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Fixed bug #31535: TCP_SND_QUEUELEN must be at least 2 or else no-copy TCP writes will never succeed.

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goldsimon
2010-11-20 17:34:10 +00:00
parent 4ace50a7d7
commit e3817cd549
3 changed files with 9 additions and 2 deletions
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3
src/core/init.c
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@@ -105,6 +105,9 @@
#if (LWIP_TCP && (TCP_SND_QUEUELEN > 0xffff))
#error "If you want to use TCP, TCP_SND_QUEUELEN must fit in an u16_t, so, you have to reduce it in your lwipopts.h"
#endif
#if (LWIP_TCP && (TCP_SND_QUEUELEN < 2))
#error "TCP_SND_QUEUELEN must be at least 2 for no-copy TCP writes to work"
#endif
#if (LWIP_TCP && ((TCP_MAXRTX > 12) || (TCP_SYNMAXRTX > 12)))
#error "If you want to use TCP, TCP_MAXRTX and TCP_SYNMAXRTX must less or equal to 12 (due to tcp_backoff table), so, you have to reduce them in your lwipopts.h"
#endif