334 		       unsigned int *size, struct mptcp_out_options *opts)  in mptcp_syn_options()  argument
343 		opts->suboptions = OPTION_MPTCP_MPC_SYN;  in mptcp_syn_options()
349 		opts->suboptions = OPTION_MPTCP_MPJ_SYN;  in mptcp_syn_options()
350 		opts->join_id = subflow->local_id;  in mptcp_syn_options()
351 		opts->token = subflow->remote_token;  in mptcp_syn_options()
352 		opts->nonce = subflow->local_nonce;  in mptcp_syn_options()
353 		opts->backup = subflow->request_bkup;  in mptcp_syn_options()
396 					 struct mptcp_out_options *opts)  in mptcp_established_options_mp()  argument
424 		opts->ext_copy.data_len = data_len;  in mptcp_established_options_mp()
425 		opts->suboptions = OPTION_MPTCP_MPC_ACK;  in mptcp_established_options_mp()
426 		opts->sndr_key = subflow->local_key;  in mptcp_established_options_mp()
427 		opts->rcvr_key = subflow->remote_key;  in mptcp_established_options_mp()
445 		opts->suboptions = OPTION_MPTCP_MPJ_ACK;  in mptcp_established_options_mp()
446 		memcpy(opts->hmac, subflow->hmac, MPTCPOPT_HMAC_LEN);  in mptcp_established_options_mp()
487 					  struct mptcp_out_options *opts)  in mptcp_established_options_dss()  argument
508 			opts->ext_copy = *mpext;  in mptcp_established_options_dss()
511 			mptcp_write_data_fin(subflow, skb, &opts->ext_copy);  in mptcp_established_options_dss()
518 	opts->ext_copy.use_ack = 0;  in mptcp_established_options_dss()
526 		opts->ext_copy.data_ack = READ_ONCE(msk->ack_seq);  in mptcp_established_options_dss()
527 		opts->ext_copy.ack64 = 1;  in mptcp_established_options_dss()
530 		opts->ext_copy.data_ack32 = (uint32_t)READ_ONCE(msk->ack_seq);  in mptcp_established_options_dss()
531 		opts->ext_copy.ack64 = 0;  in mptcp_established_options_dss()
533 	opts->ext_copy.use_ack = 1;  in mptcp_established_options_dss()
582 					       struct mptcp_out_options *opts)  in mptcp_established_options_add_addr()  argument
599 	opts->addr_id = saddr.id;  in mptcp_established_options_add_addr()
601 		opts->suboptions |= OPTION_MPTCP_ADD_ADDR;  in mptcp_established_options_add_addr()
602 		opts->addr = saddr.addr;  in mptcp_established_options_add_addr()
604 			opts->ahmac = add_addr_generate_hmac(msk->local_key,  in mptcp_established_options_add_addr()
606 							     opts->addr_id,  in mptcp_established_options_add_addr()
607 							     &opts->addr);  in mptcp_established_options_add_addr()
612 		opts->suboptions |= OPTION_MPTCP_ADD_ADDR6;  in mptcp_established_options_add_addr()
613 		opts->addr6 = saddr.addr6;  in mptcp_established_options_add_addr()
615 			opts->ahmac = add_addr6_generate_hmac(msk->local_key,  in mptcp_established_options_add_addr()
617 							      opts->addr_id,  in mptcp_established_options_add_addr()
618 							      &opts->addr6);  in mptcp_established_options_add_addr()
622 	pr_debug("addr_id=%d, ahmac=%llu, echo=%d", opts->addr_id, opts->ahmac, echo);  in mptcp_established_options_add_addr()
630 					      struct mptcp_out_options *opts)  in mptcp_established_options_rm_addr()  argument
644 	opts->suboptions |= OPTION_MPTCP_RM_ADDR;  in mptcp_established_options_rm_addr()
645 	opts->rm_id = rm_id;  in mptcp_established_options_rm_addr()
647 	pr_debug("rm_id=%d", opts->rm_id);  in mptcp_established_options_rm_addr()
654 			       struct mptcp_out_options *opts)  in mptcp_established_options()  argument
659 	opts->suboptions = 0;  in mptcp_established_options()
670 	if (mptcp_established_options_mp(sk, skb, &opt_size, remaining, opts))  in mptcp_established_options()
673 					       opts))  in mptcp_established_options()
684 	if (mptcp_established_options_add_addr(sk, &opt_size, remaining, opts)) {  in mptcp_established_options()
688 	} else if (mptcp_established_options_rm_addr(sk, &opt_size, remaining, opts)) {  in mptcp_established_options()
698 			  struct mptcp_out_options *opts)  in mptcp_synack_options()  argument
703 		opts->suboptions = OPTION_MPTCP_MPC_SYNACK;  in mptcp_synack_options()
704 		opts->sndr_key = subflow_req->local_key;  in mptcp_synack_options()
710 		opts->suboptions = OPTION_MPTCP_MPJ_SYNACK;  in mptcp_synack_options()
711 		opts->backup = subflow_req->backup;  in mptcp_synack_options()
712 		opts->join_id = subflow_req->local_id;  in mptcp_synack_options()
713 		opts->thmac = subflow_req->thmac;  in mptcp_synack_options()
714 		opts->nonce = subflow_req->local_nonce;  in mptcp_synack_options()
716 			 subflow_req, opts->backup, opts->join_id,  in mptcp_synack_options()
717 			 opts->thmac, opts->nonce);  in mptcp_synack_options()
981 void mptcp_write_options(__be32 *ptr, struct mptcp_out_options *opts)  in mptcp_write_options()  argument
984 	     OPTION_MPTCP_MPC_ACK) & opts->suboptions) {  in mptcp_write_options()
987 		if (OPTION_MPTCP_MPC_SYN & opts->suboptions)  in mptcp_write_options()
989 		else if (OPTION_MPTCP_MPC_SYNACK & opts->suboptions)  in mptcp_write_options()
991 		else if (opts->ext_copy.data_len)  in mptcp_write_options()
1001 		    opts->suboptions))  in mptcp_write_options()
1004 		put_unaligned_be64(opts->sndr_key, ptr);  in mptcp_write_options()
1006 		if (!((OPTION_MPTCP_MPC_ACK) & opts->suboptions))  in mptcp_write_options()
1009 		put_unaligned_be64(opts->rcvr_key, ptr);  in mptcp_write_options()
1011 		if (!opts->ext_copy.data_len)  in mptcp_write_options()
1014 		put_unaligned_be32(opts->ext_copy.data_len << 16 |  in mptcp_write_options()
1020 	if (OPTION_MPTCP_ADD_ADDR & opts->suboptions) {  in mptcp_write_options()
1021 		if (opts->ahmac)  in mptcp_write_options()
1024 					      opts->addr_id);  in mptcp_write_options()
1029 					      opts->addr_id);  in mptcp_write_options()
1030 		memcpy((u8 *)ptr, (u8 *)&opts->addr.s_addr, 4);  in mptcp_write_options()
1032 		if (opts->ahmac) {  in mptcp_write_options()
1033 			put_unaligned_be64(opts->ahmac, ptr);  in mptcp_write_options()
1039 	if (OPTION_MPTCP_ADD_ADDR6 & opts->suboptions) {  in mptcp_write_options()
1040 		if (opts->ahmac)  in mptcp_write_options()
1043 					      opts->addr_id);  in mptcp_write_options()
1048 					      opts->addr_id);  in mptcp_write_options()
1049 		memcpy((u8 *)ptr, opts->addr6.s6_addr, 16);  in mptcp_write_options()
1051 		if (opts->ahmac) {  in mptcp_write_options()
1052 			put_unaligned_be64(opts->ahmac, ptr);  in mptcp_write_options()
1058 	if (OPTION_MPTCP_RM_ADDR & opts->suboptions) {  in mptcp_write_options()
1061 				      0, opts->rm_id);  in mptcp_write_options()
1064 	if (OPTION_MPTCP_MPJ_SYN & opts->suboptions) {  in mptcp_write_options()
1067 				      opts->backup, opts->join_id);  in mptcp_write_options()
1068 		put_unaligned_be32(opts->token, ptr);  in mptcp_write_options()
1070 		put_unaligned_be32(opts->nonce, ptr);  in mptcp_write_options()
1074 	if (OPTION_MPTCP_MPJ_SYNACK & opts->suboptions) {  in mptcp_write_options()
1077 				      opts->backup, opts->join_id);  in mptcp_write_options()
1078 		put_unaligned_be64(opts->thmac, ptr);  in mptcp_write_options()
1080 		put_unaligned_be32(opts->nonce, ptr);  in mptcp_write_options()
1084 	if (OPTION_MPTCP_MPJ_ACK & opts->suboptions) {  in mptcp_write_options()
1087 		memcpy(ptr, opts->hmac, MPTCPOPT_HMAC_LEN);  in mptcp_write_options()
1091 	if (opts->ext_copy.use_ack || opts->ext_copy.use_map) {  in mptcp_write_options()
1092 		struct mptcp_ext *mpext = &opts->ext_copy;  in mptcp_write_options()