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.

Taehee Yoo committed 6 years ago

Commit 7151aff1 parent 064ff662 files · +6 −7Browse files

Unified · Split

2 files

include/linux/netdevice.h +3 −4
net/core/dev.c +3 −3

include/linux/netdevice.h+3−4

@@ -72,6 +72,8 @@ void netdev_set_default_ethtool_ops(struct net_device *dev, · 71 unmodified lines
72	72	#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
73	73	#define NET_RX_DROP 1 /* packet dropped */
74	74
	75	+#define MAX_NEST_DEV 8
	76	+
75	77	/*
76	78	* Transmit return codes: transmit return codes originate from three different
77	79	* namespaces:
@@ -4389,11 +4391,8 @@ void netdev_lower_get_next(struct net_device dev, · 4311 unmodified lines
4389	4391	ldev; \
4390	4392	ldev = netdev_lower_get_next(dev, &(iter)))
4391	4393
4392		−struct net_device netdev_all_lower_get_next(struct net_device dev,
	4394	+struct net_device netdev_next_lower_dev_rcu(struct net_device dev,
4393	4395	struct list_head **iter);
4394		−struct net_device netdev_all_lower_get_next_rcu(struct net_device dev,
4395		− struct list_head **iter);
4396		−
4397	4396	int netdev_walk_all_lower_dev(struct net_device *dev,
4398	4397	int (fn)(struct net_device lower_dev,
4399	4398	void *data),

net/core/dev.c+3−3

@@ -146,7 +146,6 @@ · 145 unmodified lines
146	146	#include "net-sysfs.h"
147	147
148	148	#define MAX_GRO_SKBS 8
149		−#define MAX_NEST_DEV 8
150	149
151	150	/* This should be increased if a protocol with a bigger head is added. */
152	151	#define GRO_MAX_HEAD (MAX_HEADER + 128)
@@ -7207,8 +7206,8 @@ static int __netdev_walk_all_lower_dev(struct net_device *dev, · 7054 unmodified lines
7207	7206	return 0;
7208	7207	}
7209	7208
7210		−static struct net_device netdev_next_lower_dev_rcu(struct net_device dev,
7211		− struct list_head **iter)
	7209	+struct net_device netdev_next_lower_dev_rcu(struct net_device dev,
	7210	+ struct list_head **iter)
7212	7211	{
7213	7212	struct netdev_adjacent *lower;
7214	7213
@@ -7220,6 +7219,7 @@ static struct net_device netdev_next_lower_dev_rcu(struct net_device dev, · 5 unmodified lines
7220	7219
7221	7220	return lower->dev;
7222	7221	}
	7222	+EXPORT_SYMBOL(netdev_next_lower_dev_rcu);
7223	7223
7224	7224	static u8 __netdev_upper_depth(struct net_device *dev)
7225	7225	{