[lwip-devel] [bug #52190] Allow LWIP_SOCKET_OFFSET with an external FD_SET

[Douglas]

URL:
  <http://savannah.nongnu.org/bugs/?52190>

                 Summary: Allow LWIP_SOCKET_OFFSET with an external FD_SET
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: ourairquality
            Submitted on: Sun 08 Oct 2017 04:07:08 AM UTC
                Category: sockets/netconn
                Severity: 3 - Normal
              Item Group: Feature Request
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head

    _______________________________________________________

Details:

An error is currently generated compiling with LWIP_SOCKET_OFFSET set and
using an external FD_SET. Looking over the socket.c code suggested only one
possible problem, see patch. Most uses of an fd_set appear to respect the
LWIP_SOCKET_OFFSET. Would anyone happen to know the issue here?

When using lwip with newlib which defines FD_SET it would really help to be
able to define LWIP_SOCKET_OFFSET so that the socket descriptors can play well
with other driver descriptors, so that read write and close can dispatch off
the descriptor to various drivers and to lwip. So if the problems are not to
great I would like to try to get this working.



    _______________________________________________________

File Attachments:


-------------------------------------------------------
Date: Sun 08 Oct 2017 04:07:08 AM UTC  Name:
0001-Allow-LWIP_SOCKET_OFFSET-with-an-external-FD_SET.patch  Size: 1KiB   By:
ourairquality

<http://savannah.nongnu.org/bugs/download.php?file_id=42085>

    _______________________________________________________

Reply to this item at:

  <http://savannah.nongnu.org/bugs/?52190>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.nongnu.org/