iproute2: update to 5.11.0

The latest iproute2 version brings various improvements and fixes:
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/log/?qt=range&q=v5.10.0..v5.11.0



In particular, ip and tc now use libbpf as the standard way to load BPF
programs, rather than the old, limited custom loader. This allows more
consistent and featureful BPF program handling e.g. support for global
initialized variables.

Also fix a longstanding problem with iproute2 builds where unneeded DSO
dependencies are added to most utilities, bloating their installation
footprint. From research and testing, explicitly using a "--as-needed"
linker flag avoids the issue. Update accordingly and drop extra package
dependencies from Makefile.

Additional build and packaging updates include:

  - install missing development header to iproute2/bpf_elf.h
  - propagate OpenWrt verbose flag during build
  - update and refresh patches

Compile and run tested: QEMU/malta-mips32be on kernels 5.4 & 5.10.

All iproute2 packages were built and installed to the test image. Some
regression testing using ip-full and tc was successfully performed to
exercise several kmods, tc modules, and simple BPF programs.

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>

package/network/utils/iproute2/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=iproute2
-PKG_VERSION:=5.10.0
+PKG_VERSION:=5.11.0
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@KERNEL/linux/utils/net/iproute2
-PKG_HASH:=a54a34ae309c0406b2d1fb3a46158613ffb83d33fefd5d4a27f0010237ac53e9
+PKG_HASH:=c5e2ea108212b3445051b35953ec267f9f3469e1d5c67ac034ab559849505c54
 PKG_BUILD_PARALLEL:=1
 PKG_BUILD_DEPENDS:=iptables
 PKG_LICENSE:=GPL-2.0
@@ -47,7 +47,7 @@ $(call Package/iproute2/Default)
  VARIANT:=full
  PROVIDES:=ip
  ALTERNATIVES:=300:/sbin/ip:/usr/libexec/ip-full
- DEPENDS:=+libnl-tiny +libelf +(PACKAGE_devlink||PACKAGE_rdma):libmnl
+ DEPENDS:=+libnl-tiny +libbpf +(PACKAGE_devlink||PACKAGE_rdma):libmnl
 endef
 
 define Package/tc
@@ -55,56 +55,59 @@ $(call Package/iproute2/Default)
   TITLE:=Traffic control utility
   VARIANT:=tc
   PROVIDES:=tc
-  DEPENDS:=+kmod-sched-core +libxtables +libelf +(PACKAGE_devlink||PACKAGE_rdma):libmnl
+  DEPENDS:=+kmod-sched-core +libxtables +libbpf +(PACKAGE_devlink||PACKAGE_rdma):libmnl
 endef
 
 define Package/genl
 $(call Package/iproute2/Default)
   TITLE:=General netlink utility frontend
-  DEPENDS:=+libnl-tiny +(PACKAGE_devlink||PACKAGE_rdma):libmnl +(PACKAGE_tc||PACKAGE_ip-full):libelf
+  DEPENDS:=+libnl-tiny +(PACKAGE_devlink||PACKAGE_rdma):libmnl
 endef
 
 define Package/ip-bridge
 $(call Package/iproute2/Default)
   TITLE:=Bridge configuration utility from iproute2
-  DEPENDS:=+libnl-tiny +(PACKAGE_devlink||PACKAGE_rdma):libmnl +(PACKAGE_tc||PACKAGE_ip-full):libelf
+  DEPENDS:=+libnl-tiny +(PACKAGE_devlink||PACKAGE_rdma):libmnl
 endef
 
 define Package/ss
 $(call Package/iproute2/Default)
   TITLE:=Socket statistics utility
-  DEPENDS:=+libnl-tiny +(PACKAGE_devlink||PACKAGE_rdma):libmnl +(PACKAGE_tc||PACKAGE_ip-full):libelf +kmod-netlink-diag
+  DEPENDS:=+libnl-tiny +(PACKAGE_devlink||PACKAGE_rdma):libmnl +kmod-netlink-diag
 endef
 
 define Package/nstat
 $(call Package/iproute2/Default)
   TITLE:=Network statistics utility
-  DEPENDS:=+libnl-tiny +(PACKAGE_devlink||PACKAGE_rdma):libmnl +(PACKAGE_tc||PACKAGE_ip-full):libelf
+  DEPENDS:=+libnl-tiny +(PACKAGE_devlink||PACKAGE_rdma):libmnl
 endef
 
 define Package/devlink
 $(call Package/iproute2/Default)
   TITLE:=Network devlink utility
-  DEPENDS:=+libmnl +(PACKAGE_tc||PACKAGE_ip-full):libelf
+  DEPENDS:=+libmnl
 endef
 
 define Package/rdma
 $(call Package/iproute2/Default)
   TITLE:=Network rdma utility
-  DEPENDS:=+libmnl +(PACKAGE_tc||PACKAGE_ip-full):libelf
+  DEPENDS:=+libmnl
 endef
 
 ifeq ($(BUILD_VARIANT),tiny)
   IP_CONFIG_TINY:=y
+  LIBBPF_FORCE:=off
 endif
 
 ifeq ($(BUILD_VARIANT),full)
   HAVE_ELF:=y
+  LIBBPF_FORCE:=on
   HAVE_CAP:=n
 endif
 
 ifeq ($(BUILD_VARIANT),tc)
   HAVE_ELF:=y
+  LIBBPF_FORCE:=on
   SHARED_LIBS:=y
 endif
 
@@ -122,26 +125,29 @@ define Build/Configure
 endef
 
 TARGET_CFLAGS += -ffunction-sections -fdata-sections -flto
-TARGET_LDFLAGS += -Wl,--gc-sections
+TARGET_LDFLAGS += -Wl,--gc-sections -Wl,--as-needed
 TARGET_CPPFLAGS += -I$(STAGING_DIR)/usr/include/libnl-tiny
 
 MAKE_FLAGS += \
 	KERNEL_INCLUDE="$(LINUX_DIR)/user_headers/include" \
 	SHARED_LIBS=$(SHARED_LIBS) \
 	IP_CONFIG_TINY=$(IP_CONFIG_TINY) \
+	LIBBPF_FORCE=$(LIBBPF_FORCE) \
 	HAVE_ELF=$(HAVE_ELF) \
 	HAVE_MNL=$(HAVE_MNL) \
 	HAVE_CAP=$(HAVE_CAP) \
 	IPT_LIB_DIR=/usr/lib/iptables \
 	XT_LIB_DIR=/usr/lib/iptables \
-	FPIC="$(FPIC)"
+	FPIC="$(FPIC)" \
+	$(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='')
 
 define Build/Compile
 	+$(MAKE_VARS) $(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR) $(MAKE_FLAGS)
 endef
 
 define Build/InstallDev
-	$(INSTALL_DIR) $(1)/usr/include
+	$(INSTALL_DIR) $(1)/usr/include/iproute2
+	$(CP) $(PKG_BUILD_DIR)/include/bpf_elf.h $(1)/usr/include/iproute2
 	$(CP) $(PKG_BUILD_DIR)/include/{libgenl,libnetlink}.h $(1)/usr/include/
 	$(INSTALL_DIR) $(1)/usr/lib
 	$(CP) $(PKG_BUILD_DIR)/lib/libnetlink.a $(1)/usr/lib/

package/network/utils/iproute2/patches/100-configure.patch

 --- a/configure
 +++ b/configure
-@@ -34,7 +34,8 @@ int main(int argc, char **argv) {
+@@ -39,7 +39,8 @@ int main(int argc, char **argv) {
  }
  EOF
  

package/network/utils/iproute2/patches/130-no_netem.patch

@@ -4,8 +4,8 @@
  CFLAGS := $(WFLAGS) $(CCOPTS) -I../include -I../include/uapi $(DEFINES) $(CFLAGS)
  YACCFLAGS = -d -t -v
  
--SUBDIRS=lib ip tc bridge misc netem genl tipc devlink rdma man
-+SUBDIRS=lib ip tc bridge misc genl tipc devlink rdma man
+-SUBDIRS=lib ip tc bridge misc netem genl tipc devlink rdma dcb man
++SUBDIRS=lib ip tc bridge misc genl tipc devlink rdma dcb man
  
  LIBNETLINK=../lib/libutil.a ../lib/libnetlink.a
  LDLIBS += $(LIBNETLINK)

package/network/utils/iproute2/patches/140-allow_pfifo_fast.patch

 --- a/tc/q_fifo.c
 +++ b/tc/q_fifo.c
-@@ -99,5 +99,6 @@ struct qdisc_util pfifo_head_drop_qdisc_
+@@ -95,5 +95,6 @@ struct qdisc_util pfifo_head_drop_qdisc_
  
  struct qdisc_util pfifo_fast_qdisc_util = {
  	.id = "pfifo_fast",

package/network/utils/iproute2/patches/140-keep_libmnl_optional.patch

 --- a/configure
 +++ b/configure
-@@ -257,7 +257,7 @@ check_selinux()
+@@ -367,7 +367,7 @@ check_selinux()
  
  check_mnl()
  {

package/network/utils/iproute2/patches/145-keep_libelf_optional.patch

 --- a/configure
 +++ b/configure
-@@ -230,7 +230,7 @@ EOF
+@@ -235,7 +235,7 @@ EOF
  
  check_elf()
  {

package/network/utils/iproute2/patches/150-keep_libcap_optional.patch

 --- a/configure
 +++ b/configure
-@@ -315,7 +315,7 @@ EOF
+@@ -425,7 +425,7 @@ EOF
  
  check_cap()
  {

package/network/utils/iproute2/patches/160-libnetlink-pic.patch

@@ -7,5 +7,5 @@
 -CFLAGS += -fPIC
 +CFLAGS += $(FPIC)
  
- UTILOBJ = utils.o rt_names.o ll_map.o ll_types.o ll_proto.o ll_addr.o \
- 	inet_proto.o namespace.o json_writer.o json_print.o \
+ UTILOBJ = utils.o utils_math.o rt_names.o ll_map.o ll_types.o ll_proto.o ll_addr.o \
+ 	inet_proto.o namespace.o json_writer.o json_print.o json_print_math.o \

package/network/utils/iproute2/patches/170-ip_tiny.patch

@@ -25,7 +25,7 @@
  		sed -n '/'$$s'[^ ]* =/{s:.* \([^ ]*'$$s'[^ ]*\) .*:extern char \1[] __attribute__((weak)); if (!strcmp(sym, "\1")) return \1;:;p}' $$files ; \
 --- a/ip/ip.c
 +++ b/ip/ip.c
-@@ -48,10 +48,16 @@ static void usage(void)
+@@ -64,10 +64,16 @@ static void usage(void)
  	fprintf(stderr,
  		"Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n"
  		"       ip [ -force ] -batch filename\n"
@@ -42,7 +42,7 @@
  		"       OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |\n"
  		"                    -h[uman-readable] | -iec | -j[son] | -p[retty] |\n"
  		"                    -f[amily] { inet | inet6 | mpls | bridge | link } |\n"
-@@ -74,36 +80,50 @@ static const struct cmd {
+@@ -90,36 +96,50 @@ static const struct cmd {
  	int (*func)(int argc, char **argv);
  } cmds[] = {
  	{ "address",	do_ipaddr },
@@ -103,6 +103,6 @@
 +  CFLAGS += -DIPROUTE2_TINY
 +endif
 +
- UTILOBJ = utils.o rt_names.o ll_map.o ll_types.o ll_proto.o ll_addr.o \
- 	inet_proto.o namespace.o json_writer.o json_print.o \
- 	names.o color.o bpf.o exec.o fs.o cg_map.o
+ UTILOBJ = utils.o utils_math.o rt_names.o ll_map.o ll_types.o ll_proto.o ll_addr.o \
+ 	inet_proto.o namespace.o json_writer.o json_print.o json_print_math.o \
+ 	names.o color.o bpf_legacy.o bpf_glue.o exec.o fs.o cg_map.o

package/network/utils/iproute2/patches/200-drop_libbsd_dependency.patch

 --- a/configure
 +++ b/configure
-@@ -301,14 +301,8 @@ EOF
+@@ -411,14 +411,8 @@ EOF
      if $CC -I$INCLUDE -o $TMPDIR/strtest $TMPDIR/strtest.c >/dev/null 2>&1; then
  	echo "no"
      else

package/network/utils/iproute2/patches/300-selinux-configurable.patch

 --- a/configure
 +++ b/configure
-@@ -244,7 +244,7 @@ check_elf()
+@@ -354,7 +354,7 @@ check_libbpf()
  check_selinux()
  # SELinux is a compile time option in the ss utility
  {