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net: remove unnecessary variables and callback

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This patch removes variables and callback these are related to the nested
device structure.
devices that can be nested have their own nest_level variable that
represents the depth of nested devices.
In the previous patch, new {lower/upper}_level variables are added and
they replace old private nest_level variable.
So, this patch removes all 'nest_level' variables.

In order to avoid lockdep warning, ->ndo_get_lock_subclass() was added
to get lockdep subclass value, which is actually lower nested depth value.
But now, they use the dynamic lockdep key to avoid lockdep warning instead
of the subclass.
So, this patch removes ->ndo_get_lock_subclass() callback.

Signed-off-by: Taehee Yoo <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Taehee Yoo 2019-10-21 18:47:58 +00:00 • committed by David S. Miller
commit f3b0a18bb6
15 changed files with 10 additions and 92 deletions
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2
net/smc/smc_core.c
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@ -561,7 +561,7 @@ int smc_vlan_by_tcpsk(struct socket *clcsock, struct smc_init_info *ini)
}
rtnl_lock();
nest_lvl = dev_get_nest_level(ndev);
nest_lvl = ndev->lower_level;
for (i = 0; i < nest_lvl; i++) {
struct list_head *lower = &ndev->adj_list.lower;

2
net/smc/smc_pnet.c
View file

@ -718,7 +718,7 @@ static struct net_device *pnet_find_base_ndev(struct net_device *ndev)
int i, nest_lvl;
rtnl_lock();
nest_lvl = dev_get_nest_level(ndev);
nest_lvl = ndev->lower_level;
for (i = 0; i < nest_lvl; i++) {
struct list_head *lower = &ndev->adj_list.lower;