linuxkpi_alloc_skb
struct sk_buff *linuxkpi_alloc_skb(size_t, gfp_t);
skb = linuxkpi_alloc_skb(size, gfp);
skb = linuxkpi_alloc_skb(len, gfp);
skb = linuxkpi_alloc_skb(0, GFP_KERNEL);
new = linuxkpi_alloc_skb(len, gfp);