25 			       struct mptcp_options_received *mp_opt)  in mptcp_parse_option()  argument
89 			mp_opt->suboptions |= OPTION_MPTCP_CSUMREQD;  in mptcp_parse_option()
91 		mp_opt->deny_join_id0 = !!(flags & MPTCP_CAP_DENY_JOIN_ID0);  in mptcp_parse_option()
93 		mp_opt->suboptions |= subopt;  in mptcp_parse_option()
95 			mp_opt->sndr_key = get_unaligned_be64(ptr);  in mptcp_parse_option()
99 			mp_opt->rcvr_key = get_unaligned_be64(ptr);  in mptcp_parse_option()
108 			mp_opt->suboptions |= OPTION_MPTCP_DSS;  in mptcp_parse_option()
109 			mp_opt->use_map = 1;  in mptcp_parse_option()
110 			mp_opt->mpc_map = 1;  in mptcp_parse_option()
111 			mp_opt->data_len = get_unaligned_be16(ptr);  in mptcp_parse_option()
115 			mp_opt->csum = get_unaligned((__force __sum16 *)ptr);  in mptcp_parse_option()
116 			mp_opt->suboptions |= OPTION_MPTCP_CSUMREQD;  in mptcp_parse_option()
120 			 version, flags, opsize, mp_opt->sndr_key,  in mptcp_parse_option()
121 			 mp_opt->rcvr_key, mp_opt->data_len, mp_opt->csum);  in mptcp_parse_option()
125 		mp_opt->suboptions |= OPTIONS_MPTCP_MPJ;  in mptcp_parse_option()
127 			mp_opt->backup = *ptr++ & MPTCPOPT_BACKUP;  in mptcp_parse_option()
128 			mp_opt->join_id = *ptr++;  in mptcp_parse_option()
129 			mp_opt->token = get_unaligned_be32(ptr);  in mptcp_parse_option()
131 			mp_opt->nonce = get_unaligned_be32(ptr);  in mptcp_parse_option()
134 				 mp_opt->backup, mp_opt->join_id,  in mptcp_parse_option()
135 				 mp_opt->token, mp_opt->nonce);  in mptcp_parse_option()
137 			mp_opt->backup = *ptr++ & MPTCPOPT_BACKUP;  in mptcp_parse_option()
138 			mp_opt->join_id = *ptr++;  in mptcp_parse_option()
139 			mp_opt->thmac = get_unaligned_be64(ptr);  in mptcp_parse_option()
141 			mp_opt->nonce = get_unaligned_be32(ptr);  in mptcp_parse_option()
144 				 mp_opt->backup, mp_opt->join_id,  in mptcp_parse_option()
145 				 mp_opt->thmac, mp_opt->nonce);  in mptcp_parse_option()
148 			memcpy(mp_opt->hmac, ptr, MPTCPOPT_HMAC_LEN);  in mptcp_parse_option()
151 			mp_opt->suboptions &= ~OPTIONS_MPTCP_MPJ;  in mptcp_parse_option()
163 		mp_opt->mpc_map = 0;  in mptcp_parse_option()
165 		mp_opt->data_fin = (flags & MPTCP_DSS_DATA_FIN) != 0;  in mptcp_parse_option()
166 		mp_opt->dsn64 = (flags & MPTCP_DSS_DSN64) != 0;  in mptcp_parse_option()
167 		mp_opt->use_map = (flags & MPTCP_DSS_HAS_MAP) != 0;  in mptcp_parse_option()
168 		mp_opt->ack64 = (flags & MPTCP_DSS_ACK64) != 0;  in mptcp_parse_option()
169 		mp_opt->use_ack = (flags & MPTCP_DSS_HAS_ACK);  in mptcp_parse_option()
172 			 mp_opt->data_fin, mp_opt->dsn64,  in mptcp_parse_option()
173 			 mp_opt->use_map, mp_opt->ack64,  in mptcp_parse_option()
174 			 mp_opt->use_ack);  in mptcp_parse_option()
178 		if (mp_opt->use_ack) {  in mptcp_parse_option()
179 			if (mp_opt->ack64)  in mptcp_parse_option()
185 		if (mp_opt->use_map) {  in mptcp_parse_option()
186 			if (mp_opt->dsn64)  in mptcp_parse_option()
199 		mp_opt->suboptions |= OPTION_MPTCP_DSS;  in mptcp_parse_option()
200 		if (mp_opt->use_ack) {  in mptcp_parse_option()
201 			if (mp_opt->ack64) {  in mptcp_parse_option()
202 				mp_opt->data_ack = get_unaligned_be64(ptr);  in mptcp_parse_option()
205 				mp_opt->data_ack = get_unaligned_be32(ptr);  in mptcp_parse_option()
209 			pr_debug("data_ack=%llu", mp_opt->data_ack);  in mptcp_parse_option()
212 		if (mp_opt->use_map) {  in mptcp_parse_option()
213 			if (mp_opt->dsn64) {  in mptcp_parse_option()
214 				mp_opt->data_seq = get_unaligned_be64(ptr);  in mptcp_parse_option()
217 				mp_opt->data_seq = get_unaligned_be32(ptr);  in mptcp_parse_option()
221 			mp_opt->subflow_seq = get_unaligned_be32(ptr);  in mptcp_parse_option()
224 			mp_opt->data_len = get_unaligned_be16(ptr);  in mptcp_parse_option()
228 				mp_opt->suboptions |= OPTION_MPTCP_CSUMREQD;  in mptcp_parse_option()
229 				mp_opt->csum = get_unaligned((__force __sum16 *)ptr);  in mptcp_parse_option()
234 				 mp_opt->data_seq, mp_opt->subflow_seq,  in mptcp_parse_option()
235 				 mp_opt->data_len, !!(mp_opt->suboptions & OPTION_MPTCP_CSUMREQD),  in mptcp_parse_option()
236 				 mp_opt->csum);  in mptcp_parse_option()
242 		mp_opt->echo = (*ptr++) & MPTCP_ADDR_ECHO;  in mptcp_parse_option()
243 		if (!mp_opt->echo) {  in mptcp_parse_option()
246 				mp_opt->addr.family = AF_INET;  in mptcp_parse_option()
250 				mp_opt->addr.family = AF_INET6;  in mptcp_parse_option()
257 				mp_opt->addr.family = AF_INET;  in mptcp_parse_option()
261 				mp_opt->addr.family = AF_INET6;  in mptcp_parse_option()
267 		mp_opt->suboptions |= OPTION_MPTCP_ADD_ADDR;  in mptcp_parse_option()
268 		mp_opt->addr.id = *ptr++;  in mptcp_parse_option()
269 		mp_opt->addr.port = 0;  in mptcp_parse_option()
270 		mp_opt->ahmac = 0;  in mptcp_parse_option()
271 		if (mp_opt->addr.family == AF_INET) {  in mptcp_parse_option()
272 			memcpy((u8 *)&mp_opt->addr.addr.s_addr, (u8 *)ptr, 4);  in mptcp_parse_option()
276 				mp_opt->addr.port = htons(get_unaligned_be16(ptr));  in mptcp_parse_option()
282 			memcpy(mp_opt->addr.addr6.s6_addr, (u8 *)ptr, 16);  in mptcp_parse_option()
286 				mp_opt->addr.port = htons(get_unaligned_be16(ptr));  in mptcp_parse_option()
291 		if (!mp_opt->echo) {  in mptcp_parse_option()
292 			mp_opt->ahmac = get_unaligned_be64(ptr);  in mptcp_parse_option()
296 			 (mp_opt->addr.family == AF_INET6) ? "6" : "",  in mptcp_parse_option()
297 			 mp_opt->addr.id, mp_opt->ahmac, mp_opt->echo, ntohs(mp_opt->addr.port));  in mptcp_parse_option()
307 		mp_opt->suboptions |= OPTION_MPTCP_RM_ADDR;  in mptcp_parse_option()
308 		mp_opt->rm_list.nr = opsize - TCPOLEN_MPTCP_RM_ADDR_BASE;  in mptcp_parse_option()
309 		for (i = 0; i < mp_opt->rm_list.nr; i++)  in mptcp_parse_option()
310 			mp_opt->rm_list.ids[i] = *ptr++;  in mptcp_parse_option()
311 		pr_debug("RM_ADDR: rm_list_nr=%d", mp_opt->rm_list.nr);  in mptcp_parse_option()
318 		mp_opt->suboptions |= OPTION_MPTCP_PRIO;  in mptcp_parse_option()
319 		mp_opt->backup = *ptr++ & MPTCP_PRIO_BKUP;  in mptcp_parse_option()
320 		pr_debug("MP_PRIO: prio=%d", mp_opt->backup);  in mptcp_parse_option()
328 		mp_opt->rcvr_key = get_unaligned_be64(ptr);  in mptcp_parse_option()
330 		mp_opt->suboptions |= OPTION_MPTCP_FASTCLOSE;  in mptcp_parse_option()
331 		pr_debug("MP_FASTCLOSE: recv_key=%llu", mp_opt->rcvr_key);  in mptcp_parse_option()
341 		mp_opt->suboptions |= OPTION_MPTCP_RST;  in mptcp_parse_option()
343 		mp_opt->reset_transient = flags & MPTCP_RST_TRANSIENT;  in mptcp_parse_option()
344 		mp_opt->reset_reason = *ptr;  in mptcp_parse_option()
346 			 mp_opt->reset_transient, mp_opt->reset_reason);  in mptcp_parse_option()
354 		mp_opt->suboptions |= OPTION_MPTCP_FAIL;  in mptcp_parse_option()
355 		mp_opt->fail_seq = get_unaligned_be64(ptr);  in mptcp_parse_option()
356 		pr_debug("MP_FAIL: data_seq=%llu", mp_opt->fail_seq);  in mptcp_parse_option()
365 		       struct mptcp_options_received *mp_opt)  in mptcp_get_options()  argument
372 	mp_opt->suboptions = 0;  in mptcp_get_options()
396 				mptcp_parse_option(skb, ptr, opsize, mp_opt);  in mptcp_get_options()
927 				    struct mptcp_options_received *mp_opt)  in check_fully_established()  argument
939 		    subflow->mp_join && (mp_opt->suboptions & OPTIONS_MPTCP_MPJ) &&  in check_fully_established()
953 		if (subflow->is_mptfo && mp_opt->suboptions & OPTION_MPTCP_MPC_ACK)  in check_fully_established()
959 	    (((mp_opt->suboptions & OPTION_MPTCP_DSS) && mp_opt->use_ack) ||  in check_fully_established()
960 	     ((mp_opt->suboptions & OPTION_MPTCP_ADD_ADDR) && !mp_opt->echo))) {  in check_fully_established()
973 	if (!(mp_opt->suboptions & OPTIONS_MPTCP_MPC)) {  in check_fully_established()
982 	if (mp_opt->deny_join_id0)  in check_fully_established()
988 	mptcp_subflow_fully_established(subflow, mp_opt);  in check_fully_established()
1037 			   struct mptcp_options_received *mp_opt)  in ack_update_msk()  argument
1050 	new_snd_una = mptcp_expand_seq(old_snd_una, mp_opt->data_ack, mp_opt->ack64);  in ack_update_msk()
1071 	trace_ack_update_msk(mp_opt->data_ack,  in ack_update_msk()
1094 				struct mptcp_options_received *mp_opt)  in add_addr_hmac_valid()  argument
1098 	if (mp_opt->echo)  in add_addr_hmac_valid()
1103 				      &mp_opt->addr);  in add_addr_hmac_valid()
1106 		 msk, hmac, mp_opt->ahmac);  in add_addr_hmac_valid()
1108 	return hmac == mp_opt->ahmac;  in add_addr_hmac_valid()
1116 	struct mptcp_options_received mp_opt;  in mptcp_incoming_options()  local
1139 	mptcp_get_options(skb, &mp_opt);  in mptcp_incoming_options()
1144 	if (!check_fully_established(msk, sk, subflow, skb, &mp_opt))  in mptcp_incoming_options()
1147 	if (unlikely(mp_opt.suboptions != OPTION_MPTCP_DSS)) {  in mptcp_incoming_options()
1148 		if ((mp_opt.suboptions & OPTION_MPTCP_FASTCLOSE) &&  in mptcp_incoming_options()
1149 		    msk->local_key == mp_opt.rcvr_key) {  in mptcp_incoming_options()
1155 		if ((mp_opt.suboptions & OPTION_MPTCP_ADD_ADDR) &&  in mptcp_incoming_options()
1156 		    add_addr_hmac_valid(msk, &mp_opt)) {  in mptcp_incoming_options()
1157 			if (!mp_opt.echo) {  in mptcp_incoming_options()
1158 				mptcp_pm_add_addr_received(sk, &mp_opt.addr);  in mptcp_incoming_options()
1161 				mptcp_pm_add_addr_echoed(msk, &mp_opt.addr);  in mptcp_incoming_options()
1162 				mptcp_pm_del_add_timer(msk, &mp_opt.addr, true);  in mptcp_incoming_options()
1166 			if (mp_opt.addr.port)  in mptcp_incoming_options()
1170 		if (mp_opt.suboptions & OPTION_MPTCP_RM_ADDR)  in mptcp_incoming_options()
1171 			mptcp_pm_rm_addr_received(msk, &mp_opt.rm_list);  in mptcp_incoming_options()
1173 		if (mp_opt.suboptions & OPTION_MPTCP_PRIO) {  in mptcp_incoming_options()
1174 			mptcp_pm_mp_prio_received(sk, mp_opt.backup);  in mptcp_incoming_options()
1178 		if (mp_opt.suboptions & OPTION_MPTCP_FAIL) {  in mptcp_incoming_options()
1179 			mptcp_pm_mp_fail_received(sk, mp_opt.fail_seq);  in mptcp_incoming_options()
1183 		if (mp_opt.suboptions & OPTION_MPTCP_RST) {  in mptcp_incoming_options()
1185 			subflow->reset_reason = mp_opt.reset_reason;  in mptcp_incoming_options()
1186 			subflow->reset_transient = mp_opt.reset_transient;  in mptcp_incoming_options()
1190 		if (!(mp_opt.suboptions & OPTION_MPTCP_DSS))  in mptcp_incoming_options()
1197 	if (mp_opt.use_ack)  in mptcp_incoming_options()
1198 		ack_update_msk(msk, sk, &mp_opt);  in mptcp_incoming_options()
1206 		if (mp_opt.data_fin && mp_opt.data_len == 1 &&  in mptcp_incoming_options()
1207 		    mptcp_update_rcv_data_fin(msk, mp_opt.data_seq, mp_opt.dsn64))  in mptcp_incoming_options()
1219 	if (likely(mp_opt.use_map)) {  in mptcp_incoming_options()
1220 		if (mp_opt.mpc_map) {  in mptcp_incoming_options()
1232 			mpext->data_seq = mp_opt.data_seq;  in mptcp_incoming_options()
1233 			mpext->subflow_seq = mp_opt.subflow_seq;  in mptcp_incoming_options()
1234 			mpext->dsn64 = mp_opt.dsn64;  in mptcp_incoming_options()
1235 			mpext->data_fin = mp_opt.data_fin;  in mptcp_incoming_options()
1237 		mpext->data_len = mp_opt.data_len;  in mptcp_incoming_options()
1239 		mpext->csum_reqd = !!(mp_opt.suboptions & OPTION_MPTCP_CSUMREQD);  in mptcp_incoming_options()
1242 			mpext->csum = mp_opt.csum;  in mptcp_incoming_options()