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| __ALLOC_SKB(9) | Linux Networking | __ALLOC_SKB(9) |
NAME¶
__alloc_skb - allocate a network buffer
SYNOPSIS¶
struct sk_buff * __alloc_skb(unsigned int size, gfp_t gfp_mask, int flags, int node);
ARGUMENTS¶
unsigned int size
size to allocate
gfp_t gfp_mask
allocation mask
int flags
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
int node
numa node to allocate memory on
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.
COPYRIGHT¶
| September 2017 | Kernel Hackers Manual 4.12 |