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A small little pedantism: NULL (as in, the pointer) isn't NUL (as in,
the character with value zero, '\0'). I propose to rename it to strz,
for the zero-terminated string (sometimes referred to as ASCIZ string,
but of course C isn't tied to ASCII).
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Davem spotted during the Netfilter Workshop that user-space applications
should use 8KB buffers for recv(). I accidentally found that NFLOG is
not following this approach (in this case we're using 131072 bytes
messages), we have to document this.
Anyway, according to linux/netlink.h (and to complete this log message):
"skb should fit one page. This choice is good for headerless malloc.
But we should limit to 8K so that userspace does not have to
use enormous buffer sizes on recvmsg() calls just to avoid
MSG_TRUNC when PAGE_SIZE is very large."
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Besides that -ldl should be in _LDADD (not _LDFLAGS), I do not see any
dlopen calls at all that would make the library a requirement.
I also see no reason to use -Wc,-nostartfiles.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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put examples files into specific directories according to the
Netlink bus they work with. And minor update in the readme file
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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