__path_find
struct ipoib_path *__path_find(struct net_device *dev, void *gid);
path = __path_find(dev, neigh->daddr + QPN_AND_OPTIONS_OFFSET);
path = __path_find(dev, daddr + 4);
path = __path_find(dev, phdr->hwaddr + 4);
path = __path_find(dev, daddr + 4);