ovs/lib/ofpbuf.c
/* Prefixes 'size' bytes to the head end of 'b', reallocating and copying its
 * data if necessary.  Returns a pointer to the first byte of the data's
 * location in the ofpbuf.  The new data is left uninitialized. */
Prefixes 'size' bytes to the head end of 'b', reallocating and copying its
data if necessary.  Returns a pointer to the first byte of the data's
location in the ofpbuf.  The new data is left uninitialized.
Prefixes ' size ' bytes to the head end of ' b ' reallocating and copying its data if necessary . Returns a pointer to the first byte of the data ' s location in the ofpbuf . The new data is left uninitialized .
void *
ofpbuf_push_uninit(struct ofpbuf *b, size_t size)
{
    ofpbuf_prealloc_headroom(b, size);
    b->data = (char*)b->data - size;
    b->size += size;
    return b->data;
}
void * ofpbuf_push_uninit ( struct ofpbuf * b , size_t size ) { ofpbuf_prealloc_headroom ( b , size ) ; b -> data = ( char * ) b -> data - size ; b -> size += size ; return b -> data ; }
Prefixes 'size' bytes to the head end of 'b', reallocating and copying its
 data if necessary.
Prefixes ' size ' bytes to the head end of ' b ' reallocating and copying its data if necessary .