diff options
Diffstat (limited to 'usr/src/uts/common/inet/tcp.h')
| -rw-r--r-- | usr/src/uts/common/inet/tcp.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/usr/src/uts/common/inet/tcp.h b/usr/src/uts/common/inet/tcp.h index 460f183884..d95f2559c6 100644 --- a/usr/src/uts/common/inet/tcp.h +++ b/usr/src/uts/common/inet/tcp.h @@ -21,6 +21,7 @@ /* * Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2011, Joyent, Inc. All rights reserved. + * Copyright (c) 2011 Nexenta Systems, Inc. All rights reserved. */ /* Copyright (c) 1990 Mentat Inc. */ @@ -334,11 +335,26 @@ typedef struct tcp_s { } tcp_conn; uint32_t tcp_syn_rcvd_timeout; /* How many SYN_RCVD timeout in q0 */ - /* TCP Keepalive Timer members */ + /* + * TCP Keepalive Timer members. + * All keepalive timer intervals are in milliseconds. + */ int32_t tcp_ka_last_intrvl; /* Last probe interval */ timeout_id_t tcp_ka_tid; /* Keepalive timer ID */ uint32_t tcp_ka_interval; /* Keepalive interval */ + + /* + * TCP connection is terminated if we don't hear back from the peer + * for tcp_ka_abort_thres milliseconds after the first keepalive probe. + * tcp_ka_rinterval is the interval in milliseconds between successive + * keepalive probes. tcp_ka_cnt is the number of keepalive probes to + * be sent before terminating the connection, if we don't hear back from + * peer. + * tcp_ka_abort_thres = tcp_ka_rinterval * tcp_ka_cnt + */ + uint32_t tcp_ka_rinterval; /* keepalive retransmit interval */ uint32_t tcp_ka_abort_thres; /* Keepalive abort threshold */ + uint32_t tcp_ka_cnt; /* count of keepalive probes */ int32_t tcp_client_errno; /* How the client screwed up */ |