net: add confirm_neigh method to dst_ops

Add confirm_neigh method to dst_ops and use it from IPv4 and IPv6
to lookup and confirm the neighbour. Its usage via the new helper
dst_confirm_neigh() should be restricted to MSG_PROBE users for
performance reasons.

For XFRM prefer the last tunnel address, if present. With help
from Steffen Klassert.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 42 insertions, 0 deletions

diff --git a/include/net/arp.h b/include/net/arp.h

path: root/Template

define TOOL_templ
  include $(1)/Makefile
  $(1) $(1)%: BUILD_DIR := $(1)
  $(1) $(1)%: CFLAGS += $$($(1)-eflags)
  $(1)_prehook:
	$(Q)echo "$(bold)$(WHAT) $(1):$(normal)"
  $(1): $(1)_prehook $$($(1)-lex) $$($(1)-yaac) $$(patsubst %.o,$(1)/%.o,$$($(1)-objs))
  $(1)_clean: $(1)_clean_custom
	$(Q)$$(call RM,$(1)/*.o $(1)/$(1) $(1)/*.gz)
  $(1)_do_install:
	$(Q)$$(call INSTX,$(1)/$(1),$$(DESTDIR)$$(SBINDIR))
	$(Q)$(GZIP) $(1).8 > $(1)/$(1).8.gz
	$(Q)$$(call INST,$(1)/$(1).8.gz,$$(DESTDIR)$$(MAN8DIR))
	$(Q)$$(foreach file,$$($(1)-confs),$$(call INST,$$(file),$$(DESTDIR)$$(ETCDIRE));)
  $(1)_install: $(1)_do_install $(1)_post_install
  $(1)_uninstall: $(1)_uninstall_custom
	$(Q)$$(call RM,$$(DESTDIR)$$(SBINDIR)/$(1))
	$(Q)$$(call RM,$$(DESTDIR)$$(MAN8DIR)/$(1).8.gz)
  $(1)/%.yy.o: $(1)/%.yy.c
	$$(CCQ) $$(CFLAGS) -o $$@ -c $$<
  $(1)/%.tab.o: $(1)/%.tab.c
	$$(CCQ) $$(CFLAGS) -o $$@ -c $$<
  $(1)/%.o: %.c %.h
	$$(CHECK) $$(CFLAGS) $$(CHECKFLAGS) $$<
	$$(CCQ) $$(CFLAGS) -o $(1)/$$(shell basename $$@) -c $$<
  $(1)/%.o: %.c
	$$(CHECK) $$(CFLAGS) $$(CHECKFLAGS) $$<
	$$(CCQ) $$(CFLAGS) -o $(1)/$$(shell basename $$@) -c $$<
endef