sctp: fix the transport error_count check

[ Upstream commit a1794de8b92ea6bc2037f445b296814ac826693e ]

As the annotation says in sctp_do_8_2_transport_strike():

  "If the transport error count is greater than the pf_retrans
   threshold, and less than pathmaxrtx ..."

It should be transport->error_count checked with pathmaxrxt,
instead of asoc->pf_retrans.

Fixes: 5aa93bcf66f4 ("sctp: Implement quick failover draft from tsvwg")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 3131b41..28adac3 100644 (file)
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -561,7 +561,7 @@ static void sctp_do_8_2_transport_strike(struct sctp_cmd_seq *commands,
         */
        if (net->sctp.pf_enable &&
           (transport->state == SCTP_ACTIVE) &&
-          (asoc->pf_retrans < transport->pathmaxrxt) &&
+          (transport->error_count < transport->pathmaxrxt) &&
           (transport->error_count > asoc->pf_retrans)) {
 
                sctp_assoc_control_transport(asoc, transport,