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Diffstat (limited to 'net')
-rw-r--r--net/core/dev.c1
-rw-r--r--net/core/skbuff.c7
-rw-r--r--net/ipv6/addrconf.c14
-rw-r--r--net/mac80211/cfg.c2
-rw-r--r--net/sched/act_mirred.c43
5 files changed, 56 insertions, 11 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 0ea10f849be8..1f466e82ac33 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1488,6 +1488,7 @@ static inline void net_timestamp_check(struct sk_buff *skb)
int dev_forward_skb(struct net_device *dev, struct sk_buff *skb)
{
skb_orphan(skb);
+ nf_reset(skb);
if (!(dev->flags & IFF_UP) ||
(skb->len > (dev->mtu + dev->hard_header_len))) {
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 34432b4e96bb..ce88293a34e2 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -843,7 +843,9 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
skb->network_header += off;
if (skb_mac_header_was_set(skb))
skb->mac_header += off;
- skb->csum_start += nhead;
+ /* Only adjust this if it actually is csum_start rather than csum */
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
+ skb->csum_start += nhead;
skb->cloned = 0;
skb->hdr_len = 0;
skb->nohdr = 0;
@@ -930,7 +932,8 @@ struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
copy_skb_header(n, skb);
off = newheadroom - oldheadroom;
- n->csum_start += off;
+ if (n->ip_summed == CHECKSUM_PARTIAL)
+ n->csum_start += off;
#ifdef NET_SKBUFF_DATA_USES_OFFSET
n->transport_header += off;
n->network_header += off;
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e1a698df5706..784f34d11fdd 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1760,7 +1760,10 @@ static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
idev = ipv6_find_idev(dev);
if (!idev)
- return NULL;
+ return ERR_PTR(-ENOBUFS);
+
+ if (idev->cnf.disable_ipv6)
+ return ERR_PTR(-EACCES);
/* Add default multicast route */
addrconf_add_mroute(dev);
@@ -2129,8 +2132,9 @@ static int inet6_addr_add(struct net *net, int ifindex, struct in6_addr *pfx,
if (!dev)
return -ENODEV;
- if ((idev = addrconf_add_dev(dev)) == NULL)
- return -ENOBUFS;
+ idev = addrconf_add_dev(dev);
+ if (IS_ERR(idev))
+ return PTR_ERR(idev);
scope = ipv6_addr_scope(pfx);
@@ -2377,7 +2381,7 @@ static void addrconf_dev_config(struct net_device *dev)
}
idev = addrconf_add_dev(dev);
- if (idev == NULL)
+ if (IS_ERR(idev))
return;
memset(&addr, 0, sizeof(struct in6_addr));
@@ -2468,7 +2472,7 @@ static void addrconf_ip6_tnl_config(struct net_device *dev)
ASSERT_RTNL();
idev = addrconf_add_dev(dev);
- if (!idev) {
+ if (IS_ERR(idev)) {
printk(KERN_DEBUG "init ip6-ip6: add_dev failed\n");
return;
}
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index c7000a6ca379..67ee34f57df7 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -632,7 +632,7 @@ static void ieee80211_send_layer2_update(struct sta_info *sta)
skb->dev = sta->sdata->dev;
skb->protocol = eth_type_trans(skb, sta->sdata->dev);
memset(skb->cb, 0, sizeof(skb->cb));
- netif_rx(skb);
+ netif_rx_ni(skb);
}
static void sta_apply_parameters(struct ieee80211_local *local,
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index c0b6863e3b87..1980b71c283f 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -33,6 +33,7 @@
static struct tcf_common *tcf_mirred_ht[MIRRED_TAB_MASK + 1];
static u32 mirred_idx_gen;
static DEFINE_RWLOCK(mirred_lock);
+static LIST_HEAD(mirred_list);
static struct tcf_hashinfo mirred_hash_info = {
.htab = tcf_mirred_ht,
@@ -47,7 +48,9 @@ static inline int tcf_mirred_release(struct tcf_mirred *m, int bind)
m->tcf_bindcnt--;
m->tcf_refcnt--;
if(!m->tcf_bindcnt && m->tcf_refcnt <= 0) {
- dev_put(m->tcfm_dev);
+ list_del(&m->tcfm_list);
+ if (m->tcfm_dev)
+ dev_put(m->tcfm_dev);
tcf_hash_destroy(&m->common, &mirred_hash_info);
return 1;
}
@@ -134,8 +137,10 @@ static int tcf_mirred_init(struct nlattr *nla, struct nlattr *est,
m->tcfm_ok_push = ok_push;
}
spin_unlock_bh(&m->tcf_lock);
- if (ret == ACT_P_CREATED)
+ if (ret == ACT_P_CREATED) {
+ list_add(&m->tcfm_list, &mirred_list);
tcf_hash_insert(pc, &mirred_hash_info);
+ }
return ret;
}
@@ -162,9 +167,14 @@ static int tcf_mirred(struct sk_buff *skb, struct tc_action *a,
m->tcf_tm.lastuse = jiffies;
dev = m->tcfm_dev;
+ if (!dev) {
+ printk_once(KERN_NOTICE "tc mirred: target device is gone\n");
+ goto out;
+ }
+
if (!(dev->flags & IFF_UP)) {
if (net_ratelimit())
- pr_notice("tc mirred to Houston: device %s is gone!\n",
+ pr_notice("tc mirred to Houston: device %s is down\n",
dev->name);
goto out;
}
@@ -232,6 +242,28 @@ nla_put_failure:
return -1;
}
+static int mirred_device_event(struct notifier_block *unused,
+ unsigned long event, void *ptr)
+{
+ struct net_device *dev = ptr;
+ struct tcf_mirred *m;
+
+ if (event == NETDEV_UNREGISTER)
+ list_for_each_entry(m, &mirred_list, tcfm_list) {
+ if (m->tcfm_dev == dev) {
+ dev_put(dev);
+ m->tcfm_dev = NULL;
+ }
+ }
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block mirred_device_notifier = {
+ .notifier_call = mirred_device_event,
+};
+
+
static struct tc_action_ops act_mirred_ops = {
.kind = "mirred",
.hinfo = &mirred_hash_info,
@@ -252,12 +284,17 @@ MODULE_LICENSE("GPL");
static int __init mirred_init_module(void)
{
+ int err = register_netdevice_notifier(&mirred_device_notifier);
+ if (err)
+ return err;
+
pr_info("Mirror/redirect action on\n");
return tcf_register_action(&act_mirred_ops);
}
static void __exit mirred_cleanup_module(void)
{
+ unregister_netdevice_notifier(&mirred_device_notifier);
tcf_unregister_action(&act_mirred_ops);
}
generated by cgit v1.2.3 (git 2.0.4) at 2025-10-31 07:34:48 +0000