summaryrefslogtreecommitdiff
path: root/net
diff options
context:
space:
mode:
Diffstat (limited to 'net')
-rw-r--r--net/core/drop_monitor.c33
1 files changed, 24 insertions, 9 deletions
diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index 252e155c837b..38d39b028b65 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -80,6 +80,7 @@ static struct sk_buff *reset_per_cpu_data(struct per_cpu_dm_data *data)
struct nlattr *nla;
struct sk_buff *skb;
unsigned long flags;
+ void *msg_header;
al = sizeof(struct net_dm_alert_msg);
al += dm_hit_limit * sizeof(struct net_dm_drop_point);
@@ -87,17 +88,31 @@ static struct sk_buff *reset_per_cpu_data(struct per_cpu_dm_data *data)
skb = genlmsg_new(al, GFP_KERNEL);
- if (skb) {
- genlmsg_put(skb, 0, 0, &net_drop_monitor_family,
- 0, NET_DM_CMD_ALERT);
- nla = nla_reserve(skb, NLA_UNSPEC,
- sizeof(struct net_dm_alert_msg));
- msg = nla_data(nla);
- memset(msg, 0, al);
- } else {
- mod_timer(&data->send_timer, jiffies + HZ / 10);
+ if (!skb)
+ goto err;
+
+ msg_header = genlmsg_put(skb, 0, 0, &net_drop_monitor_family,
+ 0, NET_DM_CMD_ALERT);
+ if (!msg_header) {
+ nlmsg_free(skb);
+ skb = NULL;
+ goto err;
+ }
+ nla = nla_reserve(skb, NLA_UNSPEC,
+ sizeof(struct net_dm_alert_msg));
+ if (!nla) {
+ nlmsg_free(skb);
+ skb = NULL;
+ goto err;
}
+ msg = nla_data(nla);
+ memset(msg, 0, al);
+ genlmsg_end(skb, msg_header);
+ goto out;
+err:
+ mod_timer(&data->send_timer, jiffies + HZ / 10);
+out:
spin_lock_irqsave(&data->lock, flags);
swap(data->skb, skb);
spin_unlock_irqrestore(&data->lock, flags);