diff options
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 71 |
1 files changed, 47 insertions, 24 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 9995165..7521bf4 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -417,8 +417,11 @@ struct sk_buff { * want to keep them across layers you have to do a skb_clone() * first. This is owned by whoever has the skb queued ATM. */ +#ifdef CONFIG_AS_FASTPATH + char cb[96] __aligned(8); +#else char cb[48] __aligned(8); - +#endif unsigned long _skb_refdst; #ifdef CONFIG_XFRM struct sec_path *sp; @@ -510,6 +513,10 @@ struct sk_buff { __be16 inner_protocol; __u16 inner_transport_header; __u16 inner_network_header; +#if defined(CONFIG_GIANFAR) && defined(CONFIG_AS_FASTPATH) + __u8 owner; + struct sk_buff *new_skb; +#endif __u16 inner_mac_header; __u16 transport_header; __u16 network_header; @@ -657,29 +664,24 @@ static inline struct sk_buff *alloc_skb_head(gfp_t priority) return __alloc_skb_head(priority, -1); } -extern struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src); -extern int skb_copy_ubufs(struct sk_buff *skb, gfp_t gfp_mask); -extern struct sk_buff *skb_clone(struct sk_buff *skb, - gfp_t priority); -extern struct sk_buff *skb_copy(const struct sk_buff *skb, - gfp_t priority); -extern struct sk_buff *__pskb_copy(struct sk_buff *skb, - int headroom, gfp_t gfp_mask); - -extern int pskb_expand_head(struct sk_buff *skb, - int nhead, int ntail, - gfp_t gfp_mask); -extern struct sk_buff *skb_realloc_headroom(struct sk_buff *skb, - unsigned int headroom); -extern struct sk_buff *skb_copy_expand(const struct sk_buff *skb, - int newheadroom, int newtailroom, - gfp_t priority); -extern int skb_to_sgvec(struct sk_buff *skb, - struct scatterlist *sg, int offset, - int len); -extern int skb_cow_data(struct sk_buff *skb, int tailbits, - struct sk_buff **trailer); -extern int skb_pad(struct sk_buff *skb, int pad); +void skb_recycle(struct sk_buff *skb); +bool skb_recycle_check(struct sk_buff *skb, int skb_size); + +struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src); +int skb_copy_ubufs(struct sk_buff *skb, gfp_t gfp_mask); +struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t priority); +struct sk_buff *skb_copy(const struct sk_buff *skb, gfp_t priority); +struct sk_buff *__pskb_copy(struct sk_buff *skb, int headroom, gfp_t gfp_mask); + +int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail, gfp_t gfp_mask); +struct sk_buff *skb_realloc_headroom(struct sk_buff *skb, + unsigned int headroom); +struct sk_buff *skb_copy_expand(const struct sk_buff *skb, int newheadroom, + int newtailroom, gfp_t priority); +int skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, + int len); +int skb_cow_data(struct sk_buff *skb, int tailbits, struct sk_buff **trailer); +int skb_pad(struct sk_buff *skb, int pad); #define dev_kfree_skb(a) consume_skb(a) extern int skb_append_datato_frags(struct sock *sk, struct sk_buff *skb, @@ -2803,6 +2805,27 @@ static inline void skb_checksum_none_assert(const struct sk_buff *skb) bool skb_partial_csum_set(struct sk_buff *skb, u16 start, u16 off); +static inline bool skb_is_recycleable(const struct sk_buff *skb, int skb_size) +{ + if (irqs_disabled()) + return false; + + if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) + return false; + + if (skb_is_nonlinear(skb) || skb->fclone != SKB_FCLONE_UNAVAILABLE) + return false; + + skb_size = SKB_DATA_ALIGN(skb_size + NET_SKB_PAD); + if (skb_end_offset(skb) < skb_size) + return false; + + if (skb_shared(skb) || skb_cloned(skb)) + return false; + + return true; +} + u32 __skb_get_poff(const struct sk_buff *skb); /** |