[lwip-devel] [bug #28064] pbuf_alloc(PBUF_POOL) cannot be used from ISR any more

[Simon Goldschmidt]

URL:
  <http://savannah.nongnu.org/bugs/?28064>

                 Summary: pbuf_alloc(PBUF_POOL) cannot be used from ISR any
more
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Fr 20 Nov 2009 17:51:30 GMT
                Category: pbufs
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 
            lwIP version: 1.3.1

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Details:

Since 1.3.1 (pbuf.c 1.131:  reclaim pbufs from TCP out-of-sequence segments
if we run out of pool pbufs), pbuf_alloc tries to free ooseq-queued-pbufs.

However, before that, drivers were allowed to allocate PBUF_POOL pbufs from
an ISR, which they now can't any more.




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