skb_seq_read
avail = skb_seq_read(consumed, &ptr, &seq);
buf_len = skb_seq_read(consumed, &buf, &st);
unsigned int skb_seq_read(unsigned int consumed, const u8 **data,
EXPORT_SYMBOL(skb_seq_read);
sqlen = skb_seq_read(offset, &data, st);
return skb_seq_read(offset, text, TS_SKB_CB(state));