diff options
| -rw-r--r-- | net/mptcp/mib.c | 1 | ||||
| -rw-r--r-- | net/mptcp/mib.h | 1 | ||||
| -rw-r--r-- | net/mptcp/pm_netlink.c | 1 | ||||
| -rw-r--r-- | net/mptcp/protocol.h | 1 | ||||
| -rw-r--r-- | net/mptcp/subflow.c | 11 |
5 files changed, 15 insertions, 0 deletions
diff --git a/net/mptcp/mib.c b/net/mptcp/mib.c index ad88bd3c58df..19eb9292bd60 100644 --- a/net/mptcp/mib.c +++ b/net/mptcp/mib.c @@ -17,6 +17,7 @@ static const struct snmp_mib mptcp_snmp_list[] = { SNMP_MIB_ITEM("MPCapableFallbackSYNACK", MPTCP_MIB_MPCAPABLEACTIVEFALLBACK), SNMP_MIB_ITEM("MPCapableSYNTXDrop", MPTCP_MIB_MPCAPABLEACTIVEDROP), SNMP_MIB_ITEM("MPCapableSYNTXDisabled", MPTCP_MIB_MPCAPABLEACTIVEDISABLED), + SNMP_MIB_ITEM("MPCapableEndpAttempt", MPTCP_MIB_MPCAPABLEENDPATTEMPT), SNMP_MIB_ITEM("MPFallbackTokenInit", MPTCP_MIB_TOKENFALLBACKINIT), SNMP_MIB_ITEM("MPTCPRetrans", MPTCP_MIB_RETRANSSEGS), SNMP_MIB_ITEM("MPJoinNoTokenFound", MPTCP_MIB_JOINNOTOKEN), diff --git a/net/mptcp/mib.h b/net/mptcp/mib.h index 3206cdda8bb1..128282982843 100644 --- a/net/mptcp/mib.h +++ b/net/mptcp/mib.h @@ -12,6 +12,7 @@ enum linux_mptcp_mib_field { MPTCP_MIB_MPCAPABLEACTIVEFALLBACK, /* Client-side fallback during 3-way handshake */ MPTCP_MIB_MPCAPABLEACTIVEDROP, /* Client-side fallback due to a MPC drop */ MPTCP_MIB_MPCAPABLEACTIVEDISABLED, /* Client-side disabled due to past issues */ + MPTCP_MIB_MPCAPABLEENDPATTEMPT, /* Prohibited MPC to port-based endp */ MPTCP_MIB_TOKENFALLBACKINIT, /* Could not init/allocate token */ MPTCP_MIB_RETRANSSEGS, /* Segments retransmitted at the MPTCP-level */ MPTCP_MIB_JOINNOTOKEN, /* Received MP_JOIN but the token was not found */ diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index f6f0a38a0750..1a78998fe1f4 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1121,6 +1121,7 @@ static int mptcp_pm_nl_create_listen_socket(struct sock *sk, */ inet_sk_state_store(newsk, TCP_LISTEN); lock_sock(ssk); + WRITE_ONCE(mptcp_subflow_ctx(ssk)->pm_listener, true); err = __inet_listen_sk(ssk, backlog); if (!err) mptcp_event_pm_listener(ssk, MPTCP_EVENT_LISTENER_CREATED); diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 74417aae08d0..568a72702b08 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -535,6 +535,7 @@ struct mptcp_subflow_context { __unused : 8; bool data_avail; bool scheduled; + bool pm_listener; /* a listener managed by the kernel PM? */ u32 remote_nonce; u64 thmac; u32 local_nonce; diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index 25dde81bcb75..6170f2fff71e 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -132,6 +132,13 @@ static void subflow_add_reset_reason(struct sk_buff *skb, u8 reason) } } +static int subflow_reset_req_endp(struct request_sock *req, struct sk_buff *skb) +{ + SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_MPCAPABLEENDPATTEMPT); + subflow_add_reset_reason(skb, MPTCP_RST_EPROHIBIT); + return -EPERM; +} + /* Init mptcp request socket. * * Returns an error code if a JOIN has failed and a TCP reset @@ -165,6 +172,8 @@ static int subflow_check_req(struct request_sock *req, if (opt_mp_capable) { SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_MPCAPABLEPASSIVE); + if (unlikely(listener->pm_listener)) + return subflow_reset_req_endp(req, skb); if (opt_mp_join) return 0; } else if (opt_mp_join) { @@ -172,6 +181,8 @@ static int subflow_check_req(struct request_sock *req, if (mp_opt.backup) SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_JOINSYNBACKUPRX); + } else if (unlikely(listener->pm_listener)) { + return subflow_reset_req_endp(req, skb); } if (opt_mp_capable && listener->request_mptcp) { |