22 files changed, 7943 insertions, 0 deletions

diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am
new file mode 100644
index 0000000..c1a6d81
--- /dev/null
+++ b/src/lib/Makefile.am
@@ -0,0 +1,75 @@
+AM_CFLAGS = -I $(top_srcdir)/include $(LLDP_CFLAGS)
+AM_CPPFLAGS = $(LLDP_CPPFLAGS)
+AM_LDFLAGS = $(LLDP_LDFLAGS)
+
+lib_LTLIBRARIES = liblldpctl.la
+include_HEADERS = lldpctl.h
+
+noinst_LTLIBRARIES = libfixedpoint.la
+libfixedpoint_la_SOURCES = fixedpoint.h fixedpoint.c
+
+ATOM_FILES = \
+	atoms/config.c atoms/dot1.c atoms/dot3.c \
+	atoms/interface.c atoms/med.c atoms/mgmt.c atoms/port.c \
+	atoms/custom.c atoms/chassis.c
+liblldpctl_la_SOURCES = \
+	lldpctl.h atom.h helpers.h \
+	errors.c connection.c atom.c helpers.c \
+	$(ATOM_FILES)
+nodist_liblldpctl_la_SOURCES = atom-glue.c
+liblldpctl_la_LIBADD  = $(top_builddir)/src/libcommon-daemon-lib.la libfixedpoint.la
+
+atom-glue.c: $(ATOM_FILES) Makefile
+	$(AM_V_GEN)(for f in $(ATOM_FILES:%=$(srcdir)/%); do \
+		$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+		$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) $$f; done | \
+		$(SED) -n 's+^void init_atom_builder_\([^(]*\)(void).*, \([0-9]*\)).*+\2 \1+p' | \
+		sort | \
+		$(AWK) '{ atoms[$$2] = 1 } \
+			 END { for (atom in atoms) { print "void init_atom_builder_"atom"(void);" } \
+			       print "void init_atom_builder(void);"; \
+			       print "void init_atom_builder(void) {"; \
+                               print " static int init = 0; if (init) return; init++;"; \
+			       for (atom in atoms) { print " init_atom_builder_"atom"();" } \
+			       print "}"; }' && \
+		for f in $(ATOM_FILES:%=$(srcdir)/%); do \
+		$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+		$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) $$f; done | \
+		$(SED) -n 's+^void init_atom_map_\([^(]*\)(void).*, \([0-9]*\)).*+\2 \1+p' | \
+		sort -n | \
+		$(AWK) '{ atoms[$$2] = 1 } \
+			 END { for (atom in atoms) { print "void init_atom_map_"atom"(void);" } \
+			       print "void init_atom_map(void);"; \
+			       print "void init_atom_map(void) {"; \
+                               print " static int init = 0; if (init) return; init++;"; \
+			       for (atom in atoms) { print " init_atom_map_"atom"();" } \
+			       print "}"; }' ) \
+		> $@.tmp
+	$(AM_V_at)$(GREP) -q init_atom_builder_ $@.tmp
+	$(AM_V_at)$(GREP) -q init_atom_map_ $@.tmp
+	$(AM_V_at)mv $@.tmp $@
+CLEANFILES = atom-glue.c
+
+# -version-info format is `current`:`revision`:`age`. For more details, see:
+#   https://www.sourceware.org/autobook/autobook/autobook_61.html#Library-Versioning
+#
+# -version-number could be computed from -version-info, mostly major
+# is `current` - `age`, minor is `age` and revision is `revision' and
+# major.minor should be used when updating lldpctl.map.
+liblldpctl_la_LDFLAGS = $(AM_LDFLAGS) -version-info 13:1:9
+liblldpctl_la_DEPENDENCIES = libfixedpoint.la
+
+if HAVE_LD_VERSION_SCRIPT
+liblldpctl_la_DEPENDENCIES += lldpctl.map
+liblldpctl_la_LDFLAGS += -Wl,--version-script=$(srcdir)/lldpctl.map
+else
+liblldpctl_la_LDFLAGS += -export-symbols-regex '^lldpctl_'
+endif
+
+pkgconfig_DATA = lldpctl.pc
+
+TEMPLATES  = lldpctl.pc
+EXTRA_DIST = lldpctl.pc.in lldpctl.map
+CLEANFILES += $(TEMPLATES)
+lldpctl.pc: lldpctl.pc.in
+include $(top_srcdir)/edit.am
diff --git a/src/lib/Makefile.in b/src/lib/Makefile.in
new file mode 100644
index 0000000..9306493
--- /dev/null
+++ b/src/lib/Makefile.in
@@ -0,0 +1,978 @@
+# Makefile.in generated by automake 1.16.5 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
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+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
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+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
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+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
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+  skip_next=no; \
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+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
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+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+@HAVE_LD_VERSION_SCRIPT_TRUE@am__append_1 = lldpctl.map
+@HAVE_LD_VERSION_SCRIPT_TRUE@am__append_2 = -Wl,--version-script=$(srcdir)/lldpctl.map
+@HAVE_LD_VERSION_SCRIPT_FALSE@am__append_3 = -export-symbols-regex '^lldpctl_'
+subdir = src/lib
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+	$(top_srcdir)/m4/args.m4 \
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+	$(top_srcdir)/m4/ax_cflags_gcc_option.m4 \
+	$(top_srcdir)/m4/ax_ld_check_flag.m4 \
+	$(top_srcdir)/m4/ax_lib_readline.m4 \
+	$(top_srcdir)/m4/ax_prog_doxygen.m4 \
+	$(top_srcdir)/m4/config_subdirs.m4 \
+	$(top_srcdir)/m4/ld-version-script.m4 \
+	$(top_srcdir)/m4/libcap.m4 $(top_srcdir)/m4/libevent.m4 \
+	$(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/ltoptions.m4 \
+	$(top_srcdir)/m4/ltsugar.m4 $(top_srcdir)/m4/ltversion.m4 \
+	$(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/m4/os.m4 \
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+	$(top_srcdir)/configure.ac
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+	$(ACLOCAL_M4)
+DIST_COMMON = $(srcdir)/Makefile.am $(include_HEADERS) \
+	$(am__DIST_COMMON)
+mkinstalldirs = $(install_sh) -d
+CONFIG_HEADER = $(top_builddir)/config.h
+CONFIG_CLEAN_FILES =
+CONFIG_CLEAN_VPATH_FILES =
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+am__vpath_adj = case $$p in \
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+  sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
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+         $(am__cd) "$$dir" && rm -f $$files; }; \
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+am__installdirs = "$(DESTDIR)$(libdir)" "$(DESTDIR)$(pkgconfigdir)" \
+	"$(DESTDIR)$(includedir)"
+LTLIBRARIES = $(lib_LTLIBRARIES) $(noinst_LTLIBRARIES)
+libfixedpoint_la_LIBADD =
+am_libfixedpoint_la_OBJECTS = fixedpoint.lo
+libfixedpoint_la_OBJECTS = $(am_libfixedpoint_la_OBJECTS)
+AM_V_lt = $(am__v_lt_@AM_V@)
+am__v_lt_ = $(am__v_lt_@AM_DEFAULT_V@)
+am__v_lt_0 = --silent
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+am__dirstamp = $(am__leading_dot)dirstamp
+am__objects_1 = atoms/config.lo atoms/dot1.lo atoms/dot3.lo \
+	atoms/interface.lo atoms/med.lo atoms/mgmt.lo atoms/port.lo \
+	atoms/custom.lo atoms/chassis.lo
+am_liblldpctl_la_OBJECTS = errors.lo connection.lo atom.lo helpers.lo \
+	$(am__objects_1)
+nodist_liblldpctl_la_OBJECTS = atom-glue.lo
+liblldpctl_la_OBJECTS = $(am_liblldpctl_la_OBJECTS) \
+	$(nodist_liblldpctl_la_OBJECTS)
+liblldpctl_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(liblldpctl_la_LDFLAGS) $(LDFLAGS) -o $@
+AM_V_P = $(am__v_P_@AM_V@)
+am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
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+	./$(DEPDIR)/fixedpoint.Plo ./$(DEPDIR)/helpers.Plo \
+	atoms/$(DEPDIR)/chassis.Plo atoms/$(DEPDIR)/config.Plo \
+	atoms/$(DEPDIR)/custom.Plo atoms/$(DEPDIR)/dot1.Plo \
+	atoms/$(DEPDIR)/dot3.Plo atoms/$(DEPDIR)/interface.Plo \
+	atoms/$(DEPDIR)/med.Plo atoms/$(DEPDIR)/mgmt.Plo \
+	atoms/$(DEPDIR)/port.Plo
+am__mv = mv -f
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+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(AM_LDFLAGS) $(LDFLAGS) -o $@
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+am__v_CCLD_ = $(am__v_CCLD_@AM_DEFAULT_V@)
+am__v_CCLD_0 = @echo "  CCLD    " $@;
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+SOURCES = $(libfixedpoint_la_SOURCES) $(liblldpctl_la_SOURCES) \
+	$(nodist_liblldpctl_la_SOURCES)
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+am__can_run_installinfo = \
+  case $$AM_UPDATE_INFO_DIR in \
+    n|no|NO) false;; \
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+include_HEADERS = lldpctl.h
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+libfixedpoint_la_SOURCES = fixedpoint.h fixedpoint.c
+ATOM_FILES = \
+	atoms/config.c atoms/dot1.c atoms/dot3.c \
+	atoms/interface.c atoms/med.c atoms/mgmt.c atoms/port.c \
+	atoms/custom.c atoms/chassis.c
+
+liblldpctl_la_SOURCES = \
+	lldpctl.h atom.h helpers.h \
+	errors.c connection.c atom.c helpers.c \
+	$(ATOM_FILES)
+
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+liblldpctl_la_LIBADD = $(top_builddir)/src/libcommon-daemon-lib.la libfixedpoint.la
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+# -version-info format is `current`:`revision`:`age`. For more details, see:
+#   https://www.sourceware.org/autobook/autobook/autobook_61.html#Library-Versioning
+#
+# -version-number could be computed from -version-info, mostly major
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+        -e 's|@sbindir[@]|$(sbindir)|g' \
+        -e 's|@sysconfdir[@]|$(sysconfdir)|g' \
+        -e 's|@pkgdatadir[@]|$(pkgdatadir)|g' \
+        -e 's|@libdir[@]|$(libdir)|g' \
+        -e 's|@srcdir[@]|$(srcdir)|g' \
+        -e 's|@top_builddir[@]|$(top_builddir)|g' \
+        -e 's|@includedir[@]|$(includedir)|g' \
+        -e 's|@exec_prefix[@]|$(exec_prefix)|g' \
+        -e 's|@prefix[@]|$(prefix)|g' \
+        -e 's|@VERSION[@]|$(VERSION)|g' \
+        -e 's|@PACKAGE[@]|$(PACKAGE)|g' \
+        -e 's|@PACKAGE_NAME[@]|$(PACKAGE_NAME)|g' \
+        -e 's|@PACKAGE_URL[@]|$(PACKAGE_URL)|g' \
+        -e 's|@PRIVSEP_USER[@]|$(PRIVSEP_USER)|g' \
+        -e 's|@PRIVSEP_GROUP[@]|$(PRIVSEP_GROUP)|g' \
+        -e 's|@PRIVSEP_CHROOT[@]|$(PRIVSEP_CHROOT)|g' \
+        -e 's|@LLDPD_PID_FILE[@]|$(LLDPD_PID_FILE)|g' \
+        -e 's|@LLDPD_CTL_SOCKET[@]|$(LLDPD_CTL_SOCKET)|g' \
+        -e 's|@PRIVSEP_CHROOT[@]|$(PRIVSEP_CHROOT)|g'
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+	$(am__cd) $(top_srcdir) && \
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+	  *config.status*) \
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+	test -z "$$list2" || { \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libdir)" || exit 1; \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(libdir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(libdir)"; \
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+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/$$f"; \
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+clean-libLTLIBRARIES:
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+	@list='$(lib_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
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+clean-noinstLTLIBRARIES:
+	-test -z "$(noinst_LTLIBRARIES)" || rm -f $(noinst_LTLIBRARIES)
+	@list='$(noinst_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
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+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
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+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+	-rm -f atoms/*.$(OBJEXT)
+	-rm -f atoms/*.lo
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+
+distclean: distclean-am
+		-rm -f ./$(DEPDIR)/atom-glue.Plo
+	-rm -f ./$(DEPDIR)/atom.Plo
+	-rm -f ./$(DEPDIR)/connection.Plo
+	-rm -f ./$(DEPDIR)/errors.Plo
+	-rm -f ./$(DEPDIR)/fixedpoint.Plo
+	-rm -f ./$(DEPDIR)/helpers.Plo
+	-rm -f atoms/$(DEPDIR)/chassis.Plo
+	-rm -f atoms/$(DEPDIR)/config.Plo
+	-rm -f atoms/$(DEPDIR)/custom.Plo
+	-rm -f atoms/$(DEPDIR)/dot1.Plo
+	-rm -f atoms/$(DEPDIR)/dot3.Plo
+	-rm -f atoms/$(DEPDIR)/interface.Plo
+	-rm -f atoms/$(DEPDIR)/med.Plo
+	-rm -f atoms/$(DEPDIR)/mgmt.Plo
+	-rm -f atoms/$(DEPDIR)/port.Plo
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-includeHEADERS install-pkgconfigDATA
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am: install-libLTLIBRARIES
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+		-rm -f ./$(DEPDIR)/atom-glue.Plo
+	-rm -f ./$(DEPDIR)/atom.Plo
+	-rm -f ./$(DEPDIR)/connection.Plo
+	-rm -f ./$(DEPDIR)/errors.Plo
+	-rm -f ./$(DEPDIR)/fixedpoint.Plo
+	-rm -f ./$(DEPDIR)/helpers.Plo
+	-rm -f atoms/$(DEPDIR)/chassis.Plo
+	-rm -f atoms/$(DEPDIR)/config.Plo
+	-rm -f atoms/$(DEPDIR)/custom.Plo
+	-rm -f atoms/$(DEPDIR)/dot1.Plo
+	-rm -f atoms/$(DEPDIR)/dot3.Plo
+	-rm -f atoms/$(DEPDIR)/interface.Plo
+	-rm -f atoms/$(DEPDIR)/med.Plo
+	-rm -f atoms/$(DEPDIR)/mgmt.Plo
+	-rm -f atoms/$(DEPDIR)/port.Plo
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-includeHEADERS uninstall-libLTLIBRARIES \
+	uninstall-pkgconfigDATA
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-generic clean-libLTLIBRARIES clean-libtool \
+	clean-noinstLTLIBRARIES cscopelist-am ctags ctags-am distclean \
+	distclean-compile distclean-generic distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-includeHEADERS install-info \
+	install-info-am install-libLTLIBRARIES install-man install-pdf \
+	install-pdf-am install-pkgconfigDATA install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags tags-am uninstall uninstall-am \
+	uninstall-includeHEADERS uninstall-libLTLIBRARIES \
+	uninstall-pkgconfigDATA
+
+.PRECIOUS: Makefile
+
+
+atom-glue.c: $(ATOM_FILES) Makefile
+	$(AM_V_GEN)(for f in $(ATOM_FILES:%=$(srcdir)/%); do \
+		$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+		$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) $$f; done | \
+		$(SED) -n 's+^void init_atom_builder_\([^(]*\)(void).*, \([0-9]*\)).*+\2 \1+p' | \
+		sort | \
+		$(AWK) '{ atoms[$$2] = 1 } \
+			 END { for (atom in atoms) { print "void init_atom_builder_"atom"(void);" } \
+			       print "void init_atom_builder(void);"; \
+			       print "void init_atom_builder(void) {"; \
+                               print " static int init = 0; if (init) return; init++;"; \
+			       for (atom in atoms) { print " init_atom_builder_"atom"();" } \
+			       print "}"; }' && \
+		for f in $(ATOM_FILES:%=$(srcdir)/%); do \
+		$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+		$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) $$f; done | \
+		$(SED) -n 's+^void init_atom_map_\([^(]*\)(void).*, \([0-9]*\)).*+\2 \1+p' | \
+		sort -n | \
+		$(AWK) '{ atoms[$$2] = 1 } \
+			 END { for (atom in atoms) { print "void init_atom_map_"atom"(void);" } \
+			       print "void init_atom_map(void);"; \
+			       print "void init_atom_map(void) {"; \
+                               print " static int init = 0; if (init) return; init++;"; \
+			       for (atom in atoms) { print " init_atom_map_"atom"();" } \
+			       print "}"; }' ) \
+		> $@.tmp
+	$(AM_V_at)$(GREP) -q init_atom_builder_ $@.tmp
+	$(AM_V_at)$(GREP) -q init_atom_map_ $@.tmp
+	$(AM_V_at)mv $@.tmp $@
+lldpctl.pc: lldpctl.pc.in
+
+$(TEMPLATES): Makefile
+	$(AM_V_GEN)$(MKDIR_P) $(@D) && $(edit) $(srcdir)/$@.in > $@.tmp && mv $@.tmp $@
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/lib/atom.c b/src/lib/atom.c
new file mode 100644
index 0000000..04011d4
--- /dev/null
+++ b/src/lib/atom.c
@@ -0,0 +1,655 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include "lldpctl.h"
+#include "atom.h"
+#include "../log.h"
+#include "../marshal.h"
+#include "../ctl.h"
+
+lldpctl_conn_t *
+lldpctl_atom_get_connection(lldpctl_atom_t *atom)
+{
+	if (atom) return atom->conn;
+	return NULL;
+}
+
+void
+lldpctl_atom_inc_ref(lldpctl_atom_t *atom)
+{
+	if (atom) atom->count++;
+}
+
+void
+lldpctl_atom_dec_ref(lldpctl_atom_t *atom)
+{
+	struct atom_buffer *buffer, *buffer_next;
+	if (atom && (--atom->count == 0)) {
+		if (atom->free) atom->free(atom);
+
+		/* Remove special allocated buffers */
+		for (buffer = TAILQ_FIRST(&atom->buffers); buffer;
+		     buffer = buffer_next) {
+			buffer_next = TAILQ_NEXT(buffer, next);
+			free(buffer);
+		}
+
+		free(atom);
+	}
+}
+
+lldpctl_atom_t *
+lldpctl_atom_get(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	if (atom == NULL) return NULL;
+	RESET_ERROR(atom->conn);
+
+	if (atom->get == NULL) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+	return atom->get(atom, key);
+}
+
+lldpctl_atom_t *
+lldpctl_atom_set(lldpctl_atom_t *atom, lldpctl_key_t key, lldpctl_atom_t *value)
+{
+	if (atom == NULL) return NULL;
+	RESET_ERROR(atom->conn);
+
+	if (atom->set == NULL) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+	return atom->set(atom, key, value);
+}
+
+const char *
+lldpctl_atom_get_str(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	char *strresult = NULL;
+	const uint8_t *bufresult = NULL;
+	long int intresult = -1;
+	int n1;
+	size_t n2;
+
+	if (atom == NULL) return NULL;
+	RESET_ERROR(atom->conn);
+
+	if (atom->get_str != NULL) {
+		strresult = (char *)atom->get_str(atom, key);
+		if (strresult) return strresult;
+		if (lldpctl_last_error(atom->conn) != LLDPCTL_ERR_NOT_EXIST)
+			return NULL;
+	}
+
+	RESET_ERROR(atom->conn);
+	if (atom->get_int != NULL) {
+		intresult = atom->get_int(atom, key);
+		if (lldpctl_last_error(atom->conn) != LLDPCTL_ERR_NOT_EXIST) {
+			strresult = _lldpctl_alloc_in_atom(atom, 21);
+			if (!strresult) return NULL;
+			n1 = snprintf(strresult, 21, "%ld", intresult);
+			if (n1 > -1 && n1 < 21) return strresult;
+			SET_ERROR(atom->conn,
+			    LLDPCTL_ERR_NOMEM); /* Not really true... */
+			return NULL;
+		}
+	}
+
+	RESET_ERROR(atom->conn);
+	if (atom->get_buffer != NULL) {
+		bufresult = atom->get_buffer(atom, key, &n2);
+		if (bufresult)
+			return _lldpctl_dump_in_atom(atom, bufresult, n2, ' ', 0);
+		if (lldpctl_last_error(atom->conn) != LLDPCTL_ERR_NOT_EXIST)
+			return NULL;
+	}
+
+	SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	return NULL;
+}
+
+lldpctl_atom_t *
+lldpctl_atom_set_str(lldpctl_atom_t *atom, lldpctl_key_t key, const char *value)
+{
+	lldpctl_atom_t *result = NULL;
+	const char *errstr;
+	long long converted = 0;
+	int isint = 0;
+	int bad = 0;
+
+	if (atom == NULL) return NULL;
+	RESET_ERROR(atom->conn);
+
+	if (atom->set_str != NULL) {
+		result = atom->set_str(atom, key, value);
+		if (result) return result;
+		if (lldpctl_last_error(atom->conn) != LLDPCTL_ERR_NOT_EXIST &&
+		    lldpctl_last_error(atom->conn) != LLDPCTL_ERR_BAD_VALUE)
+			return NULL;
+		bad = bad || (lldpctl_last_error(atom->conn) == LLDPCTL_ERR_BAD_VALUE);
+	}
+
+	if (value) {
+		converted = strtonum(value, LLONG_MIN, LLONG_MAX, &errstr);
+		isint = (errstr == NULL);
+	}
+
+	RESET_ERROR(atom->conn);
+	if (atom->set_int != NULL && isint) {
+		result = atom->set_int(atom, key, converted);
+		if (result) return result;
+		if (lldpctl_last_error(atom->conn) != LLDPCTL_ERR_NOT_EXIST &&
+		    lldpctl_last_error(atom->conn) != LLDPCTL_ERR_BAD_VALUE)
+			return NULL;
+		bad = bad || (lldpctl_last_error(atom->conn) == LLDPCTL_ERR_BAD_VALUE);
+	}
+
+	RESET_ERROR(atom->conn);
+	if (atom->set_buffer != NULL) {
+		result = atom->set_buffer(atom, key, (u_int8_t *)value,
+		    value ? strlen(value) : 0);
+		if (result) return result;
+		if (lldpctl_last_error(atom->conn) != LLDPCTL_ERR_NOT_EXIST &&
+		    lldpctl_last_error(atom->conn) != LLDPCTL_ERR_BAD_VALUE)
+			return NULL;
+		bad = bad || (lldpctl_last_error(atom->conn) == LLDPCTL_ERR_BAD_VALUE);
+	}
+
+	SET_ERROR(atom->conn, bad ? LLDPCTL_ERR_BAD_VALUE : LLDPCTL_ERR_NOT_EXIST);
+	return NULL;
+}
+
+const u_int8_t *
+lldpctl_atom_get_buffer(lldpctl_atom_t *atom, lldpctl_key_t key, size_t *length)
+{
+	if (atom == NULL) return NULL;
+	RESET_ERROR(atom->conn);
+
+	if (atom->get_buffer == NULL) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+	return atom->get_buffer(atom, key, length);
+}
+
+lldpctl_atom_t *
+lldpctl_atom_set_buffer(lldpctl_atom_t *atom, lldpctl_key_t key, const u_int8_t *value,
+    size_t length)
+{
+	if (atom == NULL) return NULL;
+	RESET_ERROR(atom->conn);
+
+	if (atom->set_buffer == NULL) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+	return atom->set_buffer(atom, key, value, length);
+}
+
+long int
+lldpctl_atom_get_int(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	if (atom == NULL) return LLDPCTL_ERR_NOT_EXIST;
+	RESET_ERROR(atom->conn);
+
+	if (atom->get_int == NULL) return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	return atom->get_int(atom, key);
+}
+
+lldpctl_atom_t *
+lldpctl_atom_set_int(lldpctl_atom_t *atom, lldpctl_key_t key, long int value)
+{
+	if (atom == NULL) return NULL;
+	RESET_ERROR(atom->conn);
+
+	if (atom->set_int == NULL) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+	return atom->set_int(atom, key, value);
+}
+
+lldpctl_atom_iter_t *
+lldpctl_atom_iter(lldpctl_atom_t *atom)
+{
+	if (atom == NULL) return NULL;
+	RESET_ERROR(atom->conn);
+
+	if (!atom->iter) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_CANNOT_ITERATE);
+		return NULL;
+	}
+	return atom->iter(atom);
+}
+
+lldpctl_atom_iter_t *
+lldpctl_atom_iter_next(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	if (atom == NULL) return NULL;
+	RESET_ERROR(atom->conn);
+
+	if (!atom->next) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_CANNOT_ITERATE);
+		return NULL;
+	}
+	return atom->next(atom, iter);
+}
+
+lldpctl_atom_t *
+lldpctl_atom_iter_value(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	if (atom == NULL) return NULL;
+	RESET_ERROR(atom->conn);
+
+	if (!atom->value) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_CANNOT_ITERATE);
+		return NULL;
+	}
+	return atom->value(atom, iter);
+}
+
+lldpctl_atom_t *
+lldpctl_atom_create(lldpctl_atom_t *atom)
+{
+	if (atom == NULL) return NULL;
+	RESET_ERROR(atom->conn);
+
+	if (!atom->create) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_CANNOT_CREATE);
+		return NULL;
+	}
+	return atom->create(atom);
+}
+
+/**
+ * Get somethin with IO.
+ *
+ * @param conn       The connection to lldpd.
+ * @param state_send State to be when "sending"
+ * @param state_recv State to be when "receiving"
+ * @param state_data Ancillary data for state handling
+ * @param type       Type of message to send (and receive)
+ * @param to_send    Data to send.
+ * @param mi_send    Marshalling info for data to send.
+ * @param to_recv    Data to receive.
+ * @param mi_recv    Marshalling info for data to recive.
+ * @return 0 in case of success, a negative integer in case of failure.
+ *
+ * The current state must match one of @c CONN_STATE_IDLE, @c state_send or @c
+ * state_recv and in the two later cases, the provided @c state_data must match.
+ */
+int
+_lldpctl_do_something(lldpctl_conn_t *conn, int state_send, int state_recv,
+    const char *state_data, enum hmsg_type type, void *to_send,
+    struct marshal_info *mi_send, void **to_recv, struct marshal_info *mi_recv)
+{
+	ssize_t rc;
+
+	if (conn->state == CONN_STATE_WATCHING)
+		/* The connection cannot be used anymore. */
+		return SET_ERROR(conn, LLDPCTL_ERR_INVALID_STATE);
+
+	if (conn->state == CONN_STATE_IDLE) {
+		/* We need to build the message to send, then send
+		 * it. */
+		if (ctl_msg_send_unserialized(&conn->output_buffer,
+			&conn->output_buffer_len, type, to_send, mi_send) != 0)
+			return SET_ERROR(conn, LLDPCTL_ERR_SERIALIZATION);
+		conn->state = state_send;
+		if (state_data)
+			strlcpy(conn->state_data, state_data, sizeof(conn->state_data));
+		else
+			conn->state_data[0] = 0;
+	}
+	if (conn->state == state_send &&
+	    (state_data == NULL ||
+		!strncmp(conn->state_data, state_data, sizeof(conn->state_data) - 1))) {
+		/* We need to send the currently built message */
+		rc = lldpctl_send(conn);
+		if (rc < 0) return SET_ERROR(conn, rc);
+		conn->state = state_recv;
+	}
+	if (conn->state == state_recv &&
+	    (state_data == NULL ||
+		!strncmp(conn->state_data, state_data, sizeof(conn->state_data) - 1))) {
+		/* We need to receive the answer */
+		while ((rc = ctl_msg_recv_unserialized(&conn->input_buffer,
+			    &conn->input_buffer_len, type, to_recv, mi_recv)) > 0) {
+			/* We need more bytes */
+			rc = _lldpctl_needs(conn, rc);
+			if (rc < 0) return SET_ERROR(conn, rc);
+		}
+		if (rc < 0) return SET_ERROR(conn, LLDPCTL_ERR_SERIALIZATION);
+		/* rc == 0 */
+		conn->state = CONN_STATE_IDLE;
+		conn->state_data[0] = 0;
+		return 0;
+	} else
+		return SET_ERROR(conn, LLDPCTL_ERR_INVALID_STATE);
+}
+
+int
+lldpctl_watch_callback(lldpctl_conn_t *conn, lldpctl_change_callback cb, void *data)
+{
+	int rc;
+
+	RESET_ERROR(conn);
+
+	rc = _lldpctl_do_something(conn, CONN_STATE_SET_WATCH_SEND,
+	    CONN_STATE_SET_WATCH_RECV, NULL, SUBSCRIBE, NULL, NULL, NULL, NULL);
+	if (rc == 0) {
+		conn->watch_cb = cb;
+		conn->watch_data = data;
+		conn->state = CONN_STATE_WATCHING;
+	}
+	return rc;
+}
+
+int
+lldpctl_watch_callback2(lldpctl_conn_t *conn, lldpctl_change_callback2 cb, void *data)
+{
+	int rc;
+
+	RESET_ERROR(conn);
+
+	rc = _lldpctl_do_something(conn, CONN_STATE_SET_WATCH_SEND,
+	    CONN_STATE_SET_WATCH_RECV, NULL, SUBSCRIBE, NULL, NULL, NULL, NULL);
+	if (rc == 0) {
+		conn->watch_cb2 = cb;
+		conn->watch_data = data;
+		conn->state = CONN_STATE_WATCHING;
+	}
+	return rc;
+}
+
+int
+lldpctl_watch(lldpctl_conn_t *conn)
+{
+	int rc = 0;
+
+	RESET_ERROR(conn);
+
+	if (conn->state != CONN_STATE_WATCHING)
+		return SET_ERROR(conn, LLDPCTL_ERR_INVALID_STATE);
+
+	conn->watch_triggered = 0;
+	while (!conn->watch_triggered) {
+		rc = _lldpctl_needs(conn, 1);
+		if (rc < 0) return SET_ERROR(conn, rc);
+	}
+
+	RESET_ERROR(conn);
+	return 0;
+}
+
+lldpctl_atom_t *
+lldpctl_get_configuration(lldpctl_conn_t *conn)
+{
+	int rc;
+	struct lldpd_config *config;
+	void *p;
+
+	RESET_ERROR(conn);
+
+	rc = _lldpctl_do_something(conn, CONN_STATE_GET_CONFIG_SEND,
+	    CONN_STATE_GET_CONFIG_RECV, NULL, GET_CONFIG, NULL, NULL, &p,
+	    &MARSHAL_INFO(lldpd_config));
+	if (rc == 0) {
+		config = p;
+		return _lldpctl_new_atom(conn, atom_config, config);
+	}
+	return NULL;
+}
+
+lldpctl_atom_t *
+lldpctl_get_interfaces(lldpctl_conn_t *conn)
+{
+	struct lldpd_interface_list *ifs;
+	void *p;
+	int rc;
+
+	RESET_ERROR(conn);
+
+	rc = _lldpctl_do_something(conn, CONN_STATE_GET_INTERFACES_SEND,
+	    CONN_STATE_GET_INTERFACES_RECV, NULL, GET_INTERFACES, NULL, NULL, &p,
+	    &MARSHAL_INFO(lldpd_interface_list));
+	if (rc == 0) {
+		ifs = p;
+		return _lldpctl_new_atom(conn, atom_interfaces_list, ifs);
+	}
+	return NULL;
+}
+
+lldpctl_atom_t *
+lldpctl_get_local_chassis(lldpctl_conn_t *conn)
+{
+	struct lldpd_chassis *chassis;
+	void *p;
+	int rc;
+
+	RESET_ERROR(conn);
+
+	rc = _lldpctl_do_something(conn, CONN_STATE_GET_CHASSIS_SEND,
+	    CONN_STATE_GET_CHASSIS_RECV, NULL, GET_CHASSIS, NULL, NULL, &p,
+	    &MARSHAL_INFO(lldpd_chassis));
+	if (rc == 0) {
+		chassis = p;
+		return _lldpctl_new_atom(conn, atom_chassis, chassis, NULL, 0);
+	}
+	return NULL;
+}
+
+lldpctl_atom_t *
+lldpctl_get_port(lldpctl_atom_t *atom)
+{
+	int rc;
+	lldpctl_conn_t *conn = atom->conn;
+	struct lldpd_hardware *hardware;
+	void *p;
+	struct _lldpctl_atom_interface_t *iface =
+	    (struct _lldpctl_atom_interface_t *)atom;
+
+	RESET_ERROR(conn);
+
+	if (atom->type != atom_interface) {
+		SET_ERROR(conn, LLDPCTL_ERR_INCORRECT_ATOM_TYPE);
+		return NULL;
+	}
+	rc = _lldpctl_do_something(conn, CONN_STATE_GET_PORT_SEND,
+	    CONN_STATE_GET_PORT_RECV, iface->name, GET_INTERFACE, (void *)iface->name,
+	    &MARSHAL_INFO(string), &p, &MARSHAL_INFO(lldpd_hardware));
+	if (rc == 0) {
+		hardware = p;
+		return _lldpctl_new_atom(conn, atom_port, 1, hardware,
+		    &hardware->h_lport, NULL);
+	}
+	return NULL;
+}
+
+lldpctl_atom_t *
+lldpctl_get_default_port(lldpctl_conn_t *conn)
+{
+	struct lldpd_port *port;
+	void *p;
+	int rc;
+
+	RESET_ERROR(conn);
+
+	rc = _lldpctl_do_something(conn, CONN_STATE_GET_DEFAULT_PORT_SEND,
+	    CONN_STATE_GET_DEFAULT_PORT_RECV, "", GET_DEFAULT_PORT, NULL, NULL, &p,
+	    &MARSHAL_INFO(lldpd_port));
+	if (rc == 0) {
+		port = p;
+		return _lldpctl_new_atom(conn, atom_port, 1, NULL, port, NULL);
+	}
+	return NULL;
+}
+
+static lldpctl_map_t empty_map[] = { { 0, NULL } };
+
+static struct atom_map atom_map_list = { .next = NULL };
+
+lldpctl_map_t *
+lldpctl_key_get_map(lldpctl_key_t key)
+{
+	init_atom_map();
+	struct atom_map *map;
+	for (map = atom_map_list.next; map; map = map->next) {
+		if (map->key == key) return map->map;
+	}
+	return empty_map;
+}
+
+void
+atom_map_register(struct atom_map *map, int prio)
+{
+	(void)prio;
+	struct atom_map *iter = &atom_map_list;
+
+	while (iter->next)
+		iter = iter->next;
+
+	iter->next = map;
+}
+
+static struct atom_builder atom_builder_list = { .nextb = NULL };
+
+void
+atom_builder_register(struct atom_builder *builder, int prio)
+{
+	(void)prio;
+	struct atom_builder *iter = &atom_builder_list;
+
+	while (iter->nextb)
+		iter = iter->nextb;
+
+	iter->nextb = builder;
+}
+
+lldpctl_atom_t *
+_lldpctl_new_atom(lldpctl_conn_t *conn, atom_t type, ...)
+{
+	init_atom_builder();
+	struct atom_builder *builder;
+	struct lldpctl_atom_t *atom;
+	va_list(ap);
+	for (builder = atom_builder_list.nextb; builder; builder = builder->nextb) {
+		if (builder->type != type) continue;
+		atom = calloc(1, builder->size);
+		if (atom == NULL) {
+			SET_ERROR(conn, LLDPCTL_ERR_NOMEM);
+			return NULL;
+		}
+		atom->count = 1;
+		atom->type = type;
+		atom->conn = conn;
+		TAILQ_INIT(&atom->buffers);
+		atom->free = builder->free;
+
+		atom->iter = builder->iter;
+		atom->next = builder->next;
+		atom->value = builder->value;
+
+		atom->get = builder->get;
+		atom->get_str = builder->get_str;
+		atom->get_buffer = builder->get_buffer;
+		atom->get_int = builder->get_int;
+
+		atom->set = builder->set;
+		atom->set_str = builder->set_str;
+		atom->set_buffer = builder->set_buffer;
+		atom->set_int = builder->set_int;
+		atom->create = builder->create;
+
+		va_start(ap, type);
+		if (builder->init && builder->init(atom, ap) == 0) {
+			free(atom);
+			va_end(ap);
+			/* Error to be set in init() */
+			return NULL;
+		}
+		va_end(ap);
+		return atom;
+	}
+	log_warnx("rpc", "unknown atom type: %d", type);
+	SET_ERROR(conn, LLDPCTL_ERR_FATAL);
+	return NULL;
+}
+
+/**
+ * Allocate a buffer inside an atom.
+ *
+ * It will be freed automatically when the atom is released. This buffer cannot
+ * be reallocated and should not be freed!
+ *
+ * @param atom Atom which will be used as a container.
+ * @param size Size of the allocated area.
+ * @return Pointer to the buffer or @c NULL if allocation fails.
+ */
+void *
+_lldpctl_alloc_in_atom(lldpctl_atom_t *atom, size_t size)
+{
+	struct atom_buffer *buffer;
+
+	if ((buffer = calloc(1, size + sizeof(struct atom_buffer))) == NULL) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+		return NULL;
+	}
+	TAILQ_INSERT_TAIL(&atom->buffers, buffer, next);
+	return &buffer->data[0];
+}
+
+/**
+ * Allocate a buffer inside an atom and dump another buffer in it.
+ *
+ * The dump is done in hexadecimal with the provided separator.
+ *
+ * @param atom   Atom which will be used as a container.
+ * @param input  Buffer we want to dump.
+ * @param size   Size of the buffer
+ * @param sep    Separator to use.
+ * @param max    Maximum number of bytes to dump. Can be 0 if no maximum.
+ * @return A string representing the dump of the buffer or @c NULL if error.
+ */
+const char *
+_lldpctl_dump_in_atom(lldpctl_atom_t *atom, const uint8_t *input, size_t size, char sep,
+    size_t max)
+{
+	static const char truncation[] = "[...]";
+	size_t i, len;
+	char *buffer = NULL;
+
+	if (max > 0 && size > max)
+		len = max * 3 + sizeof(truncation) + 1;
+	else
+		len = size * 3 + 1;
+
+	if ((buffer = _lldpctl_alloc_in_atom(atom, len)) == NULL) return NULL;
+
+	for (i = 0; (i < size) && (max == 0 || i < max); i++)
+		snprintf(buffer + i * 3, 4, "%02x%c", *(u_int8_t *)(input + i), sep);
+	if (max > 0 && size > max)
+		snprintf(buffer + i * 3, sizeof(truncation) + 1, "%s", truncation);
+	else
+		*(buffer + i * 3 - 1) = 0;
+	return buffer;
+}
diff --git a/src/lib/atom.h b/src/lib/atom.h
new file mode 100644
index 0000000..0dfc85b
--- /dev/null
+++ b/src/lib/atom.h
@@ -0,0 +1,344 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/queue.h>
+#include "../lldpd-structs.h"
+#include "../compat/compat.h"
+#include "../marshal.h"
+#include "../ctl.h"
+
+/* connection.c */
+struct lldpctl_conn_t {
+	/* the Unix-domain socket to connect to lldpd */
+	char *ctlname;
+
+	/* Callback handling */
+	lldpctl_recv_callback recv; /* Receive callback */
+	lldpctl_send_callback send; /* Send callback */
+	void *user_data;	    /* Callback user data */
+
+	/* IO state handling. */
+	uint8_t *input_buffer;	/* Current input/output buffer */
+	uint8_t *output_buffer; /* Current input/output buffer */
+	size_t input_buffer_len;
+	size_t output_buffer_len;
+
+#define CONN_STATE_IDLE 0
+#define CONN_STATE_GET_INTERFACES_SEND 1
+#define CONN_STATE_GET_INTERFACES_RECV 2
+#define CONN_STATE_GET_PORT_SEND 3
+#define CONN_STATE_GET_PORT_RECV 4
+#define CONN_STATE_SET_PORT_SEND 5
+#define CONN_STATE_SET_PORT_RECV 6
+#define CONN_STATE_SET_WATCH_SEND 7
+#define CONN_STATE_SET_WATCH_RECV 8
+#define CONN_STATE_GET_CONFIG_SEND 9
+#define CONN_STATE_GET_CONFIG_RECV 10
+#define CONN_STATE_SET_CONFIG_SEND 11
+#define CONN_STATE_SET_CONFIG_RECV 12
+#define CONN_STATE_GET_CHASSIS_SEND 13
+#define CONN_STATE_GET_CHASSIS_RECV 14
+#define CONN_STATE_GET_DEFAULT_PORT_SEND 15
+#define CONN_STATE_GET_DEFAULT_PORT_RECV 16
+#define CONN_STATE_WATCHING 17
+#define CONN_STATE_SET_CHASSIS_SEND 18
+#define CONN_STATE_SET_CHASSIS_RECV 19
+
+	int state; /* Current state */
+	/* Data attached to the state. It is used to check that we are using the
+	 * same data as a previous call until the state machine goes to
+	 * CONN_STATE_IDLE. */
+	char state_data[IFNAMSIZ + 64];
+	/* Error handling */
+	lldpctl_error_t error; /* Last error */
+
+	/* Handling notifications */
+	lldpctl_change_callback watch_cb;
+	lldpctl_change_callback2 watch_cb2;
+	void *watch_data;
+	int watch_triggered;
+};
+
+/* User data for synchronous callbacks. */
+struct lldpctl_conn_sync_t {
+	int fd; /* File descriptor to the socket. */
+};
+
+ssize_t _lldpctl_needs(lldpctl_conn_t *lldpctl, size_t length);
+int _lldpctl_do_something(lldpctl_conn_t *conn, int state_send, int state_recv,
+    const char *state_data, enum hmsg_type type, void *to_send,
+    struct marshal_info *mi_send, void **to_recv, struct marshal_info *mi_recv);
+
+/* errors.c */
+#define SET_ERROR(conn, x) ((conn)->error = x)
+#define RESET_ERROR(conn) SET_ERROR((conn), LLDPCTL_NO_ERROR)
+
+/* atom.c and atom-private.c */
+typedef enum {
+	atom_config,
+	atom_interfaces_list,
+	atom_interface,
+	atom_ports_list,
+	atom_port,
+	atom_mgmts_list,
+	atom_mgmt,
+#ifdef ENABLE_DOT3
+	atom_dot3_power,
+#endif
+#ifdef ENABLE_DOT1
+	atom_vlans_list,
+	atom_vlan,
+	atom_ppvids_list,
+	atom_ppvid,
+	atom_pis_list,
+	atom_pi,
+#endif
+#ifdef ENABLE_LLDPMED
+	atom_med_policies_list,
+	atom_med_policy,
+	atom_med_locations_list,
+	atom_med_location,
+	atom_med_caelements_list,
+	atom_med_caelement,
+	atom_med_power,
+#endif
+#ifdef ENABLE_CUSTOM
+	atom_custom_list,
+	atom_custom,
+#endif
+	atom_chassis,
+} atom_t;
+
+void *_lldpctl_alloc_in_atom(lldpctl_atom_t *, size_t);
+const char *_lldpctl_dump_in_atom(lldpctl_atom_t *, const uint8_t *, size_t, char,
+    size_t);
+
+struct atom_buffer {
+	TAILQ_ENTRY(atom_buffer) next;
+	u_int8_t data[0];
+};
+
+struct lldpctl_atom_t {
+	int count;
+	atom_t type;
+	lldpctl_conn_t *conn;
+	TAILQ_HEAD(, atom_buffer) buffers; /* List of buffers */
+
+	/* Destructor */
+	void (*free)(lldpctl_atom_t *);
+
+	/* Iterators */
+	lldpctl_atom_iter_t *(*iter)(lldpctl_atom_t *);
+	lldpctl_atom_iter_t *(*next)(lldpctl_atom_t *, lldpctl_atom_iter_t *);
+	lldpctl_atom_t *(*value)(lldpctl_atom_t *, lldpctl_atom_iter_t *);
+
+	/* Getters */
+	lldpctl_atom_t *(*get)(lldpctl_atom_t *, lldpctl_key_t);
+	const char *(*get_str)(lldpctl_atom_t *, lldpctl_key_t);
+	const u_int8_t *(*get_buffer)(lldpctl_atom_t *, lldpctl_key_t, size_t *);
+	long int (*get_int)(lldpctl_atom_t *, lldpctl_key_t);
+
+	/* Setters */
+	lldpctl_atom_t *(*set)(lldpctl_atom_t *, lldpctl_key_t, lldpctl_atom_t *);
+	lldpctl_atom_t *(*set_str)(lldpctl_atom_t *, lldpctl_key_t, const char *);
+	lldpctl_atom_t *(
+	    *set_buffer)(lldpctl_atom_t *, lldpctl_key_t, const u_int8_t *, size_t);
+	lldpctl_atom_t *(*set_int)(lldpctl_atom_t *, lldpctl_key_t, long int);
+	lldpctl_atom_t *(*create)(lldpctl_atom_t *);
+};
+
+struct _lldpctl_atom_config_t {
+	lldpctl_atom_t base;
+	struct lldpd_config *config;
+};
+
+struct _lldpctl_atom_interfaces_list_t {
+	lldpctl_atom_t base;
+	struct lldpd_interface_list *ifs;
+};
+
+struct _lldpctl_atom_interface_t {
+	lldpctl_atom_t base;
+	char *name;
+};
+
+struct _lldpctl_atom_chassis_t {
+	lldpctl_atom_t base;
+	struct lldpd_chassis *chassis;
+	struct _lldpctl_atom_port_t
+	    *parent;  /* Optional: parent of this atom (owning our reference) */
+	int embedded; /* This atom is "embedded" (not refcounted) */
+};
+
+struct _lldpctl_atom_port_t {
+	lldpctl_atom_t base;
+	int local;			     /* Local or remote port? */
+	struct lldpd_hardware *hardware;     /* Local port only (but optional) */
+	struct lldpd_port *port;	     /* Local and remote */
+	struct _lldpctl_atom_port_t *parent; /* Local port if we are a remote port */
+	lldpctl_atom_t *chassis;	     /* Internal atom for chassis */
+};
+
+/* Can represent any simple list holding just a reference to a port. */
+struct _lldpctl_atom_any_list_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_port_t *parent;
+};
+
+struct _lldpctl_atom_mgmts_list_t {
+	lldpctl_atom_t base;
+	lldpctl_atom_t *parent;
+	struct lldpd_chassis *chassis; /* Chassis containing the list of IP addresses */
+};
+
+struct _lldpctl_atom_mgmt_t {
+	lldpctl_atom_t base;
+	lldpctl_atom_t *parent;
+	struct lldpd_mgmt *mgmt;
+};
+
+#ifdef ENABLE_DOT3
+struct _lldpctl_atom_dot3_power_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_port_t *parent;
+};
+#endif
+
+#ifdef ENABLE_DOT1
+struct _lldpctl_atom_vlan_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_port_t *parent;
+	struct lldpd_vlan *vlan;
+};
+
+struct _lldpctl_atom_ppvid_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_port_t *parent;
+	struct lldpd_ppvid *ppvid;
+};
+
+struct _lldpctl_atom_pi_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_port_t *parent;
+	struct lldpd_pi *pi;
+};
+#endif
+
+#ifdef ENABLE_LLDPMED
+struct _lldpctl_atom_med_policy_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_port_t *parent;
+	struct lldpd_med_policy *policy;
+};
+
+struct _lldpctl_atom_med_location_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_port_t *parent;
+	struct lldpd_med_loc *location;
+};
+
+/* This list should have the same structure than _llpdctl_atom_any_list_t */
+struct _lldpctl_atom_med_caelements_list_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_med_location_t *parent;
+};
+
+struct _lldpctl_atom_med_caelement_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_med_location_t *parent;
+	int type;
+	uint8_t *value;
+	size_t len;
+};
+
+struct _lldpctl_atom_med_power_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_port_t *parent;
+};
+#endif
+
+#ifdef ENABLE_CUSTOM
+struct _lldpctl_atom_custom_list_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_port_t *parent;
+	struct lldpd_custom_list *list;
+};
+
+struct _lldpctl_atom_custom_t {
+	lldpctl_atom_t base;
+	struct _lldpctl_atom_port_t *parent;
+	int op;
+	struct lldpd_custom *tlv;
+};
+#endif
+
+struct lldpctl_atom_t *_lldpctl_new_atom(lldpctl_conn_t *conn, atom_t type, ...);
+
+struct atom_map {
+	int key;
+	struct atom_map *next;
+	lldpctl_map_t map[];
+};
+
+void atom_map_register(struct atom_map *map, int);
+void init_atom_map(void);
+
+#define ATOM_MAP_REGISTER(NAME, PRIO) \
+  void init_atom_map_##NAME(void);    \
+  void init_atom_map_##NAME(void)     \
+  {                                   \
+    atom_map_register(&NAME, PRIO);   \
+  }
+
+struct atom_builder {
+	atom_t type;				/* Atom type */
+	size_t size;				/* Size of structure to allocate */
+	int (*init)(lldpctl_atom_t *, va_list); /* Optional additional init steps */
+	void (*free)(lldpctl_atom_t *);		/* Optional deallocation steps */
+
+	lldpctl_atom_iter_t *(*iter)(
+	    lldpctl_atom_t *); /* Optional, return an iterator for this object */
+	lldpctl_atom_iter_t *(*next)(lldpctl_atom_t *,
+	    lldpctl_atom_iter_t
+		*); /* Return the next object for the provided iterator */
+	lldpctl_atom_t *(*value)(lldpctl_atom_t *,
+	    lldpctl_atom_iter_t
+		*); /* Return the current object for the provided iterator */
+
+	lldpctl_atom_t *(*get)(lldpctl_atom_t *, lldpctl_key_t);
+	const char *(*get_str)(lldpctl_atom_t *, lldpctl_key_t);
+	const u_int8_t *(*get_buffer)(lldpctl_atom_t *, lldpctl_key_t, size_t *);
+	long int (*get_int)(lldpctl_atom_t *, lldpctl_key_t);
+
+	lldpctl_atom_t *(*set)(lldpctl_atom_t *, lldpctl_key_t, lldpctl_atom_t *);
+	lldpctl_atom_t *(*set_str)(lldpctl_atom_t *, lldpctl_key_t, const char *);
+	lldpctl_atom_t *(
+	    *set_buffer)(lldpctl_atom_t *, lldpctl_key_t, const u_int8_t *, size_t);
+	lldpctl_atom_t *(*set_int)(lldpctl_atom_t *, lldpctl_key_t, long int);
+	lldpctl_atom_t *(*create)(lldpctl_atom_t *);
+	struct atom_builder *nextb;
+};
+
+void atom_builder_register(struct atom_builder *builder, int);
+void init_atom_builder(void);
+
+#define ATOM_BUILDER_REGISTER(NAME, PRIO) \
+  void init_atom_builder_##NAME(void);    \
+  void init_atom_builder_##NAME(void)     \
+  {                                       \
+    atom_builder_register(&NAME, PRIO);   \
+  }
diff --git a/src/lib/atoms/chassis.c b/src/lib/atoms/chassis.c
new file mode 100644
index 0000000..4d195f7
--- /dev/null
+++ b/src/lib/atoms/chassis.c
@@ -0,0 +1,326 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2015 Vincent Bernat <vincent@bernat.im>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "../lldpctl.h"
+#include "../../log.h"
+#include "../atom.h"
+#include "../helpers.h"
+
+static lldpctl_map_t chassis_id_subtype_map[] = {
+	{ LLDP_CHASSISID_SUBTYPE_IFNAME, "ifname" },
+	{ LLDP_CHASSISID_SUBTYPE_IFALIAS, "ifalias" },
+	{ LLDP_CHASSISID_SUBTYPE_LOCAL, "local" },
+	{ LLDP_CHASSISID_SUBTYPE_LLADDR, "mac" },
+	{ LLDP_CHASSISID_SUBTYPE_ADDR, "ip" },
+	{ LLDP_CHASSISID_SUBTYPE_PORT, "unhandled" },
+	{ LLDP_CHASSISID_SUBTYPE_CHASSIS, "unhandled" },
+	{ 0, NULL },
+};
+
+#ifdef ENABLE_LLDPMED
+
+static lldpctl_map_t chassis_med_type_map[] = {
+	{ LLDP_MED_CLASS_I, "Generic Endpoint (Class I)" },
+	{ LLDP_MED_CLASS_II, "Media Endpoint (Class II)" },
+	{ LLDP_MED_CLASS_III, "Communication Device Endpoint (Class III)" },
+	{ LLDP_MED_NETWORK_DEVICE, "Network Connectivity Device" },
+	{ 0, NULL },
+};
+
+#endif
+
+static int
+_lldpctl_atom_new_chassis(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_chassis_t *p = (struct _lldpctl_atom_chassis_t *)atom;
+	p->chassis = va_arg(ap, struct lldpd_chassis *);
+	p->parent = va_arg(ap, struct _lldpctl_atom_port_t *);
+	p->embedded = va_arg(ap, int);
+	if (p->parent && !p->embedded)
+		lldpctl_atom_inc_ref((lldpctl_atom_t *)p->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_chassis(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_chassis_t *p = (struct _lldpctl_atom_chassis_t *)atom;
+	/* When we have a parent, the chassis structure is in fact part of the
+	 * parent, just decrement the reference count of the parent. Otherwise,
+	 * we need to free the whole chassis. When embedded, we don't alter the
+	 * reference count of the parent. Therefore, it's important to also not
+	 * increase the reference count of this atom. See
+	 * `_lldpctl_atom_get_atom_chassis' for how to handle that. */
+	if (p->parent) {
+		if (!p->embedded) lldpctl_atom_dec_ref((lldpctl_atom_t *)p->parent);
+	} else
+		lldpd_chassis_cleanup(p->chassis, 1);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_get_atom_chassis(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_chassis_t *p = (struct _lldpctl_atom_chassis_t *)atom;
+	struct lldpd_chassis *chassis = p->chassis;
+
+	switch (key) {
+	case lldpctl_k_chassis_mgmt:
+		return _lldpctl_new_atom(atom->conn, atom_mgmts_list,
+		    (p->parent && p->embedded) ? (lldpctl_atom_t *)p->parent :
+						 (lldpctl_atom_t *)p,
+		    chassis);
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+#ifdef ENABLE_LLDPMED
+static lldpctl_atom_t *
+_lldpctl_atom_set_str_chassis(lldpctl_atom_t *atom, lldpctl_key_t key,
+    const char *value)
+{
+	struct _lldpctl_atom_chassis_t *p = (struct _lldpctl_atom_chassis_t *)atom;
+	struct lldpd_chassis *chassis = p->chassis;
+
+	char *canary = NULL;
+
+	int rc;
+
+	switch (key) {
+	case lldpctl_k_chassis_med_inventory_hw:
+		free(chassis->c_med_hw);
+		chassis->c_med_hw = xstrdup(value);
+		break;
+	case lldpctl_k_chassis_med_inventory_sw:
+		free(chassis->c_med_sw);
+		chassis->c_med_sw = xstrdup(value);
+		break;
+	case lldpctl_k_chassis_med_inventory_fw:
+		free(chassis->c_med_fw);
+		chassis->c_med_fw = xstrdup(value);
+		break;
+	case lldpctl_k_chassis_med_inventory_sn:
+		free(chassis->c_med_sn);
+		chassis->c_med_sn = xstrdup(value);
+		break;
+	case lldpctl_k_chassis_med_inventory_manuf:
+		free(chassis->c_med_manuf);
+		chassis->c_med_manuf = xstrdup(value);
+		break;
+	case lldpctl_k_chassis_med_inventory_model:
+		free(chassis->c_med_model);
+		chassis->c_med_model = xstrdup(value);
+		break;
+	case lldpctl_k_chassis_med_inventory_asset:
+		free(chassis->c_med_asset);
+		chassis->c_med_asset = xstrdup(value);
+		break;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	if (asprintf(&canary, "%d%s", key, value ? value : "(NULL)") == -1) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+		return NULL;
+	}
+
+	rc = _lldpctl_do_something(atom->conn, CONN_STATE_SET_CHASSIS_SEND,
+	    CONN_STATE_SET_CHASSIS_RECV, canary, SET_CHASSIS, chassis,
+	    &MARSHAL_INFO(lldpd_chassis), NULL, NULL);
+
+	free(canary);
+	if (rc == 0) return atom;
+	return NULL;
+}
+#endif /* ENABLE_LLDPMED */
+
+static const char *
+_lldpctl_atom_get_str_chassis(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_chassis_t *p = (struct _lldpctl_atom_chassis_t *)atom;
+	struct lldpd_chassis *chassis = p->chassis;
+	char *ipaddress = NULL;
+	size_t len;
+
+	/* Local and remote port */
+	switch (key) {
+
+	case lldpctl_k_chassis_id_subtype:
+		return map_lookup(chassis_id_subtype_map, chassis->c_id_subtype);
+	case lldpctl_k_chassis_id:
+		switch (chassis->c_id_subtype) {
+		case LLDP_CHASSISID_SUBTYPE_IFNAME:
+		case LLDP_CHASSISID_SUBTYPE_IFALIAS:
+		case LLDP_CHASSISID_SUBTYPE_LOCAL:
+			return chassis->c_id;
+		case LLDP_CHASSISID_SUBTYPE_LLADDR:
+			return _lldpctl_dump_in_atom(atom, (uint8_t *)chassis->c_id,
+			    chassis->c_id_len, ':', 0);
+		case LLDP_CHASSISID_SUBTYPE_ADDR:
+			switch (chassis->c_id[0]) {
+			case LLDP_MGMT_ADDR_IP4:
+				len = INET_ADDRSTRLEN + 1;
+				break;
+			case LLDP_MGMT_ADDR_IP6:
+				len = INET6_ADDRSTRLEN + 1;
+				break;
+			default:
+				len = 0;
+			}
+			if (len > 0) {
+				ipaddress = _lldpctl_alloc_in_atom(atom, len);
+				if (!ipaddress) return NULL;
+				if (inet_ntop((chassis->c_id[0] == LLDP_MGMT_ADDR_IP4) ?
+					    AF_INET :
+					    AF_INET6,
+					&chassis->c_id[1], ipaddress, len) == NULL)
+					break;
+				return ipaddress;
+			}
+			break;
+		}
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	case lldpctl_k_chassis_name:
+		return chassis->c_name;
+	case lldpctl_k_chassis_descr:
+		return chassis->c_descr;
+
+#ifdef ENABLE_LLDPMED
+	case lldpctl_k_chassis_med_type:
+		return map_lookup(chassis_med_type_map, chassis->c_med_type);
+	case lldpctl_k_chassis_med_inventory_hw:
+		return chassis->c_med_hw;
+	case lldpctl_k_chassis_med_inventory_sw:
+		return chassis->c_med_sw;
+	case lldpctl_k_chassis_med_inventory_fw:
+		return chassis->c_med_fw;
+	case lldpctl_k_chassis_med_inventory_sn:
+		return chassis->c_med_sn;
+	case lldpctl_k_chassis_med_inventory_manuf:
+		return chassis->c_med_manuf;
+	case lldpctl_k_chassis_med_inventory_model:
+		return chassis->c_med_model;
+	case lldpctl_k_chassis_med_inventory_asset:
+		return chassis->c_med_asset;
+#endif
+
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_int_chassis(lldpctl_atom_t *atom, lldpctl_key_t key, long int value)
+{
+	int rc;
+	char *canary = NULL;
+	struct _lldpctl_atom_chassis_t *c = (struct _lldpctl_atom_chassis_t *)atom;
+	struct lldpd_chassis chassis;
+	memcpy(&chassis, c->chassis, sizeof(struct lldpd_chassis));
+
+	switch (key) {
+	case lldpctl_k_chassis_cap_enabled:
+		chassis.c_cap_enabled = c->chassis->c_cap_enabled =
+		    chassis.c_cap_available & value;
+		break;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	if (asprintf(&canary, "%d%ld", key, value) == -1) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+		return NULL;
+	}
+
+	rc = _lldpctl_do_something(atom->conn, CONN_STATE_SET_CHASSIS_SEND,
+	    CONN_STATE_SET_CHASSIS_RECV, canary, SET_CHASSIS, &chassis,
+	    &MARSHAL_INFO(lldpd_chassis), NULL, NULL);
+
+	free(canary);
+	if (rc == 0) return atom;
+	return NULL;
+}
+
+static long int
+_lldpctl_atom_get_int_chassis(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_chassis_t *p = (struct _lldpctl_atom_chassis_t *)atom;
+	struct lldpd_chassis *chassis = p->chassis;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_chassis_index:
+		return chassis->c_index;
+	case lldpctl_k_chassis_id_subtype:
+		return chassis->c_id_subtype;
+	case lldpctl_k_chassis_cap_available:
+		return chassis->c_cap_available;
+	case lldpctl_k_chassis_cap_enabled:
+		return chassis->c_cap_enabled;
+#ifdef ENABLE_LLDPMED
+	case lldpctl_k_chassis_med_type:
+		return chassis->c_med_type;
+	case lldpctl_k_chassis_med_cap:
+		return chassis->c_med_cap_available;
+#endif
+	default:
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	}
+}
+
+static const uint8_t *
+_lldpctl_atom_get_buf_chassis(lldpctl_atom_t *atom, lldpctl_key_t key, size_t *n)
+{
+	struct _lldpctl_atom_chassis_t *p = (struct _lldpctl_atom_chassis_t *)atom;
+	struct lldpd_chassis *chassis = p->chassis;
+
+	switch (key) {
+	case lldpctl_k_chassis_id:
+		*n = chassis->c_id_len;
+		return (uint8_t *)chassis->c_id;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static struct atom_builder chassis = {
+	atom_chassis,
+	sizeof(struct _lldpctl_atom_chassis_t),
+	.init = _lldpctl_atom_new_chassis,
+	.free = _lldpctl_atom_free_chassis,
+	.get = _lldpctl_atom_get_atom_chassis,
+	.get_str = _lldpctl_atom_get_str_chassis,
+	.get_int = _lldpctl_atom_get_int_chassis,
+	.set_int = _lldpctl_atom_set_int_chassis,
+	.get_buffer = _lldpctl_atom_get_buf_chassis,
+#ifdef ENABLE_LLDPMED
+	.set_str = _lldpctl_atom_set_str_chassis,
+#endif
+};
+
+ATOM_BUILDER_REGISTER(chassis, 3);
diff --git a/src/lib/atoms/config.c b/src/lib/atoms/config.c
new file mode 100644
index 0000000..8a4af2e
--- /dev/null
+++ b/src/lib/atoms/config.c
@@ -0,0 +1,338 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2015 Vincent Bernat <vincent@bernat.im>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "../lldpctl.h"
+#include "../../log.h"
+#include "../atom.h"
+#include "../helpers.h"
+
+static struct atom_map bond_slave_src_mac_map = {
+	.key = lldpctl_k_config_bond_slave_src_mac_type,
+	.map = {
+		{ LLDP_BOND_SLAVE_SRC_MAC_TYPE_REAL,   "real"},
+		{ LLDP_BOND_SLAVE_SRC_MAC_TYPE_ZERO,   "zero"},
+		{ LLDP_BOND_SLAVE_SRC_MAC_TYPE_FIXED,  "fixed"},
+		{ LLDP_BOND_SLAVE_SRC_MAC_TYPE_LOCALLY_ADMINISTERED, "local" },
+		{ LLDP_BOND_SLAVE_SRC_MAC_TYPE_UNKNOWN, NULL},
+	},
+};
+
+static struct atom_map lldp_portid_map = {
+	.key = lldpctl_k_config_lldp_portid_type,
+	.map = {
+		{ LLDP_PORTID_SUBTYPE_IFNAME,   "ifname"},
+		{ LLDP_PORTID_SUBTYPE_LLADDR,   "macaddress"},
+		{ LLDP_PORTID_SUBTYPE_LOCAL,    "local"},
+		{ LLDP_PORTID_SUBTYPE_UNKNOWN,  NULL},
+	},
+};
+
+static struct atom_map lldp_agent_map = {
+	.key = lldpctl_k_config_lldp_agent_type,
+	.map = {
+		{ LLDP_AGENT_TYPE_NEAREST_BRIDGE,          "nearest bridge"},
+		{ LLDP_AGENT_TYPE_NEAREST_NONTPMR_BRIDGE,  "nearest non-TPMR bridge"},
+		{ LLDP_AGENT_TYPE_NEAREST_CUSTOMER_BRIDGE, "nearest customer bridge"},
+		{ LLDP_AGENT_TYPE_UNKNOWN, NULL},
+	},
+};
+
+ATOM_MAP_REGISTER(bond_slave_src_mac_map, 1);
+ATOM_MAP_REGISTER(lldp_portid_map, 2);
+ATOM_MAP_REGISTER(lldp_agent_map, 3);
+
+static int
+_lldpctl_atom_new_config(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_config_t *c = (struct _lldpctl_atom_config_t *)atom;
+	c->config = va_arg(ap, struct lldpd_config *);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_config(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_config_t *c = (struct _lldpctl_atom_config_t *)atom;
+	lldpd_config_cleanup(c->config);
+	free(c->config);
+}
+
+static const char *
+_lldpctl_atom_get_str_config(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	char *res = NULL;
+	struct _lldpctl_atom_config_t *c = (struct _lldpctl_atom_config_t *)atom;
+	switch (key) {
+	case lldpctl_k_config_mgmt_pattern:
+		res = c->config->c_mgmt_pattern;
+		break;
+	case lldpctl_k_config_iface_pattern:
+		res = c->config->c_iface_pattern;
+		break;
+	case lldpctl_k_config_perm_iface_pattern:
+		res = c->config->c_perm_ifaces;
+		break;
+	case lldpctl_k_config_cid_pattern:
+		res = c->config->c_cid_pattern;
+		break;
+	case lldpctl_k_config_cid_string:
+		res = c->config->c_cid_string;
+		break;
+	case lldpctl_k_config_description:
+		res = c->config->c_description;
+		break;
+	case lldpctl_k_config_platform:
+		res = c->config->c_platform;
+		break;
+	case lldpctl_k_config_hostname:
+		res = c->config->c_hostname;
+		break;
+	case lldpctl_k_config_bond_slave_src_mac_type:
+		return map_lookup(bond_slave_src_mac_map.map,
+		    c->config->c_bond_slave_src_mac_type);
+	case lldpctl_k_config_lldp_portid_type:
+		return map_lookup(lldp_portid_map.map, c->config->c_lldp_portid_type);
+	case lldpctl_k_config_lldp_agent_type:
+		return map_lookup(lldp_agent_map.map, c->config->c_lldp_agent_type);
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+	return res ? res : "";
+}
+
+static struct _lldpctl_atom_config_t *
+__lldpctl_atom_set_str_config(struct _lldpctl_atom_config_t *c, char **local,
+    char **global, const char *value)
+{
+	if (value) {
+		char *aval = NULL;
+		size_t len = strlen(value) + 1;
+		aval = _lldpctl_alloc_in_atom((lldpctl_atom_t *)c, len);
+		if (!aval) return NULL;
+		memcpy(aval, value, len);
+		*local = aval;
+		free(*global);
+		*global = strdup(aval);
+	} else {
+		free(*global);
+		*local = *global = NULL;
+	}
+	return c;
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_str_config(lldpctl_atom_t *atom, lldpctl_key_t key, const char *value)
+{
+	struct _lldpctl_atom_config_t *c = (struct _lldpctl_atom_config_t *)atom;
+	struct lldpd_config config;
+	memcpy(&config, c->config, sizeof(struct lldpd_config));
+	char *canary = NULL;
+	int rc;
+
+	switch (key) {
+	case lldpctl_k_config_perm_iface_pattern:
+		if (!__lldpctl_atom_set_str_config(c, &config.c_perm_ifaces,
+			&c->config->c_perm_ifaces, value))
+			return NULL;
+		break;
+	case lldpctl_k_config_iface_pattern:
+		if (!__lldpctl_atom_set_str_config(c, &config.c_iface_pattern,
+			&c->config->c_iface_pattern, value))
+			return NULL;
+		break;
+	case lldpctl_k_config_mgmt_pattern:
+		if (!__lldpctl_atom_set_str_config(c, &config.c_mgmt_pattern,
+			&c->config->c_mgmt_pattern, value))
+			return NULL;
+		break;
+	case lldpctl_k_config_cid_string:
+		if (!__lldpctl_atom_set_str_config(c, &config.c_cid_string,
+			&c->config->c_cid_string, value))
+			return NULL;
+		break;
+	case lldpctl_k_config_description:
+		if (!__lldpctl_atom_set_str_config(c, &config.c_description,
+			&c->config->c_description, value))
+			return NULL;
+		break;
+	case lldpctl_k_config_platform:
+		if (!__lldpctl_atom_set_str_config(c, &config.c_platform,
+			&c->config->c_platform, value))
+			return NULL;
+		break;
+	case lldpctl_k_config_hostname:
+		if (!__lldpctl_atom_set_str_config(c, &config.c_hostname,
+			&c->config->c_hostname, value))
+			return NULL;
+		break;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	if (asprintf(&canary, "%d%s", key, value ? value : "(NULL)") == -1) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+		return NULL;
+	}
+	rc = _lldpctl_do_something(atom->conn, CONN_STATE_SET_CONFIG_SEND,
+	    CONN_STATE_SET_CONFIG_RECV, canary, SET_CONFIG, &config,
+	    &MARSHAL_INFO(lldpd_config), NULL, NULL);
+	free(canary);
+	if (rc == 0) return atom;
+
+#undef SET_STR
+
+	return NULL;
+}
+
+static long int
+_lldpctl_atom_get_int_config(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_config_t *c = (struct _lldpctl_atom_config_t *)atom;
+	switch (key) {
+	case lldpctl_k_config_paused:
+		return c->config->c_paused;
+	case lldpctl_k_config_tx_interval:
+		return (c->config->c_tx_interval + 999) / 1000; /* s units */
+	case lldpctl_k_config_tx_interval_ms:
+		return c->config->c_tx_interval; /* ms units */
+	case lldpctl_k_config_receiveonly:
+		return c->config->c_receiveonly;
+	case lldpctl_k_config_advertise_version:
+		return c->config->c_advertise_version;
+	case lldpctl_k_config_ifdescr_update:
+		return c->config->c_set_ifdescr;
+	case lldpctl_k_config_iface_promisc:
+		return c->config->c_promisc;
+	case lldpctl_k_config_chassis_cap_advertise:
+		return c->config->c_cap_advertise;
+	case lldpctl_k_config_chassis_cap_override:
+		return c->config->c_cap_override;
+	case lldpctl_k_config_chassis_mgmt_advertise:
+		return c->config->c_mgmt_advertise;
+#ifdef ENABLE_LLDPMED
+	case lldpctl_k_config_lldpmed_noinventory:
+		return c->config->c_noinventory;
+	case lldpctl_k_config_fast_start_enabled:
+		return c->config->c_enable_fast_start;
+	case lldpctl_k_config_fast_start_interval:
+		return c->config->c_tx_fast_interval;
+#endif
+	case lldpctl_k_config_tx_hold:
+		return c->config->c_tx_hold;
+	case lldpctl_k_config_max_neighbors:
+		return c->config->c_max_neighbors;
+	default:
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_int_config(lldpctl_atom_t *atom, lldpctl_key_t key, long int value)
+{
+	int rc;
+	char *canary = NULL;
+	struct _lldpctl_atom_config_t *c = (struct _lldpctl_atom_config_t *)atom;
+	struct lldpd_config config;
+	memcpy(&config, c->config, sizeof(struct lldpd_config));
+
+	switch (key) {
+	case lldpctl_k_config_paused:
+		config.c_paused = c->config->c_paused = value;
+		break;
+	case lldpctl_k_config_tx_interval:
+		config.c_tx_interval = value * 1000;
+		if (value > 0) c->config->c_tx_interval = value * 1000;
+		break;
+	case lldpctl_k_config_tx_interval_ms:
+		config.c_tx_interval = value;
+		if (value > 0) c->config->c_tx_interval = value;
+		break;
+	case lldpctl_k_config_ifdescr_update:
+		config.c_set_ifdescr = c->config->c_set_ifdescr = value;
+		break;
+	case lldpctl_k_config_iface_promisc:
+		config.c_promisc = c->config->c_promisc = value;
+		break;
+	case lldpctl_k_config_chassis_cap_advertise:
+		config.c_cap_advertise = c->config->c_cap_advertise = value;
+		break;
+	case lldpctl_k_config_chassis_cap_override:
+		config.c_cap_override = c->config->c_cap_override = value;
+		break;
+	case lldpctl_k_config_chassis_mgmt_advertise:
+		config.c_mgmt_advertise = c->config->c_mgmt_advertise = value;
+		break;
+#ifdef ENABLE_LLDPMED
+	case lldpctl_k_config_fast_start_enabled:
+		config.c_enable_fast_start = c->config->c_enable_fast_start = value;
+		break;
+	case lldpctl_k_config_fast_start_interval:
+		config.c_tx_fast_interval = c->config->c_tx_fast_interval = value;
+		break;
+#endif
+	case lldpctl_k_config_tx_hold:
+		config.c_tx_hold = value;
+		if (value > 0) c->config->c_tx_hold = value;
+		break;
+	case lldpctl_k_config_max_neighbors:
+		config.c_max_neighbors = value;
+		if (value > 0) c->config->c_max_neighbors = value;
+		break;
+	case lldpctl_k_config_bond_slave_src_mac_type:
+		config.c_bond_slave_src_mac_type = value;
+		c->config->c_bond_slave_src_mac_type = value;
+		break;
+	case lldpctl_k_config_lldp_portid_type:
+		config.c_lldp_portid_type = value;
+		c->config->c_lldp_portid_type = value;
+		break;
+	case lldpctl_k_config_lldp_agent_type:
+		config.c_lldp_agent_type = value;
+		c->config->c_lldp_agent_type = value;
+		break;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	if (asprintf(&canary, "%d%ld", key, value) == -1) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+		return NULL;
+	}
+	rc = _lldpctl_do_something(atom->conn, CONN_STATE_SET_CONFIG_SEND,
+	    CONN_STATE_SET_CONFIG_RECV, canary, SET_CONFIG, &config,
+	    &MARSHAL_INFO(lldpd_config), NULL, NULL);
+	free(canary);
+	if (rc == 0) return atom;
+	return NULL;
+}
+
+static struct atom_builder config = { atom_config,
+	sizeof(struct _lldpctl_atom_config_t), .init = _lldpctl_atom_new_config,
+	.free = _lldpctl_atom_free_config, .get_str = _lldpctl_atom_get_str_config,
+	.set_str = _lldpctl_atom_set_str_config,
+	.get_int = _lldpctl_atom_get_int_config,
+	.set_int = _lldpctl_atom_set_int_config };
+
+ATOM_BUILDER_REGISTER(config, 1);
diff --git a/src/lib/atoms/custom.c b/src/lib/atoms/custom.c
new file mode 100644
index 0000000..ffa5b03
--- /dev/null
+++ b/src/lib/atoms/custom.c
@@ -0,0 +1,226 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2015 Vincent Bernat <vincent@bernat.im>
+ * Copyright (c) 2015 Alexandru Ardelean <ardeleanalex@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "../lldpctl.h"
+#include "../../log.h"
+#include "../atom.h"
+#include "../helpers.h"
+
+#ifdef ENABLE_CUSTOM
+
+#  define min(x, y) ((x > y) ? y : x)
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_iter_custom_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_custom_list_t *custom =
+	    (struct _lldpctl_atom_custom_list_t *)atom;
+	return (lldpctl_atom_iter_t *)TAILQ_FIRST(&custom->parent->port->p_custom_list);
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_next_custom_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	return (lldpctl_atom_iter_t *)TAILQ_NEXT((struct lldpd_custom *)iter, next);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_value_custom_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct _lldpctl_atom_custom_list_t *custom =
+	    (struct _lldpctl_atom_custom_list_t *)atom;
+	struct lldpd_custom *tlv = (struct lldpd_custom *)iter;
+	return _lldpctl_new_atom(atom->conn, atom_custom, custom->parent, tlv);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_create_custom_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_custom_list_t *custom =
+	    (struct _lldpctl_atom_custom_list_t *)atom;
+	struct lldpd_custom *tlv;
+
+	tlv = _lldpctl_alloc_in_atom(atom, sizeof(struct lldpd_custom));
+	if (!tlv) return NULL;
+	return _lldpctl_new_atom(atom->conn, atom_custom, custom->parent, tlv);
+}
+
+static int
+_lldpctl_atom_new_custom(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_custom_t *custom = (struct _lldpctl_atom_custom_t *)atom;
+
+	custom->parent = va_arg(ap, struct _lldpctl_atom_port_t *);
+	custom->tlv = va_arg(ap, struct lldpd_custom *);
+	lldpctl_atom_inc_ref((lldpctl_atom_t *)custom->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_custom(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_custom_t *custom = (struct _lldpctl_atom_custom_t *)atom;
+	lldpctl_atom_dec_ref((lldpctl_atom_t *)custom->parent);
+}
+
+static long int
+_lldpctl_atom_get_int_custom(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_custom_t *custom = (struct _lldpctl_atom_custom_t *)atom;
+
+	switch (key) {
+	case lldpctl_k_custom_tlv_oui_subtype:
+		return custom->tlv->subtype;
+	default:
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_str_custom(lldpctl_atom_t *atom, lldpctl_key_t key, const char *value)
+{
+	struct _lldpctl_atom_custom_t *custom = (struct _lldpctl_atom_custom_t *)atom;
+
+	if (!value || !strlen(value)) return NULL;
+
+	/* Only local port can be modified */
+	if (!custom->parent->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	switch (key) {
+	case lldpctl_k_custom_tlv_op:
+		if (!strcmp(value, "replace"))
+			custom->op = CUSTOM_TLV_REPLACE;
+		else if (!strcmp(value, "remove"))
+			custom->op = CUSTOM_TLV_REMOVE;
+		else
+			custom->op = CUSTOM_TLV_ADD;
+		return atom;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	SET_ERROR(atom->conn, LLDPCTL_ERR_BAD_VALUE);
+	return NULL;
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_int_custom(lldpctl_atom_t *atom, lldpctl_key_t key, long int value)
+{
+	struct _lldpctl_atom_custom_t *custom = (struct _lldpctl_atom_custom_t *)atom;
+
+	/* Only local port can be modified */
+	if (!custom->parent->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	switch (key) {
+	case lldpctl_k_custom_tlv_oui_subtype:
+		if (value < 0 || value > 255) goto bad;
+		custom->tlv->subtype = value;
+		return atom;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+bad:
+	SET_ERROR(atom->conn, LLDPCTL_ERR_BAD_VALUE);
+	return NULL;
+}
+
+static const uint8_t *
+_lldpctl_atom_get_buffer_custom(lldpctl_atom_t *atom, lldpctl_key_t key, size_t *n)
+{
+	struct _lldpctl_atom_custom_t *custom = (struct _lldpctl_atom_custom_t *)atom;
+
+	switch (key) {
+	case lldpctl_k_custom_tlv_oui:
+		*n = sizeof(custom->tlv->oui);
+		return (const uint8_t *)&custom->tlv->oui;
+	case lldpctl_k_custom_tlv_oui_info_string:
+		*n = custom->tlv->oui_info_len;
+		return (const uint8_t *)custom->tlv->oui_info;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_buffer_custom(lldpctl_atom_t *atom, lldpctl_key_t key,
+    const u_int8_t *buf, size_t n)
+{
+	struct _lldpctl_atom_custom_t *custom = (struct _lldpctl_atom_custom_t *)atom;
+
+	/* Only local port can be modified */
+	if (!custom->parent->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	switch (key) {
+	case lldpctl_k_custom_tlv_oui:
+		memcpy(&custom->tlv->oui, buf, min(n, sizeof(custom->tlv->oui)));
+		return atom;
+	case lldpctl_k_custom_tlv_oui_info_string:
+		if (n == 0 || n > LLDP_TLV_ORG_OUI_INFO_MAXLEN) {
+			SET_ERROR(atom->conn, LLDPCTL_ERR_BAD_VALUE);
+			return NULL;
+		}
+		custom->tlv->oui_info_len = n;
+		if (!(custom->tlv->oui_info = _lldpctl_alloc_in_atom(atom, n))) {
+			custom->tlv->oui_info_len = 0;
+			SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+			return NULL;
+		}
+		memcpy(custom->tlv->oui_info, buf, n);
+		return atom;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static struct atom_builder custom_list = { atom_custom_list,
+	sizeof(struct _lldpctl_atom_any_list_t), .init = _lldpctl_atom_new_any_list,
+	.free = _lldpctl_atom_free_any_list, .iter = _lldpctl_atom_iter_custom_list,
+	.next = _lldpctl_atom_next_custom_list,
+	.value = _lldpctl_atom_value_custom_list,
+	.create = _lldpctl_atom_create_custom_list };
+
+static struct atom_builder custom = { atom_custom,
+	sizeof(struct _lldpctl_atom_custom_t), .init = _lldpctl_atom_new_custom,
+	.free = _lldpctl_atom_free_custom, .get_int = _lldpctl_atom_get_int_custom,
+	.set_int = _lldpctl_atom_set_int_custom,
+	.set_str = _lldpctl_atom_set_str_custom,
+	.get_buffer = _lldpctl_atom_get_buffer_custom,
+	.set_buffer = _lldpctl_atom_set_buffer_custom };
+
+ATOM_BUILDER_REGISTER(custom_list, 22);
+ATOM_BUILDER_REGISTER(custom, 23);
+
+#endif /* ENABLE_CUSTOM */
diff --git a/src/lib/atoms/dot1.c b/src/lib/atoms/dot1.c
new file mode 100644
index 0000000..c2feda0
--- /dev/null
+++ b/src/lib/atoms/dot1.c
@@ -0,0 +1,250 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2015 Vincent Bernat <vincent@bernat.im>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "../lldpctl.h"
+#include "../../log.h"
+#include "../atom.h"
+#include "../helpers.h"
+
+#ifdef ENABLE_DOT1
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_iter_vlans_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_any_list_t *vlist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	return (lldpctl_atom_iter_t *)TAILQ_FIRST(&vlist->parent->port->p_vlans);
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_next_vlans_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct lldpd_vlan *vlan = (struct lldpd_vlan *)iter;
+	return (lldpctl_atom_iter_t *)TAILQ_NEXT(vlan, v_entries);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_value_vlans_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct _lldpctl_atom_any_list_t *vlist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	struct lldpd_vlan *vlan = (struct lldpd_vlan *)iter;
+	return _lldpctl_new_atom(atom->conn, atom_vlan, vlist->parent, vlan);
+}
+
+static int
+_lldpctl_atom_new_vlan(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_vlan_t *vlan = (struct _lldpctl_atom_vlan_t *)atom;
+	vlan->parent = va_arg(ap, struct _lldpctl_atom_port_t *);
+	vlan->vlan = va_arg(ap, struct lldpd_vlan *);
+	lldpctl_atom_inc_ref((lldpctl_atom_t *)vlan->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_vlan(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_vlan_t *vlan = (struct _lldpctl_atom_vlan_t *)atom;
+	lldpctl_atom_dec_ref((lldpctl_atom_t *)vlan->parent);
+}
+
+static const char *
+_lldpctl_atom_get_str_vlan(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_vlan_t *m = (struct _lldpctl_atom_vlan_t *)atom;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_vlan_name:
+		return m->vlan->v_name;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static long int
+_lldpctl_atom_get_int_vlan(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_vlan_t *m = (struct _lldpctl_atom_vlan_t *)atom;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_vlan_id:
+		return m->vlan->v_vid;
+	default:
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	}
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_iter_ppvids_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_any_list_t *vlist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	return (lldpctl_atom_iter_t *)TAILQ_FIRST(&vlist->parent->port->p_ppvids);
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_next_ppvids_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct lldpd_ppvid *ppvid = (struct lldpd_ppvid *)iter;
+	return (lldpctl_atom_iter_t *)TAILQ_NEXT(ppvid, p_entries);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_value_ppvids_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct _lldpctl_atom_any_list_t *vlist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	struct lldpd_ppvid *ppvid = (struct lldpd_ppvid *)iter;
+	return _lldpctl_new_atom(atom->conn, atom_ppvid, vlist->parent, ppvid);
+}
+
+static int
+_lldpctl_atom_new_ppvid(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_ppvid_t *ppvid = (struct _lldpctl_atom_ppvid_t *)atom;
+	ppvid->parent = va_arg(ap, struct _lldpctl_atom_port_t *);
+	ppvid->ppvid = va_arg(ap, struct lldpd_ppvid *);
+	lldpctl_atom_inc_ref((lldpctl_atom_t *)ppvid->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_ppvid(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_ppvid_t *ppvid = (struct _lldpctl_atom_ppvid_t *)atom;
+	lldpctl_atom_dec_ref((lldpctl_atom_t *)ppvid->parent);
+}
+
+static long int
+_lldpctl_atom_get_int_ppvid(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_ppvid_t *m = (struct _lldpctl_atom_ppvid_t *)atom;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_ppvid_id:
+		return m->ppvid->p_ppvid;
+	case lldpctl_k_ppvid_status:
+		return m->ppvid->p_cap_status;
+	default:
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	}
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_iter_pis_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_any_list_t *vlist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	return (lldpctl_atom_iter_t *)TAILQ_FIRST(&vlist->parent->port->p_pids);
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_next_pis_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct lldpd_pi *pi = (struct lldpd_pi *)iter;
+	return (lldpctl_atom_iter_t *)TAILQ_NEXT(pi, p_entries);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_value_pis_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct _lldpctl_atom_any_list_t *vlist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	struct lldpd_pi *pi = (struct lldpd_pi *)iter;
+	return _lldpctl_new_atom(atom->conn, atom_pi, vlist->parent, pi);
+}
+
+static int
+_lldpctl_atom_new_pi(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_pi_t *pi = (struct _lldpctl_atom_pi_t *)atom;
+	pi->parent = va_arg(ap, struct _lldpctl_atom_port_t *);
+	pi->pi = va_arg(ap, struct lldpd_pi *);
+	lldpctl_atom_inc_ref((lldpctl_atom_t *)pi->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_pi(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_pi_t *pi = (struct _lldpctl_atom_pi_t *)atom;
+	lldpctl_atom_dec_ref((lldpctl_atom_t *)pi->parent);
+}
+
+static const uint8_t *
+_lldpctl_atom_get_buf_pi(lldpctl_atom_t *atom, lldpctl_key_t key, size_t *n)
+{
+	struct _lldpctl_atom_pi_t *m = (struct _lldpctl_atom_pi_t *)atom;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_pi_id:
+		*n = m->pi->p_pi_len;
+		return (const uint8_t *)m->pi->p_pi;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static struct atom_builder vlans_list = { atom_vlans_list,
+	sizeof(struct _lldpctl_atom_any_list_t), .init = _lldpctl_atom_new_any_list,
+	.free = _lldpctl_atom_free_any_list, .iter = _lldpctl_atom_iter_vlans_list,
+	.next = _lldpctl_atom_next_vlans_list,
+	.value = _lldpctl_atom_value_vlans_list };
+
+static struct atom_builder vlan = { atom_vlan, sizeof(struct _lldpctl_atom_vlan_t),
+	.init = _lldpctl_atom_new_vlan, .free = _lldpctl_atom_free_vlan,
+	.get_str = _lldpctl_atom_get_str_vlan, .get_int = _lldpctl_atom_get_int_vlan };
+
+static struct atom_builder ppvids_list = { atom_ppvids_list,
+	sizeof(struct _lldpctl_atom_any_list_t), .init = _lldpctl_atom_new_any_list,
+	.free = _lldpctl_atom_free_any_list, .iter = _lldpctl_atom_iter_ppvids_list,
+	.next = _lldpctl_atom_next_ppvids_list,
+	.value = _lldpctl_atom_value_ppvids_list };
+
+static struct atom_builder ppvid = { atom_ppvid, sizeof(struct _lldpctl_atom_ppvid_t),
+	.init = _lldpctl_atom_new_ppvid, .free = _lldpctl_atom_free_ppvid,
+	.get_int = _lldpctl_atom_get_int_ppvid };
+
+static struct atom_builder pis_list = { atom_pis_list,
+	sizeof(struct _lldpctl_atom_any_list_t), .init = _lldpctl_atom_new_any_list,
+	.free = _lldpctl_atom_free_any_list, .iter = _lldpctl_atom_iter_pis_list,
+	.next = _lldpctl_atom_next_pis_list, .value = _lldpctl_atom_value_pis_list };
+
+static struct atom_builder pi = { atom_pi, sizeof(struct _lldpctl_atom_pi_t),
+	.init = _lldpctl_atom_new_pi, .free = _lldpctl_atom_free_pi,
+	.get_buffer = _lldpctl_atom_get_buf_pi };
+
+ATOM_BUILDER_REGISTER(vlans_list, 9);
+ATOM_BUILDER_REGISTER(vlan, 10);
+ATOM_BUILDER_REGISTER(ppvids_list, 11);
+ATOM_BUILDER_REGISTER(ppvid, 12);
+ATOM_BUILDER_REGISTER(pis_list, 13);
+ATOM_BUILDER_REGISTER(pi, 14);
+
+#endif
diff --git a/src/lib/atoms/dot3.c b/src/lib/atoms/dot3.c
new file mode 100644
index 0000000..f3f490a
--- /dev/null
+++ b/src/lib/atoms/dot3.c
@@ -0,0 +1,474 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2015 Vincent Bernat <vincent@bernat.im>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "../lldpctl.h"
+#include "../../log.h"
+#include "../atom.h"
+#include "../helpers.h"
+
+#ifdef ENABLE_DOT3
+
+static lldpctl_map_t port_dot3_power_devicetype_map[] = {
+	{ LLDP_DOT3_POWER_PSE, "PSE" }, { LLDP_DOT3_POWER_PD, "PD" }, { 0, NULL }
+};
+
+static lldpctl_map_t port_dot3_power_pse_source_map[] = { { LLDP_DOT3_POWER_SOURCE_BOTH,
+							      "PSE + Local" },
+	{ LLDP_DOT3_POWER_SOURCE_PSE, "PSE" }, { 0, NULL } };
+
+static lldpctl_map_t port_dot3_power_pd_source_map[] = {
+	{ LLDP_DOT3_POWER_SOURCE_BACKUP, "Backup source" },
+	{ LLDP_DOT3_POWER_SOURCE_PRIMARY, "Primary power source" }, { 0, NULL }
+};
+
+static struct atom_map port_dot3_power_pairs_map = {
+	.key = lldpctl_k_dot3_power_pairs,
+	.map = { { LLDP_DOT3_POWERPAIRS_SIGNAL, "signal" },
+	    { LLDP_DOT3_POWERPAIRS_SPARE, "spare" }, { 0, NULL } },
+};
+
+static struct atom_map port_dot3_power_class_map = {
+	.key = lldpctl_k_dot3_power_class,
+	.map = { { 1, "class 0" }, { 2, "class 1" }, { 3, "class 2" }, { 4, "class 3" },
+	    { 5, "class 4" }, { 0, NULL } },
+};
+
+static struct atom_map port_dot3_power_priority_map = {
+	.key = lldpctl_k_dot3_power_priority,
+	.map = {
+		{ 0,                          "unknown" },
+		{ LLDP_MED_POW_PRIO_CRITICAL, "critical" },
+		{ LLDP_MED_POW_PRIO_HIGH,     "high" },
+		{ LLDP_MED_POW_PRIO_LOW,      "low" },
+		{ 0, NULL },
+	},
+};
+
+static struct atom_map port_dot3_power_pd_4pid_map = {
+	.key = lldpctl_k_dot3_power_pd_4pid,
+	.map = {
+		{ 0, "PD does not support powering both modes" },
+		{ 1, "PD supports powering both modes" },
+		{ 0, NULL},
+	},
+};
+
+static struct atom_map port_dot3_power_pse_status_map = {
+	.key = lldpctl_k_dot3_power_pse_status,
+	.map = {
+		{ 0, "unknown" },
+		{ 1, "2-pair powering" },
+		{ 2, "4-pair powering dual-signature PD" },
+		{ 3, "4-pair powering single-signature PD" },
+		{ 0, NULL },
+	},
+};
+
+static struct atom_map port_dot3_power_pd_status_map = {
+	.key = lldpctl_k_dot3_power_pd_status,
+	.map = {
+		{ 0, "unknown" },
+		{ 1, "2-pair powered PD" },
+		{ 2, "4-pair powered dual-signature PD" },
+		{ 3, "4-pair powered single-signature PD" },
+		{ 0, NULL },
+	},
+};
+
+static struct atom_map port_dot3_power_pse_pairs_ext_map = {
+	.key = lldpctl_k_dot3_power_pse_pairs_ext,
+	.map = {
+		{ 0, "unknown" },
+		{ 1, "alternative A" },
+		{ 2, "alternative B" },
+		{ 3, "both alternatives" },
+		{ 0, NULL },
+	},
+};
+
+static struct atom_map port_dot3_power_class_a_map = {
+	.key = lldpctl_k_dot3_power_class_a,
+	.map = {
+		{ 0, "unknown" },
+		{ 1, "class 1" },
+		{ 2, "class 2" },
+		{ 3, "class 3" },
+		{ 4, "class 4" },
+		{ 5, "class 5" },
+		{ 6, "unknown" },
+		{ 7, "single-signature PD or 2-pair only PSE" },
+		{ 0, NULL },
+	},
+};
+
+static struct atom_map port_dot3_power_class_b_map = {
+	.key = lldpctl_k_dot3_power_class_b,
+	.map = {
+		{ 0, "unknown" },
+		{ 1, "class 1" },
+		{ 2, "class 2" },
+		{ 3, "class 3" },
+		{ 4, "class 4" },
+		{ 5, "class 5" },
+		{ 6, "unknown" },
+		{ 7, "single-signature PD or 2-pair only PSE" },
+		{ 0, NULL },
+	},
+};
+
+static struct atom_map port_dot3_power_class_ext_map = {
+	.key = lldpctl_k_dot3_power_class_ext,
+	.map = {
+		{ 0, "unknown" },
+		{ 1, "class 1" },
+		{ 2, "class 2" },
+		{ 3, "class 3" },
+		{ 4, "class 4" },
+		{ 5, "class 5" },
+		{ 6, "class 6" },
+		{ 7, "class 7" },
+		{ 8, "class 8" },
+		{ 9, "unknown" },
+		{ 10, "unknown" },
+		{ 11, "unknown" },
+		{ 12, "unknown" },
+		{ 13, "unknown" },
+		{ 14, "unknown" },
+		{ 15, "dual-signature PD" },
+		{ 0, NULL },
+	},
+};
+
+static struct atom_map port_dot3_power_type_ext_map = {
+	.key = lldpctl_k_dot3_power_type_ext,
+	.map = {
+		{ LLDP_DOT3_POWER_8023BT_OFF, "802.3bt off" },
+		{ 1, "type 3 PSE" },
+		{ 2, "type 4 PSE" },
+		{ 3, "type 3 single-signature PD" },
+		{ 4, "type 3 dual-signature PD" },
+		{ 5, "type 4 single-signature PD" },
+		{ 6, "type 4 dual-signature PD" },
+		{ 7, "unknown" },
+		{ 8, "unknown" },
+		{ 0, NULL },
+	},
+};
+
+static struct atom_map port_dot3_power_pd_load_map = {
+	.key = lldpctl_k_dot3_power_pd_load,
+	.map = {
+		{ 0, "PD is single- or dual-signature and power is not "
+		  "electrically isolated" },
+		{ 1, "PD is dual-signature and power is electrically "
+		  "isolated" },
+		{ 0, NULL },
+	},
+};
+
+ATOM_MAP_REGISTER(port_dot3_power_pairs_map, 4);
+ATOM_MAP_REGISTER(port_dot3_power_class_map, 5);
+ATOM_MAP_REGISTER(port_dot3_power_priority_map, 6);
+
+static int
+_lldpctl_atom_new_dot3_power(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_dot3_power_t *dpow =
+	    (struct _lldpctl_atom_dot3_power_t *)atom;
+	dpow->parent = va_arg(ap, struct _lldpctl_atom_port_t *);
+	lldpctl_atom_inc_ref((lldpctl_atom_t *)dpow->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_dot3_power(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_dot3_power_t *dpow =
+	    (struct _lldpctl_atom_dot3_power_t *)atom;
+	lldpctl_atom_dec_ref((lldpctl_atom_t *)dpow->parent);
+}
+
+static const char *
+_lldpctl_atom_get_str_dot3_power(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_dot3_power_t *dpow =
+	    (struct _lldpctl_atom_dot3_power_t *)atom;
+	struct lldpd_port *port = dpow->parent->port;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_dot3_power_devicetype:
+		return map_lookup(port_dot3_power_devicetype_map,
+		    port->p_power.devicetype);
+	case lldpctl_k_dot3_power_pairs:
+		return map_lookup(port_dot3_power_pairs_map.map, port->p_power.pairs);
+	case lldpctl_k_dot3_power_class:
+		return map_lookup(port_dot3_power_class_map.map, port->p_power.class);
+	case lldpctl_k_dot3_power_source:
+		return map_lookup((port->p_power.devicetype == LLDP_DOT3_POWER_PSE) ?
+			port_dot3_power_pse_source_map :
+			port_dot3_power_pd_source_map,
+		    port->p_power.source);
+	case lldpctl_k_dot3_power_priority:
+		return map_lookup(port_dot3_power_priority_map.map,
+		    port->p_power.priority);
+	case lldpctl_k_dot3_power_pd_4pid:
+		return map_lookup(port_dot3_power_pd_4pid_map.map,
+		    port->p_power.pd_4pid);
+	case lldpctl_k_dot3_power_pse_status:
+		return map_lookup(port_dot3_power_pse_status_map.map,
+		    port->p_power.pse_status);
+	case lldpctl_k_dot3_power_pd_status:
+		return map_lookup(port_dot3_power_pd_status_map.map,
+		    port->p_power.pd_status);
+	case lldpctl_k_dot3_power_pse_pairs_ext:
+		return map_lookup(port_dot3_power_pse_pairs_ext_map.map,
+		    port->p_power.pse_pairs_ext);
+	case lldpctl_k_dot3_power_class_a:
+		return map_lookup(port_dot3_power_class_a_map.map,
+		    port->p_power.class_a);
+	case lldpctl_k_dot3_power_class_b:
+		return map_lookup(port_dot3_power_class_b_map.map,
+		    port->p_power.class_b);
+	case lldpctl_k_dot3_power_class_ext:
+		return map_lookup(port_dot3_power_class_ext_map.map,
+		    port->p_power.class_ext);
+	case lldpctl_k_dot3_power_type_ext:
+		return map_lookup(port_dot3_power_type_ext_map.map,
+		    port->p_power.type_ext);
+	case lldpctl_k_dot3_power_pd_load:
+		return map_lookup(port_dot3_power_pd_load_map.map,
+		    port->p_power.pd_load);
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static long int
+_lldpctl_atom_get_int_dot3_power(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_dot3_power_t *dpow =
+	    (struct _lldpctl_atom_dot3_power_t *)atom;
+	struct lldpd_port *port = dpow->parent->port;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_dot3_power_devicetype:
+		return port->p_power.devicetype;
+	case lldpctl_k_dot3_power_supported:
+		return port->p_power.supported;
+	case lldpctl_k_dot3_power_enabled:
+		return port->p_power.enabled;
+	case lldpctl_k_dot3_power_paircontrol:
+		return port->p_power.paircontrol;
+	case lldpctl_k_dot3_power_pairs:
+		return port->p_power.pairs;
+	case lldpctl_k_dot3_power_class:
+		return port->p_power.class;
+	case lldpctl_k_dot3_power_type:
+		return port->p_power.powertype;
+	case lldpctl_k_dot3_power_source:
+		return port->p_power.source;
+	case lldpctl_k_dot3_power_priority:
+		return port->p_power.priority;
+	case lldpctl_k_dot3_power_requested:
+		return port->p_power.requested * 100;
+	case lldpctl_k_dot3_power_allocated:
+		return port->p_power.allocated * 100;
+	/* 802.3bt additions */
+	case lldpctl_k_dot3_power_pd_4pid:
+		return port->p_power.pd_4pid;
+	case lldpctl_k_dot3_power_requested_a:
+		return port->p_power.requested_a * 100;
+	case lldpctl_k_dot3_power_requested_b:
+		return port->p_power.requested_b * 100;
+	case lldpctl_k_dot3_power_allocated_a:
+		return port->p_power.allocated_a * 100;
+	case lldpctl_k_dot3_power_allocated_b:
+		return port->p_power.allocated_b * 100;
+	case lldpctl_k_dot3_power_pse_status:
+		return port->p_power.pse_status;
+	case lldpctl_k_dot3_power_pd_status:
+		return port->p_power.pd_status;
+	case lldpctl_k_dot3_power_pse_pairs_ext:
+		return port->p_power.pse_pairs_ext;
+	case lldpctl_k_dot3_power_class_a:
+		return port->p_power.class_a;
+	case lldpctl_k_dot3_power_class_b:
+		return port->p_power.class_b;
+	case lldpctl_k_dot3_power_class_ext:
+		return port->p_power.class_ext;
+	case lldpctl_k_dot3_power_type_ext:
+		return port->p_power.type_ext;
+	case lldpctl_k_dot3_power_pd_load:
+		return port->p_power.pd_load;
+	case lldpctl_k_dot3_power_pse_max:
+		return port->p_power.pse_max * 100;
+	default:
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_int_dot3_power(lldpctl_atom_t *atom, lldpctl_key_t key,
+    long int value)
+{
+	struct _lldpctl_atom_dot3_power_t *dpow =
+	    (struct _lldpctl_atom_dot3_power_t *)atom;
+	struct lldpd_port *port = dpow->parent->port;
+
+	/* Only local port can be modified */
+	if (!dpow->parent->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	switch (key) {
+	case lldpctl_k_dot3_power_devicetype:
+		switch (value) {
+		case 0: /* Disabling */
+		case LLDP_DOT3_POWER_PSE:
+		case LLDP_DOT3_POWER_PD:
+			port->p_power.devicetype = value;
+			return atom;
+		default:
+			goto bad;
+		}
+	case lldpctl_k_dot3_power_supported:
+		switch (value) {
+		case 0:
+		case 1:
+			port->p_power.supported = value;
+			return atom;
+		default:
+			goto bad;
+		}
+	case lldpctl_k_dot3_power_enabled:
+		switch (value) {
+		case 0:
+		case 1:
+			port->p_power.enabled = value;
+			return atom;
+		default:
+			goto bad;
+		}
+	case lldpctl_k_dot3_power_paircontrol:
+		switch (value) {
+		case 0:
+		case 1:
+			port->p_power.paircontrol = value;
+			return atom;
+		default:
+			goto bad;
+		}
+	case lldpctl_k_dot3_power_pairs:
+		switch (value) {
+		case 1:
+		case 2:
+			port->p_power.pairs = value;
+			return atom;
+		default:
+			goto bad;
+		}
+	case lldpctl_k_dot3_power_class:
+		if (value < 0 || value > 5) goto bad;
+		port->p_power.class = value;
+		return atom;
+	case lldpctl_k_dot3_power_type:
+		switch (value) {
+		case LLDP_DOT3_POWER_8023AT_TYPE1:
+		case LLDP_DOT3_POWER_8023AT_TYPE2:
+		case LLDP_DOT3_POWER_8023AT_OFF:
+			port->p_power.powertype = value;
+			return atom;
+		default:
+			goto bad;
+		}
+	case lldpctl_k_dot3_power_source:
+		if (value < 0 || value > 3) goto bad;
+		port->p_power.source = value;
+		return atom;
+	case lldpctl_k_dot3_power_priority:
+		switch (value) {
+		case LLDP_DOT3_POWER_PRIO_UNKNOWN:
+		case LLDP_DOT3_POWER_PRIO_CRITICAL:
+		case LLDP_DOT3_POWER_PRIO_HIGH:
+		case LLDP_DOT3_POWER_PRIO_LOW:
+			port->p_power.priority = value;
+			return atom;
+		default:
+			goto bad;
+		}
+	case lldpctl_k_dot3_power_allocated:
+		if (value < 0) goto bad;
+		port->p_power.allocated = value / 100;
+		return atom;
+	case lldpctl_k_dot3_power_requested:
+		if (value < 0) goto bad;
+		port->p_power.requested = value / 100;
+		return atom;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	return atom;
+bad:
+	SET_ERROR(atom->conn, LLDPCTL_ERR_BAD_VALUE);
+	return NULL;
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_str_dot3_power(lldpctl_atom_t *atom, lldpctl_key_t key,
+    const char *value)
+{
+	switch (key) {
+	case lldpctl_k_dot3_power_devicetype:
+		return _lldpctl_atom_set_int_dot3_power(atom, key,
+		    map_reverse_lookup(port_dot3_power_devicetype_map, value));
+	case lldpctl_k_dot3_power_pairs:
+		return _lldpctl_atom_set_int_dot3_power(atom, key,
+		    map_reverse_lookup(port_dot3_power_pairs_map.map, value));
+	case lldpctl_k_dot3_power_class:
+		return _lldpctl_atom_set_int_dot3_power(atom, key,
+		    map_reverse_lookup(port_dot3_power_class_map.map, value));
+	case lldpctl_k_dot3_power_priority:
+		return _lldpctl_atom_set_int_dot3_power(atom, key,
+		    map_reverse_lookup(port_dot3_power_priority_map.map, value));
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static struct atom_builder dot3_power = { atom_dot3_power,
+	sizeof(struct _lldpctl_atom_dot3_power_t), .init = _lldpctl_atom_new_dot3_power,
+	.free = _lldpctl_atom_free_dot3_power,
+	.get_int = _lldpctl_atom_get_int_dot3_power,
+	.set_int = _lldpctl_atom_set_int_dot3_power,
+	.get_str = _lldpctl_atom_get_str_dot3_power,
+	.set_str = _lldpctl_atom_set_str_dot3_power };
+
+ATOM_BUILDER_REGISTER(dot3_power, 8);
+
+#endif
diff --git a/src/lib/atoms/interface.c b/src/lib/atoms/interface.c
new file mode 100644
index 0000000..95cae3a
--- /dev/null
+++ b/src/lib/atoms/interface.c
@@ -0,0 +1,118 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2015 Vincent Bernat <vincent@bernat.im>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "../lldpctl.h"
+#include "../../log.h"
+#include "../atom.h"
+#include "../helpers.h"
+
+static int
+_lldpctl_atom_new_interfaces_list(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_interfaces_list_t *iflist =
+	    (struct _lldpctl_atom_interfaces_list_t *)atom;
+	iflist->ifs = va_arg(ap, struct lldpd_interface_list *);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_interfaces_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_interfaces_list_t *iflist =
+	    (struct _lldpctl_atom_interfaces_list_t *)atom;
+	struct lldpd_interface *iface, *iface_next;
+	for (iface = TAILQ_FIRST(iflist->ifs); iface != NULL; iface = iface_next) {
+		/* Don't TAILQ_REMOVE, this is not a real list! */
+		iface_next = TAILQ_NEXT(iface, next);
+		free(iface->name);
+		free(iface);
+	}
+	free(iflist->ifs);
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_iter_interfaces_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_interfaces_list_t *iflist =
+	    (struct _lldpctl_atom_interfaces_list_t *)atom;
+	return (lldpctl_atom_iter_t *)TAILQ_FIRST(iflist->ifs);
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_next_interfaces_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	return (lldpctl_atom_iter_t *)TAILQ_NEXT((struct lldpd_interface *)iter, next);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_value_interfaces_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct lldpd_interface *iface = (struct lldpd_interface *)iter;
+	return _lldpctl_new_atom(atom->conn, atom_interface, iface->name);
+}
+
+static int
+_lldpctl_atom_new_interface(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_interface_t *port =
+	    (struct _lldpctl_atom_interface_t *)atom;
+	port->name = strdup(va_arg(ap, char *));
+	return (port->name != NULL);
+}
+
+static void
+_lldpctl_atom_free_interface(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_interface_t *port =
+	    (struct _lldpctl_atom_interface_t *)atom;
+	free(port->name);
+}
+
+static const char *
+_lldpctl_atom_get_str_interface(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_interface_t *port =
+	    (struct _lldpctl_atom_interface_t *)atom;
+	switch (key) {
+	case lldpctl_k_interface_name:
+		return port->name;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static struct atom_builder interfaces_list = { atom_interfaces_list,
+	sizeof(struct _lldpctl_atom_interfaces_list_t),
+	.init = _lldpctl_atom_new_interfaces_list,
+	.free = _lldpctl_atom_free_interfaces_list,
+	.iter = _lldpctl_atom_iter_interfaces_list,
+	.next = _lldpctl_atom_next_interfaces_list,
+	.value = _lldpctl_atom_value_interfaces_list };
+
+static struct atom_builder interface = { atom_interface,
+	sizeof(struct _lldpctl_atom_interface_t), .init = _lldpctl_atom_new_interface,
+	.free = _lldpctl_atom_free_interface,
+	.get_str = _lldpctl_atom_get_str_interface };
+
+ATOM_BUILDER_REGISTER(interfaces_list, 2);
+ATOM_BUILDER_REGISTER(interface, 3);
diff --git a/src/lib/atoms/med.c b/src/lib/atoms/med.c
new file mode 100644
index 0000000..c1e3234
--- /dev/null
+++ b/src/lib/atoms/med.c
@@ -0,0 +1,1123 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2015 Vincent Bernat <vincent@bernat.im>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "../lldpctl.h"
+#include "../../log.h"
+#include "../atom.h"
+#include "../helpers.h"
+#include "../fixedpoint.h"
+
+#ifdef ENABLE_LLDPMED
+
+static lldpctl_map_t port_med_location_map[] = {
+	{ LLDP_MED_LOCFORMAT_COORD, "Coordinates" },
+	{ LLDP_MED_LOCFORMAT_CIVIC, "Civic address" },
+	{ LLDP_MED_LOCFORMAT_ELIN, "ELIN" },
+	{ 0, NULL },
+};
+
+static lldpctl_map_t port_med_pow_devicetype_map[] = {
+	{ LLDP_MED_POW_TYPE_PSE, "PSE" },
+	{ LLDP_MED_POW_TYPE_PD, "PD" },
+	{ 0, NULL },
+};
+
+static lldpctl_map_t port_med_pow_source_map[] = {
+	{ LLDP_MED_POW_SOURCE_PRIMARY, "Primary Power Source" },
+	{ LLDP_MED_POW_SOURCE_BACKUP, "Backup Power Source / Power Conservation Mode" },
+	{ LLDP_MED_POW_SOURCE_PSE, "PSE" },
+	{ LLDP_MED_POW_SOURCE_LOCAL, "Local" },
+	{ LLDP_MED_POW_SOURCE_BOTH, "PSE + Local" },
+	{ 0, NULL },
+};
+
+static lldpctl_map_t port_med_pow_source_map2[] = {
+	{ 0, "unknown" },
+	{ LLDP_MED_POW_SOURCE_PRIMARY, "primary" },
+	{ LLDP_MED_POW_SOURCE_BACKUP, "backup" },
+	{ LLDP_MED_POW_SOURCE_PSE, "pse" },
+	{ LLDP_MED_POW_SOURCE_LOCAL, "local" },
+	{ LLDP_MED_POW_SOURCE_BOTH, "both" },
+	{ 0, NULL },
+};
+
+static struct atom_map port_med_geoid_map = {
+	.key = lldpctl_k_med_location_geoid,
+	.map = {
+		{ LLDP_MED_LOCATION_GEOID_WGS84, "WGS84" },
+		{ LLDP_MED_LOCATION_GEOID_NAD83, "NAD83" },
+		{ LLDP_MED_LOCATION_GEOID_NAD83_MLLW, "NAD83/MLLW" },
+		{ 0, NULL },
+	},
+};
+
+static struct atom_map civic_address_type_map = {
+	.key = lldpctl_k_med_civicaddress_type,
+	.map = {
+        { 0,    "Language" },
+        { 1,    "Country subdivision" },
+        { 2,    "County" },
+        { 3,    "City" },
+        { 4,    "City division" },
+        { 5,    "Block" },
+        { 6,    "Street" },
+        { 16,   "Direction" },
+        { 17,   "Trailing street suffix" },
+        { 18,   "Street suffix" },
+        { 19,   "Number" },
+        { 20,   "Number suffix" },
+        { 21,   "Landmark" },
+        { 22,   "Additional" },
+        { 23,   "Name" },
+        { 24,   "ZIP" },
+        { 25,   "Building" },
+        { 26,   "Unit" },
+        { 27,   "Floor" },
+        { 28,   "Room" },
+        { 29,   "Place type" },
+        { 128,  "Script" },
+        { 0, NULL },
+	},
+};
+
+static struct atom_map port_med_policy_map = { .key = lldpctl_k_med_policy_type,
+	.map = {
+	    { LLDP_MED_APPTYPE_VOICE, "Voice" },
+	    { LLDP_MED_APPTYPE_VOICESIGNAL, "Voice Signaling" },
+	    { LLDP_MED_APPTYPE_GUESTVOICE, "Guest Voice" },
+	    { LLDP_MED_APPTYPE_GUESTVOICESIGNAL, "Guest Voice Signaling" },
+	    { LLDP_MED_APPTYPE_SOFTPHONEVOICE, "Softphone Voice" },
+	    { LLDP_MED_APPTYPE_VIDEOCONFERENCE, "Video Conferencing" },
+	    { LLDP_MED_APPTYPE_VIDEOSTREAM, "Streaming Video" },
+	    { LLDP_MED_APPTYPE_VIDEOSIGNAL, "Video Signaling" },
+	    { 0, NULL },
+	} };
+
+static struct atom_map port_med_policy_prio_map = {
+	.key = lldpctl_k_med_policy_priority,
+	.map = {
+		{ 1, "Background" },
+		{ 0, "Best effort" },
+		{ 2, "Excellent effort" },
+		{ 3, "Critical applications" },
+		{ 4, "Video" },
+		{ 5, "Voice" },
+		{ 6, "Internetwork control" },
+		{ 7, "Network control" },
+		{ 0, NULL },
+	},
+};
+
+static struct atom_map port_med_pow_priority_map = {
+	.key = lldpctl_k_med_power_priority,
+	.map = {
+		{ 0,                          "unknown" },
+		{ LLDP_MED_POW_PRIO_CRITICAL, "critical" },
+		{ LLDP_MED_POW_PRIO_HIGH,     "high" },
+		{ LLDP_MED_POW_PRIO_LOW,      "low" },
+		{ 0, NULL },
+	},
+};
+
+ATOM_MAP_REGISTER(port_med_geoid_map, 7);
+ATOM_MAP_REGISTER(civic_address_type_map, 8);
+ATOM_MAP_REGISTER(port_med_policy_map, 9);
+ATOM_MAP_REGISTER(port_med_policy_prio_map, 10);
+ATOM_MAP_REGISTER(port_med_pow_priority_map, 11);
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_iter_med_policies_list(lldpctl_atom_t *atom)
+{
+	int i;
+	struct _lldpctl_atom_any_list_t *vlist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	for (i = 0; i < LLDP_MED_APPTYPE_LAST; i++)
+		vlist->parent->port->p_med_policy[i].index = i;
+	return (lldpctl_atom_iter_t *)&vlist->parent->port->p_med_policy[0];
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_next_med_policies_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct lldpd_med_policy *policy = (struct lldpd_med_policy *)iter;
+	if (policy->index == LLDP_MED_APPTYPE_LAST - 1) return NULL;
+	return (lldpctl_atom_iter_t *)(++policy);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_value_med_policies_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct _lldpctl_atom_any_list_t *vlist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	struct lldpd_med_policy *policy = (struct lldpd_med_policy *)iter;
+	return _lldpctl_new_atom(atom->conn, atom_med_policy, vlist->parent, policy);
+}
+
+static int
+_lldpctl_atom_new_med_policy(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_med_policy_t *policy =
+	    (struct _lldpctl_atom_med_policy_t *)atom;
+	policy->parent = va_arg(ap, struct _lldpctl_atom_port_t *);
+	policy->policy = va_arg(ap, struct lldpd_med_policy *);
+	lldpctl_atom_inc_ref((lldpctl_atom_t *)policy->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_med_policy(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_med_policy_t *policy =
+	    (struct _lldpctl_atom_med_policy_t *)atom;
+	lldpctl_atom_dec_ref((lldpctl_atom_t *)policy->parent);
+}
+
+static long int
+_lldpctl_atom_get_int_med_policy(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_med_policy_t *m =
+	    (struct _lldpctl_atom_med_policy_t *)atom;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_med_policy_type:
+		return m->policy->type;
+	case lldpctl_k_med_policy_unknown:
+		return m->policy->unknown;
+	case lldpctl_k_med_policy_tagged:
+		return m->policy->tagged;
+	case lldpctl_k_med_policy_vid:
+		return m->policy->vid;
+	case lldpctl_k_med_policy_dscp:
+		return m->policy->dscp;
+	case lldpctl_k_med_policy_priority:
+		return m->policy->priority;
+	default:
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_int_med_policy(lldpctl_atom_t *atom, lldpctl_key_t key,
+    long int value)
+{
+	struct _lldpctl_atom_med_policy_t *m =
+	    (struct _lldpctl_atom_med_policy_t *)atom;
+
+	/* Only local port can be modified */
+	if (!m->parent->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	switch (key) {
+	case lldpctl_k_med_policy_type:
+		/* We let set any policy type, including one whose are not
+		 * compatible with the index. If a policy type is set, the index
+		 * will be ignored. If a policy type is 0, the index will be
+		 * used to know which policy to "erase". */
+		if (value < 0 || value > LLDP_MED_APPTYPE_LAST) goto bad;
+		m->policy->type = value;
+		return atom;
+	case lldpctl_k_med_policy_unknown:
+		if (value != 0 && value != 1) goto bad;
+		m->policy->unknown = value;
+		return atom;
+	case lldpctl_k_med_policy_tagged:
+		if (value != 0 && value != 1) goto bad;
+		m->policy->tagged = value;
+		return atom;
+	case lldpctl_k_med_policy_vid:
+		if (value < 0 || value > 4094) goto bad;
+		m->policy->vid = value;
+		return atom;
+	case lldpctl_k_med_policy_dscp:
+		if (value < 0 || value > 63) goto bad;
+		m->policy->dscp = value;
+		return atom;
+	case lldpctl_k_med_policy_priority:
+		if (value < 0 || value > 7) goto bad;
+		m->policy->priority = value;
+		return atom;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	return atom;
+bad:
+	SET_ERROR(atom->conn, LLDPCTL_ERR_BAD_VALUE);
+	return NULL;
+}
+
+static const char *
+_lldpctl_atom_get_str_med_policy(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_med_policy_t *m =
+	    (struct _lldpctl_atom_med_policy_t *)atom;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_med_policy_type:
+		return map_lookup(port_med_policy_map.map, m->policy->type);
+	case lldpctl_k_med_policy_priority:
+		return map_lookup(port_med_policy_prio_map.map, m->policy->priority);
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_str_med_policy(lldpctl_atom_t *atom, lldpctl_key_t key,
+    const char *value)
+{
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_med_policy_type:
+		return _lldpctl_atom_set_int_med_policy(atom, key,
+		    map_reverse_lookup(port_med_policy_map.map, value));
+	case lldpctl_k_med_policy_priority:
+		return _lldpctl_atom_set_int_med_policy(atom, key,
+		    map_reverse_lookup(port_med_policy_prio_map.map, value));
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_iter_med_locations_list(lldpctl_atom_t *atom)
+{
+	int i;
+	struct _lldpctl_atom_any_list_t *vlist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	for (i = 0; i < LLDP_MED_LOCFORMAT_LAST; i++)
+		vlist->parent->port->p_med_location[i].index = i;
+	return (lldpctl_atom_iter_t *)&vlist->parent->port->p_med_location[0];
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_next_med_locations_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct lldpd_med_loc *location = (struct lldpd_med_loc *)iter;
+	if (location->index == LLDP_MED_LOCFORMAT_LAST - 1) return NULL;
+	return (lldpctl_atom_iter_t *)(++location);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_value_med_locations_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct _lldpctl_atom_any_list_t *vlist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	struct lldpd_med_loc *location = (struct lldpd_med_loc *)iter;
+	return _lldpctl_new_atom(atom->conn, atom_med_location, vlist->parent,
+	    location);
+}
+
+static int
+_lldpctl_atom_new_med_location(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_med_location_t *location =
+	    (struct _lldpctl_atom_med_location_t *)atom;
+	location->parent = va_arg(ap, struct _lldpctl_atom_port_t *);
+	location->location = va_arg(ap, struct lldpd_med_loc *);
+	lldpctl_atom_inc_ref((lldpctl_atom_t *)location->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_med_location(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_med_location_t *location =
+	    (struct _lldpctl_atom_med_location_t *)atom;
+	lldpctl_atom_dec_ref((lldpctl_atom_t *)location->parent);
+}
+
+static long int
+_lldpctl_atom_get_int_med_location(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_med_location_t *m =
+	    (struct _lldpctl_atom_med_location_t *)atom;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_med_location_format:
+		switch (m->location->format) {
+		case LLDP_MED_LOCFORMAT_COORD:
+			if (m->location->data_len != 16) break;
+			return LLDP_MED_LOCFORMAT_COORD;
+		case LLDP_MED_LOCFORMAT_CIVIC:
+			if ((m->location->data_len < 3) ||
+			    (m->location->data_len - 1 < m->location->data[0]))
+				break;
+			return LLDP_MED_LOCFORMAT_CIVIC;
+		case LLDP_MED_LOCFORMAT_ELIN:
+			return LLDP_MED_LOCFORMAT_ELIN;
+		default:
+			return 0;
+		}
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	case lldpctl_k_med_location_geoid:
+		if (m->location->format != LLDP_MED_LOCFORMAT_COORD)
+			return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return m->location->data[15];
+	case lldpctl_k_med_location_altitude_unit:
+		if (m->location->format != LLDP_MED_LOCFORMAT_COORD)
+			return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return (m->location->data[10] & 0xf0) >> 4;
+	default:
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_int_med_location(lldpctl_atom_t *atom, lldpctl_key_t key,
+    long int value)
+{
+	struct _lldpctl_atom_med_location_t *mloc =
+	    (struct _lldpctl_atom_med_location_t *)atom;
+
+	/* Only local port can be modified */
+	if (!mloc->parent->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	switch (key) {
+	case lldpctl_k_med_location_format:
+		switch (value) {
+		case 0: /* Disabling */
+		case LLDP_MED_LOCFORMAT_COORD:
+			mloc->location->format = value;
+			free(mloc->location->data);
+			mloc->location->data = calloc(1, 16);
+			if (mloc->location->data == NULL) {
+				mloc->location->data_len = 0;
+				SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+				return NULL;
+			}
+			mloc->location->data_len = 16;
+			return atom;
+		case LLDP_MED_LOCFORMAT_CIVIC:
+			mloc->location->format = value;
+			free(mloc->location->data);
+			mloc->location->data = calloc(1, 4);
+			if (mloc->location->data == NULL) {
+				mloc->location->data_len = 0;
+				SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+				return NULL;
+			}
+			mloc->location->data_len = 4;
+			mloc->location->data[0] = 3;
+			mloc->location->data[1] = 2; /* Client */
+			mloc->location->data[2] = 'U';
+			mloc->location->data[3] = 'S';
+			return atom;
+		case LLDP_MED_LOCFORMAT_ELIN:
+			mloc->location->format = value;
+			free(mloc->location->data);
+			mloc->location->data = NULL;
+			mloc->location->data_len = 0;
+			return atom;
+		default:
+			goto bad;
+		}
+	case lldpctl_k_med_location_geoid:
+		if (mloc->location->format != LLDP_MED_LOCFORMAT_COORD) goto bad;
+		if (mloc->location->data == NULL || mloc->location->data_len != 16)
+			goto bad;
+		switch (value) {
+		case 0:
+		case LLDP_MED_LOCATION_GEOID_WGS84:
+		case LLDP_MED_LOCATION_GEOID_NAD83:
+		case LLDP_MED_LOCATION_GEOID_NAD83_MLLW:
+			mloc->location->data[15] = value;
+			return atom;
+		default:
+			goto bad;
+		}
+	case lldpctl_k_med_location_altitude_unit:
+		if (mloc->location->format != LLDP_MED_LOCFORMAT_COORD) goto bad;
+		if (mloc->location->data == NULL || mloc->location->data_len != 16)
+			goto bad;
+		switch (value) {
+		case 0:
+		case LLDP_MED_LOCATION_ALTITUDE_UNIT_METER:
+		case LLDP_MED_LOCATION_ALTITUDE_UNIT_FLOOR:
+			mloc->location->data[10] &= 0x0f;
+			mloc->location->data[10] |= value << 4;
+			return atom;
+		default:
+			goto bad;
+		}
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	return atom;
+bad:
+	SET_ERROR(atom->conn, LLDPCTL_ERR_BAD_VALUE);
+	return NULL;
+}
+
+static const char *
+read_fixed_precision(lldpctl_atom_t *atom, char *buffer, unsigned shift,
+    unsigned intbits, unsigned fltbits, const char *suffix)
+{
+	struct fp_number fp =
+	    fp_buftofp((unsigned char *)buffer, intbits, fltbits, shift);
+	char *result = fp_fptostr(fp, suffix);
+	if (result == NULL) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+		return NULL;
+	}
+
+	size_t len = strlen(result) + 1;
+	char *stored = _lldpctl_alloc_in_atom(atom, len);
+	if (stored == NULL) {
+		free(result);
+		return NULL;
+	}
+	strlcpy(stored, result, len);
+	free(result);
+	return stored;
+}
+
+static const char *
+_lldpctl_atom_get_str_med_location(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_med_location_t *m =
+	    (struct _lldpctl_atom_med_location_t *)atom;
+	char *value;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_med_location_format:
+		return map_lookup(port_med_location_map, m->location->format);
+	case lldpctl_k_med_location_geoid:
+		if (m->location->format != LLDP_MED_LOCFORMAT_COORD) break;
+		return map_lookup(port_med_geoid_map.map, m->location->data[15]);
+	case lldpctl_k_med_location_latitude:
+		if (m->location->format != LLDP_MED_LOCFORMAT_COORD) break;
+		return read_fixed_precision(atom, m->location->data, 0, 9, 25, "NS");
+	case lldpctl_k_med_location_longitude:
+		if (m->location->format != LLDP_MED_LOCFORMAT_COORD) break;
+		return read_fixed_precision(atom, m->location->data, 40, 9, 25, "EW");
+	case lldpctl_k_med_location_altitude:
+		if (m->location->format != LLDP_MED_LOCFORMAT_COORD) break;
+		return read_fixed_precision(atom, m->location->data, 84, 22, 8, NULL);
+	case lldpctl_k_med_location_altitude_unit:
+		if (m->location->format != LLDP_MED_LOCFORMAT_COORD) break;
+		switch (m->location->data[10] & 0xf0) {
+		case (LLDP_MED_LOCATION_ALTITUDE_UNIT_METER << 4):
+			return "m";
+		case (LLDP_MED_LOCATION_ALTITUDE_UNIT_FLOOR << 4):
+			return "floor";
+		}
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	case lldpctl_k_med_location_country:
+		if (m->location->format != LLDP_MED_LOCFORMAT_CIVIC) break;
+		if (m->location->data_len < 4) return NULL;
+		value = _lldpctl_alloc_in_atom(atom, 3);
+		if (!value) return NULL;
+		memcpy(value, m->location->data + 2, 2);
+		return value;
+	case lldpctl_k_med_location_elin:
+		if (m->location->format != LLDP_MED_LOCFORMAT_ELIN) break;
+		value = _lldpctl_alloc_in_atom(atom, m->location->data_len + 1);
+		if (!value) return NULL;
+		memcpy(value, m->location->data, m->location->data_len);
+		return value;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+	SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	return NULL;
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_str_med_location(lldpctl_atom_t *atom, lldpctl_key_t key,
+    const char *value)
+{
+	struct _lldpctl_atom_med_location_t *mloc =
+	    (struct _lldpctl_atom_med_location_t *)atom;
+	struct fp_number fp;
+	char *end = NULL;
+
+	/* Only local port can be modified */
+	if (!mloc->parent->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	switch (key) {
+	case lldpctl_k_med_location_latitude:
+		if (mloc->location->format != LLDP_MED_LOCFORMAT_COORD) goto bad;
+		if (mloc->location->data == NULL || mloc->location->data_len != 16)
+			goto bad;
+		if (value) fp = fp_strtofp(value, &end, 9, 25);
+		if (!end) goto bad;
+		if (end && *end != '\0') {
+			if (*(end + 1) != '\0') goto bad;
+			if (*end == 'S')
+				fp = fp_negate(fp);
+			else if (*end != 'N')
+				goto bad;
+		}
+		fp_fptobuf(fp, (unsigned char *)mloc->location->data, 0);
+		return atom;
+	case lldpctl_k_med_location_longitude:
+		if (mloc->location->format != LLDP_MED_LOCFORMAT_COORD) goto bad;
+		if (mloc->location->data == NULL || mloc->location->data_len != 16)
+			goto bad;
+		if (value) fp = fp_strtofp(value, &end, 9, 25);
+		if (!end) goto bad;
+		if (end && *end != '\0') {
+			if (*(end + 1) != '\0') goto bad;
+			if (*end == 'W')
+				fp = fp_negate(fp);
+			else if (*end != 'E')
+				goto bad;
+		}
+		fp_fptobuf(fp, (unsigned char *)mloc->location->data, 40);
+		return atom;
+	case lldpctl_k_med_location_altitude:
+		if (mloc->location->format != LLDP_MED_LOCFORMAT_COORD) goto bad;
+		if (mloc->location->data == NULL || mloc->location->data_len != 16)
+			goto bad;
+		if (value) fp = fp_strtofp(value, &end, 22, 8);
+		if (!end || *end != '\0') goto bad;
+		fp_fptobuf(fp, (unsigned char *)mloc->location->data, 84);
+		return atom;
+	case lldpctl_k_med_location_altitude_unit:
+		if (!value) goto bad;
+		if (mloc->location->format != LLDP_MED_LOCFORMAT_COORD) goto bad;
+		if (mloc->location->data == NULL || mloc->location->data_len != 16)
+			goto bad;
+		if (!strcmp(value, "m"))
+			return _lldpctl_atom_set_int_med_location(atom, key,
+			    LLDP_MED_LOCATION_ALTITUDE_UNIT_METER);
+		if (!strcmp(value, "f") || (!strcmp(value, "floor")))
+			return _lldpctl_atom_set_int_med_location(atom, key,
+			    LLDP_MED_LOCATION_ALTITUDE_UNIT_FLOOR);
+		goto bad;
+		break;
+	case lldpctl_k_med_location_geoid:
+		return _lldpctl_atom_set_int_med_location(atom, key,
+		    map_reverse_lookup(port_med_geoid_map.map, value));
+	case lldpctl_k_med_location_country:
+		if (mloc->location->format != LLDP_MED_LOCFORMAT_CIVIC) goto bad;
+		if (mloc->location->data == NULL || mloc->location->data_len < 3)
+			goto bad;
+		if (!value || strlen(value) != 2) goto bad;
+		memcpy(mloc->location->data + 2, value, 2);
+		return atom;
+	case lldpctl_k_med_location_elin:
+		if (!value) goto bad;
+		if (mloc->location->format != LLDP_MED_LOCFORMAT_ELIN) goto bad;
+		free(mloc->location->data);
+		mloc->location->data = calloc(1, strlen(value));
+		if (mloc->location->data == NULL) {
+			mloc->location->data_len = 0;
+			SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+			return NULL;
+		}
+		mloc->location->data_len = strlen(value);
+		memcpy(mloc->location->data, value, mloc->location->data_len);
+		return atom;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	return atom;
+bad:
+	SET_ERROR(atom->conn, LLDPCTL_ERR_BAD_VALUE);
+	return NULL;
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_get_atom_med_location(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_med_location_t *m =
+	    (struct _lldpctl_atom_med_location_t *)atom;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_med_location_ca_elements:
+		if (m->location->format != LLDP_MED_LOCFORMAT_CIVIC) {
+			SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+			return NULL;
+		}
+		return _lldpctl_new_atom(atom->conn, atom_med_caelements_list, m);
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_atom_med_location(lldpctl_atom_t *atom, lldpctl_key_t key,
+    lldpctl_atom_t *value)
+{
+	struct _lldpctl_atom_med_location_t *m =
+	    (struct _lldpctl_atom_med_location_t *)atom;
+	struct _lldpctl_atom_med_caelement_t *el;
+	uint8_t *new;
+
+	/* Only local port can be modified */
+	if (!m->parent->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	switch (key) {
+	case lldpctl_k_med_location_ca_elements:
+		if (value->type != atom_med_caelement) {
+			SET_ERROR(atom->conn, LLDPCTL_ERR_INCORRECT_ATOM_TYPE);
+			return NULL;
+		}
+		if (m->location->format != LLDP_MED_LOCFORMAT_CIVIC) goto bad;
+		if (m->location->data == NULL || m->location->data_len < 3) goto bad;
+
+		/* We append this element. */
+		el = (struct _lldpctl_atom_med_caelement_t *)value;
+		new = malloc(m->location->data_len + 2 + el->len);
+		if (new == NULL) {
+			SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+			return NULL;
+		}
+		memcpy(new, m->location->data, m->location->data_len);
+		new[m->location->data_len] = el->type;
+		new[m->location->data_len + 1] = el->len;
+		memcpy(new + m->location->data_len + 2, el->value, el->len);
+		new[0] += 2 + el->len;
+		free(m->location->data);
+		m->location->data = (char *)new;
+		m->location->data_len += 2 + el->len;
+		return atom;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+bad:
+	SET_ERROR(atom->conn, LLDPCTL_ERR_BAD_VALUE);
+	return NULL;
+}
+
+struct ca_iter {
+	uint8_t *data;
+	size_t data_len;
+};
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_iter_med_caelements_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_med_caelements_list_t *plist =
+	    (struct _lldpctl_atom_med_caelements_list_t *)atom;
+	struct ca_iter *iter;
+	if (plist->parent->location->data_len < 4 ||
+	    *(uint8_t *)plist->parent->location->data < 3 ||
+	    !(iter = _lldpctl_alloc_in_atom(atom, sizeof(struct ca_iter))))
+		return NULL;
+	iter->data = (uint8_t *)plist->parent->location->data + 4;
+	iter->data_len = *(uint8_t *)plist->parent->location->data - 3;
+	return (lldpctl_atom_iter_t *)iter;
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_next_med_caelements_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct ca_iter *cai = (struct ca_iter *)iter;
+	int len;
+	if (cai->data_len < 2) return NULL;
+	len = *((uint8_t *)cai->data + 1);
+	if (cai->data_len < 2 + len) return NULL;
+	cai->data += 2 + len;
+	cai->data_len -= 2 + len;
+	return (lldpctl_atom_iter_t *)cai;
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_value_med_caelements_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct _lldpctl_atom_med_caelements_list_t *plist =
+	    (struct _lldpctl_atom_med_caelements_list_t *)atom;
+	struct ca_iter *cai = (struct ca_iter *)iter;
+	size_t len;
+	if (cai->data_len < 2) return NULL;
+	len = *((uint8_t *)cai->data + 1);
+	if (cai->data_len < 2 + len) return NULL;
+	return _lldpctl_new_atom(atom->conn, atom_med_caelement, plist->parent,
+	    (int)*cai->data, cai->data + 2, len);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_create_med_caelements_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_med_caelements_list_t *plist =
+	    (struct _lldpctl_atom_med_caelements_list_t *)atom;
+	return _lldpctl_new_atom(atom->conn, atom_med_caelement, plist->parent, -1,
+	    NULL, 0);
+}
+
+static int
+_lldpctl_atom_new_med_caelement(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_med_caelement_t *el =
+	    (struct _lldpctl_atom_med_caelement_t *)atom;
+	el->parent = va_arg(ap, struct _lldpctl_atom_med_location_t *);
+	el->type = va_arg(ap, int);
+	el->value = va_arg(ap, uint8_t *);
+	el->len = va_arg(ap, size_t);
+	lldpctl_atom_inc_ref((lldpctl_atom_t *)el->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_med_caelement(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_med_caelement_t *el =
+	    (struct _lldpctl_atom_med_caelement_t *)atom;
+	lldpctl_atom_dec_ref((lldpctl_atom_t *)el->parent);
+}
+
+static long int
+_lldpctl_atom_get_int_med_caelement(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_med_caelement_t *m =
+	    (struct _lldpctl_atom_med_caelement_t *)atom;
+
+	switch (key) {
+	case lldpctl_k_med_civicaddress_type:
+		return m->type;
+	default:
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_int_med_caelement(lldpctl_atom_t *atom, lldpctl_key_t key,
+    long int value)
+{
+	struct _lldpctl_atom_med_caelement_t *el =
+	    (struct _lldpctl_atom_med_caelement_t *)atom;
+
+	/* Only local port can be modified */
+	if (!el->parent->parent->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	switch (key) {
+	case lldpctl_k_med_civicaddress_type:
+		if (value < 0 || value > 128) goto bad;
+		el->type = value;
+		return atom;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	return atom;
+bad:
+	SET_ERROR(atom->conn, LLDPCTL_ERR_BAD_VALUE);
+	return NULL;
+}
+
+static const char *
+_lldpctl_atom_get_str_med_caelement(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	char *value = NULL;
+	struct _lldpctl_atom_med_caelement_t *m =
+	    (struct _lldpctl_atom_med_caelement_t *)atom;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_med_civicaddress_type:
+		return map_lookup(civic_address_type_map.map, m->type);
+	case lldpctl_k_med_civicaddress_value:
+		value = _lldpctl_alloc_in_atom(atom, m->len + 1);
+		if (!value) return NULL;
+		memcpy(value, m->value, m->len);
+		return value;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_str_med_caelement(lldpctl_atom_t *atom, lldpctl_key_t key,
+    const char *value)
+{
+	struct _lldpctl_atom_med_caelement_t *el =
+	    (struct _lldpctl_atom_med_caelement_t *)atom;
+	size_t len;
+
+	/* Only local port can be modified */
+	if (!el->parent->parent->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	switch (key) {
+	case lldpctl_k_med_civicaddress_value:
+		if (!value) goto bad;
+		len = strlen(value) + 1;
+		if (len > 251) goto bad;
+		el->value = _lldpctl_alloc_in_atom(atom, len);
+		if (el->value == NULL) return NULL;
+		strlcpy((char *)el->value, value, len);
+		el->len = strlen(value);
+		return atom;
+	case lldpctl_k_med_civicaddress_type:
+		return _lldpctl_atom_set_int_med_caelement(atom, key,
+		    map_reverse_lookup(civic_address_type_map.map, value));
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	return atom;
+bad:
+	SET_ERROR(atom->conn, LLDPCTL_ERR_BAD_VALUE);
+	return NULL;
+}
+
+static int
+_lldpctl_atom_new_med_power(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_med_power_t *mpow =
+	    (struct _lldpctl_atom_med_power_t *)atom;
+	mpow->parent = va_arg(ap, struct _lldpctl_atom_port_t *);
+	lldpctl_atom_inc_ref((lldpctl_atom_t *)mpow->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_med_power(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_med_power_t *mpow =
+	    (struct _lldpctl_atom_med_power_t *)atom;
+	lldpctl_atom_dec_ref((lldpctl_atom_t *)mpow->parent);
+}
+
+static const char *
+_lldpctl_atom_get_str_med_power(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_med_power_t *mpow =
+	    (struct _lldpctl_atom_med_power_t *)atom;
+	struct lldpd_port *port = mpow->parent->port;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_med_power_type:
+		return map_lookup(port_med_pow_devicetype_map,
+		    port->p_med_power.devicetype);
+	case lldpctl_k_med_power_source:
+		return map_lookup(port_med_pow_source_map, port->p_med_power.source);
+	case lldpctl_k_med_power_priority:
+		return map_lookup(port_med_pow_priority_map.map,
+		    port->p_med_power.priority);
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static long int
+_lldpctl_atom_get_int_med_power(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_med_power_t *dpow =
+	    (struct _lldpctl_atom_med_power_t *)atom;
+	struct lldpd_port *port = dpow->parent->port;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_med_power_type:
+		return port->p_med_power.devicetype;
+	case lldpctl_k_med_power_source:
+		return port->p_med_power.source;
+	case lldpctl_k_med_power_priority:
+		return port->p_med_power.priority;
+	case lldpctl_k_med_power_val:
+		return port->p_med_power.val * 100;
+	default:
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_int_med_power(lldpctl_atom_t *atom, lldpctl_key_t key, long int value)
+{
+	struct _lldpctl_atom_med_power_t *dpow =
+	    (struct _lldpctl_atom_med_power_t *)atom;
+	struct lldpd_port *port = dpow->parent->port;
+
+	/* Only local port can be modified */
+	if (!dpow->parent->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	switch (key) {
+	case lldpctl_k_med_power_type:
+		switch (value) {
+		case 0:
+		case LLDP_MED_POW_TYPE_PSE:
+		case LLDP_MED_POW_TYPE_PD:
+			port->p_med_power.devicetype = value;
+			return atom;
+		default:
+			goto bad;
+		}
+	case lldpctl_k_med_power_source:
+		switch (value) {
+		case LLDP_MED_POW_SOURCE_PRIMARY:
+		case LLDP_MED_POW_SOURCE_BACKUP:
+			if (port->p_med_power.devicetype != LLDP_MED_POW_TYPE_PSE)
+				goto bad;
+			port->p_med_power.source = value;
+			return atom;
+		case LLDP_MED_POW_SOURCE_PSE:
+		case LLDP_MED_POW_SOURCE_LOCAL:
+		case LLDP_MED_POW_SOURCE_BOTH:
+			if (port->p_med_power.devicetype != LLDP_MED_POW_TYPE_PD)
+				goto bad;
+			port->p_med_power.source = value;
+			return atom;
+		case LLDP_MED_POW_SOURCE_UNKNOWN:
+			port->p_med_power.source = value;
+			return atom;
+		default:
+			goto bad;
+		}
+	case lldpctl_k_med_power_priority:
+		if (value < 0 || value > 3) goto bad;
+		port->p_med_power.priority = value;
+		return atom;
+	case lldpctl_k_med_power_val:
+		if (value < 0) goto bad;
+		port->p_med_power.val = value / 100;
+		return atom;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	return atom;
+bad:
+	SET_ERROR(atom->conn, LLDPCTL_ERR_BAD_VALUE);
+	return NULL;
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_str_med_power(lldpctl_atom_t *atom, lldpctl_key_t key,
+    const char *value)
+{
+	switch (key) {
+	case lldpctl_k_med_power_type:
+		return _lldpctl_atom_set_int_med_power(atom, key,
+		    map_reverse_lookup(port_med_pow_devicetype_map, value));
+	case lldpctl_k_med_power_source:
+		return _lldpctl_atom_set_int_med_power(atom, key,
+		    map_reverse_lookup(port_med_pow_source_map2, value));
+	case lldpctl_k_med_power_priority:
+		return _lldpctl_atom_set_int_med_power(atom, key,
+		    map_reverse_lookup(port_med_pow_priority_map.map, value));
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static struct atom_builder med_policies_list = { atom_med_policies_list,
+	sizeof(struct _lldpctl_atom_any_list_t), .init = _lldpctl_atom_new_any_list,
+	.free = _lldpctl_atom_free_any_list,
+	.iter = _lldpctl_atom_iter_med_policies_list,
+	.next = _lldpctl_atom_next_med_policies_list,
+	.value = _lldpctl_atom_value_med_policies_list };
+
+static struct atom_builder med_policy = { atom_med_policy,
+	sizeof(struct _lldpctl_atom_med_policy_t), .init = _lldpctl_atom_new_med_policy,
+	.free = _lldpctl_atom_free_med_policy,
+	.get_int = _lldpctl_atom_get_int_med_policy,
+	.set_int = _lldpctl_atom_set_int_med_policy,
+	.get_str = _lldpctl_atom_get_str_med_policy,
+	.set_str = _lldpctl_atom_set_str_med_policy };
+
+static struct atom_builder med_locations_list = { atom_med_locations_list,
+	sizeof(struct _lldpctl_atom_any_list_t), .init = _lldpctl_atom_new_any_list,
+	.free = _lldpctl_atom_free_any_list,
+	.iter = _lldpctl_atom_iter_med_locations_list,
+	.next = _lldpctl_atom_next_med_locations_list,
+	.value = _lldpctl_atom_value_med_locations_list };
+
+static struct atom_builder med_location = { atom_med_location,
+	sizeof(struct _lldpctl_atom_med_location_t),
+	.init = _lldpctl_atom_new_med_location, .free = _lldpctl_atom_free_med_location,
+	.get = _lldpctl_atom_get_atom_med_location,
+	.set = _lldpctl_atom_set_atom_med_location,
+	.get_int = _lldpctl_atom_get_int_med_location,
+	.set_int = _lldpctl_atom_set_int_med_location,
+	.get_str = _lldpctl_atom_get_str_med_location,
+	.set_str = _lldpctl_atom_set_str_med_location };
+
+static struct atom_builder med_caelements_list = { atom_med_caelements_list,
+	sizeof(struct _lldpctl_atom_med_caelements_list_t),
+	.init = _lldpctl_atom_new_any_list, .free = _lldpctl_atom_free_any_list,
+	.iter = _lldpctl_atom_iter_med_caelements_list,
+	.next = _lldpctl_atom_next_med_caelements_list,
+	.value = _lldpctl_atom_value_med_caelements_list,
+	.create = _lldpctl_atom_create_med_caelements_list };
+
+static struct atom_builder med_caelement = { atom_med_caelement,
+	sizeof(struct _lldpctl_atom_med_caelement_t),
+	.init = _lldpctl_atom_new_med_caelement,
+	.free = _lldpctl_atom_free_med_caelement,
+	.get_int = _lldpctl_atom_get_int_med_caelement,
+	.set_int = _lldpctl_atom_set_int_med_caelement,
+	.get_str = _lldpctl_atom_get_str_med_caelement,
+	.set_str = _lldpctl_atom_set_str_med_caelement };
+
+static struct atom_builder med_power = { atom_med_power,
+	sizeof(struct _lldpctl_atom_med_power_t), .init = _lldpctl_atom_new_med_power,
+	.free = _lldpctl_atom_free_med_power,
+	.get_int = _lldpctl_atom_get_int_med_power,
+	.set_int = _lldpctl_atom_set_int_med_power,
+	.get_str = _lldpctl_atom_get_str_med_power,
+	.set_str = _lldpctl_atom_set_str_med_power };
+
+ATOM_BUILDER_REGISTER(med_policies_list, 15);
+ATOM_BUILDER_REGISTER(med_policy, 16);
+ATOM_BUILDER_REGISTER(med_locations_list, 17);
+ATOM_BUILDER_REGISTER(med_location, 18);
+ATOM_BUILDER_REGISTER(med_caelements_list, 19);
+ATOM_BUILDER_REGISTER(med_caelement, 20);
+ATOM_BUILDER_REGISTER(med_power, 21);
+
+#endif
diff --git a/src/lib/atoms/mgmt.c b/src/lib/atoms/mgmt.c
new file mode 100644
index 0000000..095de76
--- /dev/null
+++ b/src/lib/atoms/mgmt.c
@@ -0,0 +1,149 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2015 Vincent Bernat <vincent@bernat.im>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "../lldpctl.h"
+#include "../../log.h"
+#include "../atom.h"
+#include "../helpers.h"
+
+static int
+_lldpctl_atom_new_mgmts_list(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_mgmts_list_t *plist =
+	    (struct _lldpctl_atom_mgmts_list_t *)atom;
+	plist->parent = va_arg(ap, lldpctl_atom_t *);
+	plist->chassis = va_arg(ap, struct lldpd_chassis *);
+	lldpctl_atom_inc_ref(plist->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_mgmts_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_mgmts_list_t *plist =
+	    (struct _lldpctl_atom_mgmts_list_t *)atom;
+	lldpctl_atom_dec_ref(plist->parent);
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_iter_mgmts_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_mgmts_list_t *plist =
+	    (struct _lldpctl_atom_mgmts_list_t *)atom;
+	return (lldpctl_atom_iter_t *)TAILQ_FIRST(&plist->chassis->c_mgmt);
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_next_mgmts_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct lldpd_mgmt *mgmt = (struct lldpd_mgmt *)iter;
+	return (lldpctl_atom_iter_t *)TAILQ_NEXT(mgmt, m_entries);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_value_mgmts_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct _lldpctl_atom_mgmts_list_t *plist =
+	    (struct _lldpctl_atom_mgmts_list_t *)atom;
+	struct lldpd_mgmt *mgmt = (struct lldpd_mgmt *)iter;
+	return _lldpctl_new_atom(atom->conn, atom_mgmt, plist->parent, mgmt);
+}
+
+static int
+_lldpctl_atom_new_mgmt(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_mgmt_t *mgmt = (struct _lldpctl_atom_mgmt_t *)atom;
+	mgmt->parent = va_arg(ap, lldpctl_atom_t *);
+	mgmt->mgmt = va_arg(ap, struct lldpd_mgmt *);
+	lldpctl_atom_inc_ref(mgmt->parent);
+	return 1;
+}
+
+static void
+_lldpctl_atom_free_mgmt(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_mgmt_t *mgmt = (struct _lldpctl_atom_mgmt_t *)atom;
+	lldpctl_atom_dec_ref(mgmt->parent);
+}
+
+static long int
+_lldpctl_atom_get_int_mgmt(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_mgmt_t *m = (struct _lldpctl_atom_mgmt_t *)atom;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_mgmt_iface_index:
+		return m->mgmt->m_iface;
+	default:
+		return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	}
+}
+
+static const char *
+_lldpctl_atom_get_str_mgmt(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	char *ipaddress = NULL;
+	size_t len;
+	int af;
+	struct _lldpctl_atom_mgmt_t *m = (struct _lldpctl_atom_mgmt_t *)atom;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_mgmt_ip:
+		switch (m->mgmt->m_family) {
+		case LLDPD_AF_IPV4:
+			len = INET_ADDRSTRLEN + 1;
+			af = AF_INET;
+			break;
+		case LLDPD_AF_IPV6:
+			len = INET6_ADDRSTRLEN + 1;
+			af = AF_INET6;
+			break;
+		default:
+			len = 0;
+		}
+		if (len == 0) break;
+		ipaddress = _lldpctl_alloc_in_atom(atom, len);
+		if (!ipaddress) return NULL;
+		if (inet_ntop(af, &m->mgmt->m_addr, ipaddress, len) == NULL) break;
+		return ipaddress;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+	SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+	return NULL;
+}
+
+static struct atom_builder mgmts_list = { atom_mgmts_list,
+	sizeof(struct _lldpctl_atom_mgmts_list_t), .init = _lldpctl_atom_new_mgmts_list,
+	.free = _lldpctl_atom_free_mgmts_list, .iter = _lldpctl_atom_iter_mgmts_list,
+	.next = _lldpctl_atom_next_mgmts_list,
+	.value = _lldpctl_atom_value_mgmts_list };
+
+static struct atom_builder mgmt = { atom_mgmt, sizeof(struct _lldpctl_atom_mgmt_t),
+	.init = _lldpctl_atom_new_mgmt, .free = _lldpctl_atom_free_mgmt,
+	.get_int = _lldpctl_atom_get_int_mgmt, .get_str = _lldpctl_atom_get_str_mgmt };
+
+ATOM_BUILDER_REGISTER(mgmts_list, 6);
+ATOM_BUILDER_REGISTER(mgmt, 7);
diff --git a/src/lib/atoms/port.c b/src/lib/atoms/port.c
new file mode 100644
index 0000000..f99e18b
--- /dev/null
+++ b/src/lib/atoms/port.c
@@ -0,0 +1,862 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2015 Vincent Bernat <vincent@bernat.im>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "../lldpctl.h"
+#include "../../log.h"
+#include "../atom.h"
+#include "../helpers.h"
+
+static struct atom_map lldpd_protocol_map = { .key = lldpctl_k_port_protocol,
+	.map = {
+	    { LLDPD_MODE_LLDP, "LLDP" },
+	    { LLDPD_MODE_CDPV1, "CDPv1" },
+	    { LLDPD_MODE_CDPV2, "CDPv2" },
+	    { LLDPD_MODE_EDP, "EDP" },
+	    { LLDPD_MODE_FDP, "FDP" },
+	    { LLDPD_MODE_SONMP, "SONMP" },
+	    { 0, NULL },
+	} };
+
+ATOM_MAP_REGISTER(lldpd_protocol_map, 3);
+
+static lldpctl_map_t port_id_subtype_map[] = {
+	{ LLDP_PORTID_SUBTYPE_IFNAME, "ifname" },
+	{ LLDP_PORTID_SUBTYPE_IFALIAS, "ifalias" },
+	{ LLDP_PORTID_SUBTYPE_LOCAL, "local" },
+	{ LLDP_PORTID_SUBTYPE_LLADDR, "mac" },
+	{ LLDP_PORTID_SUBTYPE_ADDR, "ip" },
+	{ LLDP_PORTID_SUBTYPE_PORT, "unhandled" },
+	{ LLDP_PORTID_SUBTYPE_AGENTCID, "unhandled" },
+	{ 0, NULL },
+};
+
+static struct atom_map port_status_map = { .key = lldpctl_k_port_status,
+	.map = {
+	    { LLDPD_RXTX_TXONLY, "TX only" },
+	    { LLDPD_RXTX_RXONLY, "RX only" },
+	    { LLDPD_RXTX_DISABLED, "disabled" },
+	    { LLDPD_RXTX_BOTH, "RX and TX" },
+	    { 0, NULL },
+	} };
+
+ATOM_MAP_REGISTER(port_status_map, 3);
+
+#ifdef ENABLE_DOT3
+static lldpctl_map_t operational_mau_type_values[] = {
+	{ LLDP_DOT3_MAU_AUI, "AUI - No internal MAU, view from AUI" },
+	{ LLDP_DOT3_MAU_10BASE5, "10Base5 - Thick coax MAU" },
+	{ LLDP_DOT3_MAU_FOIRL, "Foirl - FOIRL MAU" },
+	{ LLDP_DOT3_MAU_10BASE2, "10Base2 - Thin coax MAU" },
+	{ LLDP_DOT3_MAU_10BASET, "10BaseT - UTP MAU" },
+	{ LLDP_DOT3_MAU_10BASEFP, "10BaseFP - Passive fiber MAU" },
+	{ LLDP_DOT3_MAU_10BASEFB, "10BaseFB - Sync fiber MAU" },
+	{ LLDP_DOT3_MAU_10BASEFL, "10BaseFL - Async fiber MAU" },
+	{ LLDP_DOT3_MAU_10BROAD36, "10Broad36 - Broadband DTE MAU" },
+	{ LLDP_DOT3_MAU_10BASETHD, "10BaseTHD - UTP MAU, half duplex mode" },
+	{ LLDP_DOT3_MAU_10BASETFD, "10BaseTFD - UTP MAU, full duplex mode" },
+	{ LLDP_DOT3_MAU_10BASEFLHD, "10BaseFLHD - Async fiber MAU, half duplex mode" },
+	{ LLDP_DOT3_MAU_10BASEFLFD, "10BaseFLDF - Async fiber MAU, full duplex mode" },
+	{ LLDP_DOT3_MAU_100BASET4, "100BaseT4 - 4 pair category 3 UTP" },
+	{ LLDP_DOT3_MAU_100BASETXHD,
+	    "100BaseTXHD - 2 pair category 5 UTP, half duplex mode" },
+	{ LLDP_DOT3_MAU_100BASETXFD,
+	    "100BaseTXFD - 2 pair category 5 UTP, full duplex mode" },
+	{ LLDP_DOT3_MAU_100BASEFXHD,
+	    "100BaseFXHD - X fiber over PMT, half duplex mode" },
+	{ LLDP_DOT3_MAU_100BASEFXFD,
+	    "100BaseFXFD - X fiber over PMT, full duplex mode" },
+	{ LLDP_DOT3_MAU_100BASET2HD,
+	    "100BaseT2HD - 2 pair category 3 UTP, half duplex mode" },
+	{ LLDP_DOT3_MAU_100BASET2FD,
+	    "100BaseT2FD - 2 pair category 3 UTP, full duplex mode" },
+	{ LLDP_DOT3_MAU_1000BASEXHD,
+	    "1000BaseXHD - PCS/PMA, unknown PMD, half duplex mode" },
+	{ LLDP_DOT3_MAU_1000BASEXFD,
+	    "1000BaseXFD - PCS/PMA, unknown PMD, full duplex mode" },
+	{ LLDP_DOT3_MAU_1000BASELXHD,
+	    "1000BaseLXHD - Fiber over long-wavelength laser, half duplex mode" },
+	{ LLDP_DOT3_MAU_1000BASELXFD,
+	    "1000BaseLXFD - Fiber over long-wavelength laser, full duplex mode" },
+	{ LLDP_DOT3_MAU_1000BASESXHD,
+	    "1000BaseSXHD - Fiber over short-wavelength laser, half duplex mode" },
+	{ LLDP_DOT3_MAU_1000BASESXFD,
+	    "1000BaseSXFD - Fiber over short-wavelength laser, full duplex mode" },
+	{ LLDP_DOT3_MAU_1000BASECXHD,
+	    "1000BaseCXHD - Copper over 150-Ohm balanced cable, half duplex mode" },
+	{ LLDP_DOT3_MAU_1000BASECXFD,
+	    "1000BaseCXFD - Copper over 150-Ohm balanced cable, full duplex mode" },
+	{ LLDP_DOT3_MAU_1000BASETHD,
+	    "1000BaseTHD - Four-pair Category 5 UTP, half duplex mode" },
+	{ LLDP_DOT3_MAU_1000BASETFD,
+	    "1000BaseTFD - Four-pair Category 5 UTP, full duplex mode" },
+	{ LLDP_DOT3_MAU_10GIGBASEX, "10GigBaseX - X PCS/PMA, unknown PMD." },
+	{ LLDP_DOT3_MAU_10GIGBASELX4, "10GigBaseLX4 - X fiber over WWDM optics" },
+	{ LLDP_DOT3_MAU_10GIGBASER, "10GigBaseR - R PCS/PMA, unknown PMD." },
+	{ LLDP_DOT3_MAU_10GIGBASEER, "10GigBaseER - R fiber over 1550 nm optics" },
+	{ LLDP_DOT3_MAU_10GIGBASELR, "10GigBaseLR - R fiber over 1310 nm optics" },
+	{ LLDP_DOT3_MAU_10GIGBASESR, "10GigBaseSR - R fiber over 850 nm optics" },
+	{ LLDP_DOT3_MAU_10GIGBASEW, "10GigBaseW - W PCS/PMA, unknown PMD." },
+	{ LLDP_DOT3_MAU_10GIGBASEEW, "10GigBaseEW - W fiber over 1550 nm optics" },
+	{ LLDP_DOT3_MAU_10GIGBASELW, "10GigBaseLW - W fiber over 1310 nm optics" },
+	{ LLDP_DOT3_MAU_10GIGBASESW, "10GigBaseSW - W fiber over 850 nm optics" },
+	{ LLDP_DOT3_MAU_10GIGBASECX4,
+	    "10GigBaseCX4 - X copper over 8 pair 100-Ohm balanced cable" },
+	{ LLDP_DOT3_MAU_2BASETL,
+	    "2BaseTL - Voice grade UTP copper, up to 2700m, optional PAF" },
+	{ LLDP_DOT3_MAU_10PASSTS,
+	    "10PassTS - Voice grade UTP copper, up to 750m, optional PAF" },
+	{ LLDP_DOT3_MAU_100BASEBX10D,
+	    "100BaseBX10D - One single-mode fiber OLT, long wavelength, 10km" },
+	{ LLDP_DOT3_MAU_100BASEBX10U,
+	    "100BaseBX10U - One single-mode fiber ONU, long wavelength, 10km" },
+	{ LLDP_DOT3_MAU_100BASELX10,
+	    "100BaseLX10 - Two single-mode fibers, long wavelength, 10km" },
+	{ LLDP_DOT3_MAU_1000BASEBX10D,
+	    "1000BaseBX10D - One single-mode fiber OLT, long wavelength, 10km" },
+	{ LLDP_DOT3_MAU_1000BASEBX10U,
+	    "1000BaseBX10U - One single-mode fiber ONU, long wavelength, 10km" },
+	{ LLDP_DOT3_MAU_1000BASELX10,
+	    "1000BaseLX10 - Two sigle-mode fiber, long wavelength, 10km" },
+	{ LLDP_DOT3_MAU_1000BASEPX10D,
+	    "1000BasePX10D - One single-mode fiber EPON OLT, 10km" },
+	{ LLDP_DOT3_MAU_1000BASEPX10U,
+	    "1000BasePX10U - One single-mode fiber EPON ONU, 10km" },
+	{ LLDP_DOT3_MAU_1000BASEPX20D,
+	    "1000BasePX20D - One single-mode fiber EPON OLT, 20km" },
+	{ LLDP_DOT3_MAU_1000BASEPX20U,
+	    "1000BasePX20U - One single-mode fiber EPON ONU, 20km" },
+	{ LLDP_DOT3_MAU_10GBASET,
+	    "10GbaseT - Four-pair Category 6A or better, full duplex mode only" },
+	{ LLDP_DOT3_MAU_10GBASELRM,
+	    "10GbaseLRM - R multimode fiber over 1310 nm optics" },
+	{ LLDP_DOT3_MAU_1000BASEKX, "1000baseKX - X backplane, full duplex mode only" },
+	{ LLDP_DOT3_MAU_10GBASEKX4,
+	    "10GbaseKX4 - 4 lane X backplane, full duplex mode only" },
+	{ LLDP_DOT3_MAU_10GBASEKR, "10GbaseKR - R backplane, full duplex mode only" },
+	{ LLDP_DOT3_MAU_10G1GBASEPRXD1,
+	    "10G1GbasePRXD1 - One single-mode fiber asymmetric-rate EPON OLT, low power budget (PRX10)" },
+	{ LLDP_DOT3_MAU_10G1GBASEPRXD2,
+	    "10G1GbasePRXD2 - One single-mode fiber asymmetric-rate EPON OLT, medium power budget (PRX20)" },
+	{ LLDP_DOT3_MAU_10G1GBASEPRXD3,
+	    "10G1GbasePRXD3 - One single-mode fiber asymmetric-rate EPON OLT, high power budget (PRX30)" },
+	{ LLDP_DOT3_MAU_10G1GBASEPRXU1,
+	    "10G1GbasePRXU1 - One single-mode fiber asymmetric-rate EPON ONU, low power budget (PRX10)" },
+	{ LLDP_DOT3_MAU_10G1GBASEPRXU2,
+	    "10G1GbasePRXU2 - One single-mode fiber asymmetric-rate EPON ONU, medium power budget (PRX20)" },
+	{ LLDP_DOT3_MAU_10G1GBASEPRXU3,
+	    "10G1GbasePRXU3 - One single-mode fiber asymmetric-rate EPON ONU, high power budget (PRX30)" },
+	{ LLDP_DOT3_MAU_10GBASEPRD1,
+	    "10GbasePRD1 - One single-mode fiber symmetric-rate EPON OLT, low power budget (PR10)" },
+	{ LLDP_DOT3_MAU_10GBASEPRD2,
+	    "10GbasePRD2 - One single-mode fiber symmetric-rate EPON OLT, medium power budget (PR20)" },
+	{ LLDP_DOT3_MAU_10GBASEPRD3,
+	    "10GbasePRD3 - One single-mode fiber symmetric-rate EPON OLT, high power budget (PR30)" },
+	{ LLDP_DOT3_MAU_10GBASEPRU1,
+	    "10GbasePRU1 - One single-mode fiber symmetric-rate EPON ONU, low and medium power budget" },
+	{ LLDP_DOT3_MAU_10GBASEPRU3,
+	    "10GbasePRU3 - One single-mode fiber symmetric-rate EPON ONU, high power budget (PR30)" },
+	{ LLDP_DOT3_MAU_40GBASEKR4,
+	    "40GbaseKR4 - 40GBASE-R PCS/PMA over an electrical backplane" },
+	{ LLDP_DOT3_MAU_40GBASECR4,
+	    "40GbaseCR4 - 40GBASE-R PCS/PMA over 4 lane shielded copper balanced cable" },
+	{ LLDP_DOT3_MAU_40GBASESR4,
+	    "40GbaseSR4 - 40GBASE-R PCS/PMA over 4 lane multimode fiber" },
+	{ LLDP_DOT3_MAU_40GBASEFR,
+	    "40GbaseFR - 40GBASE-R PCS/PMA over single mode fiber" },
+	{ LLDP_DOT3_MAU_40GBASELR4,
+	    "40GbaseLR4 - 40GBASE-R PCS/PMA over 4 WDM lane single mode fiber" },
+	{ LLDP_DOT3_MAU_100GBASECR10,
+	    "100GbaseCR10 - 100GBASE-R PCS/PMA over 10 lane shielded copper balanced cable" },
+	{ LLDP_DOT3_MAU_100GBASESR10,
+	    "100GbaseSR10 - 100GBASE-R PCS/PMA over 10 lane multimode fiber" },
+	{ LLDP_DOT3_MAU_100GBASELR4,
+	    "100GbaseLR4 - 100GBASE-R PCS/PMA over 4 WDM lane single mode fiber, long reach" },
+	{ LLDP_DOT3_MAU_100GBASEER4,
+	    "100GbaseER4 - 100GBASE-R PCS/PMA over 4 WDM lane single mode fiber PMD, extended reach" },
+	{ LLDP_DOT3_MAU_1000BASET1,
+	    "1000baseT1 - 1000BASE-T1 single balanced twisted-pair copper cabling PHY" },
+	{ LLDP_DOT3_MAU_1000BASEPX30D,
+	    "1000basePX30D - One single-mode fiber EPON OLT, 20km, 1:32 split ratio" },
+	{ LLDP_DOT3_MAU_1000BASEPX30U,
+	    "1000basePX30U - One single-mode fiber EPON ONU, 20km, 1:32 split ratio" },
+	{ LLDP_DOT3_MAU_1000BASEPX40D,
+	    "1000basePX40D - One single-mode fiber EPON OLT, 20km, 1:64 split ratio" },
+	{ LLDP_DOT3_MAU_1000BASEPX40U,
+	    "1000basePX40U - One single-mode fiber EPON ONU, 20km, 1:64 split ratio" },
+	{ LLDP_DOT3_MAU_10G1GBASEPRXD4,
+	    "10G1GbasePRXD4 - One single-mode fiber asymmetric-rate EPON OLT, supporting  extended power budget (PRX40)" },
+	{ LLDP_DOT3_MAU_10G1GBASEPRXU4,
+	    "10G1GbasePRXU4 - One single-mode fiber asymmetric-rate EPON ONU, supporting  extended power budget (PRX40)" },
+	{ LLDP_DOT3_MAU_10GBASEPRD4,
+	    "10GbasePRD4 - One single-mode fiber symmetric-rate EPON OLT, supporting  extended power budget (PR40)" },
+	{ LLDP_DOT3_MAU_10GBASEPRU4,
+	    "10GbasePRU4 - One single-mode fiber symmetric-rate EPON ONU, supporting  extended power budget (PR40)" },
+	{ LLDP_DOT3_MAU_25GBASECR,
+	    "25GbaseCR - 25GBASE-R PCS/PMA over shielded balanced copper cable" },
+	{ LLDP_DOT3_MAU_25GBASECRS,
+	    "25GbaseCRS - 25GBASE-R PCS/PMA over shielded balanced copper cable  without RS-FEC" },
+	{ LLDP_DOT3_MAU_25GBASEKR,
+	    "25GbaseKR - 25GBASE-R PCS/PMA over an electrical backplane" },
+	{ LLDP_DOT3_MAU_25GBASEKRS,
+	    "25GbaseKRS - 25GBASE-R PCS/PMA over an electrical backplane without RS-FEC" },
+	{ LLDP_DOT3_MAU_25GBASER, "25GbaseR - 25GBASE-R PCS/PMA over undefined PMD" },
+	{ LLDP_DOT3_MAU_25GBASESR,
+	    "25GbaseSR - 25GBASE-R PCS/PMA over multimode fiber" },
+	{ LLDP_DOT3_MAU_25GBASET,
+	    "25GbaseT - Four-pair twisted-pair balanced copper cabling" },
+	{ LLDP_DOT3_MAU_40GBASEER4,
+	    "40GbaseER4 - 40GBASE-R PCS/PMA over 4 WDM lane single mode fiber" },
+	{ LLDP_DOT3_MAU_40GBASER,
+	    "40GbaseR - 40GBASE-R PCS as over undefined PMA/PMD" },
+	{ LLDP_DOT3_MAU_40GBASET,
+	    "40GbaseT - Four-pair twisted-pair balanced copper cabling" },
+	{ LLDP_DOT3_MAU_100GBASECR4,
+	    "100GbaseCR4 - 100GBASE-R PCS/PMA over 4 lane shielded copper balanced cable" },
+	{ LLDP_DOT3_MAU_100GBASEKR4,
+	    "100GbaseKR4 - 100GBASE-R PCS/PMA over an electrical backplane" },
+	{ LLDP_DOT3_MAU_100GBASEKP4,
+	    "100GbaseKP4 - 100GBASE-P PCS/PMA over an electrical backplane PMD" },
+	{ LLDP_DOT3_MAU_100GBASER,
+	    "100GbaseR - 100GBASE-R Multi-lane PCS over undefined PMA/PMD" },
+	{ LLDP_DOT3_MAU_100GBASESR4,
+	    "100GbaseSR4 - 100GBASE-R PCS/PMA over 4 lane multimode fiber" },
+	{ LLDP_DOT3_MAU_2P5GIGT,
+	    "2p5GigT - 2.5GBASE-T Four-pair twisted-pair balanced copper cabling PHY" },
+	{ LLDP_DOT3_MAU_5GIGT,
+	    "5GigT - 5GBASE-T Four-pair twisted-pair balanced copper cabling PHY" },
+	{ LLDP_DOT3_MAU_100BASET1,
+	    "100baseT1 - 100BASE-T1 Single balanced twisted-pair copper cabling PHY" },
+	{ LLDP_DOT3_MAU_1000BASERHA,
+	    "1000baseRHA - 1000BASE-RHA Plastic optical fiber PHY" },
+	{ LLDP_DOT3_MAU_1000BASERHB,
+	    "1000baseRHB - 1000BASE-RHB Plastic optical fiber PHY" },
+	{ LLDP_DOT3_MAU_1000BASERHC,
+	    "1000baseRHC - 1000BASE-RHC Plastic optical fiber PHY" },
+	{ LLDP_DOT3_MAU_2P5GBASEKX,
+	    "2p5GbaseKX - 2.5GBASE-X PMD over an electrical backplane" },
+	{ LLDP_DOT3_MAU_2P5GBASEX,
+	    "2p5GbaseX - 2.5GBASE-X PCS/PMA over undefined PMD" },
+	{ LLDP_DOT3_MAU_5GBASEKR,
+	    "5GbaseKR - 5GBASE-KR PMD over an electrical backplane" },
+	{ LLDP_DOT3_MAU_5GBASER, "5GbaseR - 5GBASE-R PCS/PMA over undefined PMD" },
+	{ LLDP_DOT3_MAU_10GPASSXR,
+	    "10GpassXR - Coax cable distribution network PHY continuous downstream/burst mode upstream PHY" },
+	{ LLDP_DOT3_MAU_25GBASELR,
+	    "25GbaseLR - 25GBASE-R PCS/PMA over single-mode fiber PMD, with long reach" },
+	{ LLDP_DOT3_MAU_25GBASEER,
+	    "25GbaseER - 25GBASE-R PCS/PMA over single-mode fiber PMD, with extended reach" },
+	{ LLDP_DOT3_MAU_50GBASER,
+	    "50GbaseR - 50GBASE-R Multi-lane PCS over undefined PMA/PMD" },
+	{ LLDP_DOT3_MAU_50GBASECR,
+	    "50GbaseCR - 50GBASE-R PCS/PMA over shielded copper balanced cable PMD" },
+	{ LLDP_DOT3_MAU_50GBASEKR,
+	    "50GbaseKR - 50GBASE-R PCS/PMA over an electrical backplane PMD" },
+	{ LLDP_DOT3_MAU_50GBASESR,
+	    "50GbaseSR - 50GBASE-R PCS/PMA over multimode fiber PMD" },
+	{ LLDP_DOT3_MAU_50GBASEFR,
+	    "50GbaseFR - 50GBASE-R PCS/PMA over single mode fiber PMD with reach up to at least 2 km" },
+	{ LLDP_DOT3_MAU_50GBASELR,
+	    "50GbaseLR - 50GBASE-R PCS/PMA over single mode fiber PMD with reach up to at least 10 km" },
+	{ LLDP_DOT3_MAU_50GBASEER,
+	    "50GbaseER - 50GBASE-R PCS/PMA over single-mode fiber PMD with reach up to at least 40 km" },
+	{ LLDP_DOT3_MAU_100GBASECR2,
+	    "100GbaseCR2 - 100GBASE-R PCS/PMA over 2 lane shielded copper balanced cable PMD" },
+	{ LLDP_DOT3_MAU_100GBASEKR2,
+	    "100GbaseKR2 - 100GBASE-R PCS/PMA over an electrical backplane PMD" },
+	{ LLDP_DOT3_MAU_100GBASESR2,
+	    "100GbaseSR2 - 100GBASE-R PCS/PMA over 2 lane multimode fiber PMD" },
+	{ LLDP_DOT3_MAU_100GBASEDR,
+	    "100GbaseDR - 100GBASE-R PCS/PMA over single mode fiber PMD" },
+	{ LLDP_DOT3_MAU_200GBASER,
+	    "200GbaseR - 200GBASE-R Multi-lane PCS over undefined PMA/PMD" },
+	{ LLDP_DOT3_MAU_200GBASEDR4,
+	    "200GbaseDR4 - 200GBASE-R PCS/PMA over 4-lane single-mode fiber PMD" },
+	{ LLDP_DOT3_MAU_200GBASEFR4,
+	    "200GbaseFR4 - 200GBASE-R PCS/PMA over 4 WDM lane single-mode fiber PMD with reach up to at least 2 km" },
+	{ LLDP_DOT3_MAU_200GBASELR4,
+	    "200GbaseLR4 - 200GBASE-R PCS/PMA over 4 WDM lane single-mode fiber PMD with reach up to at least 10 km" },
+	{ LLDP_DOT3_MAU_200GBASECR4,
+	    "200GbaseCR4 - 200GBASE-R PCS/PMA over 4 lane shielded copper balanced cable PMD" },
+	{ LLDP_DOT3_MAU_200GBASEKR4,
+	    "200GbaseKR4 - 200GBASE-R PCS/PMA over an electrical backplane PMD" },
+	{ LLDP_DOT3_MAU_200GBASESR4,
+	    "200GbaseSR4 - 200GBASE-R PCS/PMA over 4 lane multimode fiber PMD" },
+	{ LLDP_DOT3_MAU_200GBASEER4,
+	    "200GbaseER4 - 200GBASE-R PCS/PMA over 4 WDM lane single-mode fiber PMD with reach up to at least 40 km" },
+	{ LLDP_DOT3_MAU_400GBASER,
+	    "400GbaseR - 400GBASE-R Multi-lane PCS over undefined PMA/PMD" },
+	{ LLDP_DOT3_MAU_400GBASESR16,
+	    "400GbaseSR16 - 400GBASE-R PCS/PMA over 16-lane multimode fiber PMD" },
+	{ LLDP_DOT3_MAU_400GBASEDR4,
+	    "400GbaseDR4 - 400GBASE-R PCS/PMA over 4-lane single-mode fiber PMD" },
+	{ LLDP_DOT3_MAU_400GBASEFR8,
+	    "400GbaseFR8 - 400GBASE-R PCS/PMA over 8 WDM lane single-mode fiber PMD with reach up to at least 2 km" },
+	{ LLDP_DOT3_MAU_400GBASELR8,
+	    "400GbaseLR8 - 400GBASE-R PCS/PMA over 8 WDM lane single-mode fiber PMD with reach up to at least 10 km" },
+	{ LLDP_DOT3_MAU_400GBASEER8,
+	    "400GbaseER8 - 400GBASE-R PCS/PMA over 8 WDM lane single-mode fiber PMD with reach up to at least 40 km" },
+	{ LLDP_DOT3_MAU_10BASET1L, "10baseT1L - 10BASE-T1L Single balanced pair PHY" },
+	{ LLDP_DOT3_MAU_10BASET1SHD,
+	    "10baseT1SHD - 10BASE-T1S Single balanced pair PHY, half duplex mode" },
+	{ LLDP_DOT3_MAU_10BASET1SMD,
+	    "10baseT1SMD - 10BASE-T1S Single balanced pair PHY, multidrop mode" },
+	{ LLDP_DOT3_MAU_10BASET1SFD,
+	    "10baseT1SFD - 10BASE-T1S Single balanced pair PHY, full duplex mode" },
+	{ 0, NULL }
+};
+#endif
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_iter_ports_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_any_list_t *plist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	return (lldpctl_atom_iter_t *)TAILQ_FIRST(&plist->parent->hardware->h_rports);
+}
+
+static lldpctl_atom_iter_t *
+_lldpctl_atom_next_ports_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct lldpd_port *port = (struct lldpd_port *)iter;
+	return (lldpctl_atom_iter_t *)TAILQ_NEXT(port, p_entries);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_value_ports_list(lldpctl_atom_t *atom, lldpctl_atom_iter_t *iter)
+{
+	struct lldpd_port *port = (struct lldpd_port *)iter;
+	return _lldpctl_new_atom(atom->conn, atom_port, 0, NULL, port,
+	    ((struct _lldpctl_atom_any_list_t *)atom)->parent);
+}
+
+static int
+_lldpctl_atom_new_port(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_port_t *port = (struct _lldpctl_atom_port_t *)atom;
+	port->local = va_arg(ap, int);
+	port->hardware = va_arg(ap, struct lldpd_hardware *);
+	port->port = va_arg(ap, struct lldpd_port *);
+	port->parent = va_arg(ap, struct _lldpctl_atom_port_t *);
+	if (port->parent) lldpctl_atom_inc_ref((lldpctl_atom_t *)port->parent);
+
+	if (port->port) {
+		/* Internal atom. We are the parent, but our reference count is
+		 * not incremented. */
+		port->chassis = _lldpctl_new_atom(atom->conn, atom_chassis,
+		    port->port->p_chassis, port, 1);
+	}
+	return 1;
+}
+
+TAILQ_HEAD(chassis_list, lldpd_chassis);
+
+static void
+add_chassis(struct chassis_list *chassis_list, struct lldpd_chassis *chassis)
+{
+	struct lldpd_chassis *one_chassis;
+	TAILQ_FOREACH (one_chassis, chassis_list, c_entries) {
+		if (one_chassis == chassis) return;
+	}
+	TAILQ_INSERT_TAIL(chassis_list, chassis, c_entries);
+}
+
+static void
+_lldpctl_atom_free_port(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_port_t *port = (struct _lldpctl_atom_port_t *)atom;
+	struct lldpd_hardware *hardware = port->hardware;
+	struct lldpd_chassis *one_chassis, *one_chassis_next;
+	struct lldpd_port *one_port;
+
+	/* Free internal chassis atom. Should be freed immediately since we
+	 * should have the only reference. */
+	lldpctl_atom_dec_ref((lldpctl_atom_t *)port->chassis);
+
+	/* We need to free the whole struct lldpd_hardware: local port, local
+	 * chassis and remote ports... The same chassis may be present several
+	 * times. We build a list of chassis (we don't use reference count). */
+	struct chassis_list chassis_list;
+	TAILQ_INIT(&chassis_list);
+
+	if (port->parent)
+		lldpctl_atom_dec_ref((lldpctl_atom_t *)port->parent);
+	else if (!hardware && port->port) {
+		/* No parent, no hardware, we assume a single neighbor: one
+		 * port, one chassis. */
+		if (port->port->p_chassis) {
+			lldpd_chassis_cleanup(port->port->p_chassis, 1);
+			port->port->p_chassis = NULL;
+		}
+		lldpd_port_cleanup(port->port, 1);
+		free(port->port);
+	}
+	if (!hardware) return;
+
+	add_chassis(&chassis_list, port->port->p_chassis);
+	TAILQ_FOREACH (one_port, &hardware->h_rports, p_entries)
+		add_chassis(&chassis_list, one_port->p_chassis);
+
+	/* Free hardware port */
+	lldpd_remote_cleanup(hardware, NULL, 1);
+	lldpd_port_cleanup(port->port, 1);
+	free(port->hardware);
+
+	/* Free list of chassis */
+	for (one_chassis = TAILQ_FIRST(&chassis_list); one_chassis != NULL;
+	     one_chassis = one_chassis_next) {
+		one_chassis_next = TAILQ_NEXT(one_chassis, c_entries);
+		lldpd_chassis_cleanup(one_chassis, 1);
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_get_atom_port(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_port_t *p = (struct _lldpctl_atom_port_t *)atom;
+	struct lldpd_port *port = p->port;
+	struct lldpd_hardware *hardware = p->hardware;
+
+	/* Local port only */
+	if (hardware != NULL) {
+		switch (key) {
+		case lldpctl_k_port_neighbors:
+			return _lldpctl_new_atom(atom->conn, atom_ports_list, p);
+		default:
+			break;
+		}
+	}
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_port_chassis:
+		if (port->p_chassis) {
+			return _lldpctl_new_atom(atom->conn, atom_chassis,
+			    port->p_chassis, p, 0);
+		}
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+#ifdef ENABLE_DOT3
+	case lldpctl_k_port_dot3_power:
+		return _lldpctl_new_atom(atom->conn, atom_dot3_power, p);
+#endif
+#ifdef ENABLE_DOT1
+	case lldpctl_k_port_vlans:
+		return _lldpctl_new_atom(atom->conn, atom_vlans_list, p);
+	case lldpctl_k_port_ppvids:
+		return _lldpctl_new_atom(atom->conn, atom_ppvids_list, p);
+	case lldpctl_k_port_pis:
+		return _lldpctl_new_atom(atom->conn, atom_pis_list, p);
+#endif
+#ifdef ENABLE_LLDPMED
+	case lldpctl_k_port_med_policies:
+		return _lldpctl_new_atom(atom->conn, atom_med_policies_list, p);
+	case lldpctl_k_port_med_locations:
+		return _lldpctl_new_atom(atom->conn, atom_med_locations_list, p);
+	case lldpctl_k_port_med_power:
+		return _lldpctl_new_atom(atom->conn, atom_med_power, p);
+#endif
+#ifdef ENABLE_CUSTOM
+	case lldpctl_k_custom_tlvs:
+		return _lldpctl_new_atom(atom->conn, atom_custom_list, p);
+#endif
+	default:
+		/* Compatibility: query the associated chassis too */
+		if (port->p_chassis) return lldpctl_atom_get(p->chassis, key);
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_atom_port(lldpctl_atom_t *atom, lldpctl_key_t key,
+    lldpctl_atom_t *value)
+{
+	struct _lldpctl_atom_port_t *p = (struct _lldpctl_atom_port_t *)atom;
+	struct lldpd_hardware *hardware = p->hardware;
+	struct lldpd_port_set set = {};
+	int rc;
+	char *canary = NULL;
+
+#ifdef ENABLE_DOT3
+	struct _lldpctl_atom_dot3_power_t *dpow;
+#endif
+#ifdef ENABLE_LLDPMED
+	struct _lldpctl_atom_med_power_t *mpow;
+	struct _lldpctl_atom_med_policy_t *mpol;
+	struct _lldpctl_atom_med_location_t *mloc;
+#endif
+#ifdef ENABLE_CUSTOM
+	struct _lldpctl_atom_custom_t *custom;
+#endif
+
+	/* Local and default port only */
+	if (!p->local) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	set.vlan_tx_enabled = -1;
+
+	switch (key) {
+	case lldpctl_k_port_id:
+		set.local_id = p->port->p_id;
+		break;
+	case lldpctl_k_port_descr:
+		set.local_descr = p->port->p_descr;
+		break;
+	case lldpctl_k_port_status:
+		set.rxtx = LLDPD_RXTX_FROM_PORT(p->port);
+		break;
+	case lldpctl_k_port_vlan_tx:
+		set.vlan_tx_tag = p->port->p_vlan_tx_tag;
+		set.vlan_tx_enabled = p->port->p_vlan_tx_enabled;
+		break;
+#ifdef ENABLE_DOT3
+	case lldpctl_k_port_dot3_power:
+		if (value->type != atom_dot3_power) {
+			SET_ERROR(atom->conn, LLDPCTL_ERR_INCORRECT_ATOM_TYPE);
+			return NULL;
+		}
+
+		dpow = (struct _lldpctl_atom_dot3_power_t *)value;
+		set.dot3_power = &dpow->parent->port->p_power;
+		break;
+#endif
+#ifdef ENABLE_LLDPMED
+	case lldpctl_k_port_med_power:
+		if (value->type != atom_med_power) {
+			SET_ERROR(atom->conn, LLDPCTL_ERR_INCORRECT_ATOM_TYPE);
+			return NULL;
+		}
+
+		mpow = (struct _lldpctl_atom_med_power_t *)value;
+		set.med_power = &mpow->parent->port->p_med_power;
+		break;
+	case lldpctl_k_port_med_policies:
+		if (value->type != atom_med_policy) {
+			SET_ERROR(atom->conn, LLDPCTL_ERR_INCORRECT_ATOM_TYPE);
+			return NULL;
+		}
+		mpol = (struct _lldpctl_atom_med_policy_t *)value;
+		set.med_policy = mpol->policy;
+		break;
+	case lldpctl_k_port_med_locations:
+		if (value->type != atom_med_location) {
+			SET_ERROR(atom->conn, LLDPCTL_ERR_INCORRECT_ATOM_TYPE);
+			return NULL;
+		}
+		mloc = (struct _lldpctl_atom_med_location_t *)value;
+		set.med_location = mloc->location;
+		break;
+#endif
+#ifdef ENABLE_CUSTOM
+	case lldpctl_k_custom_tlvs_clear:
+		set.custom_list_clear = 1;
+		break;
+	case lldpctl_k_custom_tlv:
+		if (value->type != atom_custom) {
+			SET_ERROR(atom->conn, LLDPCTL_ERR_INCORRECT_ATOM_TYPE);
+			return NULL;
+		}
+		custom = (struct _lldpctl_atom_custom_t *)value;
+		set.custom = custom->tlv;
+		set.custom_tlv_op = custom->op;
+		break;
+#endif
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	char empty_str[] = "";
+	set.ifname = hardware ? hardware->h_ifname : empty_str;
+
+	if (asprintf(&canary, "%d%p%s", key, value, set.ifname) == -1) {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOMEM);
+		return NULL;
+	}
+	rc = _lldpctl_do_something(atom->conn, CONN_STATE_SET_PORT_SEND,
+	    CONN_STATE_SET_PORT_RECV, canary, SET_PORT, &set,
+	    &MARSHAL_INFO(lldpd_port_set), NULL, NULL);
+	free(canary);
+	if (rc == 0) return atom;
+	return NULL;
+}
+
+static const char *
+_lldpctl_atom_get_str_port(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_port_t *p = (struct _lldpctl_atom_port_t *)atom;
+	struct lldpd_port *port = p->port;
+	struct lldpd_hardware *hardware = p->hardware;
+	char *ipaddress = NULL;
+	size_t len;
+
+	/* Local port only */
+	switch (key) {
+	case lldpctl_k_port_name:
+		if (hardware != NULL) return hardware->h_ifname;
+		break;
+	case lldpctl_k_port_status:
+		if (p->local)
+			return map_lookup(port_status_map.map,
+			    LLDPD_RXTX_FROM_PORT(port));
+		break;
+	default:
+		break;
+	}
+
+	if (!port) return NULL;
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_port_protocol:
+		return map_lookup(lldpd_protocol_map.map, port->p_protocol);
+	case lldpctl_k_port_id_subtype:
+		return map_lookup(port_id_subtype_map, port->p_id_subtype);
+	case lldpctl_k_port_id:
+		switch (port->p_id_subtype) {
+		case LLDP_PORTID_SUBTYPE_IFNAME:
+		case LLDP_PORTID_SUBTYPE_IFALIAS:
+		case LLDP_PORTID_SUBTYPE_LOCAL:
+			return port->p_id;
+		case LLDP_PORTID_SUBTYPE_LLADDR:
+			return _lldpctl_dump_in_atom(atom, (uint8_t *)port->p_id,
+			    port->p_id_len, ':', 0);
+		case LLDP_PORTID_SUBTYPE_ADDR:
+			switch (port->p_id[0]) {
+			case LLDP_MGMT_ADDR_IP4:
+				len = INET_ADDRSTRLEN + 1;
+				break;
+			case LLDP_MGMT_ADDR_IP6:
+				len = INET6_ADDRSTRLEN + 1;
+				break;
+			default:
+				len = 0;
+			}
+			if (len > 0) {
+				ipaddress = _lldpctl_alloc_in_atom(atom, len);
+				if (!ipaddress) return NULL;
+				if (inet_ntop((port->p_id[0] == LLDP_MGMT_ADDR_IP4) ?
+					    AF_INET :
+					    AF_INET6,
+					&port->p_id[1], ipaddress, len) == NULL)
+					break;
+				return ipaddress;
+			}
+			break;
+		}
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	case lldpctl_k_port_descr:
+		return port->p_descr;
+
+#ifdef ENABLE_DOT3
+	case lldpctl_k_port_dot3_mautype:
+		return map_lookup(operational_mau_type_values, port->p_macphy.mau_type);
+#endif
+
+	default:
+		/* Compatibility: query the associated chassis too */
+		return lldpctl_atom_get_str(p->chassis, key);
+	}
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_int_port(lldpctl_atom_t *atom, lldpctl_key_t key, long int value)
+{
+	struct _lldpctl_atom_port_t *p = (struct _lldpctl_atom_port_t *)atom;
+	struct lldpd_port *port = p->port;
+
+	if (p->local) {
+		switch (key) {
+		case lldpctl_k_port_status:
+			port->p_disable_rx = !LLDPD_RXTX_RXENABLED(value);
+			port->p_disable_tx = !LLDPD_RXTX_TXENABLED(value);
+			break;
+		case lldpctl_k_port_vlan_tx:
+			if (value > -1) {
+				port->p_vlan_tx_tag = value;
+				port->p_vlan_tx_enabled = 1;
+			} else
+				port->p_vlan_tx_enabled = 0;
+			break;
+		default:
+			SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+			return NULL;
+		}
+	} else {
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	return _lldpctl_atom_set_atom_port(atom, key, NULL);
+}
+
+static lldpctl_atom_t *
+_lldpctl_atom_set_str_port(lldpctl_atom_t *atom, lldpctl_key_t key, const char *value)
+{
+	struct _lldpctl_atom_port_t *p = (struct _lldpctl_atom_port_t *)atom;
+	struct lldpd_port *port = p->port;
+
+	if (!value || !strlen(value)) return NULL;
+
+	if (p->local) {
+		switch (key) {
+		case lldpctl_k_port_status:
+			return _lldpctl_atom_set_int_port(atom, key,
+			    map_reverse_lookup(port_status_map.map, value));
+		default:
+			break;
+		}
+	}
+
+	switch (key) {
+	case lldpctl_k_port_id:
+		free(port->p_id);
+		port->p_id = strdup(value);
+		port->p_id_len = strlen(value);
+		break;
+	case lldpctl_k_port_descr:
+		free(port->p_descr);
+		port->p_descr = strdup(value);
+		break;
+	default:
+		SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+		return NULL;
+	}
+
+	return _lldpctl_atom_set_atom_port(atom, key, NULL);
+}
+
+static long int
+_lldpctl_atom_get_int_port(lldpctl_atom_t *atom, lldpctl_key_t key)
+{
+	struct _lldpctl_atom_port_t *p = (struct _lldpctl_atom_port_t *)atom;
+	struct lldpd_port *port = p->port;
+	struct lldpd_hardware *hardware = p->hardware;
+
+	/* Local port only */
+	if (hardware != NULL) {
+		switch (key) {
+		case lldpctl_k_port_index:
+			return hardware->h_ifindex;
+		case lldpctl_k_tx_cnt:
+			return hardware->h_tx_cnt;
+		case lldpctl_k_rx_cnt:
+			return hardware->h_rx_cnt;
+		case lldpctl_k_rx_discarded_cnt:
+			return hardware->h_rx_discarded_cnt;
+		case lldpctl_k_rx_unrecognized_cnt:
+			return hardware->h_rx_unrecognized_cnt;
+		case lldpctl_k_ageout_cnt:
+			return hardware->h_ageout_cnt;
+		case lldpctl_k_insert_cnt:
+			return hardware->h_insert_cnt;
+		case lldpctl_k_delete_cnt:
+			return hardware->h_delete_cnt;
+		default:
+			break;
+		}
+	}
+	if (p->local) {
+		switch (key) {
+		case lldpctl_k_port_status:
+			return LLDPD_RXTX_FROM_PORT(port);
+		default:
+			break;
+		}
+	}
+	if (!port) return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+
+	/* Local and remote port */
+	switch (key) {
+	case lldpctl_k_port_protocol:
+		return port->p_protocol;
+	case lldpctl_k_port_age:
+		return port->p_lastchange;
+	case lldpctl_k_port_ttl:
+		return port->p_ttl;
+	case lldpctl_k_port_id_subtype:
+		return port->p_id_subtype;
+	case lldpctl_k_port_hidden:
+		return port->p_hidden_in;
+	case lldpctl_k_port_vlan_tx:
+		return port->p_vlan_tx_enabled ? port->p_vlan_tx_tag : -1;
+#ifdef ENABLE_DOT3
+	case lldpctl_k_port_dot3_mfs:
+		if (port->p_mfs > 0) return port->p_mfs;
+		break;
+	case lldpctl_k_port_dot3_aggregid:
+		if (port->p_aggregid > 0) return port->p_aggregid;
+		break;
+	case lldpctl_k_port_dot3_autoneg_support:
+		return port->p_macphy.autoneg_support;
+	case lldpctl_k_port_dot3_autoneg_enabled:
+		return port->p_macphy.autoneg_enabled;
+	case lldpctl_k_port_dot3_autoneg_advertised:
+		return port->p_macphy.autoneg_advertised;
+	case lldpctl_k_port_dot3_mautype:
+		return port->p_macphy.mau_type;
+#endif
+#ifdef ENABLE_DOT1
+	case lldpctl_k_port_vlan_pvid:
+		return port->p_pvid;
+#endif
+	default:
+		/* Compatibility: query the associated chassis too */
+		return lldpctl_atom_get_int(p->chassis, key);
+	}
+	return SET_ERROR(atom->conn, LLDPCTL_ERR_NOT_EXIST);
+}
+
+static const uint8_t *
+_lldpctl_atom_get_buf_port(lldpctl_atom_t *atom, lldpctl_key_t key, size_t *n)
+{
+	struct _lldpctl_atom_port_t *p = (struct _lldpctl_atom_port_t *)atom;
+	struct lldpd_port *port = p->port;
+
+	switch (key) {
+	case lldpctl_k_port_id:
+		*n = port->p_id_len;
+		return (uint8_t *)port->p_id;
+	default:
+		/* Compatibility: query the associated chassis too */
+		return lldpctl_atom_get_buffer(p->chassis, key, n);
+	}
+}
+
+static struct atom_builder ports_list = { atom_ports_list,
+	sizeof(struct _lldpctl_atom_any_list_t), .init = _lldpctl_atom_new_any_list,
+	.free = _lldpctl_atom_free_any_list, .iter = _lldpctl_atom_iter_ports_list,
+	.next = _lldpctl_atom_next_ports_list,
+	.value = _lldpctl_atom_value_ports_list };
+
+static struct atom_builder port = { atom_port, sizeof(struct _lldpctl_atom_port_t),
+	.init = _lldpctl_atom_new_port, .free = _lldpctl_atom_free_port,
+	.get = _lldpctl_atom_get_atom_port, .set = _lldpctl_atom_set_atom_port,
+	.get_str = _lldpctl_atom_get_str_port, .set_str = _lldpctl_atom_set_str_port,
+	.get_int = _lldpctl_atom_get_int_port, .set_int = _lldpctl_atom_set_int_port,
+	.get_buffer = _lldpctl_atom_get_buf_port };
+
+ATOM_BUILDER_REGISTER(ports_list, 4);
+ATOM_BUILDER_REGISTER(port, 5);
diff --git a/src/lib/connection.c b/src/lib/connection.c
new file mode 100644
index 0000000..43f46cb
--- /dev/null
+++ b/src/lib/connection.c
@@ -0,0 +1,306 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include "lldpctl.h"
+#include "atom.h"
+#include "../compat/compat.h"
+#include "../ctl.h"
+#include "../log.h"
+
+const char *
+lldpctl_get_default_transport(void)
+{
+	return LLDPD_CTL_SOCKET;
+}
+
+/* Connect to the remote end */
+static int
+sync_connect(lldpctl_conn_t *lldpctl)
+{
+	return ctl_connect(lldpctl->ctlname);
+}
+
+/* Synchronously send data to remote end. */
+static ssize_t
+sync_send(lldpctl_conn_t *lldpctl, const uint8_t *data, size_t length, void *user_data)
+{
+	struct lldpctl_conn_sync_t *conn = user_data;
+	ssize_t nb;
+
+	if (conn->fd == -1 && ((conn->fd = sync_connect(lldpctl)) == -1)) {
+		return LLDPCTL_ERR_CANNOT_CONNECT;
+	}
+
+	while ((nb = write(conn->fd, data, length)) == -1) {
+		if (errno == EAGAIN || errno == EINTR) continue;
+		return LLDPCTL_ERR_CALLBACK_FAILURE;
+	}
+	return nb;
+}
+
+/* Statically receive data from remote end. */
+static ssize_t
+sync_recv(lldpctl_conn_t *lldpctl, const uint8_t *data, size_t length, void *user_data)
+{
+	struct lldpctl_conn_sync_t *conn = user_data;
+	ssize_t nb;
+	size_t remain, offset = 0;
+
+	if (conn->fd == -1 && ((conn->fd = sync_connect(lldpctl)) == -1)) {
+		lldpctl->error = LLDPCTL_ERR_CANNOT_CONNECT;
+		return LLDPCTL_ERR_CANNOT_CONNECT;
+	}
+
+	remain = length;
+	do {
+		if ((nb = read(conn->fd, (unsigned char *)data + offset, remain)) ==
+		    -1) {
+			if (errno == EAGAIN || errno == EINTR) continue;
+			return LLDPCTL_ERR_CALLBACK_FAILURE;
+		}
+		remain -= nb;
+		offset += nb;
+	} while (remain > 0 && nb != 0);
+	return offset;
+}
+
+lldpctl_conn_t *
+lldpctl_new(lldpctl_send_callback send, lldpctl_recv_callback recv, void *user_data)
+{
+	return lldpctl_new_name(lldpctl_get_default_transport(), send, recv, user_data);
+}
+
+lldpctl_conn_t *
+lldpctl_new_name(const char *ctlname, lldpctl_send_callback send,
+    lldpctl_recv_callback recv, void *user_data)
+{
+	lldpctl_conn_t *conn = NULL;
+	struct lldpctl_conn_sync_t *data = NULL;
+
+	/* Both callbacks are mandatory or should be NULL. */
+	if (send && !recv) return NULL;
+	if (recv && !send) return NULL;
+
+	if ((conn = calloc(1, sizeof(lldpctl_conn_t))) == NULL) return NULL;
+
+	conn->ctlname = strdup(ctlname);
+	if (conn->ctlname == NULL) {
+		free(conn);
+		return NULL;
+	}
+	if (!send && !recv) {
+		if ((data = malloc(sizeof(struct lldpctl_conn_sync_t))) == NULL) {
+			free(conn->ctlname);
+			free(conn);
+			return NULL;
+		}
+		data->fd = -1;
+		conn->send = sync_send;
+		conn->recv = sync_recv;
+		conn->user_data = data;
+	} else {
+		conn->send = send;
+		conn->recv = recv;
+		conn->user_data = user_data;
+	}
+
+	return conn;
+}
+
+int
+lldpctl_release(lldpctl_conn_t *conn)
+{
+	if (conn == NULL) return 0;
+	free(conn->ctlname);
+	if (conn->send == sync_send) {
+		struct lldpctl_conn_sync_t *data = conn->user_data;
+		if (data->fd != -1) close(data->fd);
+		free(conn->user_data);
+	}
+	free(conn->input_buffer);
+	free(conn->output_buffer);
+	free(conn);
+	return 0;
+}
+
+/**
+ * Request some bytes if they are not already here.
+ *
+ * @param conn   The connection to lldpd.
+ * @param length The number of requested bytes.
+ * @return A negative integer if we can't have the bytes or the number of bytes we got.
+ */
+ssize_t
+_lldpctl_needs(lldpctl_conn_t *conn, size_t length)
+{
+	uint8_t *buffer;
+	ssize_t rc;
+
+	if ((buffer = calloc(1, length)) == NULL)
+		return SET_ERROR(conn, LLDPCTL_ERR_NOMEM);
+	rc = conn->recv(conn, buffer, length, conn->user_data);
+	if (rc < 0) {
+		free(buffer);
+		return SET_ERROR(conn, rc);
+	}
+	if (rc == 0) {
+		free(buffer);
+		return SET_ERROR(conn, LLDPCTL_ERR_EOF);
+	}
+	rc = lldpctl_recv(conn, buffer, rc);
+	free(buffer);
+	if (rc < 0) return SET_ERROR(conn, rc);
+	RESET_ERROR(conn);
+	return rc;
+}
+
+static int
+check_for_notification(lldpctl_conn_t *conn)
+{
+	struct lldpd_neighbor_change *change;
+	void *p;
+	int rc;
+	lldpctl_change_t type;
+	lldpctl_atom_t *interface = NULL, *neighbor = NULL;
+	rc = ctl_msg_recv_unserialized(&conn->input_buffer, &conn->input_buffer_len,
+	    NOTIFICATION, &p, &MARSHAL_INFO(lldpd_neighbor_change));
+	if (rc != 0) return rc;
+	change = p;
+
+	/* We have a notification, call the callback */
+	if (conn->watch_cb || conn->watch_cb2) {
+		switch (change->state) {
+		case NEIGHBOR_CHANGE_DELETED:
+			type = lldpctl_c_deleted;
+			break;
+		case NEIGHBOR_CHANGE_ADDED:
+			type = lldpctl_c_added;
+			break;
+		case NEIGHBOR_CHANGE_UPDATED:
+			type = lldpctl_c_updated;
+			break;
+		default:
+			log_warnx("control", "unknown notification type (%d)",
+			    change->state);
+			goto end;
+		}
+		interface = _lldpctl_new_atom(conn, atom_interface, change->ifname);
+		if (interface == NULL) goto end;
+		neighbor =
+		    _lldpctl_new_atom(conn, atom_port, 0, NULL, change->neighbor, NULL);
+		if (neighbor == NULL) goto end;
+		if (conn->watch_cb)
+			conn->watch_cb(conn, type, interface, neighbor,
+			    conn->watch_data);
+		else
+			conn->watch_cb2(type, interface, neighbor, conn->watch_data);
+		conn->watch_triggered = 1;
+		goto end;
+	}
+
+end:
+	if (interface) lldpctl_atom_dec_ref(interface);
+	if (neighbor)
+		lldpctl_atom_dec_ref(neighbor);
+	else {
+		lldpd_chassis_cleanup(change->neighbor->p_chassis, 1);
+		lldpd_port_cleanup(change->neighbor, 1);
+		free(change->neighbor);
+	}
+	free(change->ifname);
+	free(change);
+
+	/* Indicate if more data remains in the buffer for processing */
+	return (rc);
+}
+
+ssize_t
+lldpctl_recv(lldpctl_conn_t *conn, const uint8_t *data, size_t length)
+{
+
+	RESET_ERROR(conn);
+
+	if (length == 0) return 0;
+
+	/* Received data should be appended to the input buffer. */
+	if (conn->input_buffer == NULL) {
+		conn->input_buffer_len = 0;
+		if ((conn->input_buffer = malloc(length)) == NULL)
+			return SET_ERROR(conn, LLDPCTL_ERR_NOMEM);
+	} else {
+		uint8_t *new =
+		    realloc(conn->input_buffer, conn->input_buffer_len + length);
+		if (new == NULL) return SET_ERROR(conn, LLDPCTL_ERR_NOMEM);
+		conn->input_buffer = new;
+	}
+	memcpy(conn->input_buffer + conn->input_buffer_len, data, length);
+	conn->input_buffer_len += length;
+
+	/* Read all notifications */
+	while (!check_for_notification(conn))
+		;
+
+	RESET_ERROR(conn);
+
+	return conn->input_buffer_len;
+}
+
+int
+lldpctl_process_conn_buffer(lldpctl_conn_t *conn)
+{
+	int rc;
+
+	rc = check_for_notification(conn);
+
+	RESET_ERROR(conn);
+
+	return rc;
+}
+
+ssize_t
+lldpctl_send(lldpctl_conn_t *conn)
+{
+	/* Send waiting data. */
+	ssize_t rc;
+
+	RESET_ERROR(conn);
+
+	if (!conn->output_buffer) return 0;
+	rc = conn->send(conn, conn->output_buffer, conn->output_buffer_len,
+	    conn->user_data);
+	if (rc < 0) return SET_ERROR(conn, rc);
+
+	/* "Shrink" the output buffer. */
+	if (rc == conn->output_buffer_len) {
+		free(conn->output_buffer);
+		conn->output_buffer = NULL;
+		conn->output_buffer_len = 0;
+		RESET_ERROR(conn);
+		return rc;
+	}
+	conn->output_buffer_len -= rc;
+	memmove(conn->output_buffer, conn->output_buffer + rc, conn->output_buffer_len);
+	/* We don't shrink the buffer. It will be either freed or shrinked later */
+	RESET_ERROR(conn);
+	return rc;
+}
diff --git a/src/lib/errors.c b/src/lib/errors.c
new file mode 100644
index 0000000..899ca6f
--- /dev/null
+++ b/src/lib/errors.c
@@ -0,0 +1,75 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpctl.h"
+#include "atom.h"
+#include "../log.h"
+
+const char *
+lldpctl_strerror(lldpctl_error_t error)
+{
+	/* No default case to let the compiler warns us if we miss an error code. */
+	switch (error) {
+	case LLDPCTL_NO_ERROR:
+		return "No error";
+	case LLDPCTL_ERR_WOULDBLOCK:
+		return "Requested operation would block";
+	case LLDPCTL_ERR_EOF:
+		return "End of file reached";
+	case LLDPCTL_ERR_NOT_EXIST:
+		return "The requested information does not exist";
+	case LLDPCTL_ERR_CANNOT_CONNECT:
+		return "Unable to connect to lldpd daemon";
+	case LLDPCTL_ERR_INCORRECT_ATOM_TYPE:
+		return "Provided atom is of incorrect type";
+	case LLDPCTL_ERR_SERIALIZATION:
+		return "Error while serializing or unserializing data";
+	case LLDPCTL_ERR_INVALID_STATE:
+		return "Other input/output operation already in progress";
+	case LLDPCTL_ERR_CANNOT_ITERATE:
+		return "Cannot iterate on this atom";
+	case LLDPCTL_ERR_CANNOT_CREATE:
+		return "Cannot create a new element for this atom";
+	case LLDPCTL_ERR_BAD_VALUE:
+		return "Provided value is invalid";
+	case LLDPCTL_ERR_FATAL:
+		return "Unexpected fatal error";
+	case LLDPCTL_ERR_NOMEM:
+		return "Not enough memory available";
+	case LLDPCTL_ERR_CALLBACK_FAILURE:
+		return "A failure occurred during callback processing";
+	}
+	return "Unknown error code";
+}
+
+lldpctl_error_t
+lldpctl_last_error(lldpctl_conn_t *lldpctl)
+{
+	return lldpctl->error;
+}
+
+void
+lldpctl_log_callback(void (*cb)(int severity, const char *msg))
+{
+	log_register(cb);
+}
+
+void
+lldpctl_log_level(int level)
+{
+	if (level >= 1) log_level(level - 1);
+}
diff --git a/src/lib/fixedpoint.c b/src/lib/fixedpoint.c
new file mode 100644
index 0000000..4df0b50
--- /dev/null
+++ b/src/lib/fixedpoint.c
@@ -0,0 +1,255 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2013 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <arpa/inet.h>
+#include "fixedpoint.h"
+
+/* This is not a general purpose fixed point library. First, there is no
+ * arithmetic. Second, some functions assume that the total precision does not
+ * exceed 64 bits.
+ */
+
+#ifdef ENABLE_LLDPMED
+
+#  ifndef ntohll
+#    define ntohll(x)                                         \
+      (((u_int64_t)(ntohl((int)(((x) << 32) >> 32))) << 32) | \
+	  (unsigned int)ntohl(((int)((x) >> 32))))
+#  endif
+
+/**
+ * Convert a string to fixed point number.
+ *
+ * @param repr String to convert.
+ * @param end If not NULL, will contain a pointer to the character after the
+ *            last character used in the conversion.
+ * @param intbits Number of bits to represent the integer part.
+ * @param fltbits Number of bits to represent the float part.
+ * @return A fixed point number.
+ *
+ * If there is an overflow, there will be a truncation. Moreover, the fraction
+ * part will be rounded to the nearest possible power of two representation. The
+ * point will depend on the number of decimal provided with the fraction
+ * part.
+ */
+struct fp_number
+fp_strtofp(const char *repr, char **end, unsigned intbits, unsigned fltbits)
+{
+	char *endptr = NULL, *e2;
+	struct fp_number result = { .integer = { 0, intbits },
+		.fraction = { 0, fltbits, 0 } };
+	result.integer.value = strtoll(repr, &endptr, 10);
+	if (result.integer.value >= (1LL << (intbits - 1)))
+		result.integer.value = (1LL << (intbits - 1)) - 1;
+	else if (result.integer.value < ~(1LL << (intbits - 1)) + 1)
+		result.integer.value = ~(1LL << (intbits - 1)) + 1;
+	if (*endptr == '.') {
+		long long precision = 1;
+		e2 = endptr + 1;
+		result.fraction.value = strtoll(e2, &endptr, 10);
+		/* Convert to a representation in power of two. Get the
+		 * precision from the number of digits provided. This is NOT the
+		 * value of the higher bits in the binary representation: we
+		 * consider that if the user inputs, 0.9375, it means to
+		 * represent anything between 0 and 0.9999 with the same
+		 * precision. Therefore, we don't have only 4 bits of precision
+		 * but 14. */
+		while (e2++ != endptr)
+			precision *= 10;
+		result.fraction.value <<= fltbits;
+		result.fraction.value /= precision;
+		result.fraction.precision = (precision == 1) ?
+		    1 :
+		    (sizeof(precision) * 8 - __builtin_clzll(precision - 1));
+		if (result.fraction.precision > fltbits)
+			result.fraction.precision = fltbits;
+	}
+	if (end) *end = endptr;
+	return result;
+}
+
+/**
+ * Get a string representation of a fixed point number.
+ *
+ * @param fp Fixed point number.
+ * @param suffix If not NULL, use the first character when positive and the
+ *               second one when negative instead of prefixing by `-`.
+ * @return the string representation
+ *
+ * Since we convert from binary to decimal, we are as precise as the binary
+ * representation.
+ */
+char *
+fp_fptostr(struct fp_number fp, const char *suffix)
+{
+	char *result = NULL;
+	char *frac = NULL;
+	int negative = (fp.integer.value < 0);
+	if (fp.fraction.value == 0)
+		frac = strdup("");
+	else {
+		long long decimal = fp.fraction.value;
+		long long precision = 1;
+		int len = 0;
+		while ((1LL << fp.fraction.precision) > precision) {
+			precision *= 10;
+			len += 1;
+		}
+		/* We did round-up, when converting from decimal. We round-down
+		 * to have some coherency. */
+		precision /= 10;
+		len -= 1;
+		if (precision == 0) precision = 1;
+		decimal *= precision;
+		decimal >>= fp.fraction.bits;
+		if (asprintf(&frac, ".%0*llu", len, decimal) == -1) return NULL;
+	}
+	if (asprintf(&result, "%s%llu%s%c", (suffix == NULL && negative) ? "-" : "",
+		(negative) ? (-fp.integer.value) : fp.integer.value, frac,
+		(suffix && !negative)	 ? suffix[0] :
+		    (suffix && negative) ? suffix[1] :
+					   ' ') == -1) {
+		free(frac);
+		return NULL;
+	}
+	free(frac);
+	if (!suffix) result[strlen(result) - 1] = '\0';
+	return result;
+}
+
+/**
+ * Turn a fixed point number into its representation in a buffer.
+ *
+ * @param fp Fixed point number.
+ * @param buf Output buffer.
+ * @param shift Number of bits to skip at the beginning of the buffer.
+ *
+ * The representation of a fixed point number is the precision (always 6 bits
+ * because we assume that int part + frac part does not exceed 64 bits), the
+ * integer part and the fractional part.
+ */
+void
+fp_fptobuf(struct fp_number fp, unsigned char *buf, unsigned shift)
+{
+	unsigned long long value = (fp.integer.value >= 0) ?
+	    ((fp.integer.value << fp.fraction.bits) + fp.fraction.value) :
+	    (~(((unsigned long long)(-fp.integer.value) << fp.fraction.bits) +
+		 fp.fraction.value) +
+		1);
+	unsigned long long ints[] = { fp.integer.bits + fp.fraction.precision, value };
+	unsigned int bits[] = { 6, fp.integer.bits + fp.fraction.bits };
+
+	unsigned i, obit, o;
+	for (i = 0, obit = 8 - (shift % 8), o = shift / 8; i < 2;) {
+		if (obit > bits[i]) {
+			/* We need to clear bits that will be overwritten but do not
+			 * touch other bits */
+			if (bits[i] != 0) {
+				buf[o] = buf[o] &
+				    (~((1 << obit) - 1) |
+					((1 << (obit - bits[i])) - 1));
+				buf[o] = buf[o] |
+				    ((ints[i] & ((1 << bits[i]) - 1))
+					<< (obit - bits[i]));
+				obit -= bits[i];
+			}
+			i++;
+		} else {
+			/* As in the other branch... */
+			buf[o] = buf[o] & (~((1 << obit) - 1));
+			buf[o] = buf[o] |
+			    ((ints[i] >> (bits[i] - obit)) & ((1 << obit) - 1));
+			bits[i] -= obit;
+			obit = 8;
+			o++;
+		}
+	}
+}
+
+/**
+ * Parse a fixed point number from a buffer.
+ *
+ * @param buf Input buffer
+ * @param intbits Number of bits used for integer part.
+ * @param fltbits Number of bits used for fractional part.
+ * @param shift Number of bits to skip at the beginning of the buffer.
+ *
+ * @return the parsed fixed point number.
+ *
+ * The representation is the same as for @c fp_fptobuf().
+ */
+struct fp_number
+fp_buftofp(const unsigned char *buf, unsigned intbits, unsigned fltbits, unsigned shift)
+{
+	unsigned long long value = 0, precision = 0;
+	unsigned long long *ints[] = { &precision, &value };
+	unsigned int bits[] = { 6, intbits + fltbits };
+
+	unsigned o, ibit, i;
+	for (o = 0, ibit = 8 - (shift % 8), i = shift / 8; o < 2;) {
+		if (ibit > bits[o]) {
+			if (bits[o] > 0) {
+				*ints[o] = *ints[o] |
+				    ((buf[i] >> (ibit - bits[o])) &
+					((1ULL << bits[o]) - 1));
+				ibit -= bits[o];
+			}
+			o++;
+		} else {
+			*ints[o] = *ints[o] |
+			    ((buf[i] & ((1ULL << ibit) - 1)) << (bits[o] - ibit));
+			bits[o] -= ibit;
+			ibit = 8;
+			i++;
+		}
+	}
+
+	/* Don't handle too low precision */
+	if (precision > intbits)
+		precision -= intbits;
+	else
+		precision = intbits;
+
+	int negative = !!(value & (1ULL << (intbits + fltbits - 1)));
+	if (negative) value = (~value + 1) & ((1ULL << (intbits + fltbits - 1)) - 1);
+	struct fp_number result = { .integer = { value >> fltbits, intbits },
+		.fraction = { value & ((1ULL << fltbits) - 1), fltbits, precision } };
+	if (negative) result.integer.value = -result.integer.value;
+
+	return result;
+}
+
+/**
+ * Negate a fixed point number.
+ */
+struct fp_number
+fp_negate(struct fp_number fp)
+{
+	unsigned intbits = fp.integer.bits;
+	struct fp_number result = fp;
+	result.integer.value = -result.integer.value;
+	if (result.integer.value >= (1LL << (intbits - 1)))
+		result.integer.value = (1LL << (intbits - 1)) - 1;
+	else if (result.integer.value < ~(1LL << (intbits - 1)) + 1)
+		result.integer.value = ~(1LL << (intbits - 1)) + 1;
+	return result;
+}
+
+#endif
diff --git a/src/lib/fixedpoint.h b/src/lib/fixedpoint.h
new file mode 100644
index 0000000..8b4216c
--- /dev/null
+++ b/src/lib/fixedpoint.h
@@ -0,0 +1,42 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#if HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#if !defined FIXEDPOINT_H && defined ENABLE_LLDPMED
+#  define FIXEDPOINT_H
+
+struct fp_number {
+	struct {
+		long long value;
+		unsigned bits;
+	} integer;
+	struct {
+		long long value;
+		unsigned bits;
+		unsigned precision;
+	} fraction;
+};
+struct fp_number fp_strtofp(const char *, char **, unsigned, unsigned);
+struct fp_number fp_buftofp(const unsigned char *, unsigned, unsigned, unsigned);
+struct fp_number fp_negate(struct fp_number);
+char *fp_fptostr(struct fp_number, const char *);
+void fp_fptobuf(struct fp_number, unsigned char *, unsigned);
+
+#endif
diff --git a/src/lib/helpers.c b/src/lib/helpers.c
new file mode 100644
index 0000000..973f8f4
--- /dev/null
+++ b/src/lib/helpers.c
@@ -0,0 +1,78 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2015 Vincent Bernat <vincent@bernat.im>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "lldpctl.h"
+#include "../log.h"
+#include "atom.h"
+#include "helpers.h"
+
+const char *
+map_lookup(lldpctl_map_t *list, int n)
+{
+
+	unsigned int i;
+
+	for (i = 0; list[i].string != NULL; i++) {
+		if (list[i].value == n) {
+			return list[i].string;
+		}
+	}
+
+	return "unknown";
+}
+
+int
+map_reverse_lookup(lldpctl_map_t *list, const char *string)
+{
+	if (!string) return -1;
+
+	for (unsigned int i = 0; list[i].string != NULL; i++) {
+		if (!strcasecmp(list[i].string, string)) return list[i].value;
+	}
+
+	return -1;
+}
+
+int
+_lldpctl_atom_new_any_list(lldpctl_atom_t *atom, va_list ap)
+{
+	struct _lldpctl_atom_any_list_t *plist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	plist->parent = va_arg(ap, struct _lldpctl_atom_port_t *);
+	lldpctl_atom_inc_ref((lldpctl_atom_t *)plist->parent);
+	return 1;
+}
+
+void
+_lldpctl_atom_free_any_list(lldpctl_atom_t *atom)
+{
+	struct _lldpctl_atom_any_list_t *plist =
+	    (struct _lldpctl_atom_any_list_t *)atom;
+	lldpctl_atom_dec_ref((lldpctl_atom_t *)plist->parent);
+}
+
+char *
+xstrdup(const char *str)
+{
+	if (!str) return NULL;
+	return strdup(str);
+}
diff --git a/src/lib/helpers.h b/src/lib/helpers.h
new file mode 100644
index 0000000..6f7ae0b
--- /dev/null
+++ b/src/lib/helpers.h
@@ -0,0 +1,24 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2015 Vincent Bernat <vincent@bernat.im>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+const char *map_lookup(lldpctl_map_t *list, int n);
+int map_reverse_lookup(lldpctl_map_t *list, const char *string);
+
+int _lldpctl_atom_new_any_list(lldpctl_atom_t *atom, va_list ap);
+void _lldpctl_atom_free_any_list(lldpctl_atom_t *atom);
+
+char *xstrdup(const char *);
diff --git a/src/lib/lldpctl.h b/src/lib/lldpctl.h
new file mode 100644
index 0000000..5d2668f
--- /dev/null
+++ b/src/lib/lldpctl.h
@@ -0,0 +1,1186 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef LLDPCTL_H
+#define LLDPCTL_H
+
+/**
+ * @defgroup liblldpctl liblldpctl: library to interface with lldpd
+ *
+ * `liblldpctl` allows any program to convenienty query and modify the behaviour
+ * of a running lldpd daemon.
+ *
+ * To use this library, use `pkg-config` to get the appropriate options:
+ *   * `pkg-config --libs lldpctl` for `LIBS` or `LDFLAGS`
+ *   * `pkg-config --cflags lldpctl` for `CFLAGS`
+ *
+ * @warning This library is tightly coupled with lldpd. The library to use
+ *   should be the one shipped with lldpd. Clients of the library are then tied
+ *   by the classic API/ABI rules and may be compiled separatly.
+ *
+ * There are two important structures in this library: @c lldpctl_conn_t which
+ * represents a connection and @c lldpctl_atom_t which represents a piece of
+ * information. Those types are opaque. No direct access to them should be done.
+ *
+ * The library is expected to be reentrant and therefore thread-safe. It is
+ * however not expected that a connection to be used in several thread
+ * simultaneously. This also applies to the different pieces of information
+ * gathered through this connection. Several connection to lldpd can be used
+ * simultaneously.
+ *
+ * The first step is to establish a connection. See @ref lldpctl_connection for
+ * more information about this. The next step is to query the lldpd daemon. See
+ * @ref lldpctl_atoms on how to do this.
+ *
+ * `liblldpctl` tries to handle errors in a coherent way. Any function returning
+ * a pointer will return @c NULL on error and the last error can be retrieved
+ * through @ref lldpctl_last_error() function. Most functions returning integers
+ * will return a negative integer representing the error if something goes
+ * wrong. The use of @ref lldpctl_last_error() allows one to check if this is a
+ * real error if there is a doubt. See @ref lldpctl_errors_logs for more about
+ * this.
+ *
+ * @{
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+/**
+ * @defgroup lldpctl_connection Managing connection to lldpd
+ *
+ * Connection with lldpd.
+ *
+ * This library does not handle IO. They are delegated to a set of functions to
+ * allow a user to specify exactly how IO should be done. A user is expected to
+ * provide two functions: the first one is called when the library requests
+ * incoming data, the other one when it requests outgoing data. Moreover, the
+ * user is also expected to call the appropriate functions when data comes back
+ * (@ref lldpctl_recv()) or needs to be sent (@ref lldpctl_send()).
+ *
+ * Because the most common case is synchronous IO, `liblldpctl` will use classic
+ * synchronous IO with the Unix socket if no IO functions are provided by the
+ * user. For all other cases, the user must provide the appropriate functions.
+ *
+ * A connection should be allocated by using @ref lldpctl_new(). It needs to be
+ * released with @ref lldpctl_release().
+ *
+ * @{
+ */
+
+/**
+ * Get default transport name.
+ *
+ * Currently, this is the default location of the Unix socket.
+ */
+const char *lldpctl_get_default_transport(void);
+
+/**
+ * Structure referencing a connection with lldpd.
+ *
+ * This structure should be handled as opaque. It can be allocated
+ * with @c lldpctl_new() and the associated resources will be freed
+ * with @c lldpctl_release().
+ */
+typedef struct lldpctl_conn_t lldpctl_conn_t;
+
+/**
+ * Callback function invoked to send data to lldpd.
+ *
+ * @param conn      Handle to the connection to lldpd.
+ * @param data      Bytes to be sent.
+ * @param length    Length of provided data.
+ * @param user_data Provided user data.
+ * @return The number of bytes really sent or either @c LLDPCTL_ERR_WOULDBLOCK
+ *         if no bytes can be sent without blocking or @c
+ *         LLDPCTL_ERR_CALLBACK_FAILURE for other errors.
+ */
+typedef ssize_t (*lldpctl_send_callback)(lldpctl_conn_t *conn, const uint8_t *data,
+    size_t length, void *user_data);
+
+/**
+ * Callback function invoked to receive data from lldpd.
+ *
+ * @param conn      Handle to the connection to lldpd.
+ * @param data      Buffer for receiving data
+ * @param length    Maximum bytes we can receive
+ * @param user_data Provided user data.
+ * @return The number of bytes really received or either @c
+ *         LLDPCTL_ERR_WOULDBLOCK if no bytes can be received without blocking,
+ *         @c LLDPCTL_ERR_CALLBACK_FAILURE for other errors or @c
+ *         LLDPCTL_ERR_EOF if end of file was reached.
+ */
+typedef ssize_t (*lldpctl_recv_callback)(lldpctl_conn_t *conn, const uint8_t *data,
+    size_t length, void *user_data);
+
+/**
+ * Function invoked when additional data is available from lldpd.
+ *
+ * This function should be invoked in case of asynchronous IO when new data is
+ * available from lldpd (expected or unexpected).
+ *
+ * @param  conn      Handle to the connection to lldpd.
+ * @param  data      Data received from lldpd.
+ * @param  length    Length of data received.
+ * @return The number of bytes available or a negative integer if an error has
+ *         occurred. 0 is not an error. It usually means that a notification has
+ *         been processed.
+ */
+ssize_t lldpctl_recv(lldpctl_conn_t *conn, const uint8_t *data, size_t length);
+
+/**
+ * Function invoked when there is an opportunity to send data to lldpd.
+ *
+ * This function should be invoked in case of asynchronous IO when new data can
+ * be written to lldpd.
+ *
+ * @param  conn  Handle to the connection to lldpd.
+ * @return The number of bytes processed or a negative integer if an error has
+ *         occurred.
+ */
+ssize_t lldpctl_send(lldpctl_conn_t *conn);
+
+/**
+ * Function invoked to see if there's more data to be processed in the buffer.
+ *
+ * This function should be invoked to check for notifications in the data that
+ * has already been read. Its used typically for asynchronous connections.
+ *
+ * @param  conn  Handle to the connection to lldpd.
+ * @return 0 to indicate maybe more data is available for processing
+ *         !0 to indicate no data or insufficient data for processing
+ */
+int lldpctl_process_conn_buffer(lldpctl_conn_t *conn);
+
+/**
+ * Allocate a new handler for connecting to lldpd.
+ *
+ * @param  send      Callback to be used when sending   new data is requested.
+ * @param  recv      Callback to be used when receiving new data is requested.
+ * @param  user_data Data to pass to callbacks.
+ * @return An handler to be used to connect to lldpd or @c NULL in
+ *         case of error. In the later case, the error is probable an
+ *         out of memory condition.
+ *
+ * The allocated handler can be released with @c lldpctl_release(). If the
+ * provided parameters are both @c NULL, default synchronous callbacks will be
+ * used.
+ */
+lldpctl_conn_t *lldpctl_new(lldpctl_send_callback send, lldpctl_recv_callback recv,
+    void *user_data);
+
+/**
+ * Allocate a new handler for connecting to lldpd.
+ *
+ * @param  ctlname   the Unix-domain socket to connect to lldpd.
+ * @param  send      Callback to be used when sending   new data is requested.
+ * @param  recv      Callback to be used when receiving new data is requested.
+ * @param  user_data Data to pass to callbacks.
+ * @return An handler to be used to connect to lldpd or @c NULL in
+ *         case of error. In the later case, the error is probable an
+ *         out of memory condition.
+ *
+ * The allocated handler can be released with @c lldpctl_release(). If the
+ * provided parameters are both @c NULL, default synchronous callbacks will be
+ * used.
+ */
+lldpctl_conn_t *lldpctl_new_name(const char *ctlname, lldpctl_send_callback send,
+    lldpctl_recv_callback recv, void *user_data);
+
+/**
+ * Release resources associated with a connection to lldpd.
+ *
+ * @param   conn Previously allocated handler to a connection to lldpd.
+ * @return  0 on success or a negative integer
+ *
+ * @see lldpctl_new()
+ */
+int lldpctl_release(lldpctl_conn_t *conn);
+/**@}*/
+
+/**
+ * @defgroup lldpctl_errors_logs Errors and logs handling
+ *
+ * Error codes and logs handling.
+ *
+ * When a function returns a pointer, it may return @c NULL to indicate an error
+ * condition. In this case, it is possible to use @ref lldpctl_last_error() to
+ * get the related error code which is one of the values in @ref lldpctl_error_t
+ * enumeration. For display purpose @ref lldpctl_strerror() may be used to
+ * translate this error code.
+ *
+ * When a function returns an integer, it may return a negative value. It
+ * usually means this is an error but some functions may return a legitimate
+ * negative value (for example @ref lldpctl_atom_get_int()). When there is a
+ * doubt, @ref lldpctl_last_error() should be checked.
+ *
+ * An error is attached to a connection. If there is no connection, no error
+ * handling is available. Most functions use a connection or an atom as first
+ * argument and therefore are attached to a connection. To get the connection
+ * related to an atom, use @ref lldpctl_atom_get_connection().
+ *
+ * Also have a look at @ref lldpctl_log_callback() function if you want a custom
+ * log handling.
+ *
+ * @{
+ */
+
+/**
+ * Setup log handlers.
+ *
+ * By default, liblldpctl will log to stderr. The following function will
+ * register another callback for this purpose. Messages logged through this
+ * callback may be cryptic. They are targeted for the developer. Message for end
+ * users should rely on return codes.
+ */
+void lldpctl_log_callback(void (*cb)(int severity, const char *msg));
+
+/**
+ * Setup log level.
+ *
+ * By default, liblldpctl will only log warnings. The following function allows
+ * to increase verbosity. This function has no effect if callbacks are
+ * registered with the previous function.
+ *
+ * @param level    Level of verbosity (1 = warnings, 2 = info, 3 = debug).
+ */
+void lldpctl_log_level(int level);
+
+/**
+ * Possible error codes for functions that return negative integers on
+ * this purpose or for @c lldpctl_last_error().
+ */
+typedef enum {
+	/**
+	 * No error has happened (yet).
+	 */
+	LLDPCTL_NO_ERROR = 0,
+	/**
+	 * A IO related operation would block if performed.
+	 */
+	LLDPCTL_ERR_WOULDBLOCK = -501,
+	/**
+	 * A IO related operation has reached a end of file condition.
+	 */
+	LLDPCTL_ERR_EOF = -502,
+	/**
+	 * The requested information does not exist. For example, when
+	 * requesting an inexistant information from an atom.
+	 */
+	LLDPCTL_ERR_NOT_EXIST = -503,
+	/**
+	 * Cannot connect to the lldpd daemon. This error only happens with
+	 * default synchronous handlers.
+	 */
+	LLDPCTL_ERR_CANNOT_CONNECT = -504,
+	/**
+	 * Atom is of incorrect type for the requested operation.
+	 */
+	LLDPCTL_ERR_INCORRECT_ATOM_TYPE = -505,
+	/**
+	 * An error occurred during serialization of message.
+	 */
+	LLDPCTL_ERR_SERIALIZATION = -506,
+	/**
+	 * The requested operation cannot be performed because we have another
+	 * operation already running.
+	 */
+	LLDPCTL_ERR_INVALID_STATE = -507,
+	/**
+	 * The provided atom cannot be iterated.
+	 */
+	LLDPCTL_ERR_CANNOT_ITERATE = -508,
+	/**
+	 * The provided value is invalid.
+	 */
+	LLDPCTL_ERR_BAD_VALUE = -509,
+	/**
+	 * No new element can be created for this element.
+	 */
+	LLDPCTL_ERR_CANNOT_CREATE = -510,
+	/**
+	 * The library is under unexpected conditions and cannot process
+	 * any further data reliably.
+	 */
+	LLDPCTL_ERR_FATAL = -900,
+	/**
+	 * Out of memory condition. Things may get havoc here but we
+	 * should be able to recover.
+	 */
+	LLDPCTL_ERR_NOMEM = -901,
+	/**
+	 * An error occurred in a user provided callback.
+	 */
+	LLDPCTL_ERR_CALLBACK_FAILURE = -902
+} lldpctl_error_t;
+
+/**
+ * Describe a provided error code.
+ *
+ * @param error Error code to be described.
+ * @return Statically allocated string describing the error.
+ */
+const char *lldpctl_strerror(lldpctl_error_t error);
+
+/**
+ * Get the last error associated to a connection to lldpd.
+ *
+ * @param  conn Previously allocated handler to a connection to lldpd.
+ * @return 0 if no error is currently registered. A negative integer
+ *         otherwise.
+ *
+ * For functions returning int, this function will return the same
+ * error number. For functions returning something else, you can use
+ * this function to get the appropriate error number.
+ */
+lldpctl_error_t lldpctl_last_error(lldpctl_conn_t *conn);
+
+/**
+ * Describe the last error associate to a connection.
+ *
+ * @param conn Previously allocated handler to a connection to lldpd.
+ * @return Statically allocated string describing the error
+ */
+#define lldpctl_last_strerror(conn) lldpctl_strerror(lldpctl_last_error(conn))
+/**@}*/
+
+/**
+ * @defgroup lldpctl_atoms Extracting information: atoms
+ *
+ * Information retrieved from lldpd is represented as an atom.
+ *
+ * This is an opaque structure that can be passed along some functions to
+ * transmit chassis, ports, VLAN and other information related to LLDP. Most
+ * information are extracted using @c lldpctl_atom_get(), @c
+ * lldpctl_atom_get_str(), @c lldpctl_atom_get_buffer() or @c
+ * lldpctl_atom_get_int(), unless some IO with lldpd is needed to retrieve the
+ * requested information. In this case, there exists an appropriate function to
+ * convert the "deferred" atom into a normal one (like @c lldpctl_get_port()).
+ *
+ * For some information, setters are also available: @c lldpctl_atom_set(), @c
+ * lldpctl_atom_set_str(), @c lldpctl_atom_set_buffer() or @c
+ * lldpctl_atom_set_int(). Unlike getters, some of those may require IO to
+ * achieve their goal.
+ *
+ * An atom is reference counted. The semantics are quite similar to Python and
+ * you must be careful of the ownership of a reference. It is possible to own a
+ * reference by calling @c lldpctl_atom_inc_ref(). Once the atom is not needed
+ * any more, you can abandon ownership with @c lldpctl_atom_dec_ref(). Unless
+ * documented otherwise, a function returning an atom will return a new
+ * reference (the ownership is assigned to the caller, no need to call @c
+ * lldpctl_atom_inc_ref()). Unless documented otherwise, when providing an atom
+ * to a function, the atom is usually borrowed (no change in reference
+ * counting). Currently, no function will steal ownership.
+ *
+ * It is quite important to use the reference counting functions
+ * correctly. Segfaults or memory leaks may occur otherwise. Once the reference
+ * count reaches 0, the atom is immediately freed. Reusing it will likely lead
+ * to memory corruption.
+ *
+ * @{
+ */
+
+/**
+ * Structure representing an element (chassis, port, VLAN, ...)
+ *
+ * @see lldpctl_atom_inc_ref(), lldpctl_atom_dec_ref().
+ */
+typedef struct lldpctl_atom_t lldpctl_atom_t;
+
+/**
+ * Structure representing a map from an integer to a character string.
+ *
+ * @see lldpctl_key_get_map().
+ */
+typedef const struct {
+	int value;
+	const char *string;
+} lldpctl_map_t;
+
+/**
+ * Return the reference to connection with lldpd.
+ *
+ * @param atom The atom we want reference from.
+ * @return The reference to the connection to lldpd.
+ *
+ * Each atom contains an internal reference to the corresponding connection to
+ * lldpd. Use this function to get it.
+ */
+lldpctl_conn_t *lldpctl_atom_get_connection(lldpctl_atom_t *atom);
+
+/**
+ * Increment reference count for an atom.
+ *
+ * @param atom Atom we which to increase reference count.
+ */
+void lldpctl_atom_inc_ref(lldpctl_atom_t *atom);
+
+/**
+ * Decrement reference count for an atom.
+ *
+ * @param atom Atom we want to decrease reference count. Can be @c NULL. In this
+ *             case, nothing happens.
+ *
+ * When the reference count becomes 0, the atom is freed.
+ */
+void lldpctl_atom_dec_ref(lldpctl_atom_t *atom);
+
+/**
+ * Possible events for a change (notification).
+ *
+ * @see lldpctl_watch_callback2
+ */
+typedef enum {
+	lldpctl_c_deleted, /**< The neighbor has been deleted */
+	lldpctl_c_updated, /**< The neighbor has been updated */
+	lldpctl_c_added,   /**< This is a new neighbor */
+} lldpctl_change_t;
+
+/**
+ * Callback function invoked when a change is detected.
+ *
+ * @param conn      Connection with lldpd. Should not be used.
+ * @param type      Type of change detected.
+ * @param interface Physical interface on which the change has happened.
+ * @param neighbor  Changed neighbor.
+ * @param data      Data provided when registering the callback.
+ *
+ * The provided interface and neighbor atoms are stolen by the callback: their
+ * reference count are decremented when the callback ends. If you want to keep a
+ * reference to it, be sure to increment the reference count in the callback.
+ *
+ * @warning The provided connection should not be used at all. Do not use @c
+ * lldpctl_atom_set_*() functions on @c interface or @c neighbor either. If you
+ * do, you will get a @c LLDPCTL_ERR_INVALID_STATE error.
+ *
+ * @see lldpctl_watch_callback
+ */
+typedef void (*lldpctl_change_callback)(lldpctl_conn_t *conn, lldpctl_change_t type,
+    lldpctl_atom_t *interface, lldpctl_atom_t *neighbor, void *data);
+
+/**
+ * Callback function invoked when a change is detected.
+ *
+ * @param type      Type of change detected.
+ * @param interface Physical interface on which the change has happened.
+ * @param neighbor  Changed neighbor.
+ * @param data      Data provided when registering the callback.
+ *
+ * The provided interface and neighbor atoms are stolen by the callback: their
+ * reference count are decremented when the callback ends. If you want to keep a
+ * reference to it, be sure to increment the reference count in the callback.
+ *
+ * @see lldpctl_watch_callback2
+ */
+typedef void (*lldpctl_change_callback2)(lldpctl_change_t type,
+    lldpctl_atom_t *interface, lldpctl_atom_t *neighbor, void *data);
+
+/**
+ * Register a callback to be called on changes.
+ *
+ * @param conn Connection with lldpd.
+ * @param cb   Replace the current callback with the provided one.
+ * @param data Data that will be passed to the callback.
+ * @return 0 in case of success or -1 in case of errors.
+ *
+ * This function will register the necessity to push neighbor changes to lldpd
+ * and therefore will issue IO operations. The error code could then be @c
+ * LLDPCTL_ERR_WOULDBLOCK.
+ *
+ * @warning Once a callback is registered, the connection shouldn't be used for
+ * anything else than receiving notifications. If you do, you will get a @c
+ * LLDPCTL_ERR_INVALID_STATE error.
+ *
+ * @deprecated This function is deprecated and lldpctl_watch_callback2 should be
+ * used instead.
+ */
+int lldpctl_watch_callback(lldpctl_conn_t *conn, lldpctl_change_callback cb, void *data)
+    __attribute__((deprecated));
+
+/**
+ * Register a callback to be called on changes.
+ *
+ * @param conn Connection with lldpd.
+ * @param cb   Replace the current callback with the provided one.
+ * @param data Data that will be passed to the callback.
+ * @return 0 in case of success or -1 in case of errors.
+ *
+ * This function will register the necessity to push neighbor changes to lldpd
+ * and therefore will issue IO operations. The error code could then be @c
+ * LLDPCTL_ERR_WOULDBLOCK.
+ *
+ * @warning Once a callback is registered, the connection shouldn't be used for
+ * anything else than receiving notifications. If you do, you will get a @c
+ * LLDPCTL_ERR_INVALID_STATE error.
+ */
+int lldpctl_watch_callback2(lldpctl_conn_t *conn, lldpctl_change_callback2 cb,
+    void *data);
+
+/**
+ * Wait for the next change.
+ *
+ * @param conn Connection with lldpd.
+ * @return 0 on success or a negative integer in case of error.
+ *
+ * This function will return once a change has been detected. It is only useful
+ * as a main loop when using the builtin blocking IO mechanism.
+ */
+int lldpctl_watch(lldpctl_conn_t *conn);
+
+/**
+ * @defgroup liblldpctl_atom_get_special Retrieving atoms from lldpd
+ *
+ * Special access functions.
+ *
+ * Most information can be retrieved through @ref lldpctl_atom_get(), @ref
+ * lldpctl_atom_get_int(), @ref lldpctl_atom_get_str() or @ref
+ * lldpctl_atom_get_buffer() but some information can only be retrieved through
+ * special functions because IO operation is needed (and also, for some of them,
+ * because we don't have an atom yet).
+ *
+ * @{
+ */
+
+/**
+ * Retrieve global configuration of lldpd daemon.
+ *
+ * @param conn Connection with lldpd.
+ * @return The global configuration or @c NULL if an error happened.
+ *
+ * This function will make IO with the daemon to get the
+ * configuration. Depending on the IO model, information may not be available
+ * right now and the function should be called again later. If @c NULL is
+ * returned, check the last error. If it is @c LLDPCTL_ERR_WOULDBLOCK, try again
+ * later.
+ */
+lldpctl_atom_t *lldpctl_get_configuration(lldpctl_conn_t *conn);
+
+/**
+ * Retrieve the list of available interfaces.
+ *
+ * @param conn Previously allocated handler to a connection to lldpd.
+ * @return The list of available ports or @c NULL if an error happened.
+ *
+ * This function will make IO with the daemon to get the list of
+ * ports. Depending on the IO model, information may not be available right now
+ * and the function should be called again later. If @c NULL is returned, check
+ * what the last error is. If it is @c LLDPCTL_ERR_WOULDBLOCK, try again later
+ * (when more data is available).
+ *
+ * The list of available ports can be iterated with @ref lldpctl_atom_foreach().
+ */
+lldpctl_atom_t *lldpctl_get_interfaces(lldpctl_conn_t *conn);
+
+/**
+ * Retrieve the information related to the local chassis.
+ *
+ * @param conn Previously allocated handler to a connection to lldpd.
+ * @return Atom related to the local chassis which may be used in subsequent functions.
+ *
+ * This function may have to do IO to get the information related to the local
+ * chassis. Depending on the IO mode, information may not be available right now
+ * and the function should be called again later. If @c NULL is returned, check
+ * what the last error is. If it is @c LLDPCTL_ERR_WOULDBLOCK, try again later
+ * (when more data is available).
+ */
+lldpctl_atom_t *lldpctl_get_local_chassis(lldpctl_conn_t *conn);
+
+/**
+ * Retrieve the information related to a given interface.
+ *
+ * @param port The port we want to retrieve information from. This port is an
+ *             atom retrieved from an interation on @c lldpctl_get_interfaces().
+ * @return Atom related to this port which may be used in subsequent functions.
+ *
+ * This function may have to do IO to get the information related to the given
+ * port. Depending on the IO mode, information may not be available right now
+ * and the function should be called again later. If @c NULL is returned, check
+ * what the last error is. If it is @c LLDPCTL_ERR_WOULDBLOCK, try again later
+ * (when more data is available).
+ */
+lldpctl_atom_t *lldpctl_get_port(lldpctl_atom_t *port);
+
+/**
+ * Retrieve the default port information.
+ *
+ * This port contains default settings whenever a new port needs to be created.
+ *
+ * @param conn Previously allocated handler to a connection to lldpd.
+ * @return Atom of the default port which may be used in subsequent functions.
+ *
+ * This function may have to do IO to get the information related to the given
+ * port. Depending on the IO mode, information may not be available right now
+ * and the function should be called again later. If @c NULL is returned, check
+ * what the last error is. If it is @c LLDPCTL_ERR_WOULDBLOCK, try again later
+ * (when more data is available).
+ */
+lldpctl_atom_t *lldpctl_get_default_port(lldpctl_conn_t *conn);
+
+/**@}*/
+
+/**
+ * Piece of information that can be retrieved from/written to an atom.
+ *
+ * Each piece of information can potentially be retrieved as an atom (A), a
+ * string (S), a buffer (B) or an integer (I). Additionaly, when an information
+ * can be retrieved as an atom, it is usually iterable (L). When an atom can be
+ * retrieved as a string and as an additional type, the string is expected to be
+ * formatted. For example, the MAC address of a local port can be retrieved as a
+ * buffer and a string. As a string, you'll get something like
+ * "00:11:22:33:44:55". Also, all values that can be get as an integer or a
+ * buffer can be get as a string too. There is no special formatting in this
+ * case. "(BS)" means that the string get a special appropriate format.
+ *
+ * The name of a key is an indication on the type of atom that information can
+ * be extracted from. For example, @c lldpctl_k_med_policy_type can be extracted
+ * from an atom you got by iterating on @c lldpctl_k_port_med_policies. On the
+ * other hand, @c lldpctl_k_port_descr and @c lldpctl_k_chassis can be retrieved
+ * from an atom retrieved either by iterating @c lldpctl_k_port_neighbors or
+ * with @c lldpctl_get_port().
+ *
+ * Some values may be written. They are marked with (W). Such a change may or
+ * may not be transmitted immediatly. If they are not transmitted immediatly,
+ * this means that the resulting atom should be written to another atom. For
+ * example, when writting @c lldpctl_k_med_policy_tagged, you need to write the
+ * resulting atom to @c lldpctl_k_port_med_policies. If the change is
+ * transmitted immediatly, you need to check the error status of the connection
+ * to know if it has been transmitted correctly. Notably, if you get @c
+ * LLDPCTL_ERR_WOULDBLOCK, you need to try again later. Usually, changes are
+ * transmitted immediatly. The exception are changes that need to be grouped to
+ * be consistent, like a LLDP MED location. When a change is transmitted
+ * immediatly, it is marked with (O). @c lldpctl_atom_set_str() may accept a @c
+ * NULL value. This case is marked with (N) and usually reset the item to the
+ * default value or no value.
+ *
+ * Some values may also be created. They are flagged with (C). This only applies
+ * to elements that can be iterated (L) and written (W). The element created
+ * still needs to be appended to the list by being written to it. The creation
+ * is done with @c lldpctl_atom_create().
+ *
+ * An atom marked with (S) can be retrieved as a string only. It cannot be
+ * written. An atom marked with (IS) can be retrieved as an integer and features
+ * an appropriate representation as a string (usually, the name of a constant)
+ * which is more meaningful than just the integer. An atom marked as (I) can be
+ * retrieved as an integer and as a string. In the later case, this is just a
+ * string representation of the integer. An atom marked with (AL) can be
+ * retrieved as an atom only and can be iterated over. This is usually a list of
+ * things. An atom marked (I,W) can be read as an integer or a string and can be
+ * written as an integer. The change would not be commited until the atom is
+ * written to the nearest atom supporting (A,WO) operation (eventually with an
+ * indirection, i.e first write to a (A,W), then to a (A,WO)).
+ */
+typedef enum {
+	lldpctl_k_config_tx_interval,	/**< `(I,WO)` Transmit interval. When set to -1,
+					   it is meant to transmit now. */
+	lldpctl_k_config_receiveonly,	/**< `(I)` Receive only mode */
+	lldpctl_k_config_mgmt_pattern,	/**< `(S,WON)` Pattern to choose the management
+					   address */
+	lldpctl_k_config_iface_pattern, /**< `(S,WON)` Pattern of enabled interfaces */
+	lldpctl_k_config_cid_pattern, /**< `(S)` Interface pattern to choose the chassis
+					 ID */
+	lldpctl_k_config_description, /**< `(S,WON)` Chassis description overridden */
+	lldpctl_k_config_platform, /**< `(S,WON)` Platform description overridden (CDP)
+				    */
+	lldpctl_k_config_hostname, /**< `(S,WON)` System name overridden */
+	lldpctl_k_config_advertise_version,   /**< `(I)` Advertise version */
+	lldpctl_k_config_lldpmed_noinventory, /**< `(I)` Disable LLDP-MED inventory */
+	lldpctl_k_config_paused,	      /**< `(I,WO)` lldpd is paused */
+	lldpctl_k_config_fast_start_enabled,  /**< `(I,WO)` Is fast start enabled */
+	lldpctl_k_config_fast_start_interval, /**< `(I,WO)` Start fast transmit interval
+					       */
+	lldpctl_k_config_ifdescr_update,      /**< `(I,WO)` Enable or disable setting
+						 interface description */
+	lldpctl_k_config_iface_promisc, /**< `(I,WO)` Enable or disable promiscuous mode
+					   on interfaces */
+	lldpctl_k_config_chassis_cap_advertise,	 /**< `(I,WO)` Enable or disable chassis
+						    capabilities advertisement */
+	lldpctl_k_config_chassis_mgmt_advertise, /**< `(I,WO)` Enable or disable
+						    management addresses advertisement
+						  */
+	lldpctl_k_config_cid_string, /**< `(S,WON)` User defined string for the chassis
+					ID */
+	lldpctl_k_config_perm_iface_pattern,   /**< `(S,WON)` Pattern of permanent
+						  interfaces */
+	lldpctl_k_config_tx_interval_ms,       /**< `(I,WO)` Transmit interval in
+						  milliseconds. Set to -1 to transmit now. */
+	lldpctl_k_config_chassis_cap_override, /**< `(I,WO)` Override chassis
+						  capabilities */
+
+	lldpctl_k_interface_name = 1000, /**< `(S)` The interface name. */
+
+	lldpctl_k_port_name =
+	    1100,	      /**< `(S)` The port name. Only works for a local port. */
+	lldpctl_k_port_index, /**< `(I)` The port index. Only works for a local port. */
+	/**
+	 * `(AL)` The list of known neighbors for this port.
+	 *
+	 * A neighbor is in fact a remote port.
+	 */
+	lldpctl_k_port_neighbors = 1200,
+	lldpctl_k_port_protocol, /**< `(IS)` The protocol that was used to retrieve this
+				    information. */
+	lldpctl_k_port_age,	 /**< `(I)`  Age of information, seconds from epoch. */
+	lldpctl_k_port_id_subtype, /**< `(IS)` The subtype ID of this port.  */
+	lldpctl_k_port_id,	   /**< `(BS,WO)` The ID of this port. */
+	lldpctl_k_port_descr,	   /**< `(S,WO)` The description of this port. */
+	lldpctl_k_port_hidden,	   /**< `(I)` Is this port hidden (or should it be
+				      displayed?)? */
+	lldpctl_k_port_status, /**< `(IS,WO)` Operational status of this (local) port */
+	lldpctl_k_port_chassis, /**< `(A)` Chassis associated to the port */
+	lldpctl_k_port_ttl, /**< `(I)` TTL for port, 0 if info is attached to chassis */
+	lldpctl_k_port_vlan_tx, /**< `(I,W)` VLAN tag for TX on port, -1 VLAN disabled
+				 */
+
+	lldpctl_k_port_dot3_mfs = 1300,		/**< `(I)` MFS */
+	lldpctl_k_port_dot3_aggregid,		/**< `(I)` Port aggregation ID */
+	lldpctl_k_port_dot3_autoneg_support,	/**< `(I)` Autonegotiation support. */
+	lldpctl_k_port_dot3_autoneg_enabled,	/**< `(I)` Autonegotiation enabled. */
+	lldpctl_k_port_dot3_autoneg_advertised, /**< `(I)` Advertised protocols. See
+						   `LLDP_DOT3_LINK_AUTONEG_*` */
+	lldpctl_k_port_dot3_mautype, /**< `(IS)` Current MAU type. See `LLDP_DOT3_MAU_*`
+				      */
+
+	lldpctl_k_port_dot3_power = 1400, /**< `(A,WO)` Dot3 power related stuff. */
+	lldpctl_k_dot3_power_devicetype,  /**< `(IS,W)` Device type. See
+					     `LLDP_DOT3_POWER_PSE/PD` */
+	lldpctl_k_dot3_power_supported,	  /**< `(I,W)` Is MDI power supported. */
+	lldpctl_k_dot3_power_enabled,	  /**< `(I,W)` Is MDI power enabled. */
+	lldpctl_k_dot3_power_paircontrol, /**< `(I,W)` Pair-control enabled? */
+	lldpctl_k_dot3_power_pairs,	  /**< `(IS,W)` See `LLDP_DOT3_POWERPAIRS_*` */
+	lldpctl_k_dot3_power_class,	  /**< `(IS,W)` Power class. */
+	lldpctl_k_dot3_power_type,	  /**< `(I,W)` 802.3AT power type */
+	lldpctl_k_dot3_power_source,	  /**< `(IS,W)` 802.3AT power source */
+	lldpctl_k_dot3_power_priority,	  /**< `(IS,W)` 802.3AT power priority */
+	lldpctl_k_dot3_power_allocated,	  /**< `(I,W)` 802.3AT power allocated */
+	lldpctl_k_dot3_power_requested,	  /**< `(I,W)` 802.3AT power requested */
+
+	/* 802.3bt additions */
+	lldpctl_k_dot3_power_pd_4pid,	    /**< `(IS)` 802.3BT both modes supported? */
+	lldpctl_k_dot3_power_requested_a,   /**< `(I)` 802.3BT power value requested for
+					       A */
+	lldpctl_k_dot3_power_requested_b,   /**< `(I)` 802.3BT power value requested for
+					       B */
+	lldpctl_k_dot3_power_allocated_a,   /**< `(I)` 802.3BT power value allocated for
+					       A */
+	lldpctl_k_dot3_power_allocated_b,   /**< `(I)` 802.3BT power value allocated for
+					       B */
+	lldpctl_k_dot3_power_pse_status,    /**< `(IS)` 802.3BT PSE powering status */
+	lldpctl_k_dot3_power_pd_status,	    /**< `(IS)` 802.3BT PD powering status */
+	lldpctl_k_dot3_power_pse_pairs_ext, /**< `(IS)` 802.3BT PSE power pairs */
+	lldpctl_k_dot3_power_class_a,	    /**< `(IS)` 802.3BT power class for A */
+	lldpctl_k_dot3_power_class_b,	    /**< `(IS)` 802.3BT power class for B */
+	lldpctl_k_dot3_power_class_ext,	    /**< `(IS)` 802.3BT power class */
+	lldpctl_k_dot3_power_type_ext,	    /**< `(IS)` 802.3BT power type */
+	lldpctl_k_dot3_power_pd_load,	    /**< `(IS)` 802.3BT dualsig isolated? */
+	lldpctl_k_dot3_power_pse_max, /**< `(I)` 802.3BT maximum available power */
+
+	lldpctl_k_port_vlan_pvid = 1500, /**< `(I)` Primary VLAN ID */
+	lldpctl_k_port_vlans,		 /**< `(AL)` List of VLAN */
+	lldpctl_k_vlan_id,		 /**< `(I)` VLAN ID */
+	lldpctl_k_vlan_name,		 /**< `(S)` VLAN name */
+
+	lldpctl_k_port_ppvids = 1600, /**< `(AL)` List of PPVIDs */
+	lldpctl_k_ppvid_status, /**< `(I)` Status of PPVID (see `LLDP_PPVID_CAP_*`) */
+	lldpctl_k_ppvid_id,	/**< `(I)` ID of PPVID */
+
+	lldpctl_k_port_pis = 1700, /**< `(AL)` List of PIDs */
+	lldpctl_k_pi_id,	   /**< `(B)` PID value */
+
+	lldpctl_k_chassis_index = 1800,	 /**< `(I)` The chassis index. */
+	lldpctl_k_chassis_id_subtype,	 /**< `(IS)` The subtype ID of this chassis. */
+	lldpctl_k_chassis_id,		 /**< `(BS)` The ID of this chassis. */
+	lldpctl_k_chassis_name,		 /**< `(S)` The name of this chassis. */
+	lldpctl_k_chassis_descr,	 /**< `(S)` The description of this chassis. */
+	lldpctl_k_chassis_cap_available, /**< `(I)` Available capabilities (see
+					    `LLDP_CAP_*`) */
+	lldpctl_k_chassis_cap_enabled,	 /**< `(I)` Enabled capabilities (see
+					    `LLDP_CAP_*`) */
+	lldpctl_k_chassis_mgmt,		 /**< `(AL)` List of management addresses */
+	lldpctl_k_chassis_ttl,		 /**< Deprecated */
+
+	lldpctl_k_chassis_med_type =
+	    1900, /**< `(IS)` Chassis MED type. See `LLDP_MED_CLASS_*` */
+	lldpctl_k_chassis_med_cap,	    /**< `(I)` Available MED capabilities. See
+					       `LLDP_MED_CAP_*` */
+	lldpctl_k_chassis_med_inventory_hw, /**< `(S,W)` LLDP MED inventory "Hardware
+					       Revision" */
+	lldpctl_k_chassis_med_inventory_sw, /**< `(S,W)` LLDP MED inventory "Software
+					       Revision" */
+	lldpctl_k_chassis_med_inventory_fw, /**< `(S,W)` LLDP MED inventory "Firmware
+					       Revision" */
+	lldpctl_k_chassis_med_inventory_sn, /**< `(S,W)` LLDP MED inventory "Serial
+					       Number" */
+	lldpctl_k_chassis_med_inventory_manuf, /**< `(S,W)` LLDP MED inventory
+						  "Manufacturer" */
+	lldpctl_k_chassis_med_inventory_model, /**< `(S,W)` LLDP MED inventory "Model"
+						*/
+	lldpctl_k_chassis_med_inventory_asset, /**< `(S,W)` LLDP MED inventory "Asset
+						  ID" */
+
+	lldpctl_k_port_med_policies =
+	    2000,		      /**< `(AL,WO)` MED policies attached to a port. */
+	lldpctl_k_med_policy_type,    /**< `(IS,W)` MED policy app type. See
+					 `LLDP_MED_APPTYPE_*`. 0 if a policy is not
+					 defined. */
+	lldpctl_k_med_policy_unknown, /**< `(I,W)` Is MED policy defined? */
+	lldpctl_k_med_policy_tagged,  /**< `(I,W)` MED policy tagging */
+	lldpctl_k_med_policy_vid,     /**< `(I,W)` MED policy VID */
+	lldpctl_k_med_policy_priority, /**< `(I,W)` MED policy priority */
+	lldpctl_k_med_policy_dscp,     /**< `(I,W)` MED policy DSCP */
+
+	lldpctl_k_port_med_locations =
+	    2100, /**< `(AL,WO)` MED locations attached to a port. */
+	lldpctl_k_med_location_format,	  /**< `(IS,W)` MED location format. See
+					   * `LLDP_MED_LOCFORMAT_*`. 0 if this
+					   * location is not defined. When written,
+					   * the following fields will be zeroed
+					   * out. */
+	lldpctl_k_med_location_geoid,	  /**< `(IS,W)` MED geoid. See
+					     `LLDP_MED_LOCATION_GEOID_*`. Only if format is
+					     COORD. */
+	lldpctl_k_med_location_latitude,  /**< `(S,W)` MED latitude. Only if format is
+					     COORD. */
+	lldpctl_k_med_location_longitude, /**< `(S,W)` MED longitude. Only if format is
+					     COORD. */
+	lldpctl_k_med_location_altitude,  /**< `(S,W)` MED altitude. Only if format is
+					     COORD. */
+	lldpctl_k_med_location_altitude_unit, /**< `(S,W)` MED altitude unit. See
+					       * `LLDP_MED_LOCATION_ALTITUDE_UNIT_*`.
+					       * Only if format is COORD. */
+
+	lldpctl_k_med_location_country =
+	    2200, /**< `(S,W)` MED country. Only if format is CIVIC. */
+	lldpctl_k_med_location_elin, /**< `(S,W)` MED ELIN. Only if format is ELIN. */
+
+	lldpctl_k_med_location_ca_elements =
+	    2300, /**< `(AL,WC)` MED civic address elements. Only if format is CIVIC */
+	lldpctl_k_med_civicaddress_type,  /**< `(IS,W)` MED civic address type. */
+	lldpctl_k_med_civicaddress_value, /**< `(S,W)` MED civic address value. */
+
+	lldpctl_k_port_med_power = 2400, /**< `(A,WO)` LLDP-MED power related stuff. */
+	lldpctl_k_med_power_type,	 /**< `(IS,W)` LLDP MED power device type. See
+					    `LLDP_MED_POW_TYPE_*` */
+	lldpctl_k_med_power_source,	 /**< `(IS,W)` LLDP MED power source. See
+					    `LLDP_MED_POW_SOURCE_*` */
+	lldpctl_k_med_power_priority,	 /**< `(IS,W)` LLDP MED power priority. See
+					    `LLDP_MED_POW_PRIO_*` */
+	lldpctl_k_med_power_val,	 /**< `(I,W)` LLDP MED power value */
+
+	lldpctl_k_mgmt_ip = 3000,	    /**< `(S)` IP address */
+	lldpctl_k_mgmt_iface_index = 30001, /**< `(I)` Interface index */
+
+	lldpctl_k_tx_cnt = 4000,    /**< `(I)` tx cnt. Only works for a local port. */
+	lldpctl_k_rx_cnt,	    /**< `(I)` rx cnt. Only works for a local port. */
+	lldpctl_k_rx_discarded_cnt, /**< `(I)` discarded cnt. Only works for a local
+				       port. */
+	lldpctl_k_rx_unrecognized_cnt, /**< `(I)` unrecognized cnt. Only works for a
+					  local port. */
+	lldpctl_k_ageout_cnt,	  /**< `(I)` ageout cnt. Only works for a local port. */
+	lldpctl_k_insert_cnt,	  /**< `(I)` insert cnt. Only works for a local port. */
+	lldpctl_k_delete_cnt,	  /**< `(I)` delete cnt. Only works for a local port. */
+	lldpctl_k_config_tx_hold, /**< `(I,WO)` Transmit hold interval. */
+	lldpctl_k_config_bond_slave_src_mac_type, /**< `(I,WO)` bond slave src mac type.
+						   */
+	lldpctl_k_config_lldp_portid_type, /**< `(I,WO)` LLDP PortID TLV Subtype */
+	lldpctl_k_config_lldp_agent_type,  /**< `(I,WO)` LLDP agent type */
+	lldpctl_k_config_max_neighbors,	   /**< `(I,WO)`Maximum number of neighbors per
+					      port. */
+
+	lldpctl_k_custom_tlvs = 5000, /**< `(AL)` custom TLVs */
+	lldpctl_k_custom_tlvs_clear,  /**< `(WO)` clear list of custom TLVs */
+	lldpctl_k_custom_tlv,	      /**< `(AL,WO)` custom TLV **/
+	lldpctl_k_custom_tlv_oui,     /**< `(B,W)` custom TLV Organizationally Unique
+					 Identifier. Default is 0 (3 bytes) */
+	lldpctl_k_custom_tlv_oui_subtype, /**< `(I,W)` custom TLV subtype. Default is 0
+					     (1 byte) */
+	lldpctl_k_custom_tlv_oui_info_string, /**< `(BS,W)` custom TLV Organizationally
+						 Unique Identifier Information String
+						 (up to 507 bytes) */
+	lldpctl_k_custom_tlv_op,	      /**< `(S,W)` custom TLV operation */
+
+} lldpctl_key_t;
+
+/**
+ * Get a map related to a key.
+ *
+ * Many keys expect to be written with a discrete number of values. Take for
+ * example @c lldpctl_k_med_civicaddress_type, it can take any integer between 1
+ * and 128. However, each integer can be named. It can be useful for an
+ * application to get a translation between the integer that can be provided and
+ * a more human-readable name. This function allows to retrieve the
+ * corresponding map.
+ *
+ * @param key    The piece of information we want a map from.
+ * @return       The map or @c NULL if no map is available.
+ *
+ * The returned map has its last element set to 0. It is also expected that the
+ * string value can be used with a set operation. It will be translated to the
+ * integer value.
+ */
+lldpctl_map_t *lldpctl_key_get_map(lldpctl_key_t key);
+
+/**
+ * Retrieve a bit of information as an atom.
+ *
+ * @param atom The atom we want to query.
+ * @param key  The information we want from the atom.
+ * @return The atom representing the requested information or @c NULL if the
+ *         information is not available.
+ *
+ * Not every value of @c info will be available as an atom. See the
+ * documentation of @c lldpctl_key_t for values accepting to be extracted as an
+ * atom. Usually, this is only iterable values or values representing a complex
+ * object.
+ *
+ * The provided atom is not a _borrowed_ reference. You need to decrement the
+ * reference count when you don't need it anymore.
+ *
+ * As a convenience, this function will return @c NULL if the first parameter is
+ * @c NULL and no error will be raised.
+ */
+lldpctl_atom_t *lldpctl_atom_get(lldpctl_atom_t *atom, lldpctl_key_t key);
+
+/**
+ * Set a bit of information with an atom.
+ *
+ * @param atom  The atom we want to write to.
+ * @param key   The key information we want to write.
+ * @param value The value of the information we want to write.
+ * @return The updated atom with the appropriate information.
+ *
+ * This function will return @c NULL in case of error. If the last error is @c
+ * LLDPCTL_ERR_WOULDBLOCK, the write should be retried later with the exact same
+ * parameters. LLDPCTL_ERR_BAD_VALUE is raised when the provided atom is not
+ * correct.
+ */
+lldpctl_atom_t *lldpctl_atom_set(lldpctl_atom_t *atom, lldpctl_key_t key,
+    lldpctl_atom_t *value);
+
+/**
+ * Retrieve a bit of information as a null-terminated string.
+ *
+ * @param atom The atom we want to query.
+ * @param key  The information we want from the atom.
+ * @return The requested string or @c NULL if the information is not available.
+ *
+ * Not every value of @c info will be available as a string. See the
+ * documentation of @c lldpctl_key_t for values accepting to be extracted as a
+ * string. Usually, only piece of information stored as string are available in
+ * this form but sometimes, you can get a nice formatted string instead of an
+ * integer with this function.
+ *
+ * As a convenience, this function will return @c NULL if the first parameter is
+ * @c NULL and no error will be raised.
+ *
+ * The provided string may live inside the atom providing it. If you need it
+ * longer, duplicate it.
+ */
+const char *lldpctl_atom_get_str(lldpctl_atom_t *atom, lldpctl_key_t key);
+
+/**
+ * Set a bit of information using a null-terminated string.
+ *
+ * @param atom  The atom we want to write to.
+ * @param key   The key information we want to write.
+ * @param value The value of the information we want to write.
+ * @return The updated atom with the appropriate information.
+ *
+ * This function will return @c NULL in case of error. If the last error is @c
+ * LLDPCTL_ERR_WOULDBLOCK, the write should be retried later with the exact same
+ * parameters. LLDPCTL_ERR_BAD_VALUE is raised when the provided atom is not
+ * correct.
+ */
+lldpctl_atom_t *lldpctl_atom_set_str(lldpctl_atom_t *atom, lldpctl_key_t key,
+    const char *value);
+
+/**
+ * Retrieve a bit of information as a buffer.
+ *
+ * @param atom        The atom we want to query.
+ * @param key         The information we want from the atom.
+ * @param[out] length The size of the returned buffer.
+ * @return The requested buffer or @c NULL if the information is not available.
+ *
+ * Not every value of @c info will be available as a buffer. See the
+ * documentation of @c lldpctl_key_t for values accepting to be extracted as a
+ * string. Usually, only piece of information stored as buffer are available in
+ * this form.
+ *
+ * As a convenience, this function will return @c NULL if the first parameter is
+ * @c NULL and no error will be raised. If this function returns @c NULL, the
+ * third parameter is set to 0.
+ *
+ * The provided buffer may live inside the atom providing it. If you need it
+ * longer, duplicate it.
+ */
+const uint8_t *lldpctl_atom_get_buffer(lldpctl_atom_t *atom, lldpctl_key_t key,
+    size_t *length);
+
+/**
+ * Set a bit of information using a buffer
+ *
+ * @param atom   The atom we want to write to.
+ * @param key    The key information we want to write.
+ * @param value  The value of the information we want to write.
+ * @param length The length of the provided buffer.
+ * @return The updated atom with the appropriate information.
+ *
+ * This function will return @c NULL in case of error. If the last error is @c
+ * LLDPCTL_ERR_WOULDBLOCK, the write should be retried later with the exact same
+ * parameters. LLDPCTL_ERR_BAD_VALUE is raised when the provided atom is not
+ * correct.
+ */
+lldpctl_atom_t *lldpctl_atom_set_buffer(lldpctl_atom_t *atom, lldpctl_key_t key,
+    const uint8_t *value, size_t length);
+
+/**
+ * Retrieve a bit of information as an integer.
+ *
+ * @param atom The atom we want to query.
+ * @param key  The information we want from the atom.
+ * @return The requested integer or -1 if the information is not available
+ *
+ * Not every value of @c info will be available as an integer. See the
+ * documentation of @c lldpctl_key_t for values accepting to be extracted as a
+ * string. Usually, only piece of information stored as an integer are available
+ * in this form.
+ *
+ * Only @c lldpctl_last_error() can tell if the returned value is an error or
+ * not. However, most values extracted from lldpd cannot be negative.
+ */
+long int lldpctl_atom_get_int(lldpctl_atom_t *atom, lldpctl_key_t key);
+
+/**
+ * Set a bit of information using an integer
+ *
+ * @param atom   The atom we want to write to.
+ * @param key    The key information we want to write.
+ * @param value  The value of the information we want to write.
+ * @return The updated atom with the appropriate information.
+ *
+ * This function will return @c NULL in case of error. If the last error is @c
+ * LLDPCTL_ERR_WOULDBLOCK, the write should be retried later with the exact same
+ * parameters. LLDPCTL_ERR_BAD_VALUE is raised when the provided atom is not
+ * correct.
+ */
+lldpctl_atom_t *lldpctl_atom_set_int(lldpctl_atom_t *atom, lldpctl_key_t key,
+    long int value);
+
+/**
+ * @defgroup liblldpctl_atom_iter Iterating over atoms
+ *
+ * Iterate over atoms (lists).
+ *
+ * @{
+ */
+/**
+ * Iterator over an iterable atom (a list of ports, a list of VLAN, ...). When
+ * an atom is a list, it can be iterated over to extract the appropriate values.
+ *
+ * @see lldpctl_atom_iter(), lldpctl_atom_iter_next(), lldpctl_atom_iter_value()
+ */
+typedef struct lldpctl_atom_iter_t lldpctl_atom_iter_t;
+
+/**
+ * Return an iterator over a given atom.
+ *
+ * If an atom is iterable (if it is a list, like a list of ports, a list of
+ * VLAN, a list of neighbors), it is possible to iterate over it. First use this
+ * function to get an iterator then use @c lldpctl_atom_iter_next() to get the
+ * next item and @c lldpctl_atom_iter_value() to the actuel item.
+ *
+ * @param atom The atom we want to create an iterator from.
+ * @return The iterator or @c NULL if an error happened or if the atom is empty
+ *         (check with @c lldpctl_last_error()).
+ *
+ * As a convenience, if the provided atom is @c NULL, this function will return
+ * @c NULL and no error will be raised.
+ */
+lldpctl_atom_iter_t *lldpctl_atom_iter(lldpctl_atom_t *atom);
+
+/**
+ * Return the next element of an iterator.
+ *
+ * @param atom The atom we are currently iterating.
+ * @param iter The iterator we want the next element from.
+ * @return An iterator starting on the next element or @c NULL if we have no
+ *         more elements
+ *
+ * @see lldpctl_atom_iter(), lldpctl_atom_iter_value().
+ *
+ * As a convenience, if the provided atom is @c NULL, this function will return
+ * @c NULL and no error will be raised.
+ */
+lldpctl_atom_iter_t *lldpctl_atom_iter_next(lldpctl_atom_t *atom,
+    lldpctl_atom_iter_t *iter);
+
+/**
+ * Return the value of an iterator.
+ *
+ * @param atom The atom we are currently iterating.
+ * @param iter The iterator we want the next element from.
+ * @return The atom currently associated with the iterator.
+ *
+ * @see lldpctl_atom_iter(), lldpctl_atom_iter_next().
+ */
+lldpctl_atom_t *lldpctl_atom_iter_value(lldpctl_atom_t *atom,
+    lldpctl_atom_iter_t *iter);
+
+/**
+ * Convenience macro to iter over every value of an iterable object.
+ *
+ * @param atom  The atom you want to iterate on.
+ * @param value Atom name that will be used to contain each value.
+ *
+ * This macro behaves as a for loop. Moreover, at the end of each iteration, the
+ * reference count of the provided value is decremented. If you need to use it
+ * outside of the loop, you need to increment it.
+ */
+#define lldpctl_atom_foreach(atom, value)                                     \
+  for (lldpctl_atom_iter_t *iter##_LINE_ = lldpctl_atom_iter(atom);           \
+       iter##_LINE_ && (value = lldpctl_atom_iter_value(atom, iter##_LINE_)); \
+       iter##_LINE_ = lldpctl_atom_iter_next(atom, iter##_LINE_),             \
+			   lldpctl_atom_dec_ref(value))
+
+/**
+ * Create a new value for an iterable element.
+ *
+ * The value is meant to be appended using @c lldpctl_atom_set(). Currently,
+ * there is no way to delete an element from a list. It is also not advisable to
+ * use getters on a newly created object until it is fully initialized. If its
+ * internal representation is using a buffer, it may not be initialized until
+ * the first set.
+ *
+ * @param atom The atom we want to create a new element for.
+ * @return The new element.
+ */
+lldpctl_atom_t *lldpctl_atom_create(lldpctl_atom_t *atom);
+/**@}*/
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+/**@}*/
+
+#endif
diff --git a/src/lib/lldpctl.map b/src/lib/lldpctl.map
new file mode 100644
index 0000000..c602b64
--- /dev/null
+++ b/src/lib/lldpctl.map
@@ -0,0 +1,53 @@
+LIBLLDPCTL_4.9 {
+ global:
+  lldpctl_watch_callback2;
+};
+
+LIBLLDPCTL_4.8 {
+ global:
+  lldpctl_get_default_port;
+};
+
+LIBLLDPCTL_4.7 {
+ global:
+  lldpctl_get_local_chassis;
+};
+
+LIBLLDPCTL_4.6 {
+ global:
+  lldpctl_atom_create;
+  lldpctl_atom_dec_ref;
+  lldpctl_atom_get;
+  lldpctl_atom_get_buffer;
+  lldpctl_atom_get_connection;
+  lldpctl_atom_get_int;
+  lldpctl_atom_get_str;
+  lldpctl_atom_inc_ref;
+  lldpctl_atom_iter;
+  lldpctl_atom_iter_next;
+  lldpctl_atom_iter_value;
+  lldpctl_atom_set;
+  lldpctl_atom_set_buffer;
+  lldpctl_atom_set_int;
+  lldpctl_atom_set_str;
+  lldpctl_get_configuration;
+  lldpctl_get_default_transport;
+  lldpctl_get_interfaces;
+  lldpctl_get_port;
+  lldpctl_key_get_map;
+  lldpctl_last_error;
+  lldpctl_log_callback;
+  lldpctl_log_level;
+  lldpctl_new;
+  lldpctl_new_name;
+  lldpctl_process_conn_buffer;
+  lldpctl_recv;
+  lldpctl_release;
+  lldpctl_send;
+  lldpctl_strerror;
+  lldpctl_watch;
+  lldpctl_watch_callback;
+
+ local:
+  *;
+};
diff --git a/src/lib/lldpctl.pc.in b/src/lib/lldpctl.pc.in
new file mode 100644
index 0000000..65ce1ef
--- /dev/null
+++ b/src/lib/lldpctl.pc.in
@@ -0,0 +1,6 @@
+Name: lldpctl
+Description: Library to interface with lldpd, a 802.1AB daemon
+Version: @VERSION@
+URL: @PACKAGE_URL@
+Libs: -L@libdir@ -llldpctl
+Cflags: -I@includedir@