xdp-tools: fix musl build issues

Add patches to fix build failures on musl-based toolchains:

0002-xdpsock-fix-struct-ethhdr-redefinition-on-musl.patch:
xdpsock.c included <net/ethernet.h> and <netinet/ether.h> alongside
<linux/if_ether.h>, triggering a struct ethhdr redefinition on musl.
Replace BSD-style ether_header/ether_addr with struct ethhdr and drop
the conflicting includes.

0003-build-use-gnu2x-to-avoid-stdbool.h-dependency.patch:
Switch CFLAGS and BPF_CFLAGS from -std=gnu11 to -std=gnu2x. In C23,
bool is a native keyword, fixing "stdbool.h: No such file or directory"
errors with a clang lacking its resource directory (e.g. llvm-bpf built
with LLVM_INSTALL_TOOLCHAIN_ONLY=ON on musl targets).

Link: https://github.com/openwrt/openwrt/pull/22983
(cherry picked from commit d16758d2d34a1750e19e0e8ba623583b7414c291)
Link: https://github.com/openwrt/openwrt/pull/23015
Signed-off-by: Nick Hainke <vincent@systemli.org>

4 files changed, 412 insertions, 4 deletions

diff --git a/package/network/utils/xdp-tools/Makefile b/package/network/utils/xdp-tools/Makefile
index fb9ea95458..67236ea317 100644
--- a/package/network/utils/xdp-tools/Makefile
+++ b/package/network/utils/xdp-tools/Makefile
@@ -1,7 +1,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=xdp-tools
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_VERSION:=1.6.3
 PKG_HASH:=78da363ff7dcf1a586f47800f16d644022bd33f3844864061a44616fce854fd8
 
diff --git a/package/network/utils/xdp-tools/patches/0001-params-avoid-linux-if_ether.h-in-header-to-fix-musl-.patch b/package/network/utils/xdp-tools/patches/0001-params-avoid-linux-if_ether.h-in-header-to-fix-musl-.patch
index 1fee5e974c..f19b348a3b 100644
--- a/package/network/utils/xdp-tools/patches/0001-params-avoid-linux-if_ether.h-in-header-to-fix-musl-.patch
+++ b/package/network/utils/xdp-tools/patches/0001-params-avoid-linux-if_ether.h-in-header-to-fix-musl-.patch
@@ -1,5 +1,8 @@
+From f01fbee19b56b41f1e36f15a0d9334d2dc4da3ca Mon Sep 17 00:00:00 2001
 From: Nick Hainke <vincent@systemli.org>
-Subject: [PATCH] params: avoid linux/if_ether.h in header to fix musl build
+Date: Sun, 19 Apr 2026 18:29:45 +0200
+Subject: [PATCH 1/3] params: avoid linux/if_ether.h in header to fix musl
+ build
 
 On musl-based toolchains (e.g. MIPS), including <linux/if_ether.h>
 from params.h triggers a chain through net/ethernet.h ->
@@ -12,8 +15,8 @@ to avoid the conflict.
 
 Signed-off-by: Nick Hainke <vincent@systemli.org>
 ---
- lib/util/params.h | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
+ lib/util/params.h | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
 
 --- a/lib/util/params.h
 +++ b/lib/util/params.h
diff --git a/package/network/utils/xdp-tools/patches/0002-xdpsock-fix-struct-ethhdr-redefinition-on-musl.patch b/package/network/utils/xdp-tools/patches/0002-xdpsock-fix-struct-ethhdr-redefinition-on-musl.patch
new file mode 100644
index 0000000000..486fe64083
--- /dev/null
+++ b/package/network/utils/xdp-tools/patches/0002-xdpsock-fix-struct-ethhdr-redefinition-on-musl.patch
@@ -0,0 +1,66 @@
+From ab5415551c7c7e2e34327446c65faf924e362ad7 Mon Sep 17 00:00:00 2001
+From: Nick Hainke <vincent@systemli.org>
+Date: Sun, 19 Apr 2026 09:46:11 +0200
+Subject: [PATCH 2/3] xdpsock: fix struct ethhdr redefinition on musl
+
+On musl, including <net/ethernet.h> or <netinet/ether.h> after
+<linux/if_ether.h> triggers a redefinition of 'struct ethhdr' via
+the netinet/if_ether.h chain.
+
+Fix xdpsock.c by replacing the BSD-style struct ether_header/ether_addr
+in swap_mac_addresses() with struct ethhdr (already provided by the
+existing <linux/if_ether.h> include) and dropping the conflicting
+<net/ethernet.h> and <netinet/ether.h> includes.
+
+Fix xdpsock.h by replacing <netinet/ether.h> with <linux/if_ether.h>,
+which provides ETH_ALEN and struct ethhdr without the redefinition.
+
+Signed-off-by: Nick Hainke <vincent@systemli.org>
+---
+ lib/util/xdpsock.c | 16 ++++++----------
+ lib/util/xdpsock.h |  2 +-
+ 2 files changed, 7 insertions(+), 11 deletions(-)
+
+--- a/lib/util/xdpsock.c
++++ b/lib/util/xdpsock.c
+@@ -15,8 +15,6 @@
+ #include <linux/udp.h>
+ #include <locale.h>
+ #include <arpa/inet.h>
+-#include <net/ethernet.h>
+-#include <netinet/ether.h>
+ #include <net/if.h>
+ #include <poll.h>
+ #include <pthread.h>
+@@ -648,14 +646,12 @@ void xsk_ctx__destroy(struct xsk_ctx *ct
+ 
+ static void swap_mac_addresses(void *data)
+ {
+-	struct ether_header *eth = (struct ether_header *)data;
+-	struct ether_addr *src_addr = (struct ether_addr *)&eth->ether_shost;
+-	struct ether_addr *dst_addr = (struct ether_addr *)&eth->ether_dhost;
+-	struct ether_addr tmp;
+-
+-	tmp = *src_addr;
+-	*src_addr = *dst_addr;
+-	*dst_addr = tmp;
++	struct ethhdr *eth = (struct ethhdr *)data;
++	unsigned char tmp[ETH_ALEN];
++
++	memcpy(tmp, eth->h_source, ETH_ALEN);
++	memcpy(eth->h_source, eth->h_dest, ETH_ALEN);
++	memcpy(eth->h_dest, tmp, ETH_ALEN);
+ }
+ 
+ static void hex_dump(void *pkt, size_t length, __u64 addr)
+--- a/lib/util/xdpsock.h
++++ b/lib/util/xdpsock.h
+@@ -8,7 +8,7 @@
+ 
+ #include <linux/if_xdp.h>
+ #include <stdbool.h>
+-#include <netinet/ether.h>
++#include <linux/if_ether.h>
+ #include <time.h>
+ #include <sched.h>
+ #include <xdp/libxdp.h>
diff --git a/package/network/utils/xdp-tools/patches/0003-build-use-gnu2x-to-avoid-stdbool.h-dependency.patch b/package/network/utils/xdp-tools/patches/0003-build-use-gnu2x-to-avoid-stdbool.h-dependency.patch
new file mode 100644
index 0000000000..b07149832f
--- /dev/null
+++ b/package/network/utils/xdp-tools/patches/0003-build-use-gnu2x-to-avoid-stdbool.h-dependency.patch
@@ -0,0 +1,339 @@
+From bdb036b8015f5f55092cda9b140d79673007f4ca Mon Sep 17 00:00:00 2001
+From: Nick Hainke <vincent@systemli.org>
+Date: Sat, 18 Apr 2026 18:44:34 +0200
+Subject: [PATCH 3/3] build: use gnu2x to avoid stdbool.h dependency
+
+Bump the C standard from gnu11 to gnu2x for both CFLAGS and BPF_CFLAGS.
+In C23 (gnu2x), bool is a native keyword, so stdbool.h is no longer needed.
+This fixes "stdbool.h: No such file or directory" errors when building
+BPF programs with a clang that lacks its resource directory (e.g.
+OpenWrt's llvm-bpf built with LLVM_INSTALL_TOOLCHAIN_ONLY=ON on musl
+targets), affecting xdpdump_bpf.c, xdpdump_xdp.c and
+xdp_sample_common.bpf.h.
+
+Signed-off-by: Nick Hainke <vincent@systemli.org>
+---
+ headers/linux/err.h                         | 1 -
+ headers/linux/hashtable.h                   | 1 -
+ headers/linux/netfilter.h                   | 1 -
+ headers/xdp/xdp_sample_common.bpf.h         | 1 -
+ lib/defines.mk                              | 4 ++--
+ lib/libxdp/tests/test_dispatcher_versions.c | 1 -
+ lib/libxdp/tests/test_link_detach.c         | 1 -
+ lib/libxdp/tests/test_xdp_devbound.c        | 1 -
+ lib/libxdp/tests/test_xdp_frags.c           | 1 -
+ lib/libxdp/tests/test_xsk_refcnt.c          | 1 -
+ lib/testing/test-tool.c                     | 1 -
+ lib/util/params.c                           | 1 -
+ lib/util/params.h                           | 1 -
+ lib/util/xdp_sample.c                       | 1 -
+ lib/util/xdpsock.c                          | 1 -
+ lib/util/xdpsock.h                          | 1 -
+ lib/util/xpcapng.c                          | 1 -
+ xdp-bench/xdp_basic.c                       | 1 -
+ xdp-bench/xdp_redirect_basic.c              | 1 -
+ xdp-bench/xdp_redirect_cpumap.c             | 1 -
+ xdp-bench/xdp_redirect_devmap.c             | 1 -
+ xdp-bench/xdp_socket.c                      | 1 -
+ xdp-dump/xdpdump.c                          | 1 -
+ xdp-dump/xdpdump_bpf.c                      | 1 -
+ xdp-dump/xdpdump_xdp.c                      | 1 -
+ xdp-filter/xdp-filter.c                     | 1 -
+ xdp-loader/xdp-loader.c                     | 1 -
+ xdp-monitor/xdp-monitor.c                   | 1 -
+ xdp-trafficgen/xdp-trafficgen.c             | 1 -
+ 29 files changed, 2 insertions(+), 30 deletions(-)
+
+--- a/headers/linux/err.h
++++ b/headers/linux/err.h
+@@ -3,7 +3,6 @@
+ #ifndef __LINUX_ERR_H
+ #define __LINUX_ERR_H
+ 
+-#include <stdbool.h>
+ #include <linux/types.h>
+ #include <asm/errno.h>
+ 
+--- a/headers/linux/hashtable.h
++++ b/headers/linux/hashtable.h
+@@ -9,7 +9,6 @@
+ 
+ #include <math.h>
+ #include <stdint.h>
+-#include <stdbool.h>
+ #include <linux/hlist.h>
+ #include <linux/types.h>
+ #include <linux/kernel.h>
+--- a/headers/linux/netfilter.h
++++ b/headers/linux/netfilter.h
+@@ -1,7 +1,6 @@
+ #ifndef _LINUX_NETFILTER_H
+ #define _LINUX_NETFILTER_H
+ 
+-#include <stdbool.h>
+ #include <linux/types.h>
+ #include <bpf/bpf_helpers.h>
+ #include <xdp/parsing_helpers.h>
+--- a/headers/xdp/xdp_sample_common.bpf.h
++++ b/headers/xdp/xdp_sample_common.bpf.h
+@@ -6,7 +6,6 @@
+ #include "xdp_sample.bpf.h"
+ 
+ #include <bpf/vmlinux.h>
+-#include <stdbool.h>
+ #include <bpf/bpf_tracing.h>
+ #include <bpf/bpf_core_read.h>
+ #include <bpf/bpf_helpers.h>
+--- a/lib/defines.mk
++++ b/lib/defines.mk
+@@ -42,8 +42,8 @@ endif
+ 
+ DEFINES += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
+ 
+-CFLAGS += -std=gnu11 -Wextra -Werror $(DEFINES) $(ARCH_INCLUDES)
+-BPF_CFLAGS += $(DEFINES) $(filter -ffile-prefix-map=%,$(CFLAGS)) $(filter -I%,$(CFLAGS)) $(ARCH_INCLUDES)
++CFLAGS += -std=gnu2x -Wextra -Werror $(DEFINES) $(ARCH_INCLUDES)
++BPF_CFLAGS += -std=gnu2x $(DEFINES) $(filter -ffile-prefix-map=%,$(CFLAGS)) $(filter -I%,$(CFLAGS)) $(ARCH_INCLUDES)
+ 
+ CONFIGMK := $(LIB_DIR)/../config.mk
+ LIBMK := Makefile $(CONFIGMK) $(LIB_DIR)/defines.mk $(LIB_DIR)/common.mk $(LIB_DIR)/../version.mk
+--- a/lib/libxdp/tests/test_dispatcher_versions.c
++++ b/lib/libxdp/tests/test_dispatcher_versions.c
+@@ -6,7 +6,6 @@
+ #include <linux/err.h>
+ #include <net/if.h>
+ #include <pthread.h>
+-#include <stdbool.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <sys/resource.h>
+--- a/lib/libxdp/tests/test_link_detach.c
++++ b/lib/libxdp/tests/test_link_detach.c
+@@ -6,7 +6,6 @@
+ #include <linux/err.h>
+ #include <net/if.h>
+ #include <pthread.h>
+-#include <stdbool.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <sys/resource.h>
+--- a/lib/libxdp/tests/test_xdp_devbound.c
++++ b/lib/libxdp/tests/test_xdp_devbound.c
+@@ -6,7 +6,6 @@
+ #include <linux/err.h>
+ #include <net/if.h>
+ #include <pthread.h>
+-#include <stdbool.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <sys/resource.h>
+--- a/lib/libxdp/tests/test_xdp_frags.c
++++ b/lib/libxdp/tests/test_xdp_frags.c
+@@ -6,7 +6,6 @@
+ #include <linux/err.h>
+ #include <net/if.h>
+ #include <pthread.h>
+-#include <stdbool.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <sys/resource.h>
+--- a/lib/libxdp/tests/test_xsk_refcnt.c
++++ b/lib/libxdp/tests/test_xsk_refcnt.c
+@@ -4,7 +4,6 @@
+ #include <linux/err.h>
+ #include <net/if.h>
+ #include <pthread.h>
+-#include <stdbool.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <sys/resource.h>
+--- a/lib/testing/test-tool.c
++++ b/lib/testing/test-tool.c
+@@ -2,7 +2,6 @@
+ #include <stdlib.h>
+ #include <string.h>
+ #include <errno.h>
+-#include <stdbool.h>
+ #include <unistd.h>
+ #include <fcntl.h>
+ 
+--- a/lib/util/params.c
++++ b/lib/util/params.c
+@@ -5,7 +5,6 @@
+ #include <stdlib.h>
+ #include <stdio.h>
+ #include <string.h>
+-#include <stdbool.h>
+ #include <getopt.h>
+ #include <errno.h>
+ 
+--- a/lib/util/params.h
++++ b/lib/util/params.h
+@@ -4,7 +4,6 @@
+ #define __PARAMS_H
+ 
+ #include <getopt.h>
+-#include <stdbool.h>
+ #include <stdlib.h>
+ #include <linux/in.h>
+ #include <linux/in6.h>
+--- a/lib/util/xdp_sample.c
++++ b/lib/util/xdp_sample.c
+@@ -15,7 +15,6 @@
+ #include <string.h>
+ #include <unistd.h>
+ #include <bpf/bpf.h>
+-#include <stdbool.h>
+ #include <inttypes.h>
+ #include <sys/mman.h>
+ #include <arpa/inet.h>
+--- a/lib/util/xdpsock.c
++++ b/lib/util/xdpsock.c
+@@ -19,7 +19,6 @@
+ #include <poll.h>
+ #include <pthread.h>
+ #include <signal.h>
+-#include <stdbool.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
+--- a/lib/util/xdpsock.h
++++ b/lib/util/xdpsock.h
+@@ -7,7 +7,6 @@
+ #define XDPSOCK_H_
+ 
+ #include <linux/if_xdp.h>
+-#include <stdbool.h>
+ #include <linux/if_ether.h>
+ #include <time.h>
+ #include <sched.h>
+--- a/lib/util/xpcapng.c
++++ b/lib/util/xpcapng.c
+@@ -13,7 +13,6 @@
+ #include <errno.h>
+ #include <fcntl.h>
+ #include <inttypes.h>
+-#include <stdbool.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
+--- a/xdp-bench/xdp_basic.c
++++ b/xdp-bench/xdp_basic.c
+@@ -12,7 +12,6 @@
+ #include <string.h>
+ #include <unistd.h>
+ #include <bpf/bpf.h>
+-#include <stdbool.h>
+ #include <linux/bpf.h>
+ #include <bpf/libbpf.h>
+ #include <sys/resource.h>
+--- a/xdp-bench/xdp_redirect_basic.c
++++ b/xdp-bench/xdp_redirect_basic.c
+@@ -12,7 +12,6 @@
+ #include <string.h>
+ #include <unistd.h>
+ #include <bpf/bpf.h>
+-#include <stdbool.h>
+ #include <linux/bpf.h>
+ #include <bpf/libbpf.h>
+ #include <sys/resource.h>
+--- a/xdp-bench/xdp_redirect_cpumap.c
++++ b/xdp-bench/xdp_redirect_cpumap.c
+@@ -13,7 +13,6 @@
+ #include <string.h>
+ #include <unistd.h>
+ #include <bpf/bpf.h>
+-#include <stdbool.h>
+ #include <arpa/inet.h>
+ #include <bpf/libbpf.h>
+ #include <sys/sysinfo.h>
+--- a/xdp-bench/xdp_redirect_devmap.c
++++ b/xdp-bench/xdp_redirect_devmap.c
+@@ -12,7 +12,6 @@
+ #include <string.h>
+ #include <unistd.h>
+ #include <bpf/bpf.h>
+-#include <stdbool.h>
+ #include <linux/bpf.h>
+ #include <bpf/libbpf.h>
+ #include <xdp/libxdp.h>
+--- a/xdp-bench/xdp_socket.c
++++ b/xdp-bench/xdp_socket.c
+@@ -2,7 +2,6 @@
+ #include <string.h>
+ #include <unistd.h>
+ #include <bpf/bpf.h>
+-#include <stdbool.h>
+ #include <linux/bpf.h>
+ #include <pthread.h>
+ #include <bpf/libbpf.h>
+--- a/xdp-dump/xdpdump.c
++++ b/xdp-dump/xdpdump.c
+@@ -9,7 +9,6 @@
+ #include <inttypes.h>
+ #include <limits.h>
+ #include <signal.h>
+-#include <stdbool.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
+--- a/xdp-dump/xdpdump_bpf.c
++++ b/xdp-dump/xdpdump_bpf.c
+@@ -3,7 +3,6 @@
+ /*****************************************************************************
+  * Include files
+  *****************************************************************************/
+-#include <stdbool.h>
+ #include <linux/bpf.h>
+ #include <bpf/bpf_helpers.h>
+ #include <bpf/bpf_trace_helpers.h>
+--- a/xdp-dump/xdpdump_xdp.c
++++ b/xdp-dump/xdpdump_xdp.c
+@@ -3,7 +3,6 @@
+ /*****************************************************************************
+  * Include files
+  *****************************************************************************/
+-#include <stdbool.h>
+ #include <linux/bpf.h>
+ #include <bpf/bpf_helpers.h>
+ #include <bpf/bpf_trace_helpers.h>
+--- a/xdp-filter/xdp-filter.c
++++ b/xdp-filter/xdp-filter.c
+@@ -4,7 +4,6 @@
+ #include <stdlib.h>
+ #include <string.h>
+ #include <errno.h>
+-#include <stdbool.h>
+ #include <unistd.h>
+ #include <fcntl.h>
+ #include <inttypes.h>
+--- a/xdp-loader/xdp-loader.c
++++ b/xdp-loader/xdp-loader.c
+@@ -4,7 +4,6 @@
+ #include <stdlib.h>
+ #include <string.h>
+ #include <errno.h>
+-#include <stdbool.h>
+ #include <unistd.h>
+ #include <fcntl.h>
+ 
+--- a/xdp-monitor/xdp-monitor.c
++++ b/xdp-monitor/xdp-monitor.c
+@@ -23,7 +23,6 @@ static const char *__doc_err_only__=
+ #include <string.h>
+ #include <unistd.h>
+ #include <bpf/bpf.h>
+-#include <stdbool.h>
+ #include <bpf/libbpf.h>
+ #include <sys/resource.h>
+ 
+--- a/xdp-trafficgen/xdp-trafficgen.c
++++ b/xdp-trafficgen/xdp-trafficgen.c
+@@ -6,7 +6,6 @@
+ #include <string.h>
+ #include <signal.h>
+ #include <errno.h>
+-#include <stdbool.h>
+ #include <unistd.h>
+ #include <fcntl.h>
+ #include <pthread.h>