mptcp: fix error mibs accounting

The current accounting for MP_FAIL and FASTCLOSE is not very
accurate: both can be increased even when the related option is
not really sent. Move the accounting into the correct place.

Fixes: eb7f33654dc1 ("mptcp: add the mibs for MP_FAIL")
Fixes: 1e75629cb964 ("mptcp: add the mibs for MP_FASTCLOSE")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index be3b918..2a6351d 100644 (file)
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -765,6 +765,7 @@ static noinline bool mptcp_established_options_rst(struct sock *sk, struct sk_bu
        opts->suboptions |= OPTION_MPTCP_RST;
        opts->reset_transient = subflow->reset_transient;
        opts->reset_reason = subflow->reset_reason;
+       MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPRSTTX);
 
        return true;
 }
@@ -788,6 +789,7 @@ static bool mptcp_established_options_fastclose(struct sock *sk,
        opts->rcvr_key = msk->remote_key;
 
        pr_debug("FASTCLOSE key=%llu", opts->rcvr_key);
+       MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPFASTCLOSETX);
        return true;
 }
 
@@ -809,6 +811,7 @@ static bool mptcp_established_options_mp_fail(struct sock *sk,
        opts->fail_seq = subflow->map_seq;
 
        pr_debug("MP_FAIL fail_seq=%llu", opts->fail_seq);
+       MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPFAILTX);
 
        return true;
 }
@@ -833,13 +836,11 @@ 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)) {
                        *size += opt_size;
                        remaining -= opt_size;
-                       MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPRSTTX);
                }
                return true;
        }

diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 59a8522..91a62b5 100644 (file)
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -310,7 +310,6 @@ void mptcp_pm_mp_fail_received(struct sock *sk, u64 fail_seq)
                pr_debug("send MP_FAIL response and infinite map");
 
                subflow->send_mp_fail = 1;
-               MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPFAILTX);
                subflow->send_infinite_map = 1;
        } else if (!sock_flag(sk, SOCK_DEAD)) {
                pr_debug("MP_FAIL response received");

diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 8841e8c..50ad19a 100644 (file)
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -958,10 +958,8 @@ static enum mapping_status validate_data_csum(struct sock *ssk, struct sk_buff *
                                 subflow->map_data_csum);
        if (unlikely(csum)) {
                MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_DATACSUMERR);
-               if (subflow->mp_join || subflow->valid_csum_seen) {
+               if (subflow->mp_join || subflow->valid_csum_seen)
                        subflow->send_mp_fail = 1;
-                       MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_MPFAILTX);
-               }
                return subflow->mp_join ? MAPPING_INVALID : MAPPING_DUMMY;
        }