[lwip-devel] [bug #21049] Allow reuse of pbufs after return from APIs

[Simon Goldschmidt]

Follow-up Comment #1, bug #21049 (project lwip):

As nice as this seems, it has a slightly different goal than the "udp_send"
thread in lwip-users. As I can see it (and this is also what I would expect
the API to behave), Julian expected the pbuf to come back like it was given to
udp_send().

The solution proposed here would let you re-fill the pbuf, but not really
re-use it (e.g. change a pre-filled pbuf...).

Of course, restoring them to what they were before has the dowside of making
the code bigger, even if you don't need that.

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