239 Commits

Author SHA1 Message Date
Xiang Xiao c47b1e2c5b !sys/types.h: change time_t and clock_t to int64_t to align with other OSes
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>
2026-05-19 16:21:28 +08:00
zhanghongyu 0c7f8204fd net/icmp: use break instead of return in icmp_findconn
Replace return with break inside the loop in icmp_findconn() to
ensure any post-loop cleanup logic is properly executed before
returning.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2026-04-13 08:46:57 -03:00
Piyush Patle 0dccc8ba21 include/debug.h: Move to include/nuttx/debug.h
debug.h is a NuttX-specific, non-POSIX header. Placing it in the
top-level include/ directory creates naming conflicts with external
projects that define their own debug.h.
This commit moves the canonical header to include/nuttx/debug.h,
following the NuttX convention for non-POSIX/non-standard headers,
and updates all in-tree references.

A backward-compatibility shim is left at include/debug.h that
emits a deprecation #warning and re-includes <nuttx/debug.h>,
allowing out-of-tree code to continue building while migrating.

Signed-off-by: Piyush Patle <piyushpatle228@gmail.com>
2026-04-07 07:50:06 -03:00
zhanghongyu d5d6b65213 Revert "net: limit TCP and UDP send/recv buffer usage with throttled IOB"
This reverts commit fa652f9c24.

When testing iperf on boards such as ESP32-C6, ESP32-C3, and ESP32,
blocking issues are encountered, so the patch is reverted.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2026-01-23 14:40:06 -03:00
zhanghongyu fa652f9c24 net: limit TCP and UDP send/recv buffer usage with throttled IOB
The main content of this submission is to limit both the TX/RX buffers
of TCP/UDP to throttled IOBs, avoiding impacts on the sending and
receiving of control-type messages.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2026-01-21 20:06:47 +08:00
daichuan 32ffc69bdd net/icmp: Fix devif_loopback dead loop when unrecognized ICMP packet received
When an unrecognized ICMP (type=3, code=2) packet is received, the ICMP flow does not set dev->d_len to 0, causing a devif_loopback dead loop.

Therefore, in ICMP input processing, when an ICMP_DEST_UNREACHABLE message is received, if it is not ICMP_FRAG_NEEDED code, jump to typeerr for error handling.

Signed-off-by: daichuan <daichuan@xiaomi.com>
2026-01-20 06:56:27 +08:00
guoshichao 57637e5927 net: make the sendmsg param type consistent with posix specification
To ensure consistency, in all places where the "sendmsg" function is used
either directly or indirectly, the type of the "struct msghdr *msg" parameter
needs to be modified to "const struct msghdr *msg".

Signed-off-by: guoshichao <guoshichao@xiaomi.com>
2026-01-16 21:11:39 +08:00
zhanghongyu 8f41613374 net: replace net_sem*wait with conn_dev_sem*wait to simplify code logic
optimize the current code format according to the previous net_xxx_wait
implementation to reduce multiple calls of similar code

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2026-01-02 07:48:06 -03:00
zhanghongyu c481374fb8 devif_poll: only call the corresponding xxx_poll when there is data to be sent
reduce the execution consumption of irrelevant code

testing the TX rates of TCP and UDP based on the Infineon board can
increase them by 13%.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2026-01-02 00:04:16 +08:00
zhanghongyu a0b847bf1b net/devif_callback: change flags type from uint16_t to uint32_t
increase the size of the flag to prepare for precise xxx_POLL.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2026-01-02 00:04:16 +08:00
zhanghongyu d377f6b788 net: use netdev_lock to protect netdev_txnotify_dev
since the type of sconn lock is rmutex, there is no need to release
sconn lock before TX

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2026-01-02 00:04:16 +08:00
wenquan1 dfaed9b855 net/icmp: Support icmp timestamp request
When received a icmp timestamp request, send a icmp timestamp reply.

Signed-off-by: wenquan1 <wenquan1@xiaomi.com>
2025-12-30 21:05:46 +08:00
gaohedong e1e6d8821e net/icmp: check src ip for icmp request message
Check src ip for icmp request message. Drop the request message if src ip is broadcast/multicast.

Signed-off-by: gaohedong <gaohedong@xiaomi.com>
2025-12-29 19:18:11 +08:00
gaohedong 7e6138f258 net/ioctl: add a socket interface for ioctl
Add a socket family for ioctl.

Signed-off-by: gaohedong <gaohedong@xiaomi.com>
2025-12-29 14:38:15 +08:00
zhanghongyu 0900b21217 net: change conn lock from mutex to rmutex
Build Documentation / build-html (push) Has been cancelled
UDP and PKT will hold the dev lock and conn lock when calling back the
protocol stack from the network dirver. At this time, if the poll_notify
notifies usrsock_server and executes poll_teardown, a conn double lock
will appear. so we changed the lock to a recursive lock

sched_dumpstack
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/Libs/libc/sched/sched_dumpstack.c:71
__assert
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/libs/libc/assert/lib_assert.c:49
nxsem_wait_slow
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/sched/semaphore/sem_wait.c:102 (discriminator 1)
nxmutex_lock
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/include/nuttx/mutex.h:514
udp_pollteardown
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/net/udp/udp_netpoll.c:278
usrsock_rpmsg_poll_setup
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/drivers/usrsock/usrsock_rpmsg_server.c:1232
usrsock_rpmsg_poll_cb
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/drivers/usrsock/usrsock_rpmsg_server.c:1299
poll_notify
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/fs/vfs/fs_poll.c:296
udp_poll_eventhandler
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/net/udp/udp_netpoll.c:105
devif_conn_event
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/net/devif/devif_callback.c:481
udp_callback
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/net/udp/udp_callback.c:324
udp_input_conn
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/net/udp/udp_input.c:150
ipv4_in
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/net/devif/ipv4_input.c:425
ipv4_input
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/net/devif/ipv4_input.c:533
tun_net_receive_tun
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/drivers/net/tun.c:574
tun_net_receive_tun
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/drivers/net/tun.c:574
file_writev_compat
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/fs/vfs/fs_write.c:89
rpmsgdev_write_handler
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/drivers/misc/rpmsgdev_server.c:354
rpmsg_virtio_process_rx_buffer
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/drivers/rpmsg/rpmsg_virtio.c:256
rpmsg_virtio_rx_worker
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/drivers/rpmsg/rpmsg_virtio.c:291
work_dispatch
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/sched/wqueue/kwork_thread.c:233
work_thread
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/sched/wqueue/kwork_thread.c:293
nxtask_start
/home/work/ssd1/workspace/MiRTOS-062-dev-system-CI/nuttx/sched/task/task_start.c:99

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2025-12-29 09:42:18 +08:00
zhanghongyu 1d91a15820 net/icmp: replace net_lock with conn_lock and conn_lock_dev
Protect icmp resources through netdev_lock, conn_lock, and icmp_list_lock

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2025-12-29 09:42:18 +08:00
zhanghongyu 908596dde3 net/bufpool: fix typo
A previous spelling mistake has been detected. fix it

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2025-12-25 08:33:13 -03:00
gaohedong 07372c12ec net/icmp: fix icmp checksum bug
Build Documentation / build-html (push) Has been cancelled
Use the new cheksum interface to avoid checksum errors caused by IoB discontinuity

Signed-off-by: gaohedong <gaohedong@xiaomi.com>
2025-12-25 18:09:03 +08:00
gaohedong 267df3a120 net/icmp: check the checksum field when recieve icmp message
According to RFC 792 page 4, do the icmp checksum if CONFIG_NET_ICMP_CHECKSUMS is set.

Signed-off-by: gaohedong <gaohedong@xiaomi.com>
2025-12-25 18:09:03 +08:00
wangchen c825404a2b net/icmp: Return -ENOPROTOOPT for SOL_SOCKET to avoid misleading logs
When SOL_SOCKET options (e.g., SO_BINDTODEVICE via ping -I) hit ICMP sockets, icmp_{get,set}sockopt logged “Unrecognized ICMP option: 17” before fallback. Handle SOL_SOCKET explicitly by returning -ENOPROTOOPT so psock_* routes to the socket-level handler. Removes noisy logs without changing behavior (invalid devices still return -ENODEV).

Signed-off-by: wangchen <wangchen41@xiaomi.com>
2025-12-25 14:09:12 +08:00
zhanghongyu e87082b195 net/utils/net_bufpool: add lock to struct net_bufpool_s and bufpool_navail
Add a lock to net_bufpool to simplify the protocol stack code.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2025-12-07 11:11:21 +08:00
zhanghongyu f7526522a1 icmp/icmpv6: fix the level parameter type
use a more standard definition

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2025-12-06 17:55:40 +08:00
zhanghongyu d697f1c4f6 icmp/icmp6: fix errno forgot to add a negative sign
otherwise, errors cannot be returned correctly

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2025-12-06 17:55:40 +08:00
Lars Kruse 3ce85ca54e style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
Zhe Weng 87a7714103 net: Split msg_iovlen check in recvmsg into each protocol
To prepare for supporting multiple iov in each protocol.

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
2025-01-20 17:12:14 +08:00
Zhe Weng 50b3ab7671 net/bufpool: Call init automatically on alloc
Note: Initialize function of protocols (tcp, udp, pkt, etc.) are kept empty.

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
2025-01-07 22:00:21 +08:00
Zhe Weng 1fe07d0838 net: Add buffer pool to replace connection allocation
Our net socket connection allocations are powerful but redundant
because they're implemented once in each protocol.  This is not good for
further optimizing and extending to other allocations, so maybe we can
add a common implementation for the usage.

Impact:
1. We add a `struct net_bufpool_s` as pool descriptor, which may use a
   little bit more memory than previous implementation (~28Bytes).
2. We share same functions between pools, so code size may shrink under
   some scenarios.

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
2024-12-23 16:57:19 -03:00
Zhe Weng 035fdb4951 net: Refresh config dependency of NET_READAHEAD
ICMP(v6) uses IOB queue as readahead, but TCP/UDP don't now.

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
2024-12-20 20:01:19 +08:00
chao an 4793407b67 net/icmp: fix typo timout -> timeout
Signed-off-by: chao an <anchao@lixiang.com>
2024-12-17 20:48:07 +08:00
Alin Jerpelea 67d02a45eb net: migrate to SPDX identifier
Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2024-09-12 01:08:11 +08:00
daichuan fe01d7c462 modify for offload checksum and add macro with tcp/icmp/icmpv6/igmp checksum
Signed-off-by: daichuan <daichuan@xiaomi.com>
2024-08-24 20:41:40 +08:00
wangchen 34fa02a652 icmp:add net_lock to protect icmp connection
Signed-off-by: wangchen <wangchen41@xiaomi.com>
2024-08-20 11:21:08 -03:00
Alan Carvalho de Assis 82946d0d5f net: Enable ICMP by default if IPv4 is enabled
Signed-off-by: Alan C. Assis <acassis@gmail.com>
2024-07-09 17:08:27 +08:00
liqinhui 05b101134a net:Support jumbo frame prealloc the iob for the ICMP/UDP/TCP.
For the ICMP, UDP and TCP, pre-alloc an iob for a jumbo frame.

Signed-off-by: liqinhui <liqinhui@xiaomi.com>
2024-06-02 09:31:37 -03:00
Xiang Xiao 2fd73bd82f net: Fix max conn always one less than configured value
return NULL only when the total number is larger than configured value

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2024-04-07 10:42:56 -03:00
Xiang Xiao eddd90de78 poll: pollsetup should notify only one fd passd by caller
since it's redundant to iterate the whole fds array in setup

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-11-21 09:07:17 +01:00
xuxin19 7a9d3c03e4 cmake:complete missing changes during reforming for net
Signed-off-by: xuxin19 <xuxin19@xiaomi.com>
2023-09-13 21:51:20 +08:00
chao an 7d1763a57c net/assert: remove all unnecessary check for psock/conn
Since inet/socket layer already contains sanity checks, so remove unnecessary lower half checks

Signed-off-by: chao an <anchao@xiaomi.com>
2023-08-30 20:36:49 +08:00
Zhe Weng d44e19d115 mm/iob: Add support for increasing length in iob_update_pktlen
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
2023-08-22 16:34:21 +09:00
zhanghongyu 3bd495c09d icmp: add SOCK_RAW type support
Since ICMPv6 has added SOCK_RAW, a SOCK_RAW related implementation has also
been added for ICMP.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2023-08-19 22:04:22 +08:00
Zhe Weng d3bca3c2cf net: Add FIOC_FILEPATH ioctl support for ICMP(v6)/RPMsg/Usrsock sockets
Example of /proc/PID/group/fd in this case:

FD  OFLAGS  TYPE POS       PATH
3   3       9    0         icmp:[dev eth0, id 1, flg 1]
4   3       9    0         icmp6:[dev eth0, id 2, flg 1]
5   3       9    0         rpmsg:[ap:[test:0]<->remote] # server side
5   3       9    0         rpmsg:[remote<->ap:[test:0]] # client side

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
2023-08-15 15:00:59 +08:00
chao an 6ee9ec7656 build: add initial cmake build system
1. Update all CMakeLists.txt to adapt to new layout
2. Fix cmake build break
3. Update all new file license
4. Fully compatible with current compilation environment(use configure.sh or cmake as you choose)

------------------

How to test

From within nuttx/. Configure:

cmake -B build -DBOARD_CONFIG=sim/nsh -GNinja
cmake -B build -DBOARD_CONFIG=sim:nsh -GNinja
cmake -B build -DBOARD_CONFIG=sabre-6quad/smp -GNinja
cmake -B build -DBOARD_CONFIG=lm3s6965-ek/qemu-flat -GNinja

(or full path in custom board) :
cmake -B build -DBOARD_CONFIG=$PWD/boards/sim/sim/sim/configs/nsh -GNinja

This uses ninja generator (install with sudo apt install ninja-build). To build:

$ cmake --build build

menuconfig:

$ cmake --build build -t menuconfig

--------------------------

2. cmake/build: reformat the cmake style by cmake-format

https://github.com/cheshirekow/cmake_format

$ pip install cmakelang

$ for i in `find -name CMakeLists.txt`;do cmake-format $i -o $i;done
$ for i in `find -name *\.cmake`;do cmake-format $i -o $i;done

Co-authored-by: Matias N <matias@protobits.dev>
Signed-off-by: chao an <anchao@xiaomi.com>
2023-07-08 13:50:48 +08:00
Zhe Weng f71fb738c5 net/icmp: Save poll device in icmp_poll_s
ICMP's conn->dev is changing in icmp_sendmsg, when sending to different
address, or when error occurs (like NETDEV_DOWN). Then the poll callback
cannot be dropped from previous dev in free, because the dev is wrong.

So add dev to struct icmp_poll_s just like struct udp_poll_s.

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
2023-06-06 19:33:21 +08:00
wangchen 2e6d0815b2 nuttx/net:Support to PMTUD
RFC 1191
When a router is unable to forward a datagram because it exceeds the
   MTU of the next-hop network and its Don't Fragment bit is set, the
   router is required to return an ICMP Destination Unreachable message
   to the source of the datagram, with the Code indicating
   "fragmentation needed and DF set".  To support the Path MTU Discovery
   technique specified in this memo, the router MUST include the MTU of
   that next-hop network in the low-order 16 bits of the ICMP header
   field that is labelled "unused" in the ICMP specification [7].  The
   high-order 16 bits remain unused, and MUST be set to zero.  Thus, the
   message has the following format:

       0                   1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |   Type = 3    |   Code = 4    |           Checksum            |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |           unused = 0          |         Next-Hop MTU          |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |      Internet Header + 64 bits of Original Datagram Data      |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
RFC 1185
Packet Too Big Message

       0                   1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |     Type      |     Code      |          Checksum             |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                             MTU                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                    As much of invoking packet                 |
      +               as will fit without the ICMPv6 packet           +
      |                       exceeding 576 octets                    |

   IPv6 Fields:

   Destination Address

                  Copied from the Source Address field of the invoking
                  packet.

   ICMPv6 Fields:

   Type           2

   Code           0

   MTU            The Maximum Transmission Unit of the next-hop link.

   Description

   A Packet Too Big MUST be sent by a router in response to a packet
   that it cannot forward because the packet is larger than the MTU of
   the outgoing link.  The information in this message is used as part
   of the Path MTU Discovery process [RFC-1191].

Signed-off-by: wangchen <wangchen41@xiaomi.com>
2023-05-12 10:21:52 -03:00
Xiang Xiao c39be172da net: Make si_accept callback optional
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-03-06 20:58:27 +02:00
Xiang Xiao 5dd037c599 net: Make si_connect callback optional
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-03-06 20:58:27 +02:00
Xiang Xiao a97e2523a4 net: Make si_listen callback optional
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-03-06 20:58:27 +02:00
Xiang Xiao 2553b7701c net: Remove the empty si_getpeername implementation
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-03-06 20:58:27 +02:00
Xiang Xiao 9b3715050b net: Make si_getsockname callback optional
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-03-06 20:58:27 +02:00
Xiang Xiao b3c1c55805 net: Make si_bind callback optional
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-03-06 20:58:27 +02:00