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bh=1Xa/Eo0mHN9VAabkFhhaj/1662E5XKgexnLl38Jnm0c=; b=g67K0Q7mGtKCXwDYJrjuDlKA5/NvzW6hn1y1eDA/M1Se95CMmMMVDW+8oA7gzI3TsRdu2i kikol0C1jEzDo8Aaov1n49TIAG4ORnxVcZ7mBZlnVkdE02o+QKezXQ/ooYGsR1WdKtnumj AT+3apHvyoflByWmaMfl/NHH77sbq8c= X-MC-Unique: 2jTx7jw0OPyAJ4oTa2ayqQ-1 From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PATCH 1/2] vhost-vdpa: define and use default value for vhostdev Date: Thu, 3 Sep 2020 20:53:26 +0200 Message-Id: <20200903185327.774708-2-lvivier@redhat.com> In-Reply-To: <20200903185327.774708-1-lvivier@redhat.com> References: <20200903185327.774708-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lvivier@redhat.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com 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; 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charset="utf-8" vhostdev is defined as optional in net.json, and if not set /dev/vhost-vdpa-0 should be used. The default value is not set and if vhostdev is not provided QEMU crashes with a SIGSEGV exception. Fixes: 1e0a84ea49b6 ("vhost-vdpa: introduce vhost-vdpa net client") Cc: lulu@redhat.com Signed-off-by: Laurent Vivier --- net/vhost-vdpa.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index bc0e0d2d35b7..24103ef241e4 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -24,6 +24,9 @@ #include "monitor/monitor.h" #include "hw/virtio/vhost.h" =20 +/* default vhostdev as defined in qapi/net.json */ +#define VHOST_VDPA_DEFAULT_VHOSTDEV "/dev/vhost-vdpa-0" + /* Todo:need to add the multiqueue support here */ typedef struct VhostVDPAState { NetClientState nc; @@ -224,5 +227,7 @@ int net_init_vhost_vdpa(const Netdev *netdev, const cha= r *name, (char *)name, errp)) { return -1; } - return net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, opts->vhostdev= ); + return net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, + opts->has_vhostdev ? + opts->vhostdev : VHOST_VDPA_DEFAULT_VHOSTDE= V); } --=20 2.26.2 From nobody Sun Apr 28 10:37:21 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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Thu, 03 Sep 2020 14:53:40 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-209-0iZj_lCpM0O1yjtPNldNpQ-1; Thu, 03 Sep 2020 14:53:36 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id F11E8185A0C9 for ; Thu, 3 Sep 2020 18:53:35 +0000 (UTC) Received: from thinkpad.redhat.com (ovpn-112-218.ams2.redhat.com [10.36.112.218]) by smtp.corp.redhat.com (Postfix) with ESMTP id 10896672C6; Thu, 3 Sep 2020 18:53:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1599159218; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=YVyI7uvdPvRx+1RKCkYnkMlTbAG6DGXcgOuqzNcY20I=; b=P1UaNQzWQEEG332KarEAwxeaKS5ZnPWjIEMQQhzdy7f38KI61wj+KVFhoBLRuqEi/xDdeF FHoHtf6wVwMJWqJO1zD/SZwL/x5VDcFjT/7EgE+VblYWDRb9gaTA/hOkCeeHGC6sKW4Z3w 41zJYxzrlJaAzcFJMglu6Bft/qnk1Ms= X-MC-Unique: 0iZj_lCpM0O1yjtPNldNpQ-1 From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PATCH 2/2] vhost-vdpa: improve error reporting Date: Thu, 3 Sep 2020 20:53:27 +0200 Message-Id: <20200903185327.774708-3-lvivier@redhat.com> In-Reply-To: <20200903185327.774708-1-lvivier@redhat.com> References: <20200903185327.774708-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lvivier@redhat.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com 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; 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charset="utf-8" Use Error framework to report the id of the device and the details of the error (vhostdev name and errno). For instance: qemu-system-x86_64 ... -netdev vhost-vdpa,id=3Dhostnet1 ... hostnet1: Cannot open '/dev/vhost-vdpa-0': No such file or directory Signed-off-by: Laurent Vivier Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- net/vhost-vdpa.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 24103ef241e4..8260902334ae 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -176,7 +176,8 @@ static NetClientInfo net_vhost_vdpa_info =3D { }; =20 static int net_vhost_vdpa_init(NetClientState *peer, const char *device, - const char *name, const char *vhostdev) + const char *name, const char *vhostdev, + Error **errp) { NetClientState *nc =3D NULL; VhostVDPAState *s; @@ -189,11 +190,15 @@ static int net_vhost_vdpa_init(NetClientState *peer, = const char *device, s =3D DO_UPCAST(VhostVDPAState, nc, nc); vdpa_device_fd =3D qemu_open(vhostdev, O_RDWR); if (vdpa_device_fd =3D=3D -1) { - return -errno; + error_setg_errno(errp, errno, "%s: Cannot open '%s'", name, vhostd= ev); + return -1; } s->vhost_vdpa.device_fd =3D vdpa_device_fd; ret =3D vhost_vdpa_add(nc, (void *)&s->vhost_vdpa); - assert(s->vhost_net); + if (ret =3D=3D -1) { + error_setg(errp, "%s: Cannot add vhost-vdpa '%s'", name, vhostdev); + return -1; + } return ret; } =20 @@ -229,5 +234,6 @@ int net_init_vhost_vdpa(const Netdev *netdev, const cha= r *name, } return net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, opts->has_vhostdev ? - opts->vhostdev : VHOST_VDPA_DEFAULT_VHOSTDE= V); + opts->vhostdev : VHOST_VDPA_DEFAULT_VHOSTDE= V, + errp); } --=20 2.26.2