Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754203AbdCPSdt (ORCPT ); Thu, 16 Mar 2017 14:33:49 -0400 Received: from mail-pf0-f194.google.com ([209.85.192.194]:33462 "EHLO mail-pf0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753224AbdCPSdG (ORCPT ); Thu, 16 Mar 2017 14:33:06 -0400 Subject: [net-next PATCH 2/5] net: Call sk_mark_napi_id() in the ACK receive path From: Alexander Duyck To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: sridhar.samudrala@intel.com, edumazet@google.com, davem@davemloft.net Date: Thu, 16 Mar 2017 11:32:44 -0700 Message-ID: <20170316183244.15806.77453.stgit@localhost.localdomain> In-Reply-To: <20170316183142.15806.38824.stgit@localhost.localdomain> References: <20170316183142.15806.38824.stgit@localhost.localdomain> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 822 Lines: 25 From: Sridhar Samudrala Call sk_mark_napi_id() in the ACK receive path of a TCP_NEW_SYN_RECV socket, so that sk->napi_id is set even if the socket hasn't yet received any data. With this change we should be able to start busy polling slightly earlier. Signed-off-by: Sridhar Samudrala Signed-off-by: Alexander Duyck --- net/ipv4/tcp_ipv4.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 08d870e45658..b86002a296f1 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1687,6 +1687,7 @@ int tcp_v4_rcv(struct sk_buff *skb) tcp_v4_send_reset(nsk, skb); goto discard_and_relse; } else { + sk_mark_napi_id(nsk, skb); sock_put(sk); return 0; }