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authorEric Dumazet <edumazet@google.com>2023-08-01 20:52:53 +0000
committerJakub Kicinski <kuba@kernel.org>2023-08-02 18:44:55 -0700
commitae6db08f8b5606ccd95ef2aadd741905d3c13bc0 (patch)
treeacb91bcdeeeca126f28acf1e77e9b53eccc68ef6 /net/packet
parentce7c7fef147311d0675aa8351ff72e0be1d5b3eb (diff)
net/packet: change packet_alloc_skb() to allow bigger paged allocations
packet_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/20230801205254.400094-4-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/packet')
-rw-r--r--net/packet/af_packet.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 8e3ddec4c3d5..3b77d255d22d 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2927,8 +2927,10 @@ static struct sk_buff *packet_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;