While looking for a place to add a new bitfield in ipv6_pinfo,
I've found a 32 bit hole (in 64 bit mode) at the beginning of the struct.
Since dst_cookie is used in the output fastpath, I've moved this field to
fill the hole. The original place of dst_cookie is now empty, but
can become a place to add further fields to the struct.
Signed-off-by: Balazs Scheidler <bazsi@xxxxxxxxxx>
---
include/linux/ipv6.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index c662efa..be4c9c6 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -285,6 +285,7 @@ struct ipv6_pinfo {
struct in6_addr saddr;
struct in6_addr rcv_saddr;
struct in6_addr daddr;
+ __u32 dst_cookie;
struct in6_pktinfo sticky_pktinfo;
struct in6_addr *daddr_cache;
#ifdef CONFIG_IPV6_SUBTREES
@@ -348,7 +349,7 @@ struct ipv6_pinfo {
*/
__u8 tclass;
- __u32 dst_cookie;
+ /* 32 bits hole on 64 bit platforms */
struct ipv6_mc_socklist *ipv6_mc_list;
struct ipv6_ac_socklist *ipv6_ac_list;
--
1.6.0.4
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