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GET /api/patches/744/?format=api
{ "id": 744, "url": "http://patchwork.ozlabs.org/api/patches/744/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netdev/patch/1221947278-16715-7-git-send-email-ilpo.jarvinen@helsinki.fi/", "project": { "id": 7, "url": "http://patchwork.ozlabs.org/api/projects/7/?format=api", "name": "Linux network development", "link_name": "netdev", "list_id": "netdev.vger.kernel.org", "list_email": "netdev@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1221947278-16715-7-git-send-email-ilpo.jarvinen@helsinki.fi>", "list_archive_url": null, "date": "2008-09-20T21:47:49", "name": "[PATCHv2,net-next,06/15] tcp: No need to clear retransmit_skb_hint when SACKing", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": true, "hash": "a1d65d34defb14fb4adbff886a9cce60213b04e0", "submitter": { "id": 255, "url": "http://patchwork.ozlabs.org/api/people/255/?format=api", "name": "Ilpo Järvinen", "email": "ilpo.jarvinen@helsinki.fi" }, "delegate": { "id": 34, "url": "http://patchwork.ozlabs.org/api/users/34/?format=api", "username": "davem", "first_name": "David", "last_name": "Miller", "email": "davem@davemloft.net" }, "mbox": "http://patchwork.ozlabs.org/project/netdev/patch/1221947278-16715-7-git-send-email-ilpo.jarvinen@helsinki.fi/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/744/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/744/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<netdev-owner@vger.kernel.org>", "X-Original-To": "patchwork-incoming@ozlabs.org", "Delivered-To": "patchwork-incoming@ozlabs.org", "Received": [ "from vger.kernel.org (vger.kernel.org [209.132.176.167])\n\tby ozlabs.org (Postfix) with ESMTP id 33A81DDE28\n\tfor <patchwork-incoming@ozlabs.org>;\n\tSun, 21 Sep 2008 07:48:28 +1000 (EST)", "(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1752826AbYITVsQ (ORCPT <rfc822;patchwork-incoming@ozlabs.org>);\n\tSat, 20 Sep 2008 17:48:16 -0400", "(majordomo@vger.kernel.org) by vger.kernel.org id S1752694AbYITVsP\n\t(ORCPT <rfc822; netdev-outgoing>); Sat, 20 Sep 2008 17:48:15 -0400", "from courier.cs.helsinki.fi ([128.214.9.1]:56256 \"EHLO\n\tmail.cs.helsinki.fi\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1751651AbYITVsE (ORCPT\n\t<rfc822;netdev@vger.kernel.org>); Sat, 20 Sep 2008 17:48:04 -0400", "from wrl-59.cs.helsinki.fi (wrl-59.cs.helsinki.fi\n\t[128.214.166.179])\n\t(AUTH: PLAIN cs-relay, TLS: TLSv1/SSLv3,256bits,AES256-SHA)\n\tby mail.cs.helsinki.fi with esmtp; Sun, 21 Sep 2008 00:47:59 +0300\n\tid 0005BEE3.48D56F8F.00005173", "by wrl-59.cs.helsinki.fi (Postfix, from userid 50795)\n\tid B8D44A00A7; Sun, 21 Sep 2008 00:47:58 +0300 (EEST)" ], "From": "\"=?ISO-8859-1?Q?Ilpo_J=E4rvinen?=\" <ilpo.jarvinen@helsinki.fi>", "To": "David Miller <davem@davemloft.net>", "Cc": "netdev@vger.kernel.org,\n\t\"=?utf-8?q?Ilpo=20J=E4rvinen?=\" <ilpo.jarvinen@helsinki.fi>", "Subject": "[PATCHv2 net-next 06/15] tcp: No need to clear retransmit_skb_hint\n\twhen SACKing", "Date": "Sun, 21 Sep 2008 00:47:49 +0300", "Message-Id": "<1221947278-16715-7-git-send-email-ilpo.jarvinen@helsinki.fi>", "X-Mailer": "git-send-email 1.5.4.2.156.ge3c5", "In-Reply-To": "<1221947278-16715-6-git-send-email-ilpo.jarvinen@helsinki.fi>", "References": "<1221947278-16715-1-git-send-email-ilpo.jarvinen@helsinki.fi>\n\t<1221947278-16715-2-git-send-email-ilpo.jarvinen@helsinki.fi>\n\t<1221947278-16715-3-git-send-email-ilpo.jarvinen@helsinki.fi>\n\t<1221947278-16715-4-git-send-email-ilpo.jarvinen@helsinki.fi>\n\t<1221947278-16715-5-git-send-email-ilpo.jarvinen@helsinki.fi>\n\t<1221947278-16715-6-git-send-email-ilpo.jarvinen@helsinki.fi>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=ISO-8859-1", "Content-Transfer-Encoding": "8bit", "Sender": "netdev-owner@vger.kernel.org", "Precedence": "bulk", "List-ID": "<netdev.vger.kernel.org>", "X-Mailing-List": "netdev@vger.kernel.org" }, "content": "Because lost counter no longer requires tuning, this is\ntrivial to remove (the tuning wouldn't have been too\nhard either) because no \"new\" retransmittable skb appeared\nbelow retransmit_skb_hint when SACKing for sure.\n\nSigned-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>\n---\n net/ipv4/tcp_input.c | 7 -------\n 1 files changed, 0 insertions(+), 7 deletions(-)", "diff": "diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c\nindex 28e93f1..d017aed 100644\n--- a/net/ipv4/tcp_input.c\n+++ b/net/ipv4/tcp_input.c\n@@ -1298,9 +1298,6 @@ static int tcp_sacktag_one(struct sk_buff *skb, struct sock *sk,\n \t\t\t\t\t~(TCPCB_LOST|TCPCB_SACKED_RETRANS);\n \t\t\t\ttp->lost_out -= tcp_skb_pcount(skb);\n \t\t\t\ttp->retrans_out -= tcp_skb_pcount(skb);\n-\n-\t\t\t\t/* clear lost hint */\n-\t\t\t\ttp->retransmit_skb_hint = NULL;\n \t\t\t}\n \t\t} else {\n \t\t\tif (!(sacked & TCPCB_RETRANS)) {\n@@ -1319,9 +1316,6 @@ static int tcp_sacktag_one(struct sk_buff *skb, struct sock *sk,\n \t\t\tif (sacked & TCPCB_LOST) {\n \t\t\t\tTCP_SKB_CB(skb)->sacked &= ~TCPCB_LOST;\n \t\t\t\ttp->lost_out -= tcp_skb_pcount(skb);\n-\n-\t\t\t\t/* clear lost hint */\n-\t\t\t\ttp->retransmit_skb_hint = NULL;\n \t\t\t}\n \t\t}\n \n@@ -1351,7 +1345,6 @@ static int tcp_sacktag_one(struct sk_buff *skb, struct sock *sk,\n \tif (dup_sack && (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_RETRANS)) {\n \t\tTCP_SKB_CB(skb)->sacked &= ~TCPCB_SACKED_RETRANS;\n \t\ttp->retrans_out -= tcp_skb_pcount(skb);\n-\t\ttp->retransmit_skb_hint = NULL;\n \t}\n \n \treturn flag;\n", "prefixes": [ "PATCHv2", "net-next", "06/15" ] }