Mailing List Archive

Added the following two options:
--gue-port with adding and editing destinations for tunneling servers.
--gue with listing services.

Signed-off-by: Jacky Hu <hengqing.hu@gmail.com>
---
ipvsadm.c | 109 +++++++++++++++++++++++++++++++++++++---------
libipvs/ip_vs.h | 16 +++++++
libipvs/libipvs.c | 3 +-
3 files changed, 106 insertions(+), 22 deletions(-)

diff --git a/ipvsadm.c b/ipvsadm.c
index 0cb2b68..a3d77d1 100644
--- a/ipvsadm.c
+++ b/ipvsadm.c
@@ -187,7 +187,9 @@ static const char* cmdnames[] = {
#define OPT_MCAST_PORT 0x02000000
#define OPT_MCAST_TTL 0x04000000
#define OPT_SYNC_MAXLEN 0x08000000
-#define NUMBER_OF_OPT 28
+#define OPT_GUE_PORT 0x10000000
+#define OPT_GUE 0x20000000
+#define NUMBER_OF_OPT 30

static const char* optnames[] = {
"numeric",
@@ -218,6 +220,8 @@ static const char* optnames[] = {
"mcast-port",
"mcast-ttl",
"sync-maxlen",
+ "gue-port",
+ "gue",
};

/*
@@ -230,21 +234,21 @@ static const char* optnames[] = {
*/
static const char commands_v_options[NUMBER_OF_CMD][NUMBER_OF_OPT] =
{
- /* -n -c svc -s -p -M -r fwd -w -x -y -mc tot dmn -st -rt thr -pc srt sid -ex ops -pe -b grp port ttl size */
-/*ADD*/ {'x', 'x', '+', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', ' ', ' ', 'x', 'x', 'x', 'x'},
-/*EDIT*/ {'x', 'x', '+', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', ' ', ' ', 'x', 'x', 'x', 'x'},
-/*DEL*/ {'x', 'x', '+', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
-/*FLUSH*/ {'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
-/*LIST*/ {' ', '1', '1', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', '1', '1', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
-/*ADDSRV*/ {'x', 'x', '+', 'x', 'x', 'x', '+', ' ', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
-/*DELSRV*/ {'x', 'x', '+', 'x', 'x', 'x', '+', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
-/*EDITSRV*/ {'x', 'x', '+', 'x', 'x', 'x', '+', ' ', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
-/*TIMEOUT*/ {'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
-/*STARTD*/ {'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', 'x', 'x', 'x', 'x', ' ', ' ', ' ', ' '},
-/*STOPD*/ {'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
-/*RESTORE*/ {'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
-/*SAVE*/ {' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
-/*ZERO*/ {'x', 'x', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
+ /* -n -c svc -s -p -M -r fwd -w -x -y -mc tot dmn -st -rt thr -pc srt sid -ex ops -pe -b grp port ttl size gue-port gue */
+/*ADD*/ {'x', 'x', '+', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x'},
+/*EDIT*/ {'x', 'x', '+', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x'},
+/*DEL*/ {'x', 'x', '+', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
+/*FLUSH*/ {'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
+/*LIST*/ {' ', '1', '1', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', '1', '1', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' '},
+/*ADDSRV*/ {'x', 'x', '+', 'x', 'x', 'x', '+', ' ', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', 'x'},
+/*DELSRV*/ {'x', 'x', '+', 'x', 'x', 'x', '+', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
+/*EDITSRV*/ {'x', 'x', '+', 'x', 'x', 'x', '+', ' ', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', 'x'},
+/*TIMEOUT*/ {'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
+/*STARTD*/ {'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', 'x', 'x', 'x', 'x', ' ', ' ', ' ', ' ', 'x', 'x'},
+/*STOPD*/ {'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
+/*RESTORE*/ {'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
+/*SAVE*/ {' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
+/*ZERO*/ {'x', 'x', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'},
};

/* printing format flags */
@@ -257,6 +261,7 @@ static const char commands_v_options[NUMBER_OF_CMD][NUMBER_OF_OPT] =
#define FMT_PERSISTENTCONN 0x0020
#define FMT_NOSORT 0x0040
#define FMT_EXACT 0x0080
+#define FMT_GUE 0x0100

#define SERVICE_NONE 0x0000
#define SERVICE_ADDR 0x0001
@@ -300,6 +305,8 @@ enum {
TAG_MCAST_PORT,
TAG_MCAST_TTL,
TAG_SYNC_MAXLEN,
+ TAG_GUE_PORT,
+ TAG_GUE,
};

/* various parsing helpers & parsing functions */
@@ -419,6 +426,7 @@ parse_options(int argc, char **argv, struct ipvs_command_entry *ce,
unsigned int *options, unsigned int *format)
{
int c, parse;
+ u_int16_t gue_port;
poptContext context;
char *optarg = NULL, sched_flags_arg[128];
struct poptOption options_table[] = {
@@ -495,6 +503,9 @@ parse_options(int argc, char **argv, struct ipvs_command_entry *ce,
TAG_MCAST_TTL, NULL, NULL },
{ "sync-maxlen", '\0', POPT_ARG_STRING, &optarg,
TAG_SYNC_MAXLEN, NULL, NULL },
+ { "gue-port", '\0', POPT_ARG_STRING, &optarg, TAG_GUE_PORT,
+ NULL, NULL },
+ { "gue", '\0', POPT_ARG_NONE, NULL, TAG_GUE, NULL, NULL },
{ NULL, 0, 0, NULL, 0, NULL, NULL }
};

@@ -773,6 +784,23 @@ parse_options(int argc, char **argv, struct ipvs_command_entry *ce,
fail(2, "illegal sync-maxlen specified");
ce->daemon.sync_maxlen = parse;
break;
+ case TAG_GUE_PORT:
+ set_option(options, OPT_GUE_PORT);
+ parse = string_to_number(optarg, 1, 65535);
+ if (parse == -1)
+ fail(2, "illegal gue port specified");
+ gue_port = (u_int16_t) parse;
+ ce->dest.conn_flags = (
+ (gue_port & 0xFFFE) << 16 |
+ (gue_port & 1) << 14 |
+ IP_VS_CONN_F_GUE |
+ ce->dest.conn_flags
+ );
+ break;
+ case TAG_GUE:
+ set_option(options, OPT_GUE);
+ *format |= FMT_GUE;
+ break;
default:
fail(2, "invalid option `%s'",
poptBadOption(context, POPT_BADOPTION_NOALIAS));
@@ -847,6 +875,7 @@ static int process_options(int argc, char **argv, int reading_stdin)
struct ipvs_command_entry ce;
unsigned int options = OPT_NONE;
unsigned int format = FMT_NONE;
+ unsigned int fwd_method;
int result = 0;

memset(&ce, 0, sizeof(struct ipvs_command_entry));
@@ -883,6 +912,8 @@ static int process_options(int argc, char **argv, int reading_stdin)
if (ce.cmd == CMD_STARTDAEMON && strlen(ce.daemon.mcast_ifn) == 0)
strcpy(ce.daemon.mcast_ifn, DEF_MCAST_IFN);

+ fwd_method = ce.dest.conn_flags & IP_VS_CONN_F_FWD_MASK;
+
if (ce.cmd == CMD_ADDDEST || ce.cmd == CMD_EDITDEST) {
/*
* The destination port must be equal to the service port
@@ -890,15 +921,21 @@ static int process_options(int argc, char **argv, int reading_stdin)
* Don't worry about this if fwmark is used.
*/
if (!ce.svc.fwmark &&
- (ce.dest.conn_flags == IP_VS_CONN_F_TUNNEL
- || ce.dest.conn_flags == IP_VS_CONN_F_DROUTE))
+ (fwd_method == IP_VS_CONN_F_TUNNEL
+ || fwd_method == IP_VS_CONN_F_DROUTE))
ce.dest.port = ce.svc.port;

/* Tunneling allows different address family */
if (ce.dest.af != ce.svc.af &&
- ce.dest.conn_flags != IP_VS_CONN_F_TUNNEL)
+ fwd_method != IP_VS_CONN_F_TUNNEL)
fail(2, "Different address family is allowed only "
"for tunneling servers");
+
+ /* Only tunneling allows gue encapsulation */
+ if ((options & OPT_GUE_PORT) &&
+ fwd_method != IP_VS_CONN_F_TUNNEL)
+ fail(2,
+ "GUE encapsulation is allowed only for tunneling servers");
}

switch (ce.cmd) {
@@ -1301,6 +1338,7 @@ static void usage_exit(const char *program, const int exit_status)
" --gatewaying -g gatewaying (direct routing) (default)\n"
" --ipip -i ipip encapsulation (tunneling)\n"
" --masquerading -m masquerading (NAT)\n"
+ " --gue-port port enable gue encapsulation with destination port\n"
" --weight -w weight capacity of real server\n"
" --u-threshold -x uthreshold upper threshold of connections\n"
" --l-threshold -y lthreshold lower threshold of connections\n"
@@ -1312,6 +1350,7 @@ static void usage_exit(const char *program, const int exit_status)
" --exact expand numbers (display exact values)\n"
" --thresholds output of thresholds information\n"
" --persistent-conn output of persistent connection info\n"
+ " --gue output of gue encapsulation info (destination port)\n"
" --nosort disable sorting output of service/server entries\n"
" --sort does nothing, for backwards compatibility\n"
" --ops -o one-packet scheduling\n"
@@ -1548,6 +1587,14 @@ static inline char *fwd_name(unsigned flags)
return fwd;
}

+static inline u_int16_t fwd_gue_port(unsigned int flags)
+{
+ u_int16_t gue_port;
+
+ gue_port = ((flags >> 16) & 0xFFFE) | ((flags >> 14) & 1);
+ return gue_port;
+}
+
static inline char *fwd_switch(unsigned flags)
{
char *swt = NULL;
@@ -1641,6 +1688,9 @@ static void print_title(unsigned int format)
" -> RemoteAddress:Port\n",
"Prot LocalAddress:Port",
"Weight", "PersistConn", "ActiveConn", "InActConn");
+ else if ((format & FMT_GUE))
+ printf("Prot LocalAddress:Port Scheduler Flags\n"
+ " -> RemoteAddress:Port Forward GUE Weight ActiveConn InActConn\n");
else if (!(format & FMT_RULE))
printf("Prot LocalAddress:Port Scheduler Flags\n"
" -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n");
@@ -1778,8 +1828,20 @@ print_service_entry(ipvs_service_entry_t *se, unsigned int format)
dname[28] = '\0';

if (format & FMT_RULE) {
- printf("-a %s -r %s %s -w %d\n", svc_name, dname,
- fwd_switch(e->conn_flags), e->weight);
+ if (e->conn_flags & IP_VS_CONN_F_GUE) {
+ printf("-a %s -r %s %s -w %d --gue-port %d\n",
+ svc_name,
+ dname,
+ fwd_switch(e->conn_flags),
+ e->weight,
+ fwd_gue_port(e->conn_flags));
+ } else {
+ printf("-a %s -r %s %s -w %d\n",
+ svc_name,
+ dname,
+ fwd_switch(e->conn_flags),
+ e->weight);
+ }
} else if (format & FMT_STATS) {
printf(" -> %-28s", dname);
print_largenum(e->stats64.conns, format);
@@ -1804,6 +1866,11 @@ print_service_entry(ipvs_service_entry_t *se, unsigned int format)
printf(" -> %-28s %-9u %-11u %-10u %-10u\n", dname,
e->weight, e->persistconns,
e->activeconns, e->inactconns);
+ } else if (format & FMT_GUE) {
+ printf(" -> %-28s %-7s %-5d %-6d %-10u %-10u\n",
+ dname, fwd_name(e->conn_flags),
+ fwd_gue_port(e->conn_flags),
+ e->weight, e->activeconns, e->inactconns);
} else
printf(" -> %-28s %-7s %-6d %-10u %-10u\n",
dname, fwd_name(e->conn_flags),
diff --git a/libipvs/ip_vs.h b/libipvs/ip_vs.h
index ad0141c..6c7f6ee 100644
--- a/libipvs/ip_vs.h
+++ b/libipvs/ip_vs.h
@@ -101,6 +101,22 @@
#define IP_VS_CONN_F_TEMPLATE 0x1000 /* template, not connection */
#define IP_VS_CONN_F_ONE_PACKET 0x2000 /* forward only one packet */

+/* tunneling with gue */
+#define IP_VS_CONN_F_GUE 0x0008
+
+/* gue destination port bit 0 */
+#define IP_VS_CONN_F_GUE_PORT_LSB 0x4000
+
+/* gue destination port bit 1-15 */
+#define IP_VS_CONN_F_GUE_PORT_MSB 0xFFFFE0000
+
+/* Connection flags from destination that can be changed by user space */
+#define IP_VS_CONN_F_DEST_MASK (IP_VS_CONN_F_FWD_MASK | \
+ IP_VS_CONN_F_GUE | \
+ IP_VS_CONN_F_GUE_PORT_MSB | \
+ IP_VS_CONN_F_GUE_PORT_LSB | \
+ 0)
+
#define IP_VS_SCHEDNAME_MAXLEN 16
#define IP_VS_PENAME_MAXLEN 16
#define IP_VS_IFNAME_MAXLEN 16
diff --git a/libipvs/libipvs.c b/libipvs/libipvs.c
index 9be7700..a2d0018 100644
--- a/libipvs/libipvs.c
+++ b/libipvs/libipvs.c
@@ -388,7 +388,8 @@ static int ipvs_nl_fill_dest_attr(struct nl_msg *msg, ipvs_dest_t *dst)
NLA_PUT_U16(msg, IPVS_DEST_ATTR_ADDR_FAMILY, dst->af);
NLA_PUT(msg, IPVS_DEST_ATTR_ADDR, sizeof(dst->addr), &(dst->addr));
NLA_PUT_U16(msg, IPVS_DEST_ATTR_PORT, dst->port);
- NLA_PUT_U32(msg, IPVS_DEST_ATTR_FWD_METHOD, dst->conn_flags & IP_VS_CONN_F_FWD_MASK);
+ NLA_PUT_U32(msg, IPVS_DEST_ATTR_FWD_METHOD,
+ dst->conn_flags & IP_VS_CONN_F_DEST_MASK);
NLA_PUT_U32(msg, IPVS_DEST_ATTR_WEIGHT, dst->weight);
NLA_PUT_U32(msg, IPVS_DEST_ATTR_U_THRESH, dst->u_threshold);
NLA_PUT_U32(msg, IPVS_DEST_ATTR_L_THRESH, dst->l_threshold);
--
2.21.0


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