diff options
Diffstat (limited to 'include/net/dst.h')
| -rw-r--r-- | include/net/dst.h | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/include/net/dst.h b/include/net/dst.h index 8a8b71e5f3f..6c778799bf1 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -59,8 +59,11 @@ struct dst_entry struct neighbour *neighbour; struct hh_cache *hh; +#ifdef CONFIG_XFRM struct xfrm_state *xfrm; - +#else + void *__pad1; +#endif int (*input)(struct sk_buff*); int (*output)(struct sk_buff*); @@ -70,8 +73,20 @@ struct dst_entry #ifdef CONFIG_NET_CLS_ROUTE __u32 tclassid; +#else + __u32 __pad2; #endif + + /* + * Align __refcnt to a 64 bytes alignment + * (L1_CACHE_SIZE would be too much) + */ +#ifdef CONFIG_64BIT + long __pad_to_align_refcnt[2]; +#else + long __pad_to_align_refcnt[1]; +#endif /* * __refcnt wants to be on a different cache line from * input/output/ops or performance tanks badly @@ -103,7 +118,6 @@ struct dst_ops void (*link_failure)(struct sk_buff *); void (*update_pmtu)(struct dst_entry *dst, u32 mtu); int (*local_out)(struct sk_buff *skb); - int entry_size; atomic_t entries; struct kmem_cache *kmem_cachep; @@ -157,6 +171,11 @@ dst_metric_locked(struct dst_entry *dst, int metric) static inline void dst_hold(struct dst_entry * dst) { + /* + * If your kernel compilation stops here, please check + * __pad_to_align_refcnt declaration in struct dst_entry + */ + BUILD_BUG_ON(offsetof(struct dst_entry, __refcnt) & 63); atomic_inc(&dst->__refcnt); } |