netdev - [RFC PATCH v2 14/19] vhost-vdpa: introduce uAPI to set group ASID

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220224212314.1326-15-gdawar@xilinx.com>
Date:   Fri, 25 Feb 2022 02:52:54 +0530
From:   Gautam Dawar <gautam.dawar@...inx.com>
To:     unlisted-recipients:; (no To-header on input)
CC:     <gdawar@...inx.com>, <martinh@...inx.com>, <hanand@...inx.com>,
        <tanujk@...inx.com>, <eperezma@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Zhu Lingshan <lingshan.zhu@...el.com>,
        Stefano Garzarella <sgarzare@...hat.com>,
        Xie Yongji <xieyongji@...edance.com>,
        Eli Cohen <elic@...dia.com>,
        Si-Wei Liu <si-wei.liu@...cle.com>,
        Parav Pandit <parav@...dia.com>,
        Longpeng <longpeng2@...wei.com>,
        <virtualization@...ts.linux-foundation.org>,
        <linux-kernel@...r.kernel.org>, <kvm@...r.kernel.org>,
        <netdev@...r.kernel.org>
Subject: [RFC PATCH v2 14/19] vhost-vdpa: introduce uAPI to set group ASID

Follows the vDPA support for associating ASID to a specific virtqueue
group. This patch adds a uAPI to support setting them from userspace.

Signed-off-by: Jason Wang <jasowang@...hat.com>
Signed-off-by: Gautam Dawar <gdawar@...inx.com>
---
 drivers/vhost/vdpa.c       | 8 ++++++++
 include/uapi/linux/vhost.h | 7 +++++++
 2 files changed, 15 insertions(+)

diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
index cfe57f0871a3..47e6cf9d0881 100644
--- a/drivers/vhost/vdpa.c
+++ b/drivers/vhost/vdpa.c
@@ -452,6 +452,14 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, unsigned int cmd,
 		else if (copy_to_user(argp, &s, sizeof(s)))
 			return -EFAULT;
 		return 0;
+	case VHOST_VDPA_SET_GROUP_ASID:
+		if (copy_from_user(&s, argp, sizeof(s)))
+			return -EFAULT;
+		if (s.num >= vdpa->nas)
+			return -EINVAL;
+		if (!ops->set_group_asid)
+			return -EOPNOTSUPP;
+		return ops->set_group_asid(vdpa, idx, s.num);
 	case VHOST_GET_VRING_BASE:
 		r = ops->get_vq_state(v->vdpa, idx, &vq_state);
 		if (r)
diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h
index 99de06476fdc..5e083490f1aa 100644
--- a/include/uapi/linux/vhost.h
+++ b/include/uapi/linux/vhost.h
@@ -158,4 +158,11 @@
  */
 #define VHOST_VDPA_GET_VRING_GROUP	_IOWR(VHOST_VIRTIO, 0x7B,	\
 					      struct vhost_vring_state)
+/* Set the ASID for a virtqueue group. The group index is stored in
+ * the index field of vhost_vring_state, the ASID associated with this
+ * group is stored at num field of vhost_vring_state.
+ */
+#define VHOST_VDPA_SET_GROUP_ASID	_IOW(VHOST_VIRTIO, 0x7C, \
+					     struct vhost_vring_state)
+
 #endif
-- 
2.25.0