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  1. LWIP based TCP/IP
  2. PSLWIP-394

Backport fix for unexpected use of released switch buffers

          Details

          • Type: Change
          • Status: Closed
          • Priority: Minor
          • Resolution: Fixed
          • Affects Version/s: None
          • Fix Version/s: V4.6.0.0
          • Labels:
            None
          • Account:
            SPC TCP_IP (SPCTCPIP)

            Description

            When a switch with fragmented ethernet buffers is used, it can happen, that lwIP still uses buffers which it has released before. The problem ist caused by wrong reference counting during zero copy buffer handling.
             

            The problem can be observed with Profinet Device firmwares for netX50/netX100/netX500 chipsets since these have a split-buffer switch.

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                Bug - A problem which impairs or prevents the functions of the product. PSLWIP-388 Unexpected use of released switch buffers

                • Minor - Minor loss of function, or other problem where easy workaround is present.
                • Closed

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                        • Reporter:
                          AMesser Andreas Messer
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                          • Created:
                            Updated:
                            Resolved: