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pigweed / third_party / github / zephyrproject-rtos / zephyr / b867f0e8a629880e9a1536c084d8f3785a42754b / . / subsys / net / ip / net_if.c
blob: de9c2c13680de64cfb81bd346411694d13bd5800 [file] [log] [blame]
/*
* Copyright (c) 2016 Intel Corporation.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(net_if, CONFIG_NET_IF_LOG_LEVEL);
#include <zephyr/init.h>
#include <zephyr/kernel.h>
#include <zephyr/linker/sections.h>
#include <zephyr/random/rand32.h>
#include <zephyr/syscall_handler.h>
#include <stdlib.h>
#include <string.h>
#include <zephyr/net/igmp.h>
#include <zephyr/net/net_core.h>
#include <zephyr/net/net_pkt.h>
#include <zephyr/net/net_if.h>
#include <zephyr/net/net_mgmt.h>
#include <zephyr/net/ethernet.h>
#include <zephyr/net/virtual.h>
#include "net_private.h"
#include "ipv6.h"
#include "ipv4_autoconf_internal.h"
#include "net_stats.h"
#define REACHABLE_TIME (MSEC_PER_SEC * 30) /* in ms */
/*
* split the min/max random reachable factors into numerator/denominator
* so that integer-based math works better
*/
#define MIN_RANDOM_NUMER (1)
#define MIN_RANDOM_DENOM (2)
#define MAX_RANDOM_NUMER (3)
#define MAX_RANDOM_DENOM (2)
static K_MUTEX_DEFINE(lock);
/* net_if dedicated section limiters */
extern struct net_if _net_if_list_start[];
extern struct net_if _net_if_list_end[];
static struct net_if *default_iface;
#if defined(CONFIG_NET_NATIVE_IPV4) || defined(CONFIG_NET_NATIVE_IPV6)
static struct net_if_router routers[CONFIG_NET_MAX_ROUTERS];
static struct k_work_delayable router_timer;
static sys_slist_t active_router_timers;
#endif
#if defined(CONFIG_NET_NATIVE_IPV6)
/* Timer that triggers network address renewal */
static struct k_work_delayable address_lifetime_timer;
/* Track currently active address lifetime timers */
static sys_slist_t active_address_lifetime_timers;
/* Timer that triggers IPv6 prefix lifetime */
static struct k_work_delayable prefix_lifetime_timer;
/* Track currently active IPv6 prefix lifetime timers */
static sys_slist_t active_prefix_lifetime_timers;
#if defined(CONFIG_NET_IPV6_DAD)
/** Duplicate address detection (DAD) timer */
static struct k_work_delayable dad_timer;
static sys_slist_t active_dad_timers;
#endif
#if defined(CONFIG_NET_IPV6_ND)
static struct k_work_delayable rs_timer;
static sys_slist_t active_rs_timers;
#endif
static struct {
struct net_if_ipv6 ipv6;
struct net_if *iface;
} ipv6_addresses[CONFIG_NET_IF_MAX_IPV6_COUNT];
#endif /* CONFIG_NET_IPV6 */
#if defined(CONFIG_NET_NATIVE_IPV4)
static struct {
struct net_if_ipv4 ipv4;
struct net_if *iface;
} ipv4_addresses[CONFIG_NET_IF_MAX_IPV4_COUNT];
#endif /* CONFIG_NET_IPV4 */
/* We keep track of the link callbacks in this list.
*/
static sys_slist_t link_callbacks;
#if defined(CONFIG_NET_NATIVE_IPV4) || defined(CONFIG_NET_NATIVE_IPV6)
/* Multicast join/leave tracking.
*/
static sys_slist_t mcast_monitor_callbacks;
#endif
#if defined(CONFIG_NET_PKT_TIMESTAMP_THREAD)
#if !defined(CONFIG_NET_PKT_TIMESTAMP_STACK_SIZE)
#define CONFIG_NET_PKT_TIMESTAMP_STACK_SIZE 1024
#endif
K_KERNEL_STACK_DEFINE(tx_ts_stack, CONFIG_NET_PKT_TIMESTAMP_STACK_SIZE);
K_FIFO_DEFINE(tx_ts_queue);
static struct k_thread tx_thread_ts;
/* We keep track of the timestamp callbacks in this list.
*/
static sys_slist_t timestamp_callbacks;
#endif /* CONFIG_NET_PKT_TIMESTAMP_THREAD */
#if CONFIG_NET_IF_LOG_LEVEL >= LOG_LEVEL_DBG
#define debug_check_packet(pkt) \
do { \
NET_DBG("Processing (pkt %p, prio %d) network packet " \
"iface %p/%d", \
pkt, net_pkt_priority(pkt), \
net_pkt_iface(pkt), \
net_if_get_by_iface(net_pkt_iface(pkt))); \
\
NET_ASSERT(pkt->frags); \
} while (0)
#else
#define debug_check_packet(...)
#endif /* CONFIG_NET_IF_LOG_LEVEL >= LOG_LEVEL_DBG */
struct net_if *z_impl_net_if_get_by_index(int index)
{
if (index <= 0) {
return NULL;
}
if (&_net_if_list_start[index - 1] >= _net_if_list_end) {
NET_DBG("Index %d is too large", index);
return NULL;
}
return &_net_if_list_start[index - 1];
}
#ifdef CONFIG_USERSPACE
struct net_if *z_vrfy_net_if_get_by_index(int index)
{
struct net_if *iface;
struct z_object *zo;
int ret;
iface = net_if_get_by_index(index);
if (!iface) {
return NULL;
}
zo = z_object_find(iface);
ret = z_object_validate(zo, K_OBJ_NET_IF, _OBJ_INIT_TRUE);
if (ret != 0) {
z_dump_object_error(ret, iface, zo, K_OBJ_NET_IF);
return NULL;
}
return iface;
}
#include <syscalls/net_if_get_by_index_mrsh.c>
#endif
static inline void net_context_send_cb(struct net_context *context,
int status)
{
if (!context) {
return;
}
if (context->send_cb) {
context->send_cb(context, status, context->user_data);
}
if (IS_ENABLED(CONFIG_NET_UDP) &&
net_context_get_proto(context) == IPPROTO_UDP) {
net_stats_update_udp_sent(net_context_get_iface(context));
} else if (IS_ENABLED(CONFIG_NET_TCP) &&
net_context_get_proto(context) == IPPROTO_TCP) {
net_stats_update_tcp_seg_sent(net_context_get_iface(context));
}
}
static void update_txtime_stats_detail(struct net_pkt *pkt,
uint32_t start_time, uint32_t stop_time)
{
uint32_t val, prev = start_time;
int i;
for (i = 0; i < net_pkt_stats_tick_count(pkt); i++) {
if (!net_pkt_stats_tick(pkt)[i]) {
break;
}
val = net_pkt_stats_tick(pkt)[i] - prev;
prev = net_pkt_stats_tick(pkt)[i];
net_pkt_stats_tick(pkt)[i] = val;
}
}
static bool net_if_tx(struct net_if *iface, struct net_pkt *pkt)
{
struct net_linkaddr ll_dst = {
.addr = NULL
};
struct net_linkaddr_storage ll_dst_storage;
struct net_context *context;
uint32_t create_time;
int status;
/* We collect send statistics for each socket priority if enabled */
uint8_t pkt_priority;
if (!pkt) {
return false;
}
create_time = net_pkt_create_time(pkt);
debug_check_packet(pkt);
/* If there're any link callbacks, with such a callback receiving
* a destination address, copy that address out of packet, just in
* case packet is freed before callback is called.
*/
if (!sys_slist_is_empty(&link_callbacks)) {
if (net_linkaddr_set(&ll_dst_storage,
net_pkt_lladdr_dst(pkt)->addr,
net_pkt_lladdr_dst(pkt)->len) == 0) {
ll_dst.addr = ll_dst_storage.addr;
ll_dst.len = ll_dst_storage.len;
ll_dst.type = net_pkt_lladdr_dst(pkt)->type;
}
}
context = net_pkt_context(pkt);
if (net_if_flag_is_set(iface, NET_IF_UP)) {
if (IS_ENABLED(CONFIG_NET_TCP) &&
net_pkt_family(pkt) != AF_UNSPEC) {
net_pkt_set_queued(pkt, false);
}
if (IS_ENABLED(CONFIG_NET_PKT_TXTIME_STATS)) {
pkt_priority = net_pkt_priority(pkt);
if (IS_ENABLED(CONFIG_NET_PKT_TXTIME_STATS_DETAIL)) {
/* Make sure the statistics information is not
* lost by keeping the net_pkt over L2 send.
*/
net_pkt_ref(pkt);
}
}
status = net_if_l2(iface)->send(iface, pkt);
if (IS_ENABLED(CONFIG_NET_PKT_TXTIME_STATS)) {
uint32_t end_tick = k_cycle_get_32();
net_pkt_set_tx_stats_tick(pkt, end_tick);
net_stats_update_tc_tx_time(iface,
pkt_priority,
create_time,
end_tick);
if (IS_ENABLED(CONFIG_NET_PKT_TXTIME_STATS_DETAIL)) {
update_txtime_stats_detail(
pkt,
create_time,
end_tick);
net_stats_update_tc_tx_time_detail(
iface, pkt_priority,
net_pkt_stats_tick(pkt));
/* For TCP connections, we might keep the pkt
* longer so that we can resend it if needed.
* Because of that we need to clear the
* statistics here.
*/
net_pkt_stats_tick_reset(pkt);
net_pkt_unref(pkt);
}
}
} else {
/* Drop packet if interface is not up */
NET_WARN("iface %p is down", iface);
status = -ENETDOWN;
}
if (status < 0) {
net_pkt_unref(pkt);
} else {
net_stats_update_bytes_sent(iface, status);
}
if (context) {
NET_DBG("Calling context send cb %p status %d",
context, status);
net_context_send_cb(context, status);
}
if (ll_dst.addr) {
net_if_call_link_cb(iface, &ll_dst, status);
}
return true;
}
void net_process_tx_packet(struct net_pkt *pkt)
{
struct net_if *iface;
net_pkt_set_tx_stats_tick(pkt, k_cycle_get_32());
iface = net_pkt_iface(pkt);
net_if_tx(iface, pkt);
#if defined(CONFIG_NET_POWER_MANAGEMENT)
iface->tx_pending--;
#endif
}
void net_if_queue_tx(struct net_if *iface, struct net_pkt *pkt)
{
if (!net_pkt_filter_send_ok(pkt)) {
/* silently drop the packet */
net_pkt_unref(pkt);
return;
}
uint8_t prio = net_pkt_priority(pkt);
uint8_t tc = net_tx_priority2tc(prio);
net_stats_update_tc_sent_pkt(iface, tc);
net_stats_update_tc_sent_bytes(iface, tc, net_pkt_get_len(pkt));
net_stats_update_tc_sent_priority(iface, tc, prio);
/* For highest priority packet, skip the TX queue and push directly to
* the driver. Also if there are no TX queue/thread, push the packet
* directly to the driver.
*/
if ((IS_ENABLED(CONFIG_NET_TC_SKIP_FOR_HIGH_PRIO) &&
prio == NET_PRIORITY_CA) || NET_TC_TX_COUNT == 0) {
net_pkt_set_tx_stats_tick(pkt, k_cycle_get_32());
net_if_tx(net_pkt_iface(pkt), pkt);
return;
}
#if NET_TC_TX_COUNT > 1
NET_DBG("TC %d with prio %d pkt %p", tc, prio, pkt);
#endif
#if defined(CONFIG_NET_POWER_MANAGEMENT)
iface->tx_pending++;
#endif
if (!net_tc_submit_to_tx_queue(tc, pkt)) {
#if defined(CONFIG_NET_POWER_MANAGEMENT)
iface->tx_pending--
#endif
;
}
}
void net_if_stats_reset(struct net_if *iface)
{
#if defined(CONFIG_NET_STATISTICS_PER_INTERFACE)
STRUCT_SECTION_FOREACH(net_if, tmp) {
if (iface == tmp) {
memset(&iface->stats, 0, sizeof(iface->stats));
return;
}
}
#else
ARG_UNUSED(iface);
#endif
}
void net_if_stats_reset_all(void)
{
#if defined(CONFIG_NET_STATISTICS_PER_INTERFACE)
k_mutex_lock(&lock, K_FOREVER);
STRUCT_SECTION_FOREACH(net_if, iface) {
memset(&iface->stats, 0, sizeof(iface->stats));
}
k_mutex_unlock(&lock);
#endif
}
static inline void init_iface(struct net_if *iface)
{
const struct net_if_api *api = net_if_get_device(iface)->api;
if (!api || !api->init) {
NET_ERR("Iface %p driver API init NULL", iface);
return;
}
/* By default IPv4 and IPv6 are enabled for a given network interface.
* These can be turned off later if needed.
*/
#if defined(CONFIG_NET_NATIVE_IPV4)
net_if_flag_set(iface, NET_IF_IPV4);
#endif
#if defined(CONFIG_NET_NATIVE_IPV6)
net_if_flag_set(iface, NET_IF_IPV6);
#endif
net_virtual_init(iface);
NET_DBG("On iface %p", iface);
#ifdef CONFIG_USERSPACE
z_object_init(iface);
#endif
api->init(iface);
}
enum net_verdict net_if_send_data(struct net_if *iface, struct net_pkt *pkt)
{
struct net_context *context = net_pkt_context(pkt);
struct net_linkaddr *dst = net_pkt_lladdr_dst(pkt);
enum net_verdict verdict = NET_OK;
int status = -EIO;
k_mutex_lock(&lock, K_FOREVER);
if (!net_if_flag_is_set(iface, NET_IF_UP) ||
net_if_flag_is_set(iface, NET_IF_SUSPENDED)) {
/* Drop packet if interface is not up */
NET_WARN("iface %p is down", iface);
verdict = NET_DROP;
status = -ENETDOWN;
goto done;
}
if (IS_ENABLED(CONFIG_NET_OFFLOAD) && !net_if_l2(iface)) {
NET_WARN("no l2 for iface %p, discard pkt", iface);
verdict = NET_DROP;
goto done;
}
/* If the ll address is not set at all, then we must set
* it here.
* Workaround Linux bug, see:
* https://github.com/zephyrproject-rtos/zephyr/issues/3111
*/
if (!net_if_flag_is_set(iface, NET_IF_POINTOPOINT) &&
!net_pkt_lladdr_src(pkt)->addr) {
net_pkt_lladdr_src(pkt)->addr = net_pkt_lladdr_if(pkt)->addr;
net_pkt_lladdr_src(pkt)->len = net_pkt_lladdr_if(pkt)->len;
}
#if defined(CONFIG_NET_LOOPBACK)
/* If the packet is destined back to us, then there is no need to do
* additional checks, so let the packet through.
*/
if (net_if_l2(iface) == &NET_L2_GET_NAME(DUMMY)) {
goto done;
}
#endif
/* If the ll dst address is not set check if it is present in the nbr
* cache.
*/
if (IS_ENABLED(CONFIG_NET_IPV6) && net_pkt_family(pkt) == AF_INET6) {
verdict = net_ipv6_prepare_for_send(pkt);
}
done:
/* NET_OK in which case packet has checked successfully. In this case
* the net_context callback is called after successful delivery in
* net_if_tx_thread().
*
* NET_DROP in which case we call net_context callback that will
* give the status to user application.
*
* NET_CONTINUE in which case the sending of the packet is delayed.
* This can happen for example if we need to do IPv6 ND to figure
* out link layer address.
*/
if (verdict == NET_DROP) {
if (context) {
NET_DBG("Calling ctx send cb %p verdict %d",
context, verdict);
net_context_send_cb(context, status);
}
if (dst->addr) {
net_if_call_link_cb(iface, dst, status);
}
} else if (verdict == NET_OK) {
/* Packet is ready to be sent by L2, let's queue */
net_if_queue_tx(iface, pkt);
}
k_mutex_unlock(&lock);
return verdict;
}
int net_if_set_link_addr_locked(struct net_if *iface,
uint8_t *addr, uint8_t len,
enum net_link_type type)
{
int ret;
k_mutex_lock(&lock, K_FOREVER);
ret = net_if_set_link_addr_unlocked(iface, addr, len, type);
k_mutex_unlock(&lock);
return ret;
}
struct net_if *net_if_get_by_link_addr(struct net_linkaddr *ll_addr)
{
STRUCT_SECTION_FOREACH(net_if, iface) {
if (!memcmp(net_if_get_link_addr(iface)->addr, ll_addr->addr,
ll_addr->len)) {
return iface;
}
}
return NULL;
}
struct net_if *net_if_lookup_by_dev(const struct device *dev)
{
STRUCT_SECTION_FOREACH(net_if, iface) {
if (net_if_get_device(iface) == dev) {
return iface;
}
}
return NULL;
}
void net_if_set_default(struct net_if *iface)
{
default_iface = iface;
}
struct net_if *net_if_get_default(void)
{
struct net_if *iface = NULL;
if (&_net_if_list_start[0] == &_net_if_list_end[0]) {
return NULL;
}
if (default_iface != NULL) {
return default_iface;
}
#if defined(CONFIG_NET_DEFAULT_IF_ETHERNET)
iface = net_if_get_first_by_type(&NET_L2_GET_NAME(ETHERNET));
#endif
#if defined(CONFIG_NET_DEFAULT_IF_IEEE802154)
iface = net_if_get_first_by_type(&NET_L2_GET_NAME(IEEE802154));
#endif
#if defined(CONFIG_NET_DEFAULT_IF_BLUETOOTH)
iface = net_if_get_first_by_type(&NET_L2_GET_NAME(BLUETOOTH));
#endif
#if defined(CONFIG_NET_DEFAULT_IF_DUMMY)
iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
#endif
#if defined(CONFIG_NET_DEFAULT_IF_OFFLOAD)
iface = net_if_get_first_by_type(NULL);
#endif
#if defined(CONFIG_NET_DEFAULT_IF_CANBUS_RAW)
iface = net_if_get_first_by_type(&NET_L2_GET_NAME(CANBUS_RAW));
#endif
#if defined(CONFIG_NET_DEFAULT_IF_PPP)
iface = net_if_get_first_by_type(&NET_L2_GET_NAME(PPP));
#endif
#if defined(CONFIG_NET_DEFAULT_IF_UP)
iface = net_if_get_first_up();
#endif
return iface ? iface : _net_if_list_start;
}
struct net_if *net_if_get_first_by_type(const struct net_l2 *l2)
{
STRUCT_SECTION_FOREACH(net_if, iface) {
if (IS_ENABLED(CONFIG_NET_OFFLOAD) &&
!l2 && net_if_offload(iface)) {
return iface;
}
if (net_if_l2(iface) == l2) {
return iface;
}
}
return NULL;
}
struct net_if *net_if_get_first_up(void)
{
STRUCT_SECTION_FOREACH(net_if, iface) {
if (net_if_flag_is_set(iface, NET_IF_UP)) {
return iface;
}
}
return NULL;
}
static enum net_l2_flags l2_flags_get(struct net_if *iface)
{
enum net_l2_flags flags = 0;
if (net_if_l2(iface) && net_if_l2(iface)->get_flags) {
flags = net_if_l2(iface)->get_flags(iface);
}
return flags;
}
#if defined(CONFIG_NET_NATIVE_IPV4) || defined(CONFIG_NET_NATIVE_IPV6)
/* Return how many bits are shared between two IP addresses */
static uint8_t get_ipaddr_diff(const uint8_t *src, const uint8_t *dst, int addr_len)
{
uint8_t j, k, xor;
uint8_t len = 0U;
for (j = 0U; j < addr_len; j++) {
if (src[j] == dst[j]) {
len += 8U;
} else {
xor = src[j] ^ dst[j];
for (k = 0U; k < 8; k++) {
if (!(xor & 0x80)) {
len++;
xor <<= 1;
} else {
break;
}
}
break;
}
}
return len;
}
static struct net_if_router *iface_router_lookup(struct net_if *iface,
uint8_t family, void *addr)
{
struct net_if_router *router = NULL;
int i;
k_mutex_lock(&lock, K_FOREVER);
for (i = 0; i < CONFIG_NET_MAX_ROUTERS; i++) {
if (!routers[i].is_used ||
routers[i].address.family != family ||
routers[i].iface != iface) {
continue;
}
if ((IS_ENABLED(CONFIG_NET_IPV6) && family == AF_INET6 &&
net_ipv6_addr_cmp(net_if_router_ipv6(&routers[i]),
(struct in6_addr *)addr)) ||
(IS_ENABLED(CONFIG_NET_IPV4) && family == AF_INET &&
net_ipv4_addr_cmp(net_if_router_ipv4(&routers[i]),
(struct in_addr *)addr))) {
router = &routers[i];
goto out;
}
}
out:
k_mutex_unlock(&lock);
return router;
}
static void iface_router_notify_deletion(struct net_if_router *router,
const char *delete_reason)
{
if (IS_ENABLED(CONFIG_NET_IPV6) &&
router->address.family == AF_INET6) {
NET_DBG("IPv6 router %s %s",
net_sprint_ipv6_addr(net_if_router_ipv6(router)),
delete_reason);
net_mgmt_event_notify_with_info(NET_EVENT_IPV6_ROUTER_DEL,
router->iface,
&router->address.in6_addr,
sizeof(struct in6_addr));
} else if (IS_ENABLED(CONFIG_NET_IPV4) &&
router->address.family == AF_INET) {
NET_DBG("IPv4 router %s %s",
net_sprint_ipv4_addr(net_if_router_ipv4(router)),
delete_reason);
net_mgmt_event_notify_with_info(NET_EVENT_IPV4_ROUTER_DEL,
router->iface,
&router->address.in_addr,
sizeof(struct in6_addr));
}
}
static inline int32_t iface_router_ends(const struct net_if_router *router,
uint32_t now)
{
uint32_t ends = router->life_start;
ends += MSEC_PER_SEC * router->lifetime;
/* Signed number of ms until router lifetime ends */
return (int32_t)(ends - now);
}
static void iface_router_update_timer(uint32_t now)
{
struct net_if_router *router, *next;
uint32_t new_delay = UINT32_MAX;
k_mutex_lock(&lock, K_FOREVER);
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&active_router_timers,
router, next, node) {
int32_t ends = iface_router_ends(router, now);
if (ends <= 0) {
new_delay = 0;
break;
}
new_delay = MIN((uint32_t)ends, new_delay);
}
if (new_delay == UINT32_MAX) {
k_work_cancel_delayable(&router_timer);
} else {
k_work_reschedule(&router_timer, K_MSEC(new_delay));
}
k_mutex_unlock(&lock);
}
static void iface_router_expired(struct k_work *work)
{
uint32_t current_time = k_uptime_get_32();
struct net_if_router *router, *next;
sys_snode_t *prev_node = NULL;
ARG_UNUSED(work);
k_mutex_lock(&lock, K_FOREVER);
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&active_router_timers,
router, next, node) {
int32_t ends = iface_router_ends(router, current_time);
if (ends > 0) {
/* We have to loop on all active routers as their
* lifetime differ from each other.
*/
prev_node = &router->node;
continue;
}
iface_router_notify_deletion(router, "has expired");
sys_slist_remove(&active_router_timers,
prev_node, &router->node);
router->is_used = false;
}
iface_router_update_timer(current_time);
k_mutex_unlock(&lock);
}
static struct net_if_router *iface_router_add(struct net_if *iface,
uint8_t family, void *addr,
bool is_default,
uint16_t lifetime)
{
struct net_if_router *router = NULL;
int i;
k_mutex_lock(&lock, K_FOREVER);
for (i = 0; i < CONFIG_NET_MAX_ROUTERS; i++) {
if (routers[i].is_used) {
continue;
}
routers[i].is_used = true;
routers[i].iface = iface;
routers[i].address.family = family;
if (lifetime) {
routers[i].is_default = true;
routers[i].is_infinite = false;
routers[i].lifetime = lifetime;
routers[i].life_start = k_uptime_get_32();
sys_slist_append(&active_router_timers,
&routers[i].node);
iface_router_update_timer(routers[i].life_start);
} else {
routers[i].is_default = false;
routers[i].is_infinite = true;
routers[i].lifetime = 0;
}
if (IS_ENABLED(CONFIG_NET_IPV6) && family == AF_INET6) {
memcpy(net_if_router_ipv6(&routers[i]), addr,
sizeof(struct in6_addr));
net_mgmt_event_notify_with_info(
NET_EVENT_IPV6_ROUTER_ADD, iface,
&routers[i].address.in6_addr,
sizeof(struct in6_addr));
NET_DBG("interface %p router %s lifetime %u default %d "
"added", iface,
net_sprint_ipv6_addr((struct in6_addr *)addr),
lifetime, routers[i].is_default);
} else if (IS_ENABLED(CONFIG_NET_IPV4) && family == AF_INET) {
memcpy(net_if_router_ipv4(&routers[i]), addr,
sizeof(struct in_addr));
routers[i].is_default = is_default;
net_mgmt_event_notify_with_info(
NET_EVENT_IPV4_ROUTER_ADD, iface,
&routers[i].address.in_addr,
sizeof(struct in_addr));
NET_DBG("interface %p router %s lifetime %u default %d "
"added", iface,
net_sprint_ipv4_addr((struct in_addr *)addr),
lifetime, is_default);
}
router = &routers[i];
goto out;
}
out:
k_mutex_unlock(&lock);
return router;
}
static bool iface_router_rm(struct net_if_router *router)
{
bool ret = false;
k_mutex_lock(&lock, K_FOREVER);
if (!router->is_used) {
goto out;
}
iface_router_notify_deletion(router, "has been removed");
/* We recompute the timer if only the router was time limited */
if (sys_slist_find_and_remove(&active_router_timers, &router->node)) {
iface_router_update_timer(k_uptime_get_32());
}
router->is_used = false;
ret = true;
out:
k_mutex_unlock(&lock);
return ret;
}
void net_if_router_rm(struct net_if_router *router)
{
k_mutex_lock(&lock, K_FOREVER);
router->is_used = false;
/* FIXME - remove timer */
k_mutex_unlock(&lock);
}
static struct net_if_router *iface_router_find_default(struct net_if *iface,
uint8_t family, void *addr)
{
struct net_if_router *router = NULL;
int i;
/* Todo: addr will need to be handled */
ARG_UNUSED(addr);
k_mutex_lock(&lock, K_FOREVER);
for (i = 0; i < CONFIG_NET_MAX_ROUTERS; i++) {
if (!routers[i].is_used ||
!routers[i].is_default ||
routers[i].address.family != family) {
continue;
}
if (iface && iface != routers[i].iface) {
continue;
}
router = &routers[i];
goto out;
}
out:
k_mutex_unlock(&lock);
return router;
}
static void iface_router_init(void)
{
k_work_init_delayable(&router_timer, iface_router_expired);
sys_slist_init(&active_router_timers);
}
#else
#define iface_router_init(...)
#endif
#if defined(CONFIG_NET_NATIVE_IPV4) || defined(CONFIG_NET_NATIVE_IPV6)
void net_if_mcast_mon_register(struct net_if_mcast_monitor *mon,
struct net_if *iface,
net_if_mcast_callback_t cb)
{
k_mutex_lock(&lock, K_FOREVER);
sys_slist_find_and_remove(&mcast_monitor_callbacks, &mon->node);
sys_slist_prepend(&mcast_monitor_callbacks, &mon->node);
mon->iface = iface;
mon->cb = cb;
k_mutex_unlock(&lock);
}
void net_if_mcast_mon_unregister(struct net_if_mcast_monitor *mon)
{
k_mutex_lock(&lock, K_FOREVER);
sys_slist_find_and_remove(&mcast_monitor_callbacks, &mon->node);
k_mutex_unlock(&lock);
}
void net_if_mcast_monitor(struct net_if *iface,
const struct net_addr *addr,
bool is_joined)
{
struct net_if_mcast_monitor *mon, *tmp;
k_mutex_lock(&lock, K_FOREVER);
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&mcast_monitor_callbacks,
mon, tmp, node) {
if (iface == mon->iface) {
mon->cb(iface, addr, is_joined);
}
}
k_mutex_unlock(&lock);
}
#endif
#if defined(CONFIG_NET_NATIVE_IPV6)
int net_if_config_ipv6_get(struct net_if *iface, struct net_if_ipv6 **ipv6)
{
int ret = 0;
int i;
k_mutex_lock(&lock, K_FOREVER);
if (!net_if_flag_is_set(iface, NET_IF_IPV6)) {
ret = -ENOTSUP;
goto out;
}
if (iface->config.ip.ipv6) {
if (ipv6) {
*ipv6 = iface->config.ip.ipv6;
}
goto out;
}
for (i = 0; i < ARRAY_SIZE(ipv6_addresses); i++) {
if (ipv6_addresses[i].iface) {
continue;
}
iface->config.ip.ipv6 = &ipv6_addresses[i].ipv6;
ipv6_addresses[i].iface = iface;
if (ipv6) {
*ipv6 = &ipv6_addresses[i].ipv6;
}
goto out;
}
ret = -ESRCH;
out:
k_mutex_unlock(&lock);
return ret;
}
int net_if_config_ipv6_put(struct net_if *iface)
{
int ret = 0;
int i;
k_mutex_lock(&lock, K_FOREVER);
if (!net_if_flag_is_set(iface, NET_IF_IPV6)) {
ret = -ENOTSUP;
goto out;
}
if (!iface->config.ip.ipv6) {
ret = -EALREADY;
goto out;
}
for (i = 0; i < ARRAY_SIZE(ipv6_addresses); i++) {
if (ipv6_addresses[i].iface != iface) {
continue;
}
iface->config.ip.ipv6 = NULL;
ipv6_addresses[i].iface = NULL;
goto out;
}
ret = -ESRCH;
out:
k_mutex_unlock(&lock);
return ret;
}
#if defined(CONFIG_NET_IPV6_MLD)
static void join_mcast_allnodes(struct net_if *iface)
{
struct in6_addr addr;
int ret;
net_ipv6_addr_create_ll_allnodes_mcast(&addr);
ret = net_ipv6_mld_join(iface, &addr);
if (ret < 0 && ret != -EALREADY) {
NET_ERR("Cannot join all nodes address %s (%d)",
net_sprint_ipv6_addr(&addr), ret);
}
}
static void join_mcast_solicit_node(struct net_if *iface,
struct in6_addr *my_addr)
{
struct in6_addr addr;
int ret;
/* Join to needed multicast groups, RFC 4291 ch 2.8 */
net_ipv6_addr_create_solicited_node(my_addr, &addr);
ret = net_ipv6_mld_join(iface, &addr);
if (ret < 0 && ret != -EALREADY) {
NET_ERR("Cannot join solicit node address %s (%d)",
net_sprint_ipv6_addr(&addr), ret);
}
}
static void leave_mcast_all(struct net_if *iface)
{
struct net_if_ipv6 *ipv6 = iface->config.ip.ipv6;
int i;
if (!ipv6) {
return;
}
for (i = 0; i < NET_IF_MAX_IPV6_MADDR; i++) {
if (!ipv6->mcast[i].is_used ||
!ipv6->mcast[i].is_joined) {
continue;
}
net_ipv6_mld_leave(iface, &ipv6->mcast[i].address.in6_addr);
}
}
static void join_mcast_nodes(struct net_if *iface, struct in6_addr *addr)
{
enum net_l2_flags flags = 0;
flags = l2_flags_get(iface);
if (flags & NET_L2_MULTICAST) {
join_mcast_allnodes(iface);
if (!(flags & NET_L2_MULTICAST_SKIP_JOIN_SOLICIT_NODE)) {
join_mcast_solicit_node(iface, addr);
}
}
}
#else
#define join_mcast_allnodes(...)
#define join_mcast_solicit_node(...)
#define leave_mcast_all(...)
#define join_mcast_nodes(...)
#endif /* CONFIG_NET_IPV6_MLD */
#if defined(CONFIG_NET_IPV6_DAD)
#define DAD_TIMEOUT 100U /* ms */
static void dad_timeout(struct k_work *work)
{
uint32_t current_time = k_uptime_get_32();
struct net_if_addr *ifaddr, *next;
int32_t delay = -1;
ARG_UNUSED(work);
k_mutex_lock(&lock, K_FOREVER);
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&active_dad_timers,
ifaddr, next, dad_node) {
struct net_if_addr *tmp;
struct net_if *iface;
/* DAD entries are ordered by construction. Stop when
* we find one that hasn't expired.
*/
delay = (int32_t)(ifaddr->dad_start +
DAD_TIMEOUT - current_time);
if (delay > 0) {
break;
}
/* Removing the ifaddr from active_dad_timers list */
sys_slist_remove(&active_dad_timers, NULL, &ifaddr->dad_node);
NET_DBG("DAD succeeded for %s",
net_sprint_ipv6_addr(&ifaddr->address.in6_addr));
ifaddr->addr_state = NET_ADDR_PREFERRED;
/* Because we do not know the interface at this point,
* we need to lookup for it.
*/
iface = NULL;
tmp = net_if_ipv6_addr_lookup(&ifaddr->address.in6_addr,
&iface);
if (tmp == ifaddr) {
net_mgmt_event_notify_with_info(
NET_EVENT_IPV6_DAD_SUCCEED,
iface, &ifaddr->address.in6_addr,
sizeof(struct in6_addr));
/* The address gets added to neighbor cache which is not
* needed in this case as the address is our own one.
*/
net_ipv6_nbr_rm(iface, &ifaddr->address.in6_addr);
}
ifaddr = NULL;
}
if ((ifaddr != NULL) && (delay > 0)) {
k_work_reschedule(&dad_timer, K_MSEC((uint32_t)delay));
}
k_mutex_unlock(&lock);
}
static void net_if_ipv6_start_dad(struct net_if *iface,
struct net_if_addr *ifaddr)
{
ifaddr->addr_state = NET_ADDR_TENTATIVE;
if (net_if_is_up(iface)) {
NET_DBG("Interface %p ll addr %s tentative IPv6 addr %s",
iface,
net_sprint_ll_addr(
net_if_get_link_addr(iface)->addr,
net_if_get_link_addr(iface)->len),
net_sprint_ipv6_addr(&ifaddr->address.in6_addr));
ifaddr->dad_count = 1U;
if (!net_ipv6_start_dad(iface, ifaddr)) {
ifaddr->dad_start = k_uptime_get_32();
sys_slist_append(&active_dad_timers, &ifaddr->dad_node);
/* FUTURE: use schedule, not reschedule. */
if (!k_work_delayable_remaining_get(&dad_timer)) {
k_work_reschedule(&dad_timer,
K_MSEC(DAD_TIMEOUT));
}
}
} else {
NET_DBG("Interface %p is down, starting DAD for %s later.",
iface,
net_sprint_ipv6_addr(&ifaddr->address.in6_addr));
}
}
void net_if_start_dad(struct net_if *iface)
{
struct net_if_addr *ifaddr;
struct net_if_ipv6 *ipv6;
struct in6_addr addr = { };
int ret, i;
k_mutex_lock(&lock, K_FOREVER);
NET_DBG("Starting DAD for iface %p", iface);
ret = net_if_config_ipv6_get(iface, &ipv6);
if (ret < 0) {
if (ret != -ENOTSUP) {
NET_WARN("Cannot do DAD IPv6 config is not valid.");
}
goto out;
}
if (!ipv6) {
goto out;
}
net_ipv6_addr_create_iid(&addr, net_if_get_link_addr(iface));
ifaddr = net_if_ipv6_addr_add(iface, &addr, NET_ADDR_AUTOCONF, 0);
if (!ifaddr) {
NET_ERR("Cannot add %s address to interface %p, DAD fails",
net_sprint_ipv6_addr(&addr), iface);
}
/* Start DAD for all the addresses that were added earlier when
* the interface was down.
*/
for (i = 0; i < NET_IF_MAX_IPV6_ADDR; i++) {
if (!ipv6->unicast[i].is_used ||
ipv6->unicast[i].address.family != AF_INET6 ||
&ipv6->unicast[i] == ifaddr ||
net_ipv6_is_addr_loopback(
&ipv6->unicast[i].address.in6_addr)) {
continue;
}
net_if_ipv6_start_dad(iface, &ipv6->unicast[i]);
}
out:
k_mutex_unlock(&lock);
}
void net_if_ipv6_dad_failed(struct net_if *iface, const struct in6_addr *addr)
{
struct net_if_addr *ifaddr;
k_mutex_lock(&lock, K_FOREVER);
ifaddr = net_if_ipv6_addr_lookup(addr, &iface);
if (!ifaddr) {
NET_ERR("Cannot find %s address in interface %p",
net_sprint_ipv6_addr(addr), iface);
goto out;
}
sys_slist_find_and_remove(&active_dad_timers, &ifaddr->dad_node);
net_mgmt_event_notify_with_info(NET_EVENT_IPV6_DAD_FAILED, iface,
&ifaddr->address.in6_addr,
sizeof(struct in6_addr));
net_if_ipv6_addr_rm(iface, addr);
out:
k_mutex_unlock(&lock);
}
static inline void iface_ipv6_dad_init(void)
{
k_work_init_delayable(&dad_timer, dad_timeout);
sys_slist_init(&active_dad_timers);
}
#else
static inline void net_if_ipv6_start_dad(struct net_if *iface,
struct net_if_addr *ifaddr)
{
ifaddr->addr_state = NET_ADDR_PREFERRED;
}
#define iface_ipv6_dad_init(...)
#endif /* CONFIG_NET_IPV6_DAD */
#if defined(CONFIG_NET_IPV6_ND)
#define RS_TIMEOUT (1U * MSEC_PER_SEC)
#define RS_COUNT 3
static void rs_timeout(struct k_work *work)
{
uint32_t current_time = k_uptime_get_32();
struct net_if_ipv6 *ipv6, *next;
int32_t delay = -1;
ARG_UNUSED(work);
k_mutex_lock(&lock, K_FOREVER);
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&active_rs_timers,
ipv6, next, rs_node) {
struct net_if *iface = NULL;
/* RS entries are ordered by construction. Stop when
* we find one that hasn't expired.
*/
delay = (int32_t)(ipv6->rs_start + RS_TIMEOUT - current_time);
if (delay > 0) {
break;
}
/* Removing the ipv6 from active_rs_timers list */
sys_slist_remove(&active_rs_timers, NULL, &ipv6->rs_node);
/* Did not receive RA yet. */
ipv6->rs_count++;
STRUCT_SECTION_FOREACH(net_if, tmp) {
if (tmp->config.ip.ipv6 == ipv6) {
iface = tmp;
break;
}
}
if (iface) {
NET_DBG("RS no respond iface %p count %d",
iface, ipv6->rs_count);
if (ipv6->rs_count < RS_COUNT) {
net_if_start_rs(iface);
}
} else {
NET_DBG("Interface IPv6 config %p not found", ipv6);
}
ipv6 = NULL;
}
if ((ipv6 != NULL) && (delay > 0)) {
k_work_reschedule(&rs_timer, K_MSEC(ipv6->rs_start +
RS_TIMEOUT - current_time));
}
k_mutex_unlock(&lock);
}
void net_if_start_rs(struct net_if *iface)
{
struct net_if_ipv6 *ipv6;
k_mutex_lock(&lock, K_FOREVER);
ipv6 = iface->config.ip.ipv6;
if (!ipv6) {
goto out;
}
NET_DBG("Starting ND/RS for iface %p", iface);
if (!net_ipv6_start_rs(iface)) {
ipv6->rs_start = k_uptime_get_32();
sys_slist_append(&active_rs_timers, &ipv6->rs_node);
/* FUTURE: use schedule, not reschedule. */
if (!k_work_delayable_remaining_get(&rs_timer)) {
k_work_reschedule(&rs_timer, K_MSEC(RS_TIMEOUT));
}
}
out:
k_mutex_unlock(&lock);
}
void net_if_stop_rs(struct net_if *iface)
{
struct net_if_ipv6 *ipv6;
k_mutex_lock(&lock, K_FOREVER);
ipv6 = iface->config.ip.ipv6;
if (!ipv6) {
goto out;
}
NET_DBG("Stopping ND/RS for iface %p", iface);
sys_slist_find_and_remove(&active_rs_timers, &ipv6->rs_node);
out:
k_mutex_unlock(&lock);
}
static inline void iface_ipv6_nd_init(void)
{
k_work_init_delayable(&rs_timer, rs_timeout);
sys_slist_init(&active_rs_timers);
}
#else
#define net_if_start_rs(...)
#define net_if_stop_rs(...)
#define iface_ipv6_nd_init(...)
#endif /* CONFIG_NET_IPV6_ND */
struct net_if_addr *net_if_ipv6_addr_lookup(const struct in6_addr *addr,
struct net_if **ret)
{
struct net_if_addr *ifaddr = NULL;
k_mutex_lock(&lock, K_FOREVER);
STRUCT_SECTION_FOREACH(net_if, iface) {
struct net_if_ipv6 *ipv6 = iface->config.ip.ipv6;
int i;
if (!ipv6) {
continue;
}
for (i = 0; i < NET_IF_MAX_IPV6_ADDR; i++) {
if (!ipv6->unicast[i].is_used ||
ipv6->unicast[i].address.family != AF_INET6) {
continue;
}
if (net_ipv6_is_prefix(
addr->s6_addr,
ipv6->unicast[i].address.in6_addr.s6_addr,
128)) {
if (ret) {
*ret = iface;
}
ifaddr = &ipv6->unicast[i];
goto out;
}
}
}
out:
k_mutex_unlock(&lock);
return ifaddr;
}
struct net_if_addr *net_if_ipv6_addr_lookup_by_iface(struct net_if *iface,
struct in6_addr *addr)
{
struct net_if_addr *ifaddr = NULL;
struct net_if_ipv6 *ipv6;
int i;
k_mutex_lock(&lock, K_FOREVER);
ipv6 = iface->config.ip.ipv6;
if (!ipv6) {
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV6_ADDR; i++) {
if (!ipv6->unicast[i].is_used ||
ipv6->unicast[i].address.family != AF_INET6) {
continue;
}
if (net_ipv6_is_prefix(
addr->s6_addr,
ipv6->unicast[i].address.in6_addr.s6_addr,
128)) {
ifaddr = &ipv6->unicast[i];
goto out;
}
}
out:
k_mutex_unlock(&lock);
return ifaddr;
}
int z_impl_net_if_ipv6_addr_lookup_by_index(const struct in6_addr *addr)
{
struct net_if *iface = NULL;
struct net_if_addr *if_addr;
if_addr = net_if_ipv6_addr_lookup(addr, &iface);
if (!if_addr) {
return 0;
}
return net_if_get_by_iface(iface);
}
#ifdef CONFIG_USERSPACE
static inline int z_vrfy_net_if_ipv6_addr_lookup_by_index(
const struct in6_addr *addr)
{
struct in6_addr addr_v6;
Z_OOPS(z_user_from_copy(&addr_v6, (void *)addr, sizeof(addr_v6)));
return z_impl_net_if_ipv6_addr_lookup_by_index(&addr_v6);
}
#include <syscalls/net_if_ipv6_addr_lookup_by_index_mrsh.c>
#endif
static void address_expired(struct net_if_addr *ifaddr)
{
NET_DBG("IPv6 address %s is deprecated",
net_sprint_ipv6_addr(&ifaddr->address.in6_addr));
ifaddr->addr_state = NET_ADDR_DEPRECATED;
sys_slist_find_and_remove(&active_address_lifetime_timers,
&ifaddr->lifetime.node);
net_timeout_set(&ifaddr->lifetime, 0, 0);
}
static void address_lifetime_timeout(struct k_work *work)
{
uint32_t next_update = UINT32_MAX;
uint32_t current_time = k_uptime_get_32();
struct net_if_addr *current, *next;
ARG_UNUSED(work);
k_mutex_lock(&lock, K_FOREVER);
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&active_address_lifetime_timers,
current, next, lifetime.node) {
struct net_timeout *timeout = &current->lifetime;
uint32_t this_update = net_timeout_evaluate(timeout,
current_time);
if (this_update == 0U) {
address_expired(current);
continue;
}
if (this_update < next_update) {
next_update = this_update;
}
if (current == next) {
break;
}
}
if (next_update != UINT32_MAX) {
NET_DBG("Waiting for %d ms", (int32_t)next_update);
k_work_reschedule(&address_lifetime_timer, K_MSEC(next_update));
}
k_mutex_unlock(&lock);
}
#if defined(CONFIG_NET_TEST)
void net_address_lifetime_timeout(void)
{
address_lifetime_timeout(NULL);
}
#endif
static void address_start_timer(struct net_if_addr *ifaddr, uint32_t vlifetime)
{
sys_slist_append(&active_address_lifetime_timers,
&ifaddr->lifetime.node);
net_timeout_set(&ifaddr->lifetime, vlifetime, k_uptime_get_32());
k_work_reschedule(&address_lifetime_timer, K_NO_WAIT);
}
void net_if_ipv6_addr_update_lifetime(struct net_if_addr *ifaddr,
uint32_t vlifetime)
{
k_mutex_lock(&lock, K_FOREVER);
NET_DBG("Updating expire time of %s by %u secs",
net_sprint_ipv6_addr(&ifaddr->address.in6_addr),
vlifetime);
ifaddr->addr_state = NET_ADDR_PREFERRED;
address_start_timer(ifaddr, vlifetime);
k_mutex_unlock(&lock);
}
static struct net_if_addr *ipv6_addr_find(struct net_if *iface,
struct in6_addr *addr)
{
struct net_if_ipv6 *ipv6 = iface->config.ip.ipv6;
int i;
for (i = 0; i < NET_IF_MAX_IPV6_ADDR; i++) {
if (!ipv6->unicast[i].is_used) {
continue;
}
if (net_ipv6_addr_cmp(
addr, &ipv6->unicast[i].address.in6_addr)) {
return &ipv6->unicast[i];
}
}
return NULL;
}
static inline void net_if_addr_init(struct net_if_addr *ifaddr,
struct in6_addr *addr,
enum net_addr_type addr_type,
uint32_t vlifetime)
{
ifaddr->is_used = true;
ifaddr->address.family = AF_INET6;
ifaddr->addr_type = addr_type;
net_ipaddr_copy(&ifaddr->address.in6_addr, addr);
/* FIXME - set the mcast addr for this node */
if (vlifetime) {
ifaddr->is_infinite = false;
NET_DBG("Expiring %s in %u secs",
net_sprint_ipv6_addr(addr),
vlifetime);
net_if_ipv6_addr_update_lifetime(ifaddr, vlifetime);
} else {
ifaddr->is_infinite = true;
}
}
struct net_if_addr *net_if_ipv6_addr_add(struct net_if *iface,
struct in6_addr *addr,
enum net_addr_type addr_type,
uint32_t vlifetime)
{
struct net_if_addr *ifaddr = NULL;
struct net_if_ipv6 *ipv6;
int i;
k_mutex_lock(&lock, K_FOREVER);
if (net_if_config_ipv6_get(iface, &ipv6) < 0) {
goto out;
}
ifaddr = ipv6_addr_find(iface, addr);
if (ifaddr) {
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV6_ADDR; i++) {
if (ipv6->unicast[i].is_used) {
continue;
}
net_if_addr_init(&ipv6->unicast[i], addr, addr_type,
vlifetime);
NET_DBG("[%d] interface %p address %s type %s added", i,
iface, net_sprint_ipv6_addr(addr),
net_addr_type2str(addr_type));
if (!(l2_flags_get(iface) & NET_L2_POINT_TO_POINT) &&
!net_ipv6_is_addr_loopback(addr)) {
/* RFC 4862 5.4.2
* Before sending a Neighbor Solicitation, an interface
* MUST join the all-nodes multicast address and the
* solicited-node multicast address of the tentative
* address.
*/
/* The allnodes multicast group is only joined once as
* net_ipv6_mcast_join() checks if we have already
* joined.
*/
join_mcast_nodes(iface,
&ipv6->unicast[i].address.in6_addr);
net_if_ipv6_start_dad(iface, &ipv6->unicast[i]);
} else {
/* If DAD is not done for point-to-point links, then
* the address is usable immediately.
*/
ipv6->unicast[i].addr_state = NET_ADDR_PREFERRED;
}
net_mgmt_event_notify_with_info(
NET_EVENT_IPV6_ADDR_ADD, iface,
&ipv6->unicast[i].address.in6_addr,
sizeof(struct in6_addr));
ifaddr = &ipv6->unicast[i];
goto out;
}
out:
k_mutex_unlock(&lock);
return ifaddr;
}
bool net_if_ipv6_addr_rm(struct net_if *iface, const struct in6_addr *addr)
{
bool ret = false;
struct net_if_ipv6 *ipv6;
int i;
NET_ASSERT(addr);
k_mutex_lock(&lock, K_FOREVER);
ipv6 = iface->config.ip.ipv6;
if (!ipv6) {
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV6_ADDR; i++) {
struct in6_addr maddr;
if (!ipv6->unicast[i].is_used) {
continue;
}
if (!net_ipv6_addr_cmp(&ipv6->unicast[i].address.in6_addr,
addr)) {
continue;
}
if (!ipv6->unicast[i].is_infinite) {
sys_slist_find_and_remove(
&active_address_lifetime_timers,
&ipv6->unicast[i].lifetime.node);
if (sys_slist_is_empty(
&active_address_lifetime_timers)) {
k_work_cancel_delayable(
&address_lifetime_timer);
}
}
ipv6->unicast[i].is_used = false;
net_ipv6_addr_create_solicited_node(addr, &maddr);
net_if_ipv6_maddr_rm(iface, &maddr);
NET_DBG("[%d] interface %p address %s type %s removed",
i, iface, net_sprint_ipv6_addr(addr),
net_addr_type2str(ipv6->unicast[i].addr_type));
/* Using the IPv6 address pointer here can give false
* info if someone adds a new IP address into this position
* in the address array. This is quite unlikely thou.
*/
net_mgmt_event_notify_with_info(
NET_EVENT_IPV6_ADDR_DEL,
iface,
&ipv6->unicast[i].address.in6_addr,
sizeof(struct in6_addr));
ret = true;
goto out;
}
out:
k_mutex_unlock(&lock);
return ret;
}
bool z_impl_net_if_ipv6_addr_add_by_index(int index,
struct in6_addr *addr,
enum net_addr_type addr_type,
uint32_t vlifetime)
{
struct net_if *iface;
iface = net_if_get_by_index(index);
if (!iface) {
return false;
}
return net_if_ipv6_addr_add(iface, addr, addr_type, vlifetime) ?
true : false;
}
#ifdef CONFIG_USERSPACE
bool z_vrfy_net_if_ipv6_addr_add_by_index(int index,
struct in6_addr *addr,
enum net_addr_type addr_type,
uint32_t vlifetime)
{
struct in6_addr addr_v6;
struct net_if *iface;
iface = z_vrfy_net_if_get_by_index(index);
if (!iface) {
return false;
}
Z_OOPS(z_user_from_copy(&addr_v6, (void *)addr, sizeof(addr_v6)));
return z_impl_net_if_ipv6_addr_add_by_index(index,
&addr_v6,
addr_type,
vlifetime);
}
#include <syscalls/net_if_ipv6_addr_add_by_index_mrsh.c>
#endif /* CONFIG_USERSPACE */
bool z_impl_net_if_ipv6_addr_rm_by_index(int index,
const struct in6_addr *addr)
{
struct net_if *iface;
iface = net_if_get_by_index(index);
if (!iface) {
return false;
}
return net_if_ipv6_addr_rm(iface, addr);
}
#ifdef CONFIG_USERSPACE
bool z_vrfy_net_if_ipv6_addr_rm_by_index(int index,
const struct in6_addr *addr)
{
struct in6_addr addr_v6;
struct net_if *iface;
iface = z_vrfy_net_if_get_by_index(index);
if (!iface) {
return false;
}
Z_OOPS(z_user_from_copy(&addr_v6, (void *)addr, sizeof(addr_v6)));
return z_impl_net_if_ipv6_addr_rm_by_index(index, &addr_v6);
}
#include <syscalls/net_if_ipv6_addr_rm_by_index_mrsh.c>
#endif /* CONFIG_USERSPACE */
struct net_if_mcast_addr *net_if_ipv6_maddr_add(struct net_if *iface,
const struct in6_addr *addr)
{
struct net_if_mcast_addr *ifmaddr = NULL;
struct net_if_ipv6 *ipv6;
int i;
k_mutex_lock(&lock, K_FOREVER);
if (net_if_config_ipv6_get(iface, &ipv6) < 0) {
goto out;
}
if (!net_ipv6_is_addr_mcast(addr)) {
NET_DBG("Address %s is not a multicast address.",
net_sprint_ipv6_addr(addr));
goto out;
}
if (net_if_ipv6_maddr_lookup(addr, &iface)) {
NET_WARN("Multicast address %s is is already registered.",
net_sprint_ipv6_addr(addr));
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV6_MADDR; i++) {
if (ipv6->mcast[i].is_used) {
continue;
}
ipv6->mcast[i].is_used = true;
ipv6->mcast[i].address.family = AF_INET6;
memcpy(&ipv6->mcast[i].address.in6_addr, addr, 16);
NET_DBG("[%d] interface %p address %s added", i, iface,
net_sprint_ipv6_addr(addr));
net_mgmt_event_notify_with_info(
NET_EVENT_IPV6_MADDR_ADD, iface,
&ipv6->mcast[i].address.in6_addr,
sizeof(struct in6_addr));
ifmaddr = &ipv6->mcast[i];
goto out;
}
out:
k_mutex_unlock(&lock);
return ifmaddr;
}
bool net_if_ipv6_maddr_rm(struct net_if *iface, const struct in6_addr *addr)
{
bool ret = false;
struct net_if_ipv6 *ipv6;
int i;
k_mutex_lock(&lock, K_FOREVER);
ipv6 = iface->config.ip.ipv6;
if (!ipv6) {
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV6_MADDR; i++) {
if (!ipv6->mcast[i].is_used) {
continue;
}
if (!net_ipv6_addr_cmp(&ipv6->mcast[i].address.in6_addr,
addr)) {
continue;
}
ipv6->mcast[i].is_used = false;
NET_DBG("[%d] interface %p address %s removed",
i, iface, net_sprint_ipv6_addr(addr));
net_mgmt_event_notify_with_info(
NET_EVENT_IPV6_MADDR_DEL, iface,
&ipv6->mcast[i].address.in6_addr,
sizeof(struct in6_addr));
ret = true;
goto out;
}
out:
k_mutex_unlock(&lock);
return ret;
}
struct net_if_mcast_addr *net_if_ipv6_maddr_lookup(const struct in6_addr *maddr,
struct net_if **ret)
{
struct net_if_mcast_addr *ifmaddr = NULL;
k_mutex_lock(&lock, K_FOREVER);
STRUCT_SECTION_FOREACH(net_if, iface) {
struct net_if_ipv6 *ipv6 = iface->config.ip.ipv6;
int i;
if (ret && *ret && iface != *ret) {
continue;
}
if (!ipv6) {
continue;
}
for (i = 0; i < NET_IF_MAX_IPV6_MADDR; i++) {
if (!ipv6->mcast[i].is_used ||
ipv6->mcast[i].address.family != AF_INET6) {
continue;
}
if (net_ipv6_is_prefix(
maddr->s6_addr,
ipv6->mcast[i].address.in6_addr.s6_addr,
128)) {
if (ret) {
*ret = iface;
}
ifmaddr = &ipv6->mcast[i];
goto out;
}
}
}
out:
k_mutex_unlock(&lock);
return ifmaddr;
}
void net_if_ipv6_maddr_leave(struct net_if_mcast_addr *addr)
{
NET_ASSERT(addr);
k_mutex_lock(&lock, K_FOREVER);
addr->is_joined = false;
k_mutex_unlock(&lock);
}
void net_if_ipv6_maddr_join(struct net_if_mcast_addr *addr)
{
NET_ASSERT(addr);
k_mutex_lock(&lock, K_FOREVER);
addr->is_joined = true;
k_mutex_unlock(&lock);
}
static void remove_prefix_addresses(struct net_if *iface,
struct net_if_ipv6 *ipv6,
struct in6_addr *addr,
uint8_t len)
{
int i;
for (i = 0; i < NET_IF_MAX_IPV6_ADDR; i++) {
if (!ipv6->unicast[i].is_used ||
ipv6->unicast[i].address.family != AF_INET6 ||
ipv6->unicast[i].addr_type != NET_ADDR_AUTOCONF) {
continue;
}
if (net_ipv6_is_prefix(
addr->s6_addr,
ipv6->unicast[i].address.in6_addr.s6_addr,
len)) {
net_if_ipv6_addr_rm(iface,
&ipv6->unicast[i].address.in6_addr);
}
}
}
static void prefix_lifetime_expired(struct net_if_ipv6_prefix *ifprefix)
{
struct net_if_ipv6 *ipv6;
NET_DBG("Prefix %s/%d expired",
net_sprint_ipv6_addr(&ifprefix->prefix),
ifprefix->len);
ifprefix->is_used = false;
if (net_if_config_ipv6_get(ifprefix->iface, &ipv6) < 0) {
return;
}
/* Remove also all auto addresses if the they have the same prefix.
*/
remove_prefix_addresses(ifprefix->iface, ipv6, &ifprefix->prefix,
ifprefix->len);
net_mgmt_event_notify_with_info(
NET_EVENT_IPV6_PREFIX_DEL, ifprefix->iface,
&ifprefix->prefix, sizeof(struct in6_addr));
}
static void prefix_timer_remove(struct net_if_ipv6_prefix *ifprefix)
{
k_mutex_lock(&lock, K_FOREVER);
NET_DBG("IPv6 prefix %s/%d removed",
net_sprint_ipv6_addr(&ifprefix->prefix),
ifprefix->len);
sys_slist_find_and_remove(&active_prefix_lifetime_timers,
&ifprefix->lifetime.node);
net_timeout_set(&ifprefix->lifetime, 0, 0);
k_mutex_unlock(&lock);
}
static void prefix_lifetime_timeout(struct k_work *work)
{
uint32_t next_update = UINT32_MAX;
uint32_t current_time = k_uptime_get_32();
struct net_if_ipv6_prefix *current, *next;
ARG_UNUSED(work);
k_mutex_lock(&lock, K_FOREVER);
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&active_prefix_lifetime_timers,
current, next, lifetime.node) {
struct net_timeout *timeout = &current->lifetime;
uint32_t this_update = net_timeout_evaluate(timeout,
current_time);
if (this_update == 0U) {
prefix_lifetime_expired(current);
continue;
}
if (this_update < next_update) {
next_update = this_update;
}
if (current == next) {
break;
}
}
if (next_update != UINT32_MAX) {
k_work_reschedule(&prefix_lifetime_timer, K_MSEC(next_update));
}
k_mutex_unlock(&lock);
}
static void prefix_start_timer(struct net_if_ipv6_prefix *ifprefix,
uint32_t lifetime)
{
k_mutex_lock(&lock, K_FOREVER);
(void)sys_slist_find_and_remove(&active_prefix_lifetime_timers,
&ifprefix->lifetime.node);
sys_slist_append(&active_prefix_lifetime_timers,
&ifprefix->lifetime.node);
net_timeout_set(&ifprefix->lifetime, lifetime, k_uptime_get_32());
k_work_reschedule(&prefix_lifetime_timer, K_NO_WAIT);
k_mutex_unlock(&lock);
}
static struct net_if_ipv6_prefix *ipv6_prefix_find(struct net_if *iface,
struct in6_addr *prefix,
uint8_t prefix_len)
{
struct net_if_ipv6 *ipv6 = iface->config.ip.ipv6;
int i;
if (!ipv6) {
return NULL;
}
for (i = 0; i < NET_IF_MAX_IPV6_PREFIX; i++) {
if (!ipv6->prefix[i].is_used) {
continue;
}
if (net_ipv6_addr_cmp(prefix, &ipv6->prefix[i].prefix) &&
prefix_len == ipv6->prefix[i].len) {
return &ipv6->prefix[i];
}
}
return NULL;
}
static void net_if_ipv6_prefix_init(struct net_if *iface,
struct net_if_ipv6_prefix *ifprefix,
struct in6_addr *addr, uint8_t len,
uint32_t lifetime)
{
ifprefix->is_used = true;
ifprefix->len = len;
ifprefix->iface = iface;
net_ipaddr_copy(&ifprefix->prefix, addr);
if (lifetime == NET_IPV6_ND_INFINITE_LIFETIME) {
ifprefix->is_infinite = true;
} else {
ifprefix->is_infinite = false;
}
}
struct net_if_ipv6_prefix *net_if_ipv6_prefix_add(struct net_if *iface,
struct in6_addr *prefix,
uint8_t len,
uint32_t lifetime)
{
struct net_if_ipv6_prefix *ifprefix = NULL;
struct net_if_ipv6 *ipv6;
int i;
k_mutex_lock(&lock, K_FOREVER);
if (net_if_config_ipv6_get(iface, &ipv6) < 0) {
goto out;
}
ifprefix = ipv6_prefix_find(iface, prefix, len);
if (ifprefix) {
goto out;
}
if (!ipv6) {
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV6_PREFIX; i++) {
if (ipv6->prefix[i].is_used) {
continue;
}
net_if_ipv6_prefix_init(iface, &ipv6->prefix[i], prefix,
len, lifetime);
NET_DBG("[%d] interface %p prefix %s/%d added", i, iface,
net_sprint_ipv6_addr(prefix), len);
net_mgmt_event_notify_with_info(
NET_EVENT_IPV6_PREFIX_ADD, iface,
&ipv6->prefix[i].prefix, sizeof(struct in6_addr));
ifprefix = &ipv6->prefix[i];
goto out;
}
out:
k_mutex_unlock(&lock);
return ifprefix;
}
bool net_if_ipv6_prefix_rm(struct net_if *iface, struct in6_addr *addr,
uint8_t len)
{
bool ret = false;
struct net_if_ipv6 *ipv6;
int i;
k_mutex_lock(&lock, K_FOREVER);
ipv6 = iface->config.ip.ipv6;
if (!ipv6) {
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV6_PREFIX; i++) {
if (!ipv6->prefix[i].is_used) {
continue;
}
if (!net_ipv6_addr_cmp(&ipv6->prefix[i].prefix, addr) ||
ipv6->prefix[i].len != len) {
continue;
}
net_if_ipv6_prefix_unset_timer(&ipv6->prefix[i]);
ipv6->prefix[i].is_used = false;
/* Remove also all auto addresses if the they have the same
* prefix.
*/
remove_prefix_addresses(iface, ipv6, addr, len);
net_mgmt_event_notify_with_info(
NET_EVENT_IPV6_PREFIX_DEL, iface,
&ipv6->prefix[i].prefix, sizeof(struct in6_addr));
ret = true;
goto out;
}
out:
k_mutex_unlock(&lock);
return ret;
}
struct net_if_ipv6_prefix *net_if_ipv6_prefix_get(struct net_if *iface,
struct in6_addr *addr)
{
struct net_if_ipv6_prefix *prefix = NULL;
struct net_if_ipv6 *ipv6;
int i;
k_mutex_lock(&lock, K_FOREVER);
if (!iface) {
iface = net_if_get_default();
}
ipv6 = iface->config.ip.ipv6;
if (!ipv6) {
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV6_PREFIX; i++) {
if (!ipv6->prefix[i].is_used) {
continue;
}
if (net_ipv6_is_prefix(ipv6->prefix[i].prefix.s6_addr,
addr->s6_addr,
ipv6->prefix[i].len)) {
if (!prefix || prefix->len > ipv6->prefix[i].len) {
prefix = &ipv6->prefix[i];
}
}
}
out:
k_mutex_unlock(&lock);
return prefix;
}
struct net_if_ipv6_prefix *net_if_ipv6_prefix_lookup(struct net_if *iface,
struct in6_addr *addr,
uint8_t len)
{
struct net_if_ipv6_prefix *prefix = NULL;
struct net_if_ipv6 *ipv6;
int i;
k_mutex_lock(&lock, K_FOREVER);
ipv6 = iface->config.ip.ipv6;
if (!ipv6) {
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV6_PREFIX; i++) {
if (!ipv6->prefix[i].is_used) {
continue;
}
if (net_ipv6_is_prefix(ipv6->prefix[i].prefix.s6_addr,
addr->s6_addr, len)) {
prefix = &ipv6->prefix[i];
goto out;
}
}
out:
k_mutex_unlock(&lock);
return prefix;
}
bool net_if_ipv6_addr_onlink(struct net_if **iface, struct in6_addr *addr)
{
bool ret = false;
k_mutex_lock(&lock, K_FOREVER);
STRUCT_SECTION_FOREACH(net_if, tmp) {
struct net_if_ipv6 *ipv6 = tmp->config.ip.ipv6;
int i;
if (iface && *iface && *iface != tmp) {
continue;
}
if (!ipv6) {
continue;
}
for (i = 0; i < NET_IF_MAX_IPV6_PREFIX; i++) {
if (ipv6->prefix[i].is_used &&
net_ipv6_is_prefix(ipv6->prefix[i].prefix.s6_addr,
addr->s6_addr,
ipv6->prefix[i].len)) {
if (iface) {
*iface = tmp;
}
ret = true;
goto out;
}
}
}
out:
k_mutex_unlock(&lock);
return ret;
}
void net_if_ipv6_prefix_set_timer(struct net_if_ipv6_prefix *prefix,
uint32_t lifetime)
{
/* No need to set a timer for infinite timeout */
if (lifetime == 0xffffffff) {
return;
}
NET_DBG("Prefix lifetime %u sec", lifetime);
prefix_start_timer(prefix, lifetime);
}
void net_if_ipv6_prefix_unset_timer(struct net_if_ipv6_prefix *prefix)
{
if (!prefix->is_used) {
return;
}
prefix_timer_remove(prefix);
}
struct net_if_router *net_if_ipv6_router_lookup(struct net_if *iface,
struct in6_addr *addr)
{
return iface_router_lookup(iface, AF_INET6, addr);
}
struct net_if_router *net_if_ipv6_router_find_default(struct net_if *iface,
struct in6_addr *addr)
{
return iface_router_find_default(iface, AF_INET6, addr);
}
void net_if_ipv6_router_update_lifetime(struct net_if_router *router,
uint16_t lifetime)
{
NET_DBG("Updating expire time of %s by %u secs",
net_sprint_ipv6_addr(&router->address.in6_addr),
lifetime);
router->life_start = k_uptime_get_32();
router->lifetime = lifetime;
iface_router_update_timer(router->life_start);
}
struct net_if_router *net_if_ipv6_router_add(struct net_if *iface,
struct in6_addr *addr,
uint16_t lifetime)
{
return iface_router_add(iface, AF_INET6, addr, false, lifetime);
}
bool net_if_ipv6_router_rm(struct net_if_router *router)
{
return iface_router_rm(router);
}
uint8_t net_if_ipv6_get_hop_limit(struct net_if *iface)
{
#if defined(CONFIG_NET_NATIVE_IPV6)
int ret = 0;
k_mutex_lock(&lock, K_FOREVER);
if (!iface->config.ip.ipv6) {
goto out;
}
ret = iface->config.ip.ipv6->hop_limit;
out:
k_mutex_unlock(&lock);
return ret;
#else
ARG_UNUSED(iface);
return 0;
#endif
}
void net_ipv6_set_hop_limit(struct net_if *iface, uint8_t hop_limit)
{
#if defined(CONFIG_NET_NATIVE_IPV6)
k_mutex_lock(&lock, K_FOREVER);
if (!iface->config.ip.ipv6) {
goto out;
}
iface->config.ip.ipv6->hop_limit = hop_limit;
out:
k_mutex_unlock(&lock);
#else
ARG_UNUSED(iface);
ARG_UNUSED(hop_limit);
#endif
}
struct in6_addr *net_if_ipv6_get_ll(struct net_if *iface,
enum net_addr_state addr_state)
{
struct in6_addr *addr = NULL;
struct net_if_ipv6 *ipv6;
int i;
k_mutex_lock(&lock, K_FOREVER);
ipv6 = iface->config.ip.ipv6;
if (!ipv6) {
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV6_ADDR; i++) {
if (!ipv6->unicast[i].is_used ||
(addr_state != NET_ADDR_ANY_STATE &&
ipv6->unicast[i].addr_state != addr_state) ||
ipv6->unicast[i].address.family != AF_INET6) {
continue;
}
if (net_ipv6_is_ll_addr(&ipv6->unicast[i].address.in6_addr)) {
addr = &ipv6->unicast[i].address.in6_addr;
goto out;
}
}
out:
k_mutex_unlock(&lock);
return addr;
}
struct in6_addr *net_if_ipv6_get_ll_addr(enum net_addr_state state,
struct net_if **iface)
{
struct in6_addr *addr = NULL;
k_mutex_lock(&lock, K_FOREVER);
STRUCT_SECTION_FOREACH(net_if, tmp) {
addr = net_if_ipv6_get_ll(tmp, state);
if (addr) {
if (iface) {
*iface = tmp;
}
goto out;
}
}
out:
k_mutex_unlock(&lock);
return addr;
}
static inline struct in6_addr *check_global_addr(struct net_if *iface,
enum net_addr_state state)
{
struct net_if_ipv6 *ipv6 = iface->config.ip.ipv6;
int i;
if (!ipv6) {
return NULL;
}
for (i = 0; i < NET_IF_MAX_IPV6_ADDR; i++) {
if (!ipv6->unicast[i].is_used ||
(ipv6->unicast[i].addr_state != state) ||
ipv6->unicast[i].address.family != AF_INET6) {
continue;
}
if (!net_ipv6_is_ll_addr(&ipv6->unicast[i].address.in6_addr)) {
return &ipv6->unicast[i].address.in6_addr;
}
}
return NULL;
}
struct in6_addr *net_if_ipv6_get_global_addr(enum net_addr_state state,
struct net_if **iface)
{
struct in6_addr *addr = NULL;
k_mutex_lock(&lock, K_FOREVER);
STRUCT_SECTION_FOREACH(net_if, tmp) {
if (iface && *iface && tmp != *iface) {
continue;
}
addr = check_global_addr(tmp, state);
if (addr) {
if (iface) {
*iface = tmp;
}
goto out;
}
}
out:
k_mutex_unlock(&lock);
return addr;
}
static uint8_t get_diff_ipv6(const struct in6_addr *src,
const struct in6_addr *dst)
{
return get_ipaddr_diff((const uint8_t *)src, (const uint8_t *)dst, 16);
}
static inline bool is_proper_ipv6_address(struct net_if_addr *addr)
{
if (addr->is_used && addr->addr_state == NET_ADDR_PREFERRED &&
addr->address.family == AF_INET6 &&
!net_ipv6_is_ll_addr(&addr->address.in6_addr)) {
return true;
}
return false;
}
static struct in6_addr *net_if_ipv6_get_best_match(struct net_if *iface,
const struct in6_addr *dst,
uint8_t *best_so_far)
{
struct net_if_ipv6 *ipv6 = iface->config.ip.ipv6;
struct in6_addr *src = NULL;
uint8_t len;
int i;
if (!ipv6) {
return NULL;
}
for (i = 0; i < NET_IF_MAX_IPV6_ADDR; i++) {
if (!is_proper_ipv6_address(&ipv6->unicast[i])) {
continue;
}
len = get_diff_ipv6(dst, &ipv6->unicast[i].address.in6_addr);
if (len >= *best_so_far) {
/* Mesh local address can only be selected for the same
* subnet.
*/
if (ipv6->unicast[i].is_mesh_local && len < 64 &&
!net_ipv6_is_addr_mcast_mesh(dst)) {
continue;
}
*best_so_far = len;
src = &ipv6->unicast[i].address.in6_addr;
}
}
return src;
}
const struct in6_addr *net_if_ipv6_select_src_addr(struct net_if *dst_iface,
const struct in6_addr *dst)
{
const struct in6_addr *src = NULL;
uint8_t best_match = 0U;
k_mutex_lock(&lock, K_FOREVER);
if (!net_ipv6_is_ll_addr(dst) && !net_ipv6_is_addr_mcast_link(dst)) {
/* If caller has supplied interface, then use that */
if (dst_iface) {
src = net_if_ipv6_get_best_match(dst_iface, dst,
&best_match);
} else {
STRUCT_SECTION_FOREACH(net_if, iface) {
struct in6_addr *addr;
addr = net_if_ipv6_get_best_match(iface, dst,
&best_match);
if (addr) {
src = addr;
}
}
}
} else {
if (dst_iface) {
src = net_if_ipv6_get_ll(dst_iface, NET_ADDR_PREFERRED);
} else {
STRUCT_SECTION_FOREACH(net_if, iface) {
struct in6_addr *addr;
addr = net_if_ipv6_get_ll(iface,
NET_ADDR_PREFERRED);
if (addr) {
src = addr;
break;
}
}
}
}
if (!src) {
src = net_ipv6_unspecified_address();
goto out;
}
out:
k_mutex_unlock(&lock);
return src;
}
struct net_if *net_if_ipv6_select_src_iface(const struct in6_addr *dst)
{
struct net_if *iface = NULL;
const struct in6_addr *src;
k_mutex_lock(&lock, K_FOREVER);
src = net_if_ipv6_select_src_addr(NULL, dst);
if (src != net_ipv6_unspecified_address()) {
net_if_ipv6_addr_lookup(src, &iface);
}
if (iface == NULL) {
iface = net_if_get_default();
}
k_mutex_unlock(&lock);
return iface;
}
uint32_t net_if_ipv6_calc_reachable_time(struct net_if_ipv6 *ipv6)
{
uint32_t min_reachable, max_reachable;
k_mutex_lock(&lock, K_FOREVER);
min_reachable = (MIN_RANDOM_NUMER * ipv6->base_reachable_time)
/ MIN_RANDOM_DENOM;
max_reachable = (MAX_RANDOM_NUMER * ipv6->base_reachable_time)
/ MAX_RANDOM_DENOM;
k_mutex_unlock(&lock);
NET_DBG("min_reachable:%u max_reachable:%u", min_reachable,
max_reachable);
return min_reachable +
sys_rand32_get() % (max_reachable - min_reachable);
}
static void iface_ipv6_start(struct net_if *iface)
{
if (!net_if_flag_is_set(iface, NET_IF_IPV6)) {
return;
}
if (IS_ENABLED(CONFIG_NET_IPV6_DAD)) {
net_if_start_dad(iface);
} else {
struct net_if_ipv6 *ipv6 __unused = iface->config.ip.ipv6;
join_mcast_nodes(iface,
&ipv6->mcast[0].address.in6_addr);
}
net_if_start_rs(iface);
}
static void iface_ipv6_init(int if_count)
{
int i;
iface_ipv6_dad_init();
iface_ipv6_nd_init();
k_work_init_delayable(&address_lifetime_timer,
address_lifetime_timeout);
k_work_init_delayable(&prefix_lifetime_timer, prefix_lifetime_timeout);
if (if_count > ARRAY_SIZE(ipv6_addresses)) {
NET_WARN("You have %zu IPv6 net_if addresses but %d "
"network interfaces", ARRAY_SIZE(ipv6_addresses),
if_count);
NET_WARN("Consider increasing CONFIG_NET_IF_MAX_IPV6_COUNT "
"value.");
}
for (i = 0; i < ARRAY_SIZE(ipv6_addresses); i++) {
ipv6_addresses[i].ipv6.hop_limit = CONFIG_NET_INITIAL_HOP_LIMIT;
ipv6_addresses[i].ipv6.base_reachable_time = REACHABLE_TIME;
net_if_ipv6_set_reachable_time(&ipv6_addresses[i].ipv6);
}
}
#else
#define join_mcast_allnodes(...)
#define join_mcast_solicit_node(...)
#define leave_mcast_all(...)
#define join_mcast_nodes(...)
#define iface_ipv6_start(...)
#define iface_ipv6_init(...)
struct net_if_mcast_addr *net_if_ipv6_maddr_lookup(const struct in6_addr *addr,
struct net_if **iface)
{
ARG_UNUSED(addr);
ARG_UNUSED(iface);
return NULL;
}
struct net_if_addr *net_if_ipv6_addr_lookup(const struct in6_addr *addr,
struct net_if **ret)
{
ARG_UNUSED(addr);
ARG_UNUSED(ret);
return NULL;
}
struct in6_addr *net_if_ipv6_get_global_addr(enum net_addr_state state,
struct net_if **iface)
{
ARG_UNUSED(state);
ARG_UNUSED(iface);
return NULL;
}
#endif /* CONFIG_NET_IPV6 */
#if defined(CONFIG_NET_NATIVE_IPV4)
int net_if_config_ipv4_get(struct net_if *iface, struct net_if_ipv4 **ipv4)
{
int ret = 0;
int i;
k_mutex_lock(&lock, K_FOREVER);
if (!net_if_flag_is_set(iface, NET_IF_IPV4)) {
ret = -ENOTSUP;
goto out;
}
if (iface->config.ip.ipv4) {
if (ipv4) {
*ipv4 = iface->config.ip.ipv4;
}
goto out;
}
for (i = 0; i < ARRAY_SIZE(ipv4_addresses); i++) {
if (ipv4_addresses[i].iface) {
continue;
}
iface->config.ip.ipv4 = &ipv4_addresses[i].ipv4;
ipv4_addresses[i].iface = iface;
if (ipv4) {
*ipv4 = &ipv4_addresses[i].ipv4;
}
goto out;
}
ret = -ESRCH;
out:
k_mutex_unlock(&lock);
return ret;
}
int net_if_config_ipv4_put(struct net_if *iface)
{
int ret = 0;
int i;
k_mutex_lock(&lock, K_FOREVER);
if (!net_if_flag_is_set(iface, NET_IF_IPV4)) {
ret = -ENOTSUP;
goto out;
}
if (!iface->config.ip.ipv4) {
ret = -EALREADY;
goto out;
}
for (i = 0; i < ARRAY_SIZE(ipv4_addresses); i++) {
if (ipv4_addresses[i].iface != iface) {
continue;
}
iface->config.ip.ipv4 = NULL;
ipv4_addresses[i].iface = NULL;
goto out;
}
ret = -ESRCH;
out:
k_mutex_unlock(&lock);
return ret;
}
uint8_t net_if_ipv4_get_ttl(struct net_if *iface)
{
#if defined(CONFIG_NET_NATIVE_IPV4)
int ret = 0;
k_mutex_lock(&lock, K_FOREVER);
if (!iface->config.ip.ipv4) {
goto out;
}
ret = iface->config.ip.ipv4->ttl;
out:
k_mutex_unlock(&lock);
return ret;
#else
ARG_UNUSED(iface);
return 0;
#endif
}
void net_if_ipv4_set_ttl(struct net_if *iface, uint8_t ttl)
{
#if defined(CONFIG_NET_NATIVE_IPV4)
k_mutex_lock(&lock, K_FOREVER);
if (!iface->config.ip.ipv4) {
goto out;
}
iface->config.ip.ipv4->ttl = ttl;
out:
k_mutex_unlock(&lock);
#else
ARG_UNUSED(iface);
ARG_UNUSED(ttl);
#endif
}
struct net_if_router *net_if_ipv4_router_lookup(struct net_if *iface,
struct in_addr *addr)
{
return iface_router_lookup(iface, AF_INET, addr);
}
struct net_if_router *net_if_ipv4_router_find_default(struct net_if *iface,
struct in_addr *addr)
{
return iface_router_find_default(iface, AF_INET, addr);
}
struct net_if_router *net_if_ipv4_router_add(struct net_if *iface,
struct in_addr *addr,
bool is_default,
uint16_t lifetime)
{
return iface_router_add(iface, AF_INET, addr, is_default, lifetime);
}
bool net_if_ipv4_router_rm(struct net_if_router *router)
{
return iface_router_rm(router);
}
bool net_if_ipv4_addr_mask_cmp(struct net_if *iface,
const struct in_addr *addr)
{
bool ret = false;
struct net_if_ipv4 *ipv4;
uint32_t subnet;
int i;
k_mutex_lock(&lock, K_FOREVER);
ipv4 = iface->config.ip.ipv4;
if (!ipv4) {
goto out;
}
subnet = UNALIGNED_GET(&addr->s_addr) & ipv4->netmask.s_addr;
for (i = 0; i < NET_IF_MAX_IPV4_ADDR; i++) {
if (!ipv4->unicast[i].is_used ||
ipv4->unicast[i].address.family != AF_INET) {
continue;
}
if ((ipv4->unicast[i].address.in_addr.s_addr &
ipv4->netmask.s_addr) == subnet) {
ret = true;
goto out;
}
}
out:
k_mutex_unlock(&lock);
return ret;
}
static bool ipv4_is_broadcast_address(struct net_if *iface,
const struct in_addr *addr)
{
struct net_if_ipv4 *ipv4 = iface->config.ip.ipv4;
if (!ipv4) {
return false;
}
if (!net_if_ipv4_addr_mask_cmp(iface, addr)) {
return false;
}
if ((UNALIGNED_GET(&addr->s_addr) & ~ipv4->netmask.s_addr) ==
~ipv4->netmask.s_addr) {
return true;
}
return false;
}
bool net_if_ipv4_is_addr_bcast(struct net_if *iface,
const struct in_addr *addr)
{
bool ret = false;
k_mutex_lock(&lock, K_FOREVER);
if (iface) {
ret = ipv4_is_broadcast_address(iface, addr);
goto out;
}
STRUCT_SECTION_FOREACH(net_if, iface) {
ret = ipv4_is_broadcast_address(iface, addr);
if (ret) {
goto out;
}
}
out:
k_mutex_unlock(&lock);
return ret;
}
struct net_if *net_if_ipv4_select_src_iface(const struct in_addr *dst)
{
struct net_if *selected = NULL;
k_mutex_lock(&lock, K_FOREVER);
STRUCT_SECTION_FOREACH(net_if, iface) {
bool ret;
ret = net_if_ipv4_addr_mask_cmp(iface, dst);
if (ret) {
selected = iface;
goto out;
}
}
if (selected == NULL) {
selected = net_if_get_default();
}
out:
k_mutex_unlock(&lock);
return selected;
}
static uint8_t get_diff_ipv4(const struct in_addr *src,
const struct in_addr *dst)
{
return get_ipaddr_diff((const uint8_t *)src, (const uint8_t *)dst, 4);
}
static inline bool is_proper_ipv4_address(struct net_if_addr *addr)
{
if (addr->is_used && addr->addr_state == NET_ADDR_PREFERRED &&
addr->address.family == AF_INET &&
!net_ipv4_is_ll_addr(&addr->address.in_addr)) {
return true;
}
return false;
}
static struct in_addr *net_if_ipv4_get_best_match(struct net_if *iface,
const struct in_addr *dst,
uint8_t *best_so_far)
{
struct net_if_ipv4 *ipv4 = iface->config.ip.ipv4;
struct in_addr *src = NULL;
uint8_t len;
int i;
if (!ipv4) {
return NULL;
}
for (i = 0; i < NET_IF_MAX_IPV4_ADDR; i++) {
if (!is_proper_ipv4_address(&ipv4->unicast[i])) {
continue;
}
len = get_diff_ipv4(dst, &ipv4->unicast[i].address.in_addr);
if (len >= *best_so_far) {
*best_so_far = len;
src = &ipv4->unicast[i].address.in_addr;
}
}
return src;
}
static struct in_addr *if_ipv4_get_addr(struct net_if *iface,
enum net_addr_state addr_state, bool ll)
{
struct in_addr *addr = NULL;
struct net_if_ipv4 *ipv4;
int i;
k_mutex_lock(&lock, K_FOREVER);
if (!iface) {
goto out;
}
ipv4 = iface->config.ip.ipv4;
if (!ipv4) {
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV4_ADDR; i++) {
if (!ipv4->unicast[i].is_used ||
(addr_state != NET_ADDR_ANY_STATE &&
ipv4->unicast[i].addr_state != addr_state) ||
ipv4->unicast[i].address.family != AF_INET) {
continue;
}
if (net_ipv4_is_ll_addr(&ipv4->unicast[i].address.in_addr)) {
if (!ll) {
continue;
}
} else {
if (ll) {
continue;
}
}
addr = &ipv4->unicast[i].address.in_addr;
goto out;
}
out:
k_mutex_unlock(&lock);
return addr;
}
struct in_addr *net_if_ipv4_get_ll(struct net_if *iface,
enum net_addr_state addr_state)
{
return if_ipv4_get_addr(iface, addr_state, true);
}
struct in_addr *net_if_ipv4_get_global_addr(struct net_if *iface,
enum net_addr_state addr_state)
{
return if_ipv4_get_addr(iface, addr_state, false);
}
const struct in_addr *net_if_ipv4_select_src_addr(struct net_if *dst_iface,
const struct in_addr *dst)
{
const struct in_addr *src = NULL;
uint8_t best_match = 0U;
k_mutex_lock(&lock, K_FOREVER);
if (!net_ipv4_is_ll_addr(dst)) {
/* If caller has supplied interface, then use that */
if (dst_iface) {
src = net_if_ipv4_get_best_match(dst_iface, dst,
&best_match);
} else {
STRUCT_SECTION_FOREACH(net_if, iface) {
struct in_addr *addr;
addr = net_if_ipv4_get_best_match(iface, dst,
&best_match);
if (addr) {
src = addr;
}
}
}
} else {
if (dst_iface) {
src = net_if_ipv4_get_ll(dst_iface, NET_ADDR_PREFERRED);
} else {
STRUCT_SECTION_FOREACH(net_if, iface) {
struct in_addr *addr;
addr = net_if_ipv4_get_ll(iface,
NET_ADDR_PREFERRED);
if (addr) {
src = addr;
break;
}
}
}
}
if (!src) {
src = net_if_ipv4_get_global_addr(dst_iface,
NET_ADDR_PREFERRED);
if (!src) {
src = net_ipv4_unspecified_address();
}
goto out;
}
out:
k_mutex_unlock(&lock);
return src;
}
struct net_if_addr *net_if_ipv4_addr_lookup(const struct in_addr *addr,
struct net_if **ret)
{
struct net_if_addr *ifaddr = NULL;
k_mutex_lock(&lock, K_FOREVER);
STRUCT_SECTION_FOREACH(net_if, iface) {
struct net_if_ipv4 *ipv4 = iface->config.ip.ipv4;
int i;
if (!ipv4) {
continue;
}
for (i = 0; i < NET_IF_MAX_IPV4_ADDR; i++) {
if (!ipv4->unicast[i].is_used ||
ipv4->unicast[i].address.family != AF_INET) {
continue;
}
if (UNALIGNED_GET(&addr->s4_addr32[0]) ==
ipv4->unicast[i].address.in_addr.s_addr) {
if (ret) {
*ret = iface;
}
ifaddr = &ipv4->unicast[i];
goto out;
}
}
}
out:
k_mutex_unlock(&lock);
return ifaddr;
}
int z_impl_net_if_ipv4_addr_lookup_by_index(const struct in_addr *addr)
{
struct net_if_addr *if_addr;
struct net_if *iface = NULL;
if_addr = net_if_ipv4_addr_lookup(addr, &iface);
if (!if_addr) {
return 0;
}
return net_if_get_by_iface(iface);
}
#ifdef CONFIG_USERSPACE
static inline int z_vrfy_net_if_ipv4_addr_lookup_by_index(
const struct in_addr *addr)
{
struct in_addr addr_v4;
Z_OOPS(z_user_from_copy(&addr_v4, (void *)addr, sizeof(addr_v4)));
return z_impl_net_if_ipv4_addr_lookup_by_index(&addr_v4);
}
#include <syscalls/net_if_ipv4_addr_lookup_by_index_mrsh.c>
#endif
void net_if_ipv4_set_netmask(struct net_if *iface,
const struct in_addr *netmask)
{
k_mutex_lock(&lock, K_FOREVER);
if (net_if_config_ipv4_get(iface, NULL) < 0) {
goto out;
}
if (!iface->config.ip.ipv4) {
goto out;
}
net_ipaddr_copy(&iface->config.ip.ipv4->netmask, netmask);
out:
k_mutex_unlock(&lock);
}
bool z_impl_net_if_ipv4_set_netmask_by_index(int index,
const struct in_addr *netmask)
{
struct net_if *iface;
iface = net_if_get_by_index(index);
if (!iface) {
return false;
}
net_if_ipv4_set_netmask(iface, netmask);
return true;
}
#ifdef CONFIG_USERSPACE
bool z_vrfy_net_if_ipv4_set_netmask_by_index(int index,
const struct in_addr *netmask)
{
struct in_addr netmask_addr;
struct net_if *iface;
iface = z_vrfy_net_if_get_by_index(index);
if (!iface) {
return false;
}
Z_OOPS(z_user_from_copy(&netmask_addr, (void *)netmask,
sizeof(netmask_addr)));
return z_impl_net_if_ipv4_set_netmask_by_index(index, &netmask_addr);
}
#include <syscalls/net_if_ipv4_set_netmask_by_index_mrsh.c>
#endif /* CONFIG_USERSPACE */
void net_if_ipv4_set_gw(struct net_if *iface, const struct in_addr *gw)
{
k_mutex_lock(&lock, K_FOREVER);
if (net_if_config_ipv4_get(iface, NULL) < 0) {
goto out;
}
if (!iface->config.ip.ipv4) {
goto out;
}
net_ipaddr_copy(&iface->config.ip.ipv4->gw, gw);
out:
k_mutex_unlock(&lock);
}
bool z_impl_net_if_ipv4_set_gw_by_index(int index,
const struct in_addr *gw)
{
struct net_if *iface;
iface = net_if_get_by_index(index);
if (!iface) {
return false;
}
net_if_ipv4_set_gw(iface, gw);
return true;
}
#ifdef CONFIG_USERSPACE
bool z_vrfy_net_if_ipv4_set_gw_by_index(int index,
const struct in_addr *gw)
{
struct in_addr gw_addr;
struct net_if *iface;
iface = z_vrfy_net_if_get_by_index(index);
if (!iface) {
return false;
}
Z_OOPS(z_user_from_copy(&gw_addr, (void *)gw, sizeof(gw_addr)));
return z_impl_net_if_ipv4_set_gw_by_index(index, &gw_addr);
}
#include <syscalls/net_if_ipv4_set_gw_by_index_mrsh.c>
#endif /* CONFIG_USERSPACE */
static struct net_if_addr *ipv4_addr_find(struct net_if *iface,
struct in_addr *addr)
{
struct net_if_ipv4 *ipv4 = iface->config.ip.ipv4;
int i;
for (i = 0; i < NET_IF_MAX_IPV4_ADDR; i++) {
if (!ipv4->unicast[i].is_used) {
continue;
}
if (net_ipv4_addr_cmp(addr,
&ipv4->unicast[i].address.in_addr)) {
return &ipv4->unicast[i];
}
}
return NULL;
}
struct net_if_addr *net_if_ipv4_addr_add(struct net_if *iface,
struct in_addr *addr,
enum net_addr_type addr_type,
uint32_t vlifetime)
{
struct net_if_addr *ifaddr = NULL;
struct net_if_ipv4 *ipv4;
int i;
k_mutex_lock(&lock, K_FOREVER);
if (net_if_config_ipv4_get(iface, &ipv4) < 0) {
goto out;
}
ifaddr = ipv4_addr_find(iface, addr);
if (ifaddr) {
/* TODO: should set addr_type/vlifetime */
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV4_ADDR; i++) {
struct net_if_addr *cur = &ipv4->unicast[i];
if (addr_type == NET_ADDR_DHCP
&& cur->addr_type == NET_ADDR_OVERRIDABLE) {
ifaddr = cur;
break;
}
if (!ipv4->unicast[i].is_used) {
ifaddr = cur;
break;
}
}
if (ifaddr) {
ifaddr->is_used = true;
ifaddr->address.family = AF_INET;
ifaddr->address.in_addr.s4_addr32[0] =
addr->s4_addr32[0];
ifaddr->addr_type = addr_type;
/* Caller has to take care of timers and their expiry */
if (vlifetime) {
ifaddr->is_infinite = false;
} else {
ifaddr->is_infinite = true;
}
/**
* TODO: Handle properly PREFERRED/DEPRECATED state when
* address in use, expired and renewal state.
*/
ifaddr->addr_state = NET_ADDR_PREFERRED;
NET_DBG("[%d] interface %p address %s type %s added", i, iface,
net_sprint_ipv4_addr(addr),
net_addr_type2str(addr_type));
net_mgmt_event_notify_with_info(NET_EVENT_IPV4_ADDR_ADD, iface,
&ifaddr->address.in_addr,
sizeof(struct in_addr));
goto out;
}
out:
k_mutex_unlock(&lock);
return ifaddr;
}
bool net_if_ipv4_addr_rm(struct net_if *iface, const struct in_addr *addr)
{
struct net_if_ipv4 *ipv4;
bool ret = false;
int i;
k_mutex_lock(&lock, K_FOREVER);
ipv4 = iface->config.ip.ipv4;
if (!ipv4) {
goto out;
}
for (i = 0; i < NET_IF_MAX_IPV4_ADDR; i++) {
if (!ipv4->unicast[i].is_used) {
continue;
}
if (!net_ipv4_addr_cmp(&ipv4->unicast[i].address.in_addr,
addr)) {
continue;
}
ipv4->unicast[i].is_used = false;
NET_DBG("[%d] interface %p address %s removed",
i, iface, net_sprint_ipv4_addr(addr));
net_mgmt_event_notify_with_info(
NET_EVENT_IPV4_ADDR_DEL, iface,
&ipv4->unicast[i].address.in_addr,
sizeof(struct in_addr));
ret = true;
goto out;
}
out:
k_mutex_unlock(&lock);
return ret;
}
bool z_impl_net_if_ipv4_addr_add_by_index(int index,
struct in_addr *addr,
enum net_addr_type addr_type,
uint32_t vlifetime)
{
struct net_if *iface;
struct net_if_addr *if_addr;
iface = net_if_get_by_index(index);
if (!iface) {
return false;
}
if_addr = net_if_ipv4_addr_add(iface, addr, addr_type, vlifetime);
return if_addr ? true : false;
}
#ifdef CONFIG_USERSPACE
bool z_vrfy_net_if_ipv4_addr_add_by_index(int index,
struct in_addr *addr,
enum net_addr_type addr_type,
uint32_t vlifetime)
{
struct in_addr addr_v4;
struct net_if *iface;
iface = z_vrfy_net_if_get_by_index(index);
if (!iface) {
return false;
}
Z_OOPS(z_user_from_copy(&addr_v4, (void *)addr, sizeof(addr_v4)));
return z_impl_net_if_ipv4_addr_add_by_index(index,
&addr_v4,
addr_type,
vlifetime);
}
#include <syscalls/net_if_ipv4_addr_add_by_index_mrsh.c>
#endif /* CONFIG_USERSPACE */
bool z_impl_net_if_ipv4_addr_rm_by_index(int index,
const struct in_addr *addr)
{
struct net_if *iface;
iface = net_if_get_by_index(index);
if (!iface) {
return false;
}
return net_if_ipv4_addr_rm(iface, addr);
}
#ifdef CONFIG_USERSPACE
bool z_vrfy_net_if_ipv4_addr_rm_by_index(int index,
const struct in_addr *addr)
{
struct in_addr addr_v4;
struct net_if *iface;
iface = z_vrfy_net_if_get_by_index(index);
if (!iface) {
return false;
}
Z_OOPS(z_user_from_copy(&addr_v4, (void *)addr, sizeof(addr_v4)));
return (uint32_t)z_impl_net_if_ipv4_addr_rm_by_index(index, &addr_v4);
}
#include <syscalls/net_if_ipv4_addr_rm_by_index_mrsh.c>
#endif /* CONFIG_USERSPACE */
static struct net_if_mcast_addr *ipv4_maddr_find(struct net_if *iface,
bool is_used,
const struct in_addr *addr)
{
struct net_if_ipv4 *ipv4 = iface->config.ip.ipv4;
int i;
if (!ipv4) {
return NULL;
}
for (i = 0; i < NET_IF_MAX_IPV4_MADDR; i++) {
if ((is_used && !ipv4->mcast[i].is_used) ||
(!is_used && ipv4->mcast[i].is_used)) {
continue;
}
if (addr) {
if (!net_ipv4_addr_cmp(&ipv4->mcast[i].address.in_addr,
addr)) {
continue;
}
}
return &ipv4->mcast[i];
}
return NULL;
}
struct net_if_mcast_addr *net_if_ipv4_maddr_add(struct net_if *iface,
const struct in_addr *addr)
{
struct net_if_mcast_addr *maddr = NULL;
k_mutex_lock(&lock, K_FOREVER);
if (net_if_config_ipv4_get(iface, NULL) < 0) {
goto out;
}
if (!net_ipv4_is_addr_mcast(addr)) {
NET_DBG("Address %s is not a multicast address.",
net_sprint_ipv4_addr(addr));
goto out;
}
maddr = ipv4_maddr_find(iface, false, NULL);
if (maddr) {
maddr->is_used = true;
maddr->address.family = AF_INET;
maddr->address.in_addr.s4_addr32[0] = addr->s4_addr32[0];
NET_DBG("interface %p address %s added", iface,
net_sprint_ipv4_addr(addr));
net_mgmt_event_notify_with_info(
NET_EVENT_IPV4_MADDR_ADD, iface,
&maddr->address.in_addr,
sizeof(struct in_addr));
}
out:
k_mutex_unlock(&lock);
return maddr;
}
bool net_if_ipv4_maddr_rm(struct net_if *iface, const struct in_addr *addr)
{
struct net_if_mcast_addr *maddr;
bool ret = false;
k_mutex_lock(&lock, K_FOREVER);
maddr = ipv4_maddr_find(iface, true, addr);
if (maddr) {
maddr->is_used = false;
NET_DBG("interface %p address %s removed",
iface, net_sprint_ipv4_addr(addr));
net_mgmt_event_notify_with_info(
NET_EVENT_IPV4_MADDR_DEL, iface,
&maddr->address.in_addr,
sizeof(struct in_addr));
ret = true;
}
k_mutex_unlock(&lock);
return ret;
}
struct net_if_mcast_addr *net_if_ipv4_maddr_lookup(const struct in_addr *maddr,
struct net_if **ret)
{
struct net_if_mcast_addr *addr = NULL;
k_mutex_lock(&lock, K_FOREVER);
STRUCT_SECTION_FOREACH(net_if, iface) {
if (ret && *ret && iface != *ret) {
continue;
}
addr = ipv4_maddr_find(iface, true, maddr);
if (addr) {
if (ret) {
*ret = iface;
}
goto out;
}
}
out:
k_mutex_unlock(&lock);
return addr;
}
void net_if_ipv4_maddr_leave(struct net_if_mcast_addr *addr)
{
NET_ASSERT(addr);
k_mutex_lock(&lock, K_FOREVER);
addr->is_joined = false;
k_mutex_unlock(&lock);
}
void net_if_ipv4_maddr_join(struct net_if_mcast_addr *addr)
{
NET_ASSERT(addr);
k_mutex_lock(&lock, K_FOREVER);
addr->is_joined = true;
k_mutex_unlock(&lock);
}
static void iface_ipv4_init(int if_count)
{
int i;
if (if_count > ARRAY_SIZE(ipv4_addresses)) {
NET_WARN("You have %zu IPv4 net_if addresses but %d "
"network interfaces", ARRAY_SIZE(ipv4_addresses),
if_count);
NET_WARN("Consider increasing CONFIG_NET_IF_MAX_IPV4_COUNT "
"value.");
}
for (i = 0; i < ARRAY_SIZE(ipv4_addresses); i++) {
ipv4_addresses[i].ipv4.ttl = CONFIG_NET_INITIAL_TTL;
}
}
static void leave_ipv4_mcast_all(struct net_if *iface)
{
struct net_if_ipv4 *ipv4 = iface->config.ip.ipv4;
int i;
if (!ipv4) {
return;
}
for (i = 0; i < NET_IF_MAX_IPV4_MADDR; i++) {
if (!ipv4->mcast[i].is_used ||
!ipv4->mcast[i].is_joined) {
continue;
}
net_ipv4_igmp_leave(iface, &ipv4->mcast[i].address.in_addr);
}
}
#else
#define leave_ipv4_mcast_all(...)
#define iface_ipv4_init(...)
struct net_if_mcast_addr *net_if_ipv4_maddr_lookup(const struct in_addr *addr,
struct net_if **iface)
{
ARG_UNUSED(addr);
ARG_UNUSED(iface);
return NULL;
}
struct net_if_addr *net_if_ipv4_addr_lookup(const struct in_addr *addr,
struct net_if **ret)
{
ARG_UNUSED(addr);
ARG_UNUSED(ret);
return NULL;
}
struct in_addr *net_if_ipv4_get_global_addr(struct net_if *iface,
enum net_addr_state addr_state)
{
ARG_UNUSED(addr_state);
ARG_UNUSED(iface);
return NULL;
}
#endif /* CONFIG_NET_IPV4 */
struct net_if *net_if_select_src_iface(const struct sockaddr *dst)
{
struct net_if *iface = NULL;
if (!dst) {
goto out;
}
k_mutex_lock(&lock, K_FOREVER);
if (IS_ENABLED(CONFIG_NET_IPV6) && dst->sa_family == AF_INET6) {
iface = net_if_ipv6_select_src_iface(&net_sin6(dst)->sin6_addr);
goto out;
}
if (IS_ENABLED(CONFIG_NET_IPV4) && dst->sa_family == AF_INET) {
iface = net_if_ipv4_select_src_iface(&net_sin(dst)->sin_addr);
goto out;
}
out:
k_mutex_unlock(&lock);
if (iface == NULL) {
iface = net_if_get_default();
}
return iface;
}
enum net_verdict net_if_recv_data(struct net_if *iface, struct net_pkt *pkt)
{
if (IS_ENABLED(CONFIG_NET_PROMISCUOUS_MODE) &&
net_if_is_promisc(iface)) {
/* If the packet is not for us and the promiscuous
* mode is enabled, then increase the ref count so
* that net_core.c:processing_data() will not free it.
* The promiscuous mode handler must free the packet
* after it has finished working with it.
*
* If packet is for us, then NET_CONTINUE is returned.
* In this case we must clone the packet, as the packet
* could be manipulated by other part of the stack.
*/
enum net_verdict verdict;
struct net_pkt *new_pkt;
/* This protects pkt so that it will not be freed by L2 recv()
*/
net_pkt_ref(pkt);
verdict = net_if_l2(iface)->recv(iface, pkt);
if (verdict == NET_CONTINUE) {
new_pkt = net_pkt_clone(pkt, K_NO_WAIT);
} else {
new_pkt = net_pkt_ref(pkt);
}
/* L2 has modified the buffer starting point, it is easier
* to re-initialize the cursor rather than updating it.
*/
net_pkt_cursor_init(new_pkt);
if (net_promisc_mode_input(new_pkt) == NET_DROP) {
net_pkt_unref(new_pkt);
}
net_pkt_unref(pkt);
return verdict;
}
return net_if_l2(iface)->recv(iface, pkt);
}
void net_if_register_link_cb(struct net_if_link_cb *link,
net_if_link_callback_t cb)
{
k_mutex_lock(&lock, K_FOREVER);
sys_slist_find_and_remove(&link_callbacks, &link->node);
sys_slist_prepend(&link_callbacks, &link->node);
link->cb = cb;
k_mutex_unlock(&lock);
}
void net_if_unregister_link_cb(struct net_if_link_cb *link)
{
k_mutex_lock(&lock, K_FOREVER);
sys_slist_find_and_remove(&link_callbacks, &link->node);
k_mutex_unlock(&lock);
}
void net_if_call_link_cb(struct net_if *iface, struct net_linkaddr *lladdr,
int status)
{
struct net_if_link_cb *link, *tmp;
k_mutex_lock(&lock, K_FOREVER);
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&link_callbacks, link, tmp, node) {
link->cb(iface, lladdr, status);
}
k_mutex_unlock(&lock);
}
static bool need_calc_checksum(struct net_if *iface, enum ethernet_hw_caps caps)
{
#if defined(CONFIG_NET_L2_ETHERNET)
if (net_if_l2(iface) != &NET_L2_GET_NAME(ETHERNET)) {
return true;
}
return !(net_eth_get_hw_capabilities(iface) & caps);
#else
ARG_UNUSED(iface);
ARG_UNUSED(caps);
return true;
#endif
}
bool net_if_need_calc_tx_checksum(struct net_if *iface)
{
return need_calc_checksum(iface, ETHERNET_HW_TX_CHKSUM_OFFLOAD);
}
bool net_if_need_calc_rx_checksum(struct net_if *iface)
{
return need_calc_checksum(iface, ETHERNET_HW_RX_CHKSUM_OFFLOAD);
}
int net_if_get_by_iface(struct net_if *iface)
{
if (!(iface >= _net_if_list_start && iface < _net_if_list_end)) {
return -1;
}
return (iface - _net_if_list_start) + 1;
}
void net_if_foreach(net_if_cb_t cb, void *user_data)
{
STRUCT_SECTION_FOREACH(net_if, iface) {
cb(iface, user_data);
}
}
int net_if_up(struct net_if *iface)
{
int status = 0;
NET_DBG("iface %p", iface);
k_mutex_lock(&lock, K_FOREVER);
if (net_if_flag_is_set(iface, NET_IF_UP)) {
status = -EALREADY;
goto out;
}
if ((IS_ENABLED(CONFIG_NET_OFFLOAD) &&
net_if_is_ip_offloaded(iface)) ||
(IS_ENABLED(CONFIG_NET_SOCKETS_OFFLOAD) &&
net_if_is_socket_offloaded(iface))) {
net_if_flag_set(iface, NET_IF_UP);
goto notify;
}
/* If the L2 does not support enable just set the flag */
if (!net_if_l2(iface) || !net_if_l2(iface)->enable) {
goto done;
}
/* Notify L2 to enable the interface */
status = net_if_l2(iface)->enable(iface, true);
if (status < 0) {
goto out;
}
done:
/* In many places it's assumed that link address was set with
* net_if_set_link_addr(). Better check that now.
*/
#if defined(CONFIG_NET_L2_CANBUS_RAW)
if (IS_ENABLED(CONFIG_NET_SOCKETS_CAN) &&
(net_if_l2(iface) == &NET_L2_GET_NAME(CANBUS_RAW))) {
/* CAN does not require link address. */
} else
#endif /* CONFIG_NET_L2_CANBUS_RAW */
{
NET_ASSERT(net_if_get_link_addr(iface)->addr != NULL);
}
net_if_flag_set(iface, NET_IF_UP);
/* If the interface is only having point-to-point traffic then we do
* not need to run DAD etc for it.
*/
if (!(l2_flags_get(iface) & NET_L2_POINT_TO_POINT)) {
iface_ipv6_start(iface);
net_ipv4_autoconf_start(iface);
}
notify:
net_mgmt_event_notify(NET_EVENT_IF_UP, iface);
out:
k_mutex_unlock(&lock);
return status;
}
void net_if_carrier_down(struct net_if *iface)
{
NET_DBG("iface %p", iface);
k_mutex_lock(&lock, K_FOREVER);
net_if_flag_clear(iface, NET_IF_UP);
net_ipv4_autoconf_reset(iface);
net_mgmt_event_notify(NET_EVENT_IF_DOWN, iface);
k_mutex_unlock(&lock);
}
int net_if_down(struct net_if *iface)
{
int status = 0;
NET_DBG("iface %p", iface);
k_mutex_lock(&lock, K_FOREVER);
leave_mcast_all(iface);
leave_ipv4_mcast_all(iface);
if (net_if_is_ip_offloaded(iface)) {
goto done;
}
/* If the L2 does not support enable just clear the flag */
if (!net_if_l2(iface) || !net_if_l2(iface)->enable) {
goto done;
}
/* Notify L2 to disable the interface */
status = net_if_l2(iface)->enable(iface, false);
if (status < 0) {
goto out;
}
net_virtual_disable(iface);
done:
net_if_flag_clear(iface, NET_IF_UP);
net_mgmt_event_notify(NET_EVENT_IF_DOWN, iface);
out:
k_mutex_unlock(&lock);
return status;
}
static int promisc_mode_set(struct net_if *iface, bool enable)
{
enum net_l2_flags l2_flags = 0;
NET_ASSERT(iface);
l2_flags = l2_flags_get(iface);
if (!(l2_flags & NET_L2_PROMISC_MODE)) {
return -ENOTSUP;
}
#if defined(CONFIG_NET_L2_ETHERNET)
if (net_if_l2(iface) == &NET_L2_GET_NAME(ETHERNET)) {
int ret = net_eth_promisc_mode(iface, enable);
if (ret < 0) {
return ret;
}
}
#else
ARG_UNUSED(enable);
return -ENOTSUP;
#endif
return 0;
}
int net_if_set_promisc(struct net_if *iface)
{
int ret;
k_mutex_lock(&lock, K_FOREVER);
ret = promisc_mode_set(iface, true);
if (ret < 0) {
goto out;
}
ret = net_if_flag_test_and_set(iface, NET_IF_PROMISC);
if (ret) {
ret = -EALREADY;
goto out;
}
out:
k_mutex_unlock(&lock);
return ret;
}
void net_if_unset_promisc(struct net_if *iface)
{
int ret;
k_mutex_lock(&lock, K_FOREVER);
ret = promisc_mode_set(iface, false);
if (ret < 0) {
goto out;
}
net_if_flag_clear(iface, NET_IF_PROMISC);
out:
k_mutex_unlock(&lock);
}
bool net_if_is_promisc(struct net_if *iface)
{
NET_ASSERT(iface);
return net_if_flag_is_set(iface, NET_IF_PROMISC);
}
#ifdef CONFIG_NET_POWER_MANAGEMENT
int net_if_suspend(struct net_if *iface)
{
int ret = 0;
k_mutex_lock(&lock, K_FOREVER);
if (net_if_are_pending_tx_packets(iface)) {
ret = -EBUSY;
goto out;
}
if (net_if_flag_test_and_set(iface, NET_IF_SUSPENDED)) {
ret = -EALREADY;
goto out;
}
net_stats_add_suspend_start_time(iface, k_cycle_get_32());
out:
k_mutex_unlock(&lock);
return ret;
}
int net_if_resume(struct net_if *iface)
{
int ret = 0;
k_mutex_lock(&lock, K_FOREVER);
if (!net_if_flag_is_set(iface, NET_IF_SUSPENDED)) {
ret = -EALREADY;
goto out;
}
net_if_flag_clear(iface, NET_IF_SUSPENDED);
net_stats_add_suspend_end_time(iface, k_cycle_get_32());
out:
k_mutex_unlock(&lock);
return ret;
}
bool net_if_is_suspended(struct net_if *iface)
{
return net_if_flag_is_set(iface, NET_IF_SUSPENDED);
}
#endif /* CONFIG_NET_POWER_MANAGEMENT */
#if defined(CONFIG_NET_PKT_TIMESTAMP_THREAD)
static void net_tx_ts_thread(void)
{
struct net_pkt *pkt;
NET_DBG("Starting TX timestamp callback thread");
while (1) {
pkt = k_fifo_get(&tx_ts_queue, K_FOREVER);
if (pkt) {
net_if_call_timestamp_cb(pkt);
}
}
}
void net_if_register_timestamp_cb(struct net_if_timestamp_cb *handle,
struct net_pkt *pkt,
struct net_if *iface,
net_if_timestamp_callback_t cb)
{
k_mutex_lock(&lock, K_FOREVER);
sys_slist_find_and_remove(&timestamp_callbacks, &handle->node);
sys_slist_prepend(&timestamp_callbacks, &handle->node);
handle->iface = iface;
handle->cb = cb;
handle->pkt = pkt;
k_mutex_unlock(&lock);
}
void net_if_unregister_timestamp_cb(struct net_if_timestamp_cb *handle)
{
k_mutex_lock(&lock, K_FOREVER);
sys_slist_find_and_remove(&timestamp_callbacks, &handle->node);
k_mutex_unlock(&lock);
}
void net_if_call_timestamp_cb(struct net_pkt *pkt)
{
sys_snode_t *sn, *sns;
k_mutex_lock(&lock, K_FOREVER);
SYS_SLIST_FOR_EACH_NODE_SAFE(&timestamp_callbacks, sn, sns) {
struct net_if_timestamp_cb *handle =
CONTAINER_OF(sn, struct net_if_timestamp_cb, node);
if (((handle->iface == NULL) ||
(handle->iface == net_pkt_iface(pkt))) &&
(handle->pkt == NULL || handle->pkt == pkt)) {
handle->cb(pkt);
}
}
k_mutex_unlock(&lock);
}
void net_if_add_tx_timestamp(struct net_pkt *pkt)
{
k_fifo_put(&tx_ts_queue, pkt);
}
#endif /* CONFIG_NET_PKT_TIMESTAMP_THREAD */
void net_if_init(void)
{
int if_count = 0;
NET_DBG("");
k_mutex_lock(&lock, K_FOREVER);
net_tc_tx_init();
STRUCT_SECTION_FOREACH(net_if, iface) {
init_iface(iface);
if_count++;
}
if (if_count == 0) {
NET_ERR("There is no network interface to work with!");
goto out;
}
iface_ipv6_init(if_count);
iface_ipv4_init(if_count);
iface_router_init();
#if defined(CONFIG_NET_PKT_TIMESTAMP_THREAD)
k_thread_create(&tx_thread_ts, tx_ts_stack,
K_KERNEL_STACK_SIZEOF(tx_ts_stack),
(k_thread_entry_t)net_tx_ts_thread,
NULL, NULL, NULL, K_PRIO_COOP(1), 0, K_NO_WAIT);
k_thread_name_set(&tx_thread_ts, "tx_tstamp");
#endif /* CONFIG_NET_PKT_TIMESTAMP_THREAD */
#if defined(CONFIG_NET_VLAN)
/* Make sure that we do not have too many network interfaces
* compared to the number of VLAN interfaces.
*/
if_count = 0;
STRUCT_SECTION_FOREACH(net_if, iface) {
if (net_if_l2(iface) == &NET_L2_GET_NAME(ETHERNET)) {
if_count++;
}
}
if (if_count > CONFIG_NET_VLAN_COUNT) {
NET_WARN("You have configured only %d VLAN interfaces"
" but you have %d network interfaces.",
CONFIG_NET_VLAN_COUNT, if_count);
}
#endif
out:
k_mutex_unlock(&lock);
}
void net_if_post_init(void)
{
NET_DBG("");
/* After TX is running, attempt to bring the interface up */
STRUCT_SECTION_FOREACH(net_if, iface) {
if (!net_if_flag_is_set(iface, NET_IF_NO_AUTO_START)) {
net_if_up(iface);
}
}
}