diff options
| -rw-r--r-- | Documentation/networking/ip-sysctl.rst | 12 | ||||
| -rw-r--r-- | net/sctp/sm_statefuns.c | 5 |
2 files changed, 12 insertions, 5 deletions
diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst index 8bff728b3a1e..b3fa522e4cd9 100644 --- a/Documentation/networking/ip-sysctl.rst +++ b/Documentation/networking/ip-sysctl.rst @@ -2835,10 +2835,14 @@ encap_port - INTEGER Default: 0 plpmtud_probe_interval - INTEGER - The time interval (in milliseconds) for sending PLPMTUD probe chunks. - These chunks are sent at the specified interval with a variable size - to probe the mtu of a given path between 2 endpoints. PLPMTUD will - be disabled when 0 is set, and other values for it must be >= 5000. + The time interval (in milliseconds) for the PLPMTUD probe timer, + which is configured to expire after this period to receive an + acknowledgment to a probe packet. This is also the time interval + between the probes for the current pmtu when the probe search + is done. + + PLPMTUD will be disabled when 0 is set, and other values for it + must be >= 5000. Default: 0 diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index d29b579da904..09a8f23ec709 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -1275,7 +1275,10 @@ enum sctp_disposition sctp_sf_backbeat_8_3(struct net *net, return SCTP_DISPOSITION_DISCARD; sctp_transport_pl_recv(link); - return SCTP_DISPOSITION_CONSUME; + if (link->pl.state == SCTP_PL_COMPLETE) + return SCTP_DISPOSITION_CONSUME; + + return sctp_sf_send_probe(net, ep, asoc, type, link, commands); } max_interval = link->hbinterval + link->rto; |