Commit 7151affe authored by Taehee Yoo's avatar Taehee Yoo Committed by David S. Miller
Browse files

net: export netdev_next_lower_dev_rcu() 



netdev_next_lower_dev_rcu() will be used to implement a function,
which is to walk all lower interfaces.
There are already functions that they walk their lower interface.
(netdev_walk_all_lower_dev_rcu, netdev_walk_all_lower_dev()).
But, there would be cases that couldn't be covered by given
netdev_walk_all_lower_dev_{rcu}() function.
So, some modules would want to implement own function,
which is to walk all lower interfaces.

In the next patch, netdev_next_lower_dev_rcu() will be used.
In addition, this patch removes two unused prototypes in netdevice.h.

Signed-off-by: default avatarTaehee Yoo <ap420073@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 064ff66e

include/linux/netdevice.h

+3 −4
Original line number Diff line number Diff line
@@ -72,6 +72,8 @@ void netdev_set_default_ethtool_ops(struct net_device *dev, 
#define NET_RX_SUCCESS		0	/* keep 'em coming, baby */

#define NET_RX_DROP		1	/* packet dropped */



#define MAX_NEST_DEV 8



/*

 * Transmit return codes: transmit return codes originate from three different

 * namespaces:
@@ -4389,11 +4391,8 @@ void *netdev_lower_get_next(struct net_device *dev, 
	     ldev; \

	     ldev = netdev_lower_get_next(dev, &(iter)))



struct net_device *netdev_all_lower_get_next(struct net_device *dev,

					     struct list_head **iter);

struct net_device *netdev_all_lower_get_next_rcu(struct net_device *dev,

struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev,

					     struct list_head **iter);



int netdev_walk_all_lower_dev(struct net_device *dev,

			      int (*fn)(struct net_device *lower_dev,

					void *data),

net/core/dev.c

+3 −3
Original line number Diff line number Diff line
@@ -146,7 +146,6 @@ 
#include "net-sysfs.h"



#define MAX_GRO_SKBS 8

#define MAX_NEST_DEV 8



/* This should be increased if a protocol with a bigger head is added. */

#define GRO_MAX_HEAD (MAX_HEADER + 128)
@@ -7207,7 +7206,7 @@ static int __netdev_walk_all_lower_dev(struct net_device *dev, 
	return 0;

}



static struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev,

struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev,

					     struct list_head **iter)

{

	struct netdev_adjacent *lower;
@@ -7220,6 +7219,7 @@ static struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev, 


	return lower->dev;

}

EXPORT_SYMBOL(netdev_next_lower_dev_rcu);



static u8 __netdev_upper_depth(struct net_device *dev)

{

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