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| author | Josh Blum <josh@joshknows.com> | 2011-02-20 01:13:03 -0800 |
|---|---|---|
| committer | Josh Blum <josh@joshknows.com> | 2011-02-20 01:13:03 -0800 |
| commit | 2d9838f467013d5397b6daf83afb5ccea92065a4 (patch) | |
| tree | cc34b6106523307a2f18eff86c3311f3458d9eb7 /host/docs/transport.rst | |
| parent | 8ab02dbef4cb36b2419371c131ff8c8edae88ce8 (diff) | |
| download | uhd-2d9838f467013d5397b6daf83afb5ccea92065a4.tar.gz uhd-2d9838f467013d5397b6daf83afb5ccea92065a4.tar.bz2 uhd-2d9838f467013d5397b6daf83afb5ccea92065a4.zip | |
udp: update docs for transport, create common header for wait implementation
Reimplemented simple udp transport with one impl class.
Moved wait for ready/select implementation into common header.
Important note on select, timeval should have usecs < 1 second
or it may error on some platforms. Fixed in this implementation.
Diffstat (limited to 'host/docs/transport.rst')
| -rw-r--r-- | host/docs/transport.rst | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/host/docs/transport.rst b/host/docs/transport.rst index 6b9d28bfa..2371d2497 100644 --- a/host/docs/transport.rst +++ b/host/docs/transport.rst @@ -17,13 +17,9 @@ that are known to perform well on a variety of systems. The transport parameters are defined below for the various transports in the UHD: ------------------------------------------------------------------------ -UDP transport (ASIO) +UDP transport (sockets) ------------------------------------------------------------------------ -The UDP transport is implemented with Boost's ASIO library. -ASIO provides an asynchronous API for user-space sockets. -The transport implementation allocates a number of buffers -and submits asynchronous requests for send and receive. -IO service threads run in the background to process these requests. +The UDP transport is implemented with standard user-space/Berkeley sockets. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Transport parameters @@ -35,8 +31,12 @@ The following parameters can be used to alter the transport's default behavior: * **send_frame_size:** The size of a single send buffer in bytes * **num_send_frames:** The number of send buffers to allocate -**Note:** num_recv_frames and num_send_frames will not have an effect -as the asynchronous send implementation is currently unimplemented. +**Note1:** num_recv_frames and num_send_frames do not affect performance. + +**Note2:** recv_frame_size and send_frame_size can be used to +increase or decrease the maximum number of samples per packet. +The frame sizes default to an MTU of 1472 bytes per IP/UDP packet, +and may be increased if permitted by your network hardware. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Flow control parameters |