From patchwork Tue Apr 5 07:32:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 556831 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3D2ACC4332F for ; Tue, 5 Apr 2022 11:45:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1378897AbiDELjl (ORCPT ); Tue, 5 Apr 2022 07:39:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52168 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354200AbiDEKMP (ORCPT ); Tue, 5 Apr 2022 06:12:15 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C0DFE54182; Tue, 5 Apr 2022 02:58:35 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 79944B817D3; Tue, 5 Apr 2022 09:58:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E39A2C385A1; Tue, 5 Apr 2022 09:58:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1649152713; bh=+I1kIkWfWuQyDHUH07N7TM2+SinRMRMesn+il5ED1Oo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1O1tsJTAogyfBZ1rbX7Q9SBJU0k6b+2r4o4l1IqYK3bOGcThvxdyT4Xa0F9EuUbw7 P9wPha+fadGwaSqdF48/4rzEabQsRoOvMkXhP4lOTcQMqDKkVKBuaGiKFFvgtW3WHA q5Ik+sZTOOqBHQheTyM8zJWjMGHlXQq4kdM4AdWE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kuniyuki Iwashima , "David S. Miller" Subject: [PATCH 5.15 877/913] af_unix: Support POLLPRI for OOB. Date: Tue, 5 Apr 2022 09:32:19 +0200 Message-Id: <20220405070406.111282097@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220405070339.801210740@linuxfoundation.org> References: <20220405070339.801210740@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Kuniyuki Iwashima commit d9a232d435dcc966738b0f414a86f7edf4f4c8c4 upstream. The commit 314001f0bf92 ("af_unix: Add OOB support") introduced OOB for AF_UNIX, but it lacks some changes for POLLPRI. Let's add the missing piece. In the selftest, normal datagrams are sent followed by OOB data, so this commit replaces `POLLIN | POLLPRI` with just `POLLPRI` in the first test case. Fixes: 314001f0bf92 ("af_unix: Add OOB support") Signed-off-by: Kuniyuki Iwashima Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/unix/af_unix.c | 4 ++++ tools/testing/selftests/net/af_unix/test_unix_oob.c | 6 +++--- 2 files changed, 7 insertions(+), 3 deletions(-) --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -3049,6 +3049,10 @@ static __poll_t unix_poll(struct file *f mask |= EPOLLIN | EPOLLRDNORM; if (sk_is_readable(sk)) mask |= EPOLLIN | EPOLLRDNORM; +#if IS_ENABLED(CONFIG_AF_UNIX_OOB) + if (READ_ONCE(unix_sk(sk)->oob_skb)) + mask |= EPOLLPRI; +#endif /* Connection-based need to check for termination and startup */ if ((sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_SEQPACKET) && --- a/tools/testing/selftests/net/af_unix/test_unix_oob.c +++ b/tools/testing/selftests/net/af_unix/test_unix_oob.c @@ -218,10 +218,10 @@ main(int argc, char **argv) /* Test 1: * veriyf that SIGURG is - * delivered and 63 bytes are - * read and oob is '@' + * delivered, 63 bytes are + * read, oob is '@', and POLLPRI works. */ - wait_for_data(pfd, POLLIN | POLLPRI); + wait_for_data(pfd, POLLPRI); read_oob(pfd, &oob); len = read_data(pfd, buf, 1024); if (!signal_recvd || len != 63 || oob != '@') {