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c47b1e2c5b
POSIX leaves the signedness of time_t and clock_t unspecified, but
mainstream implementations (Linux glibc/musl, the BSDs, macOS, RTEMS,
Zephyr's POSIX layer, Windows _time64) expose time_t as signed 64-bit.
NuttX has historically used uint64_t only because it was tied to the
CONFIG_SYSTEM_TIME64 knob; with that gone, switch:
time_t : uint64_t -> int64_t
clock_t : uint64_t -> int64_t
CLOCK_MAX: UINT64_MAX -> INT64_MAX
This lets (time_t)-1 sentinels, negative tick deltas, and host-side
headers behave as on every other POSIX system without source churn.
Headers updated:
- include/sys/types.h, include/limits.h, include/nuttx/clock.h
- include/nuttx/fs/hostfs.h (nuttx_time_t alias)
- include/nuttx/{mqueue.h,wdog.h,wqueue.h,timers/clkcnt.h}
Because clock_t is now signed 64-bit, the NuttX-internal sclock_t
alias becomes redundant: every sclock_t/SCLOCK_MAX use is folded
back to clock_t/CLOCK_MAX (notably in sched/wdog, sched/mqueue,
sched/sched, sched/clock, sched/timer, libs/libc/time, fs/vfs and
the drivers/arch consumers below).
Tick/period constants (NSEC_PER_SEC, USEC_PER_SEC, MSEC_PER_SEC,
SEC_PER_MIN, ...) in include/nuttx/clock.h are retyped from "long"
literals to INT64_C(...) so that 64-bit arithmetic no longer
depends on the host's long width.
Strip now-redundant (time_t)/(clock_t)/(unsigned long) casts and
unsigned-only branches across the tree:
- arch RTC / oneshot / tickless lowerhalfs:
arm: cxd56xx, efm32, imxrt, lc823450, max326xx, sam34, sama5,
samd5e5, samv7, stm32, stm32f7, stm32h7, stm32l4, stm32wb,
xmc4
mips: pic32mz sparc: bm3803 x86_64: intel64
risc-v/xtensa: espressif (esp_i2c[_slave], esp_rtc,
esp32c3{_i2c,_rtc,_wifi_adapter}, esp32{,s2,s3}_*),
mpfs_perf
- drivers: audio/tone, input/aw86225, power/pm/{activity,
stability}_governor, rpmsg/rpmsg_ping,
timers/{ds3231,mcp794xx,pcf85263,rx8010},
wireless/ieee80211/bcm43xxx, wireless/spirit/spirit_spi
- core: fs/vfs/{fs_poll,fs_timerfd}, mm/iob/iob_alloc,
libs/libc/{netdb/lib_dnscache,time/{lib_calendar2utc,
lib_time}}, net/icmp/icmp_pmtu, net/icmpv6/icmpv6_pmtu,
net/ipfrag, net/tcp/{tcp.h,tcp_timer},
net/utils/net_snoop, net/mld/mld_query (drop the now-dead
mld_mrc2mrd helper since signed math handles it directly),
sched/clock/{clock,clock_initialize},
sched/sched/{sched_profil,sched_setparam,sched_setscheduler},
sched/pthread/pthread_create,
sched/wdog/{wd_gettime,wd_start,wdog.h},
sched/timer/timer_gettime, sched/mqueue/*
Flip the few in-tree printf format strings that assumed an
unsigned 64-bit tv_sec:
* drivers/rpmsg/rpmsg_ping.c PRIu64 -> PRId64
* arch/xtensa/src/esp32{,s2,s3}/esp32*_oneshot_lowerhalf.c
PRIu32 (already wrong) -> PRId64
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
119 lines
3.6 KiB
C
119 lines
3.6 KiB
C
/****************************************************************************
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* net/icmpv6/icmpv6_pmtu.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/clock.h>
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#include "icmpv6/icmpv6.h"
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static struct icmpv6_pmtu_entry
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g_icmpv6_pmtu_entry[CONFIG_NET_ICMPv6_PMTU_ENTRIES];
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: icmpv6_find_pmtu_entry
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*
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* Description:
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* Search for a ipv6 pmtu entry
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*
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* Parameters:
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* destipaddr the IPv6 address of the destination
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*
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* Return:
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* not null is success; null is failure
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****************************************************************************/
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FAR struct icmpv6_pmtu_entry *
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icmpv6_find_pmtu_entry(net_ipv6addr_t destipaddr)
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{
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clock_t now = clock_systime_ticks();
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int i;
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for (i = 0; i < CONFIG_NET_ICMPv6_PMTU_ENTRIES; i++)
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{
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if (g_icmpv6_pmtu_entry[i].pmtu == 0)
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{
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continue;
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}
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if (net_ipv6addr_cmp(destipaddr, g_icmpv6_pmtu_entry[i].daddr))
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{
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g_icmpv6_pmtu_entry[i].time = now;
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return &g_icmpv6_pmtu_entry[i];
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}
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}
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return NULL;
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}
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/****************************************************************************
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* Name: icmpv6_add_pmtu_entry
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*
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* Description:
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* Create a new ipv6 destination cache entry. If no unused entry is found,
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* will recycle oldest entry
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*
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* Parameters:
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* destipaddr the IPv6 address of the destination
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* mtu MTU
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*
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* Return:
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* void
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****************************************************************************/
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void icmpv6_add_pmtu_entry(net_ipv6addr_t destipaddr, int mtu)
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{
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clock_t now = clock_systime_ticks();
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int j = 0;
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int i;
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for (i = 0; i < CONFIG_NET_ICMPv6_PMTU_ENTRIES; i++)
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{
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if (g_icmpv6_pmtu_entry[i].pmtu == 0 ||
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now - g_icmpv6_pmtu_entry[i].time >=
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SEC2TICK(CONFIG_NET_ICMPv6_PMTU_TIMEOUT * 60))
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{
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j = i;
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break;
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}
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if (g_icmpv6_pmtu_entry[i].time -
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g_icmpv6_pmtu_entry[j].time < 0)
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{
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j = i;
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}
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}
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net_ipv6addr_copy(g_icmpv6_pmtu_entry[j].daddr, destipaddr);
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g_icmpv6_pmtu_entry[j].pmtu = mtu;
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g_icmpv6_pmtu_entry[j].time = now;
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}
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