756 lines
18 KiB
C
756 lines
18 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2020 The Linux Foundation. All rights reserved.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/workqueue.h>
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#include "pdr_internal.h"
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struct pdr_service {
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char service_name[SERVREG_NAME_LENGTH + 1];
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char service_path[SERVREG_NAME_LENGTH + 1];
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struct sockaddr_qrtr addr;
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unsigned int instance;
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unsigned int service;
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u8 service_data_valid;
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u32 service_data;
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int state;
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bool need_notifier_register;
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bool need_notifier_remove;
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bool need_locator_lookup;
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bool service_connected;
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struct list_head node;
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};
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struct pdr_handle {
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struct qmi_handle locator_hdl;
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struct qmi_handle notifier_hdl;
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struct sockaddr_qrtr locator_addr;
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struct list_head lookups;
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struct list_head indack_list;
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/* control access to pdr lookup/indack lists */
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struct mutex list_lock;
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/* serialize pd status invocation */
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struct mutex status_lock;
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/* control access to the locator state */
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struct mutex lock;
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bool locator_init_complete;
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struct work_struct locator_work;
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struct work_struct notifier_work;
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struct work_struct indack_work;
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struct workqueue_struct *notifier_wq;
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struct workqueue_struct *indack_wq;
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void (*status)(int state, char *service_path, void *priv);
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void *priv;
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};
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struct pdr_list_node {
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enum servreg_service_state curr_state;
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u16 transaction_id;
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struct pdr_service *pds;
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struct list_head node;
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};
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static int pdr_locator_new_server(struct qmi_handle *qmi,
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struct qmi_service *svc)
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{
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struct pdr_handle *pdr = container_of(qmi, struct pdr_handle,
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locator_hdl);
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struct pdr_service *pds;
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/* Create a local client port for QMI communication */
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pdr->locator_addr.sq_family = AF_QIPCRTR;
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pdr->locator_addr.sq_node = svc->node;
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pdr->locator_addr.sq_port = svc->port;
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mutex_lock(&pdr->lock);
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pdr->locator_init_complete = true;
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mutex_unlock(&pdr->lock);
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/* Service pending lookup requests */
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mutex_lock(&pdr->list_lock);
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list_for_each_entry(pds, &pdr->lookups, node) {
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if (pds->need_locator_lookup)
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schedule_work(&pdr->locator_work);
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}
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mutex_unlock(&pdr->list_lock);
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return 0;
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}
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static void pdr_locator_del_server(struct qmi_handle *qmi,
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struct qmi_service *svc)
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{
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struct pdr_handle *pdr = container_of(qmi, struct pdr_handle,
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locator_hdl);
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mutex_lock(&pdr->lock);
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pdr->locator_init_complete = false;
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mutex_unlock(&pdr->lock);
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pdr->locator_addr.sq_node = 0;
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pdr->locator_addr.sq_port = 0;
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}
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static const struct qmi_ops pdr_locator_ops = {
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.new_server = pdr_locator_new_server,
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.del_server = pdr_locator_del_server,
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};
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static int pdr_register_listener(struct pdr_handle *pdr,
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struct pdr_service *pds,
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bool enable)
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{
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struct servreg_register_listener_resp resp;
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struct servreg_register_listener_req req;
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struct qmi_txn txn;
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int ret;
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ret = qmi_txn_init(&pdr->notifier_hdl, &txn,
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servreg_register_listener_resp_ei,
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&resp);
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if (ret < 0)
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return ret;
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req.enable = enable;
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strscpy(req.service_path, pds->service_path, sizeof(req.service_path));
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ret = qmi_send_request(&pdr->notifier_hdl, &pds->addr,
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&txn, SERVREG_REGISTER_LISTENER_REQ,
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SERVREG_REGISTER_LISTENER_REQ_LEN,
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servreg_register_listener_req_ei,
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&req);
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if (ret < 0) {
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qmi_txn_cancel(&txn);
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return ret;
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}
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ret = qmi_txn_wait(&txn, 5 * HZ);
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if (ret < 0) {
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pr_err("PDR: %s register listener txn wait failed: %d\n",
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pds->service_path, ret);
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return ret;
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}
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if (resp.resp.result != QMI_RESULT_SUCCESS_V01) {
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pr_err("PDR: %s register listener failed: 0x%x\n",
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pds->service_path, resp.resp.error);
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return -EREMOTEIO;
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}
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pds->state = resp.curr_state;
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return 0;
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}
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static void pdr_notifier_work(struct work_struct *work)
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{
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struct pdr_handle *pdr = container_of(work, struct pdr_handle,
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notifier_work);
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struct pdr_service *pds;
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int ret;
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mutex_lock(&pdr->list_lock);
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list_for_each_entry(pds, &pdr->lookups, node) {
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if (pds->service_connected) {
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if (!pds->need_notifier_register)
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continue;
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pds->need_notifier_register = false;
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ret = pdr_register_listener(pdr, pds, true);
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if (ret < 0)
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pds->state = SERVREG_SERVICE_STATE_DOWN;
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} else {
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if (!pds->need_notifier_remove)
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continue;
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pds->need_notifier_remove = false;
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pds->state = SERVREG_SERVICE_STATE_DOWN;
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}
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mutex_lock(&pdr->status_lock);
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pdr->status(pds->state, pds->service_path, pdr->priv);
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mutex_unlock(&pdr->status_lock);
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}
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mutex_unlock(&pdr->list_lock);
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}
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static int pdr_notifier_new_server(struct qmi_handle *qmi,
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struct qmi_service *svc)
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{
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struct pdr_handle *pdr = container_of(qmi, struct pdr_handle,
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notifier_hdl);
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struct pdr_service *pds;
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mutex_lock(&pdr->list_lock);
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list_for_each_entry(pds, &pdr->lookups, node) {
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if (pds->service == svc->service &&
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pds->instance == svc->instance) {
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pds->service_connected = true;
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pds->need_notifier_register = true;
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pds->addr.sq_family = AF_QIPCRTR;
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pds->addr.sq_node = svc->node;
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pds->addr.sq_port = svc->port;
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queue_work(pdr->notifier_wq, &pdr->notifier_work);
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}
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}
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mutex_unlock(&pdr->list_lock);
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return 0;
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}
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static void pdr_notifier_del_server(struct qmi_handle *qmi,
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struct qmi_service *svc)
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{
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struct pdr_handle *pdr = container_of(qmi, struct pdr_handle,
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notifier_hdl);
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struct pdr_service *pds;
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mutex_lock(&pdr->list_lock);
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list_for_each_entry(pds, &pdr->lookups, node) {
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if (pds->service == svc->service &&
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pds->instance == svc->instance) {
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pds->service_connected = false;
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pds->need_notifier_remove = true;
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pds->addr.sq_node = 0;
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pds->addr.sq_port = 0;
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queue_work(pdr->notifier_wq, &pdr->notifier_work);
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}
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}
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mutex_unlock(&pdr->list_lock);
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}
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static const struct qmi_ops pdr_notifier_ops = {
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.new_server = pdr_notifier_new_server,
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.del_server = pdr_notifier_del_server,
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};
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static int pdr_send_indack_msg(struct pdr_handle *pdr, struct pdr_service *pds,
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u16 tid)
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{
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struct servreg_set_ack_resp resp;
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struct servreg_set_ack_req req;
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struct qmi_txn txn;
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int ret;
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ret = qmi_txn_init(&pdr->notifier_hdl, &txn, servreg_set_ack_resp_ei,
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&resp);
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if (ret < 0)
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return ret;
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req.transaction_id = tid;
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strscpy(req.service_path, pds->service_path, sizeof(req.service_path));
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ret = qmi_send_request(&pdr->notifier_hdl, &pds->addr,
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&txn, SERVREG_SET_ACK_REQ,
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SERVREG_SET_ACK_REQ_LEN,
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servreg_set_ack_req_ei,
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&req);
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/* Skip waiting for response */
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qmi_txn_cancel(&txn);
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return ret;
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}
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static void pdr_indack_work(struct work_struct *work)
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{
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struct pdr_handle *pdr = container_of(work, struct pdr_handle,
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indack_work);
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struct pdr_list_node *ind, *tmp;
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struct pdr_service *pds;
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list_for_each_entry_safe(ind, tmp, &pdr->indack_list, node) {
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pds = ind->pds;
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mutex_lock(&pdr->status_lock);
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pds->state = ind->curr_state;
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pdr->status(pds->state, pds->service_path, pdr->priv);
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mutex_unlock(&pdr->status_lock);
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/* Ack the indication after clients release the PD resources */
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pdr_send_indack_msg(pdr, pds, ind->transaction_id);
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mutex_lock(&pdr->list_lock);
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list_del(&ind->node);
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mutex_unlock(&pdr->list_lock);
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kfree(ind);
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}
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}
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static void pdr_indication_cb(struct qmi_handle *qmi,
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struct sockaddr_qrtr *sq,
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struct qmi_txn *txn, const void *data)
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{
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struct pdr_handle *pdr = container_of(qmi, struct pdr_handle,
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notifier_hdl);
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const struct servreg_state_updated_ind *ind_msg = data;
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struct pdr_list_node *ind;
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struct pdr_service *pds = NULL, *iter;
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if (!ind_msg || !ind_msg->service_path[0] ||
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strlen(ind_msg->service_path) > SERVREG_NAME_LENGTH)
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return;
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mutex_lock(&pdr->list_lock);
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list_for_each_entry(iter, &pdr->lookups, node) {
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if (strcmp(iter->service_path, ind_msg->service_path))
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continue;
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pds = iter;
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break;
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}
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mutex_unlock(&pdr->list_lock);
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if (!pds)
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return;
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pr_info("PDR: Indication received from %s, state: 0x%x, trans-id: %d\n",
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ind_msg->service_path, ind_msg->curr_state,
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ind_msg->transaction_id);
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ind = kzalloc(sizeof(*ind), GFP_KERNEL);
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if (!ind)
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return;
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ind->transaction_id = ind_msg->transaction_id;
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ind->curr_state = ind_msg->curr_state;
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ind->pds = pds;
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mutex_lock(&pdr->list_lock);
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list_add_tail(&ind->node, &pdr->indack_list);
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mutex_unlock(&pdr->list_lock);
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queue_work(pdr->indack_wq, &pdr->indack_work);
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}
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static const struct qmi_msg_handler qmi_indication_handler[] = {
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{
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.type = QMI_INDICATION,
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.msg_id = SERVREG_STATE_UPDATED_IND_ID,
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.ei = servreg_state_updated_ind_ei,
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.decoded_size = sizeof(struct servreg_state_updated_ind),
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.fn = pdr_indication_cb,
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},
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{}
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};
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static int pdr_get_domain_list(struct servreg_get_domain_list_req *req,
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struct servreg_get_domain_list_resp *resp,
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struct pdr_handle *pdr)
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{
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struct qmi_txn txn;
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int ret;
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ret = qmi_txn_init(&pdr->locator_hdl, &txn,
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servreg_get_domain_list_resp_ei, resp);
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if (ret < 0)
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return ret;
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ret = qmi_send_request(&pdr->locator_hdl,
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&pdr->locator_addr,
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&txn, SERVREG_GET_DOMAIN_LIST_REQ,
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SERVREG_GET_DOMAIN_LIST_REQ_MAX_LEN,
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servreg_get_domain_list_req_ei,
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req);
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if (ret < 0) {
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|
|
qmi_txn_cancel(&txn);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = qmi_txn_wait(&txn, 5 * HZ);
|
||
|
|
if (ret < 0) {
|
||
|
|
pr_err("PDR: %s get domain list txn wait failed: %d\n",
|
||
|
|
req->service_name, ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (resp->resp.result != QMI_RESULT_SUCCESS_V01) {
|
||
|
|
pr_err("PDR: %s get domain list failed: 0x%x\n",
|
||
|
|
req->service_name, resp->resp.error);
|
||
|
|
return -EREMOTEIO;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pdr_locate_service(struct pdr_handle *pdr, struct pdr_service *pds)
|
||
|
|
{
|
||
|
|
struct servreg_get_domain_list_resp *resp;
|
||
|
|
struct servreg_get_domain_list_req req;
|
||
|
|
struct servreg_location_entry *entry;
|
||
|
|
int domains_read = 0;
|
||
|
|
int ret, i;
|
||
|
|
|
||
|
|
resp = kzalloc(sizeof(*resp), GFP_KERNEL);
|
||
|
|
if (!resp)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
/* Prepare req message */
|
||
|
|
strscpy(req.service_name, pds->service_name, sizeof(req.service_name));
|
||
|
|
req.domain_offset_valid = true;
|
||
|
|
req.domain_offset = 0;
|
||
|
|
|
||
|
|
do {
|
||
|
|
req.domain_offset = domains_read;
|
||
|
|
ret = pdr_get_domain_list(&req, resp, pdr);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
for (i = domains_read; i < resp->domain_list_len; i++) {
|
||
|
|
entry = &resp->domain_list[i];
|
||
|
|
|
||
|
|
if (strnlen(entry->name, sizeof(entry->name)) == sizeof(entry->name))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
if (!strcmp(entry->name, pds->service_path)) {
|
||
|
|
pds->service_data_valid = entry->service_data_valid;
|
||
|
|
pds->service_data = entry->service_data;
|
||
|
|
pds->instance = entry->instance;
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Update ret to indicate that the service is not yet found */
|
||
|
|
ret = -ENXIO;
|
||
|
|
|
||
|
|
/* Always read total_domains from the response msg */
|
||
|
|
if (resp->domain_list_len > resp->total_domains)
|
||
|
|
resp->domain_list_len = resp->total_domains;
|
||
|
|
|
||
|
|
domains_read += resp->domain_list_len;
|
||
|
|
} while (domains_read < resp->total_domains);
|
||
|
|
out:
|
||
|
|
kfree(resp);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void pdr_notify_lookup_failure(struct pdr_handle *pdr,
|
||
|
|
struct pdr_service *pds,
|
||
|
|
int err)
|
||
|
|
{
|
||
|
|
pr_err("PDR: service lookup for %s failed: %d\n",
|
||
|
|
pds->service_name, err);
|
||
|
|
|
||
|
|
if (err == -ENXIO)
|
||
|
|
return;
|
||
|
|
|
||
|
|
list_del(&pds->node);
|
||
|
|
pds->state = SERVREG_LOCATOR_ERR;
|
||
|
|
mutex_lock(&pdr->status_lock);
|
||
|
|
pdr->status(pds->state, pds->service_path, pdr->priv);
|
||
|
|
mutex_unlock(&pdr->status_lock);
|
||
|
|
kfree(pds);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void pdr_locator_work(struct work_struct *work)
|
||
|
|
{
|
||
|
|
struct pdr_handle *pdr = container_of(work, struct pdr_handle,
|
||
|
|
locator_work);
|
||
|
|
struct pdr_service *pds, *tmp;
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
/* Bail out early if the SERVREG LOCATOR QMI service is not up */
|
||
|
|
mutex_lock(&pdr->lock);
|
||
|
|
if (!pdr->locator_init_complete) {
|
||
|
|
mutex_unlock(&pdr->lock);
|
||
|
|
pr_debug("PDR: SERVICE LOCATOR service not available\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
mutex_unlock(&pdr->lock);
|
||
|
|
|
||
|
|
mutex_lock(&pdr->list_lock);
|
||
|
|
list_for_each_entry_safe(pds, tmp, &pdr->lookups, node) {
|
||
|
|
if (!pds->need_locator_lookup)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
ret = pdr_locate_service(pdr, pds);
|
||
|
|
if (ret < 0) {
|
||
|
|
pdr_notify_lookup_failure(pdr, pds, ret);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = qmi_add_lookup(&pdr->notifier_hdl, pds->service, 1,
|
||
|
|
pds->instance);
|
||
|
|
if (ret < 0) {
|
||
|
|
pdr_notify_lookup_failure(pdr, pds, ret);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
pds->need_locator_lookup = false;
|
||
|
|
}
|
||
|
|
mutex_unlock(&pdr->list_lock);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* pdr_add_lookup() - register a tracking request for a PD
|
||
|
|
* @pdr: PDR client handle
|
||
|
|
* @service_name: service name of the tracking request
|
||
|
|
* @service_path: service path of the tracking request
|
||
|
|
*
|
||
|
|
* Registering a pdr lookup allows for tracking the life cycle of the PD.
|
||
|
|
*
|
||
|
|
* Return: pdr_service object on success, ERR_PTR on failure. -EALREADY is
|
||
|
|
* returned if a lookup is already in progress for the given service path.
|
||
|
|
*/
|
||
|
|
struct pdr_service *pdr_add_lookup(struct pdr_handle *pdr,
|
||
|
|
const char *service_name,
|
||
|
|
const char *service_path)
|
||
|
|
{
|
||
|
|
struct pdr_service *pds, *tmp;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (IS_ERR_OR_NULL(pdr))
|
||
|
|
return ERR_PTR(-EINVAL);
|
||
|
|
|
||
|
|
if (!service_name || strlen(service_name) > SERVREG_NAME_LENGTH ||
|
||
|
|
!service_path || strlen(service_path) > SERVREG_NAME_LENGTH)
|
||
|
|
return ERR_PTR(-EINVAL);
|
||
|
|
|
||
|
|
pds = kzalloc(sizeof(*pds), GFP_KERNEL);
|
||
|
|
if (!pds)
|
||
|
|
return ERR_PTR(-ENOMEM);
|
||
|
|
|
||
|
|
pds->service = SERVREG_NOTIFIER_SERVICE;
|
||
|
|
strscpy(pds->service_name, service_name, sizeof(pds->service_name));
|
||
|
|
strscpy(pds->service_path, service_path, sizeof(pds->service_path));
|
||
|
|
pds->need_locator_lookup = true;
|
||
|
|
|
||
|
|
mutex_lock(&pdr->list_lock);
|
||
|
|
list_for_each_entry(tmp, &pdr->lookups, node) {
|
||
|
|
if (strcmp(tmp->service_path, service_path))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
mutex_unlock(&pdr->list_lock);
|
||
|
|
ret = -EALREADY;
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
|
||
|
|
list_add(&pds->node, &pdr->lookups);
|
||
|
|
mutex_unlock(&pdr->list_lock);
|
||
|
|
|
||
|
|
schedule_work(&pdr->locator_work);
|
||
|
|
|
||
|
|
return pds;
|
||
|
|
err:
|
||
|
|
kfree(pds);
|
||
|
|
return ERR_PTR(ret);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(pdr_add_lookup);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* pdr_restart_pd() - restart PD
|
||
|
|
* @pdr: PDR client handle
|
||
|
|
* @pds: PD service handle
|
||
|
|
*
|
||
|
|
* Restarts the PD tracked by the PDR client handle for a given service path.
|
||
|
|
*
|
||
|
|
* Return: 0 on success, negative errno on failure.
|
||
|
|
*/
|
||
|
|
int pdr_restart_pd(struct pdr_handle *pdr, struct pdr_service *pds)
|
||
|
|
{
|
||
|
|
struct servreg_restart_pd_resp resp;
|
||
|
|
struct servreg_restart_pd_req req = { 0 };
|
||
|
|
struct sockaddr_qrtr addr;
|
||
|
|
struct pdr_service *tmp;
|
||
|
|
struct qmi_txn txn;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (IS_ERR_OR_NULL(pdr) || IS_ERR_OR_NULL(pds))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
mutex_lock(&pdr->list_lock);
|
||
|
|
list_for_each_entry(tmp, &pdr->lookups, node) {
|
||
|
|
if (tmp != pds)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
if (!pds->service_connected)
|
||
|
|
break;
|
||
|
|
|
||
|
|
/* Prepare req message */
|
||
|
|
strscpy(req.service_path, pds->service_path, sizeof(req.service_path));
|
||
|
|
addr = pds->addr;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
mutex_unlock(&pdr->list_lock);
|
||
|
|
|
||
|
|
if (!req.service_path[0])
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
ret = qmi_txn_init(&pdr->notifier_hdl, &txn,
|
||
|
|
servreg_restart_pd_resp_ei,
|
||
|
|
&resp);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
ret = qmi_send_request(&pdr->notifier_hdl, &addr,
|
||
|
|
&txn, SERVREG_RESTART_PD_REQ,
|
||
|
|
SERVREG_RESTART_PD_REQ_MAX_LEN,
|
||
|
|
servreg_restart_pd_req_ei, &req);
|
||
|
|
if (ret < 0) {
|
||
|
|
qmi_txn_cancel(&txn);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = qmi_txn_wait(&txn, 5 * HZ);
|
||
|
|
if (ret < 0) {
|
||
|
|
pr_err("PDR: %s PD restart txn wait failed: %d\n",
|
||
|
|
req.service_path, ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check response if PDR is disabled */
|
||
|
|
if (resp.resp.result == QMI_RESULT_FAILURE_V01 &&
|
||
|
|
resp.resp.error == QMI_ERR_DISABLED_V01) {
|
||
|
|
pr_err("PDR: %s PD restart is disabled: 0x%x\n",
|
||
|
|
req.service_path, resp.resp.error);
|
||
|
|
return -EOPNOTSUPP;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check the response for other error case*/
|
||
|
|
if (resp.resp.result != QMI_RESULT_SUCCESS_V01) {
|
||
|
|
pr_err("PDR: %s request for PD restart failed: 0x%x\n",
|
||
|
|
req.service_path, resp.resp.error);
|
||
|
|
return -EREMOTEIO;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(pdr_restart_pd);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* pdr_handle_alloc() - initialize the PDR client handle
|
||
|
|
* @status: function to be called on PD state change
|
||
|
|
* @priv: handle for client's use
|
||
|
|
*
|
||
|
|
* Initializes the PDR client handle to allow for tracking/restart of PDs.
|
||
|
|
*
|
||
|
|
* Return: pdr_handle object on success, ERR_PTR on failure.
|
||
|
|
*/
|
||
|
|
struct pdr_handle *pdr_handle_alloc(void (*status)(int state,
|
||
|
|
char *service_path,
|
||
|
|
void *priv), void *priv)
|
||
|
|
{
|
||
|
|
struct pdr_handle *pdr;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (!status)
|
||
|
|
return ERR_PTR(-EINVAL);
|
||
|
|
|
||
|
|
pdr = kzalloc(sizeof(*pdr), GFP_KERNEL);
|
||
|
|
if (!pdr)
|
||
|
|
return ERR_PTR(-ENOMEM);
|
||
|
|
|
||
|
|
pdr->status = status;
|
||
|
|
pdr->priv = priv;
|
||
|
|
|
||
|
|
mutex_init(&pdr->status_lock);
|
||
|
|
mutex_init(&pdr->list_lock);
|
||
|
|
mutex_init(&pdr->lock);
|
||
|
|
|
||
|
|
INIT_LIST_HEAD(&pdr->lookups);
|
||
|
|
INIT_LIST_HEAD(&pdr->indack_list);
|
||
|
|
|
||
|
|
INIT_WORK(&pdr->locator_work, pdr_locator_work);
|
||
|
|
INIT_WORK(&pdr->notifier_work, pdr_notifier_work);
|
||
|
|
INIT_WORK(&pdr->indack_work, pdr_indack_work);
|
||
|
|
|
||
|
|
pdr->notifier_wq = create_singlethread_workqueue("pdr_notifier_wq");
|
||
|
|
if (!pdr->notifier_wq) {
|
||
|
|
ret = -ENOMEM;
|
||
|
|
goto free_pdr_handle;
|
||
|
|
}
|
||
|
|
|
||
|
|
pdr->indack_wq = alloc_ordered_workqueue("pdr_indack_wq", WQ_HIGHPRI);
|
||
|
|
if (!pdr->indack_wq) {
|
||
|
|
ret = -ENOMEM;
|
||
|
|
goto destroy_notifier;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = qmi_handle_init(&pdr->locator_hdl,
|
||
|
|
SERVREG_GET_DOMAIN_LIST_RESP_MAX_LEN,
|
||
|
|
&pdr_locator_ops, NULL);
|
||
|
|
if (ret < 0)
|
||
|
|
goto destroy_indack;
|
||
|
|
|
||
|
|
ret = qmi_add_lookup(&pdr->locator_hdl, SERVREG_LOCATOR_SERVICE, 1, 1);
|
||
|
|
if (ret < 0)
|
||
|
|
goto release_qmi_handle;
|
||
|
|
|
||
|
|
ret = qmi_handle_init(&pdr->notifier_hdl,
|
||
|
|
SERVREG_STATE_UPDATED_IND_MAX_LEN,
|
||
|
|
&pdr_notifier_ops,
|
||
|
|
qmi_indication_handler);
|
||
|
|
if (ret < 0)
|
||
|
|
goto release_qmi_handle;
|
||
|
|
|
||
|
|
return pdr;
|
||
|
|
|
||
|
|
release_qmi_handle:
|
||
|
|
qmi_handle_release(&pdr->locator_hdl);
|
||
|
|
destroy_indack:
|
||
|
|
destroy_workqueue(pdr->indack_wq);
|
||
|
|
destroy_notifier:
|
||
|
|
destroy_workqueue(pdr->notifier_wq);
|
||
|
|
free_pdr_handle:
|
||
|
|
kfree(pdr);
|
||
|
|
|
||
|
|
return ERR_PTR(ret);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(pdr_handle_alloc);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* pdr_handle_release() - release the PDR client handle
|
||
|
|
* @pdr: PDR client handle
|
||
|
|
*
|
||
|
|
* Cleans up pending tracking requests and releases the underlying qmi handles.
|
||
|
|
*/
|
||
|
|
void pdr_handle_release(struct pdr_handle *pdr)
|
||
|
|
{
|
||
|
|
struct pdr_service *pds, *tmp;
|
||
|
|
|
||
|
|
if (IS_ERR_OR_NULL(pdr))
|
||
|
|
return;
|
||
|
|
|
||
|
|
mutex_lock(&pdr->list_lock);
|
||
|
|
list_for_each_entry_safe(pds, tmp, &pdr->lookups, node) {
|
||
|
|
list_del(&pds->node);
|
||
|
|
kfree(pds);
|
||
|
|
}
|
||
|
|
mutex_unlock(&pdr->list_lock);
|
||
|
|
|
||
|
|
cancel_work_sync(&pdr->locator_work);
|
||
|
|
cancel_work_sync(&pdr->notifier_work);
|
||
|
|
cancel_work_sync(&pdr->indack_work);
|
||
|
|
|
||
|
|
destroy_workqueue(pdr->notifier_wq);
|
||
|
|
destroy_workqueue(pdr->indack_wq);
|
||
|
|
|
||
|
|
qmi_handle_release(&pdr->locator_hdl);
|
||
|
|
qmi_handle_release(&pdr->notifier_hdl);
|
||
|
|
|
||
|
|
kfree(pdr);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(pdr_handle_release);
|
||
|
|
|
||
|
|
MODULE_LICENSE("GPL v2");
|
||
|
|
MODULE_DESCRIPTION("Qualcomm Protection Domain Restart helpers");
|