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51 Commits

Author SHA1 Message Date
Zhe Weng 5aeb15469a netdev/ipv6: Move `xxx_ipv6multicast` from arch to common code 
The `xxx_ipv6multicast` function in each driver is not adapted to
multiple IPv6 addresses yet, and they're redundant, so try to take them
into common code.

Change:
1. Add MAC `g_ipv6_ethallnodes` and `g_ipv6_ethallrouters` in
   `icmpv6_devinit` and call them in `netdev_register`
2. Add multicast MAC for Neighbor Solicitation when adding any IPv6
   address, and remove them when IPv6 address is removed
3. Select `NET_MCASTGROUP` when `NET_ICMPv6` because now we need
   `d_addmac` when we have ICMPv6

Note:
We want modules outside net stack to call functions like
`netdev_ipv6_add` and never touch the related MAC address, so these MAC
functions are added as internal functions to `net/netdev/netdev.h`

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
 2023-12-16 05:26:16 -08:00
chao an 34d2cde8a8 net/l2/l3/l4: add support of iob offload 
1. Add new config CONFIG_NET_LL_GUARDSIZE to isolation of l2 stack,
   which will benefit l3(IP) layer for multi-MAC(l2) implementation,
   especially in some NICs such as celluler net driver.

new configuration options: CONFIG_NET_LL_GUARDSIZE

CONFIG_NET_LL_GUARDSIZE will reserved l2 buffer header size of
network buffer to isolate the L2/L3 (MAC/IP) data on network layer,
which will be beneficial to L3 network layer protocol transparent
transmission and forwarding

------------------------------------------------------------
Layout of frist iob entry:

        iob_data (aligned by CONFIG_IOB_ALIGNMENT)
            |
            |                  io_offset(CONFIG_NET_LL_GUARDSIZE)
            |                                |
            -------------------------------------------------
      iob   |            Reserved            |    io_len    |
            -------------------------------------------------

-------------------------------------------------------------
Layout of different NICs implementation:

        iob_data (aligned by CONFIG_IOB_ALIGNMENT)
            |
            |                 io_offset(CONFIG_NET_LL_GUARDSIZE)
            |                                |
            -------------------------------------------------
 Ethernet   |       Reserved    | ETH_HDRLEN |    io_len    |
            ---------------------------------|---------------
 8021Q      |   Reserved  | ETH_8021Q_HDRLEN |    io_len    |
            ---------------------------------|---------------
 ipforward  |            Reserved            |    io_len    |
            -------------------------------------------------

--------------------------------------------------------------------

2. Support iob offload to l2 driver to avoid unnecessary memory copy

Support send/receive iob vectors directly between the NICs and l3/l4
stack to avoid unnecessary memory copies, especially on hardware that
supports Scatter/gather, which can greatly improve performance.

new interface to support iob offload:

  ------------------------------------------
  |    IOB version     |     original      |
  |----------------------------------------|
  |  devif_iob_poll()  |   devif_poll()    |
  |       ...          |       ...         |
  ------------------------------------------

--------------------------------------------------------------------

1> NIC hardware support Scatter/gather transfer

TX:

                tcp_poll()/udp_poll()/pkt_poll()/...(l3|l4)
                           /              \
                          /                \
devif_poll_[l3|l4]_connections()     devif_iob_send() (nocopy:udp/icmp/...)
           /                                   \      (copy:tcp)
          /                                     \
  devif_iob_poll("NIC"_txpoll)                callback() // "NIC"_txpoll
                                                  |
                            dev->d_iob:           |
                                                ---------------         ---------------
                             io_data       iob1 |  |          |    iob3 |  |          |
                                    \           ---------------         ---------------
                                  ---------------  |       --------------- |
                             iob0 |  |          |  |  iob2 |  |          | |
                                  ---------------  |       --------------- |
                                     \             |          /           /
                                        \          |       /           /
                                   ----------------------------------------------
                    NICs io vector |    |    |    |    |    |    |    |    |    |
                                   ----------------------------------------------

RX:

  [tcp|udp|icmp|...]ipv[4|6]_data_handler()(iob_concat/append to readahead)
                    |
                    |
      [tcp|udp|icmp|...]_ipv[4|6]_in()/...
                    |
                    |
          pkt/ipv[4/6]_input()/...
                    |
                    |
     NICs io vector receive(iov_base to each iobs)

--------------------------------------------------------------------

2> CONFIG_IOB_BUFSIZE is greater than MTU:

TX:

"(CONFIG_IOB_BUFSIZE) > (MAX_NETDEV_PKTSIZE + CONFIG_NET_GUARDSIZE + CONFIG_NET_LL_GUARDSIZE)"

                tcp_poll()/udp_poll()/pkt_poll()/...(l3|l4)
                           /              \
                          /                \
devif_poll_[l3|l4]_connections()     devif_iob_send() (nocopy:udp/icmp/...)
           /                                   \      (copy:tcp)
          /                                     \
  devif_iob_poll("NIC"_txpoll)                callback() // "NIC"_txpoll
                                                  |
                                             "NIC"_send()
                          (dev->d_iob->io_data[CONFIG_NET_LL_GUARDSIZE - NET_LL_HDRLEN(dev)])

RX:

  [tcp|udp|icmp|...]ipv[4|6]_data_handler()(iob_concat/append to readahead)
                    |
                    |
      [tcp|udp|icmp|...]_ipv[4|6]_in()/...
                    |
                    |
          pkt/ipv[4/6]_input()/...
                    |
                    |
     NICs io vector receive(iov_base to io_data)

--------------------------------------------------------------------

3> Compatible with all old flat buffer NICs

TX:
                tcp_poll()/udp_poll()/pkt_poll()/...(l3|l4)
                           /              \
                          /                \
devif_poll_[l3|l4]_connections()     devif_iob_send() (nocopy:udp/icmp/...)
           /                                   \      (copy:tcp)
          /                                     \
  devif_iob_poll(devif_poll_callback())  devif_poll_callback() /* new interface, gather iobs to flat buffer */
       /                                           \
      /                                             \
 devif_poll("NIC"_txpoll)                     "NIC"_send()(dev->d_buf)

RX:

  [tcp|udp|icmp|...]ipv[4|6]_data_handler()(iob_concat/append to readahead)
                    |
                    |
      [tcp|udp|icmp|...]_ipv[4|6]_in()/...
                    |
                    |
               netdev_input()  /* new interface, Scatter/gather flat/iob buffer */
                    |
                    |
          pkt/ipv[4|6]_input()/...
                    |
                    |
    NICs io vector receive(Orignal flat buffer)

3. Iperf passthrough on NuttX simulator:

  -------------------------------------------------
  |  Protocol      | Server | Client |            |
  |-----------------------------------------------|
  |  TCP           |  813   |   834  |  Mbits/sec |
  |  TCP(Offload)  | 1720   |  1100  |  Mbits/sec |
  |  UDP           |   22   |   757  |  Mbits/sec |
  |  UDP(Offload)  |   25   |  1250  |  Mbits/sec |
  -------------------------------------------------

Signed-off-by: chao an <anchao@xiaomi.com>
 2022-12-03 11:47:04 +08:00
chao.an 58dcee641e net/netdev: move netdev_ifup/down to public header 
Signed-off-by: chao.an <anchao@xiaomi.com>
 2022-07-03 02:28:50 +08:00
Xiang Xiao 9072eecc30 sched/wqueue: Change the return type of work_notifier_teardown to void 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2022-05-14 00:35:29 +03:00
Xiang Xiao c562263205 net: Move if_nametoindex and if_indextoname to libc 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-12-19 10:08:57 -06:00
Xiang Xiao 20f5a28e49 net: Add if_nameindex and if_freenameindex API 
Specified here:
https://man7.org/linux/man-pages/man3/if_nameindex.3.html

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Ia5daed775bd11fa5978d54860632554da8f7b416
 2021-06-26 22:37:12 +01:00
Alin Jerpelea 37d5c1b0d9 net: Author Gregory Nutt: update licenses to Apache 
Gregory Nutt has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
 2021-02-20 00:38:18 -08:00
Alin Jerpelea 7dc7ef45f1 net: nxstyle fixes 
Nxstyle fixes to pass CI.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
 2021-02-20 00:38:18 -08:00
Xiang Xiao cde88cabcc Run codespell -w with the latest dictonary again 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2020-02-23 22:27:46 +01:00
Gregory Nutt 4ae09a3b80 net/netlink: Redesign the logic that handles notifications of when response data is available. Signal handlers are sub-optimal inside the OS (especially after the preceding change which forces the hand). Instead, use the work queue notifiers as is done with all other network notifiers. 2019-11-28 14:20:40 -06:00
Gregory Nutt 27e4bfffd4 Update some comments and README files. 2019-08-24 13:06:43 -06:00
Gregory Nutt efe65749ce Fix condition logic: The setup seems to support a network without sockets. That is not the case. 
Squashed commit of the following:

    sched/sched/sched_getsockets.c:  Fix an error in conditional compilation.
    fs/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    Documentation/:  Remove all references to CONFIG_NSOCKET_DESCRIPTORS == 0
    include/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    libs/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    net/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    sched/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    syscall/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    tools/:  Fixups for CONFIG_NSOCKET_DESCRIPTORS no longer used to disable sockets.
 2019-02-11 15:47:25 -06:00
Xiang Xiao 71e1056e6d net/icmpv6, neighbor, and netdev: Rename netdev_dev_lladdrsize() to netdev_lladdrsize() and move the prototype to include/nuttx/nex/netdev.h, giving is global scope within the OS. Reviewer: This degrades the integrity of the modular architecture by introducing a new coupling via C function call. Not a good thing at all. 2018-11-09 16:05:11 -06:00
Gregory Nutt dcb7ce8afd tools/nxstyle.c: Add logic to catch another formatting error and to eliminate some false alarms. Includes cosmetic changes to several files ... mostly as a result of testing nxstyle and finding issues. 2018-10-29 16:25:57 -06:00
Gregory Nutt 7d2b250cbc net/netdev: All utility functions that lookup network devices should begin with netdev_findby_. Also correct some comments and the name of a formal parameter. 2018-10-29 12:21:22 -06:00
Gregory Nutt 9f754ed1dc include/sys/sockio.h, net/netdev/netdev_ioctl.c: Fix a compile error introducted with commit 34db6d1433. That commit added the semi-standard ip_msfilter structure to netinet/in.h. Howver, there was a non-standard version of that structure in sys/sockio.h. This commit removes the non-standard version of struct ip_msfilter and adapts the IOCTL and device lookup logic in net/netdev to work with the new, semi-standard version in netinet/in.h. 2018-10-29 06:50:47 -06:00
Gregory Nutt 8c4cefdd10 Fix some new warndings found in build testing. 2018-09-15 13:22:45 -06:00
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
Gregory Nutt 32e3e51678 net/netdev: Add signal notification for the case where the network goes down. 2018-09-09 10:39:25 -06:00
Gregory Nutt c439b93627 net/procfs and netdev: Fix some problems with ifconfig introduced with last changes. Also picks up one of Sebastien's changes that did not make it it before. net/udp: Fixes a DEBUGASSERT. 2018-06-25 17:06:11 -06:00
Gregory Nutt 5a0cf3c9a8 net/netdev: Add an algorithm to prevent an interface index from being reused until all network interfaces have by assigned once. The prevents removable devices from being removed, unregistered and re-installed, re-registered and keeping the same interface index. 2018-06-25 12:57:42 -06:00
Gregory Nutt 7c1394d814 Squashed commit of the following: 
net/netdev:  Add implementation of if_nametoindex() and if indextoname().
    net/pkt:  Raw AF_PACKET sockets now depend on CONFIG_NETDEV_IFINDEX.
    net/procfs:  Tweak to handle traversal of interfaces if CONFIG_NETDEV_IFINDEX is not defined.
    net/netdev.h:  Update netdev_findbyaddr() to use the assigned device index.
    Trivial typo fix
    net/netdev:  Add support for assigned an interface index to a device when it is regisgtered.
 2018-06-25 12:08:10 -06:00
Gregory Nutt b54ffe858a Standardization of some function headers. 2018-03-13 09:52:27 -06:00
Gregory Nutt 7af976c00a Squashed commit of the following: 
Networking:  Add implementation of logic for SIOCGIFCONF and SIOCGLIFCOF IOCTL commnds.
    Networking:  Add definitions and stuctures to support SIOCGIFCONF and SIOCGLIFCONF IOCTL commands.
 2017-09-19 14:17:05 -06:00
Gregory Nutt 969d7c5814 Networking: Remove driver based backlog support. This affects the entire network, but is used by only one driver. The only supported with of supported RX backlog is via common read-ahead buffering. 2017-08-21 06:28:59 -06:00
Gregory Nutt efbb47999f Networking: Fix netdev_dev_lladdrsize. In some configurations, it could return the wrong size for the address of a packet radio. 2017-08-08 16:27:23 -06:00
Gregory Nutt aeb59383cf Remove CONFIG_NET_MULTILINK. This increases code size by a little, but greatly reduces the complexity of the network code. 2017-08-08 15:26:09 -06:00
Gregory Nutt bd7c84b23e Remove CONFIG_NETDEV_MULTINIC. This increases code size by a little, but greatly reduces the complexity of the network code. 2017-08-08 14:24:12 -06:00
Gregory Nutt b4a0ac53a8 Networking: Improve naming and simplify some logic of previous commit. 2017-07-07 06:51:52 -06:00
Gregory Nutt 70c6b52132 ICMPv6: Fix an address size calculation that was bungled in a recent commit. 2017-07-06 19:37:01 -06:00
Gregory Nutt d280f8854e include/nuttx/net and net/: Move private prototype of netdev_foreach() from the public include/nuttx/net/net.h to the private net/netdev/ndetdev.h header file where it belongs. 2017-07-01 08:39:39 -06:00
Gregory Nutt d5207efb5a Be consistent... Use Name: consistent in function headers vs Function: 2017-04-21 16:33:14 -06:00
Gregory Nutt 2c95fef501 Remove some empty code section comments 2016-02-26 07:35:55 -06:00
Gregory Nutt eb8668b0f7 net/: Add procfs support for network device status 2015-11-27 16:39:14 -06:00
Gregory Nutt 33085cb309 Networking: The network device list was protected by a re-entrant semaphore. With the recent change to support network device callback, the network stack needs to access the network device list too. Some drivers, however, run the network stack from the interrupt level -- this is bad but a fact in the current state. Of course,those drivers are unable to take the semaphore and will assert. 
The solution here is to eliminate the device devices semaphore altogether.  This eliminates netdev_semtake() and netdev_semgive() and replaces them with net_lock() and net_unlock() which have larger scope as needed for this purpose.
 2015-05-31 08:34:03 -06:00
Gregory Nutt 04a661a97c TCP networking: Add support for network driver events 2015-05-30 09:12:27 -06:00
Gregory Nutt f10fdf7ad4 Networking: Add a test to see a device pointer is still valid 2015-05-29 11:01:03 -06:00
Gregory Nutt 390eeaae69 Add function headers to netdev.h header file 2015-05-27 14:34:15 -06:00
Gregory Nutt b94321cfb4 Extend device specific callbacks to ICMPv6 and ARP. Fix some IPv6 compilation errors that have crept in 2015-05-27 11:39:44 -06:00
Gregory Nutt 8ecb84ed89 Improve icmp handling if MULTINIC enabled. From Max Neklyudov 2015-05-27 09:26:00 -06:00
Gregory Nutt b756df982d net/: Lots of build problems introduced into multiple NIC support. Many places where conditional logic based on CONFIG_NETDEV_MULTINIC is confused with CONFIG_NET_MULTILINK. Lots of code changed with IPv6 that was never compiled with MULTINIC enabled. Still some problem with parameter passing. 2015-02-09 18:15:34 -06:00
Gregory Nutt 9791e829f5 ICMPv6: This completes coding of the ICMPv6 auto-configuration feature. It is not yet functional 2015-02-03 15:40:56 -06:00
Gregory Nutt 5e938941a6 Networking: Replace all references to net_ipaddr_t with either in_addr_t on net_ipv6addr_t. The goal is to support both IPv4 and IPv6 simultaneously. This requires that the two types be distinct and not conditionally typedef'ed to net_ipaddr_t. 2015-01-16 12:30:18 -06:00
Gregory Nutt fe8b3c5220 Networking: More detangling of IPv6 logic. Next steps will be more invasive and will get moved to a branch 2015-01-16 08:51:18 -06:00
Gregory Nutt b36dbe1d89 Add logic to netdev_findbyaddr() to return the correct network device for the case where a broadcast address is used. This change caused trivial ripples through other files because additional parameters are required for netdev_findbyaddr() when CONFIG_NET_MULTINIC 2014-11-23 11:00:22 -06:00
Gregory Nutt 735aa4289a Network: Add logic to get a default network device (for the case where are multiple devices). For INADDR_ANY 2014-11-21 14:14:39 -06:00
Gregory Nutt 60246e613b NET: emoved all includes of uip.h; added includes of ip.h wherever needed. Tried to fix problems of the now missing sneak inclusions because uip.h was removed. There are probably a few of these that were missed. 2014-07-04 19:13:08 -06:00
Gregory Nutt 0bb153b8cb Remove all inclusion of uip.h 2014-07-04 16:58:22 -06:00
Gregory Nutt 899dc193ca NET: Renaming of IP address types 2014-06-29 12:22:50 -06:00
Gregory Nutt fce2a79abd Rename uip_driver_s net_driver_s 2014-06-27 16:48:12 -06:00