diff options
| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-06-24 04:27:30 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-06-26 12:35:06 +0200 |
| commit | 8644e1cddac2df86a67e3a407629d8416f8a3c5e (patch) | |
| tree | 0fc85dbd87c028d3a253b5b32714d5d392eff12b /src/compat/compat.h | |
| parent | 319b7f4a1344d826ad4e384119057ebf7e804458 (diff) | |
device: remove icmp conntrack hacks
This logic belongs upstream.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'src/compat/compat.h')
| -rw-r--r-- | src/compat/compat.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/compat/compat.h b/src/compat/compat.h index eb17c8e..159abb1 100644 --- a/src/compat/compat.h +++ b/src/compat/compat.h @@ -284,6 +284,37 @@ static inline u64 ktime_get_ns(void) #define inet_confirm_addr(a,b,c,d,e) inet_confirm_addr(b,c,d,e) #endif +/* https://lkml.org/lkml/2017/6/23/790 */ +#if IS_ENABLED(CONFIG_NF_CONNTRACK) +#include <linux/ip.h> +#include <linux/icmpv6.h> +#include <net/icmp.h> +#include <net/netfilter/nf_conntrack.h> +#include <net/netfilter/nf_nat_core.h> +static inline void new_icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info) +{ + enum ip_conntrack_info ctinfo; + struct nf_conn *ct = nf_ct_get(skb_in, &ctinfo); + if (skb_network_header(skb_in) < skb_in->head || (skb_network_header(skb_in) + sizeof(struct iphdr)) > skb_tail_pointer(skb_in)) + return; + if (ct) + ip_hdr(skb_in)->saddr = ct->tuplehash[0].tuple.src.u3.ip; + icmp_send(skb_in, type, code, info); +} +static inline void new_icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info) +{ + enum ip_conntrack_info ctinfo; + struct nf_conn *ct = nf_ct_get(skb, &ctinfo); + if (skb_network_header(skb) < skb->head || (skb_network_header(skb) + sizeof(struct ipv6hdr)) > skb_tail_pointer(skb)) + return; + if (ct) + ipv6_hdr(skb)->saddr = ct->tuplehash[0].tuple.src.u3.in6; + icmpv6_send(skb, type, code, info); +} +#define icmp_send(a,b,c,d) new_icmp_send(a,b,c,d) +#define icmpv6_send(a,b,c,d) new_icmpv6_send(a,b,c,d) +#endif + /* https://lkml.org/lkml/2015/6/12/415 */ #include <linux/netdevice.h> static inline struct net_device *netdev_pub(void *dev) |