net: cacheline adjust struct inet_frag_queue
Fragmentation code cacheline adjusting of struct inet_frag_queue.
Take advantage of the size of struct timer_list, and move all but
spinlock_t lock, below the timer struct. On 64-bit 'lru_list',
'list' and 'refcnt', fits exactly into the next cacheline, and a
new cacheline starts at 'fragments'.
The netns_frags *net pointer is moved to the end of the struct,
because its used in a compare, with "next/close-by" elements of
which this struct is embedded into.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 54c1de7..8e4c425 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -16,12 +16,11 @@
};
struct inet_frag_queue {
- struct hlist_node list;
- struct netns_frags *net;
- struct list_head lru_list; /* lru list member */
spinlock_t lock;
- atomic_t refcnt;
struct timer_list timer; /* when will this queue expire? */
+ struct list_head lru_list; /* lru list member */
+ struct hlist_node list;
+ atomic_t refcnt;
struct sk_buff *fragments; /* list of received fragments */
struct sk_buff *fragments_tail;
ktime_t stamp;
@@ -34,6 +33,8 @@
#define INET_FRAG_LAST_IN 1
u16 max_size;
+
+ struct netns_frags *net;
};
#define INETFRAGS_HASHSZ 64