__alloc_skb - allocate a network buffer
2. SYNOPSIS ▲
struct sk_buff * __alloc_skb(unsigned int size , gfp_t gfp_mask , int flags , int node );
3. ARGUMENTS ▲
size to allocate
If SKB_ALLOC_FCLONE is set, allocate from fclone cache instead of head cache and allocate a cloned (child) skb. If SKB_ALLOC_RX is set, __GFP_MEMALLOC will be used for allocations in case the data is required for writeback
numa node to allocate memory on
4. DESCRIPTION ▲
Allocate a new sk_buff. The returned buffer has no headroom and a tail room of at least 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.
5. COPYRIGHT ▲