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net: introduce name_node struct to be used in hashlist

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Introduce name_node structure to hold name of device and put it into
hashlist instead of putting there struct net_device directly. Add a
necessary infrastructure to manipulate the hashlist. This prepares
the code to use the same hashlist for alternative names introduced
later in this set.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko
2019-09-30 11:48:15 +02:00
committed by David S. Miller
parent 6958c97a48
commit ff92741270
2 changed files with 87 additions and 20 deletions
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10
include/linux/netdevice.h
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@@ -925,6 +925,12 @@ struct dev_ifalias {
struct devlink;
struct tlsdev_ops;
struct netdev_name_node {
struct hlist_node hlist;
struct net_device *dev;
const char *name;
};
/*
* This structure defines the management hooks for network devices.
* The following hooks can be defined; unless noted otherwise, they are
@@ -1564,7 +1570,7 @@ enum netdev_priv_flags {
* (i.e. as seen by users in the "Space.c" file). It is the name
* of the interface.
*
* @name_hlist: Device name hash chain, please keep it close to name[]
* @name_node: Name hashlist node
* @ifalias: SNMP alias
* @mem_end: Shared memory end
* @mem_start: Shared memory start
@@ -1774,7 +1780,7 @@ enum netdev_priv_flags {
struct net_device {
char name[IFNAMSIZ];
struct hlist_node name_hlist;
struct netdev_name_node *name_node;
struct dev_ifalias __rcu *ifalias;
/*
* I/O specific fields