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authorDavid S. Miller <davem@davemloft.net>2011-07-14 07:53:20 -0700
committerDavid S. Miller <davem@davemloft.net>2011-07-14 07:53:20 -0700
commitf6b72b6217f8c24f2a54988e58af858b4e66024d (patch)
treec59d5adcf9bb226db6f602c5078106052524cfea /include/net
parent390fd0b388e4f85549e5d60bdeb21364b344d9b9 (diff)
downloadlinux-f6b72b6217f8c24f2a54988e58af858b4e66024d.tar.bz2
net: Embed hh_cache inside of struct neighbour.
Now that there is a one-to-one correspondance between neighbour and hh_cache entries, we no longer need: 1) dynamic allocation 2) attachment to dst->hh 3) refcounting Initialization of the hh_cache entry is indicated by hh_len being non-zero, and such initialization is always done with the neighbour's lock held as a writer. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/dst.h18
-rw-r--r--include/net/neighbour.h2
2 files changed, 10 insertions, 10 deletions
diff --git a/include/net/dst.h b/include/net/dst.h
index e12ddfb9eb16..0dd7ccbc0dd5 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -38,7 +38,6 @@ struct dst_entry {
unsigned long expires;
struct dst_entry *path;
struct neighbour *neighbour;
- struct hh_cache *hh;
#ifdef CONFIG_XFRM
struct xfrm_state *xfrm;
#else
@@ -47,6 +46,14 @@ struct dst_entry {
int (*input)(struct sk_buff*);
int (*output)(struct sk_buff*);
+ int flags;
+#define DST_HOST 0x0001
+#define DST_NOXFRM 0x0002
+#define DST_NOPOLICY 0x0004
+#define DST_NOHASH 0x0008
+#define DST_NOCACHE 0x0010
+#define DST_NOCOUNT 0x0020
+
short error;
short obsolete;
unsigned short header_len; /* more space at head required */
@@ -62,7 +69,7 @@ struct dst_entry {
* (L1_CACHE_SIZE would be too much)
*/
#ifdef CONFIG_64BIT
- long __pad_to_align_refcnt[1];
+ long __pad_to_align_refcnt[2];
#endif
/*
* __refcnt wants to be on a different cache line from
@@ -71,13 +78,6 @@ struct dst_entry {
atomic_t __refcnt; /* client references */
int __use;
unsigned long lastuse;
- int flags;
-#define DST_HOST 0x0001
-#define DST_NOXFRM 0x0002
-#define DST_NOPOLICY 0x0004
-#define DST_NOHASH 0x0008
-#define DST_NOCACHE 0x0010
-#define DST_NOCOUNT 0x0020
union {
struct dst_entry *next;
struct rtable __rcu *rt_next;
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 6fe8c2cd5acb..bd8f9f09ab5c 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -108,7 +108,7 @@ struct neighbour {
__u8 dead;
seqlock_t ha_lock;
unsigned char ha[ALIGN(MAX_ADDR_LEN, sizeof(unsigned long))];
- struct hh_cache *hh;
+ struct hh_cache hh;
int (*output)(struct sk_buff *skb);
const struct neigh_ops *ops;
struct rcu_head rcu;