Re: [PATCH net-next 4/5] ipv6: Compute multipath hash for sent ICMP errors from offending packet

[David Miller]

From: Jakub Sitnicki <jkbs@xxxxxxxxxx>
Date: Mon, 24 Oct 2016 11:28:51 +0200

> diff --git a/include/linux/icmpv6.h b/include/linux/icmpv6.h
> index 57086e9..6282e03 100644
> --- a/include/linux/icmpv6.h
> +++ b/include/linux/icmpv6.h
> @@ -45,4 +45,6 @@ extern void				icmpv6_flow_init(struct sock *sk,
>  							 const struct in6_addr *saddr,
>  							 const struct in6_addr *daddr,
>  							 int oif);
> +struct ipv6hdr;
> +extern u32				icmpv6_multipath_hash(const struct ipv6hdr *iph);
>  #endif

We do not use "extern" in external function declarations in header file any more.