From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELscVLYYw/nURaoKRDTBpQjuKTw/9g3YXL1wYiJjtNkdOpM1nUxgTlAqEmPKK6Kxl6X3lNRN ARC-Seal: i=1; a=rsa-sha256; t=1521800307; cv=none; d=google.com; s=arc-20160816; b=t9+CKvDR5ulSxWXjVJyV0ryd2yAg1dyFUIUJlM755BG+HUNG3P95n9E+fWpauKWqa0 Z3cYrsen8hCCXyfPjbClfokPTex7TvSVDHp2fVdQE5rFrViCx7G9Luulp/BQKqeDmnSQ Q5qSypdHOhTOsKijCm7sNi5YpmBjpqU8+ifps3OyP5ab8iNZL231tKSTiapAwOhfQK64 l5B+79dC63/hi13mPliXi/EvsmBo3xhsDVtBCErrosWfvOFo/sp7wEqxQys3Lz/R7l7P m62HQaKT9yE+aD7f90oBkr8ike1S2gHwJ3+ytYmDmbcNhZ5XcR+CNNkbeDNYZWQPjO2c HMtA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=rJTpKId8shgCf2uaJTJXy4rhe9OYnl48U0E7DY9An40=; b=w1tbbyS//5vXPuFMTc2AEd88emQBGj/DsSXzkv91rJYhJ8z3lcs7I42IaArOH9qH7S jIkCVeI7CZcE5ZjVzYODvMn9gkkjgwnxrbZDC6JFHBEd2v5eiF6TCk7ZJThlhmQLK5TR wO2QWcDNrWIiZL+OTSNbcOjFTeK3Dee+gEq/528OTEI0dPHY7uS/pcTOuNdKxjGv9kY8 OaY9hpQTAHNyd8nPi1aDpgeboVJ8ZV/Lk88ch7w+st6yLthAsWM2at5m7W3MEnYU8fWG cWQWXjr5lIXYgM6DD5ZYS7uL7Fs/Uy2W1fOC9rgOO01ozp6ywJCuyXv4fBnG+FlqPpPe 0Uqw== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, David Ahern , Hannes Frederic Sowa , "David S. Miller" , Sasha Levin Subject: [PATCH 3.18 08/47] net: ipv6: send unsolicited NA on admin up Date: Fri, 23 Mar 2018 10:54:59 +0100 Message-Id: <20180323094248.489986312@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180323094248.117679641@linuxfoundation.org> References: <20180323094248.117679641@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1595722415025079471?= X-GMAIL-MSGID: =?utf-8?q?1595723279440041460?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Ahern [ Upstream commit 4a6e3c5def13c91adf2acc613837001f09af3baa ] ndisc_notify is the ipv6 equivalent to arp_notify. When arp_notify is set to 1, gratuitous arp requests are sent when the device is brought up. The same is expected when ndisc_notify is set to 1 (per ndisc_notify in Documentation/networking/ip-sysctl.txt). The NA is not sent on NETDEV_UP event; add it. Fixes: 5cb04436eef6 ("ipv6: add knob to send unsolicited ND on link-layer address change") Signed-off-by: David Ahern Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- net/ipv6/ndisc.c | 2 ++ 1 file changed, 2 insertions(+) --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1646,6 +1646,8 @@ static int ndisc_netdev_event(struct not case NETDEV_CHANGEADDR: neigh_changeaddr(&nd_tbl, dev); fib6_run_gc(0, net, false); + /* fallthrough */ + case NETDEV_UP: idev = in6_dev_get(dev); if (!idev) break;