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icmp6: keep to the RFC and send as much as possible with icmp6 error messages

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See bug 56013

Signed-off-by: Simon Goldschmidt <goldsimon@gmx.de>
This commit is contained in:
Simon Goldschmidt
2020-02-05 20:43:25 +01:00
parent ba3b04e7fe
commit 8f5a0aaacb
3 changed files with 14 additions and 10 deletions
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6
src/include/lwip/opt.h
View File

@@ -2496,10 +2496,12 @@
/**
* LWIP_ICMP6_DATASIZE: bytes from original packet to send back in
* ICMPv6 error messages.
* ICMPv6 error messages (0 = default of IP6_MIN_MTU_LENGTH)
* ATTENTION: RFC4443 section 2.4 says IP6_MIN_MTU_LENGTH is a MUST,
* so override this only if you absolutely have to!
*/
#if !defined LWIP_ICMP6_DATASIZE || defined __DOXYGEN__
#define LWIP_ICMP6_DATASIZE 8
#define LWIP_ICMP6_DATASIZE 0
#endif
/**

2
src/include/lwip/prot/icmp6.h
View File

@@ -146,6 +146,8 @@ PACK_STRUCT_END
# include "arch/epstruct.h"
#endif
#define ICMP6_HLEN 8
/** This is the ICMP6 header adapted for echo req/resp. */
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/bpstruct.h"