skbuff: allow to optionally use NAPI cache from __alloc_skb()

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Reuse the old and forgotten SKB_ALLOC_NAPI to add an option to get
an skbuff_head from the NAPI cache instead of inplace allocation
inside __alloc_skb().
This implies that the function is called from softirq or BH-off
context, not for allocating a clone or from a distant node.

Cc: Alexander Duyck <alexander.duyck@gmail.com> # Simplified flags check
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Alexander Lobakin 2021-02-13 14:12:38 +00:00 • committed by David S. Miller

parent f450d539c0

commit d13612b58e

1 changed files with 5 additions and 1 deletions

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net/core/skbuff.c

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