__alloc_skb — allocate a network buffer
size to allocate
allocation mask
allocate from fclone cache instead of head cache and allocate a cloned (child) skb
numa node to allocate memory on
Allocate a new sk_buff. The returned buffer has no headroom and a tail room of size bytes. The object has a reference count of one. The return is the buffer. On a failure the return is NULL.
Buffers may only be allocated from interrupts using a gfp_mask of GFP_ATOMIC.