diff options
author | Maxime Ripard <maxime@cerno.tech> | 2020-02-17 12:34:34 +0300 |
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committer | Maxime Ripard <maxime@cerno.tech> | 2020-02-17 12:34:34 +0300 |
commit | 28f2aff1caa4997f58ca31179cad1b4a84a62827 (patch) | |
tree | 69fb4b0a752f3660ce022a4313f8c7b276bbcceb /net/ipv6/ip6_icmp.c | |
parent | 3e8a3844fefbaad911c596f02dd48c39188ffa81 (diff) | |
parent | 11a48a5a18c63fd7621bb050228cebf13566e4d8 (diff) | |
download | linux-28f2aff1caa4997f58ca31179cad1b4a84a62827.tar.xz |
Merge v5.6-rc2 into drm-misc-next
Lyude needs some patches in 5.6-rc2 and we didn't bring drm-misc-next
forward yet, so it looks like a good occasion.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'net/ipv6/ip6_icmp.c')
-rw-r--r-- | net/ipv6/ip6_icmp.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/net/ipv6/ip6_icmp.c b/net/ipv6/ip6_icmp.c index 02045494c24c..e0086758b6ee 100644 --- a/net/ipv6/ip6_icmp.c +++ b/net/ipv6/ip6_icmp.c @@ -45,4 +45,38 @@ out: rcu_read_unlock(); } EXPORT_SYMBOL(icmpv6_send); + +#if IS_ENABLED(CONFIG_NF_NAT) +#include <net/netfilter/nf_conntrack.h> +void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info) +{ + struct sk_buff *cloned_skb = NULL; + enum ip_conntrack_info ctinfo; + struct in6_addr orig_ip; + struct nf_conn *ct; + + ct = nf_ct_get(skb_in, &ctinfo); + if (!ct || !(ct->status & IPS_SRC_NAT)) { + icmpv6_send(skb_in, type, code, info); + return; + } + + if (skb_shared(skb_in)) + skb_in = cloned_skb = skb_clone(skb_in, GFP_ATOMIC); + + if (unlikely(!skb_in || skb_network_header(skb_in) < skb_in->head || + (skb_network_header(skb_in) + sizeof(struct ipv6hdr)) > + skb_tail_pointer(skb_in) || skb_ensure_writable(skb_in, + skb_network_offset(skb_in) + sizeof(struct ipv6hdr)))) + goto out; + + orig_ip = ipv6_hdr(skb_in)->saddr; + ipv6_hdr(skb_in)->saddr = ct->tuplehash[0].tuple.src.u3.in6; + icmpv6_send(skb_in, type, code, info); + ipv6_hdr(skb_in)->saddr = orig_ip; +out: + consume_skb(cloned_skb); +} +EXPORT_SYMBOL(icmpv6_ndo_send); +#endif #endif |