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authorDavid Miller <davem@davemloft.net>2015-04-05 22:19:04 -0400
committerDavid S. Miller <davem@davemloft.net>2015-04-07 15:25:55 -0400
commit7026b1ddb6b8d4e6ee33dc2bd06c0ca8746fa7ab (patch)
tree3e11ed0f186ea6066a3f7efecb88d85bc732ee51 /include/net
parent1c984f8a5df085bcf35364a8a870bd4db4da4ed3 (diff)
downloadop-kernel-dev-7026b1ddb6b8d4e6ee33dc2bd06c0ca8746fa7ab.zip
op-kernel-dev-7026b1ddb6b8d4e6ee33dc2bd06c0ca8746fa7ab.tar.gz
netfilter: Pass socket pointer down through okfn().
On the output paths in particular, we have to sometimes deal with two socket contexts. First, and usually skb->sk, is the local socket that generated the frame. And second, is potentially the socket used to control a tunneling socket, such as one the encapsulates using UDP. We do not want to disassociate skb->sk when encapsulating in order to fix this, because that would break socket memory accounting. The most extreme case where this can cause huge problems is an AF_PACKET socket transmitting over a vxlan device. We hit code paths doing checks that assume they are dealing with an ipv4 socket, but are actually operating upon the AF_PACKET one. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/dn_neigh.h6
-rw-r--r--include/net/ip.h3
-rw-r--r--include/net/ip6_route.h3
-rw-r--r--include/net/ipv6.h2
-rw-r--r--include/net/xfrm.h8
5 files changed, 12 insertions, 10 deletions
diff --git a/include/net/dn_neigh.h b/include/net/dn_neigh.h
index 0f26aa7..d042426 100644
--- a/include/net/dn_neigh.h
+++ b/include/net/dn_neigh.h
@@ -18,11 +18,11 @@ struct dn_neigh {
void dn_neigh_init(void);
void dn_neigh_cleanup(void);
-int dn_neigh_router_hello(struct sk_buff *skb);
-int dn_neigh_endnode_hello(struct sk_buff *skb);
+int dn_neigh_router_hello(struct sock *sk, struct sk_buff *skb);
+int dn_neigh_endnode_hello(struct sock *sk, struct sk_buff *skb);
void dn_neigh_pointopoint_hello(struct sk_buff *skb);
int dn_neigh_elist(struct net_device *dev, unsigned char *ptr, int n);
-int dn_to_neigh_output(struct sk_buff *skb);
+int dn_to_neigh_output(struct sock *sk, struct sk_buff *skb);
extern struct neigh_table dn_neigh_table;
diff --git a/include/net/ip.h b/include/net/ip.h
index 69cd9cb..d14af7e 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -108,7 +108,8 @@ int ip_local_deliver(struct sk_buff *skb);
int ip_mr_input(struct sk_buff *skb);
int ip_output(struct sock *sk, struct sk_buff *skb);
int ip_mc_output(struct sock *sk, struct sk_buff *skb);
-int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *));
+int ip_fragment(struct sock *sk, struct sk_buff *skb,
+ int (*output)(struct sock *, struct sk_buff *));
int ip_do_nat(struct sk_buff *skb);
void ip_send_check(struct iphdr *ip);
int __ip_local_out(struct sk_buff *skb);
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index eda131d..5e19206 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -170,7 +170,8 @@ static inline bool ipv6_anycast_destination(const struct sk_buff *skb)
return rt->rt6i_flags & RTF_ANYCAST;
}
-int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *));
+int ip6_fragment(struct sock *sk, struct sk_buff *skb,
+ int (*output)(struct sock *, struct sk_buff *));
static inline int ip6_skb_dst_mtu(struct sk_buff *skb)
{
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 65142e6..b6ae959 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -769,7 +769,7 @@ static inline u8 ip6_tclass(__be32 flowinfo)
int ipv6_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev);
-int ip6_rcv_finish(struct sk_buff *skb);
+int ip6_rcv_finish(struct sock *sk, struct sk_buff *skb);
/*
* upper-layer output functions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 461f835..36ac102 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -332,7 +332,7 @@ struct xfrm_state_afinfo {
int (*tmpl_sort)(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n);
int (*state_sort)(struct xfrm_state **dst, struct xfrm_state **src, int n);
int (*output)(struct sock *sk, struct sk_buff *skb);
- int (*output_finish)(struct sk_buff *skb);
+ int (*output_finish)(struct sock *sk, struct sk_buff *skb);
int (*extract_input)(struct xfrm_state *x,
struct sk_buff *skb);
int (*extract_output)(struct xfrm_state *x,
@@ -1503,7 +1503,7 @@ int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb);
int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type);
int xfrm_input_resume(struct sk_buff *skb, int nexthdr);
int xfrm_output_resume(struct sk_buff *skb, int err);
-int xfrm_output(struct sk_buff *skb);
+int xfrm_output(struct sock *sk, struct sk_buff *skb);
int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb);
void xfrm_local_error(struct sk_buff *skb, int mtu);
int xfrm4_extract_header(struct sk_buff *skb);
@@ -1524,7 +1524,7 @@ static inline int xfrm4_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi)
int xfrm4_extract_output(struct xfrm_state *x, struct sk_buff *skb);
int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb);
int xfrm4_output(struct sock *sk, struct sk_buff *skb);
-int xfrm4_output_finish(struct sk_buff *skb);
+int xfrm4_output_finish(struct sock *sk, struct sk_buff *skb);
int xfrm4_rcv_cb(struct sk_buff *skb, u8 protocol, int err);
int xfrm4_protocol_register(struct xfrm4_protocol *handler, unsigned char protocol);
int xfrm4_protocol_deregister(struct xfrm4_protocol *handler, unsigned char protocol);
@@ -1549,7 +1549,7 @@ __be32 xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr);
int xfrm6_extract_output(struct xfrm_state *x, struct sk_buff *skb);
int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb);
int xfrm6_output(struct sock *sk, struct sk_buff *skb);
-int xfrm6_output_finish(struct sk_buff *skb);
+int xfrm6_output_finish(struct sock *sk, struct sk_buff *skb);
int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
u8 **prevhdr);
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