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Xiang Xiao 90c52e6f8f Squashed commit of the following: 
Author: Gregory Nutt <gnutt@nuttx.org>

    Run all .h and .c files modified in last PR through nxstyle.

Author: Xiang Xiao <xiaoxiang@xiaomi.com>

    Net cleanup (#17)

    * Fix the semaphore usage issue found in tcp/udp

    1. The count semaphore need disable priority inheritance
    2. Loop again if net_lockedwait return -EINTR
    3. Call nxsem_trywait to avoid the race condition
    4. Call nxsem_post instead of sem_post

    * Put the work notifier into free list to avoid the heap fragment in the long run.  Since the allocation strategy is encapsulated internally, we can even refine the implementation later.

    * Network stack shouldn't allocate memory in the poll implementation to avoid the heap fragment in the long run, other modification include:

    1. Select MM_IOB automatically since ICMP[v6] socket can't work without the read ahead buffer
    2. Remove the net lock since xxx_callback_free already do the same thing
    3. TCP/UDP poll should work even the read ahead buffer isn't enabled at all

    * Add NET_ prefix for UDP_NOTIFIER and TCP_NOTIFIER option to align with other UDP/TCP option convention

    * Remove the unused _SF_[IDLE|ACCEPT|SEND|RECV|MASK] flags since there are code to set/clear these flags, but nobody check them.
2019-12-31 09:26:14 -06:00
..
arp Squashed commit of the following: 2019-11-08 11:16:04 -06:00
bluetooth Squashed commit of the following: 2019-12-31 09:26:14 -06:00
devif Correct some problems with network timed events when there are multiple network devices in the configuration. 2019-12-24 10:37:30 -06:00
icmp Squashed commit of the following: 2019-12-31 09:26:14 -06:00
icmpv6 Squashed commit of the following: 2019-12-31 09:26:14 -06:00
ieee802154 Squashed commit of the following: 2019-12-31 09:26:14 -06:00
igmp net/igmp/igmp_send.c: Fix a typo in a debug statement. Noted by Bernd Walter. 2019-09-25 13:46:24 -06:00
inet Squashed commit of the following: 2019-12-31 09:26:14 -06:00
ipforward net/: Run nxstyle against all C files. 2019-10-25 11:31:42 -06:00
local Squashed commit of the following: 2019-12-31 09:26:14 -06:00
loopback tools/nxstyle.c: Fix logic error that prevent detecion of '/' and '/=' as operators. net/: Minor updates resulting from testing tools/nxstyle. 2019-03-11 12:48:39 -06:00
mld net/: Run nxstyle against all C files. 2019-10-25 11:31:42 -06:00
neighbor Trivial update to some comments. 2019-11-08 12:06:29 -06:00
netdev net/netlink: Redesign the logic that handles notifications of when response data is available. Signal handlers are sub-optimal inside the OS (especially after the preceding change which forces the hand). Instead, use the work queue notifiers as is done with all other network notifiers. 2019-11-28 14:20:40 -06:00
netlink net/netlink/netlink_conn.c: Fix some really basic errors in the redesign of the asynchronous Netlink response logic. 2019-11-28 16:14:59 -06:00
pkt Squashed commit of the following: 2019-12-31 09:26:14 -06:00
procfs net/: Run nxstyle against all C files. 2019-10-25 11:31:42 -06:00
route boards/sim/sim/sim/src/sim_bringup.c: Mount tmpfs to CONFIG_LIBC_TMPDIR in sim_bringup if CONFIG_FS_TMPFS is defined. 2019-11-23 07:58:50 -06:00
sixlowpan Squashed commit of the following: 2019-12-31 09:26:14 -06:00
socket Squashed commit of the following: 2019-12-31 09:26:14 -06:00
tcp Squashed commit of the following: 2019-12-31 09:26:14 -06:00
udp Squashed commit of the following: 2019-12-31 09:26:14 -06:00
usrsock Squashed commit of the following: 2019-12-31 09:26:14 -06:00
utils net/: Now handles reception of IPv4 packets with larger IPv4 headers containing options. 2019-08-31 12:25:30 -06:00
.gitignore
Kconfig net/Kconfig: Ethernet packet buffer size cannot be permitted to go below 1294 is IPv6 is selected. 2019-08-31 09:08:32 -06:00
Makefile net/mld: Add basic build structure for Multicast Listener Discovery (MLD). No real MLD logic yet. Only a few hooks to capture and dispatch MLD ICMPv6 packets. 2018-10-31 14:10:19 -06:00
net_initialize.c Squashed commit of the following: 2019-06-02 11:05:31 -06:00
README.txt net/mld: Add basic build structure for Multicast Listener Discovery (MLD). No real MLD logic yet. Only a few hooks to capture and dispatch MLD ICMPv6 packets. 2018-10-31 14:10:19 -06:00

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
       +- loopback   - Local loopback
       +- 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   |
    +----------------------------------------------------------------+ +--------------------------+