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| author | David S. Miller <davem@davemloft.net> | 2014-12-10 21:32:02 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-12-10 21:32:02 +0300 |
| commit | 7dbea3e8662eb491e9da109cf8ffc372e160fe9a (patch) | |
| tree | e69f89b43fa65a1f4279bc6aa7dc068c0817c208 /include | |
| parent | 6e5f59aacbf9527dfe425541c78cb8c56623e7eb (diff) | |
| parent | 45abfb1069e4c365f6c1e2fc97c5927272725bfa (diff) | |
| download | linux-7dbea3e8662eb491e9da109cf8ffc372e160fe9a.tar.xz | |
Merge branch 'napi_page_frags'
Alexander Duyck says:
====================
net: Alloc NAPI page frags from their own pool
This patch series implements a means of allocating page fragments without
the need for the local_irq_save/restore in __netdev_alloc_frag. By doing
this I am able to decrease packet processing time by 11ns per packet in my
test environment.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/skbuff.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index ab0bc43c82a4..85ab7d72b54c 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -151,6 +151,7 @@ struct net_device; struct scatterlist; struct pipe_inode_info; struct iov_iter; +struct napi_struct; #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) struct nf_conntrack { @@ -673,6 +674,7 @@ struct sk_buff { #define SKB_ALLOC_FCLONE 0x01 #define SKB_ALLOC_RX 0x02 +#define SKB_ALLOC_NAPI 0x04 /* Returns true if the skb was allocated from PFMEMALLOC reserves */ static inline bool skb_pfmemalloc(const struct sk_buff *skb) @@ -2164,6 +2166,15 @@ static inline struct sk_buff *netdev_alloc_skb_ip_align(struct net_device *dev, return __netdev_alloc_skb_ip_align(dev, length, GFP_ATOMIC); } +void *napi_alloc_frag(unsigned int fragsz); +struct sk_buff *__napi_alloc_skb(struct napi_struct *napi, + unsigned int length, gfp_t gfp_mask); +static inline struct sk_buff *napi_alloc_skb(struct napi_struct *napi, + unsigned int length) +{ + return __napi_alloc_skb(napi, length, GFP_ATOMIC); +} + /** * __dev_alloc_pages - allocate page for network Rx * @gfp_mask: allocation priority. Set __GFP_NOMEMALLOC if not for network Rx |