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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>
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Alexander Duyck authored and David S. Miller committed Feb 8, 2013
1 parent bfb235d commit e5e6730
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Showing 2 changed files with 4 additions and 4 deletions.
4 changes: 4 additions & 0 deletions include/linux/skbuff.h
Original file line number Diff line number Diff line change
Expand Up @@ -1832,6 +1832,10 @@ static inline void __skb_queue_purge(struct sk_buff_head *list)
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 struct sk_buff *__netdev_alloc_skb(struct net_device *dev,
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4 changes: 0 additions & 4 deletions net/core/skbuff.c
Original file line number Diff line number Diff line change
Expand Up @@ -351,10 +351,6 @@ struct 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)
{
struct netdev_alloc_cache *nc;
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