net: tun: change tun_alloc_skb() to allow bigger paged allocations

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tun_alloc_skb() is currently calling sock_alloc_send_pskb()
forcing order-0 page allocations.

Switch to PAGE_ALLOC_COSTLY_ORDER, to increase max allocation size by 8x.

Also add logic to increase the linear part if needed.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tahsin Erdogan <trdgn@amazon.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20230801205254.400094-3-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Eric Dumazet 2023-08-01 20:52:52 +00:00 • committed by Jakub Kicinski

parent 09c2c90705

commit ce7c7fef14

1 changed files with 3 additions and 1 deletions

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drivers/net/tun.c

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