Hi Joe,
On Wed, Dec 02, 2015 at 11:53:46PM -0800, Joe Stringer wrote:
> From: Joe Stringer <joestrin...@nicira.com>
>
> IPv6 fragmentation functionality is not exported by most kernels, so
> backport this code from the upstream 4.3 development tree.
>
> Signed-off-by: Joe Stringer <joestrin...@nicira.com>
[snip]
> diff --git a/datapath/linux/compat/ip6_output.c
> b/datapath/linux/compat/ip6_output.c
> new file mode 100644
> index 000000000000..9d2fe46ef7ef
> --- /dev/null
> +++ b/datapath/linux/compat/ip6_output.c
[snip]
> +static u32 __ipv6_select_ident(struct net *net, u32 hashrnd,
> + const struct in6_addr *dst,
> + const struct in6_addr *src)
> +{
> + u32 hash, id;
> +
> + hash = __ipv6_addr_jhash(dst, hashrnd);
> + hash = __ipv6_addr_jhash(src, hash);
> + hash ^= net_hash_mix(net);
> +
> + /* Treat id of 0 as unset and if we get 0 back from ip_idents_reserve,
> + * set the hight order instead thus minimizing possible future
> + * collisions.
> + */
> + id = rpl_ip_idents_reserve(hash, 1);
> + if (unlikely(!id))
> + id = 1 << 31;
> +
> + return id;
> +}
In Linux v3.19 and v3.19.1 (but not v3.19.2+) __ipv6_select_ident was not
static and is declared in ipv6.h. I believe it is because of that that I am
seeing the following build error.
/home/horms/projects/openvswitch/openvswitch2/datapath/linux/ip6_output.c:93:12:
error: conflicting types for ‘__ipv6_select_ident’
static u32 __ipv6_select_ident(struct net *net, u32 hashrnd,
[snip]
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