net/mptcp/subflow.c

145 	struct mptcp_options_received mp_opt;
160 	mptcp_get_options(skb, &mp_opt);
162 	opt_mp_capable = !!(mp_opt.suboptions & OPTION_MPTCP_MPC_SYN);
163 	opt_mp_join = !!(mp_opt.suboptions & OPTION_MPTCP_MPJ_SYN);
207 		subflow_req->backup = mp_opt.backup;
208 		subflow_req->remote_id = mp_opt.join_id;
209 		subflow_req->token = mp_opt.token;
210 		subflow_req->remote_nonce = mp_opt.nonce;
255 	struct mptcp_options_received mp_opt;
260 	mptcp_get_options(skb, &mp_opt);
262 	opt_mp_capable = !!(mp_opt.suboptions & OPTION_MPTCP_MPC_ACK);
263 	opt_mp_join = !!(mp_opt.suboptions & OPTION_MPTCP_MPJ_ACK);
268 		if (mp_opt.sndr_key == 0)
271 		subflow_req->local_key = mp_opt.rcvr_key;
465 				   const struct mptcp_options_received *mp_opt)
474 	subflow->remote_key = mp_opt->sndr_key;
486 				  const struct mptcp_options_received *mp_opt)
491 	if (mp_opt) {
497 		subflow_set_remote_key(msk, subflow, mp_opt);
512 	struct mptcp_options_received mp_opt;
528 	mptcp_get_options(skb, &mp_opt);
530 		if (!(mp_opt.suboptions & OPTION_MPTCP_MPC_SYNACK)) {
538 		if (mp_opt.suboptions & OPTION_MPTCP_CSUMREQD)
540 		if (mp_opt.deny_join_id0)
545 		mptcp_propagate_state(parent, sk, subflow, &mp_opt);
549 		if (!(mp_opt.suboptions & OPTION_MPTCP_MPJ_SYNACK)) {
554 		subflow->backup = mp_opt.backup;
555 		subflow->thmac = mp_opt.thmac;
556 		subflow->remote_nonce = mp_opt.nonce;
557 		WRITE_ONCE(subflow->remote_id, mp_opt.join_id);
725 			       const struct mptcp_options_received *mp_opt)
741 	return !crypto_memneq(hmac, mp_opt->hmac, MPTCPOPT_HMAC_LEN);
776 				       const struct mptcp_options_received *mp_opt)
778 	subflow_set_remote_key(msk, subflow, mp_opt);
783 		__mptcp_fastopen_gen_msk_ackseq(msk, subflow, mp_opt);
795 	struct mptcp_options_received mp_opt;
806 	mp_opt.suboptions = 0;
825 		mptcp_get_options(skb, &mp_opt);
826 		if (!(mp_opt.suboptions &
831 		mptcp_get_options(skb, &mp_opt);
832 		if (!(mp_opt.suboptions & OPTION_MPTCP_MPJ_ACK) ||
833 		    !subflow_hmac_valid(req, &mp_opt) ||
865 			ctx->conn = mptcp_sk_clone_init(listener->conn, &mp_opt, child, req);
876 			if (mp_opt.suboptions & OPTION_MPTCP_MPC_ACK) {