[lwip-devel] [task #6735] Provide new pbuf type: PBUF_RAM_NOCOPY

[Simon Goldschmidt]

Follow-up Comment #6, task #6735 (project lwip):

Wouldn't it be good to add an assertion into sockets.c:lwip_sendto() at the
point where the pbuf is freed that there is no other reference to it? (i.e.
p->ref == 1) If ref is > 1, the MAC still holds a reference (because the
packet is still queued) and that might lead to wrong data being sent. If such
an assert triggers, the user must switch to use PBUF_RAM(_NOCOPY?) instead.

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