Lets you set TTL for fence_xvm from the command line (or cluster.conf)
-- Lon
Index: fence_xvm.c
===================================================================
RCS file: /cvs/cluster/cluster/fence/agents/xvm/fence_xvm.c,v
retrieving revision 1.7
diff -u -r1.7 fence_xvm.c
--- fence_xvm.c 17 Oct 2007 18:27:27 -0000 1.7
+++ fence_xvm.c 22 Jan 2008 19:56:56 -0000
@@ -155,7 +155,8 @@
mc_sock = ipv4_send_sk(ipa->ipa_address, args->addr,
args->port,
(struct sockaddr *)&tgt4,
- sizeof(struct sockaddr_in));
+ sizeof(struct sockaddr_in),
+ args->ttl);
tgt = (struct sockaddr *)&tgt4;
tgt_len = sizeof(tgt4);
@@ -163,7 +164,8 @@
mc_sock = ipv6_send_sk(ipa->ipa_address, args->addr,
args->port,
(struct sockaddr *)&tgt6,
- sizeof(struct sockaddr_in6));
+ sizeof(struct sockaddr_in6),
+ args->ttl);
tgt = (struct sockaddr *)&tgt6;
tgt_len = sizeof(tgt6);
} else {
@@ -317,7 +319,7 @@
main(int argc, char **argv)
{
fence_xvm_args_t args;
- char *my_options = "di:a:p:r:C:c:k:H:uo:t:?hV";
+ char *my_options = "di:a:p:T:r:C:c:k:H:uo:t:?hV";
args_init(&args);
if (argc == 1) {
Index: mcast.c
===================================================================
RCS file: /cvs/cluster/cluster/fence/agents/xvm/mcast.c,v
retrieving revision 1.3
diff -u -r1.3 mcast.c
--- mcast.c 17 Oct 2007 18:27:27 -0000 1.3
+++ mcast.c 22 Jan 2008 19:56:56 -0000
@@ -111,7 +111,7 @@
*/
int
ipv4_send_sk(char *send_addr, char *addr, int port, struct sockaddr
*tgt,
- socklen_t tgt_len)
+ socklen_t tgt_len, int ttl)
{
int val;
struct ip_mreq mreq;
@@ -182,8 +182,8 @@
/*
* set time to live to 2 hops.
*/
- dbg_printf(4, "Setting TTL to 2 for fd%d\n", sock);
- val = 2;
+ dbg_printf(4, "Setting TTL to %d for fd%d\n", ttl, sock);
+ val = ttl;
if (setsockopt(sock, SOL_IP, IP_MULTICAST_TTL, &val,
sizeof(val)))
printf("warning: setting TTL failed %s\n", strerror(errno));
@@ -278,7 +278,7 @@
*/
int
ipv6_send_sk(char *send_addr, char *addr, int port, struct sockaddr
*tgt,
- socklen_t tgt_len)
+ socklen_t tgt_len, int ttl)
{
int val;
struct ipv6_mreq mreq;
@@ -361,7 +361,7 @@
/*
* set time to live to 2 hops.
*/
- val = 2;
+ val = ttl;
if (setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &val,
sizeof(val)))
printf("warning: setting TTL failed %s\n", strerror(errno));
Index: mcast.h
===================================================================
RCS file: /cvs/cluster/cluster/fence/agents/xvm/mcast.h,v
retrieving revision 1.1
diff -u -r1.1 mcast.h
--- mcast.h 5 Oct 2006 16:11:36 -0000 1.1
+++ mcast.h 22 Jan 2008 19:56:56 -0000
@@ -24,9 +24,11 @@
int ipv4_recv_sk(char *addr, int port);
int ipv4_send_sk(char *src_addr, char *addr, int port,
- struct sockaddr *src, socklen_t slen);
+ struct sockaddr *src, socklen_t slen,
+ int ttl);
int ipv6_recv_sk(char *addr, int port);
int ipv6_send_sk(char *src_addr, char *addr, int port,
- struct sockaddr *src, socklen_t slen);
+ struct sockaddr *src, socklen_t slen,
+ int ttl);
#endif
Index: options.c
===================================================================
RCS file: /cvs/cluster/cluster/fence/agents/xvm/options.c,v
retrieving revision 1.6
diff -u -r1.6 options.c
--- options.c 7 Jan 2008 05:52:28 -0000 1.6
+++ options.c 22 Jan 2008 19:56:57 -0000
@@ -96,6 +96,17 @@
static inline void
+assign_ttl(fence_xvm_args_t *args, struct arg_info *arg, char *value)
+{
+ int ttl;
+ ttl = atoi(value);
+ if (ttl < 1 || ttl > 255)
+ ttl = 2;
+ args->ttl = ttl;
+}
+
+
+static inline void
assign_port(fence_xvm_args_t *args, struct arg_info *arg, char *value)
{
args->port = atoi(value);
@@ -260,6 +271,7 @@
}
+
/** ALL valid command line and stdin arguments for this fencing agent
*/
static struct arg_info _arg_info[] = {
{ '\xff', NULL, "agent",
@@ -286,6 +298,10 @@
"Multicast address (default=225.0.0.12 / ff02::3:1)",
assign_address },
+ { 'T', "-T <ttl>", "multicast_ttl",
+ "Multicast time-to-live (in hops; default=2)",
+ assign_ttl },
+
{ 'p', "-p <port>", "port",
"IP port (default=1229)",
assign_port },
@@ -399,6 +415,7 @@
args->retr_time = 20;
args->flags = 0;
args->debug = 0;
+ args->ttl = 2;
}
Index: options.h
===================================================================
RCS file: /cvs/cluster/cluster/fence/agents/xvm/options.h,v
retrieving revision 1.3
diff -u -r1.3 options.h
--- options.h 26 Jun 2007 17:23:41 -0000 1.3
+++ options.h 22 Jan 2008 19:56:57 -0000
@@ -45,6 +45,7 @@
int retr_time;
arg_flags_t flags;
int debug;
+ int ttl;
} fence_xvm_args_t;
/* Private structure for commandline / stdin fencing args */
--
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