From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: [PATCH V1 net-next 09/12] net: ena: change rx copybreak default to reduce kernel memory pressure Date: Tue, 9 Oct 2018 21:45:06 +0300 Message-ID: <1539110709-31954-10-git-send-email-akiyano@amazon.com> References: <1539110709-31954-1-git-send-email-akiyano@amazon.com> Mime-Version: 1.0 Content-Type: text/plain Cc: Arthur Kiyanovski , , , , , , , , , , To: , Return-path: Received: from smtp-fw-9102.amazon.com ([207.171.184.29]:19021 "EHLO smtp-fw-9102.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726523AbeJJCEH (ORCPT ); Tue, 9 Oct 2018 22:04:07 -0400 In-Reply-To: <1539110709-31954-1-git-send-email-akiyano@amazon.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Arthur Kiyanovski Improves socket memory utilization when receiving packets larger than 128 bytes (the previous rx copybreak) and smaller than 256 bytes. Signed-off-by: Arthur Kiyanovski --- drivers/net/ethernet/amazon/ena/ena_netdev.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.h b/drivers/net/ethernet/amazon/ena/ena_netdev.h index 0cf35ae..d241dfc 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.h +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.h @@ -81,7 +81,7 @@ #define ENA_DEFAULT_RING_SIZE (1024) #define ENA_TX_WAKEUP_THRESH (MAX_SKB_FRAGS + 2) -#define ENA_DEFAULT_RX_COPYBREAK (128 - NET_IP_ALIGN) +#define ENA_DEFAULT_RX_COPYBREAK (256 - NET_IP_ALIGN) /* limit the buffer size to 600 bytes to handle MTU changes from very * small to very large, in which case the number of buffers per packet -- 2.7.4