{"id":831051,"url":"http://patchwork.ozlabs.org/api/1.2/patches/831051/?format=json","web_url":"http://patchwork.ozlabs.org/project/netdev/patch/1509078100.11887.28.camel@edumazet-glaptop3.roam.corp.google.com/","project":{"id":7,"url":"http://patchwork.ozlabs.org/api/1.2/projects/7/?format=json","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":"<1509078100.11887.28.camel@edumazet-glaptop3.roam.corp.google.com>","list_archive_url":null,"date":"2017-10-27T04:21:40","name":"[net] tcp: refresh tp timestamp before tcp_mtu_probe()","commit_ref":null,"pull_url":null,"state":"accepted","archived":true,"hash":"2434301590b365aa8d71df154c4d9324d0209d47","submitter":{"id":2404,"url":"http://patchwork.ozlabs.org/api/1.2/people/2404/?format=json","name":"Eric Dumazet","email":"eric.dumazet@gmail.com"},"delegate":{"id":34,"url":"http://patchwork.ozlabs.org/api/1.2/users/34/?format=json","username":"davem","first_name":"David","last_name":"Miller","email":"davem@davemloft.net"},"mbox":"http://patchwork.ozlabs.org/project/netdev/patch/1509078100.11887.28.camel@edumazet-glaptop3.roam.corp.google.com/mbox/","series":[{"id":10488,"url":"http://patchwork.ozlabs.org/api/1.2/series/10488/?format=json","web_url":"http://patchwork.ozlabs.org/project/netdev/list/?series=10488","date":"2017-10-27T04:21:40","name":"[net] tcp: refresh tp timestamp before tcp_mtu_probe()","version":1,"mbox":"http://patchwork.ozlabs.org/series/10488/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/831051/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/831051/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"patchwork-incoming@ozlabs.org","Delivered-To":"patchwork-incoming@ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; 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\n\tThu, 26 Oct 2017 21:21:42 -0700 (PDT)","Message-ID":"<1509078100.11887.28.camel@edumazet-glaptop3.roam.corp.google.com>","Subject":"[PATCH net] tcp: refresh tp timestamp before tcp_mtu_probe()","From":"Eric Dumazet ","To":"David Miller ","Cc":"netdev ","Date":"Thu, 26 Oct 2017 21:21:40 -0700","Content-Type":"text/plain; charset=\"UTF-8\"","X-Mailer":"Evolution 3.10.4-0ubuntu2 ","Mime-Version":"1.0","Content-Transfer-Encoding":"7bit","Sender":"netdev-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"netdev@vger.kernel.org"},"content":"From: Eric Dumazet \n\nIn the unlikely event tcp_mtu_probe() is sending a packet, we\nwant tp->tcp_mstamp being as accurate as possible. \n\nThis means we need to call tcp_mstamp_refresh() a bit earlier in\ntcp_write_xmit().\n\nFixes: 385e20706fac (\"tcp: use tp->tcp_mstamp in output path\")\nSigned-off-by: Eric Dumazet \n---\n net/ipv4/tcp_output.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)","diff":"diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c\nindex 1151870018e345592853b035a0902121c41e268d..ae60dd3faed0adc71731bc686f878afd4c628d32 100644\n--- a/net/ipv4/tcp_output.c\n+++ b/net/ipv4/tcp_output.c\n@@ -2239,6 +2239,7 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,\n \n \tsent_pkts = 0;\n \n+\ttcp_mstamp_refresh(tp);\n \tif (!push_one) {\n \t\t/* Do MTU probing. */\n \t\tresult = tcp_mtu_probe(sk);\n@@ -2250,7 +2251,6 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,\n \t}\n \n \tmax_segs = tcp_tso_segs(sk, mss_now);\n-\ttcp_mstamp_refresh(tp);\n \twhile ((skb = tcp_send_head(sk))) {\n \t\tunsigned int limit;\n \n","prefixes":["net"]}