net: add netdev_for_each_upper_dev_rcu() (8b5be856) · Commits · 戴 / test

The new macro netdev_for_each_upper_dev_rcu(dev, upper, iter) iterates through the dev->upper_dev_list starting from the first element, using the netdev_upper_get_next_dev_rcu(dev, &iter). Must be called under RCU read lock. CC: "David S. Miller" <davem@davemloft.net> CC: Eric Dumazet <edumazet@google.com> CC: Jiri Pirko <jiri@resnulli.us> CC: Alexander Duyck <alexander.h.duyck@intel.com> CC: Cong Wang <amwang@redhat.com> Signed-off-by:

Veaceslav Falico <vfalico@redhat.com> Signed-off-by:

David S. Miller <davem@davemloft.net>

include/linux/netdevice.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -2768,6 +2768,16 @@ extern int bpf_jit_enable;
		extern bool netdev_has_upper_dev(struct net_device *dev,
		struct net_device *upper_dev);
		extern bool netdev_has_any_upper_dev(struct net_device *dev);
		extern struct net_device netdev_upper_get_next_dev_rcu(struct net_device dev,
		struct list_head **iter);

		/* iterate through upper list, must be called under RCU read lock */
		#define netdev_for_each_upper_dev_rcu(dev, upper, iter) \
		for (iter = &(dev)->upper_dev_list, \
		upper = netdev_upper_get_next_dev_rcu(dev, &(iter)); \
		upper; \
		upper = netdev_upper_get_next_dev_rcu(dev, &(iter)))

		extern struct net_device netdev_master_upper_dev_get(struct net_device dev);
		extern struct net_device netdev_master_upper_dev_get_rcu(struct net_device dev);
		extern int netdev_upper_dev_link(struct net_device *dev,

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