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(unknown [2a02:6bf:8080:c91::1:b]) by mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id Q3YUrj0Gl8c0-dUguLtR1; Sat, 23 Aug 2025 19:03:27 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1755965008; bh=XZ907GoTMSukCC5aa7hwWOOYOieaiLj2RzPVyep6PXA=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=0t6W0nQnMN9WznUVosvyiRGX3IQdE8Pj+wUFqeDWkI1/MCB71YTh6HnHDXy8BWT3Y 7HW5KNApu4YR41atLlQr3zrtOirspQb37MNN+t776FGq+zg3i37+Ijq16H9JvVcO1m zSULVdPo8MWtn6KHlqedUVcAYoaJXe1TkGS8pvDI= Authentication-Results: mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: jasowang@redhat.com Cc: qemu-devel@nongnu.org, vsementsov@yandex-team.ru, leiyang@redhat.com, steven.sistare@oracle.com Subject: [PATCH v2 02/20] net/tap: add set_fd_nonblocking() helper Date: Sat, 23 Aug 2025 19:03:05 +0300 Message-ID: <20250823160323.20811-3-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250823160323.20811-1-vsementsov@yandex-team.ru> References: <20250823160323.20811-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c02:900:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1755965304953124100 Content-Type: text/plain; charset="utf-8" Signed-off-by: Vladimir Sementsov-Ogievskiy --- net/tap.c | 34 +++++++++++++++++++--------------- 1 file changed, 19 insertions(+), 15 deletions(-) diff --git a/net/tap.c b/net/tap.c index 531ef75e91..ba2731ee8a 100644 --- a/net/tap.c +++ b/net/tap.c @@ -609,6 +609,18 @@ static int net_bridge_run_helper(const char *helper, c= onst char *bridge, } } =20 +static bool set_fd_nonblocking(int fd, const char *note, Error **errp) +{ + bool ok =3D g_unix_set_fd_nonblocking(fd, true, NULL); + + if (!ok) { + error_setg_errno(errp, errno, "Failed to set fd %d (%s) nonblockin= g", + fd, note); + } + + return ok; +} + int net_init_bridge(const Netdev *netdev, const char *name, NetClientState *peer, Error **errp) { @@ -627,10 +639,10 @@ int net_init_bridge(const Netdev *netdev, const char = *name, return -1; } =20 - if (!g_unix_set_fd_nonblocking(fd, true, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); + if (!set_fd_nonblocking(fd, name, errp)) { return -1; } + vnet_hdr =3D tap_probe_vnet_hdr(fd, errp); if (vnet_hdr < 0) { close(fd); @@ -729,9 +741,7 @@ static int net_init_tap_one(const NetdevTapOptions *tap= , NetClientState *peer, error_propagate(errp, err); goto failed; } - if (!g_unix_set_fd_nonblocking(vhostfd, true, NULL)) { - error_setg_errno(errp, errno, "%s: Can't use file descript= or %d", - name, fd); + if (!set_fd_nonblocking(vhostfd, vhostfdname, errp)) { goto failed; } } else { @@ -741,8 +751,7 @@ static int net_init_tap_one(const NetdevTapOptions *tap= , NetClientState *peer, "tap: open vhost char device failed"); goto failed; } - if (!g_unix_set_fd_nonblocking(vhostfd, true, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblockin= g"); + if (!set_fd_nonblocking(vhostfd, "opened /dev/vhost-net", errp= )) { goto failed; } } @@ -839,9 +848,7 @@ int net_init_tap(const Netdev *netdev, const char *name, return -1; } =20 - if (!g_unix_set_fd_nonblocking(fd, true, NULL)) { - error_setg_errno(errp, errno, "%s: Can't use file descriptor %= d", - name, fd); + if (!set_fd_nonblocking(fd, tap->fd, errp)) { close(fd); return -1; } @@ -893,10 +900,8 @@ int net_init_tap(const Netdev *netdev, const char *nam= e, goto free_fail; } =20 - if (!g_unix_set_fd_nonblocking(fd, true, NULL)) { + if (!set_fd_nonblocking(fd, fds[i], errp)) { ret =3D -1; - error_setg_errno(errp, errno, "%s: Can't use file descript= or %d", - name, fd); goto free_fail; } =20 @@ -948,8 +953,7 @@ free_fail: return -1; } =20 - if (!g_unix_set_fd_nonblocking(fd, true, NULL)) { - error_setg_errno(errp, errno, "Failed to set FD nonblocking"); + if (!set_fd_nonblocking(fd, name, errp)) { return -1; } vnet_hdr =3D tap_probe_vnet_hdr(fd, errp); --=20 2.48.1