diff options
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 62 |
1 files changed, 43 insertions, 19 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index ca8afa382bf2..9fcf534f2d92 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -533,6 +533,13 @@ enum { struct ubuf_info { void (*callback)(struct sk_buff *, struct ubuf_info *, bool zerocopy_success); + refcount_t refcnt; + u8 flags; +}; + +struct ubuf_info_msgzc { + struct ubuf_info ubuf; + union { struct { unsigned long desc; @@ -545,8 +552,6 @@ struct ubuf_info { u32 bytelen; }; }; - refcount_t refcnt; - u8 flags; struct mmpin { struct user_struct *user; @@ -555,6 +560,8 @@ struct ubuf_info { }; #define skb_uarg(SKB) ((struct ubuf_info *)(skb_shinfo(SKB)->destructor_arg)) +#define uarg_to_msgzc(ubuf_ptr) container_of((ubuf_ptr), struct ubuf_info_msgzc, \ + ubuf) int mm_account_pinned_pages(struct mmpin *mmp, size_t size); void mm_unaccount_pinned_pages(struct mmpin *mmp); @@ -1195,7 +1202,8 @@ static inline bool skb_unref(struct sk_buff *skb) return true; } -void kfree_skb_reason(struct sk_buff *skb, enum skb_drop_reason reason); +void __fix_address +kfree_skb_reason(struct sk_buff *skb, enum skb_drop_reason reason); /** * kfree_skb - free an sk_buff with 'NOT_SPECIFIED' reason @@ -1460,8 +1468,8 @@ void skb_flow_dissector_init(struct flow_dissector *flow_dissector, unsigned int key_count); struct bpf_flow_dissector; -bool bpf_flow_dissect(struct bpf_prog *prog, struct bpf_flow_dissector *ctx, - __be16 proto, int nhoff, int hlen, unsigned int flags); +u32 bpf_flow_dissect(struct bpf_prog *prog, struct bpf_flow_dissector *ctx, + __be16 proto, int nhoff, int hlen, unsigned int flags); bool __skb_flow_dissect(const struct net *net, const struct sk_buff *skb, @@ -2444,6 +2452,27 @@ static inline void skb_fill_page_desc(struct sk_buff *skb, int i, skb_shinfo(skb)->nr_frags = i + 1; } +/** + * skb_fill_page_desc_noacc - initialise a paged fragment in an skb + * @skb: buffer containing fragment to be initialised + * @i: paged fragment index to initialise + * @page: the page to use for this fragment + * @off: the offset to the data with @page + * @size: the length of the data + * + * Variant of skb_fill_page_desc() which does not deal with + * pfmemalloc, if page is not owned by us. + */ +static inline void skb_fill_page_desc_noacc(struct sk_buff *skb, int i, + struct page *page, int off, + int size) +{ + struct skb_shared_info *shinfo = skb_shinfo(skb); + + __skb_fill_page_desc_noacc(shinfo, i, page, off, size); + shinfo->nr_frags = i + 1; +} + void skb_add_rx_frag(struct sk_buff *skb, int i, struct page *page, int off, int size, unsigned int truesize); @@ -2587,20 +2616,6 @@ void *skb_pull_data(struct sk_buff *skb, size_t len); void *__pskb_pull_tail(struct sk_buff *skb, int delta); -static inline void *__pskb_pull(struct sk_buff *skb, unsigned int len) -{ - if (len > skb_headlen(skb) && - !__pskb_pull_tail(skb, len - skb_headlen(skb))) - return NULL; - skb->len -= len; - return skb->data += len; -} - -static inline void *pskb_pull(struct sk_buff *skb, unsigned int len) -{ - return unlikely(len > skb->len) ? NULL : __pskb_pull(skb, len); -} - static inline bool pskb_may_pull(struct sk_buff *skb, unsigned int len) { if (likely(len <= skb_headlen(skb))) @@ -2610,6 +2625,15 @@ static inline bool pskb_may_pull(struct sk_buff *skb, unsigned int len) return __pskb_pull_tail(skb, len - skb_headlen(skb)) != NULL; } +static inline void *pskb_pull(struct sk_buff *skb, unsigned int len) +{ + if (!pskb_may_pull(skb, len)) + return NULL; + + skb->len -= len; + return skb->data += len; +} + void skb_condense(struct sk_buff *skb); /** |