diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40evf/i40evf_client.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40evf_client.c | 579 |
1 files changed, 0 insertions, 579 deletions
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_client.c b/drivers/net/ethernet/intel/i40evf/i40evf_client.c deleted file mode 100644 index 3cc9d60d0d72..000000000000 --- a/drivers/net/ethernet/intel/i40evf/i40evf_client.c +++ /dev/null @@ -1,579 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Copyright(c) 2013 - 2018 Intel Corporation. */ - -#include <linux/list.h> -#include <linux/errno.h> - -#include "i40evf.h" -#include "i40e_prototype.h" -#include "i40evf_client.h" - -static -const char i40evf_client_interface_version_str[] = I40EVF_CLIENT_VERSION_STR; -static struct i40e_client *vf_registered_client; -static LIST_HEAD(i40evf_devices); -static DEFINE_MUTEX(i40evf_device_mutex); - -static u32 i40evf_client_virtchnl_send(struct i40e_info *ldev, - struct i40e_client *client, - u8 *msg, u16 len); - -static int i40evf_client_setup_qvlist(struct i40e_info *ldev, - struct i40e_client *client, - struct i40e_qvlist_info *qvlist_info); - -static struct i40e_ops i40evf_lan_ops = { - .virtchnl_send = i40evf_client_virtchnl_send, - .setup_qvlist = i40evf_client_setup_qvlist, -}; - -/** - * i40evf_client_get_params - retrieve relevant client parameters - * @vsi: VSI with parameters - * @params: client param struct - **/ -static -void i40evf_client_get_params(struct i40e_vsi *vsi, struct i40e_params *params) -{ - int i; - - memset(params, 0, sizeof(struct i40e_params)); - params->mtu = vsi->netdev->mtu; - params->link_up = vsi->back->link_up; - - for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { - params->qos.prio_qos[i].tc = 0; - params->qos.prio_qos[i].qs_handle = vsi->qs_handle; - } -} - -/** - * i40evf_notify_client_message - call the client message receive callback - * @vsi: the VSI associated with this client - * @msg: message buffer - * @len: length of message - * - * If there is a client to this VSI, call the client - **/ -void i40evf_notify_client_message(struct i40e_vsi *vsi, u8 *msg, u16 len) -{ - struct i40e_client_instance *cinst; - - if (!vsi) - return; - - cinst = vsi->back->cinst; - if (!cinst || !cinst->client || !cinst->client->ops || - !cinst->client->ops->virtchnl_receive) { - dev_dbg(&vsi->back->pdev->dev, - "Cannot locate client instance virtchnl_receive function\n"); - return; - } - cinst->client->ops->virtchnl_receive(&cinst->lan_info, cinst->client, - msg, len); -} - -/** - * i40evf_notify_client_l2_params - call the client notify callback - * @vsi: the VSI with l2 param changes - * - * If there is a client to this VSI, call the client - **/ -void i40evf_notify_client_l2_params(struct i40e_vsi *vsi) -{ - struct i40e_client_instance *cinst; - struct i40e_params params; - - if (!vsi) - return; - - cinst = vsi->back->cinst; - - if (!cinst || !cinst->client || !cinst->client->ops || - !cinst->client->ops->l2_param_change) { - dev_dbg(&vsi->back->pdev->dev, - "Cannot locate client instance l2_param_change function\n"); - return; - } - i40evf_client_get_params(vsi, ¶ms); - cinst->lan_info.params = params; - cinst->client->ops->l2_param_change(&cinst->lan_info, cinst->client, - ¶ms); -} - -/** - * i40evf_notify_client_open - call the client open callback - * @vsi: the VSI with netdev opened - * - * If there is a client to this netdev, call the client with open - **/ -void i40evf_notify_client_open(struct i40e_vsi *vsi) -{ - struct i40evf_adapter *adapter = vsi->back; - struct i40e_client_instance *cinst = adapter->cinst; - int ret; - - if (!cinst || !cinst->client || !cinst->client->ops || - !cinst->client->ops->open) { - dev_dbg(&vsi->back->pdev->dev, - "Cannot locate client instance open function\n"); - return; - } - if (!(test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cinst->state))) { - ret = cinst->client->ops->open(&cinst->lan_info, cinst->client); - if (!ret) - set_bit(__I40E_CLIENT_INSTANCE_OPENED, &cinst->state); - } -} - -/** - * i40evf_client_release_qvlist - send a message to the PF to release iwarp qv map - * @ldev: pointer to L2 context. - * - * Return 0 on success or < 0 on error - **/ -static int i40evf_client_release_qvlist(struct i40e_info *ldev) -{ - struct i40evf_adapter *adapter = ldev->vf; - i40e_status err; - - if (adapter->aq_required) - return -EAGAIN; - - err = i40e_aq_send_msg_to_pf(&adapter->hw, - VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP, - I40E_SUCCESS, NULL, 0, NULL); - - if (err) - dev_err(&adapter->pdev->dev, - "Unable to send iWarp vector release message to PF, error %d, aq status %d\n", - err, adapter->hw.aq.asq_last_status); - - return err; -} - -/** - * i40evf_notify_client_close - call the client close callback - * @vsi: the VSI with netdev closed - * @reset: true when close called due to reset pending - * - * If there is a client to this netdev, call the client with close - **/ -void i40evf_notify_client_close(struct i40e_vsi *vsi, bool reset) -{ - struct i40evf_adapter *adapter = vsi->back; - struct i40e_client_instance *cinst = adapter->cinst; - - if (!cinst || !cinst->client || !cinst->client->ops || - !cinst->client->ops->close) { - dev_dbg(&vsi->back->pdev->dev, - "Cannot locate client instance close function\n"); - return; - } - cinst->client->ops->close(&cinst->lan_info, cinst->client, reset); - i40evf_client_release_qvlist(&cinst->lan_info); - clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cinst->state); -} - -/** - * i40evf_client_add_instance - add a client instance to the instance list - * @adapter: pointer to the board struct - * - * Returns cinst ptr on success, NULL on failure - **/ -static struct i40e_client_instance * -i40evf_client_add_instance(struct i40evf_adapter *adapter) -{ - struct i40e_client_instance *cinst = NULL; - struct i40e_vsi *vsi = &adapter->vsi; - struct netdev_hw_addr *mac = NULL; - struct i40e_params params; - - if (!vf_registered_client) - goto out; - - if (adapter->cinst) { - cinst = adapter->cinst; - goto out; - } - - cinst = kzalloc(sizeof(*cinst), GFP_KERNEL); - if (!cinst) - goto out; - - cinst->lan_info.vf = (void *)adapter; - cinst->lan_info.netdev = vsi->netdev; - cinst->lan_info.pcidev = adapter->pdev; - cinst->lan_info.fid = 0; - cinst->lan_info.ftype = I40E_CLIENT_FTYPE_VF; - cinst->lan_info.hw_addr = adapter->hw.hw_addr; - cinst->lan_info.ops = &i40evf_lan_ops; - cinst->lan_info.version.major = I40EVF_CLIENT_VERSION_MAJOR; - cinst->lan_info.version.minor = I40EVF_CLIENT_VERSION_MINOR; - cinst->lan_info.version.build = I40EVF_CLIENT_VERSION_BUILD; - i40evf_client_get_params(vsi, ¶ms); - cinst->lan_info.params = params; - set_bit(__I40E_CLIENT_INSTANCE_NONE, &cinst->state); - - cinst->lan_info.msix_count = adapter->num_iwarp_msix; - cinst->lan_info.msix_entries = - &adapter->msix_entries[adapter->iwarp_base_vector]; - - mac = list_first_entry(&cinst->lan_info.netdev->dev_addrs.list, - struct netdev_hw_addr, list); - if (mac) - ether_addr_copy(cinst->lan_info.lanmac, mac->addr); - else - dev_err(&adapter->pdev->dev, "MAC address list is empty!\n"); - - cinst->client = vf_registered_client; - adapter->cinst = cinst; -out: - return cinst; -} - -/** - * i40evf_client_del_instance - removes a client instance from the list - * @adapter: pointer to the board struct - * - **/ -static -void i40evf_client_del_instance(struct i40evf_adapter *adapter) -{ - kfree(adapter->cinst); - adapter->cinst = NULL; -} - -/** - * i40evf_client_subtask - client maintenance work - * @adapter: board private structure - **/ -void i40evf_client_subtask(struct i40evf_adapter *adapter) -{ - struct i40e_client *client = vf_registered_client; - struct i40e_client_instance *cinst; - int ret = 0; - - if (adapter->state < __I40EVF_DOWN) - return; - - /* first check client is registered */ - if (!client) - return; - - /* Add the client instance to the instance list */ - cinst = i40evf_client_add_instance(adapter); - if (!cinst) - return; - - dev_info(&adapter->pdev->dev, "Added instance of Client %s\n", - client->name); - - if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cinst->state)) { - /* Send an Open request to the client */ - - if (client->ops && client->ops->open) - ret = client->ops->open(&cinst->lan_info, client); - if (!ret) - set_bit(__I40E_CLIENT_INSTANCE_OPENED, - &cinst->state); - else - /* remove client instance */ - i40evf_client_del_instance(adapter); - } -} - -/** - * i40evf_lan_add_device - add a lan device struct to the list of lan devices - * @adapter: pointer to the board struct - * - * Returns 0 on success or none 0 on error - **/ -int i40evf_lan_add_device(struct i40evf_adapter *adapter) -{ - struct i40e_device *ldev; - int ret = 0; - - mutex_lock(&i40evf_device_mutex); - list_for_each_entry(ldev, &i40evf_devices, list) { - if (ldev->vf == adapter) { - ret = -EEXIST; - goto out; - } - } - ldev = kzalloc(sizeof(*ldev), GFP_KERNEL); - if (!ldev) { - ret = -ENOMEM; - goto out; - } - ldev->vf = adapter; - INIT_LIST_HEAD(&ldev->list); - list_add(&ldev->list, &i40evf_devices); - dev_info(&adapter->pdev->dev, "Added LAN device bus=0x%02x dev=0x%02x func=0x%02x\n", - adapter->hw.bus.bus_id, adapter->hw.bus.device, - adapter->hw.bus.func); - - /* Since in some cases register may have happened before a device gets - * added, we can schedule a subtask to go initiate the clients. - */ - adapter->flags |= I40EVF_FLAG_SERVICE_CLIENT_REQUESTED; - -out: - mutex_unlock(&i40evf_device_mutex); - return ret; -} - -/** - * i40evf_lan_del_device - removes a lan device from the device list - * @adapter: pointer to the board struct - * - * Returns 0 on success or non-0 on error - **/ -int i40evf_lan_del_device(struct i40evf_adapter *adapter) -{ - struct i40e_device *ldev, *tmp; - int ret = -ENODEV; - - mutex_lock(&i40evf_device_mutex); - list_for_each_entry_safe(ldev, tmp, &i40evf_devices, list) { - if (ldev->vf == adapter) { - dev_info(&adapter->pdev->dev, - "Deleted LAN device bus=0x%02x dev=0x%02x func=0x%02x\n", - adapter->hw.bus.bus_id, adapter->hw.bus.device, - adapter->hw.bus.func); - list_del(&ldev->list); - kfree(ldev); - ret = 0; - break; - } - } - - mutex_unlock(&i40evf_device_mutex); - return ret; -} - -/** - * i40evf_client_release - release client specific resources - * @client: pointer to the registered client - * - **/ -static void i40evf_client_release(struct i40e_client *client) -{ - struct i40e_client_instance *cinst; - struct i40e_device *ldev; - struct i40evf_adapter *adapter; - - mutex_lock(&i40evf_device_mutex); - list_for_each_entry(ldev, &i40evf_devices, list) { - adapter = ldev->vf; - cinst = adapter->cinst; - if (!cinst) - continue; - if (test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cinst->state)) { - if (client->ops && client->ops->close) - client->ops->close(&cinst->lan_info, client, - false); - i40evf_client_release_qvlist(&cinst->lan_info); - clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cinst->state); - - dev_warn(&adapter->pdev->dev, - "Client %s instance closed\n", client->name); - } - /* delete the client instance */ - i40evf_client_del_instance(adapter); - dev_info(&adapter->pdev->dev, "Deleted client instance of Client %s\n", - client->name); - } - mutex_unlock(&i40evf_device_mutex); -} - -/** - * i40evf_client_prepare - prepare client specific resources - * @client: pointer to the registered client - * - **/ -static void i40evf_client_prepare(struct i40e_client *client) -{ - struct i40e_device *ldev; - struct i40evf_adapter *adapter; - - mutex_lock(&i40evf_device_mutex); - list_for_each_entry(ldev, &i40evf_devices, list) { - adapter = ldev->vf; - /* Signal the watchdog to service the client */ - adapter->flags |= I40EVF_FLAG_SERVICE_CLIENT_REQUESTED; - } - mutex_unlock(&i40evf_device_mutex); -} - -/** - * i40evf_client_virtchnl_send - send a message to the PF instance - * @ldev: pointer to L2 context. - * @client: Client pointer. - * @msg: pointer to message buffer - * @len: message length - * - * Return 0 on success or < 0 on error - **/ -static u32 i40evf_client_virtchnl_send(struct i40e_info *ldev, - struct i40e_client *client, - u8 *msg, u16 len) -{ - struct i40evf_adapter *adapter = ldev->vf; - i40e_status err; - - if (adapter->aq_required) - return -EAGAIN; - - err = i40e_aq_send_msg_to_pf(&adapter->hw, VIRTCHNL_OP_IWARP, - I40E_SUCCESS, msg, len, NULL); - if (err) - dev_err(&adapter->pdev->dev, "Unable to send iWarp message to PF, error %d, aq status %d\n", - err, adapter->hw.aq.asq_last_status); - - return err; -} - -/** - * i40evf_client_setup_qvlist - send a message to the PF to setup iwarp qv map - * @ldev: pointer to L2 context. - * @client: Client pointer. - * @qvlist_info: queue and vector list - * - * Return 0 on success or < 0 on error - **/ -static int i40evf_client_setup_qvlist(struct i40e_info *ldev, - struct i40e_client *client, - struct i40e_qvlist_info *qvlist_info) -{ - struct virtchnl_iwarp_qvlist_info *v_qvlist_info; - struct i40evf_adapter *adapter = ldev->vf; - struct i40e_qv_info *qv_info; - i40e_status err; - u32 v_idx, i; - u32 msg_size; - - if (adapter->aq_required) - return -EAGAIN; - - /* A quick check on whether the vectors belong to the client */ - for (i = 0; i < qvlist_info->num_vectors; i++) { - qv_info = &qvlist_info->qv_info[i]; - if (!qv_info) - continue; - v_idx = qv_info->v_idx; - if ((v_idx >= - (adapter->iwarp_base_vector + adapter->num_iwarp_msix)) || - (v_idx < adapter->iwarp_base_vector)) - return -EINVAL; - } - - v_qvlist_info = (struct virtchnl_iwarp_qvlist_info *)qvlist_info; - msg_size = sizeof(struct virtchnl_iwarp_qvlist_info) + - (sizeof(struct virtchnl_iwarp_qv_info) * - (v_qvlist_info->num_vectors - 1)); - - adapter->client_pending |= BIT(VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP); - err = i40e_aq_send_msg_to_pf(&adapter->hw, - VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP, - I40E_SUCCESS, (u8 *)v_qvlist_info, msg_size, NULL); - - if (err) { - dev_err(&adapter->pdev->dev, - "Unable to send iWarp vector config message to PF, error %d, aq status %d\n", - err, adapter->hw.aq.asq_last_status); - goto out; - } - - err = -EBUSY; - for (i = 0; i < 5; i++) { - msleep(100); - if (!(adapter->client_pending & - BIT(VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP))) { - err = 0; - break; - } - } -out: - return err; -} - -/** - * i40evf_register_client - Register a i40e client driver with the L2 driver - * @client: pointer to the i40e_client struct - * - * Returns 0 on success or non-0 on error - **/ -int i40evf_register_client(struct i40e_client *client) -{ - int ret = 0; - - if (!client) { - ret = -EIO; - goto out; - } - - if (strlen(client->name) == 0) { - pr_info("i40evf: Failed to register client with no name\n"); - ret = -EIO; - goto out; - } - - if (vf_registered_client) { - pr_info("i40evf: Client %s has already been registered!\n", - client->name); - ret = -EEXIST; - goto out; - } - - if ((client->version.major != I40EVF_CLIENT_VERSION_MAJOR) || - (client->version.minor != I40EVF_CLIENT_VERSION_MINOR)) { - pr_info("i40evf: Failed to register client %s due to mismatched client interface version\n", - client->name); - pr_info("Client is using version: %02d.%02d.%02d while LAN driver supports %s\n", - client->version.major, client->version.minor, - client->version.build, - i40evf_client_interface_version_str); - ret = -EIO; - goto out; - } - - vf_registered_client = client; - - i40evf_client_prepare(client); - - pr_info("i40evf: Registered client %s with return code %d\n", - client->name, ret); -out: - return ret; -} -EXPORT_SYMBOL(i40evf_register_client); - -/** - * i40evf_unregister_client - Unregister a i40e client driver with the L2 driver - * @client: pointer to the i40e_client struct - * - * Returns 0 on success or non-0 on error - **/ -int i40evf_unregister_client(struct i40e_client *client) -{ - int ret = 0; - - /* When a unregister request comes through we would have to send - * a close for each of the client instances that were opened. - * client_release function is called to handle this. - */ - i40evf_client_release(client); - - if (vf_registered_client != client) { - pr_info("i40evf: Client %s has not been registered\n", - client->name); - ret = -ENODEV; - goto out; - } - vf_registered_client = NULL; - pr_info("i40evf: Unregistered client %s\n", client->name); -out: - return ret; -} -EXPORT_SYMBOL(i40evf_unregister_client); |
