390 lines
8.9 KiB
C
390 lines
8.9 KiB
C
/*
|
|
* Copyright (c) 2016 Intel Corporation.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <logging/log.h>
|
|
LOG_MODULE_REGISTER(net_mgmt, CONFIG_NET_MGMT_EVENT_LOG_LEVEL);
|
|
|
|
#include <kernel.h>
|
|
#include <toolchain.h>
|
|
#include <linker/sections.h>
|
|
|
|
#include <misc/util.h>
|
|
#include <misc/slist.h>
|
|
#include <net/net_mgmt.h>
|
|
|
|
#include "net_private.h"
|
|
|
|
struct mgmt_event_entry {
|
|
u32_t event;
|
|
struct net_if *iface;
|
|
|
|
#ifdef CONFIG_NET_MGMT_EVENT_INFO
|
|
u8_t info[NET_EVENT_INFO_MAX_SIZE];
|
|
size_t info_length;
|
|
#endif /* CONFIG_NET_MGMT_EVENT_INFO */
|
|
};
|
|
|
|
struct mgmt_event_wait {
|
|
struct k_sem sync_call;
|
|
struct net_if *iface;
|
|
};
|
|
|
|
static K_SEM_DEFINE(network_event, 0, UINT_MAX);
|
|
static K_SEM_DEFINE(net_mgmt_lock, 1, 1);
|
|
|
|
NET_STACK_DEFINE(MGMT, mgmt_stack, CONFIG_NET_MGMT_EVENT_STACK_SIZE,
|
|
CONFIG_NET_MGMT_EVENT_STACK_SIZE);
|
|
static struct k_thread mgmt_thread_data;
|
|
static struct mgmt_event_entry events[CONFIG_NET_MGMT_EVENT_QUEUE_SIZE];
|
|
static u32_t global_event_mask;
|
|
static sys_slist_t event_callbacks;
|
|
static s16_t in_event;
|
|
static s16_t out_event;
|
|
|
|
static inline void mgmt_push_event(u32_t mgmt_event, struct net_if *iface,
|
|
void *info, size_t length)
|
|
{
|
|
s16_t i_idx;
|
|
|
|
#ifndef CONFIG_NET_MGMT_EVENT_INFO
|
|
ARG_UNUSED(info);
|
|
ARG_UNUSED(length);
|
|
#endif /* CONFIG_NET_MGMT_EVENT_INFO */
|
|
|
|
k_sem_take(&net_mgmt_lock, K_FOREVER);
|
|
|
|
i_idx = in_event + 1;
|
|
if (i_idx == CONFIG_NET_MGMT_EVENT_QUEUE_SIZE) {
|
|
i_idx = 0;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_MGMT_EVENT_INFO
|
|
if (info && length) {
|
|
if (length <= NET_EVENT_INFO_MAX_SIZE) {
|
|
memcpy(events[i_idx].info, info, length);
|
|
events[i_idx].info_length = length;
|
|
} else {
|
|
NET_ERR("Event info length %zu > max size %zu",
|
|
length, NET_EVENT_INFO_MAX_SIZE);
|
|
k_sem_give(&net_mgmt_lock);
|
|
|
|
return;
|
|
}
|
|
} else {
|
|
events[i_idx].info_length = 0;
|
|
}
|
|
#endif /* CONFIG_NET_MGMT_EVENT_INFO */
|
|
|
|
events[i_idx].event = mgmt_event;
|
|
events[i_idx].iface = iface;
|
|
|
|
if (i_idx == out_event) {
|
|
u16_t o_idx = out_event + 1;
|
|
|
|
if (o_idx == CONFIG_NET_MGMT_EVENT_QUEUE_SIZE) {
|
|
o_idx = 0U;
|
|
}
|
|
|
|
if (events[o_idx].event) {
|
|
out_event = o_idx;
|
|
}
|
|
} else if (out_event < 0) {
|
|
out_event = i_idx;
|
|
}
|
|
|
|
in_event = i_idx;
|
|
|
|
k_sem_give(&net_mgmt_lock);
|
|
}
|
|
|
|
static inline struct mgmt_event_entry *mgmt_pop_event(void)
|
|
{
|
|
s16_t o_idx;
|
|
|
|
if (out_event < 0 || !events[out_event].event) {
|
|
return NULL;
|
|
}
|
|
|
|
o_idx = out_event;
|
|
out_event++;
|
|
|
|
if (o_idx == in_event) {
|
|
in_event = -1;
|
|
out_event = -1;
|
|
} else if (out_event == CONFIG_NET_MGMT_EVENT_QUEUE_SIZE) {
|
|
out_event = 0;
|
|
}
|
|
|
|
return &events[o_idx];
|
|
}
|
|
|
|
static inline void mgmt_clean_event(struct mgmt_event_entry *mgmt_event)
|
|
{
|
|
mgmt_event->event = 0U;
|
|
mgmt_event->iface = NULL;
|
|
}
|
|
|
|
static inline void mgmt_add_event_mask(u32_t event_mask)
|
|
{
|
|
global_event_mask |= event_mask;
|
|
}
|
|
|
|
static inline void mgmt_rebuild_global_event_mask(void)
|
|
{
|
|
struct net_mgmt_event_callback *cb, *tmp;
|
|
|
|
global_event_mask = 0U;
|
|
|
|
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&event_callbacks, cb, tmp, node) {
|
|
mgmt_add_event_mask(cb->event_mask);
|
|
}
|
|
}
|
|
|
|
static inline bool mgmt_is_event_handled(u32_t mgmt_event)
|
|
{
|
|
return (((NET_MGMT_GET_LAYER(mgmt_event) &
|
|
NET_MGMT_GET_LAYER(global_event_mask)) ==
|
|
NET_MGMT_GET_LAYER(mgmt_event)) &&
|
|
((NET_MGMT_GET_LAYER_CODE(mgmt_event) &
|
|
NET_MGMT_GET_LAYER_CODE(global_event_mask)) ==
|
|
NET_MGMT_GET_LAYER_CODE(mgmt_event)) &&
|
|
((NET_MGMT_GET_COMMAND(mgmt_event) &
|
|
NET_MGMT_GET_COMMAND(global_event_mask)) ==
|
|
NET_MGMT_GET_COMMAND(mgmt_event)));
|
|
}
|
|
|
|
static inline void mgmt_run_callbacks(struct mgmt_event_entry *mgmt_event)
|
|
{
|
|
sys_snode_t *prev = NULL;
|
|
struct net_mgmt_event_callback *cb, *tmp;
|
|
|
|
NET_DBG("Event layer %u code %u cmd %u",
|
|
NET_MGMT_GET_LAYER(mgmt_event->event),
|
|
NET_MGMT_GET_LAYER_CODE(mgmt_event->event),
|
|
NET_MGMT_GET_COMMAND(mgmt_event->event));
|
|
|
|
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&event_callbacks, cb, tmp, node) {
|
|
if (!(NET_MGMT_GET_LAYER(mgmt_event->event) ==
|
|
NET_MGMT_GET_LAYER(cb->event_mask)) ||
|
|
!(NET_MGMT_GET_LAYER_CODE(mgmt_event->event) ==
|
|
NET_MGMT_GET_LAYER_CODE(cb->event_mask)) ||
|
|
(NET_MGMT_GET_COMMAND(mgmt_event->event) &&
|
|
NET_MGMT_GET_COMMAND(cb->event_mask) &&
|
|
!(NET_MGMT_GET_COMMAND(mgmt_event->event) &
|
|
NET_MGMT_GET_COMMAND(cb->event_mask)))) {
|
|
continue;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_MGMT_EVENT_INFO
|
|
if (mgmt_event->info_length) {
|
|
cb->info = (void *)mgmt_event->info;
|
|
} else {
|
|
cb->info = NULL;
|
|
}
|
|
#endif /* CONFIG_NET_MGMT_EVENT_INFO */
|
|
|
|
if (NET_MGMT_EVENT_SYNCHRONOUS(cb->event_mask)) {
|
|
struct mgmt_event_wait *sync_data =
|
|
CONTAINER_OF(cb->sync_call,
|
|
struct mgmt_event_wait, sync_call);
|
|
|
|
if (sync_data->iface &&
|
|
sync_data->iface != mgmt_event->iface) {
|
|
continue;
|
|
}
|
|
|
|
NET_DBG("Unlocking %p synchronous call", cb);
|
|
|
|
cb->raised_event = mgmt_event->event;
|
|
sync_data->iface = mgmt_event->iface;
|
|
|
|
sys_slist_remove(&event_callbacks, prev, &cb->node);
|
|
|
|
k_sem_give(cb->sync_call);
|
|
} else {
|
|
NET_DBG("Running callback %p : %p",
|
|
cb, cb->handler);
|
|
|
|
cb->handler(cb, mgmt_event->event, mgmt_event->iface);
|
|
prev = &cb->node;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_NET_DEBUG_MGMT_EVENT_STACK
|
|
net_analyze_stack("Net MGMT event stack",
|
|
K_THREAD_STACK_BUFFER(mgmt_stack),
|
|
K_THREAD_STACK_SIZEOF(mgmt_stack));
|
|
#endif
|
|
}
|
|
|
|
static void mgmt_thread(void)
|
|
{
|
|
struct mgmt_event_entry *mgmt_event;
|
|
|
|
while (1) {
|
|
k_sem_take(&network_event, K_FOREVER);
|
|
k_sem_take(&net_mgmt_lock, K_FOREVER);
|
|
|
|
NET_DBG("Handling events, forwarding it relevantly");
|
|
|
|
mgmt_event = mgmt_pop_event();
|
|
if (!mgmt_event) {
|
|
/* System is over-loaded?
|
|
* At this point we have most probably notified
|
|
* more events than we could handle
|
|
*/
|
|
NET_DBG("Some event got probably lost (%u)",
|
|
k_sem_count_get(&network_event));
|
|
|
|
k_sem_init(&network_event, 0, UINT_MAX);
|
|
k_sem_give(&net_mgmt_lock);
|
|
|
|
continue;
|
|
}
|
|
|
|
mgmt_run_callbacks(mgmt_event);
|
|
|
|
mgmt_clean_event(mgmt_event);
|
|
|
|
k_sem_give(&net_mgmt_lock);
|
|
|
|
k_yield();
|
|
}
|
|
}
|
|
|
|
static int mgmt_event_wait_call(struct net_if *iface,
|
|
u32_t mgmt_event_mask,
|
|
u32_t *raised_event,
|
|
struct net_if **event_iface,
|
|
const void **info,
|
|
int timeout)
|
|
{
|
|
struct mgmt_event_wait sync_data = {
|
|
.sync_call = _K_SEM_INITIALIZER(sync_data.sync_call, 0, 1),
|
|
};
|
|
struct net_mgmt_event_callback sync = {
|
|
.sync_call = &sync_data.sync_call,
|
|
.event_mask = mgmt_event_mask | NET_MGMT_SYNC_EVENT_BIT,
|
|
};
|
|
int ret;
|
|
|
|
if (iface) {
|
|
sync_data.iface = iface;
|
|
}
|
|
|
|
NET_DBG("Synchronous event 0x%08x wait %p", sync.event_mask, &sync);
|
|
|
|
net_mgmt_add_event_callback(&sync);
|
|
|
|
ret = k_sem_take(sync.sync_call, timeout);
|
|
if (ret == -EAGAIN) {
|
|
ret = -ETIMEDOUT;
|
|
} else {
|
|
if (!ret) {
|
|
if (raised_event) {
|
|
*raised_event = sync.raised_event;
|
|
}
|
|
|
|
if (event_iface) {
|
|
*event_iface = sync_data.iface;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_MGMT_EVENT_INFO
|
|
if (info) {
|
|
*info = sync.info;
|
|
}
|
|
#endif /* CONFIG_NET_MGMT_EVENT_INFO */
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void net_mgmt_add_event_callback(struct net_mgmt_event_callback *cb)
|
|
{
|
|
NET_DBG("Adding event callback %p", cb);
|
|
|
|
k_sem_take(&net_mgmt_lock, K_FOREVER);
|
|
|
|
sys_slist_prepend(&event_callbacks, &cb->node);
|
|
|
|
mgmt_add_event_mask(cb->event_mask);
|
|
|
|
k_sem_give(&net_mgmt_lock);
|
|
}
|
|
|
|
void net_mgmt_del_event_callback(struct net_mgmt_event_callback *cb)
|
|
{
|
|
NET_DBG("Deleting event callback %p", cb);
|
|
|
|
k_sem_take(&net_mgmt_lock, K_FOREVER);
|
|
|
|
sys_slist_find_and_remove(&event_callbacks, &cb->node);
|
|
|
|
mgmt_rebuild_global_event_mask();
|
|
|
|
k_sem_give(&net_mgmt_lock);
|
|
}
|
|
|
|
void net_mgmt_event_notify_with_info(u32_t mgmt_event, struct net_if *iface,
|
|
void *info, size_t length)
|
|
{
|
|
if (mgmt_is_event_handled(mgmt_event)) {
|
|
NET_DBG("Notifying Event layer %u code %u type %u",
|
|
NET_MGMT_GET_LAYER(mgmt_event),
|
|
NET_MGMT_GET_LAYER_CODE(mgmt_event),
|
|
NET_MGMT_GET_COMMAND(mgmt_event));
|
|
|
|
mgmt_push_event(mgmt_event, iface, info, length);
|
|
k_sem_give(&network_event);
|
|
}
|
|
}
|
|
|
|
int net_mgmt_event_wait(u32_t mgmt_event_mask,
|
|
u32_t *raised_event,
|
|
struct net_if **iface,
|
|
const void **info,
|
|
int timeout)
|
|
{
|
|
return mgmt_event_wait_call(NULL, mgmt_event_mask,
|
|
raised_event, iface, info, timeout);
|
|
}
|
|
|
|
int net_mgmt_event_wait_on_iface(struct net_if *iface,
|
|
u32_t mgmt_event_mask,
|
|
u32_t *raised_event,
|
|
const void **info,
|
|
int timeout)
|
|
{
|
|
NET_ASSERT(NET_MGMT_ON_IFACE(mgmt_event_mask));
|
|
NET_ASSERT(iface);
|
|
|
|
return mgmt_event_wait_call(iface, mgmt_event_mask,
|
|
raised_event, NULL, info, timeout);
|
|
}
|
|
|
|
void net_mgmt_event_init(void)
|
|
{
|
|
sys_slist_init(&event_callbacks);
|
|
global_event_mask = 0U;
|
|
|
|
in_event = -1;
|
|
out_event = -1;
|
|
|
|
(void)memset(events, 0, CONFIG_NET_MGMT_EVENT_QUEUE_SIZE *
|
|
sizeof(struct mgmt_event_entry));
|
|
|
|
k_thread_create(&mgmt_thread_data, mgmt_stack,
|
|
K_THREAD_STACK_SIZEOF(mgmt_stack),
|
|
(k_thread_entry_t)mgmt_thread, NULL, NULL, NULL,
|
|
K_PRIO_COOP(CONFIG_NET_MGMT_EVENT_THREAD_PRIO), 0, 0);
|
|
k_thread_name_set(&mgmt_thread_data, "net_mgmt");
|
|
|
|
NET_DBG("Net MGMT initialized: queue of %u entries, stack size of %u",
|
|
CONFIG_NET_MGMT_EVENT_QUEUE_SIZE,
|
|
CONFIG_NET_MGMT_EVENT_STACK_SIZE);
|
|
}
|