[GitHub] [incubator-nuttx] anchao opened a new pull request #3926: net/inet: add support of FIONREAD

[GitBox]

anchao opened a new pull request #3926:
URL: https://github.com/apache/incubator-nuttx/pull/3926


   ## Summary
   
   net/inet: add support of FIONREAD
   mm/iob: add iob_get_queue_size() helper
   
   ## Impact
   
   FIONREAD  int *argp
          Get the number of bytes in the input buffer.
   
   ## Testing
   
   ioctl(socketfd, FIONREAD, &size)
   


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