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-rw-r--r--net/batman-adv/hard-interface.c3
-rw-r--r--net/batman-adv/main.c1
-rw-r--r--net/batman-adv/main.h1
-rw-r--r--net/batman-adv/netlink.c24
4 files changed, 19 insertions, 10 deletions
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 781c5b6e6e8e..508f4416dfc9 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -951,6 +951,7 @@ batadv_hardif_add_interface(struct net_device *net_dev)
batadv_check_known_mac_addr(hard_iface->net_dev);
kref_get(&hard_iface->refcount);
list_add_tail_rcu(&hard_iface->list, &batadv_hardif_list);
+ batadv_hardif_generation++;
return hard_iface;
@@ -993,6 +994,7 @@ void batadv_hardif_remove_interfaces(void)
list_for_each_entry_safe(hard_iface, hard_iface_tmp,
&batadv_hardif_list, list) {
list_del_rcu(&hard_iface->list);
+ batadv_hardif_generation++;
batadv_hardif_remove_interface(hard_iface);
}
rtnl_unlock();
@@ -1054,6 +1056,7 @@ static int batadv_hard_if_event(struct notifier_block *this,
case NETDEV_UNREGISTER:
case NETDEV_PRE_TYPE_CHANGE:
list_del_rcu(&hard_iface->list);
+ batadv_hardif_generation++;
batadv_hardif_remove_interface(hard_iface);
break;
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index c75e47826949..d1ed839fd32b 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -74,6 +74,7 @@
* list traversals just rcu-locked
*/
struct list_head batadv_hardif_list;
+unsigned int batadv_hardif_generation;
static int (*batadv_rx_handler[256])(struct sk_buff *skb,
struct batadv_hard_iface *recv_if);
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index b68a41190eb0..b572066325e4 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -247,6 +247,7 @@ static inline int batadv_print_vid(unsigned short vid)
}
extern struct list_head batadv_hardif_list;
+extern unsigned int batadv_hardif_generation;
extern unsigned char batadv_broadcast_addr[];
extern struct workqueue_struct *batadv_event_workqueue;
diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c
index 0d9459b69bdb..2dc3304cee54 100644
--- a/net/batman-adv/netlink.c
+++ b/net/batman-adv/netlink.c
@@ -29,11 +29,11 @@
#include <linux/if_ether.h>
#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/list.h>
#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <linux/printk.h>
-#include <linux/rculist.h>
-#include <linux/rcupdate.h>
+#include <linux/rtnetlink.h>
#include <linux/skbuff.h>
#include <linux/stddef.h>
#include <linux/types.h>
@@ -445,23 +445,27 @@ out:
* batadv_netlink_dump_hardif_entry() - Dump one hard interface into a message
* @msg: Netlink message to dump into
* @portid: Port making netlink request
- * @seq: Sequence number of netlink message
+ * @cb: Control block containing additional options
* @hard_iface: Hard interface to dump
*
* Return: error code, or 0 on success
*/
static int
-batadv_netlink_dump_hardif_entry(struct sk_buff *msg, u32 portid, u32 seq,
+batadv_netlink_dump_hardif_entry(struct sk_buff *msg, u32 portid,
+ struct netlink_callback *cb,
struct batadv_hard_iface *hard_iface)
{
struct net_device *net_dev = hard_iface->net_dev;
void *hdr;
- hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
+ hdr = genlmsg_put(msg, portid, cb->nlh->nlmsg_seq,
+ &batadv_netlink_family, NLM_F_MULTI,
BATADV_CMD_GET_HARDIFS);
if (!hdr)
return -EMSGSIZE;
+ genl_dump_check_consistent(cb, hdr);
+
if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
net_dev->ifindex) ||
nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
@@ -498,7 +502,6 @@ batadv_netlink_dump_hardifs(struct sk_buff *msg, struct netlink_callback *cb)
struct batadv_hard_iface *hard_iface;
int ifindex;
int portid = NETLINK_CB(cb->skb).portid;
- int seq = cb->nlh->nlmsg_seq;
int skip = cb->args[0];
int i = 0;
@@ -516,23 +519,24 @@ batadv_netlink_dump_hardifs(struct sk_buff *msg, struct netlink_callback *cb)
return -ENODEV;
}
- rcu_read_lock();
+ rtnl_lock();
+ cb->seq = batadv_hardif_generation << 1 | 1;
- list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
+ list_for_each_entry(hard_iface, &batadv_hardif_list, list) {
if (hard_iface->soft_iface != soft_iface)
continue;
if (i++ < skip)
continue;
- if (batadv_netlink_dump_hardif_entry(msg, portid, seq,
+ if (batadv_netlink_dump_hardif_entry(msg, portid, cb,
hard_iface)) {
i--;
break;
}
}
- rcu_read_unlock();
+ rtnl_unlock();
dev_put(soft_iface);