From b3fc3504722a4598fedb6e710383fa4e71e8fb5e Mon Sep 17 00:00:00 2001 From: Vijay Kumar Srivastava Date: Wed, 3 Nov 2021 19:27:53 +0530 Subject: [PATCH] vdpa/sfc: support setting vring state Implements vDPA ops set_vring_state to configure vring state. Signed-off-by: Vijay Kumar Srivastava Acked-by: Andrew Rybchenko Reviewed-by: Maxime Coquelin Reviewed-by: Chenbo Xia --- drivers/vdpa/sfc/sfc_vdpa_ops.c | 54 ++++++++++++++++++++++++++++++--- 1 file changed, 50 insertions(+), 4 deletions(-) diff --git a/drivers/vdpa/sfc/sfc_vdpa_ops.c b/drivers/vdpa/sfc/sfc_vdpa_ops.c index 4d8e675905..c4ce4474ef 100644 --- a/drivers/vdpa/sfc/sfc_vdpa_ops.c +++ b/drivers/vdpa/sfc/sfc_vdpa_ops.c @@ -702,11 +702,57 @@ sfc_vdpa_dev_close(int vid) static int sfc_vdpa_set_vring_state(int vid, int vring, int state) { - RTE_SET_USED(vid); - RTE_SET_USED(vring); - RTE_SET_USED(state); + struct sfc_vdpa_ops_data *ops_data; + struct rte_vdpa_device *vdpa_dev; + efx_rc_t rc; + int vring_max; + void *dev; - return -1; + vdpa_dev = rte_vhost_get_vdpa_device(vid); + + ops_data = sfc_vdpa_get_data_by_dev(vdpa_dev); + if (ops_data == NULL) + return -1; + + dev = ops_data->dev_handle; + + sfc_vdpa_info(dev, + "vDPA ops set_vring_state: vid: %d, vring: %d, state:%d", + vid, vring, state); + + vring_max = (sfc_vdpa_adapter_by_dev_handle(dev)->max_queue_count * 2); + + if (vring < 0 || vring > vring_max) { + sfc_vdpa_err(dev, "received invalid vring id : %d to set state", + vring); + return -1; + } + + /* + * Skip if device is not yet started. virtqueues state can be + * changed once it is created and other configurations are done. + */ + if (ops_data->state != SFC_VDPA_STATE_STARTED) + return 0; + + if (ops_data->vq_cxt[vring].enable == state) + return 0; + + if (state == 0) { + rc = sfc_vdpa_virtq_stop(ops_data, vring); + if (rc != 0) { + sfc_vdpa_err(dev, "virtqueue stop failed: %s", + rte_strerror(rc)); + } + } else { + rc = sfc_vdpa_virtq_start(ops_data, vring); + if (rc != 0) { + sfc_vdpa_err(dev, "virtqueue start failed: %s", + rte_strerror(rc)); + } + } + + return rc; } static int -- 2.39.5