1 files changed, 24 insertions, 0 deletions

diff --git a/overlays/preserve-dscp/kern_env.patch b/overlays/preserve-dscp/kern_env.patch
new file mode 100644
index 00000000..7fe57b19
--- /dev/null
+++ b/overlays/preserve-dscp/kern_env.patch
@@ -0,0 +1,24 @@
+diff --git a/preserve-dscp/preserve-dscp.c b/preserve-dscp/preserve-dscp.c
+index 8c66186..5916fc5 100644
+--- a/preserve-dscp/preserve-dscp.c
++++ b/preserve-dscp/preserve-dscp.c
+@@ -13,7 +13,7 @@
+ 
+ int main(int argc, char *argv[])
+ {
+-       const char *filename = "preserve_dscp_kern.o";
++       char *filename = 0;
+        char *ifname_pre, *ifname_post;
+        int ifindex_pre, ifindex_post;
+        struct bpf_map *map = NULL;
+@@ -26,6 +26,10 @@ int main(int argc, char *argv[])
+        DECLARE_LIBBPF_OPTS(bpf_tc_opts, attach_post);
+ 
+ 
++       if (!(filename = getenv("PRESERVE_DSCP_KERN")))
++         filename = "preserve_dscp_kern.o";
++
++
+        if (argc < 3) {
+                fprintf(stderr, "Usage: %s <if pre> <if post> [--unload]\n", argv[0]);
+                return 1;