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Xiang Xiao 906cb8b0f4 net/tcp: tcp_sendfile need restore the file location at the end 
quote from https://man7.org/linux/man-pages/man2/sendfile.2.html:
If offset is not NULL, then it points to a variable holding the
file offset from which sendfile() will start reading data from
in_fd.  When sendfile() returns, this variable will be set to the
offset of the byte following the last byte that was read.  If
offset is not NULL, then sendfile() does not modify the file
offset of in_fd; otherwise the file offset is adjusted to reflect
the number of bytes read from in_fd.
If offset is NULL, then data will be read from in_fd starting at
the file offset, and the file offset will be updated by the call.

The change also align with the implementation at:
libs/libc/misc/lib_sendfile.c

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I607944f40b04f76731af7b205dcd319b0637fa04
2021-07-12 05:20:45 -07:00
..
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
net/socketpair: move socketpair implement into socket internal
2021-07-08 03:05:43 -05:00
ipforward
Include assert.h in necessary place
2021-06-08 13:06:08 -07:00
local
net/local: add AF_[UNIX|LOCAL] socketpair support
2021-07-08 03:05:43 -05:00
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/inet: add support of FIONREAD
2021-07-05 06:20:52 -05:00
netlink
netlink: fix compile error when enable netlink
2021-07-01 06:55:57 -05:00
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
rpmsg_socket: fix rpmsg_socket_device_destroy() multi-access
2021-07-04 06:23:07 -05:00
sixlowpan
net/tcp: change all window relative value type to uint32_t
2021-07-07 03:55:41 -05:00
socket
net/socketpair: move socketpair implement into socket internal
2021-07-08 03:05:43 -05:00
tcp
net/tcp: tcp_sendfile need restore the file location at the end
2021-07-12 05:20:45 -07:00
udp
net/socket: add SO_RCVBUF support
2021-07-06 01:44:55 -05:00
usrsock
usrsock/recv: guarantee all data is received before close
2021-07-07 08:40:55 +09:00
utils
NuttX: Gregory Nutt: update licenses to Apache
2021-04-03 04:20:31 -07:00
Kconfig
net/socket: add SO_RCVBUF support
2021-07-06 01:44:55 -05:00
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   |
    +----------------------------------------------------------------+ +--------------------------+