u32 old_mark, u32 *reset_mark)
|
|
{
|
|
struct net_device *lower_dev;
|
|
struct list_head *iter;
|
|
|
|
netdev_for_each_lower_dev(group_dev, lower_dev, iter) {
|
|
if (lower_dev->offload_fwd_mark == old_mark) {
|
|
if (!*reset_mark)
|
|
*reset_mark = lower_dev->ifindex;
|
|
lower_dev->offload_fwd_mark = *reset_mark;
|
|
}
|
|
switchdev_port_fwd_mark_reset(lower_dev, old_mark, reset_mark);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* switchdev_port_fwd_mark_set - Set port offload forwarding mark
|
|
*
|
|
* @dev: port device
|
|
* @group_dev: containing device
|
|
* @joining: true if dev is joining group; false if leaving group
|
|
*
|
|
* An ungrouped port's offload mark is just its ifindex. A grouped
|
|
* port's (member of a bridge, for example) offload mark is the ifindex
|
|
* of one of the ports in the group with the same parent (switch) ID.
|
|
* Ports on the same device in the same group will have the same mark.
|
|
*
|
|
* Example:
|
|
*
|
|
* br0 ifindex=9
|
|
* sw1p1 ifindex=2 mark=2
|
|
* sw1p2 ifindex=3 mark=2
|
|
* sw2p1 ifindex=4 mark=5
|
|
* sw2p2 ifindex=5 mark=5
|
|
*
|
|
* If sw2p2 leaves the bridge, we'll have:
|
|
*
|
|
* br0 ifindex=9
|
|
* sw1p1 ifindex=2 mark=2
|
|
* sw1p2 ifindex=3 mark=2
|
|
* sw2p1 ifindex=4 mark=4
|
|
* sw2p2 ifindex=5 mark=5
|
|
*/
|
|
void switchdev_port_fwd_mark_set(struct net_device *dev,
|
|
struct net_device *group_dev,
|
|
bool joining)
|
|
{
|
|
u32 mark = dev->ifindex;
|
|
u32 reset_mark = 0;
|
|
|
|
if (group_dev) {
|
|
ASSERT_RTNL();
|
|
if (joining)
|
|
mark = switchdev_port_fwd_mark_get(dev, group_dev);
|
|
else if (dev->offload_fwd_mark == mark)
|
|
/* Ohoh, this port was the mark reference port,
|
|
* but it's leaving the group, so reset the
|
|
* mark for the remaining ports in the group.
|
|
*/
|
|
switchdev_port_fwd_mark_reset(group_dev, mark,
|
|
&reset_mark);
|
|
}
|
|
|
|
dev->offload_fwd_mark = mark;
|
|
}
|
|
EXPORT_SYMBOL_GPL(switchdev_port_fwd_mark_set);
|