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15 Commits

Author SHA1 Message Date
Piyush Patle 0dccc8ba21 include/debug.h: Move to include/nuttx/debug.h 
debug.h is a NuttX-specific, non-POSIX header. Placing it in the
top-level include/ directory creates naming conflicts with external
projects that define their own debug.h.
This commit moves the canonical header to include/nuttx/debug.h,
following the NuttX convention for non-POSIX/non-standard headers,
and updates all in-tree references.

A backward-compatibility shim is left at include/debug.h that
emits a deprecation #warning and re-includes <nuttx/debug.h>,
allowing out-of-tree code to continue building while migrating.

Signed-off-by: Piyush Patle <piyushpatle228@gmail.com>
 2026-04-07 07:50:06 -03:00
zhanghongyu d5d6b65213 Revert "net: limit TCP and UDP send/recv buffer usage with throttled IOB" 
This reverts commit fa652f9c24.

When testing iperf on boards such as ESP32-C6, ESP32-C3, and ESP32,
blocking issues are encountered, so the patch is reverted.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
 2026-01-23 14:40:06 -03:00
zhanghongyu fa652f9c24 net: limit TCP and UDP send/recv buffer usage with throttled IOB 
The main content of this submission is to limit both the TX/RX buffers
of TCP/UDP to throttled IOBs, avoiding impacts on the sending and
receiving of control-type messages.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
 2026-01-21 20:06:47 +08:00
Zhe Weng b2db3a6430 net/netdev: Add netdev_iob_replace_l2 for netdev to avoid misuse 
And fix wrong `d_len` for IOBs from `upper->txq` in TX.

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
 2025-12-09 07:56:20 -03:00
Alin Jerpelea 67d02a45eb net: migrate to SPDX identifier 
Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
 2024-09-12 01:08:11 +08:00
liqinhui 05b101134a net:Support jumbo frame prealloc the iob for the ICMP/UDP/TCP. 
For the ICMP, UDP and TCP, pre-alloc an iob for a jumbo frame.

Signed-off-by: liqinhui <liqinhui@xiaomi.com>
 2024-06-02 09:31:37 -03:00
Zhe Weng 2a342d2424 net/netdev: Add netdev_iob_clone helper 
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
 2024-03-29 11:52:24 +08:00
Zhe Weng 1cf3147626 net/netdev: Avoid hardcoded guardsize when using d_iob 
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
 2023-01-18 14:41:07 +08:00
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
Zhe Weng 6222ad5764 Revert "net: downgrade iob priority of input/udp/icmp to avoid blocking devif" 
This reverts commit d87620abc9.
 2023-01-12 01:56:18 +08:00
chao an 35c1e53b1a net/netdev: clear device buffer handle by default 
Signed-off-by: chao an <anchao@xiaomi.com>
 2023-01-06 16:33:13 +08:00
Zhe Weng d87620abc9 net: downgrade iob priority of input/udp/icmp to avoid blocking devif 
When trying to use iperf2, we found it comsumes all the IOB when sending UDP packets, then devif_poll has no IOB to send the packet out, so speed drops to 0 and never recovers.

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
 2023-01-05 22:25:19 +08:00
Zhe Weng 2a780e0467 net/ipfwd: fix devif_forward after IOB offload. 
Problem:
- `iob_copyout` to `d_buf` doesn't set `io_len` of the IOB, so `devif_poll` failed to copy the data into `buf` by `iob_copyout`

Modification:
- Just Move the IOB in `devif_forward`.

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
 2022-12-06 17:03:47 +08:00
chao an 82d67b201a net/offload: add offload support for pkt/arp 
1. add offload support for pkt/arp
2. Reset the d_buf to NULL if d_iob has released

Signed-off-by: chao an <anchao@xiaomi.com>
 2022-12-04 01:34:30 +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