X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=lib%2Fofpbuf.c;h=29698dcd83beefdedb2ba985f4305e63a9eaa4d9;hb=541bc79f73add327072470c9bc3febb4195cdb3c;hp=38874816c1f88679548bb1581b53547c42b5e7b1;hpb=63f2140a553dbbda9f19019a03abb088c7e7fa29;p=openvswitch

diff --git a/lib/ofpbuf.c b/lib/ofpbuf.c
index 38874816..29698dcd 100644
--- a/lib/ofpbuf.c
+++ b/lib/ofpbuf.c
@@ -129,7 +129,7 @@ ofpbuf_new_with_headroom(size_t size, size_t headroom)
 struct ofpbuf *
 ofpbuf_clone(const struct ofpbuf *buffer)
 {
-    return ofpbuf_clone_data(buffer->data, buffer->size);
+    return ofpbuf_clone_with_headroom(buffer, 0);
 }
 
 /* Creates and returns a new ofpbuf whose data are copied from 'buffer'.   The
@@ -137,8 +137,27 @@ ofpbuf_clone(const struct ofpbuf *buffer)
 struct ofpbuf *
 ofpbuf_clone_with_headroom(const struct ofpbuf *buffer, size_t headroom)
 {
-    return ofpbuf_clone_data_with_headroom(buffer->data, buffer->size,
-                                           headroom);
+    struct ofpbuf *new_buffer;
+    uintptr_t data_delta;
+
+    new_buffer = ofpbuf_clone_data_with_headroom(buffer->data, buffer->size,
+                                                 headroom);
+    data_delta = (char *) new_buffer->data - (char *) buffer->data;
+
+    if (buffer->l2) {
+        new_buffer->l2 = (char *) buffer->l2 + data_delta;
+    }
+    if (buffer->l3) {
+        new_buffer->l3 = (char *) buffer->l3 + data_delta;
+    }
+    if (buffer->l4) {
+        new_buffer->l4 = (char *) buffer->l4 + data_delta;
+    }
+    if (buffer->l7) {
+        new_buffer->l7 = (char *) buffer->l7 + data_delta;
+    }
+
+    return new_buffer;
 }
 
 /* Creates and returns a new ofpbuf that initially contains a copy of the