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chao an 22348c890b net/tcp: debug feature to drop the tx/rx packet 
Add 2 configurations
1. Config to drop recived packet
CONFIG_NET_TCP_DEBUG_DROP_RECV=y
CONFIG_NET_TCP_DEBUG_DROP_RECV_PROBABILITY=50 /* Default drop probability is 1/50 */

2. Config to drop sent packet
CONFIG_NET_TCP_DEBUG_DROP_SEND=y
CONFIG_NET_TCP_DEBUG_DROP_SEND_PROBABILITY=50 /* Default drop probability is 1/50 */

Iperf2 client/server test on esp32c3:

---------------------------------------------------------
|  TCP Config            | Server | Client |            |
|-------------------------------------------------------|
|  Original              |   12   |     9  |  Mbits/sec |
|  Drop(1/50)            |  0.6   |   0.3  |  Mbits/sec |
|  Drop(1/50) + OFO/SACK |    8   |     8  |  Mbits/sec |
---------------------------------------------------------

Signed-off-by: chao an <anchao@xiaomi.com>
2023-01-14 14:05:26 +08:00
..
arp
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
bluetooth
sem:remove sem default protocl
2022-10-22 14:50:48 +08:00
can
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
devif
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
icmp
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
icmpv6
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
ieee802154
sem:remove sem default protocl
2022-10-22 14:50:48 +08:00
igmp
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
inet
net_socket: add accept4 function
2023-01-11 23:28:08 +08:00
ipforward
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
local
net/local:set POLLIN/POLLOUT threshold for local fifo
2023-01-13 12:27:54 +08:00
mld
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
nat
net/nat: Clear entries when NAT will be disabled
2022-12-24 12:05:20 +08:00
neighbor
net/arp: Move arp_ipin and arp_out to private header file
2022-12-04 20:39:21 +08:00
netdev
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
netfilter
net: Add set/getsockopt options compatible with iptables.
2022-12-28 22:40:53 +08:00
netlink
net/arp: Remove nuttx/net/arp.h
2022-12-16 22:10:59 +02:00
pkt
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
procfs
compiler.h: Add _ between format|printf|syslog|scanf|strftime and like
2022-12-21 01:05:19 +02:00
route
include/endian.h: Fix format specifies type 'unsigned long' but the argument has type 'unsigned int'
2022-10-30 16:03:35 +01:00
rpmsg
net: remove psock reference from connect
2022-11-24 22:57:42 +08:00
sixlowpan
mm/iob: iob members are initialized after allocate
2022-12-16 09:51:53 +08:00
socket
net: Move accept to libc after https://github.com/apache/nuttx/pull/8083
2023-01-13 11:23:42 +02:00
tcp
net/tcp: debug feature to drop the tx/rx packet
2023-01-14 14:05:26 +08:00
udp
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
usrsock
move usrsock to kernel space
2023-01-11 15:14:03 +08:00
utils
wireless/bluetooth: add interrupt_context hander for netsnoop
2023-01-10 18:08:22 +08:00
Kconfig
net: Add set/getsockopt options compatible with iptables.
2022-12-28 22:40:53 +08:00
Makefile
net: Add set/getsockopt options compatible with iptables.
2022-12-28 22:40:53 +08:00
net_initialize.c
net: Reoder the initialize sequence(mac->ip->tcp/udp)
2022-03-12 19:24:17 +02:00
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   |
    +----------------------------------------------------------------+ +--------------------------+