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581b67ade3
add config CONFIG_NET_ALLOC_CONNS to support allocate connect. Use this feature if the number of connections can not be determined at compile time. When enabled the stack will be compiled without the static pre-allocate connection list and all connection instances will be dynamically allocated from heap at run time. Signed-off-by: chao.an <anchao@xiaomi.com>
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 |
+----------------------------------------------------------------+ +--------------------------+