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9d3148406c
nuttx/net
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Gregory Nutt 9d3148406c Signals were not a good choice of IPC to implement the poll function for several reasons: In order to handle the asynchrnous poll-related event, a substantial amount of state information is needed. Signals are only capable of passing minimal amounts of data. There are also complexities with performing kernel space signal handlers in kernel space code that is better to avoid. So, instead of signals, the equivalent logic was converted to run via a callback that executes on the high-priority work queue. 
Squashed commit of the following:

    Fix up some final compile isses.

    net/netdev:  Convert the network down notification logic to use the new wqueue-based notification factility.

    net/udp:  Convert the UDP readahead notification logic to use the new wqueue-based notification factility.

    net/tcp:  Convert the TCP readahead notification logic to use the new wqueue-based notification factility.

    mm/iob:  Convert the IOB notification logic to use the new wqueue-based notification factility.

    sched/wqueue:  Signals are not good IPCs to support the target poll functionality for several reasons including the amount of data that can be passed with a signal and in the fact that in protected and kernel modes, user threads executing signal handlers in protected, kernel memory is problematic.  Instead, convert the same logic to perform the notifications via function callback on the high priority work queue.
2018-09-09 15:01:44 -06:00
..
arp net/arp/arp_out.c: Fix some backward logic in an if condition. 2018-08-29 10:51:44 -06:00
bluetooth Fix some errors in last commits found in build testing. 2018-07-19 10:30:52 -06:00
devif Rename the file devif_loopbackout.c to devif_loopback.c 2018-08-25 08:36:02 -06:00
icmp net/icmp and icmpv6: Fix failure to poll ICMP socket issue. 2018-08-26 15:37:03 -06:00
icmpv6 net/icmp and icmpv6: Fix failure to poll ICMP socket issue. 2018-08-26 15:37:03 -06:00
ieee802154 net/ and include/nuttx/net: Add getpeername() support 2018-07-19 07:16:30 -06:00
igmp Replace all ASSERT with DEBUGASSERT to save the code space 2018-08-24 06:58:30 -06:00
inet net/usrsock: Optimize option dependence 2018-08-26 15:05:46 -06:00
ipforward net/arp: Improve arp_find() commit 9774d35010 to reduce the amount and frequency of data copies. 2018-08-25 07:12:21 -06:00
local net/ and include/nuttx/net: Add getpeername() support 2018-07-19 07:16:30 -06:00
loopback Fix IPv6 loopback driver that depended on the removed g_ipv6_allonesaddr. Noted by Masayuki Ishikawa 2017-08-09 06:59:55 -06:00
neighbor net/: Fix a sixlowpan typo bug recently introduced; Rename g_ipv6_allzeroaddre with the more meaning g_ipv6_unspecaddr since the all-zero address is the IPv6 unspecified address (sometime IN6_ADDR_ANY). Remove more inline tests for IPv6 multicast with tcommint net_is_addr_mcast() macro. Update some comments. 2018-06-23 12:53:27 -06:00
netdev Signals were not a good choice of IPC to implement the poll function for several reasons: In order to handle the asynchrnous poll-related event, a substantial amount of state information is needed. Signals are only capable of passing minimal amounts of data. There are also complexities with performing kernel space signal handlers in kernel space code that is better to avoid. So, instead of signals, the equivalent logic was converted to run via a callback that executes on the high-priority work queue. 2018-09-09 15:01:44 -06:00
netlink This commit brings in a fragmentary, experimental implementation of NETLINK sockets. There is not too much to that socket support on this initial commit, just the netlink socketer framework. However, I decided to bring it into master because there is a enough that I would not want to lose what is in place. And since it is dependent on CONFIG_EXPERIMENATL, its presence on master should be innocuous. 2018-08-03 13:22:36 -06:00
pkt net/ and include/nuttx/net: Add getpeername() support 2018-07-19 07:16:30 -06:00
procfs net/procfs/netdev_statistics.c: Was not handling the output correct for the case of an IEEE 802.11 device. 2018-08-21 09:08:29 -06:00
route Remove trailing spaces at the end of lines. 2018-08-13 07:39:38 -06:00
sixlowpan Fix lots of typos in C comments and Kconfig help text 2018-07-08 18:24:45 -06:00
socket net/socket/getsockname.c: Add psock_getsockname function 2018-08-26 14:43:13 -06:00
tcp Signals were not a good choice of IPC to implement the poll function for several reasons: In order to handle the asynchrnous poll-related event, a substantial amount of state information is needed. Signals are only capable of passing minimal amounts of data. There are also complexities with performing kernel space signal handlers in kernel space code that is better to avoid. So, instead of signals, the equivalent logic was converted to run via a callback that executes on the high-priority work queue. 2018-09-09 15:01:44 -06:00
udp Signals were not a good choice of IPC to implement the poll function for several reasons: In order to handle the asynchrnous poll-related event, a substantial amount of state information is needed. Signals are only capable of passing minimal amounts of data. There are also complexities with performing kernel space signal handlers in kernel space code that is better to avoid. So, instead of signals, the equivalent logic was converted to run via a callback that executes on the high-priority work queue. 2018-09-09 15:01:44 -06:00
usrsock net/usrsock: Add the listen/accept/getpeername/ioctl support 2018-08-26 15:15:48 -06:00
utils Update some comments. 2018-07-07 15:23:46 -06:00
.gitignore
Kconfig net/Kconfig: Uncomment the prompt of NET_SLIP_PKTSIZE 2018-08-26 14:28:35 -06:00
Makefile This commit brings in a fragmentary, experimental implementation of NETLINK sockets. There is not too much to that socket support on this initial commit, just the netlink socketer framework. However, I decided to bring it into master because there is a enough that I would not want to lose what is in place. And since it is dependent on CONFIG_EXPERIMENATL, its presence on master should be innocuous. 2018-08-03 13:22:36 -06:00
net_initialize.c This commit brings in a fragmentary, experimental implementation of NETLINK sockets. There is not too much to that socket support on this initial commit, just the netlink socketer framework. However, I decided to bring it into master because there is a enough that I would not want to lose what is in place. And since it is dependent on CONFIG_EXPERIMENATL, its presence on master should be innocuous. 2018-08-03 13:22:36 -06:00
README.txt This commit brings in a fragmentary, experimental implementation of NETLINK sockets. There is not too much to that socket support on this initial commit, just the netlink socketer framework. However, I decided to bring it into master because there is a enough that I would not want to lose what is in place. And since it is dependent on CONFIG_EXPERIMENATL, its presence on master should be innocuous. 2018-08-03 13:22:36 -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
       +- loopback   - Local loopback
       +- 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   |
    +----------------------------------------------------------------+ +--------------------------+