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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
  1. include/linux/netdevice.h +3 −4
  2. 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#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */72#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
73#define NET_RX_DROP 1 /* packet dropped */73#define NET_RX_DROP 1 /* packet dropped */
74 74
75#define MAX_NEST_DEV 8
76
75/*77/*
76 * Transmit return codes: transmit return codes originate from three different78 * Transmit return codes: transmit return codes originate from three different
77 * namespaces:79 * namespaces:
@@ -4389,11 +4391,8 @@ void *netdev_lower_get_next(struct net_device *dev, · 4311 unmodified lines
4389 ldev; \4391 ldev; \
4390 ldev = netdev_lower_get_next(dev, &(iter)))4392 ldev = netdev_lower_get_next(dev, &(iter)))
4391 4393
4392struct net_device *netdev_all_lower_get_next(struct net_device *dev,4394struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev,
4393 struct list_head **iter);4395 struct list_head **iter);
4394struct net_device *netdev_all_lower_get_next_rcu(struct net_device *dev,
4395 struct list_head **iter);
4396
4397int netdev_walk_all_lower_dev(struct net_device *dev,4396int netdev_walk_all_lower_dev(struct net_device *dev,
4398 int (*fn)(struct net_device *lower_dev,4397 int (*fn)(struct net_device *lower_dev,
4399 void *data),4398 void *data),
net/core/dev.c+3−3
@@ -146,7 +146,6 @@ · 145 unmodified lines
146#include "net-sysfs.h"146#include "net-sysfs.h"
147 147
148#define MAX_GRO_SKBS 8148#define MAX_GRO_SKBS 8
149#define MAX_NEST_DEV 8
150 149
151/* This should be increased if a protocol with a bigger head is added. */150/* This should be increased if a protocol with a bigger head is added. */
152#define GRO_MAX_HEAD (MAX_HEADER + 128)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 return 0;7206 return 0;
7208}7207}
7209 7208
7210static struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev,7209struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev,
7211 struct list_head **iter)7210 struct list_head **iter)
7212{7211{
7213 struct netdev_adjacent *lower;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 return lower->dev;7220 return lower->dev;
7222}7221}
7222EXPORT_SYMBOL(netdev_next_lower_dev_rcu);
7223 7223
7224static u8 __netdev_upper_depth(struct net_device *dev)7224static u8 __netdev_upper_depth(struct net_device *dev)
7225{7225{