#ifdef CONFIG_BRIDGE_NETFILTER
struct nf_bridge_info {
- atomic_t use;
- struct net_device *physindev;
- struct net_device *physoutdev;
- unsigned int mask;
- unsigned long data[32 / sizeof(unsigned long)];
+ atomic_t use;
+ unsigned int mask;
+ struct net_device *physindev;
+ struct net_device *physoutdev;
+ unsigned long data[32 / sizeof(unsigned long)];
};
#endif
__u8 wifi_acked_valid:1;
__u8 wifi_acked:1;
__u8 no_fcs:1;
- /* 9/11 bit hole (depending on ndisc_nodetype presence) */
+ __u8 head_frag:1;
+ /* 8/10 bit hole (depending on ndisc_nodetype presence) */
kmemcheck_bitfield_end(flags2);
#ifdef CONFIG_NET_DMA
extern void kfree_skb(struct sk_buff *skb);
extern void consume_skb(struct sk_buff *skb);
extern void __kfree_skb(struct sk_buff *skb);
+extern struct kmem_cache *skbuff_head_cache;
extern struct sk_buff *__alloc_skb(unsigned int size,
gfp_t priority, int fclone, int node);
-extern struct sk_buff *build_skb(void *data);
+extern struct sk_buff *build_skb(void *data, unsigned int frag_size);
static inline struct sk_buff *alloc_skb(unsigned int size,
gfp_t priority)
{
{
return skb->head + skb->end;
}
+
+static inline unsigned int skb_end_offset(const struct sk_buff *skb)
+{
+ return skb->end;
+}
#else
static inline unsigned char *skb_end_pointer(const struct sk_buff *skb)
{
return skb->end;
}
+
+static inline unsigned int skb_end_offset(const struct sk_buff *skb)
+{
+ return skb->end - skb->head;
+}
#endif
/* Internal */
*/
static inline struct sk_buff *skb_peek(const struct sk_buff_head *list_)
{
- struct sk_buff *list = ((const struct sk_buff *)list_)->next;
- if (list == (struct sk_buff *)list_)
- list = NULL;
- return list;
+ struct sk_buff *skb = list_->next;
+
+ if (skb == (struct sk_buff *)list_)
+ skb = NULL;
+ return skb;
}
/**
const struct sk_buff_head *list_)
{
struct sk_buff *next = skb->next;
+
if (next == (struct sk_buff *)list_)
next = NULL;
return next;
*/
static inline struct sk_buff *skb_peek_tail(const struct sk_buff_head *list_)
{
- struct sk_buff *list = ((const struct sk_buff *)list_)->prev;
- if (list == (struct sk_buff *)list_)
- list = NULL;
- return list;
+ struct sk_buff *skb = list_->prev;
+
+ if (skb == (struct sk_buff *)list_)
+ skb = NULL;
+ return skb;
+
}
/**
}
/**
- * skb_queue_splice - join two skb lists and reinitialise the emptied list
+ * skb_queue_splice_init - join two skb lists and reinitialise the emptied list
* @list: the new list to add
* @head: the place to add it in the first list
*
}
/**
- * skb_queue_splice_tail - join two skb lists and reinitialise the emptied list
+ * skb_queue_splice_tail_init - join two skb lists and reinitialise the emptied list
* @list: the new list to add
* @head: the place to add it in the first list
*
return -EFAULT;
}
-static inline int skb_can_coalesce(struct sk_buff *skb, int i,
- const struct page *page, int off)
+static inline bool skb_can_coalesce(struct sk_buff *skb, int i,
+ const struct page *page, int off)
{
if (i) {
const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1];
return page == skb_frag_page(frag) &&
off == frag->page_offset + skb_frag_size(frag);
}
- return 0;
+ return false;
}
static inline int __skb_linearize(struct sk_buff *skb)
return false;
skb_size = SKB_DATA_ALIGN(skb_size + NET_SKB_PAD);
- if (skb_end_pointer(skb) - skb->head < skb_size)
+ if (skb_end_offset(skb) < skb_size)
return false;
if (skb_shared(skb) || skb_cloned(skb))
return true;
}
+
+/**
+ * skb_head_is_locked - Determine if the skb->head is locked down
+ * @skb: skb to check
+ *
+ * The head on skbs build around a head frag can be removed if they are
+ * not cloned. This function returns true if the skb head is locked down
+ * due to either being allocated via kmalloc, or by being a clone with
+ * multiple references to the head.
+ */
+static inline bool skb_head_is_locked(const struct sk_buff *skb)
+{
+ return !skb->head_frag || skb_cloned(skb);
+}
#endif /* __KERNEL__ */
#endif /* _LINUX_SKBUFF_H */