From nobody Wed Sep 17 18:19:45 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3D5F63093A7 for ; Tue, 26 Aug 2025 09:30:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756200604; cv=none; b=aVc6MDPtO4e2nIiefP9MkmLo+7RFidq/qxhO8XJCqQm4t0+8TA/l7Qqe8EqHvyBR+LhHXGN+CDQY5GGZ3cMrSbTs3DG/fhnsUNS4QD/dEfSSVFmon/lltBnItHnE3TxXQFpyf4xGvDtHuRMdq8/cGkJJal7xXt2Ej0s07KwNeYo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756200604; c=relaxed/simple; bh=8QagbiO/zoUMg9axgJJOInRd3KfFKq+khADlc59tUtU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nb9kVmQLA/AvH7Rx8jJxB8AeqNE5OeiudERv915UKn+GPrUzH4vU+++tOsLBMmnBr3tI+rXqXzf5DzgTznUbplMp9ZO92AS2L/XL1DIJR4E+mDT1QOQnicEEkVe3jbN8HEhRA4gEXMZRuFXcQqtLy1Z8fIJmKcs0Y+nKqN+kMBk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ntbY4Fiz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ntbY4Fiz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 95A53C116C6; Tue, 26 Aug 2025 09:30:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756200603; bh=8QagbiO/zoUMg9axgJJOInRd3KfFKq+khADlc59tUtU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ntbY4FizVL0boqrJT8H+GX7VsyXTDMes8eue9tksd8/I4hIg0EvqMiqzJ/IVyVSDz bbjImYx2pfETto5pq2RN4U5IodJE1qRu2TOE1BvVTos2G/7uVNi2DNpNj12XR3IJu8 Xs79cCACVDnvcC5U5Lt/RvmG7lFIMrN4PYgWhI2sarjSrt8w0JnAToqP7Tp2XUo/9Q 20SzJXHYBpLizFm55niKU/bG5ia/P4/qlNDHsa7tjnWAR8hIu4RdwB1NplmDq0gy5S ePMvY3UydV3xAnZf40K4zaLBdiSnc2ioUWdA06GTpu8tUcLmmuvy4FJOv+Ewb31nkG d6/zEkT+8SFKQ== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next v3 11/14] selftests: mptcp: sockopt: set FIONREAD ioctl Date: Tue, 26 Aug 2025 17:29:35 +0800 Message-ID: X-Mailer: git-send-email 2.48.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Geliang Tang Implements FIONREAD ioctl checks to validate available data size, ensuring synchronization between write and read operations with non-blocking waits. These codes are from mptcp_inq.c. Signed-off-by: Geliang Tang --- .../selftests/net/mptcp/mptcp_sockopt.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.c b/tools/test= ing/selftests/net/mptcp/mptcp_sockopt.c index b8e8fec8979f..7cc4626b7bf3 100644 --- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.c +++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.c @@ -771,6 +771,24 @@ static void process_one_client(int fd, int unixfd) if (expect_len > sizeof(buf)) xerror("expect len %zu exceeds buffer size", expect_len); =20 + for (;;) { + struct timespec req; + unsigned int queued; + + ret =3D ioctl(fd, FIONREAD, &queued); + if (ret < 0) + die_perror("FIONREAD"); + if (queued > expect_len) + xerror("FIONREAD returned %u, but only %zu expected\n", + queued, expect_len); + if (queued =3D=3D expect_len) + break; + + req.tv_sec =3D 0; + req.tv_nsec =3D 1000 * 1000ul; + nanosleep(&req, NULL); + } + /* read one byte, expect cmsg to return expected - 1 */ ret =3D recvmsg(fd, &msg, 0); if (ret < 0) --=20 2.48.1