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tcp: fixed TCPH_UNSET_FLAG macro

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This macro is only used by VJ support in PPP and was always wrong since
its introduction in commit e4a6d199fe. It's almost only used to clear
the PSH TCP flag when necessary. This flag was probably less common
about a decade ago so that would be the reason why it goes unnoticed for
so long.

Fixes: e4a6d199fe "Merged from DEVEL into main tree."
Signed-off-by: Sylvain Rochet <gradator@gradator.net>
This commit is contained in:
Sylvain Rochet 2016-01-24 00:42:52 +01:00
parent 90df2111b7
commit 733758a909
1 changed files with 1 additions and 1 deletions
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2
src/include/lwip/priv/tcp_priv.h
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@ -186,7 +186,7 @@ PACK_STRUCT_END
#define TCPH_HDRLEN_FLAGS_SET(phdr, len, flags) (phdr)->_hdrlen_rsvd_flags = htons(((len) << 12) | (flags))
#define TCPH_SET_FLAG(phdr, flags ) (phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags | htons(flags))
#define TCPH_UNSET_FLAG(phdr, flags) (phdr)->_hdrlen_rsvd_flags = htons(ntohs((phdr)->_hdrlen_rsvd_flags) | (TCPH_FLAGS(phdr) & ~(flags)) )
#define TCPH_UNSET_FLAG(phdr, flags) (phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags & ~htons(flags))
#define TCP_TCPLEN(seg) ((seg)->len + (((TCPH_FLAGS((seg)->tcphdr) & (TCP_FIN | TCP_SYN)) != 0) ? 1U : 0U))