3677 static int packet_mc_add(struct sock *sk, struct packet_mreq_max *mreq)  in packet_mc_add()  argument
3687 	dev = __dev_get_by_index(sock_net(sk), mreq->mr_ifindex);  in packet_mc_add()
3692 	if (mreq->mr_alen > dev->addr_len)  in packet_mc_add()
3702 		if (ml->ifindex == mreq->mr_ifindex &&  in packet_mc_add()
3703 		    ml->type == mreq->mr_type &&  in packet_mc_add()
3704 		    ml->alen == mreq->mr_alen &&  in packet_mc_add()
3705 		    memcmp(ml->addr, mreq->mr_address, ml->alen) == 0) {  in packet_mc_add()
3713 	i->type = mreq->mr_type;  in packet_mc_add()
3714 	i->ifindex = mreq->mr_ifindex;  in packet_mc_add()
3715 	i->alen = mreq->mr_alen;  in packet_mc_add()
3716 	memcpy(i->addr, mreq->mr_address, i->alen);  in packet_mc_add()
3733 static int packet_mc_drop(struct sock *sk, struct packet_mreq_max *mreq)  in packet_mc_drop()  argument
3740 		if (ml->ifindex == mreq->mr_ifindex &&  in packet_mc_drop()
3741 		    ml->type == mreq->mr_type &&  in packet_mc_drop()
3742 		    ml->alen == mreq->mr_alen &&  in packet_mc_drop()
3743 		    memcmp(ml->addr, mreq->mr_address, ml->alen) == 0) {  in packet_mc_drop()
3795 		struct packet_mreq_max mreq;  in packet_setsockopt()  local
3797 		memset(&mreq, 0, sizeof(mreq));  in packet_setsockopt()
3800 		if (len > sizeof(mreq))  in packet_setsockopt()
3801 			len = sizeof(mreq);  in packet_setsockopt()
3802 		if (copy_from_sockptr(&mreq, optval, len))  in packet_setsockopt()
3804 		if (len < (mreq.mr_alen + offsetof(struct packet_mreq, mr_address)))  in packet_setsockopt()
3807 			ret = packet_mc_add(sk, &mreq);  in packet_setsockopt()
3809 			ret = packet_mc_drop(sk, &mreq);  in packet_setsockopt()