Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-05 03:21:32 +00:00
Code Issues Packages Projects Releases Wiki Activity

net: add RCU variant to search for netdev_adjacent link

Browse Source 
Currently we have only the RTNL flavour, however we can traverse it while
holding only RCU, so add the RCU search. Add an RCU variant that uses
list_head * as an argument, so that it can be universally used afterwards.

CC: "David S. Miller" <davem@davemloft.net>
CC: Eric Dumazet <edumazet@google.com>
CC: Jiri Pirko <jiri@resnulli.us>
CC: Alexander Duyck <alexander.h.duyck@intel.com>
CC: Cong Wang <amwang@redhat.com>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Veaceslav Falico 2013-09-25 09:20:08 +02:00 committed by David S. Miller
parent 2f268f129c
commit 5249dec738
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
net/core/dev.c
View File

@ -4380,6 +4380,19 @@ struct netdev_adjacent {
struct rcu_head rcu; struct rcu_head rcu;
}; };
static struct netdev_adjacent *__netdev_find_adj_rcu(struct net_device *dev,
struct net_device *adj_dev,
struct list_head *adj_list)
{
struct netdev_adjacent *adj;
list_for_each_entry_rcu(adj, adj_list, list) {
if (adj->dev == adj_dev)
return adj;
}
return NULL;
}
static struct netdev_adjacent *__netdev_find_adj(struct net_device *dev, static struct netdev_adjacent *__netdev_find_adj(struct net_device *dev,
struct net_device *adj_dev, struct net_device *adj_dev,
struct list_head *adj_list) struct list_head *adj_list)