From patchwork Tue Apr 15 12:35:11 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kenjiro Nakayama X-Patchwork-Id: 339255 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id A441B14008A for ; Tue, 15 Apr 2014 22:35:57 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754255AbaDOMff (ORCPT ); Tue, 15 Apr 2014 08:35:35 -0400 Received: from mail-pd0-f174.google.com ([209.85.192.174]:54328 "EHLO mail-pd0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751491AbaDOMf3 (ORCPT ); Tue, 15 Apr 2014 08:35:29 -0400 Received: by mail-pd0-f174.google.com with SMTP id y13so9300196pdi.5 for ; Tue, 15 Apr 2014 05:35:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:user-agent:date:message-id:mime-version :content-type; bh=jtEtT2IiKDsKAtdjsr0kqdNlLdSwAL5ZRzcmkWaqYqk=; b=G5uXSnHsKQiB1wBhLWhufele83uRYt8pmFk5dW6RRBCxxRC1KVooVi+uGhnL+p3yI6 9a1RcGz2eZV5hsCC6zxWjngC9DJ9kJthQmE9HuAED8gq7RaTVxr30iCRtQkF0v5Iyys7 GNxsLNOiFqk5qXD2YrGngdlIYi6RkrHcbSZ1j9Wgm43sucfjdfYGpzDBl9VaxZ8f7ioe aUVPEphb2na028SIOrAD+/QBT1tV6litTPBCe2HwFVVp19cs0yOaNeUZH34tG2IEFTsL hrhxUhll7eM0jHimzIgG276CnDU1gO5iRop24Mft21tm9hUcJHXd5Boy2nzMUHKUcz1L 5WQA== X-Received: by 10.67.23.135 with SMTP id ia7mr1653511pad.5.1397565328975; Tue, 15 Apr 2014 05:35:28 -0700 (PDT) Received: from localhost.localdomain (nat-pool-nrt-t1.redhat.com. [66.187.238.10]) by mx.google.com with ESMTPSA id te2sm95225610pac.25.2014.04.15.05.35.25 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 15 Apr 2014 05:35:27 -0700 (PDT) From: Kenjiro Nakayama To: LKML Cc: Neal Cardwell , Netdev , Yuchung Cheng , Eric Dumazet Subject: [PATCH v2] ipv4: Add option to get TCP_FASTOPEN to getsockopt() User-agent: mu4e 0.9.9.5; emacs 24.3.1 Date: Tue, 15 Apr 2014 21:35:11 +0900 Message-ID: <87r44yixds.fsf@gmail.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi, TCP_FASTOPEN option can be set via setsockopt(), but the value cannot be gotten via getsockopt(). This patch adds the option to getsockopt(). Sighned-off-by: Kenjiro Nakayama Add option to get TCP_FASTOPEN to getsockopt() --- net/ipv4/tcp.c | 7 +++++++ 1 file changed, 7 insertions(+) -- 1.9.0 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 4bd6d52..86186f4 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2916,6 +2916,13 @@ static int do_tcp_getsockopt(struct sock *sk, int level, case TCP_USER_TIMEOUT: val = jiffies_to_msecs(icsk->icsk_user_timeout); break; + + case TCP_FASTOPEN: + val = icsk->icsk_accept_queue.fastopenq ? + icsk->icsk_accept_queue.fastopenq->max_qlen + : sysctl_tcp_fastopen; + break; + case TCP_TIMESTAMP: val = tcp_time_stamp + tp->tsoffset; break;