__alloc_skb — allocate a network buffer
struct sk_buff * __alloc_skb ( | unsigned int size, |
| gfp_t gfp_mask, | |
| int flags, | |
int node); |
sizesize to allocate
gfp_maskallocation mask
flagsIf 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
nodenuma node to allocate memory on
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.