diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-08-01 20:52:54 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-08-02 18:44:56 -0700 |
| commit | 37dfe5b8ddeb7c0bb97e3643dcfd8f9f1421ad25 (patch) | |
| tree | ad9f5d1ccdab0aea0327a88651f8789910baef0c | |
| parent | ae6db08f8b5606ccd95ef2aadd741905d3c13bc0 (diff) | |
net: tap: change tap_alloc_skb() to allow bigger paged allocations
tap_alloc_skb() is currently calling sock_alloc_send_pskb()
forcing order-0 page allocations.
Switch to PAGE_ALLOC_COSTLY_ORDER, to increase max 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/20230801205254.400094-5-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/tap.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/tap.c b/drivers/net/tap.c index 9137fb8c1c42..01574b9d410f 100644 --- a/drivers/net/tap.c +++ b/drivers/net/tap.c @@ -614,8 +614,10 @@ static inline struct sk_buff *tap_alloc_skb(struct sock *sk, size_t prepad, if (prepad + len < PAGE_SIZE || !linear) linear = len; + if (len - linear > MAX_SKB_FRAGS * (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) + linear = len - MAX_SKB_FRAGS * (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER); skb = sock_alloc_send_pskb(sk, prepad + linear, len - linear, noblock, - err, 0); + err, PAGE_ALLOC_COSTLY_ORDER); if (!skb) return NULL; |