10000 gnrc/sixlowpan: migrate to ztimer_msec by jue89 · Pull Request #19067 · RIOT-OS/RIOT · GitHub
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gnrc/sixlowpan: migrate to ztimer_msec #19067

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gnrc/sixlowpan: migrate to ztimer_msec #19067

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c8c7887
net/gnrc/sixlowpan/ctx: always fetch current minute from ztimer_msec
jue89 Dec 20, 2022
5a0cf39
net/gnrc/sixlowpan/frag: use ztimer_msec for timestamping
jue89 Dec 20, 2022
3d95e07
net/gnrc/siwlowpan: acquire ztimer_msec clock if used for timestamping
jue89 Dec 20, 2022
70488a2
test/gnrc_sixlowpan_frag: relax receive timeout
jue89 Dec 20, 2022
bc813ea
net/gnrc/sixlowpan/frag: remove packets that reached the timeout exactly
jue89 Dec 21, 2022
c0384b8
fixup! net/gnrc/sixlowpan/frag: use ztimer_msec for timestamping
jue89 Dec 21, 2022
94349f4
fixup! fixup! net/gnrc/sixlowpan/frag: use ztimer_msec for timestamping
jue89 Dec 21, 2022
66a5b38
fixup! net/gnrc/sixlowpan/ctx: always fetch current minute from ztime…
jue89 Dec 21, 2022
4580327
fixup! fixup! fixup! net/gnrc/sixlowpan/frag: use ztimer_msec for tim… 8000
jue89 Dec 21, 2022
1ddab5a
fixup! fixup! fixup! fixup! net/gnrc/sixlowpan/frag: use ztimer_msec …
jue89 Dec 21, 2022
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61 changes: 57 additions & 4 deletions sys/include/net/gnrc/sixlowpan/config.h
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Original file line number Diff line number Diff line change
Expand Up @@ -81,12 +81,29 @@ extern "C" {
#endif

/**
* @brief Timeout for reassembly buffer entries in microseconds
* @brief Timeout for reassembly buffer entries in milliseconds
*
* @note Only applicable with
* [gnrc_sixlowpan_frag_rb](@ref net_gnrc_sixlowpan_frag_rb) module
*/
#ifndef CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS
#ifndef CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US
#define CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS (3U)
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@kfessel kfessel Mar 20, 2023 •
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Suggested change
#define CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS (3U)
#define CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS (3000U)

old default was "(3U * US_PER_SEC) " -> 3000 ms or 3 seconds

#else
#define CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS (CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US / US_PER_SEC)
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Suggested change
#define CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS (CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US / US_PER_SEC)
#define CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS (CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US / US_PER_MS)

#endif
#endif

/**
* @brief Timeout for reassembly buffer entries in microseconds
*
* @note Only applicable with
* [gnrc_sixlowpan_frag_rb](@ref net_gnrc_sixlowpan_frag_rb) module
*
* @deprecated Use @ref CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS instead.
* Will be removed after 2023.01 release.
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The usual deprecation cycle is two releases, since the 2023.01 release is just up ahead, I think, 2023.07 is the better release to deprecate. This way users still have some time to adjust ;-).

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Ping?

*/
#ifdef DOXYGEN
#define CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US (3U * US_PER_SEC)
#endif

Expand All @@ -99,7 +116,7 @@ extern "C" {
* When not set, it will cause the reassembly buffer to override the oldest
* entry when a fragment for a new datagram is received. When set, only the
* oldest entry that is older than @ref
* CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US will be overwritten (they will
* CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS will be overwritten (they will
* still timeout normally if reassembly buffer is not full).
*/
#ifdef DOXYGEN
Expand All @@ -112,13 +129,30 @@ extern "C" {
* @note Only applicable with
* [gnrc_sixlowpan_frag_rb](@ref net_gnrc_sixlowpan_frag_rb) module
*
* @deprecated Use @ref CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS instead.
* Will be removed after 2023.01 release.
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Same here.

*/
#ifdef DOXYGEN
#define CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER (0U)
#endif

/**
* @brief Deletion timer for reassembly buffer entries in milliseconds
*
* @note Only applicable with
* [gnrc_sixlowpan_frag_rb](@ref net_gnrc_sixlowpan_frag_rb) module
*
* Time to pass between completion of a datagram and the deletion of its
* reassembly buffer entry. If this value is 0, the entry is dropped
* immediately. Use this value to prevent re-creation of a reassembly buffer
* entry on late arriving link-layer duplicates.
*/
#ifndef CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS
#ifndef CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER
#define CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER (0U)
#define CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS (0U)
#else
#define CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS (CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER / US_PER_MS)
#endif
#endif

/**
Expand Down Expand Up @@ -154,14 +188,33 @@ extern "C" {
#endif /* CONFIG_GNRC_SIXLOWPAN_FRAG_VRB_SIZE */

/**
* @brief Timeout for a VRB entry in microseconds
* @brief Timeout for a VRB entry in milliseconds
*
* @see https://tools.ietf.org/html/draft-ietf-lwig-6lowpan-virtual-reassembly-01
*
* @note Only applicable with
* [gnrc_sixlowpan_frag_vrb](@ref net_gnrc_sixlowpan_frag_vrb) module.
*/
#ifndef CONFIG_GNRC_SIXLOWPAN_FRAG_VRB_TIMEOUT_MS
#ifndef CONFIG_GNRC_SIXLOWPAN_FRAG_VRB_TIMEOUT_US
#define CONFIG_GNRC_SIXLOWPAN_FRAG_VRB_TIMEOUT_MS (CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS)
#else
#define CONFIG_GNRC_SIXLOWPAN_FRAG_VRB_TIMEOUT_MS (CONFIG_GNRC_SIXLOWPAN_FRAG_VRB_TIMEOUT_US / US_PER_MS)
#endif
#endif /* CONFIG_GNRC_SIXLOWPAN_FRAG_VRB_TIMEOUT_MS */

/**
* @brief Timeout for a VRB entry in microseconds
*
* @see https://tools.ietf.org/html/draft-ietf-lwig-6lowpan-virtual 1E79 -reassembly-01
*
* @note Only applicable with
* [gnrc_sixlowpan_frag_vrb](@ref net_gnrc_sixlowpan_frag_vrb) module.
*
* @deprecated Use @ref CONFIG_GNRC_SIXLOWPAN_FRAG_VRB_TIMEOUT_MS instead.
* Will be removed after 2023.01 release.
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And here.

*/
#ifdef DOXYGEN
#define CONFIG_GNRC_SIXLOWPAN_FRAG_VRB_TIMEOUT_US (CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US)
#endif /* CONFIG_GNRC_SIXLOWPAN_FRAG_VRB_TIMEOUT_US */

Expand Down
2 changes: 1 addition & 1 deletion sys/include/net/gnrc/sixlowpan/frag/rb.h
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Original file line number Diff line number Diff line change
Expand Up @@ -85,7 +85,7 @@ typedef struct {
* @brief The number of bytes currently received of the complete datagram
*/
uint16_t current_size;
uint32_t arrival; /**< time in microseconds of arrival of
uint32_t arrival; /**< time in milliseconds of arrival of
* last received fragment */
} gnrc_sixlowpan_frag_rb_base_t;

Expand Down
3 changes: 1 addition & 2 deletions sys/include/net/gnrc/sixlowpan/frag/sfr_types.h
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,6 @@
#include "evtimer_msg.h"
#include "modules.h"
#include "msg.h"
#include "xtimer.h"

#ifdef __cplusplus
extern "C" {
Expand All @@ -52,7 +51,7 @@ typedef struct gnrc_sixlowpan_frag_sfr_fb {
* @brief Acknowledgment request timeout event
*/
evtimer_msg_event_t arq_timeout_event;
uint32_t arq_timeout; /**< Time in microseconds the sender should
uint32_t arq_timeout; /**< Time in milliseconds the sender should
* wait for an RFRAG Acknowledgment */
uint8_t cur_seq; /**< Sequence number for next fragment */
uint8_t frags_sent; /**< Number of fragments sent */
10000 Expand Down
8 changes: 3 additions & 5 deletions sys/net/gnrc/Makefile.dep
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Original file line number Diff line number Diff line change
Expand Up @@ -228,7 +228,7 @@ ifneq (,$(filter gnrc_sixlowpan_frag_minfwd,$(USEMODULE)))
endif

ifneq (,$(filter gnrc_sixlowpan_frag_rb,$(USEMODULE)))
USEMODULE += xtimer
USEMODULE += ztimer_msec
endif

ifneq (,$(filter gnrc_sixlowpan_frag_sfr,$(USEMODULE)))
Expand All @@ -237,7 +237,7 @@ ifneq (,$(filter gnrc_sixlowpan_frag_sfr,$(USEMODULE)))
USEMODULE += gnrc_sixlowpan_frag_vrb
USEMODULE += gnrc_sixlowpan_frag_rb
USEMODULE += evtimer
USEMODULE += xtimer
USEMODULE += ztimer_msec
endif

ifneq (,$(filter gnrc_sixlowpan_frag_sfr_congure_%,$(USEMODULE)))
Expand Down Expand Up @@ -287,9 +287,7 @@ endif

ifneq (,$(filter gnrc_sixlowpan_ctx,$(USEMODULE)))
USEMODULE += ipv6_addr
ifeq (,$(filter ztimer_msec,$(USEMODULE)))
USEMODULE += xtimer
endif
USEMODULE += ztimer_msec
endif

ifneq (,$(filter gnrc_ipv6_default,$(USEMODULE)))
Expand Down
8 changes: 0 additions & 8 deletions sys/net/gnrc/network_layer/sixlowpan/ctx/gnrc_sixlowpan_ctx.c
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Original file line number Diff line number Diff line change
Expand Up @@ -17,12 +17,8 @@

#include "mutex.h"
#include "net/gnrc/sixlowpan/ctx.h"
#if IS_USED(MODULE_ZTIMER_MSEC)
#include "ztimer.h"
#include "timex.h"
#else
#include "xtimer.h"
#endif

#define ENABLE_DEBUG 0
#include "debug.h"
Expand Down Expand Up @@ -136,11 +132,7 @@ gnrc_sixlowpan_ctx_t *gnrc_sixlowpan_ctx_update(uint8_t id, const ipv6_addr_t *p

static uint32_t _current_minute(void)
{
#if IS_USED(MODULE_ZTIMER_MSEC)
return ztimer_now(ZTIMER_MSEC) / (MS_PER_SEC * SEC_PER_MIN);
#else
return xtimer_now_usec() / (US_PER_SEC * SEC_PER_MIN);
#endif
}

static void _update_lifetime(uint8_t id)
Expand Down
12 changes: 6 additions & 6 deletions sys/net/gnrc/network_layer/sixlowpan/frag/rb/Kconfig
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Expand Up @@ -16,21 +16,21 @@ config GNRC_SIXLOWPAN_FRAG_RBUF_SIZE
int "Size of the reassembly buffer"
default 4

config GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US
int "Timeout for reassembly buffer entries in microseconds"
default 3000000
config GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS
int "Timeout for reassembly buffer entries in milliseconds"
default 3000

config GNRC_SIXLOWPAN_FRAG_RBUF_DO_NOT_OVERRIDE
bool "Do not override oldest datagram when reassembly buffer is full"
help
When not set, it will cause the reassembly buffer to override the oldest
entry when a fragment for a new datagram is received. When set, only the
oldest entry that is older than @ref
CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US will be overwritten (they
CONFIGMGNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS will be overwritten (they
will still timeout normally if reassembly buffer is not full).

config GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER
int "Deletion timer for reassembly buffer entries in microseconds"
config GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS
int "Deletion timer for reassembly buffer entries in milliseconds"
default 0
help
Time to pass between completion of a datagram and the deletion
Expand Down
45 changes: 23 additions & 22 deletions sys/net/gnrc/network_layer/sixlowpan/frag/rb/gnrc_sixlowpan_frag_rb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@
#include "net/sixlowpan.h"
#include "net/sixlowpan/sfr.h"
#include "thread.h"
#include "xtimer.h"
#include "ztimer.h"
#include "utlist.h"

#include "net/gnrc/sixlowpan/frag/rb.h"
Expand Down Expand Up @@ -65,7 +65,7 @@ static gnrc_sixlowpan_frag_rb_t rbuf[CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_SIZE];

static char l2addr_str[3 * IEEE802154_LONG_ADDRESS_LEN];

static xtimer_t _gc_timer;
static ztimer_t _gc_timer;
static msg_t _gc_timer_msg = { .type = GNRC_SIXLOWPAN_FRAG_RB_GC_MSG };

/* ------------------------------------
Expand Down Expand Up @@ -554,7 +554,7 @@ static bool _rbuf_update_ints(gnrc_sixlowpan_frag_rb_base_t *entry,

static void _gc_pkt(gnrc_sixlowpan_frag_rb_t *rbuf)
{
#if CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER > 0
#if CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS > 0
if (rbuf->super.current_size == 0) {
/* packet is scheduled for deletion, but was complete, i.e. pkt is
* already handed up to other layer, i.e. no need to release */
Expand All @@ -566,14 +566,14 @@ static void _gc_pkt(gnrc_sixlowpan_frag_rb_t *rbuf)

void gnrc_sixlowpan_frag_rb_gc(void)
{
uint32_t now_usec = xtimer_now_usec();
uint32_t now_msec = ztimer_now(ZTIMER_MSEC);
unsigned int i;

for (i = 0; i < CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_SIZE; i++) {
/* since pkt occupies pktbuf, aggressivly collect garbage */
if (!gnrc_sixlowpan_frag_rb_entry_empty(&rbuf[i]) &&
((now_usec - rbuf[i].super.arrival) >
CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US)) {
((now_msec - rbuf[i].super.arrival) >=
CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS)) {
DEBUG("6lo rfrag: entry (%s, ",
gnrc_netif_addr_to_str(rbuf[i].super.src,
rbuf[i].super.src_len,
Expand All @@ -595,7 +595,8 @@ void gnrc_sixlowpan_frag_rb_gc(void)

static inline void _set_rbuf_timeout(void)
{
xtimer_set_msg(&_gc_timer, CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US,
ztimer_set_msg(ZTIMER_MSEC, &_gc_timer,
CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS,
&_gc_timer_msg, thread_getpid());
}

Expand All @@ -605,7 +606,7 @@ static int _rbuf_get(const void *src, size_t src_len,
unsigned page)
{
gnrc_sixlowpan_frag_rb_t *res = NULL, *oldest = NULL;
uint32_t now_usec = xtimer_now_usec();
uint32_t now_msec = ztimer_now(ZTIMER_MSEC);

for (unsigned int i = 0; i < CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_SIZE; i++) {
/* check first if entry already available */
Expand Down Expand Up @@ -637,7 +638,7 @@ static int _rbuf_get(const void *src, size_t src_len,
return -1;
}
#endif
rbuf[i].super.arrival = now_usec;
rbuf[i].super.arrival = now_msec;
_set_rbuf_timeout();
return i;
}
Expand All @@ -648,7 +649,7 @@ static int _rbuf_get(const void *src, size_t src_len,
}

/* remember oldest slot */
/* note that xtimer_now will overflow in ~1.2 hours */
/* note that ztimer_now may overflow */
if ((oldest == NULL) ||
(oldest->super.arrival - rbuf[i].super.arrival < UINT32_MAX / 2)) {
oldest = &(rbuf[i]);
Expand All @@ -662,8 +663,8 @@ static int _rbuf_get(const void *src, size_t src_len,
* oldest could have been picked as res) */
assert(!gnrc_sixlowpan_frag_rb_entry_empty(oldest));
if (!IS_ACTIVE(CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DO_NOT_OVERRIDE) ||
((now_usec - oldest->super.arrival) >
CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US)) {
((now_msec - oldest->super.arrival) >=
CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS)) {
DEBUG("6lo rfrag: reassembly buffer full, remove oldest entry\n");
gnrc_pktbuf_release(oldest->pkt);
gnrc_sixlowpan_frag_rb_remove(oldest);
Expand Down Expand Up @@ -722,7 +723,7 @@ static int _rbuf_get(const void *src, size_t src_len,
memset(res->pkt->data, 0, sizeof(uint64_t));
}
res->super.datagram_size = size;
res->super.arrival = now_usec;
res->super.arrival = now_msec;
memcpy(res->super.src, src, src_len);
memcpy(res->super.dst, dst, dst_len);
res->super.src_len = src_len;
Expand Down Expand Up @@ -750,7 +751,7 @@ static int _rbuf_get(const void *src, size_t src_len,
#ifdef TEST_SUITES
void gnrc_sixlowpan_frag_rb_reset(void)
{
xtimer_remove(&_gc_timer);
ztimer_remove(ZTIMER_MSEC, &_gc_timer);
memset(rbuf_int, 0, sizeof(rbuf_int));
for (unsigned int i = 0; i < CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_SIZE; i++) {
if ((rbuf[i].pkt != NULL) &&
Expand Down Expand Up @@ -782,21 +783,21 @@ void gnrc_sixlowpan_frag_rb_base_rm(gnrc_sixlowpan_frag_rb_base_t *entry)

static void _tmp_rm(gnrc_sixlowpan_frag_rb_t *rbuf)
{
#if CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER > 0U
#if CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS > 0U
/* use garbage-collection to leave the entry for at least
* CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER in the reassembly buffer by
* CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS in the reassembly buffer by
* setting the arrival time to
* (CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US - CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER)
* (CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS - CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS)
* microseconds in the past */
rbuf->super.arrival = xtimer_now_usec() -
(CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_US -
CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER);
rbuf->super.arrival = ztimer_now(ZTIMER_MSEC) -
(CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_TIMEOUT_MS -
CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS);
/* reset current size to prevent late duplicates to trigger another
* dispatch */
rbuf->super.current_size = 0;
#else /* CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER == 0U */
#else /* CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS == 0U */
gnrc_sixlowpan_frag_rb_remove(rbuf);
#endif /* CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER */
#endif /* CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_DEL_TIMER_MS */
}

#if IS_USED(MODULE_GNRC_SIXLOWPAN_FRAG_STATS)
Expand Down
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