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nuttx/net
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chao an 36591af615 net/rpmsg: initialize semaphore count before wait 
recvmsg() will incorrectly return 0 if the count of sema before waiting is greater than 0,
This commit will reinitialize the sema count before waiting:

1181 static ssize_t rpmsg_socket_recvmsg(FAR struct socket *psock,
1182                                     FAR struct msghdr *msg, int flags)
1183 {
...
1255   ret = net_sem_timedwait(&conn->recvsem,
1256                       _SO_TIMEOUT(conn->sconn.s_rcvtimeo)); // recvsem.sem_count == 1; return 0
...
1264   if (!conn->recvdata)              // recvdata not consumed; goto else
1265     {
1266       ret = conn->recvlen;
1267     }
1268   else
1269     {
1270       conn->recvdata = NULL;
1271     }
...
1282   return ret;                        // BUGON! incorrectly return 0 to user
1283 }

Signed-off-by: chao an <anchao@xiaomi.com>
2023-05-16 17:15:42 +08:00
..
arp net: Remove the extra space 2023-05-03 15:18:21 +02:00
bluetooth net: remove conn-related casts 2023-05-10 19:32:09 -03:00
can net: remove conn-related casts 2023-05-10 19:32:09 -03:00
devif nuttx/net:Support to PMTUD 2023-05-12 10:21:52 -03:00
icmp nuttx/net:Support to PMTUD 2023-05-12 10:21:52 -03:00
icmpv6 nuttx/net:Support to PMTUD 2023-05-12 10:21:52 -03:00
ieee802154 net: remove conn-related casts 2023-05-10 19:32:09 -03:00
igmp support ipv4 ToS and ipv6 TrafficClass 2023-01-29 13:43:44 +08:00
inet ipv6_setsockopt: Merge similarity logic 2023-05-15 16:48:18 +08:00
ipforward forward: copy iob when broadcast forward 2023-05-06 03:18:08 +08:00
ipfrag nuttx/net:Support to PMTUD 2023-05-12 10:21:52 -03:00
local net/local: fix blocking local sockets 2023-05-11 11:39:00 +08:00
mld support ipv4 ToS and ipv6 TrafficClass 2023-01-29 13:43:44 +08:00
nat net/ip: fix compile break if disable NET_TCP 2023-02-07 12:46:40 +02:00
neighbor Replace all sprintf with snprintf 2023-05-08 09:57:01 +02:00
netdev net/procfs: Support to show MTU in netdev statistics 2023-04-28 09:45:21 +08:00
netfilter change strcpy to strlcpy 2023-02-24 12:15:40 +08:00
netlink net: remove conn-related casts 2023-05-10 19:32:09 -03:00
pkt net: remove conn-related casts 2023-05-10 19:32:09 -03:00
procfs net: Simplify the tcp/udp existence check 2023-05-03 17:40:00 +03:00
route net: use NXRMUTEX_INITIALIZER for rmutex init 2023-03-15 13:57:08 +01:00
rpmsg net/rpmsg: initialize semaphore count before wait 2023-05-16 17:15:42 +08:00
sixlowpan net: move ttl field into socket_conn_s struct 2023-05-13 12:39:53 +08:00
socket net: remove conn-related casts 2023-05-10 19:32:09 -03:00
tcp net: move ttl field into socket_conn_s struct 2023-05-13 12:39:53 +08:00
udp net: move ttl field into socket_conn_s struct 2023-05-13 12:39:53 +08:00
usrsock net/local: Return the unblock handle correctly in local_accept 2023-03-09 09:17:19 +01:00
utils net/net_cmsg.c: Fix warning about using void* arithmetics 2023-05-10 17:58:25 +08:00
Kconfig net/can: fix can mssage corruption if enable NET_TIMESTAMP 2023-04-27 00:30:58 +08:00
Makefile Support fragmentation and reassembly 2023-01-17 14:01:37 +08:00
net_initialize.c net: Reoder the initialize sequence(mac->ip->tcp/udp) 2022-03-12 19:24:17 +02:00
README.txt Support fragmentation and reassembly 2023-01-17 14:01:37 +08:00

README.txt 

README
======

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

  nuttx/
   |
   `- net/
       |
       +- arp        - Address resolution protocol (IPv4)
       +- bluetooth  - PF_BLUETOOTH socket interface
       +- devif      - Stack/device interface layer
       +- ipfrag     - Fragmentation and reassembly
       +- 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   |
    +----------------------------------------------------------------+ +--------------------------+