FreeCalypso > hg > freecalypso-sw
view rvinterf/include/limits.h @ 462:6500e1817d9b
doc/Roadmap: written
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Mon, 23 Jun 2014 20:39:36 +0000 |
parents | 2f285f20d617 |
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/* * For sizing our buffers etc in the rvinterf suite, including the local * UNIX domain socket protocol between rvinterf and fc-tmsh etc, we need * to have some limits on the message sizes in both host->target and * target->host directions. * * For the host->target direction, the choice of message size limit is * easy: the packet Rx code in RVT on the target side also has a limit * (quite naturally, as it needs to use a static buffer to reassemble * incoming packets as they arrive at the UART in unpredictable interrupt- * sized chunks), so we set our limit to match that in RVT. */ #define MAX_PKT_TO_TARGET 255 /* * In the other direction (target->host), there is no fixed limit * definition easily visible in the target fw code: any fw component * can call rvt_send_trace_cpy() or rvt_mem_alloc() followed by * rvt_send_trace_no_cpy(), or some higher-level API that reduces to * these functions, with a message of any size, subject only to memory * limits, which obviously aren't as strict as a #define'd maximum * message size. Hence in this direction we use our own arbitrary * choice of size limit. */ #define MAX_PKT_FROM_TARGET 512 /* * Both limit definitions above counts all bytes between the opening and * closing STX flags, but not DLEs inserted for binary transparency. */