[PATCH libnetfilter_queue 23/32] doc: Get doxygen to document useful static inline functions

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include/libnetfilter_queue/linux_list.h contains static inline list_add and
list_del which mnl programs may wish to use. Make a temporary copy of
linux_list.h with 'static' removed and get doxygen to process that.

Also add some detailed description and a SYNOPSIS line to linux_list.h.

Some problems remain with the generated man page.

Signed-off-by: Duncan Roe <duncan_roe@xxxxxxxxxxxxxxx>
---
 doxygen/Makefile.am                     |  3 +++
 doxygen/doxygen.cfg.in                  |  3 +--
 include/libnetfilter_queue/linux_list.h | 14 ++++++++++++++
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/doxygen/Makefile.am b/doxygen/Makefile.am
index aae1ccc..1784afa 100644
--- a/doxygen/Makefile.am
+++ b/doxygen/Makefile.am
@@ -14,7 +14,10 @@ doc_srcs = $(top_srcdir)/src/libnetfilter_queue.c\
 
 doxyfile.stamp: $(doc_srcs) Makefile build_man.sh
 	rm -rf html man
+	sed '/^static inline void [^_]/s/static //' \
+	  $(top_srcdir)/include/libnetfilter_queue/linux_list.h > linux_list.h
 	doxygen doxygen.cfg >/dev/null
+	rm linux_list.h
 
 if BUILD_MAN
 	$(abs_top_srcdir)/doxygen/build_man.sh libnetfilter_queue libnetfilter_queue.c
diff --git a/doxygen/doxygen.cfg.in b/doxygen/doxygen.cfg.in
index c795df1..601d4ab 100644
--- a/doxygen/doxygen.cfg.in
+++ b/doxygen/doxygen.cfg.in
@@ -5,8 +5,7 @@ ABBREVIATE_BRIEF       =
 FULL_PATH_NAMES        = NO
 TAB_SIZE               = 8
 OPTIMIZE_OUTPUT_FOR_C  = YES
-INPUT                  = @abs_top_srcdir@/src \
-                         @abs_top_srcdir@/include/libnetfilter_queue
+INPUT                  = @abs_top_srcdir@/src .
 FILE_PATTERNS          = *.c linux_list.h
 RECURSIVE              = YES
 EXCLUDE_SYMBOLS        = EXPORT_SYMBOL \
diff --git a/include/libnetfilter_queue/linux_list.h b/include/libnetfilter_queue/linux_list.h
index 500481d..6e67b9a 100644
--- a/include/libnetfilter_queue/linux_list.h
+++ b/include/libnetfilter_queue/linux_list.h
@@ -24,6 +24,20 @@
 
 /**
  * \defgroup List Circular doubly linked list implementation
+ *
+ * Unlike file units (which are re-used), network interface indicies
+ * increase monotonically as they are brought up and down.
+ *
+ * To keep memory usage predictable as indices increase,
+ * the nlif_* functions keep their data in a circular list
+ * (in fact a number of lists, to minimise search times).
+ *
+ * \manonly
+.SH SYNOPSIS
+.nf
+\fB
+#include <libnetfilter_queue/linux_list.h>
+\endmanonly
  * @{
  */
 
-- 
2.35.8





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