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net: Eliminate duplicated codes by creating one new function in_dev_select_addr 

There are two duplicated loops codes which used to select right
address in current codes. Now eliminate these codes by creating
one new function in_dev_select_addr.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gao Feng 2017-03-10 12:38:47 +08:00 committed by David S. Miller
parent 81663bee16
commit 8b57fd1ec1
1 changed files with 18 additions and 14 deletions
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32
net/ipv4/devinet.c
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@ -1192,6 +1192,18 @@ static int inet_gifconf(struct net_device *dev, char __user *buf, int len)
return done;
}
static __be32 in_dev_select_addr(const struct in_device *in_dev,
int scope)
{
for_primary_ifa(in_dev) {
if (ifa->ifa_scope != RT_SCOPE_LINK &&
ifa->ifa_scope <= scope)
return ifa->ifa_local;
} endfor_ifa(in_dev);
return 0;
}
__be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope)
{
__be32 addr = 0;
@ -1228,13 +1240,9 @@ __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope)
if (master_idx &&
(dev = dev_get_by_index_rcu(net, master_idx)) &&
(in_dev = __in_dev_get_rcu(dev))) {
for_primary_ifa(in_dev) {
if (ifa->ifa_scope != RT_SCOPE_LINK &&
ifa->ifa_scope <= scope) {
addr = ifa->ifa_local;
goto out_unlock;
}
} endfor_ifa(in_dev);
addr = in_dev_select_addr(in_dev, scope);
if (addr)
goto out_unlock;
}
/* Not loopback addresses on loopback should be preferred
@ -1249,13 +1257,9 @@ __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope)
if (!in_dev)
continue;
for_primary_ifa(in_dev) {
if (ifa->ifa_scope != RT_SCOPE_LINK &&
ifa->ifa_scope <= scope) {
addr = ifa->ifa_local;
goto out_unlock;
}
} endfor_ifa(in_dev);
addr = in_dev_select_addr(in_dev, scope);
if (addr)
goto out_unlock;
}
out_unlock:
rcu_read_unlock();