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chao an 8a63d29c6e net/devif_poll: optimize device buffer alloc in txpoll 
Allocate the device buffer only if the protocol really need to send data.
not all protocols require the driver to prepare additional iob before
sending, especially UDP, each iob reserves l2/l3 header in advance
after prepare write buffer, net device could reuse this entry to send directly

Signed-off-by: chao an <anchao@xiaomi.com>
2023-01-13 16:41:10 +08:00
..
arp
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
bluetooth
…
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
…
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
…
neighbor
…
netdev
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
netfilter
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netlink
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pkt
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +08:00
procfs
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route
…
rpmsg
…
sixlowpan
…
socket
net_socket: add accept4 function
2023-01-11 23:28:08 +08:00
tcp
net/devif_poll: optimize device buffer alloc in txpoll
2023-01-13 16:41:10 +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
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Makefile
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net_initialize.c
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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   |
    +----------------------------------------------------------------+ +--------------------------+
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