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envelope-from=si-wei.liu@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Internal API to get the descriptor group index for a specific virtqueue through the VHOST_VDPA_GET_VRING_DESC_GROUP ioctl. Signed-off-by: Si-Wei Liu Acked-by: Jason Wang --- net/vhost-vdpa.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 90f4128..887c329 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -471,6 +471,25 @@ static int64_t vhost_vdpa_get_vring_group(int device_fd, unsigned vq_index, return state.num; } +static int64_t vhost_vdpa_get_vring_desc_group(int device_fd, + unsigned vq_index, + Error **errp) +{ + struct vhost_vring_state state = { + .index = vq_index, + }; + int r = ioctl(device_fd, VHOST_VDPA_GET_VRING_DESC_GROUP, &state); + + if (unlikely(r < 0)) { + r = -errno; + error_setg_errno(errp, errno, "Cannot get VQ %u descriptor group", + vq_index); + return r; + } + + return state.num; +} + static int vhost_vdpa_set_address_space_id(struct vhost_vdpa *v, unsigned vq_group, unsigned asid_num)