--- /dev/null
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright (c) 2015, Sony Mobile Communications Inc.
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2020, Linaro Ltd.
+ */
+
+#include <linux/module.h>
+#include <linux/qrtr.h>
+#include <linux/workqueue.h>
+#include <net/sock.h>
+
+#include "qrtr.h"
+
+static RADIX_TREE(nodes, GFP_KERNEL);
+
+static struct {
+ struct socket *sock;
+ struct sockaddr_qrtr bcast_sq;
+ struct list_head lookups;
+ struct workqueue_struct *workqueue;
+ struct work_struct work;
+ int local_node;
+} qrtr_ns;
+
+static const char * const qrtr_ctrl_pkt_strings[] = {
+ [QRTR_TYPE_HELLO] = "hello",
+ [QRTR_TYPE_BYE] = "bye",
+ [QRTR_TYPE_NEW_SERVER] = "new-server",
+ [QRTR_TYPE_DEL_SERVER] = "del-server",
+ [QRTR_TYPE_DEL_CLIENT] = "del-client",
+ [QRTR_TYPE_RESUME_TX] = "resume-tx",
+ [QRTR_TYPE_EXIT] = "exit",
+ [QRTR_TYPE_PING] = "ping",
+ [QRTR_TYPE_NEW_LOOKUP] = "new-lookup",
+ [QRTR_TYPE_DEL_LOOKUP] = "del-lookup",
+};
+
+struct qrtr_server_filter {
+ unsigned int service;
+ unsigned int instance;
+ unsigned int ifilter;
+};
+
+struct qrtr_lookup {
+ unsigned int service;
+ unsigned int instance;
+
+ struct sockaddr_qrtr sq;
+ struct list_head li;
+};
+
+struct qrtr_server {
+ unsigned int service;
+ unsigned int instance;
+
+ unsigned int node;
+ unsigned int port;
+
+ struct list_head qli;
+};
+
+struct qrtr_node {
+ unsigned int id;
+ struct radix_tree_root servers;
+};
+
+static struct qrtr_node *node_get(unsigned int node_id)
+{
+ struct qrtr_node *node;
+
+ node = radix_tree_lookup(&nodes, node_id);
+ if (node)
+ return node;
+
+ /* If node didn't exist, allocate and insert it to the tree */
+ node = kzalloc(sizeof(*node), GFP_KERNEL);
+ if (!node)
+ return ERR_PTR(-ENOMEM);
+
+ node->id = node_id;
+
+ radix_tree_insert(&nodes, node_id, node);
+
+ return node;
+}
+
+static int server_match(const struct qrtr_server *srv,
+ const struct qrtr_server_filter *f)
+{
+ unsigned int ifilter = f->ifilter;
+
+ if (f->service != 0 && srv->service != f->service)
+ return 0;
+ if (!ifilter && f->instance)
+ ifilter = ~0;
+
+ return (srv->instance & ifilter) == f->instance;
+}
+
+static int service_announce_new(struct sockaddr_qrtr *dest,
+ struct qrtr_server *srv)
+{
+ struct qrtr_ctrl_pkt pkt;
+ struct msghdr msg = { };
+ struct kvec iv;
+
+ trace_printk("advertising new server [%d:%x]@[%d:%d]\n",
+ srv->service, srv->instance, srv->node, srv->port);
+
+ iv.iov_base = &pkt;
+ iv.iov_len = sizeof(pkt);
+
+ memset(&pkt, 0, sizeof(pkt));
+ pkt.cmd = cpu_to_le32(QRTR_TYPE_NEW_SERVER);
+ pkt.server.service = cpu_to_le32(srv->service);
+ pkt.server.instance = cpu_to_le32(srv->instance);
+ pkt.server.node = cpu_to_le32(srv->node);
+ pkt.server.port = cpu_to_le32(srv->port);
+
+ msg.msg_name = (struct sockaddr *)dest;
+ msg.msg_namelen = sizeof(*dest);
+
+ return kernel_sendmsg(qrtr_ns.sock, &msg, &iv, 1, sizeof(pkt));
+}
+
+static int service_announce_del(struct sockaddr_qrtr *dest,
+ struct qrtr_server *srv)
+{
+ struct qrtr_ctrl_pkt pkt;
+ struct msghdr msg = { };
+ struct kvec iv;
+ int ret;
+
+ trace_printk("advertising removal of server [%d:%x]@[%d:%d]\n",
+ srv->service, srv->instance, srv->node, srv->port);
+
+ iv.iov_base = &pkt;
+ iv.iov_len = sizeof(pkt);
+
+ memset(&pkt, 0, sizeof(pkt));
+ pkt.cmd = cpu_to_le32(QRTR_TYPE_DEL_SERVER);
+ pkt.server.service = cpu_to_le32(srv->service);
+ pkt.server.instance = cpu_to_le32(srv->instance);
+ pkt.server.node = cpu_to_le32(srv->node);
+ pkt.server.port = cpu_to_le32(srv->port);
+
+ msg.msg_name = (struct sockaddr *)dest;
+ msg.msg_namelen = sizeof(*dest);
+
+ ret = kernel_sendmsg(qrtr_ns.sock, &msg, &iv, 1, sizeof(pkt));
+ if (ret < 0)
+ pr_err("failed to announce del serivce\n");
+
+ return ret;
+}
+
+static void lookup_notify(struct sockaddr_qrtr *to, struct qrtr_server *srv,
+ bool new)
+{
+ struct qrtr_ctrl_pkt pkt;
+ struct msghdr msg = { };
+ struct kvec iv;
+ int ret;
+
+ iv.iov_base = &pkt;
+ iv.iov_len = sizeof(pkt);
+
+ memset(&pkt, 0, sizeof(pkt));
+ pkt.cmd = new ? cpu_to_le32(QRTR_TYPE_NEW_SERVER) :
+ cpu_to_le32(QRTR_TYPE_DEL_SERVER);
+ if (srv) {
+ pkt.server.service = cpu_to_le32(srv->service);
+ pkt.server.instance = cpu_to_le32(srv->instance);
+ pkt.server.node = cpu_to_le32(srv->node);
+ pkt.server.port = cpu_to_le32(srv->port);
+ }
+
+ msg.msg_name = (struct sockaddr *)to;
+ msg.msg_namelen = sizeof(*to);
+
+ ret = kernel_sendmsg(qrtr_ns.sock, &msg, &iv, 1, sizeof(pkt));
+ if (ret < 0)
+ pr_err("failed to send lookup notification\n");
+}
+
+static int announce_servers(struct sockaddr_qrtr *sq)
+{
+ struct radix_tree_iter iter;
+ struct qrtr_server *srv;
+ struct qrtr_node *node;
+ void __rcu **slot;
+ int ret;
+
+ node = node_get(qrtr_ns.local_node);
+ if (!node)
+ return 0;
+
+ /* Announce the list of servers registered in this node */
+ radix_tree_for_each_slot(slot, &node->servers, &iter, 0) {
+ srv = radix_tree_deref_slot(slot);
+
+ ret = service_announce_new(sq, srv);
+ if (ret < 0) {
+ pr_err("failed to announce new service\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static struct qrtr_server *server_add(unsigned int service,
+ unsigned int instance,
+ unsigned int node_id,
+ unsigned int port)
+{
+ struct qrtr_server *srv;
+ struct qrtr_server *old;
+ struct qrtr_node *node;
+
+ if (!service || !port)
+ return NULL;
+
+ srv = kzalloc(sizeof(*srv), GFP_KERNEL);
+ if (!srv)
+ return ERR_PTR(-ENOMEM);
+
+ srv->service = service;
+ srv->instance = instance;
+ srv->node = node_id;
+ srv->port = port;
+
+ node = node_get(node_id);
+ if (!node)
+ goto err;
+
+ /* Delete the old server on the same port */
+ old = radix_tree_lookup(&node->servers, port);
+ if (old) {
+ radix_tree_delete(&node->servers, port);
+ kfree(old);
+ }
+
+ radix_tree_insert(&node->servers, port, srv);
+
+ trace_printk("add server [%d:%x]@[%d:%d]\n", srv->service,
+ srv->instance, srv->node, srv->port);
+
+ return srv;
+
+err:
+ kfree(srv);
+ return NULL;
+}
+
+static int server_del(struct qrtr_node *node, unsigned int port)
+{
+ struct qrtr_lookup *lookup;
+ struct qrtr_server *srv;
+ struct list_head *li;
+
+ srv = radix_tree_lookup(&node->servers, port);
+ if (!srv)
+ return -ENOENT;
+
+ radix_tree_delete(&node->servers, port);
+
+ /* Broadcast the removal of local servers */
+ if (srv->node == qrtr_ns.local_node)
+ service_announce_del(&qrtr_ns.bcast_sq, srv);
+
+ /* Announce the service's disappearance to observers */
+ list_for_each(li, &qrtr_ns.lookups) {
+ lookup = container_of(li, struct qrtr_lookup, li);
+ if (lookup->service && lookup->service != srv->service)
+ continue;
+ if (lookup->instance && lookup->instance != srv->instance)
+ continue;
+
+ lookup_notify(&lookup->sq, srv, false);
+ }
+
+ kfree(srv);
+
+ return 0;
+}
+
+/* Announce the list of servers registered on the local node */
+static int ctrl_cmd_hello(struct sockaddr_qrtr *sq)
+{
+ return announce_servers(sq);
+}
+
+static int ctrl_cmd_bye(struct sockaddr_qrtr *from)
+{
+ struct qrtr_node *local_node;
+ struct radix_tree_iter iter;
+ struct qrtr_ctrl_pkt pkt;
+ struct qrtr_server *srv;
+ struct sockaddr_qrtr sq;
+ struct msghdr msg = { };
+ struct qrtr_node *node;
+ void __rcu **slot;
+ struct kvec iv;
+ int ret;
+
+ iv.iov_base = &pkt;
+ iv.iov_len = sizeof(pkt);
+
+ node = node_get(from->sq_node);
+ if (!node)
+ return 0;
+
+ /* Advertise removal of this client to all servers of remote node */
+ radix_tree_for_each_slot(slot, &node->servers, &iter, 0) {
+ srv = radix_tree_deref_slot(slot);
+ server_del(node, srv->port);
+ }
+
+ /* Advertise the removal of this client to all local servers */
+ local_node = node_get(qrtr_ns.local_node);
+ if (!local_node)
+ return 0;
+
+ memset(&pkt, 0, sizeof(pkt));
+ pkt.cmd = cpu_to_le32(QRTR_TYPE_BYE);
+ pkt.client.node = cpu_to_le32(from->sq_node);
+
+ radix_tree_for_each_slot(slot, &local_node->servers, &iter, 0) {
+ srv = radix_tree_deref_slot(slot);
+
+ sq.sq_family = AF_QIPCRTR;
+ sq.sq_node = srv->node;
+ sq.sq_port = srv->port;
+
+ msg.msg_name = (struct sockaddr *)&sq;
+ msg.msg_namelen = sizeof(sq);
+
+ ret = kernel_sendmsg(qrtr_ns.sock, &msg, &iv, 1, sizeof(pkt));
+ if (ret < 0) {
+ pr_err("failed to send bye cmd\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int ctrl_cmd_del_client(struct sockaddr_qrtr *from,
+ unsigned int node_id, unsigned int port)
+{
+ struct qrtr_node *local_node;
+ struct radix_tree_iter iter;
+ struct qrtr_lookup *lookup;
+ struct qrtr_ctrl_pkt pkt;
+ struct msghdr msg = { };
+ struct qrtr_server *srv;
+ struct sockaddr_qrtr sq;
+ struct qrtr_node *node;
+ struct list_head *tmp;
+ struct list_head *li;
+ void __rcu **slot;
+ struct kvec iv;
+ int ret;
+
+ iv.iov_base = &pkt;
+ iv.iov_len = sizeof(pkt);
+
+ /* Don't accept spoofed messages */
+ if (from->sq_node != node_id)
+ return -EINVAL;
+
+ /* Local DEL_CLIENT messages comes from the port being closed */
+ if (from->sq_node == qrtr_ns.local_node && from->sq_port != port)
+ return -EINVAL;
+
+ /* Remove any lookups by this client */
+ list_for_each_safe(li, tmp, &qrtr_ns.lookups) {
+ lookup = container_of(li, struct qrtr_lookup, li);
+ if (lookup->sq.sq_node != node_id)
+ continue;
+ if (lookup->sq.sq_port != port)
+ continue;
+
+ list_del(&lookup->li);
+ kfree(lookup);
+ }
+
+ /* Remove the server belonging to this port */
+ node = node_get(node_id);
+ if (node)
+ server_del(node, port);
+
+ /* Advertise the removal of this client to all local servers */
+ local_node = node_get(qrtr_ns.local_node);
+ if (!local_node)
+ return 0;
+
+ memset(&pkt, 0, sizeof(pkt));
+ pkt.cmd = cpu_to_le32(QRTR_TYPE_DEL_CLIENT);
+ pkt.client.node = cpu_to_le32(node_id);
+ pkt.client.port = cpu_to_le32(port);
+
+ radix_tree_for_each_slot(slot, &local_node->servers, &iter, 0) {
+ srv = radix_tree_deref_slot(slot);
+
+ sq.sq_family = AF_QIPCRTR;
+ sq.sq_node = srv->node;
+ sq.sq_port = srv->port;
+
+ msg.msg_name = (struct sockaddr *)&sq;
+ msg.msg_namelen = sizeof(sq);
+
+ ret = kernel_sendmsg(qrtr_ns.sock, &msg, &iv, 1, sizeof(pkt));
+ if (ret < 0) {
+ pr_err("failed to send del client cmd\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int ctrl_cmd_new_server(struct sockaddr_qrtr *from,
+ unsigned int service, unsigned int instance,
+ unsigned int node_id, unsigned int port)
+{
+ struct qrtr_lookup *lookup;
+ struct qrtr_server *srv;
+ struct list_head *li;
+ int ret = 0;
+
+ /* Ignore specified node and port for local servers */
+ if (from->sq_node == qrtr_ns.local_node) {
+ node_id = from->sq_node;
+ port = from->sq_port;
+ }
+
+ /* Don't accept spoofed messages */
+ if (from->sq_node != node_id)
+ return -EINVAL;
+
+ srv = server_add(service, instance, node_id, port);
+ if (!srv)
+ return -EINVAL;
+
+ if (srv->node == qrtr_ns.local_node) {
+ ret = service_announce_new(&qrtr_ns.bcast_sq, srv);
+ if (ret < 0) {
+ pr_err("failed to announce new service\n");
+ return ret;
+ }
+ }
+
+ /* Notify any potential lookups about the new server */
+ list_for_each(li, &qrtr_ns.lookups) {
+ lookup = container_of(li, struct qrtr_lookup, li);
+ if (lookup->service && lookup->service != service)
+ continue;
+ if (lookup->instance && lookup->instance != instance)
+ continue;
+
+ lookup_notify(&lookup->sq, srv, true);
+ }
+
+ return ret;
+}
+
+static int ctrl_cmd_del_server(struct sockaddr_qrtr *from,
+ unsigned int service, unsigned int instance,
+ unsigned int node_id, unsigned int port)
+{
+ struct qrtr_node *node;
+
+ /* Ignore specified node and port for local servers*/
+ if (from->sq_node == qrtr_ns.local_node) {
+ node_id = from->sq_node;
+ port = from->sq_port;
+ }
+
+ /* Don't accept spoofed messages */
+ if (from->sq_node != node_id)
+ return -EINVAL;
+
+ /* Local servers may only unregister themselves */
+ if (from->sq_node == qrtr_ns.local_node && from->sq_port != port)
+ return -EINVAL;
+
+ node = node_get(node_id);
+ if (!node)
+ return -ENOENT;
+
+ return server_del(node, port);
+}
+
+static int ctrl_cmd_new_lookup(struct sockaddr_qrtr *from,
+ unsigned int service, unsigned int instance)
+{
+ struct radix_tree_iter node_iter;
+ struct qrtr_server_filter filter;
+ struct radix_tree_iter srv_iter;
+ struct qrtr_lookup *lookup;
+ struct qrtr_node *node;
+ void __rcu **node_slot;
+ void __rcu **srv_slot;
+
+ /* Accept only local observers */
+ if (from->sq_node != qrtr_ns.local_node)
+ return -EINVAL;
+
+ lookup = kzalloc(sizeof(*lookup), GFP_KERNEL);
+ if (!lookup)
+ return -ENOMEM;
+
+ lookup->sq = *from;
+ lookup->service = service;
+ lookup->instance = instance;
+ list_add_tail(&lookup->li, &qrtr_ns.lookups);
+
+ memset(&filter, 0, sizeof(filter));
+ filter.service = service;
+ filter.instance = instance;
+
+ radix_tree_for_each_slot(node_slot, &nodes, &node_iter, 0) {
+ node = radix_tree_deref_slot(node_slot);
+
+ radix_tree_for_each_slot(srv_slot, &node->servers,
+ &srv_iter, 0) {
+ struct qrtr_server *srv;
+
+ srv = radix_tree_deref_slot(srv_slot);
+ if (!server_match(srv, &filter))
+ continue;
+
+ lookup_notify(from, srv, true);
+ }
+ }
+
+ /* Empty notification, to indicate end of listing */
+ lookup_notify(from, NULL, true);
+
+ return 0;
+}
+
+static void ctrl_cmd_del_lookup(struct sockaddr_qrtr *from,
+ unsigned int service, unsigned int instance)
+{
+ struct qrtr_lookup *lookup;
+ struct list_head *tmp;
+ struct list_head *li;
+
+ list_for_each_safe(li, tmp, &qrtr_ns.lookups) {
+ lookup = container_of(li, struct qrtr_lookup, li);
+ if (lookup->sq.sq_node != from->sq_node)
+ continue;
+ if (lookup->sq.sq_port != from->sq_port)
+ continue;
+ if (lookup->service != service)
+ continue;
+ if (lookup->instance && lookup->instance != instance)
+ continue;
+
+ list_del(&lookup->li);
+ kfree(lookup);
+ }
+}
+
+static int say_hello(void)
+{
+ struct qrtr_ctrl_pkt pkt;
+ struct msghdr msg = { };
+ struct kvec iv;
+ int ret;
+
+ iv.iov_base = &pkt;
+ iv.iov_len = sizeof(pkt);
+
+ memset(&pkt, 0, sizeof(pkt));
+ pkt.cmd = cpu_to_le32(QRTR_TYPE_HELLO);
+
+ msg.msg_name = (struct sockaddr *)&qrtr_ns.bcast_sq;
+ msg.msg_namelen = sizeof(qrtr_ns.bcast_sq);
+
+ ret = kernel_sendmsg(qrtr_ns.sock, &msg, &iv, 1, sizeof(pkt));
+ if (ret < 0)
+ pr_err("failed to send hello msg\n");
+
+ return ret;
+}
+
+static void qrtr_ns_worker(struct work_struct *work)
+{
+ const struct qrtr_ctrl_pkt *pkt;
+ size_t recv_buf_size = 4096;
+ struct sockaddr_qrtr sq;
+ struct msghdr msg = { };
+ unsigned int cmd;
+ ssize_t msglen;
+ void *recv_buf;
+ struct kvec iv;
+ int ret;
+
+ msg.msg_name = (struct sockaddr *)&sq;
+ msg.msg_namelen = sizeof(sq);
+
+ recv_buf = kzalloc(recv_buf_size, GFP_KERNEL);
+ if (!recv_buf)
+ return;
+
+ for (;;) {
+ iv.iov_base = recv_buf;
+ iv.iov_len = recv_buf_size;
+
+ msglen = kernel_recvmsg(qrtr_ns.sock, &msg, &iv, 1,
+ iv.iov_len, MSG_DONTWAIT);
+
+ if (msglen == -EAGAIN)
+ break;
+
+ if (msglen < 0) {
+ pr_err("error receiving packet: %zd\n", msglen);
+ break;
+ }
+
+ pkt = recv_buf;
+ cmd = le32_to_cpu(pkt->cmd);
+ if (cmd < ARRAY_SIZE(qrtr_ctrl_pkt_strings) &&
+ qrtr_ctrl_pkt_strings[cmd])
+ trace_printk("%s from %d:%d\n",
+ qrtr_ctrl_pkt_strings[cmd], sq.sq_node,
+ sq.sq_port);
+
+ ret = 0;
+ switch (cmd) {
+ case QRTR_TYPE_HELLO:
+ ret = ctrl_cmd_hello(&sq);
+ break;
+ case QRTR_TYPE_BYE:
+ ret = ctrl_cmd_bye(&sq);
+ break;
+ case QRTR_TYPE_DEL_CLIENT:
+ ret = ctrl_cmd_del_client(&sq,
+ le32_to_cpu(pkt->client.node),
+ le32_to_cpu(pkt->client.port));
+ break;
+ case QRTR_TYPE_NEW_SERVER:
+ ret = ctrl_cmd_new_server(&sq,
+ le32_to_cpu(pkt->server.service),
+ le32_to_cpu(pkt->server.instance),
+ le32_to_cpu(pkt->server.node),
+ le32_to_cpu(pkt->server.port));
+ break;
+ case QRTR_TYPE_DEL_SERVER:
+ ret = ctrl_cmd_del_server(&sq,
+ le32_to_cpu(pkt->server.service),
+ le32_to_cpu(pkt->server.instance),
+ le32_to_cpu(pkt->server.node),
+ le32_to_cpu(pkt->server.port));
+ break;
+ case QRTR_TYPE_EXIT:
+ case QRTR_TYPE_PING:
+ case QRTR_TYPE_RESUME_TX:
+ break;
+ case QRTR_TYPE_NEW_LOOKUP:
+ ret = ctrl_cmd_new_lookup(&sq,
+ le32_to_cpu(pkt->server.service),
+ le32_to_cpu(pkt->server.instance));
+ break;
+ case QRTR_TYPE_DEL_LOOKUP:
+ ctrl_cmd_del_lookup(&sq,
+ le32_to_cpu(pkt->server.service),
+ le32_to_cpu(pkt->server.instance));
+ break;
+ }
+
+ if (ret < 0)
+ pr_err("failed while handling packet from %d:%d",
+ sq.sq_node, sq.sq_port);
+ }
+
+ kfree(recv_buf);
+}
+
+static void qrtr_ns_data_ready(struct sock *sk)
+{
+ queue_work(qrtr_ns.workqueue, &qrtr_ns.work);
+}
+
+void qrtr_ns_init(struct work_struct *work)
+{
+ struct sockaddr_qrtr sq;
+ int ret;
+
+ INIT_LIST_HEAD(&qrtr_ns.lookups);
+ INIT_WORK(&qrtr_ns.work, qrtr_ns_worker);
+
+ ret = sock_create_kern(&init_net, AF_QIPCRTR, SOCK_DGRAM,
+ PF_QIPCRTR, &qrtr_ns.sock);
+ if (ret < 0)
+ return;
+
+ ret = kernel_getsockname(qrtr_ns.sock, (struct sockaddr *)&sq);
+ if (ret < 0) {
+ pr_err("failed to get socket name\n");
+ goto err_sock;
+ }
+
+ qrtr_ns.sock->sk->sk_data_ready = qrtr_ns_data_ready;
+
+ sq.sq_port = QRTR_PORT_CTRL;
+ qrtr_ns.local_node = sq.sq_node;
+
+ ret = kernel_bind(qrtr_ns.sock, (struct sockaddr *)&sq, sizeof(sq));
+ if (ret < 0) {
+ pr_err("failed to bind to socket\n");
+ goto err_sock;
+ }
+
+ qrtr_ns.bcast_sq.sq_family = AF_QIPCRTR;
+ qrtr_ns.bcast_sq.sq_node = QRTR_NODE_BCAST;
+ qrtr_ns.bcast_sq.sq_port = QRTR_PORT_CTRL;
+
+ qrtr_ns.workqueue = alloc_workqueue("qrtr_ns_handler", WQ_UNBOUND, 1);
+ if (!qrtr_ns.workqueue)
+ goto err_sock;
+
+ ret = say_hello();
+ if (ret < 0)
+ goto err_wq;
+
+ return;
+
+err_wq:
+ destroy_workqueue(qrtr_ns.workqueue);
+err_sock:
+ sock_release(qrtr_ns.sock);
+}
+EXPORT_SYMBOL_GPL(qrtr_ns_init);
+
+void qrtr_ns_remove(void)
+{
+ cancel_work_sync(&qrtr_ns.work);
+ destroy_workqueue(qrtr_ns.workqueue);
+ sock_release(qrtr_ns.sock);
+}
+EXPORT_SYMBOL_GPL(qrtr_ns_remove);
+
+MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>");
+MODULE_DESCRIPTION("Qualcomm IPC Router Nameservice");
+MODULE_LICENSE("Dual BSD/GPL");
projects / users / hch / configfs.git / commitdiff