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dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: jasowang@redhat.com Cc: qemu-devel@nongnu.org, bchaney@akamai.com, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, davydov-max@yandex-team.ru, vsementsov@yandex-team.ru Subject: [PATCH v2 06/12] net/tap: net_init_tap_one() refactor to get vhostfd param Date: Fri, 30 Jan 2026 00:32:08 +0300 Message-ID: <20260129213215.1405459-7-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260129213215.1405459-1-vsementsov@yandex-team.ru> References: <20260129213215.1405459-1-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 List-Id: qemu development 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: 1769722438741154100 Content-Type: text/plain; charset="utf-8" Get vhostfd instead of vhostfdname: - more symmetry with fd param - prepare to further changes Signed-off-by: Vladimir Sementsov-Ogievskiy --- net/tap.c | 48 +++++++++++++++++++++++++++++++----------------- 1 file changed, 31 insertions(+), 17 deletions(-) diff --git a/net/tap.c b/net/tap.c index 2eb8a2caeb..2c5f8e73fe 100644 --- a/net/tap.c +++ b/net/tap.c @@ -706,11 +706,10 @@ static int net_tap_init(const NetdevTapOptions *tap, = int *vnet_hdr, static bool net_init_tap_one(const NetdevTapOptions *tap, NetClientState *= peer, const char *model, const char *name, const char *ifname, const char *script, - const char *downscript, const char *vhostfdna= me, + const char *downscript, int vhostfd, int vnet_hdr, int fd, Error **errp) { TAPState *s =3D net_tap_fd_init(peer, model, name, fd, vnet_hdr); - int vhostfd; bool sndbuf_required =3D tap->has_sndbuf; int sndbuf =3D (tap->has_sndbuf && tap->sndbuf) ? MIN(tap->sndbuf, INT_MAX) : INT= _MAX; @@ -738,7 +737,7 @@ static bool net_init_tap_one(const NetdevTapOptions *ta= p, NetClientState *peer, } =20 if (tap->has_vhost ? tap->vhost : - vhostfdname || (tap->has_vhostforce && tap->vhostforce)) { + (vhostfd !=3D -1) || (tap->has_vhostforce && tap->vhostforce)) { VhostNetOptions options; =20 options.backend_type =3D VHOST_BACKEND_TYPE_KERNEL; @@ -749,15 +748,7 @@ static bool net_init_tap_one(const NetdevTapOptions *t= ap, NetClientState *peer, options.busyloop_timeout =3D 0; } =20 - if (vhostfdname) { - vhostfd =3D monitor_fd_param(monitor_cur(), vhostfdname, errp); - if (vhostfd =3D=3D -1) { - goto failed; - } - if (!qemu_set_blocking(vhostfd, false, errp)) { - goto failed; - } - } else { + if (vhostfd =3D=3D -1) { vhostfd =3D open("/dev/vhost-net", O_RDWR); if (vhostfd < 0) { error_setg_file_open(errp, errno, "/dev/vhost-net"); @@ -820,7 +811,7 @@ int net_init_tap(const Netdev *netdev, const char *name, NetClientState *peer, Error **errp) { const NetdevTapOptions *tap; - int fd =3D -1, vnet_hdr =3D 0, i =3D 0, queues; + int fd =3D -1, vhostfd =3D -1, vnet_hdr =3D 0, i =3D 0, queues; /* for the no-fd, no-helper case */ char ifname[128]; char **fds =3D NULL, **vhost_fds =3D NULL; @@ -866,6 +857,17 @@ int net_init_tap(const Netdev *netdev, const char *nam= e, return -1; } =20 + if (tap->vhostfd) { + vhostfd =3D monitor_fd_param(monitor_cur(), tap->vhostfd, errp); + if (vhostfd =3D=3D -1) { + return -1; + } + + if (!qemu_set_blocking(vhostfd, false, errp)) { + goto fail; + } + } + if (tap->fd) { fd =3D monitor_fd_param(monitor_cur(), tap->fd, errp); if (fd =3D=3D -1) { @@ -883,7 +885,7 @@ int net_init_tap(const Netdev *netdev, const char *name, =20 if (!net_init_tap_one(tap, peer, "tap", name, NULL, NULL, NULL, - tap->vhostfd, vnet_hdr, fd, errp)) { + vhostfd, vnet_hdr, fd, errp)) { goto fail; } } else if (tap->fds) { @@ -910,6 +912,17 @@ int net_init_tap(const Netdev *netdev, const char *nam= e, goto fail; } =20 + if (tap->vhostfds) { + vhostfd =3D monitor_fd_param(monitor_cur(), vhost_fds[i], = errp); + if (vhostfd =3D=3D -1) { + goto fail; + } + + if (!qemu_set_blocking(vhostfd, false, errp)) { + goto fail; + } + } + if (i =3D=3D 0) { vnet_hdr =3D tap_probe_vnet_hdr(fd, errp); if (vnet_hdr < 0) { @@ -923,7 +936,7 @@ int net_init_tap(const Netdev *netdev, const char *name, =20 if (!net_init_tap_one(tap, peer, "tap", name, ifname, NULL, NULL, - tap->vhostfds ? vhost_fds[i] : NULL, + vhostfd, vnet_hdr, fd, errp)) { goto fail; } @@ -945,7 +958,7 @@ int net_init_tap(const Netdev *netdev, const char *name, } =20 if (!net_init_tap_one(tap, peer, "bridge", name, ifname, - NULL, NULL, tap->vhostfd, + NULL, NULL, vhostfd, vnet_hdr, fd, errp)) { goto fail; } @@ -978,7 +991,7 @@ int net_init_tap(const Netdev *netdev, const char *name, if (!net_init_tap_one(tap, peer, "tap", name, ifname, i >=3D 1 ? NULL : script, i >=3D 1 ? NULL : downscript, - tap->vhostfd, vnet_hdr, fd, errp)) { + vhostfd, vnet_hdr, fd, errp)) { goto fail; } } @@ -988,6 +1001,7 @@ int net_init_tap(const Netdev *netdev, const char *nam= e, =20 fail: close(fd); + close(vhostfd); if (vhost_fds) { for (i =3D 0; i < nvhosts; i++) { g_free(vhost_fds[i]); --=20 2.52.0