skb_padto - pad an skbuff up to a minimal size
int skb_padto(struct sk_buff * skb, unsigned int len);
Pads up a buffer to ensure the trailing bytes exist and are blanked. If the buffer already contains sufficient data it is untouched. Otherwise it is extended. Returns zero on success. The skb is freed on error.
|January 2017||Kernel Hackers Manual 4.8.|