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authorDavid S. Miller <davem@davemloft.net>2015-07-09 00:03:10 -0700
committerDavid S. Miller <davem@davemloft.net>2015-07-09 00:03:10 -0700
commitace15bbb39d7cdfa1f376badbc7e0633eed7d899 (patch)
tree1bb6c202bac16c491307ee05c0e0aa3abc5fa395 /net/bridge
parentc936835c1ec6f871f32c9b87a7708700320075b3 (diff)
parent86e8971800381c3a8d8d9327f83b1f97ccb04a4f (diff)
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for your net tree. This batch mostly comes with patches to address fallout from the previous merge window cycle, they are: 1) Use entry->state.hook_list from nf_queue() instead of the global nf_hooks which is not valid when used from NFPROTO_NETDEV, this should cause no problems though since we have no userspace queueing for that family, but let's fix this now for the sake of correctness. Patch from Eric W. Biederman. 2) Fix compilation breakage in bridge netfilter if CONFIG_NF_DEFRAG_IPV4 is not set, from Bernhard Thaler. 3) Use percpu jumpstack in arptables too, now that there's a single copy of the rule blob we can't store the return address there anymore. Patch from Florian Westphal. 4) Fix a skb leak in the xmit path of bridge netfilter, problem there since 2.6.37 although it should be not possible to hit invalid traffic there, also from Florian. 5) Eric Leblond reports that when loading a large ruleset with many missing modules after a fresh boot, nf_tables can take long time commit it. Fix this by processing the full batch until the end, even on missing modules, then abort only once and restart processing. 6) Add bridge netfilter files to the MAINTAINER files. 7) Fix a net_device refcount leak in the new IPV6 bridge netfilter code, from Julien Grall. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_netfilter_hooks.c16
-rw-r--r--net/bridge/br_netfilter_ipv6.c2
2 files changed, 12 insertions, 6 deletions
diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c
index d89f4fac0bc5..c8b9bcfe997e 100644
--- a/net/bridge/br_netfilter_hooks.c
+++ b/net/bridge/br_netfilter_hooks.c
@@ -111,7 +111,7 @@ static inline __be16 pppoe_proto(const struct sk_buff *skb)
/* largest possible L2 header, see br_nf_dev_queue_xmit() */
#define NF_BRIDGE_MAX_MAC_HEADER_LENGTH (PPPOE_SES_HLEN + ETH_HLEN)
-#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV4)
+#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV4) || IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
struct brnf_frag_data {
char mac[NF_BRIDGE_MAX_MAC_HEADER_LENGTH];
u8 encap_size;
@@ -694,6 +694,7 @@ static int br_nf_push_frag_xmit(struct sock *sk, struct sk_buff *skb)
}
#endif
+#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV4)
static int br_nf_ip_fragment(struct sock *sk, struct sk_buff *skb,
int (*output)(struct sock *, struct sk_buff *))
{
@@ -712,6 +713,7 @@ static int br_nf_ip_fragment(struct sock *sk, struct sk_buff *skb,
return ip_do_fragment(sk, skb, output);
}
+#endif
static unsigned int nf_bridge_mtu_reduction(const struct sk_buff *skb)
{
@@ -742,7 +744,7 @@ static int br_nf_dev_queue_xmit(struct sock *sk, struct sk_buff *skb)
struct brnf_frag_data *data;
if (br_validate_ipv4(skb))
- return NF_DROP;
+ goto drop;
IPCB(skb)->frag_max_size = nf_bridge->frag_max_size;
@@ -767,7 +769,7 @@ static int br_nf_dev_queue_xmit(struct sock *sk, struct sk_buff *skb)
struct brnf_frag_data *data;
if (br_validate_ipv6(skb))
- return NF_DROP;
+ goto drop;
IP6CB(skb)->frag_max_size = nf_bridge->frag_max_size;
@@ -782,12 +784,16 @@ static int br_nf_dev_queue_xmit(struct sock *sk, struct sk_buff *skb)
if (v6ops)
return v6ops->fragment(sk, skb, br_nf_push_frag_xmit);
- else
- return -EMSGSIZE;
+
+ kfree_skb(skb);
+ return -EMSGSIZE;
}
#endif
nf_bridge_info_free(skb);
return br_dev_queue_push_xmit(sk, skb);
+ drop:
+ kfree_skb(skb);
+ return 0;
}
/* PF_BRIDGE/POST_ROUTING ********************************************/
diff --git a/net/bridge/br_netfilter_ipv6.c b/net/bridge/br_netfilter_ipv6.c
index 6d12d2675c80..13b7d1e3d185 100644
--- a/net/bridge/br_netfilter_ipv6.c
+++ b/net/bridge/br_netfilter_ipv6.c
@@ -104,7 +104,7 @@ int br_validate_ipv6(struct sk_buff *skb)
{
const struct ipv6hdr *hdr;
struct net_device *dev = skb->dev;
- struct inet6_dev *idev = in6_dev_get(skb->dev);
+ struct inet6_dev *idev = __in6_dev_get(skb->dev);
u32 pkt_len;
u8 ip6h_len = sizeof(struct ipv6hdr);