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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

size
size to allocate
gfp_mask
allocation mask
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
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

April 2017 Kernel Hackers Manual 4.10