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authorSusant Sahani <susant@redhat.com>2014-08-14 23:06:11 +0530
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2014-08-14 19:48:57 -0400
commit209e9dcd7b2f23b68ff93bf20fad025bc03219ac (patch)
treeceff338a43dc61ee102275f891e36d334d27a0ea /src/core
parent1dbe0a6efda7b1d35957eab7e1d56a2c69d806d9 (diff)
socket: Add Support for TCP keep alive variables
The tcp keep alive variables now can be configured via conf parameter. Follwing variables are now supported by this patch. tcp_keepalive_intvl: The number of seconds between TCP keep-alive probes tcp_keepalive_probes: The maximum number of TCP keep-alive probes to send before giving up and killing the connection if no response is obtained from the other end. tcp_keepalive_time: The number of seconds a connection needs to be idle before TCP begins sending out keep-alive probes.
Diffstat (limited to 'src/core')
-rw-r--r--src/core/dbus-socket.c3
-rw-r--r--src/core/load-fragment-gperf.gperf.m43
-rw-r--r--src/core/socket.c36
-rw-r--r--src/core/socket.h3
4 files changed, 45 insertions, 0 deletions
diff --git a/src/core/dbus-socket.c b/src/core/dbus-socket.c
index ad135a1ac2..bdf111c9e3 100644
--- a/src/core/dbus-socket.c
+++ b/src/core/dbus-socket.c
@@ -97,6 +97,9 @@ const sd_bus_vtable bus_socket_vtable[] = {
SD_BUS_PROPERTY("DirectoryMode", "u", bus_property_get_mode, offsetof(Socket, directory_mode), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Accept", "b", bus_property_get_bool, offsetof(Socket, accept), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("KeepAlive", "b", bus_property_get_bool, offsetof(Socket, keep_alive), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("KeepAliveTime", "t", bus_property_get_usec, offsetof(Socket, keep_alive_time), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("KeepAliveInterval", "t", bus_property_get_usec, offsetof(Socket, keep_alive_interval), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("KeepAliveProbes", "u", bus_property_get_unsigned, offsetof(Socket, keep_alive_cnt), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Priority", "i", bus_property_get_int, offsetof(Socket, priority), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("ReceiveBuffer", "t", bus_property_get_size, offsetof(Socket, receive_buffer), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SendBuffer", "t", bus_property_get_size, offsetof(Socket, send_buffer), SD_BUS_VTABLE_PROPERTY_CONST),
diff --git a/src/core/load-fragment-gperf.gperf.m4 b/src/core/load-fragment-gperf.gperf.m4
index f4acdda22a..67bd0e5209 100644
--- a/src/core/load-fragment-gperf.gperf.m4
+++ b/src/core/load-fragment-gperf.gperf.m4
@@ -231,6 +231,9 @@ Socket.DirectoryMode, config_parse_mode, 0,
Socket.Accept, config_parse_bool, 0, offsetof(Socket, accept)
Socket.MaxConnections, config_parse_unsigned, 0, offsetof(Socket, max_connections)
Socket.KeepAlive, config_parse_bool, 0, offsetof(Socket, keep_alive)
+Socket.KeepAliveTime, config_parse_sec, 0, offsetof(Socket, keep_alive_time)
+Socket.KeepAliveInterval, config_parse_sec, 0, offsetof(Socket, keep_alive_interval)
+Socket.KeepAliveProbes, config_parse_unsigned, 0, offsetof(Socket, keep_alive_cnt)
Socket.NoDelay, config_parse_bool, 0, offsetof(Socket, no_delay)
Socket.Priority, config_parse_int, 0, offsetof(Socket, priority)
Socket.ReceiveBuffer, config_parse_iec_size, 0, offsetof(Socket, receive_buffer)
diff --git a/src/core/socket.c b/src/core/socket.c
index 5af15964ff..d6d9821f57 100644
--- a/src/core/socket.c
+++ b/src/core/socket.c
@@ -462,6 +462,7 @@ _const_ static const char* listen_lookup(int family, int type) {
}
static void socket_dump(Unit *u, FILE *f, const char *prefix) {
+ char time_string[FORMAT_TIMESPAN_MAX];
SocketExecCommand c;
Socket *s = SOCKET(u);
SocketPort *p;
@@ -595,6 +596,23 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) {
prefix, strna(s->user),
prefix, strna(s->group));
+ if(s->keep_alive_time)
+ fprintf(f,
+ "%sKeepAliveTime: %s\n",
+ prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX,
+ s->keep_alive_time, USEC_PER_SEC));
+
+ if(s->keep_alive_interval)
+ fprintf(f,
+ "%sKeepAliveInterval: %s\n",
+ prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX,
+ s->keep_alive_interval, USEC_PER_SEC));
+
+ if(s->keep_alive_cnt)
+ fprintf(f,
+ "%sKeepAliveProbes: %u\n",
+ prefix, s->keep_alive_cnt);
+
LIST_FOREACH(port, p, s->ports) {
if (p->type == SOCKET_SOCKET) {
@@ -792,6 +810,24 @@ static void socket_apply_socket_options(Socket *s, int fd) {
log_warning_unit(UNIT(s)->id, "SO_KEEPALIVE failed: %m");
}
+ if (s->keep_alive_time) {
+ int value = s->keep_alive_time / USEC_PER_SEC;
+ if (setsockopt(fd, SOL_TCP, TCP_KEEPIDLE, &value, sizeof(value)) < 0)
+ log_warning_unit(UNIT(s)->id, "TCP_KEEPIDLE failed: %m");
+ }
+
+ if (s->keep_alive_interval) {
+ int value = s->keep_alive_interval / USEC_PER_SEC;
+ if (setsockopt(fd, SOL_TCP, TCP_KEEPINTVL, &value, sizeof(value)) < 0)
+ log_warning_unit(UNIT(s)->id, "TCP_KEEPINTVL failed: %m");
+ }
+
+ if (s->keep_alive_cnt) {
+ int value = s->keep_alive_cnt;
+ if (setsockopt(fd, SOL_SOCKET, TCP_KEEPCNT, &value, sizeof(value)) < 0)
+ log_warning_unit(UNIT(s)->id, "TCP_KEEPCNT failed: %m");
+ }
+
if (s->no_delay) {
int b = s->no_delay;
if (setsockopt(fd, SOL_TCP, TCP_NODELAY, &b, sizeof(b)) < 0)
diff --git a/src/core/socket.h b/src/core/socket.h
index 98396e7320..8871eb1ca3 100644
--- a/src/core/socket.h
+++ b/src/core/socket.h
@@ -101,7 +101,10 @@ struct Socket {
unsigned max_connections;
unsigned backlog;
+ unsigned keep_alive_cnt;
usec_t timeout_usec;
+ usec_t keep_alive_time;
+ usec_t keep_alive_interval;
ExecCommand* exec_command[_SOCKET_EXEC_COMMAND_MAX];
ExecContext exec_context;