From 1e75629cb964b5b2fdf79553da8d1a3c72b62faa Mon Sep 17 00:00:00 2001 From: Geliang Tang Date: Fri, 4 Mar 2022 11:36:27 -0800 Subject: [PATCH] mptcp: add the mibs for MP_FASTCLOSE This patch added two more mibs for MP_FASTCLOSE, MPTCP_MIB_MPFASTCLOSETX for the MP_FASTCLOSE sending and MPTCP_MIB_MPFASTCLOSERX for receiving. Also added a debug log for MP_FASTCLOSE receiving, printed out the recv_key of MP_FASTCLOSE in mptcp_parse_option to show that MP_RST is received. Signed-off-by: Geliang Tang Signed-off-by: Mat Martineau Signed-off-by: Jakub Kicinski --- net/mptcp/mib.c | 2 ++ net/mptcp/mib.h | 2 ++ net/mptcp/options.c | 3 +++ 3 files changed, 7 insertions(+) diff --git a/net/mptcp/mib.c b/net/mptcp/mib.c index 7558802a1435..975d17118bfe 100644 --- a/net/mptcp/mib.c +++ b/net/mptcp/mib.c @@ -48,6 +48,8 @@ static const struct snmp_mib mptcp_snmp_list[] = { SNMP_MIB_ITEM("MPPrioRx", MPTCP_MIB_MPPRIORX), SNMP_MIB_ITEM("MPFailTx", MPTCP_MIB_MPFAILTX), SNMP_MIB_ITEM("MPFailRx", MPTCP_MIB_MPFAILRX), + SNMP_MIB_ITEM("MPFastcloseTx", MPTCP_MIB_MPFASTCLOSETX), + SNMP_MIB_ITEM("MPFastcloseRx", MPTCP_MIB_MPFASTCLOSERX), SNMP_MIB_ITEM("RcvPruned", MPTCP_MIB_RCVPRUNED), SNMP_MIB_ITEM("SubflowStale", MPTCP_MIB_SUBFLOWSTALE), SNMP_MIB_ITEM("SubflowRecover", MPTCP_MIB_SUBFLOWRECOVER), diff --git a/net/mptcp/mib.h b/net/mptcp/mib.h index 2966fcb6548b..8206c65297e0 100644 --- a/net/mptcp/mib.h +++ b/net/mptcp/mib.h @@ -41,6 +41,8 @@ enum linux_mptcp_mib_field { MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */ MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */ MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */ + MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */ + MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */ MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */ MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */ MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */ diff --git a/net/mptcp/options.c b/net/mptcp/options.c index ac10a04ccd7c..c3697f06faf9 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -323,6 +323,7 @@ static void mptcp_parse_option(const struct sk_buff *skb, mp_opt->rcvr_key = get_unaligned_be64(ptr); ptr += 8; mp_opt->suboptions |= OPTION_MPTCP_FASTCLOSE; + pr_debug("MP_FASTCLOSE: recv_key=%llu", mp_opt->rcvr_key); break; case MPTCPOPT_RST: @@ -832,6 +833,7 @@ bool mptcp_established_options(struct sock *sk, struct sk_buff *skb, mptcp_established_options_mp_fail(sk, &opt_size, remaining, opts)) { *size += opt_size; remaining -= opt_size; + MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPFASTCLOSETX); } /* MP_RST can be used with MP_FASTCLOSE and MP_FAIL if there is room */ if (mptcp_established_options_rst(sk, skb, &opt_size, remaining, opts)) { @@ -1124,6 +1126,7 @@ bool mptcp_incoming_options(struct sock *sk, struct sk_buff *skb) msk->local_key == mp_opt.rcvr_key) { WRITE_ONCE(msk->rcv_fastclose, true); mptcp_schedule_work((struct sock *)msk); + MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPFASTCLOSERX); } if ((mp_opt.suboptions & OPTION_MPTCP_ADD_ADDR) &&