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This cleanup patchset includes the following patches:

Browse source 
- Fix revert dynamic lockdep key changes for batman-adv,
    by Sven Eckelmann
 
  - use rcu_replace_pointer() where appropriate, by Antonio Quartulli
 
  - Revert "disable ethtool link speed detection when auto negotiation
    off", by Sven Eckelmann
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Merge tag 'batadv-next-for-davem-20200526' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
This cleanup patchset includes the following patches:

 - Fix revert dynamic lockdep key changes for batman-adv,
   by Sven Eckelmann

 - use rcu_replace_pointer() where appropriate, by Antonio Quartulli

 - Revert "disable ethtool link speed detection when auto negotiation
   off", by Sven Eckelmann
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2020-05-26 15:19:29 -07:00
commit fb8ddaa915
5 changed files with 8 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
net/batman-adv/bat_v_elp.c
View file

@ -127,20 +127,7 @@ static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh)
rtnl_lock();
ret = __ethtool_get_link_ksettings(hard_iface->net_dev, &link_settings);
rtnl_unlock();
/* Virtual interface drivers such as tun / tap interfaces, VLAN, etc
* tend to initialize the interface throughput with some value for the
* sake of having a throughput number to export via ethtool. This
* exported throughput leaves batman-adv to conclude the interface
* throughput is genuine (reflecting reality), thus no measurements
* are necessary.
*
* Based on the observation that those interface types also tend to set
* the link auto-negotiation to 'off', batman-adv shall check this
* setting to differentiate between genuine link throughput information
* and placeholders installed by virtual interfaces.
*/
if (ret == 0 && link_settings.base.autoneg == AUTONEG_ENABLE) {
if (ret == 0) {
/* link characteristics might change over time */
if (link_settings.base.duplex == DUPLEX_FULL)
hard_iface->bat_v.flags |= BATADV_FULL_DUPLEX;

4
net/batman-adv/gateway_client.c
View file

@ -146,8 +146,8 @@ static void batadv_gw_select(struct batadv_priv *bat_priv,
if (new_gw_node)
kref_get(&new_gw_node->refcount);
curr_gw_node = rcu_dereference_protected(bat_priv->gw.curr_gw, 1);
rcu_assign_pointer(bat_priv->gw.curr_gw, new_gw_node);
curr_gw_node = rcu_replace_pointer(bat_priv->gw.curr_gw, new_gw_node,
true);
if (curr_gw_node)
batadv_gw_node_put(curr_gw_node);

4
net/batman-adv/hard-interface.c
View file

@ -473,8 +473,8 @@ static void batadv_primary_if_select(struct batadv_priv *bat_priv,
if (new_hard_iface)
kref_get(&new_hard_iface->refcount);
curr_hard_iface = rcu_dereference_protected(bat_priv->primary_if, 1);
rcu_assign_pointer(bat_priv->primary_if, new_hard_iface);
curr_hard_iface = rcu_replace_pointer(bat_priv->primary_if,
new_hard_iface, 1);
if (!new_hard_iface)
goto out;

4
net/batman-adv/routing.c
View file

@ -71,13 +71,13 @@ static void _batadv_update_route(struct batadv_priv *bat_priv,
* the code needs to ensure the curr_router variable contains a pointer
* to the replaced best neighbor.
*/
curr_router = rcu_dereference_protected(orig_ifinfo->router, true);
/* increase refcount of new best neighbor */
if (neigh_node)
kref_get(&neigh_node->refcount);
rcu_assign_pointer(orig_ifinfo->router, neigh_node);
curr_router = rcu_replace_pointer(orig_ifinfo->router, neigh_node,
true);
spin_unlock_bh(&orig_node->neigh_list_lock);
batadv_orig_ifinfo_put(orig_ifinfo);

1
net/batman-adv/soft-interface.c
View file

@ -22,6 +22,7 @@
#include <linux/kernel.h>
#include <linux/kref.h>
#include <linux/list.h>
#include <linux/lockdep.h>
#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <linux/percpu.h>