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This feature/cleanup patchset includes the following patches:

Browse Source 
- bump version strings, by Simon Wunderlich
 
  - Simplify batadv_v_ogm_aggr_list_free using skb_queue_purge,
    by Christophe Jaillet
 
  - Replace aggr_list_lock with lock free skb handlers,
    by Christophe Jaillet
 
  - explicitly mark fallthrough cases, by Sven Eckelmann
 
  - Drop lockdep.h include from soft-interface.c, by Sven Eckelmann
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Merge tag 'batadv-next-for-davem-20191105' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

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

 - bump version strings, by Simon Wunderlich

 - Simplify batadv_v_ogm_aggr_list_free using skb_queue_purge,
   by Christophe Jaillet

 - Replace aggr_list_lock with lock free skb handlers,
   by Christophe Jaillet

 - explicitly mark fallthrough cases, by Sven Eckelmann

 - Drop lockdep.h include from soft-interface.c, by Sven Eckelmann
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2019-11-05 18:33:05 -08:00
commit d673f56358
6 changed files with 19 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
net/batman-adv/bat_v.c
View File

@ -1085,7 +1085,6 @@ void batadv_v_hardif_init(struct batadv_hard_iface *hard_iface)
hard_iface->bat_v.aggr_len = 0;
skb_queue_head_init(&hard_iface->bat_v.aggr_list);
spin_lock_init(&hard_iface->bat_v.aggr_list_lock);
INIT_DELAYED_WORK(&hard_iface->bat_v.aggr_wq,
batadv_v_ogm_aggr_work);
}

34
net/batman-adv/bat_v_ogm.c
View File

@ -152,7 +152,7 @@ static unsigned int batadv_v_ogm_len(struct sk_buff *skb)
* @skb: the OGM to check
* @hard_iface: the interface to use to send the OGM
*
* Caller needs to hold the hard_iface->bat_v.aggr_list_lock.
* Caller needs to hold the hard_iface->bat_v.aggr_list.lock.
*
* Return: True, if the given OGMv2 packet still fits, false otherwise.
*/
@ -163,7 +163,7 @@ static bool batadv_v_ogm_queue_left(struct sk_buff *skb,
BATADV_MAX_AGGREGATION_BYTES);
unsigned int ogm_len = batadv_v_ogm_len(skb);
lockdep_assert_held(&hard_iface->bat_v.aggr_list_lock);
lockdep_assert_held(&hard_iface->bat_v.aggr_list.lock);
return hard_iface->bat_v.aggr_len + ogm_len <= max;
}
@ -174,17 +174,13 @@ static bool batadv_v_ogm_queue_left(struct sk_buff *skb,
*
* Empties the OGMv2 aggregation queue and frees all the skbs it contained.
*
* Caller needs to hold the hard_iface->bat_v.aggr_list_lock.
* Caller needs to hold the hard_iface->bat_v.aggr_list.lock.
*/
static void batadv_v_ogm_aggr_list_free(struct batadv_hard_iface *hard_iface)
{
struct sk_buff *skb;
lockdep_assert_held(&hard_iface->bat_v.aggr_list_lock);
while ((skb = skb_dequeue(&hard_iface->bat_v.aggr_list)))
kfree_skb(skb);
lockdep_assert_held(&hard_iface->bat_v.aggr_list.lock);
__skb_queue_purge(&hard_iface->bat_v.aggr_list);
hard_iface->bat_v.aggr_len = 0;
}
@ -197,7 +193,7 @@ static void batadv_v_ogm_aggr_list_free(struct batadv_hard_iface *hard_iface)
*
* The aggregation queue is empty after this call.
*
* Caller needs to hold the hard_iface->bat_v.aggr_list_lock.
* Caller needs to hold the hard_iface->bat_v.aggr_list.lock.
*/
static void batadv_v_ogm_aggr_send(struct batadv_hard_iface *hard_iface)
{
@ -206,7 +202,7 @@ static void batadv_v_ogm_aggr_send(struct batadv_hard_iface *hard_iface)
unsigned int ogm_len;
struct sk_buff *skb;
lockdep_assert_held(&hard_iface->bat_v.aggr_list_lock);
lockdep_assert_held(&hard_iface->bat_v.aggr_list.lock);
if (!aggr_len)
return;
@ -220,7 +216,7 @@ static void batadv_v_ogm_aggr_send(struct batadv_hard_iface *hard_iface)
skb_reserve(skb_aggr, ETH_HLEN + NET_IP_ALIGN);
skb_reset_network_header(skb_aggr);
while ((skb = skb_dequeue(&hard_iface->bat_v.aggr_list))) {
while ((skb = __skb_dequeue(&hard_iface->bat_v.aggr_list))) {
hard_iface->bat_v.aggr_len -= batadv_v_ogm_len(skb);
ogm_len = batadv_v_ogm_len(skb);
@ -247,13 +243,13 @@ static void batadv_v_ogm_queue_on_if(struct sk_buff *skb,
return;
}
spin_lock_bh(&hard_iface->bat_v.aggr_list_lock);
spin_lock_bh(&hard_iface->bat_v.aggr_list.lock);
if (!batadv_v_ogm_queue_left(skb, hard_iface))
batadv_v_ogm_aggr_send(hard_iface);
hard_iface->bat_v.aggr_len += batadv_v_ogm_len(skb);
skb_queue_tail(&hard_iface->bat_v.aggr_list, skb);
spin_unlock_bh(&hard_iface->bat_v.aggr_list_lock);
__skb_queue_tail(&hard_iface->bat_v.aggr_list, skb);
spin_unlock_bh(&hard_iface->bat_v.aggr_list.lock);
}
/**
@ -392,9 +388,9 @@ void batadv_v_ogm_aggr_work(struct work_struct *work)
batv = container_of(work, struct batadv_hard_iface_bat_v, aggr_wq.work);
hard_iface = container_of(batv, struct batadv_hard_iface, bat_v);
spin_lock_bh(&hard_iface->bat_v.aggr_list_lock);
spin_lock_bh(&hard_iface->bat_v.aggr_list.lock);
batadv_v_ogm_aggr_send(hard_iface);
spin_unlock_bh(&hard_iface->bat_v.aggr_list_lock);
spin_unlock_bh(&hard_iface->bat_v.aggr_list.lock);
batadv_v_ogm_start_queue_timer(hard_iface);
}
@ -425,9 +421,9 @@ void batadv_v_ogm_iface_disable(struct batadv_hard_iface *hard_iface)
{
cancel_delayed_work_sync(&hard_iface->bat_v.aggr_wq);
spin_lock_bh(&hard_iface->bat_v.aggr_list_lock);
spin_lock_bh(&hard_iface->bat_v.aggr_list.lock);
batadv_v_ogm_aggr_list_free(hard_iface);
spin_unlock_bh(&hard_iface->bat_v.aggr_list_lock);
spin_unlock_bh(&hard_iface->bat_v.aggr_list.lock);
}
/**

2
net/batman-adv/main.h
View File

@ -13,7 +13,7 @@
#define BATADV_DRIVER_DEVICE "batman-adv"
#ifndef BATADV_SOURCE_VERSION
#define BATADV_SOURCE_VERSION "2019.4"
#define BATADV_SOURCE_VERSION "2019.5"
#endif
/* B.A.T.M.A.N. parameters */

2
net/batman-adv/multicast.c
View File

@ -1421,7 +1421,7 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
if (*orig)
return BATADV_FORW_SINGLE;
/* fall through */
fallthrough;
case 0:
return BATADV_FORW_NONE;
default:

5
net/batman-adv/soft-interface.c
View File

@ -22,7 +22,6 @@
#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>
@ -230,7 +229,7 @@ static netdev_tx_t batadv_interface_tx(struct sk_buff *skb,
break;
}
/* fall through */
fallthrough;
case ETH_P_BATMAN:
goto dropped;
}
@ -455,7 +454,7 @@ void batadv_interface_rx(struct net_device *soft_iface,
if (vhdr->h_vlan_encapsulated_proto != htons(ETH_P_BATMAN))
break;
/* fall through */
fallthrough;
case ETH_P_BATMAN:
goto dropped;
}

3
net/batman-adv/types.h
View File

@ -130,9 +130,6 @@ struct batadv_hard_iface_bat_v {
/** @aggr_len: size of the OGM aggregate (excluding ethernet header) */
unsigned int aggr_len;
/** @aggr_list_lock: protects aggr_list */
spinlock_t aggr_list_lock;
/**
* @throughput_override: throughput override to disable link
* auto-detection