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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2008-10-07 14:22:33 -0700
committerDavid S. Miller <davem@davemloft.net>2008-10-07 14:22:33 -0700
commit654bed16cf86a9ef94495d9e6131b7ff7840a3dd (patch)
tree7d64fdb8de3e893b1acf5f420890a503a4e0327f /net/core
parentc57943a1c96214ee68f3890bb6772841ffbfd606 (diff)
net: packet split receive api
Add some packet-split receive hooks. For one this allows to do NUMA node affine page allocs. Later on these hooks will be extended to do emergency reserve allocations for fragments. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/skbuff.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 8bd248a6487..7f7bb1a636d 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -263,6 +263,26 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev,
return skb;
}
+struct page *__netdev_alloc_page(struct net_device *dev, gfp_t gfp_mask)
+{
+ int node = dev->dev.parent ? dev_to_node(dev->dev.parent) : -1;
+ struct page *page;
+
+ page = alloc_pages_node(node, gfp_mask, 0);
+ return page;
+}
+EXPORT_SYMBOL(__netdev_alloc_page);
+
+void skb_add_rx_frag(struct sk_buff *skb, int i, struct page *page, int off,
+ int size)
+{
+ skb_fill_page_desc(skb, i, page, off, size);
+ skb->len += size;
+ skb->data_len += size;
+ skb->truesize += size;
+}
+EXPORT_SYMBOL(skb_add_rx_frag);
+
/**
* dev_alloc_skb - allocate an skbuff for receiving
* @length: length to allocate