[lwip-devel] [bug #28064] pbuf_alloc(PBUF_POOL) is not thread-safe

[Simon Goldschmidt]

Update of bug #28064 (project lwip):

                Severity:              3 - Normal => 5 - Blocker            
                  Status:                    None => In Progress            
             Assigned to:                    None => goldsimon              
                 Summary: pbuf_alloc(PBUF_POOL) cannot be used from ISR any
more => pbuf_alloc(PBUF_POOL) is not thread-safe

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Follow-up Comment #2:

Updated summary and status:

This is a blocker: if the pbuf-pool is empty, pbuf_alloc_pool iterates the
tcp_active_pcbs list from every thread. This has been introduced with 1.3.1.

As nice as this feature (reclaiming ooseq pbufs) is, it doesn't work as it
is.

If we still want this, we have to implement it in another way so that the
ooseq-freeing code runs in the tcpip-thread.

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

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