35 	struct cn_msg *cn; /* advances as cn_msg is appeneded */  member
66 	if (!block->cn)  in w1_reply_len()
68 	return (u8 *)block->cn - (u8 *)block->first_cn + block->cn->len;  in w1_reply_len()
97 		block->cn = NULL;  in w1_reply_make_space()
106 	if (!(block->request_cn.flags & W1_CN_BUNDLE) && block->cn)  in w1_netlink_check_send()
121 	if (block->cn && block->cn->ack == ack) {  in w1_netlink_setup_msg()
122 		block->msg = (struct w1_netlink_msg *)(block->cn->data + block->cn->len);  in w1_netlink_setup_msg()
125 		if (block->cn)  in w1_netlink_setup_msg()
126 			block->cn = (struct cn_msg *)(block->cn->data +  in w1_netlink_setup_msg()
127 				block->cn->len);  in w1_netlink_setup_msg()
129 			block->cn = block->first_cn;  in w1_netlink_setup_msg()
131 		memcpy(block->cn, &block->request_cn, sizeof(*block->cn));  in w1_netlink_setup_msg()
132 		block->cn->len = 0;  in w1_netlink_setup_msg()
133 		block->cn->ack = ack;  in w1_netlink_setup_msg()
134 		block->msg = (struct w1_netlink_msg *)block->cn->data;  in w1_netlink_setup_msg()
155 	block->cn->len += sizeof(*block->msg);  in w1_netlink_queue_cmd()
162 	block->cn->len += space;  in w1_netlink_queue_cmd()
178 	block->cn->len += sizeof(*req_msg);  in w1_netlink_queue_status()
184 		block->cn->len += sizeof(*cmd);  in w1_netlink_queue_status()
201 static void w1_netlink_send_error(struct cn_msg *cn, struct w1_netlink_msg *msg,  in w1_netlink_send_error()  argument
205 		struct cn_msg cn;  in w1_netlink_send_error()  member
208 	memcpy(&packet.cn, cn, sizeof(packet.cn));  in w1_netlink_send_error()
210 	packet.cn.len = sizeof(packet.msg);  in w1_netlink_send_error()
213 	cn_netlink_send(&packet.cn, portid, 0, GFP_KERNEL);  in w1_netlink_send_error()
226 		struct cn_msg cn;  in w1_netlink_send()  member
231 	packet.cn.id.idx = CN_W1_IDX;  in w1_netlink_send()
232 	packet.cn.id.val = CN_W1_VAL;  in w1_netlink_send()
234 	packet.cn.seq = dev->seq++;  in w1_netlink_send()
235 	packet.cn.len = sizeof(*msg);  in w1_netlink_send()
240 	cn_netlink_send(&packet.cn, 0, 0, GFP_KERNEL);  in w1_netlink_send()
260 	block->cn->len += sizeof(*data);  in w1_send_slave()
409 	struct cn_msg *cn;  in w1_process_command_root()  local
413 	cn = kmalloc(PAGE_SIZE, GFP_KERNEL);  in w1_process_command_root()
414 	if (!cn)  in w1_process_command_root()
417 	cn->id.idx = CN_W1_IDX;  in w1_process_command_root()
418 	cn->id.val = CN_W1_VAL;  in w1_process_command_root()
420 	cn->seq = req_cn->seq;  in w1_process_command_root()
421 	cn->ack = req_cn->seq + 1;  in w1_process_command_root()
422 	cn->len = sizeof(struct w1_netlink_msg);  in w1_process_command_root()
423 	msg = (struct w1_netlink_msg *)cn->data;  in w1_process_command_root()
432 		if (cn->len + sizeof(*id) > PAGE_SIZE - sizeof(struct cn_msg)) {  in w1_process_command_root()
433 			cn_netlink_send(cn, portid, 0, GFP_KERNEL);  in w1_process_command_root()
434 			cn->len = sizeof(struct w1_netlink_msg);  in w1_process_command_root()
441 		cn->len += sizeof(*id);  in w1_process_command_root()
444 	cn_netlink_send(cn, portid, 0, GFP_KERNEL);  in w1_process_command_root()
447 	kfree(cn);  in w1_process_command_root()
544 static void w1_cn_callback(struct cn_msg *cn, struct netlink_skb_parms *nsp)  in w1_cn_callback()  argument
546 	struct w1_netlink_msg *msg = (struct w1_netlink_msg *)(cn + 1);  in w1_cn_callback()
561 	if (cn->flags & ~(W1_CN_BUNDLE)) {  in w1_cn_callback()
562 		w1_netlink_send_error(cn, msg, nsp->portid, -EINVAL);  in w1_cn_callback()
569 	msg_len = cn->len;  in w1_cn_callback()
588 	msg = (struct w1_netlink_msg *)(cn + 1);  in w1_cn_callback()
591 		int reply_size = sizeof(*cn) + cn->len + slave_len;  in w1_cn_callback()
592 		if (cn->flags & W1_CN_BUNDLE) {  in w1_cn_callback()
607 			sizeof(struct w1_cb_block) + sizeof(*cn) + cn->len +  in w1_cn_callback()
618 			w1_netlink_send_error(cn, msg, nsp->portid, -ENOMEM);  in w1_cn_callback()
623 		memcpy(&block->request_cn, cn, sizeof(*cn) + cn->len);  in w1_cn_callback()
624 		node = (struct w1_cb_node *)(block->request_cn.data + cn->len);  in w1_cn_callback()
640 	msg_len = cn->len;  in w1_cn_callback()
653 			err = w1_process_command_root(cn, nsp->portid);  in w1_cn_callback()
674 				__func__, cn->id.idx, cn->id.val,  in w1_cn_callback()
691 			(size_t)((u8 *)msg - (u8 *)cn));  in w1_cn_callback()
707 			w1_netlink_send_error(cn, msg, nsp->portid, err);  in w1_cn_callback()
736 void w1_netlink_send(struct w1_master *dev, struct w1_netlink_msg *cn)  in w1_netlink_send()  argument