40 	struct mptcp_subflow_request_sock *subflow_req = mptcp_subflow_rsk(req);  in subflow_req_destructor()  local
42 	pr_debug("subflow_req=%p", subflow_req);  in subflow_req_destructor()
44 	if (subflow_req->msk)  in subflow_req_destructor()
45 		sock_put((struct sock *)subflow_req->msk);  in subflow_req_destructor()
71 static void subflow_req_create_thmac(struct mptcp_subflow_request_sock *subflow_req)  in subflow_req_create_thmac()  argument
73 	struct mptcp_sock *msk = subflow_req->msk;  in subflow_req_create_thmac()
76 	get_random_bytes(&subflow_req->local_nonce, sizeof(u32));  in subflow_req_create_thmac()
79 			      subflow_req->local_nonce,  in subflow_req_create_thmac()
80 			      subflow_req->remote_nonce, hmac);  in subflow_req_create_thmac()
82 	subflow_req->thmac = get_unaligned_be64(hmac);  in subflow_req_create_thmac()
87 	struct mptcp_subflow_request_sock *subflow_req = mptcp_subflow_rsk(req);  in subflow_token_join_request()  local
91 	msk = mptcp_token_get_sock(sock_net(req_to_sk(req)), subflow_req->token);  in subflow_token_join_request()
102 	subflow_req->local_id = local_id;  in subflow_token_join_request()
109 	struct mptcp_subflow_request_sock *subflow_req = mptcp_subflow_rsk(req);  in subflow_init_req()  local
111 	subflow_req->mp_capable = 0;  in subflow_init_req()
112 	subflow_req->mp_join = 0;  in subflow_init_req()
113 	subflow_req->csum_reqd = mptcp_is_checksum_enabled(sock_net(sk_listener));  in subflow_init_req()
114 	subflow_req->allow_join_id0 = mptcp_allow_join_id0(sock_net(sk_listener));  in subflow_init_req()
115 	subflow_req->msk = NULL;  in subflow_init_req()
144 	struct mptcp_subflow_request_sock *subflow_req = mptcp_subflow_rsk(req);  in subflow_check_req()  local
148 	pr_debug("subflow_req=%p, listener=%p", subflow_req, listener);  in subflow_check_req()
174 		subflow_req->ssn_offset = TCP_SKB_CB(skb)->seq;  in subflow_check_req()
177 			get_random_bytes(&subflow_req->local_key, sizeof(subflow_req->local_key));  in subflow_check_req()
178 		} while (subflow_req->local_key == 0);  in subflow_check_req()
181 			mptcp_crypto_key_sha(subflow_req->local_key,  in subflow_check_req()
182 					     &subflow_req->token,  in subflow_check_req()
183 					     &subflow_req->idsn);  in subflow_check_req()
184 			if (mptcp_token_exists(subflow_req->token)) {  in subflow_check_req()
189 				subflow_req->mp_capable = 1;  in subflow_check_req()
196 			subflow_req->mp_capable = 1;  in subflow_check_req()
203 		subflow_req->ssn_offset = TCP_SKB_CB(skb)->seq;  in subflow_check_req()
204 		subflow_req->mp_join = 1;  in subflow_check_req()
205 		subflow_req->backup = mp_opt.backup;  in subflow_check_req()
206 		subflow_req->remote_id = mp_opt.join_id;  in subflow_check_req()
207 		subflow_req->token = mp_opt.token;  in subflow_check_req()
208 		subflow_req->remote_nonce = mp_opt.nonce;  in subflow_check_req()
209 		subflow_req->msk = subflow_token_join_request(req);  in subflow_check_req()
212 		if (!subflow_req->msk) {  in subflow_check_req()
217 		if (subflow_use_different_sport(subflow_req->msk, sk_listener)) {  in subflow_check_req()
220 				 ntohs(inet_sk((struct sock *)subflow_req->msk)->inet_sport));  in subflow_check_req()
221 			if (!mptcp_pm_sport_in_anno_list(subflow_req->msk, sk_listener)) {  in subflow_check_req()
228 		subflow_req_create_thmac(subflow_req);  in subflow_check_req()
231 			if (mptcp_can_accept_new_subflow(subflow_req->msk))  in subflow_check_req()
232 				subflow_init_req_cookie_join_save(subflow_req, skb);  in subflow_check_req()
237 		pr_debug("token=%u, remote_nonce=%u msk=%p", subflow_req->token,  in subflow_check_req()
238 			 subflow_req->remote_nonce, subflow_req->msk);  in subflow_check_req()
249 	struct mptcp_subflow_request_sock *subflow_req = mptcp_subflow_rsk(req);  in mptcp_subflow_init_cookie_req()  local
266 		subflow_req->local_key = mp_opt.rcvr_key;  in mptcp_subflow_init_cookie_req()
271 		subflow_req->mp_capable = 1;  in mptcp_subflow_init_cookie_req()
272 		subflow_req->ssn_offset = TCP_SKB_CB(skb)->seq - 1;  in mptcp_subflow_init_cookie_req()
274 		if (!mptcp_token_join_cookie_init_state(subflow_req, skb))  in mptcp_subflow_init_cookie_req()
277 		subflow_req->mp_join = 1;  in mptcp_subflow_init_cookie_req()
278 		subflow_req->ssn_offset = TCP_SKB_CB(skb)->seq - 1;  in mptcp_subflow_init_cookie_req()
589 	const struct mptcp_subflow_request_sock *subflow_req;  in subflow_hmac_valid()  local
593 	subflow_req = mptcp_subflow_rsk(req);  in subflow_hmac_valid()
594 	msk = subflow_req->msk;  in subflow_hmac_valid()
599 			      subflow_req->remote_nonce,  in subflow_hmac_valid()
600 			      subflow_req->local_nonce, hmac);  in subflow_hmac_valid()
682 	struct mptcp_subflow_request_sock *subflow_req;  in subflow_syn_recv_sock()  local
696 	subflow_req = mptcp_subflow_rsk(req);  in subflow_syn_recv_sock()
697 	fallback_is_fatal = tcp_rsk(req)->is_mptcp && subflow_req->mp_join;  in subflow_syn_recv_sock()
703 	if (subflow_req->mp_capable) {  in subflow_syn_recv_sock()
721 	} else if (subflow_req->mp_join) {  in subflow_syn_recv_sock()
725 		    !mptcp_can_accept_new_subflow(subflow_req->msk)) {  in subflow_syn_recv_sock()
774 			mptcp_token_accept(subflow_req, mptcp_sk(new_msk));  in subflow_syn_recv_sock()
786 			owner = subflow_req->msk;  in subflow_syn_recv_sock()
793 			subflow_req->msk = NULL;  in subflow_syn_recv_sock()
1847 	struct mptcp_subflow_request_sock *subflow_req = mptcp_subflow_rsk(req);  in subflow_ulp_clone()  local
1852 	    (!subflow_req->mp_capable && !subflow_req->mp_join)) {  in subflow_ulp_clone()
1870 	if (subflow_req->mp_capable) {  in subflow_ulp_clone()
1875 		new_ctx->local_key = subflow_req->local_key;  in subflow_ulp_clone()
1876 		new_ctx->token = subflow_req->token;  in subflow_ulp_clone()
1877 		new_ctx->ssn_offset = subflow_req->ssn_offset;  in subflow_ulp_clone()
1878 		new_ctx->idsn = subflow_req->idsn;  in subflow_ulp_clone()
1882 	} else if (subflow_req->mp_join) {  in subflow_ulp_clone()
1883 		new_ctx->ssn_offset = subflow_req->ssn_offset;  in subflow_ulp_clone()
1886 		new_ctx->backup = subflow_req->backup;  in subflow_ulp_clone()
1887 		new_ctx->remote_id = subflow_req->remote_id;  in subflow_ulp_clone()
1888 		new_ctx->token = subflow_req->token;  in subflow_ulp_clone()
1889 		new_ctx->thmac = subflow_req->thmac;  in subflow_ulp_clone()
1894 		subflow_set_local_id(new_ctx, subflow_req->local_id);  in subflow_ulp_clone()