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authorJesper Dangaard Brouer <brouer@redhat.com>2013-01-28 23:44:49 +0000
committerDavid S. Miller <davem@davemloft.net>2013-01-29 13:36:23 -0500
commit6e34a8b37aca63f109bf990d46131ee07206f5f1 (patch)
tree2daf8bc157035e3493636eea48db3805a2a92f3f /include/net/inet_frag.h
parent5f8e1e8b767bdb8e471d4f49612b88c606f8811e (diff)
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>
Diffstat (limited to 'include/net/inet_frag.h')
-rw-r--r--include/net/inet_frag.h9
1 files changed, 5 insertions, 4 deletions
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 54c1de781c68..8e4c42523f59 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -16,12 +16,11 @@ struct netns_frags {
};
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 @@ struct inet_frag_queue {
#define INET_FRAG_LAST_IN 1
u16 max_size;
+
+ struct netns_frags *net;
};
#define INETFRAGS_HASHSZ 64