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(unknown [2a02:6bf:8080:a72::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id ntP1fK1GvGk0-Xm8jnOcW; Fri, 19 Sep 2025 12:55:54 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1758275754; bh=CGQxVo0F5DM5TI71ogpEMoIKdtU4cMrWeEhuC0QhepU=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=d5jTSKPgst2bvxOQadbULtYmK0vnrP49/9luf8Y27NhoL1o69iAascykaC+bZxXum bdN2NPrnGrngpvyOq98Jpcu30juyxu7XP0k2ZOOe5+JJXTVFS8cknw+A0Wff7Y7PGw F3b/k5j3Me8uIO0tbAawiwRDoyWF4BEcc3YGOUdg= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: qemu-devel@nongnu.org, philmd@linaro.org, thuth@redhat.com, eblake@redhat.com, michael.roth@amd.com, armbru@redhat.com, farosas@suse.de, peterx@redhat.com, berrange@redhat.com, jasowang@redhat.com, steven.sistare@oracle.com, leiyang@redhat.com, davydov-max@yandex-team.ru, yc-core@yandex-team.ru, Vladimir Sementsov-Ogievskiy Subject: [PATCH v5 05/19] net/tap: rework net_tap_init() Date: Fri, 19 Sep 2025 12:55:31 +0300 Message-ID: <20250919095545.1912042-6-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250919095545.1912042-1-vsementsov@yandex-team.ru> References: <20250919095545.1912042-1-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=178.154.239.200; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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 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: 1758275898254116600 Content-Type: text/plain; charset="utf-8" In future (to support live-TAP migration with fds passing through unix socket) we'll want to postpone fd-initialization to the later point, when QAPI structured parameters are not available. So, let's now rework the function to interface without "tap" parameter. Also, rename to net_tap_open(), as it's just a wrapper on tap_open(), and having net_tap_init() and net_init_tap() functions in one file is confusing. Signed-off-by: Vladimir Sementsov-Ogievskiy --- net/tap.c | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-) diff --git a/net/tap.c b/net/tap.c index e268d79a97..1e5eaae6e7 100644 --- a/net/tap.c +++ b/net/tap.c @@ -643,20 +643,12 @@ int net_init_bridge(const Netdev *netdev, const char = *name, return 0; } =20 -static int net_tap_init(const NetdevTapOptions *tap, int *vnet_hdr, +static int net_tap_open(int *vnet_hdr, bool vnet_hdr_required, const char *setup_script, char *ifname, size_t ifname_sz, int mq_required, Error **errp) { Error *err =3D NULL; - int fd, vnet_hdr_required; - - if (tap->has_vnet_hdr) { - *vnet_hdr =3D tap->vnet_hdr; - vnet_hdr_required =3D *vnet_hdr; - } else { - *vnet_hdr =3D 1; - vnet_hdr_required =3D 0; - } + int fd; =20 fd =3D RETRY_ON_EINTR(tap_open(ifname, ifname_sz, vnet_hdr, vnet_hdr_r= equired, mq_required, errp)); @@ -973,6 +965,8 @@ free_fail: } else { g_autofree char *default_script =3D NULL; g_autofree char *default_downscript =3D NULL; + bool vnet_hdr_required =3D tap->has_vnet_hdr && tap->vnet_hdr; + if (tap->vhostfds) { error_setg(errp, "vhostfds=3D is invalid if fds=3D wasn't spec= ified"); return -1; @@ -993,7 +987,9 @@ free_fail: } =20 for (i =3D 0; i < queues; i++) { - fd =3D net_tap_init(tap, &vnet_hdr, i >=3D 1 ? "no" : script, + vnet_hdr =3D tap->has_vnet_hdr ? tap->vnet_hdr : 1; + fd =3D net_tap_open(&vnet_hdr, vnet_hdr_required, + i >=3D 1 ? "no" : script, ifname, sizeof ifname, queues > 1, errp); if (fd =3D=3D -1) { return -1; --=20 2.48.1