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skbuff: Move definition of NETDEV_FRAG_PAGE_MAX_SIZE

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In order to address the fact that some devices cannot support the full 32K
frag size we need to have the value accessible somewhere so that we can use it
to do comparisons against what the device can support.  As such I am moving
the values out of skbuff.c and into skbuff.h.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2013-02-08 10:17:15 +00:00 committed by David S. Miller
parent bfb235d783
commit e5e6730588
2 changed files with 4 additions and 4 deletions
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4
include/linux/skbuff.h
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@ -1832,6 +1832,10 @@ static inline void __skb_queue_purge(struct sk_buff_head *list)
kfree_skb(skb); kfree_skb(skb);
} }
#define NETDEV_FRAG_PAGE_MAX_ORDER get_order(32768)
#define NETDEV_FRAG_PAGE_MAX_SIZE (PAGE_SIZE << NETDEV_FRAG_PAGE_MAX_ORDER)
#define NETDEV_PAGECNT_MAX_BIAS NETDEV_FRAG_PAGE_MAX_SIZE
extern void *netdev_alloc_frag(unsigned int fragsz); extern void *netdev_alloc_frag(unsigned int fragsz);
extern struct sk_buff *__netdev_alloc_skb(struct net_device *dev, extern struct sk_buff *__netdev_alloc_skb(struct net_device *dev,

4
net/core/skbuff.c
View File

@ -351,10 +351,6 @@ struct netdev_alloc_cache {
}; };
static DEFINE_PER_CPU(struct netdev_alloc_cache, netdev_alloc_cache); static DEFINE_PER_CPU(struct netdev_alloc_cache, netdev_alloc_cache);
#define NETDEV_FRAG_PAGE_MAX_ORDER get_order(32768)
#define NETDEV_FRAG_PAGE_MAX_SIZE (PAGE_SIZE << NETDEV_FRAG_PAGE_MAX_ORDER)
#define NETDEV_PAGECNT_MAX_BIAS NETDEV_FRAG_PAGE_MAX_SIZE
static void *__netdev_alloc_frag(unsigned int fragsz, gfp_t gfp_mask) static void *__netdev_alloc_frag(unsigned int fragsz, gfp_t gfp_mask)
{ {
struct netdev_alloc_cache *nc; struct netdev_alloc_cache *nc;