| /linux-6.14.4/net/mptcp/ |
| D | subflow.c | 346 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); in subflow_prep_synack() local
354 mptcp_fastopen_subflow_synack_set_params(subflow, req); in subflow_prep_synack()
413 static bool subflow_thmac_valid(struct mptcp_subflow_context *subflow) in subflow_thmac_valid() argument
418 subflow_generate_hmac(subflow->remote_key, subflow->local_key, in subflow_thmac_valid()
419 subflow->remote_nonce, subflow->local_nonce, in subflow_thmac_valid()
424 subflow, subflow->token, thmac, subflow->thmac); in subflow_thmac_valid()
426 return thmac == subflow->thmac; in subflow_thmac_valid()
431 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in mptcp_subflow_reset() local
432 struct sock *sk = subflow->conn; in mptcp_subflow_reset()
458 struct mptcp_subflow_context *subflow; in __mptcp_sync_state() local
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| D | options.c | 404 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); in mptcp_syn_options() local
409 subflow->snd_isn = TCP_SKB_CB(skb)->end_seq; in mptcp_syn_options()
410 if (subflow->request_mptcp) { in mptcp_syn_options()
416 } else if (subflow->request_join) { in mptcp_syn_options()
417 pr_debug("remote_token=%u, nonce=%u\n", subflow->remote_token, in mptcp_syn_options()
418 subflow->local_nonce); in mptcp_syn_options()
420 opts->join_id = subflow->local_id; in mptcp_syn_options()
421 opts->token = subflow->remote_token; in mptcp_syn_options()
422 opts->nonce = subflow->local_nonce; in mptcp_syn_options()
423 opts->backup = subflow->request_bkup; in mptcp_syn_options()
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| D | protocol.c | 70 struct mptcp_subflow_context *subflow; in __mptcp_socket_create() local
81 subflow = mptcp_subflow_ctx(ssock->sk); in __mptcp_socket_create()
82 list_add(&subflow->node, &msk->conn_list); in __mptcp_socket_create()
84 subflow->request_mptcp = 1; in __mptcp_socket_create()
85 subflow->subflow_id = msk->subflow_id++; in __mptcp_socket_create()
88 WRITE_ONCE(subflow->local_id, 0); in __mptcp_socket_create()
343 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in __mptcp_move_skb() local
365 MPTCP_SKB_CB(skb)->map_seq = mptcp_subflow_get_mapped_dsn(subflow); in __mptcp_move_skb()
485 static long mptcp_timeout_from_subflow(const struct mptcp_subflow_context *subflow) in mptcp_timeout_from_subflow() argument
487 const struct sock *ssk = mptcp_subflow_tcp_sock(subflow); in mptcp_timeout_from_subflow()
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| D | protocol.h | 590 mptcp_subflow_tcp_sock(const struct mptcp_subflow_context *subflow) in mptcp_subflow_tcp_sock() argument
592 return subflow->tcp_sock; in mptcp_subflow_tcp_sock()
596 mptcp_subflow_ctx_reset(struct mptcp_subflow_context *subflow) in mptcp_subflow_ctx_reset() argument
598 memset(&subflow->reset, 0, sizeof(subflow->reset)); in mptcp_subflow_ctx_reset()
599 subflow->request_mptcp = 1; in mptcp_subflow_ctx_reset()
600 WRITE_ONCE(subflow->local_id, -1); in mptcp_subflow_ctx_reset()
633 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); in mptcp_send_active_reset_reason() local
636 reason = sk_rst_convert_mptcp_reason(subflow->reset_reason); in mptcp_send_active_reset_reason()
641 mptcp_subflow_get_map_offset(const struct mptcp_subflow_context *subflow) in mptcp_subflow_get_map_offset() argument
643 return tcp_sk(mptcp_subflow_tcp_sock(subflow))->copied_seq - in mptcp_subflow_get_map_offset()
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| D | pm.c | 180 const struct mptcp_subflow_context *subflow) in mptcp_pm_subflow_check_next() argument
185 update_subflows = subflow->request_join || subflow->mp_join; in mptcp_pm_subflow_check_next()
214 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in mptcp_pm_add_addr_received() local
215 struct mptcp_sock *msk = mptcp_sk(subflow->conn); in mptcp_pm_add_addr_received()
290 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in mptcp_pm_mp_prio_received() local
291 struct sock *sk = subflow->conn; in mptcp_pm_mp_prio_received()
294 pr_debug("subflow->backup=%d, bkup=%d\n", subflow->backup, bkup); in mptcp_pm_mp_prio_received()
296 if (subflow->backup != bkup) in mptcp_pm_mp_prio_received()
297 subflow->backup = bkup; in mptcp_pm_mp_prio_received()
304 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); in mptcp_pm_mp_fail_received() local
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| D | fastopen.c | 9 void mptcp_fastopen_subflow_synack_set_params(struct mptcp_subflow_context *subflow, in mptcp_fastopen_subflow_synack_set_params() argument
19 if (!subflow) in mptcp_fastopen_subflow_synack_set_params()
22 ssk = subflow->tcp_sock; in mptcp_fastopen_subflow_synack_set_params()
23 sk = subflow->conn; in mptcp_fastopen_subflow_synack_set_params()
26 subflow->is_mptfo = 1; in mptcp_fastopen_subflow_synack_set_params()
41 subflow->ssn_offset += skb->len; in mptcp_fastopen_subflow_synack_set_params()
62 void __mptcp_fastopen_gen_msk_ackseq(struct mptcp_sock *msk, struct mptcp_subflow_context *subflow, in __mptcp_fastopen_gen_msk_ackseq() argument
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| D | sched.c | 138 void mptcp_subflow_set_scheduled(struct mptcp_subflow_context *subflow, in mptcp_subflow_set_scheduled() argument
141 WRITE_ONCE(subflow->scheduled, scheduled); in mptcp_subflow_set_scheduled()
146 struct mptcp_subflow_context *subflow; in mptcp_sched_get_send() local
162 mptcp_for_each_subflow(msk, subflow) { in mptcp_sched_get_send()
163 if (READ_ONCE(subflow->scheduled)) in mptcp_sched_get_send()
175 struct mptcp_subflow_context *subflow; in mptcp_sched_get_retrans() local
184 mptcp_for_each_subflow(msk, subflow) { in mptcp_sched_get_retrans()
185 if (READ_ONCE(subflow->scheduled)) in mptcp_sched_get_retrans()
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| D | sockopt.c | 72 struct mptcp_subflow_context *subflow; in mptcp_sol_socket_sync_intval() local
78 mptcp_for_each_subflow(msk, subflow) { in mptcp_sol_socket_sync_intval()
79 struct sock *ssk = mptcp_subflow_tcp_sock(subflow); in mptcp_sol_socket_sync_intval()
116 subflow->setsockopt_seq = msk->setsockopt_seq; in mptcp_sol_socket_sync_intval()
150 struct mptcp_subflow_context *subflow; in mptcp_setsockopt_sol_socket_tstamp() local
160 mptcp_for_each_subflow(msk, subflow) { in mptcp_setsockopt_sol_socket_tstamp()
161 struct sock *ssk = mptcp_subflow_tcp_sock(subflow); in mptcp_setsockopt_sol_socket_tstamp()
210 struct mptcp_subflow_context *subflow; in mptcp_setsockopt_sol_socket_timestamping() local
236 mptcp_for_each_subflow(msk, subflow) { in mptcp_setsockopt_sol_socket_timestamping()
237 struct sock *ssk = mptcp_subflow_tcp_sock(subflow); in mptcp_setsockopt_sol_socket_timestamping()
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| D | token.c | 153 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); in mptcp_token_new_connect() local
154 struct mptcp_sock *msk = mptcp_sk(subflow->conn); in mptcp_token_new_connect()
156 struct sock *sk = subflow->conn; in mptcp_token_new_connect()
160 mptcp_crypto_key_gen_sha(&subflow->local_key, &subflow->token, in mptcp_token_new_connect()
161 &subflow->idsn); in mptcp_token_new_connect()
163 bucket = token_bucket(subflow->token); in mptcp_token_new_connect()
165 if (__token_bucket_busy(bucket, subflow->token)) { in mptcp_token_new_connect()
173 ssk, subflow->local_key, subflow->token, subflow->idsn); in mptcp_token_new_connect()
175 WRITE_ONCE(msk->token, subflow->token); in mptcp_token_new_connect()
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| D | pm_netlink.c | 113 struct mptcp_subflow_context *subflow; in mptcp_lookup_subflow_by_saddr() local
117 list_for_each_entry(subflow, list, node) { in mptcp_lookup_subflow_by_saddr()
118 skc = (struct sock_common *)mptcp_subflow_tcp_sock(subflow); in mptcp_lookup_subflow_by_saddr()
131 struct mptcp_subflow_context *subflow; in lookup_subflow_by_daddr() local
134 list_for_each_entry(subflow, list, node) { in lookup_subflow_by_daddr()
135 struct sock *ssk = mptcp_subflow_tcp_sock(subflow); in lookup_subflow_by_daddr()
425 struct mptcp_subflow_context *subflow; in fill_remote_addresses_vec() local
452 mptcp_for_each_subflow(msk, subflow) in fill_remote_addresses_vec()
453 if (READ_ONCE(subflow->local_id) == local->id) in fill_remote_addresses_vec()
454 __set_bit(subflow->remote_id, unavail_id); in fill_remote_addresses_vec()
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| D | ctrl.c | 403 struct mptcp_subflow_context *subflow; in mptcp_active_detect_blackhole() local
408 subflow = mptcp_subflow_ctx(ssk); in mptcp_active_detect_blackhole()
410 if (subflow->request_mptcp && ssk->sk_state == TCP_SYN_SENT) { in mptcp_active_detect_blackhole()
419 subflow->mpc_drop = 1; in mptcp_active_detect_blackhole()
420 mptcp_subflow_early_fallback(mptcp_sk(subflow->conn), subflow); in mptcp_active_detect_blackhole()
423 subflow->mpc_drop = 0; in mptcp_active_detect_blackhole()
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| D | pm_userspace.c | 260 struct mptcp_subflow_context *subflow; in mptcp_userspace_pm_remove_id_zero_address() local
266 mptcp_for_each_subflow(msk, subflow) { in mptcp_userspace_pm_remove_id_zero_address()
267 if (READ_ONCE(subflow->local_id) == 0) { in mptcp_userspace_pm_remove_id_zero_address()
440 struct mptcp_subflow_context *subflow; in mptcp_nl_find_ssk() local
445 mptcp_for_each_subflow(msk, subflow) { in mptcp_nl_find_ssk()
449 ssk = mptcp_subflow_tcp_sock(subflow); in mptcp_nl_find_ssk()
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| D | Makefile | 4 mptcp-y := protocol.o subflow.o options.o token.o crypto.o ctrl.o pm.o diag.o \
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| D | Kconfig | 10 subflows in order to utilize multiple network paths. Each subflow
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| /linux-6.14.4/tools/testing/selftests/net/mptcp/ |
| D | mptcp_join.sh | 1664 local subflow="client"
1678 subflow="server"
1691 print_check "rm subflow ${subflow}"
1937 pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
1946 pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
1955 pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
1964 pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
1965 pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
1974 pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
1975 pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
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| D | pm_netlink.sh | 150 add_endpoint 10.0.1.2 flags subflow dev lo
156 "2,10.0.1.2,subflow,lo" \
242 add_endpoint 10.0.1.1 flags subflow
244 check "show_endpoints" "$(format_endpoints "1,10.0.1.1,subflow backup")" \
247 check "show_endpoints" "$(format_endpoints "1,10.0.1.1,subflow")" \
254 check "show_endpoints" "$(format_endpoints "1,10.0.1.1,subflow fullmesh")" \
257 check "show_endpoints" "$(format_endpoints "1,10.0.1.1,subflow")" \
260 check "show_endpoints" "$(format_endpoints "1,10.0.1.1,subflow backup fullmesh")" \
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| D | simult_flows.sh | 90 mptcp_lib_pm_nl_add_endpoint "${ns1}" 10.0.2.1 dev ns1eth2 flags subflow
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| /linux-6.14.4/include/trace/events/ |
| D | mptcp.h | 20 TP_PROTO(struct mptcp_subflow_context *subflow),
22 TP_ARGS(subflow),
36 __entry->active = mptcp_subflow_active(subflow);
37 __entry->backup = subflow->backup || subflow->request_bkup;
39 if (subflow->tcp_sock && sk_fullsock(subflow->tcp_sock))
40 __entry->free = sk_stream_memory_free(subflow->tcp_sock);
44 ssk = mptcp_subflow_tcp_sock(subflow);
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| /linux-6.14.4/tools/testing/selftests/bpf/progs/ |
| D | mptcp_subflow.c | 65 struct mptcp_subflow_context *subflow; in _check_getsockopt_subflow_mark() local
68 mptcp_for_each_subflow(msk, subflow) { in _check_getsockopt_subflow_mark()
71 ssk = mptcp_subflow_tcp_sock(bpf_core_cast(subflow, in _check_getsockopt_subflow_mark()
85 struct mptcp_subflow_context *subflow; in _check_getsockopt_subflow_cc() local
87 mptcp_for_each_subflow(msk, subflow) { in _check_getsockopt_subflow_cc()
91 ssk = mptcp_subflow_tcp_sock(bpf_core_cast(subflow, in _check_getsockopt_subflow_cc()
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| D | mptcp_bpf.h | 37 mptcp_subflow_tcp_sock(const struct mptcp_subflow_context *subflow) in mptcp_subflow_tcp_sock() argument
39 return subflow->tcp_sock; in mptcp_subflow_tcp_sock()
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| /linux-6.14.4/Documentation/networking/ |
| D | mptcp-sysctl.rst | 22 by the initial subflow if the value is 1. This controls a flag that is
59 unchanged for such time, after the last subflow removal, before
77 socket. In-kernel path management will control subflow
80 API. Userspace path management puts per-MPTCP-connection subflow
102 pending outstanding data on a given subflow required to declare it stale.
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| D | mptcp.rst | 41 (Linux-specific), a *subflow* (or *path*) is created. This *subflow* consists of
45 *option* field of the underlying TCP *subflow*. This field contains, amongst
79 The Packet Scheduler is in charge of selecting which available *subflow(s)* to
127 values per subflow.
151 kernel is in charge of creating subflow sockets: they are TCP sockets where the
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