sergiotarxz/nuttx
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chao.an 9bdeed73e2 net/tcp: fix assertion of fallback connection alloc 
When the free connection list is unenough to alloc a new instance,
the TCP stack will reuse the currently closed connection, but if
the handle is not released by the user via close(2), the reference
count of the connection remains in a non-zero value, it will cause
the assertion to fail, so when the handle is not released we should
not use such a conn instance when being actively closed, and ensure
that the reference count is assigned within the net lock protection

|(gdb) bt
|#0  up_assert (filename=0x565c78f7 "tcp/tcp_conn.c", lineno=771) at sim/up_assert.c:75
|#1  0x56566177 in _assert (filename=0x565c78f7 "tcp/tcp_conn.c", linenum=771) at assert/lib_assert.c:36
|#2  0x5657d620 in tcp_free (conn=0x565fb3e0 <g_tcp_connections>) at tcp/tcp_conn.c:771
|#3  0x5657d5a1 in tcp_alloc (domain=2 '\002') at tcp/tcp_conn.c:700
|#4  0x565b1f50 in inet_tcp_alloc (psock=0xf3dea150) at inet/inet_sockif.c:144
|#5  0x565b2082 in inet_setup (psock=0xf3dea150, protocol=0) at inet/inet_sockif.c:253
|#6  0x565b1bf0 in psock_socket (domain=2, type=1, protocol=0, psock=0xf3dea150) at socket/socket.c:121
|#7  0x56588f5f in socket (domain=2, type=1, protocol=0) at socket/socket.c:278
|#8  0x565b11c0 in hello_main (argc=1, argv=0xf3dfab10) at hello_main.c:35
|#9  0x56566631 in nxtask_startup (entrypt=0x565b10ef <hello_main>, argc=1, argv=0xf3dfab10) at sched/task_startup.c:70
|#10 0x565597fa in nxtask_start () at task/task_start.c:134

Signed-off-by: chao.an <anchao@xiaomi.com>
2022-07-09 09:37:49 +09:00
..
arp
net: Remove devif_timer from comment
2022-06-07 20:15:41 +03:00
bluetooth
net: Remove the unnecessary initialization code
2022-03-12 19:24:17 +02:00
can
net: Fix typos, update comments in Kconfigs
2022-05-06 08:54:58 +02:00
devif
Packet dropped in IPv4/v6 input is now an info, not a warning
2022-06-09 16:07:34 +02:00
icmp
net: Ensure sendmsg and sendfile return -EAGAIN in case of timeout
2022-06-28 06:19:13 +03:00
icmpv6
net: Ensure sendmsg and sendfile return -EAGAIN in case of timeout
2022-06-28 06:19:13 +03:00
ieee802154
net: Remove the unnecessary initialization code
2022-03-12 19:24:17 +02:00
igmp
net/igmp: Remove igmp_initialize
2022-03-12 19:24:17 +02:00
inet
tcp: added debug asserts and logging to investigate the rare (conn->dev == NULL) bug in callback handlers
2022-02-26 11:48:07 -03:00
ipforward
net: Remove devif_timer from comment
2022-06-07 20:15:41 +03:00
local
fs/poll: change format for type pollevent_t
2022-04-07 12:14:06 +08:00
mld
net/tcp/netdev/mld: correct the netlock handling
2022-02-03 11:09:18 -03:00
neighbor
net: use HTONS, NTOHS, HTONL, NTOHL macro in kernel code
2022-01-18 10:59:47 +01:00
netdev
net_if: add IFF_LOOPBACK/POINTOPOINT/MULTICAST/BROADCAST
2022-07-03 09:57:10 -04:00
netlink
Fix ENOENT errors when polling on Netlink socket
2022-05-14 00:35:29 +03:00
pkt
net: Remove the unnecessary initialization code
2022-03-12 19:24:17 +02:00
procfs
…
route
use rmutex inside of all repeated implementation
2022-05-30 19:43:48 +08:00
rpmsg
openamp: Change the dependence from OPENAMP to RPTUN
2022-04-05 10:05:41 +03:00
sixlowpan
net: Ensure sendmsg and sendfile return -EAGAIN in case of timeout
2022-06-28 06:19:13 +03:00
socket
net:fix coverity warning
2022-04-03 14:37:53 +03:00
tcp
net/tcp: fix assertion of fallback connection alloc
2022-07-09 09:37:49 +09:00
udp
sched/wqueue: Change the return type of work_notifier_teardown to void
2022-05-14 00:35:29 +03:00
usrsock
fix: usrsock iovec_do skip empty iov
2022-04-14 02:47:31 +08:00
utils
Replace nxsem_timedwait_uninterruptible with nxsem_tickwait_uninterruptible
2022-05-15 13:55:58 +03:00
Kconfig
net: Fix typos, update comments in Kconfigs
2022-05-06 08:54:58 +02:00
Makefile
…
net_initialize.c
net: Reoder the initialize sequence(mac->ip->tcp/udp)
2022-03-12 19:24:17 +02:00
README.txt
…

README.txt 

README
======

Directory Structure
===================

  nuttx/
   |
   `- net/
       |
       +- arp        - Address resolution protocol (IPv4)
       +- bluetooth  - PF_BLUETOOTH socket interface
       +- devif      - Stack/device interface layer
       +- icmp       - Internet Control Message Protocol (IPv4)
       +- icmpv6     - Internet Control Message Protocol (IPv6)
       +- ieee802154 - PF_IEEE802154 socket interface
       +- inet       - PF_INET/PF_INET6 socket interface
       +- ipforward  - IP forwarding logic
       +- local      - Unix domain (local) sockets
       +- mld        - Multicast Listener Discovery (MLD)
       +- neighbor   - Neighbor Discovery Protocol (IPv6)
       +- netdev     - Socket network device interface
       +- netlink    - Netlink IPC socket interface
       +- pkt        - "Raw" packet socket support
       +- sixlowpan  - 6LoWPAN implementation
       +- socket     - BSD socket interface
       +- route      - Routing table support
       +- tcp        - Transmission Control Protocol
       +- udp        - User Datagram Protocol
       +- usrsock    - User socket API for user-space networking stack
       `- utils      - Miscellaneous utility functions

    +-------------------------------------------------------------------++------------------------+
    |                     Application layer                             || usrsock daemon         |
    +-------------------------------------------------------------------++------------------------+
    +-------------------------------------------------------------------++----------------+ +-----+
    |                   Socket layer (socket/)                          || /dev/usrsock   | |     |
    +-------------------------------------------------------------------++----------------+ |     |
    +------------++--------------------------------------------------++-------------------+ |     |
    |  Network   || Protocol stacks (arp, ipv6, icmp, pkt, tcp, udp) || usrsock/          | |     |
    |   Device   |+--------------------------------------------------++-------------------+ |     |
    | Interface  |+------------------------------------++---------------------------------+ |     |
    | (netdev/)  ||  Network Device Interface (devif/) || Utilities                       | |     |
    +------------++------------------------------------++---------------------------------+ |     |
    +----------------------------------------------------------------+                      |     |
    |                    Network Device Drivers                      |                      | HAL |
    +----------------------------------------------------------------+                      +-----+
    +----------------------------------------------------------------+ +--------------------------+
    |                    Networking Hardware                         | |  Hardware TCP/IP Stack   |
    +----------------------------------------------------------------+ +--------------------------+