364 static int middle_len(const struct ceph_msg *msg)  in middle_len()  function
366 	return le32_to_cpu(msg->hdr.middle_len);  in middle_len()
412 static int __tail_onwire_len(int front_len, int middle_len, int data_len,  in __tail_onwire_len()  argument
416 	       middle_len < 0 || middle_len > CEPH_MSG_MAX_MIDDLE_LEN ||  in __tail_onwire_len()
419 	if (!front_len && !middle_len && !data_len)  in __tail_onwire_len()
423 		return front_len + middle_len + data_len +  in __tail_onwire_len()
426 	return padded_len(front_len) + padded_len(middle_len) +  in __tail_onwire_len()
432 	return __tail_onwire_len(front_len(msg), middle_len(msg),  in tail_onwire_len()
605 			int front_len, int middle_len, int data_len,  in fill_header()  argument
614 	hdr->middle_len = cpu_to_le32(middle_len);  in fill_header()
665 		WARN_ON(!middle_len(con->in_msg) && !data_len(con->in_msg));  in verify_epilogue_crcs()
669 	if (middle_len(con->in_msg))  in verify_epilogue_crcs()
672 					    middle_len(con->in_msg));  in verify_epilogue_crcs()
1017 	if (!front_len(msg) && !middle_len(msg) && !data_len(msg))  in setup_message_sgs()
1024 	if (middle_len(msg))  in setup_message_sgs()
1026 				      middle_len(msg));  in setup_message_sgs()
1046 	if (middle_len(msg))  in setup_message_sgs()
1047 		init_sgs(&cur_sg, msg->middle->vec.iov_base, middle_len(msg),  in setup_message_sgs()
1148 		dpos = padded_len(front_len(con->in_msg) + padded_len(middle_len(con->in_msg)));  in decrypt_tail()
1617 	if (!front_len(msg) && !middle_len(msg)) {  in prepare_message_plain()
1642 	if (middle_len(msg)) {  in prepare_message_plain()
1644 			crc32c(-1, msg->middle->vec.iov_base, middle_len(msg));  in prepare_message_plain()
1645 		add_out_kvec(con, msg->middle->vec.iov_base, middle_len(msg));  in prepare_message_plain()
1735 		middle_len(con->out_msg),  in prepare_message()
2051 	if (!front_len(msg) && !middle_len(msg)) {  in prepare_read_tail_plain()
2061 	if (middle_len(msg)) {  in prepare_read_tail_plain()
2062 		add_in_kvec(con, msg->middle->vec.iov_base, middle_len(msg));  in prepare_read_tail_plain()
2063 		WARN_ON(msg->middle->vec.iov_len != middle_len(msg));  in prepare_read_tail_plain()
2944 	if (middle_len(msg)) {  in __handle_control()
2945 		WARN_ON(middle_len(msg) > msg->middle->alloc_len);  in __handle_control()
2946 		msg->middle->vec.iov_len = middle_len(msg);  in __handle_control()
2951 	if (!front_len(msg) && !middle_len(msg) && !data_len(msg))  in __handle_control()
3482 	WARN_ON(!resid || resid > middle_len(con->out_msg));  in prepare_zero_middle()
3483 	sent = middle_len(con->out_msg) - resid;  in prepare_zero_middle()
3515 	boundary = front_len(con->out_msg) + middle_len(con->out_msg);  in revoke_at_queue_data()
3522 		if (middle_len(con->out_msg))  in revoke_at_queue_data()
3523 			prepare_zero_middle(con, middle_len(con->out_msg));  in revoke_at_queue_data()
3530 	boundary = middle_len(con->out_msg);  in revoke_at_queue_data()
3535 		if (middle_len(con->out_msg))  in revoke_at_queue_data()
3536 			prepare_zero_middle(con, middle_len(con->out_msg));  in revoke_at_queue_data()
3583 	if (!front_len(con->out_msg) && !middle_len(con->out_msg) &&  in revoke_at_finish_message()
3591 	boundary = front_len(con->out_msg) + middle_len(con->out_msg) +  in revoke_at_finish_message()
3599 		if (middle_len(con->out_msg))  in revoke_at_finish_message()
3600 			prepare_zero_middle(con, middle_len(con->out_msg));  in revoke_at_finish_message()
3607 	boundary = middle_len(con->out_msg) + CEPH_EPILOGUE_PLAIN_LEN;  in revoke_at_finish_message()
3612 		if (middle_len(con->out_msg))  in revoke_at_finish_message()
3613 			prepare_zero_middle(con, middle_len(con->out_msg));  in revoke_at_finish_message()