struct skb_shared_info {
atomic_t dataref;
unsigned short nr_frags;
- unsigned short tso_size;
- unsigned short tso_segs;
- unsigned short ufo_size;
+ unsigned short gso_size;
+ /* Warning: this field is not always filled in (UFO)! */
+ unsigned short gso_segs;
+ unsigned short gso_type;
unsigned int ip6_frag_id;
struct sk_buff *frag_list;
skb_frag_t frags[MAX_SKB_FRAGS];
SKB_FCLONE_CLONE,
};
+enum {
+ SKB_GSO_TCPV4 = 1 << 0,
+ SKB_GSO_UDP = 1 << 1,
+
+ /* This indicates the skb is from an untrusted source. */
+ SKB_GSO_DODGY = 1 << 2,
+
+ /* This indicates the tcp segment has CWR set. */
+ SKB_GSO_TCP_ECN = 1 << 3,
+
+ SKB_GSO_TCPV6 = 1 << 4,
+};
+
/**
* struct sk_buff - socket buffer
* @next: Next buffer in list
* @nf_bridge: Saved data about a bridged frame - see br_netfilter.c
* @tc_index: Traffic control index
* @tc_verd: traffic control verdict
+ * @dma_cookie: a cookie to one of several possible DMA operations
+ * done by skb DMA functions
* @secmark: security marking
*/
extern struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
int newheadroom, int newtailroom,
gfp_t priority);
-extern struct sk_buff * skb_pad(struct sk_buff *skb, int pad);
+extern int skb_pad(struct sk_buff *skb, int pad);
#define dev_kfree_skb(a) kfree_skb(a)
extern void skb_over_panic(struct sk_buff *skb, int len,
void *here);
return list_->qlen;
}
+extern struct lock_class_key skb_queue_lock_key;
+
static inline void skb_queue_head_init(struct sk_buff_head *list)
{
spin_lock_init(&list->lock);
+ lockdep_set_class(&list->lock, &skb_queue_lock_key);
list->prev = list->next = (struct sk_buff *)list;
list->qlen = 0;
}
*
* Pads up a buffer to ensure the trailing bytes exist and are
* blanked. If the buffer already contains sufficient data it
- * is untouched. Returns the buffer, which may be a replacement
- * for the original, or NULL for out of memory - in which case
- * the original buffer is still freed.
+ * is untouched. Otherwise it is extended. Returns zero on
+ * success. The skb is freed on error.
*/
-static inline struct sk_buff *skb_padto(struct sk_buff *skb, unsigned int len)
+static inline int skb_padto(struct sk_buff *skb, unsigned int len)
{
unsigned int size = skb->len;
if (likely(size >= len))
- return skb;
+ return 0;
return skb_pad(skb, len-size);
}
extern void skb_split(struct sk_buff *skb,
struct sk_buff *skb1, const u32 len);
-extern void skb_release_data(struct sk_buff *skb);
+extern struct sk_buff *skb_segment(struct sk_buff *skb, int features);
static inline void *skb_header_pointer(const struct sk_buff *skb, int offset,
int len, void *buffer)