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GET /api/patches/95471/?format=api
{ "id": 95471, "url": "https://patches.dpdk.org/api/patches/95471/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/20210706164418.32615-8-vsrivast@xilinx.com/", "project": { "id": 1, "url": "https://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20210706164418.32615-8-vsrivast@xilinx.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20210706164418.32615-8-vsrivast@xilinx.com", "date": "2021-07-06T16:44:15", "name": "[07/10] vdpa/sfc: add support to get queue notify area info", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": true, "hash": "c8228cec91928c9ab2c9b4480df87cf23db87ce1", "submitter": { "id": 2281, "url": "https://patches.dpdk.org/api/people/2281/?format=api", "name": "Vijay Srivastava", "email": "vijay.srivastava@xilinx.com" }, "delegate": { "id": 2642, "url": "https://patches.dpdk.org/api/users/2642/?format=api", "username": "mcoquelin", "first_name": "Maxime", "last_name": "Coquelin", "email": "maxime.coquelin@redhat.com" }, "mbox": "https://patches.dpdk.org/project/dpdk/patch/20210706164418.32615-8-vsrivast@xilinx.com/mbox/", "series": [ { "id": 17687, "url": "https://patches.dpdk.org/api/series/17687/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=17687", "date": "2021-07-06T16:44:08", "name": "vdpa/sfc: introduce Xilinx vDPA driver", "version": 1, "mbox": "https://patches.dpdk.org/series/17687/mbox/" } ], "comments": "https://patches.dpdk.org/api/patches/95471/comments/", "check": "success", "checks": "https://patches.dpdk.org/api/patches/95471/checks/", "tags": {}, "related": [], "headers": { "Return-Path": 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"X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "SN1PR02MB3741", "X-Mailman-Approved-At": "Wed, 07 Jul 2021 10:25:28 +0200", "Subject": "[dpdk-dev] [PATCH 07/10] vdpa/sfc: add support to get queue notify\n area info", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "From: Vijay Kumar Srivastava <vsrivast@xilinx.com>\n\nImplement the vDPA ops get_notify_area to get the notify\narea info of the queue.\n\nSigned-off-by: Vijay Kumar Srivastava <vsrivast@xilinx.com>\n---\n drivers/vdpa/sfc/sfc_vdpa_ops.c | 166 ++++++++++++++++++++++++++++++++++++++--\n drivers/vdpa/sfc/sfc_vdpa_ops.h | 2 +\n 2 files changed, 162 insertions(+), 6 deletions(-)", "diff": "diff --git a/drivers/vdpa/sfc/sfc_vdpa_ops.c b/drivers/vdpa/sfc/sfc_vdpa_ops.c\nindex 4228044..a7b9085 100644\n--- a/drivers/vdpa/sfc/sfc_vdpa_ops.c\n+++ b/drivers/vdpa/sfc/sfc_vdpa_ops.c\n@@ -3,6 +3,8 @@\n * Copyright(c) 2020-2021 Xilinx, Inc.\n */\n \n+#include <pthread.h>\n+#include <unistd.h>\n #include <sys/ioctl.h>\n \n #include <rte_errno.h>\n@@ -534,6 +536,67 @@\n \treturn 0;\n }\n \n+static void *\n+sfc_vdpa_notify_ctrl(void *arg)\n+{\n+\tstruct sfc_vdpa_ops_data *ops_data;\n+\tint vid;\n+\n+\tops_data = arg;\n+\tif (ops_data == NULL)\n+\t\treturn NULL;\n+\n+\tsfc_vdpa_adapter_lock(ops_data->dev_handle);\n+\n+\tvid = ops_data->vid;\n+\n+\tif (rte_vhost_host_notifier_ctrl(vid, RTE_VHOST_QUEUE_ALL, true) != 0)\n+\t\tsfc_vdpa_info(ops_data->dev_handle,\n+\t\t\t \"vDPA (%s): Notifier could not get configured\",\n+\t\t\t ops_data->vdpa_dev->device->name);\n+\n+\tsfc_vdpa_adapter_unlock(ops_data->dev_handle);\n+\n+\treturn NULL;\n+}\n+\n+static int\n+sfc_vdpa_setup_notify_ctrl(int vid)\n+{\n+\tint ret;\n+\tstruct rte_vdpa_device *vdpa_dev;\n+\tstruct sfc_vdpa_ops_data *ops_data;\n+\n+\tvdpa_dev = rte_vhost_get_vdpa_device(vid);\n+\n+\tops_data = sfc_vdpa_get_data_by_dev(vdpa_dev);\n+\tif (ops_data == NULL) {\n+\t\tsfc_vdpa_err(ops_data->dev_handle,\n+\t\t\t \"invalid vDPA device : %p, vid : %d\",\n+\t\t\t vdpa_dev, vid);\n+\t\treturn -1;\n+\t}\n+\n+\tops_data->is_notify_thread_started = false;\n+\n+\t/*\n+\t * Use rte_vhost_host_notifier_ctrl in a thread to avoid\n+\t * dead lock scenario when multiple VFs are used in single vdpa\n+\t * application and multiple VFs are passed to a single VM.\n+\t */\n+\tret = pthread_create(&ops_data->notify_tid, NULL,\n+\t\t\t sfc_vdpa_notify_ctrl, ops_data);\n+\tif (ret != 0) {\n+\t\tsfc_vdpa_err(ops_data->dev_handle,\n+\t\t\t \"failed to create notify_ctrl thread: %s\",\n+\t\t\t rte_strerror(ret));\n+\t\treturn -1;\n+\t}\n+\tops_data->is_notify_thread_started = true;\n+\n+\treturn 0;\n+}\n+\n static int\n sfc_vdpa_dev_config(int vid)\n {\n@@ -567,18 +630,19 @@\n \tif (rc != 0)\n \t\tgoto fail_vdpa_start;\n \n-\tsfc_vdpa_adapter_unlock(ops_data->dev_handle);\n+\trc = sfc_vdpa_setup_notify_ctrl(vid);\n+\tif (rc != 0)\n+\t\tgoto fail_vdpa_notify;\n \n-\tsfc_vdpa_log_init(ops_data->dev_handle, \"vhost notifier ctrl\");\n-\tif (rte_vhost_host_notifier_ctrl(vid, RTE_VHOST_QUEUE_ALL, true) != 0)\n-\t\tsfc_vdpa_info(ops_data->dev_handle,\n-\t\t\t \"vDPA (%s): software relay for notify is used.\",\n-\t\t\t vdpa_dev->device->name);\n+\tsfc_vdpa_adapter_unlock(ops_data->dev_handle);\n \n \tsfc_vdpa_log_init(ops_data->dev_handle, \"done\");\n \n \treturn 0;\n \n+fail_vdpa_notify:\n+\tsfc_vdpa_stop(ops_data);\n+\n fail_vdpa_start:\n \tsfc_vdpa_close(ops_data);\n \n@@ -591,6 +655,7 @@\n static int\n sfc_vdpa_dev_close(int vid)\n {\n+\tint ret;\n \tstruct rte_vdpa_device *vdpa_dev;\n \tstruct sfc_vdpa_ops_data *ops_data;\n \n@@ -605,6 +670,23 @@\n \t}\n \n \tsfc_vdpa_adapter_lock(ops_data->dev_handle);\n+\tif (ops_data->is_notify_thread_started == true) {\n+\t\tvoid *status;\n+\t\tret = pthread_cancel(ops_data->notify_tid);\n+\t\tif (ret != 0) {\n+\t\t\tsfc_vdpa_err(ops_data->dev_handle,\n+\t\t\t\t \"failed to cancel notify_ctrl thread: %s\",\n+\t\t\t\t rte_strerror(ret));\n+\t\t}\n+\n+\t\tret = pthread_join(ops_data->notify_tid, &status);\n+\t\tif (ret != 0) {\n+\t\t\tsfc_vdpa_err(ops_data->dev_handle,\n+\t\t\t\t \"failed to join terminated notify_ctrl thread: %s\",\n+\t\t\t\t rte_strerror(ret));\n+\t\t}\n+\t}\n+\tops_data->is_notify_thread_started = false;\n \n \tsfc_vdpa_stop(ops_data);\n \tsfc_vdpa_close(ops_data);\n@@ -655,6 +737,77 @@\n \treturn vfio_dev_fd;\n }\n \n+static int\n+sfc_vdpa_get_notify_area(int vid, int qid, uint64_t *offset, uint64_t *size)\n+{\n+\tint ret;\n+\tefx_nic_t *nic;\n+\tint vfio_dev_fd;\n+\tefx_rc_t rc;\n+\tunsigned int bar_offset;\n+\tstruct rte_vdpa_device *vdpa_dev;\n+\tstruct sfc_vdpa_ops_data *ops_data;\n+\tstruct vfio_region_info reg = { .argsz = sizeof(reg) };\n+\tconst efx_nic_cfg_t *encp;\n+\tint max_vring_cnt;\n+\tint64_t len;\n+\tvoid *dev;\n+\n+\tvdpa_dev = rte_vhost_get_vdpa_device(vid);\n+\n+\tops_data = sfc_vdpa_get_data_by_dev(vdpa_dev);\n+\tif (ops_data == NULL)\n+\t\treturn -1;\n+\n+\tdev = ops_data->dev_handle;\n+\n+\tvfio_dev_fd = sfc_vdpa_adapter_by_dev_handle(dev)->vfio_dev_fd;\n+\tmax_vring_cnt =\n+\t\t(sfc_vdpa_adapter_by_dev_handle(dev)->max_queue_count * 2);\n+\n+\tnic = sfc_vdpa_adapter_by_dev_handle(ops_data->dev_handle)->nic;\n+\tencp = efx_nic_cfg_get(nic);\n+\n+\tif (qid >= max_vring_cnt) {\n+\t\tsfc_vdpa_err(dev, \"invalid qid : %d\", qid);\n+\t\treturn -1;\n+\t}\n+\n+\tif (ops_data->vq_cxt[qid].enable != B_TRUE) {\n+\t\tsfc_vdpa_err(dev, \"vq is not enabled\");\n+\t\treturn -1;\n+\t}\n+\n+\trc = efx_virtio_get_doorbell_offset(ops_data->vq_cxt[qid].vq,\n+\t\t\t\t\t &bar_offset);\n+\tif (rc != 0) {\n+\t\tsfc_vdpa_err(dev, \"failed to get doorbell offset: %s\",\n+\t\t\t rte_strerror(rc));\n+\t\treturn rc;\n+\t}\n+\n+\treg.index = sfc_vdpa_adapter_by_dev_handle(dev)->mem_bar.esb_rid;\n+\tret = ioctl(vfio_dev_fd, VFIO_DEVICE_GET_REGION_INFO, ®);\n+\tif (ret != 0) {\n+\t\tsfc_vdpa_err(dev, \"could not get device region info: %s\",\n+\t\t\t strerror(errno));\n+\t\treturn ret;\n+\t}\n+\n+\t*offset = reg.offset + bar_offset;\n+\n+\tlen = (1U << encp->enc_vi_window_shift) / 2;\n+\tif (len >= sysconf(_SC_PAGESIZE))\n+\t\t*size = sysconf(_SC_PAGESIZE);\n+\telse\n+\t\treturn -1;\n+\n+\tsfc_vdpa_info(dev, \"vDPA ops get_notify_area :: offset : 0x%\" PRIx64,\n+\t\t *offset);\n+\n+\treturn 0;\n+}\n+\n static struct rte_vdpa_dev_ops sfc_vdpa_ops = {\n \t.get_queue_num = sfc_vdpa_get_queue_num,\n \t.get_features = sfc_vdpa_get_features,\n@@ -664,6 +817,7 @@\n \t.set_vring_state = sfc_vdpa_set_vring_state,\n \t.set_features = sfc_vdpa_set_features,\n \t.get_vfio_device_fd = sfc_vdpa_get_vfio_device_fd,\n+\t.get_notify_area = sfc_vdpa_get_notify_area,\n };\n \n struct sfc_vdpa_ops_data *\ndiff --git a/drivers/vdpa/sfc/sfc_vdpa_ops.h b/drivers/vdpa/sfc/sfc_vdpa_ops.h\nindex 8d553c5..f7523ef 100644\n--- a/drivers/vdpa/sfc/sfc_vdpa_ops.h\n+++ b/drivers/vdpa/sfc/sfc_vdpa_ops.h\n@@ -50,6 +50,8 @@ struct sfc_vdpa_ops_data {\n \tstruct rte_vdpa_device\t\t*vdpa_dev;\n \tenum sfc_vdpa_context\t\tvdpa_context;\n \tenum sfc_vdpa_state\t\tstate;\n+\tpthread_t\t\t\tnotify_tid;\n+\tbool\t\t\t\tis_notify_thread_started;\n \n \tuint64_t\t\t\tdev_features;\n \tuint64_t\t\t\tdrv_features;\n", "prefixes": [ "07/10" ] }