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/linux-6.8/tools/testing/selftests/net/mptcp/
Dmptcp_join.sh655 local subflows=$3
658 ip -n $ns mptcp limits set add_addr_accepted $addrs subflows $subflows
660 ip netns exec $ns ./pm_nl_ctl limits $addrs $subflows
1822 fail_test "got $cnt1:$cnt2 subflows expected $subflow_nr"
1866 # $1: subflows in ns1 ; $2: subflows in ns2
1867 # number of all subflows, including the initial subflow.
1883 # if not, count the TCP connections that are in fact MPTCP subflows
1890 fail_test "got subflows $cnt1:$cnt2 expected $1:$2"
1983 # multiple subflows
1984 if reset "multiple subflows"; then
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Dpm_netlink.sh83 subflows 2" "defaults limits"
134 check "ip netns exec $ns1 ./pm_nl_ctl limits" "$default_limits" "subflows above hard limit"
138 subflows 8" "set limits"
Ddiag.sh100 __chk_nr "ss -nlHtON $ns | wc -l" "$expected" "$msg - subflows"
Dmptcp_sockopt.sh30 # just to debug: check we have multiple subflows connection requests
Duserspace_pm.sh584 print_title "Subflows v4 or v6 only tests"
819 print_title "Subflows v4 and v6 mix tests"
Dpm_nl_ctl.c1181 "subflows" : "accept", max); in print_limits()
1194 uint32_t rcv_addr = 0, subflows = 0; in get_set_limits() local
1202 subflows = atoi(argv[3]); in get_set_limits()
1224 memcpy(RTA_DATA(rta), &subflows, 4); in get_set_limits()
Dmptcp_sockopt.c101 __u32 size_arrays_user; /* max subflows that userspace is interested in;
/linux-6.8/Documentation/netlink/specs/
Dmptcp_pm.yaml35 A MPTCP connection is established (can start new subflows).
185 name: subflows
326 - subflows
336 - subflows
340 - subflows
/linux-6.8/net/mptcp/
Dpm.c95 pm->subflows++; in mptcp_pm_allow_new_subflow()
104 pr_debug("msk=%p subflows=%d max=%d allow=%d", msk, pm->subflows, in mptcp_pm_allow_new_subflow()
113 ret = pm->subflows < subflows_max; in mptcp_pm_allow_new_subflow()
114 if (ret && ++pm->subflows == subflows_max) in mptcp_pm_allow_new_subflow()
197 pm->subflows--; in mptcp_pm_subflow_check_next()
505 pm->subflows = 0; in mptcp_pm_data_reset()
Dpm_netlink.c235 if (msk->pm.subflows == mptcp_pm_get_subflows_max(msk) || in mptcp_pm_nl_check_work_pending()
427 msk->pm.subflows++; in fill_remote_addresses_vec()
432 /* Forbid creation of new subflows matching existing in fill_remote_addresses_vec()
453 if (msk->pm.subflows < subflows_max) { in fill_remote_addresses_vec()
458 msk->pm.subflows++; in fill_remote_addresses_vec()
537 /* do lazy endpoint usage accounting for the MPC subflows */ in mptcp_pm_create_subflow_or_signal_addr()
560 pr_debug("local %d:%d signal %d:%d subflows %d:%d\n", in mptcp_pm_create_subflow_or_signal_addr()
563 msk->pm.subflows, subflows_max); in mptcp_pm_create_subflow_or_signal_addr()
591 msk->pm.subflows < subflows_max) { in mptcp_pm_create_subflow_or_signal_addr()
650 if (msk->pm.subflows < subflows_max) { in fill_local_addresses_vec()
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Dsockopt.c372 * we must be careful with subflows in mptcp_setsockopt_sol_socket()
378 * SO_MAX_PACING_RATE is unsupported, we must be careful with subflows in mptcp_setsockopt_sol_socket()
540 /* IPV6_ADDR_PREFERENCES is not supported, we must be careful with subflows */ in mptcp_supported_sockopt()
855 * there are multiple subflows is not yet defined. It is up to the in mptcp_setsockopt()
856 * MPTCP-level socket to configure the subflows until the subflow in mptcp_setsockopt()
913 info->mptcpi_subflows = READ_ONCE(msk->pm.subflows); in mptcp_diag_fill_info()
1401 * there are multiple subflows is not yet defined. It is up to the in mptcp_getsockopt()
1402 * MPTCP-level socket to configure the subflows until the subflow in mptcp_getsockopt()
1482 /* subflows must ignore any latency-related settings: will not affect in mptcp_sockopt_sync_locked()
1521 /* propagate the rcvbuf changes to all the subflows */ in mptcp_set_rcvlowat()
Dmib.h60 MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */
61 MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */
DKconfig10 subflows in order to utilize multiple network paths. Each subflow
Dprotocol.h234 u8 subflows; member
327 u64 rtt_us; /* last maximum rtt of subflows */
457 struct list_head node;/* conn_list of subflows */
505 u64 iasn; /* initial ack sequence number, MPC subflows only */
1047 if (--msk->pm.subflows < mptcp_pm_get_subflows_max(msk)) in __mptcp_pm_close_subflow()
Dprotocol.c241 /* with 2 subflows, adding at end of ooo queue is quite likely in mptcp_data_queue_ofo()
1952 * Only difference: Use highest rtt estimate of the subflows in use.
2024 /* Make subflows follow along. If we do not do this, we in mptcp_rcv_space_adjust()
2078 /* we can have data pending in the subflows only if the msk in __mptcp_move_skbs()
2380 * Outgoing subflows use in-kernel sockets.
2381 * Incoming subflows do not have their own 'struct socket' allocated,
2461 /* Catch every 'all subflows closed' scenario, including peers silently in __mptcp_close_ssk()
2464 * as the protocol can still create more subflows. in __mptcp_close_ssk()
2623 /* limit retransmission to the bytes already sent on some subflows */ in __mptcp_retrans()
2932 /* we still need to enqueue subflows or not really shutting down, in mptcp_check_send_data_fin()
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Dsyncookies.c17 * token matches a known mptcp connection that can still accept more subflows.
Doptions.c936 * for mp_join subflows in check_fully_established()
948 * for MP_JOIN subflows as the peer must not send any data in check_fully_established()
962 /* subflows are fully established as soon as we get any in check_fully_established()
970 * MP_JOIN subflows. in check_fully_established()
Dsubflow.c1598 /* we account subflows before the creation, and this failures will not in __mptcp_subflow_connect()
1611 /* only the additional subflows created by kworkers have to be modified */ in mptcp_attach_cgroup()
1692 * socket, even if for additional subflows the allocation is performed in mptcp_subflow_create_socket()
2101 panic("MPTCP: failed to register subflows to ULP\n"); in mptcp_subflow_init()
Dpm_userspace.c398 msk->pm.subflows++; in mptcp_pm_nl_subflow_create_doit()
/linux-6.8/Documentation/networking/
Dmptcp-sysctl.rst80 The packet scheduler ignores stale subflows.
/linux-6.8/include/uapi/linux/
Dmptcp.h106 __u32 size_arrays_user; /* max subflows that userspace is interested in;
Dmptcp_pm.h21 * sport, dport A MPTCP connection is established (can start new subflows).
/linux-6.8/include/net/
Dmptcp.h104 u8 subflows; member
/linux-6.8/drivers/net/ethernet/netronome/nfp/flower/
Doffload.c1637 /* Do not cycle subflows if no stats to distribute. */ in __nfp_flower_update_merge_stats()
1648 * Distribute these stats to all subflows that form the merge. in __nfp_flower_update_merge_stats()
1649 * The stats will collected from TC via the subflows. in __nfp_flower_update_merge_stats()
/linux-6.8/net/sched/
Dsch_tbf.c319 subflows, it would be a very good solution. in tbf_dequeue()

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