dropwatch: Use header files from sysroot instead of build host

it does not match with our real head file form kernel.(net_dropmon.h)
net_dropmon.h in dropwatch local src/net_dropmon.h.
linux kernel also have it in include/uapi/linux/net_dropmon.h

for example,our kernel is linux5.10:
diff tmp/work/cortexa57-poky-linux/dropwatch/1.5.4+git-r0/recipe-sysroot/usr/
include/linux/net_dropmon.h tmp/work/cortexa57-poky-linux/dropwatch/1.5.4+git-r0/git/src/net_dropmon.h
1c1,3
<
95a94
>       NET_DM_ATTR_REASON,                     /* string */

it will cause mismatch when we use dropwatch in older kernel version(v5.10),
will cause dropwatch and kernel drop_monitor module mismatch with netlink talk.
we should build it with header from sysroot which comes from matching
kernel.

Signed-off-by: chenheyun <chen_heyun@163.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 31 insertions, 1 deletions

diff --git a/meta-networking/recipes-support/dropwatch/dropwatch/0001-fix-bug-build-with-sysroot-head-file-instead-of-loca.patch b/meta-networking/recipes-support/dropwatch/dropwatch/0001-fix-bug-build-with-sysroot-head-file-instead-of-loca.patch
new file mode 100755
index 000000000..33b72e05f
--- /dev/null
+++ b/meta-networking/recipes-support/dropwatch/dropwatch/0001-fix-bug-build-with-sysroot-head-file-instead-of-loca.patch
@@ -0,0 +1,28 @@
+From 4872c52f55f9cb089e6681c3f1926663145b52ae Mon Sep 17 00:00:00 2001
+From: chenheyun <chen_heyun@163.com>
+Date: Sun, 18 Feb 2024 05:08:25 -0800
+Subject: [PATCH] fix bug: build with sysroot head file instead of local head
+ file:net_dropmon.h
+
+Signed-off-by: chenheyun <chen_heyun@163.com>
+---
+ src/main.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/main.c b/src/main.c
+index e4746d9..81dc4da 100644
+--- a/src/main.c
++++ b/src/main.c
+@@ -26,8 +26,8 @@
+ #include <netlink/netlink.h>
+ #include <netlink/genl/genl.h>
+ #include <netlink/genl/ctrl.h>
++#include <net_dropmon.h>
+ 
+-#include "net_dropmon.h"
+ #include "lookup.h"
+ 
+ /*
+-- 
+2.25.1
+
diff --git a/meta-networking/recipes-support/dropwatch/dropwatch_1.5.4.bb b/meta-networking/recipes-support/dropwatch/dropwatch_1.5.4.bb
index e3dbac4a2..baa9398a1 100644
--- a/meta-networking/recipes-support/dropwatch/dropwatch_1.5.4.bb
+++ b/meta-networking/recipes-support/dropwatch/dropwatch_1.5.4.bb
@@ -8,7 +8,9 @@ SECTION = "net/misc"
 LICENSE = "GPL-2.0-or-later"
 LIC_FILES_CHKSUM = "file://COPYING;md5=eb723b61539feef013de476e68b5c50a"
 
-SRC_URI = "git://github.com/nhorman/dropwatch.git;protocol=https;nobranch=1"
+SRC_URI = "git://github.com/nhorman/dropwatch.git;protocol=https;nobranch=1 \
+                  file://0001-fix-bug-build-with-sysroot-head-file-instead-of-loca.patch \
+"
 SRCREV = "1e7e487a019a7c02f1f429c4d3a4647fa3787a13"
 
 S = "${WORKDIR}/git"