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| author | Vlad Yasevich <vyasevich@gmail.com> | 2015-02-03 16:36:15 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-02-03 23:06:43 -0800 |
| commit | 0508c07f5e0c94f38afd5434e8b2a55b84553077 (patch) | |
| tree | 268267ccdf554b7872644c5d5b52d4fccb2757ed /include | |
| parent | 42b5212fee4f57907e9415b18fe19c13e65574bc (diff) | |
| download | linux-0508c07f5e0c94f38afd5434e8b2a55b84553077.tar.gz linux-0508c07f5e0c94f38afd5434e8b2a55b84553077.tar.bz2 linux-0508c07f5e0c94f38afd5434e8b2a55b84553077.zip | |
ipv6: Select fragment id during UFO segmentation if not set.
If the IPv6 fragment id has not been set and we perform
fragmentation due to UFO, select a new fragment id.
We now consider a fragment id of 0 as unset and if id selection
process returns 0 (after all the pertrubations), we set it to
0x80000000, thus giving us ample space not to create collisions
with the next packet we may have to fragment.
When doing UFO integrity checking, we also select the
fragment id if it has not be set yet. This is stored into
the skb_shinfo() thus allowing UFO to function correclty.
This patch also removes duplicate fragment id generation code
and moves ipv6_select_ident() into the header as it may be
used during GSO.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/ipv6.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 4292929392b0..9bf85d34c024 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -671,6 +671,9 @@ static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_add return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr)); } +u32 __ipv6_select_ident(u32 hashrnd, struct in6_addr *dst, + struct in6_addr *src); +void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt); void ipv6_proxy_select_ident(struct sk_buff *skb); int ip6_dst_hoplimit(struct dst_entry *dst); |