/* Creates and returns a new ofpbuf whose data are copied from 'buffer'. The
* returned ofpbuf will additionally have 'headroom' bytes of headroom. */
struct ofpbuf *
-ofpbuf_clone_with_headroom(const struct ofpbuf *buffer, size_t headroom)
+ofpbuf_clone_with_headroom(const struct ofpbuf *b, size_t headroom)
{
struct ofpbuf *new_buffer;
- new_buffer = ofpbuf_clone_data_with_headroom(buffer->data,
- buffer->size,
- headroom);
- if (buffer->header) {
- ptrdiff_t data_delta = (char *) buffer->header - (char *) buffer->data;
+ new_buffer = ofpbuf_clone_data_with_headroom(b->data, b->size, headroom);
+ if (b->header) {
+ ptrdiff_t header_offset = (char *) b->header - (char *) b->data;
- new_buffer->header = (char *) new_buffer->data + data_delta;
+ new_buffer->header = (char *) new_buffer->data + header_offset;
}
- new_buffer->msg = buffer->msg;
+ new_buffer->msg = b->msg;
return new_buffer;
}
new_data = (char *) new_base + new_headroom;
if (b->data != new_data) {
if (b->header) {
- ptrdiff_t data_delta = (char *) b->header - (char *) b->data;
+ ptrdiff_t header_offset = (char *) b->header - (char *) b->data;
- b->header = (char *) new_data + data_delta;
+ b->header = (char *) new_data + header_offset;
}
if (b->msg) {
- ptrdiff_t data_delta = (char *) b->msg - (char *) b->data;
+ ptrdiff_t msg_offset = (char *) b->msg - (char *) b->data;
- b->msg = (char *) new_data + data_delta;
+ b->msg = (char *) new_data + msg_offset;
}
b->data = new_data;
}