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YAMAMOTO Takashi 4878b7729c tcp: simplify readahead 
Do not bother to preserve segment boundaries in the tcp
readahead queues.

* Avoid wasting the tail IOB space for each segments.
  Instead, pack the newly received data into the tail space
  of the last IOB. Also, advertise the tail space as
  a part of the window.

* Use IOB chain directly. Eliminate IOB queue overhead.

* Allow to accept only a part of a segment.

* This change improves the memory efficiency.
  And probably more importantly, allows less-confusing
  recv window advertisement behavior.
  Previously, even when we advertise N bytes window,
  we often couldn't actually accept N bytes. Depending on
  the segment sizes and IOB configurations, it was causing
  segment drops.
  Also, the previous code was moving the right edge of the
  window back and forth too often, even when nothing in
  the system was competing on the IOBs. Shrinking the
  window that way is a kinda well known recipe to confuse
  the peer stack.
2021-06-30 06:22:14 +09:00
..
arp
net: arp: Fix a potential bug in arp_notify()
2021-03-31 12:23:35 -05:00
bluetooth
libc/assert: Reference the expression in all case
2021-04-03 21:00:41 +01:00
can
sourcefiles: Fix relative path in file header
2021-03-09 23:18:28 +08:00
devif
devif_poll_tcp_connections: Fix a comment typo
2021-05-31 01:37:51 -05:00
icmp
Include assert.h in necessary place
2021-06-08 13:06:08 -07:00
icmpv6
Include assert.h in necessary place
2021-06-08 13:06:08 -07:00
ieee802154
libc/assert: Reference the expression in all case
2021-04-03 21:00:41 +01:00
igmp
Don't include assert.h from public header file
2021-06-03 08:36:03 -07:00
inet
inet:sockif Fix warning
2021-05-03 16:55:48 -04:00
ipforward
Include assert.h in necessary place
2021-06-08 13:06:08 -07:00
local
net/local: Remove all HAVE_LOCAL_POLL reference
2021-06-17 07:09:10 -03:00
mld
Don't include assert.h from public header file
2021-06-03 08:36:03 -07:00
neighbor
Don't include assert.h from public header file
2021-06-03 08:36:03 -07:00
netdev
net: Add if_nameindex and if_freenameindex API
2021-06-26 22:37:12 +01:00
netlink
net/socket: move si_send/recv into sendmsg/recvmsg
2021-03-05 04:46:13 -08:00
pkt
sourcefiles: Fix relative path in file header
2021-03-09 23:18:28 +08:00
procfs
Don't include assert.h from public header file
2021-06-03 08:36:03 -07:00
route
Fix typos (and nxstyle errors)
2021-03-21 21:51:14 +01:00
rpmsg
Don't include assert.h from public header file
2021-06-03 08:36:03 -07:00
sixlowpan
tcp: window update improvements
2021-06-13 21:20:24 -05:00
socket
net/accept: alloc the accept fd after accept success
2021-06-11 05:00:21 -05:00
tcp
tcp: simplify readahead
2021-06-30 06:22:14 +09:00
udp
Include assert.h in necessary place
2021-06-08 13:06:08 -07:00
usrsock
net: fix nxstyle errors
2021-04-02 11:12:25 -05:00
utils
NuttX: Gregory Nutt: update licenses to Apache
2021-04-03 04:20:31 -07:00
Kconfig
net/socket_rpmsg: add net socket rpmsg support
2021-03-07 01:45:51 -08:00
Makefile
net/socket_rpmsg: add net socket rpmsg support
2021-03-07 01:45:51 -08:00
net_initialize.c
Remove the empty xxx_initialize functions
2021-03-03 08:21:04 +00:00
README.txt
net/loopback: Move g_lo_* global variable to libc/net/
2020-03-30 09:47:28 -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
       +- 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   |
    +----------------------------------------------------------------+ +--------------------------+