revert conntrack optimization, as it's broken on arm

SVN-Revision: 10987

diff --git a/target/linux/generic-2.6/patches-2.6.25/950-revert_conntrack_optimization.patch b/target/linux/generic-2.6/patches-2.6.25/950-revert_conntrack_optimization.patch
new file mode 100644 (file)
index 0000000..c146809
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.25/950-revert_conntrack_optimization.patch
@@ -0,0 +1,29 @@
+--- linux-2.6.25/net/netfilter/nf_conntrack_core.c     2008-04-17 04:49:44.000000000 +0200
++++ linux-2.6.25-owrt/net/netfilter/nf_conntrack_core.c        2008-04-30 12:36:55.000000000 +0200
+@@ -73,19 +73,15 @@
+ static u_int32_t __hash_conntrack(const struct nf_conntrack_tuple *tuple,
+                                 unsigned int size, unsigned int rnd)
+ {
+-      unsigned int n;
+-      u_int32_t h;
++      unsigned int a, b;
+ 
+-      /* The direction must be ignored, so we hash everything up to the
+-       * destination ports (which is a multiple of 4) and treat the last
+-       * three bytes manually.
+-       */
+-      n = (sizeof(tuple->src) + sizeof(tuple->dst.u3)) / sizeof(u32);
+-      h = jhash2((u32 *)tuple, n,
+-                 rnd ^ (((__force __u16)tuple->dst.u.all << 16) |
+-                        tuple->dst.protonum));
++      a = jhash2(tuple->src.u3.all, ARRAY_SIZE(tuple->src.u3.all),
++                 (tuple->src.l3num << 16) | tuple->dst.protonum);
++      b = jhash2(tuple->dst.u3.all, ARRAY_SIZE(tuple->dst.u3.all),
++                 ((__force __u16)tuple->src.u.all << 16) |
++                  (__force __u16)tuple->dst.u.all);
+ 
+-      return ((u64)h * size) >> 32;
++      return ((u64)jhash_2words(a, b, rnd) * size) >> 32;
+ }
+ 
+ static inline u_int32_t hash_conntrack(const struct nf_conntrack_tuple *tuple)