lldpad: initial git commit

Initial git commit for open-lldp.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>

ChangeLog

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+Changes from 0.9.39 through 0.940
+- Add iSCSI TLV support
+Changes from 0.9.26 through 0.9.39
+- Numerous bug fixes and code cleanup
+- Reworked netlink event handling to be more robust and handle dropped nlmsgs.
+- DCBx puts netdevice into linkmode until dcbx negotiation complete
+Changes from 0.9.21 through 0.9.26
+- Fork dcbd into lldpad and make the daemon a generic LLDP agent deamon.
+Changes from 0.9.19 through 0.9.21
+- Update libconfig to version 1.3.2.  Fix code to match API changes.
+- Add dcbd -k -s options in README and manpage.
+- Fix dcbd seg fault when dcbd.conf version string is not 1.0.
+- Move the dcbd.conf out of the /etc/sysconfig/ directory into /var/lib/dcbd.
+Changes from 0.9.15 through 0.9.19
+- Send App priority information to driver via netlink (if kernel supports)
+- dcbtool returns non-zero status on error
+- Allow user priority percentages (uppct) to be changed while using DCBX v2.
+- Improved dcbtool parameter parsing to detect invalid arguments.
+- Fixed segfault which occurred in some cases of the config file was removed.
+- Fixed dcbtool get app oper error.
+Changes from 0.9.7 through 0.9.15
+- Set FeatureSeqNo to 1 in the case of peer expiration.
+- Use the MSG_DONTWAIT flag in the recv socket call to avoid potential of making
+  a blocking call - which would hang dcbd.
+- Move initialization of control interface before call to init ports to
+  avoid use of uninitialized variable.
+- Add support of SAN MAC address, get SAN MAC address through driver interface. 
+- Add -s, -k command line options.
+- Dcbd, dcbtool man pages and README are updated.
+- Set the SO_PRIORITY of the LLDP socket to TC_PRIO_CONTROL (7).  This will
+  help the driver to know not to priority tag the LLDP packets.
+- Add shared memory segment to save some DCBX state information when
+  dcbd stops.  Used to restore DCBX state on restart of dcbd.
+- Change default dcbx version to 2.
+- Only send the version 2 DCBX TLV when in dcbx version 2 mode (instead of
+  both version TLVs).
+- Fix dcbd init script so that it loads the dcbnl module for kernels which
+  have the option of a dcbnl module.
+- A dcbtool error message was changed from "Device not found" to 
+  "Device not found, link down or DCB not enabled"
+- Each DCB feature (PFC, PG, ...) was modified in driver to indicate whether
+  or not a hw reset is required when the feature configuration changes.
+  If a HW reset will occur, then dcbd will not react to the next link bounce.
+- Ensure that HW flow control settings are synced with the DCBX operational
+  state.
+- Runlevel 4 removed from the dcbd init script.
+- Fix error flag for willing==willing case.
+- Don't print out error message anymore in remove_adapter for the default
+  config object for objects which aren't created for the default config.
+- Fixed potential memory leak in rare shutdown scenarios
+- Deleted line of unreachable dead code.
+- Remove BCN support from dcbd and dcbtool
+- Limit values for DcbxSubtype  - Write Operational DcbxSubtype  for query
+- For dcbx version 2, rebalance bandwidth % assignements on set of Priority
+  Group feature

Makefile.am

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+# target programs to be installed in ${sbindir}
+sbin_PROGRAMS = lldpad dcbtool lldptool
+
+# package nltest, but do not install it anywhere
+noinst_PROGRAMS = nltest
+
+# look for header files in the include directory
+# pass the value of ${sysconfdir} to the C pre-processor as SYSCONFDIR
+AM_CPPFLAGS = -I${srcdir}/include -DSYSCONFDIR="\"${sysconfdir}\""
+
+## system requires a shared libconfig
+AM_CFLAGS = $(LIBCONFIG_CFLAGS)
+AM_LDFLAGS = $(LIBCONFIG_LIBS)
+
+## header files to be installed, for programs using the client interface to lldpad 
+lldpad_includedir= ${includedir}/lldpad
+
+lldpad_include_HEADERS = include/dcb_types.h \
+include/clif.h include/lldp_dcbx_cmds.h \
+include/lldpad.h include/lldp_mand_cmds.h \
+include/clif_msgs.h include/lldp_basman_cmds.h include/lldp_8023_cmds.h \
+include/lldp_med_cmds.h include/lldp_util.h
+
+noinst_HEADERS = include/config.h include/ctrl_iface.h \
+include/dcb_driver_interface.h \
+include/dcb_events.h include/dcb_persist_store.h include/dcb_protocol.h \
+include/dcb_rule_chk.h include/lldp_dcbx_nl.h include/eloop.h \
+include/lldpad_shm.h include/event_iface.h include/messages.h \
+include/parse_cli.h include/version.h include/lldptool_cli.h include/list.h \
+include/lldp_mand_clif.h include/lldp_basman_clif.h include/lldp_med_clif.h \
+include/lldp_8023_clif.h include/lldp_dcbx_clif.h include/lldptool.h \
+include/lldp_rtnl.h include/dcbtool.h include/lldp_dcbx_cfg.h
+
+lldpad_SOURCES = lldpad.c config.c lldp_dcbx_nl.c ctrl_iface.c \
+event_iface.c eloop.c lldp_dcbx_cmds.c log.c lldpad_shm.c \
+dcb_protocol.c dcb_rule_chk.c  list.c lldp_rtnl.c \
+$(lldpad_include_HEADERS) $(noinst_HEADERS) \
+lldp/ports.c lldp/agent.c lldp/l2_packet_linux.c lldp/tx.c \
+lldp/rx.c lldp/agent.h lldp/l2_packet.h lldp/mibdata.h lldp/ports.h \
+lldp/states.h include/lldp.h include/lldp_mod.h \
+lldp_dcbx.c include/lldp_dcbx.h tlv_dcbx.c include/tlv_dcbx.h \
+lldp_dcbx_cfg.c include/lldp_dcbx_cfg.h lldp_util.c \
+lldp_mand.c include/lldp_mand.h \
+lldp_mand_cmds.c lldp_basman_cmds.c lldp_8023_cmds.c lldp_med_cmds.c \
+lldp_tlv.c include/lldp_tlv.h \
+lldp_basman.c include/lldp_basman.h \
+lldp_med.c include/lldp_med.h \
+lldp_8023.c include/lldp_8023.h
+
+dcbtool_SOURCES = dcbtool.c clif.c dcbtool_cmds.c parse_cli.l \
+$(lldpad_include_HEADERS) $(noinst_HEADERS)
+
+lldptool_SOURCES = lldptool.c clif.c lldptool_cmds.c lldp_rtnl.c \
+		   lldp_mand_clif.c lldp_basman_clif.c lldp_med_clif.c \
+		   lldp_8023_clif.c lldp_dcbx_clif.c lldp_util.c \
+		   $(lldpad_include_HEADERS) $(noinst_HEADERS)
+
+nltest_SOURCES = nltest.c nltest.h
+
+## man pages
+dist_man_MANS = lldpad.8 dcbtool.8 lldptool.8
+
+## force the creation of an empty configuration directory at install time
+lldpadconfigdir = /var/lib/lldpad
+lldpadconfig_DATA =
+
+## pkg-config data file, for client interface software to find headers
+pkgconfigdir = ${libdir}/pkgconfig
+pkgconfig_DATA = lldpad.pc
+
+## put a spec file and documentation in the distribution archive
+dist_noinst_DATA = lldpad.spec README COPYING ChangeLog
+
+## lldpad.init is listed here because it gets installed from install-data-local
+dist_noinst_SCRIPTS = lldpad.init
+
+## special hooks to handle the init script
+install-data-local: lldpad.init
+	$(MKDIR_P) $(DESTDIR)/etc/init.d
+	$(INSTALL_SCRIPT) lldpad.init $(DESTDIR)/etc/init.d/lldpad
+
+install-data-hook:
+	/sbin/chkconfig --add lldpad || true
+	## provide legacy support for apps that use the old dcbd interface.
+	test -e $(includedir)/dcbd || `ln -T -s $(includedir)/lldpad $(includedir)/dcbd`
+	test -e $(includedir)/dcbd/clif_cmds.h || `ln -T -s $(includedir)/lldpad/lldp_dcbx_cmds.h $(includedir)/dcbd/clif_cmds.h`
+
+uninstall-local:
+	/sbin/chkconfig --del lldpad || true
+	rm -f '$(DESTDIR)/etc/init.d/lldpad'
+	rm -f '$(includedir)/dcbd/clif_cmds.h'
+	rm -f '$(includedir)/dcbd'
+