[lwip-devel] [task #14369] Define ways to work with a netif having multiple ports

[Simon Goldschmidt]

URL:
  <http://savannah.nongnu.org/task/?14369>

                 Summary: Define ways to work with a netif having multiple
ports
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Fri 10 Feb 2017 08:46:14 PM UTC
                Category: None
         Should Start On: Fri 10 Feb 2017 12:00:00 AM UTC
   Should be Finished on: Fri 10 Feb 2017 12:00:00 AM UTC
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
                  Effort: 0.00

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Details:

E.g. when using a switch IC, we might need to
a) detect the RX port when a pbuf is received in lwIP and
b) tell the switch to auto-select (1 or more) target 
port(s) or send to (one or more) specific port(s)

I could implement an 8-port switch by having 9 netifs, but the decision
whether a non-unicast RX pbuf gets passed to the port netif or the IP
(virtual) netif is rather tricky, and it might be better off by providing the
application with the source port.




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