332 		       unsigned int *size, struct mptcp_out_options *opts)  in mptcp_syn_options()  argument
341 		opts->suboptions = OPTION_MPTCP_MPC_SYN;  in mptcp_syn_options()
347 		opts->suboptions = OPTION_MPTCP_MPJ_SYN;  in mptcp_syn_options()
348 		opts->join_id = subflow->local_id;  in mptcp_syn_options()
349 		opts->token = subflow->remote_token;  in mptcp_syn_options()
350 		opts->nonce = subflow->local_nonce;  in mptcp_syn_options()
351 		opts->backup = subflow->request_bkup;  in mptcp_syn_options()
393 					 struct mptcp_out_options *opts)  in mptcp_established_options_mp()  argument
421 		opts->ext_copy.data_len = data_len;  in mptcp_established_options_mp()
422 		opts->suboptions = OPTION_MPTCP_MPC_ACK;  in mptcp_established_options_mp()
423 		opts->sndr_key = subflow->local_key;  in mptcp_established_options_mp()
424 		opts->rcvr_key = subflow->remote_key;  in mptcp_established_options_mp()
442 		opts->suboptions = OPTION_MPTCP_MPJ_ACK;  in mptcp_established_options_mp()
443 		memcpy(opts->hmac, subflow->hmac, MPTCPOPT_HMAC_LEN);  in mptcp_established_options_mp()
484 					  struct mptcp_out_options *opts)  in mptcp_established_options_dss()  argument
505 			opts->ext_copy = *mpext;  in mptcp_established_options_dss()
508 			mptcp_write_data_fin(subflow, skb, &opts->ext_copy);  in mptcp_established_options_dss()
515 	opts->ext_copy.use_ack = 0;  in mptcp_established_options_dss()
523 		opts->ext_copy.data_ack = READ_ONCE(msk->ack_seq);  in mptcp_established_options_dss()
524 		opts->ext_copy.ack64 = 1;  in mptcp_established_options_dss()
527 		opts->ext_copy.data_ack32 = (uint32_t)READ_ONCE(msk->ack_seq);  in mptcp_established_options_dss()
528 		opts->ext_copy.ack64 = 0;  in mptcp_established_options_dss()
530 	opts->ext_copy.use_ack = 1;  in mptcp_established_options_dss()
579 					       struct mptcp_out_options *opts)  in mptcp_established_options_add_addr()  argument
596 	opts->addr_id = saddr.id;  in mptcp_established_options_add_addr()
598 		opts->suboptions |= OPTION_MPTCP_ADD_ADDR;  in mptcp_established_options_add_addr()
599 		opts->addr = saddr.addr;  in mptcp_established_options_add_addr()
601 			opts->ahmac = add_addr_generate_hmac(msk->local_key,  in mptcp_established_options_add_addr()
603 							     opts->addr_id,  in mptcp_established_options_add_addr()
604 							     &opts->addr);  in mptcp_established_options_add_addr()
609 		opts->suboptions |= OPTION_MPTCP_ADD_ADDR6;  in mptcp_established_options_add_addr()
610 		opts->addr6 = saddr.addr6;  in mptcp_established_options_add_addr()
612 			opts->ahmac = add_addr6_generate_hmac(msk->local_key,  in mptcp_established_options_add_addr()
614 							      opts->addr_id,  in mptcp_established_options_add_addr()
615 							      &opts->addr6);  in mptcp_established_options_add_addr()
619 	pr_debug("addr_id=%d, ahmac=%llu, echo=%d", opts->addr_id, opts->ahmac, echo);  in mptcp_established_options_add_addr()
627 					      struct mptcp_out_options *opts)  in mptcp_established_options_rm_addr()  argument
641 	opts->suboptions |= OPTION_MPTCP_RM_ADDR;  in mptcp_established_options_rm_addr()
642 	opts->rm_id = rm_id;  in mptcp_established_options_rm_addr()
644 	pr_debug("rm_id=%d", opts->rm_id);  in mptcp_established_options_rm_addr()
651 			       struct mptcp_out_options *opts)  in mptcp_established_options()  argument
656 	opts->suboptions = 0;  in mptcp_established_options()
667 	if (mptcp_established_options_mp(sk, skb, &opt_size, remaining, opts))  in mptcp_established_options()
670 					       opts))  in mptcp_established_options()
681 	if (mptcp_established_options_add_addr(sk, &opt_size, remaining, opts)) {  in mptcp_established_options()
685 	} else if (mptcp_established_options_rm_addr(sk, &opt_size, remaining, opts)) {  in mptcp_established_options()
695 			  struct mptcp_out_options *opts)  in mptcp_synack_options()  argument
700 		opts->suboptions = OPTION_MPTCP_MPC_SYNACK;  in mptcp_synack_options()
701 		opts->sndr_key = subflow_req->local_key;  in mptcp_synack_options()
707 		opts->suboptions = OPTION_MPTCP_MPJ_SYNACK;  in mptcp_synack_options()
708 		opts->backup = subflow_req->backup;  in mptcp_synack_options()
709 		opts->join_id = subflow_req->local_id;  in mptcp_synack_options()
710 		opts->thmac = subflow_req->thmac;  in mptcp_synack_options()
711 		opts->nonce = subflow_req->local_nonce;  in mptcp_synack_options()
713 			 subflow_req, opts->backup, opts->join_id,  in mptcp_synack_options()
714 			 opts->thmac, opts->nonce);  in mptcp_synack_options()
978 void mptcp_write_options(__be32 *ptr, struct mptcp_out_options *opts)  in mptcp_write_options()  argument
981 	     OPTION_MPTCP_MPC_ACK) & opts->suboptions) {  in mptcp_write_options()
984 		if (OPTION_MPTCP_MPC_SYN & opts->suboptions)  in mptcp_write_options()
986 		else if (OPTION_MPTCP_MPC_SYNACK & opts->suboptions)  in mptcp_write_options()
988 		else if (opts->ext_copy.data_len)  in mptcp_write_options()
998 		    opts->suboptions))  in mptcp_write_options()
1001 		put_unaligned_be64(opts->sndr_key, ptr);  in mptcp_write_options()
1003 		if (!((OPTION_MPTCP_MPC_ACK) & opts->suboptions))  in mptcp_write_options()
1006 		put_unaligned_be64(opts->rcvr_key, ptr);  in mptcp_write_options()
1008 		if (!opts->ext_copy.data_len)  in mptcp_write_options()
1011 		put_unaligned_be32(opts->ext_copy.data_len << 16 |  in mptcp_write_options()
1017 	if (OPTION_MPTCP_ADD_ADDR & opts->suboptions) {  in mptcp_write_options()
1018 		if (opts->ahmac)  in mptcp_write_options()
1021 					      opts->addr_id);  in mptcp_write_options()
1026 					      opts->addr_id);  in mptcp_write_options()
1027 		memcpy((u8 *)ptr, (u8 *)&opts->addr.s_addr, 4);  in mptcp_write_options()
1029 		if (opts->ahmac) {  in mptcp_write_options()
1030 			put_unaligned_be64(opts->ahmac, ptr);  in mptcp_write_options()
1036 	if (OPTION_MPTCP_ADD_ADDR6 & opts->suboptions) {  in mptcp_write_options()
1037 		if (opts->ahmac)  in mptcp_write_options()
1040 					      opts->addr_id);  in mptcp_write_options()
1045 					      opts->addr_id);  in mptcp_write_options()
1046 		memcpy((u8 *)ptr, opts->addr6.s6_addr, 16);  in mptcp_write_options()
1048 		if (opts->ahmac) {  in mptcp_write_options()
1049 			put_unaligned_be64(opts->ahmac, ptr);  in mptcp_write_options()
1055 	if (OPTION_MPTCP_RM_ADDR & opts->suboptions) {  in mptcp_write_options()
1058 				      0, opts->rm_id);  in mptcp_write_options()
1061 	if (OPTION_MPTCP_MPJ_SYN & opts->suboptions) {  in mptcp_write_options()
1064 				      opts->backup, opts->join_id);  in mptcp_write_options()
1065 		put_unaligned_be32(opts->token, ptr);  in mptcp_write_options()
1067 		put_unaligned_be32(opts->nonce, ptr);  in mptcp_write_options()
1071 	if (OPTION_MPTCP_MPJ_SYNACK & opts->suboptions) {  in mptcp_write_options()
1074 				      opts->backup, opts->join_id);  in mptcp_write_options()
1075 		put_unaligned_be64(opts->thmac, ptr);  in mptcp_write_options()
1077 		put_unaligned_be32(opts->nonce, ptr);  in mptcp_write_options()
1081 	if (OPTION_MPTCP_MPJ_ACK & opts->suboptions) {  in mptcp_write_options()
1084 		memcpy(ptr, opts->hmac, MPTCPOPT_HMAC_LEN);  in mptcp_write_options()
1088 	if (opts->ext_copy.use_ack || opts->ext_copy.use_map) {  in mptcp_write_options()
1089 		struct mptcp_ext *mpext = &opts->ext_copy;  in mptcp_write_options()