--- /dev/null
+Bottom: 30326a5093b7b177c8d7612eba401d4999793f71
+Top: 1eb335b444d6a59de8b26ecc43e9a756580e9a86
+Author: sean.hefty@intel.com <sean.hefty@intel.com>
+Date: 2010-11-09 18:02:44 -0800
+
+Refresh of ibacm-allow-disabling-for-loop
+
+---
+
+diff --git a/acm_opts.cfg b/acm_opts.cfg
+index 3dbb0c6..61872ef 100644
+--- a/acm_opts.cfg
++++ b/acm_opts.cfg
+@@ -41,6 +41,13 @@ addr_prot acm
+ \r
+ route_prot sa\r
+ \r
++# disable_loopback:\r
++# If non-zero, the ACM will fail resolution requests for local destination\r
++# addresses. This works around issues with HCAs that do not copy\r
++# multicast traffic back to the QP that issues the send.\r
++\r
++disable_loopback 0\r
++\r
+ # server_port:\r
+ # TCP port number that the server listens on.\r
+ # If this value is changed, then a corresponding change is required for\r
+diff --git a/src/acm.c b/src/acm.c
+index 820365c..ffd1315 100644
+--- a/src/acm.c
++++ b/src/acm.c
+@@ -200,6 +200,7 @@ static char log_file[128] = "stdout";
+ static int log_level = 0;
+ static enum acm_addr_prot addr_prot = ACM_ADDR_PROT_ACM;
+ static enum acm_route_prot route_prot = ACM_ROUTE_PROT_ACM;
++static int disable_loopback = 0;
+ static short server_port = 6125;
+ static int timeout = 2000;
+ static int retries = 15;
+@@ -1700,7 +1701,6 @@ acm_get_ep(struct acm_ep_addr_data *data)
+ }
+ }
+
+- acm_log_addr(0, "acm_get_ep: could not find ", data->type, data->info.addr);
+ return NULL;
+ }
+
+@@ -1726,7 +1726,8 @@ acm_svr_query(struct acm_client *client, struct acm_resolve_msg *msg)
+
+ ep = acm_get_ep(&msg->data[0]);
+ if (!ep) {
+- acm_log(0, "could not find local end point\n");
++ acm_log_addr(0, "acm_svr_query: could not find ",
++ data->type, data->info.addr);
+ status = ACM_STATUS_ESRCADDR;
+ goto resp;
+ }
+@@ -1947,10 +1948,22 @@ acm_svr_resolve(struct acm_client *client, struct acm_resolve_msg *msg)
+ return acm_client_resolve_resp(client, msg, NULL, status);
+ }
+
++ if (disable_loopback) {
++ acm_log_addr(2, "acm_svr_resolve: dest loopback? ",
++ daddr->type, daddr->info.addr);
++ ep = acm_get_ep(daddr);
++ if (ep) {
++ acm_log(2, "dest is local, and loopback is disabled");
++ return acm_client_resolve_resp(client, msg, NULL,
++ ACM_STATUS_EDSTADDR);
++ }
++ }
++
+ acm_log_addr(2, "acm_svr_resolve: source ", saddr->type, saddr->info.addr);
+ ep = acm_get_ep(saddr);
+ if (!ep) {
+- acm_log(0, "unknown local end point\n");
++ acm_log_addr(0, "acm_svr_resolve: could not find ",
++ data->type, data->info.addr);
+ return acm_client_resolve_resp(client, msg, NULL, ACM_STATUS_ESRCADDR);
+ }
+
+@@ -2562,6 +2575,8 @@ static void acm_set_options(void)
+ addr_prot = acm_convert_addr_prot(value);
+ else if (!stricmp("route_prot", opt))
+ route_prot = acm_convert_route_prot(value);
++ else if (!stricmp("disable_loopback", opt))
++ disable_loopback = atoi(value);
+ else if (!stricmp("server_port", opt))
+ server_port = (short) atoi(value);
+ else if (!stricmp("timeout", opt))
+@@ -2590,6 +2605,7 @@ static void acm_log_options(void)
+ acm_log(0, "log level %d\n", log_level);
+ acm_log(0, "address resolution %d\n", addr_prot);
+ acm_log(0, "route resolution %d\n", route_prot);
++ acm_log(0, "disable loopback %d\n", disable_loopback);
+ acm_log(0, "server_port %d\n", server_port);
+ acm_log(0, "timeout %d ms\n", timeout);
+ acm_log(0, "retries %d\n", retries);
+diff --git a/src/acme.c b/src/acme.c
+index e03679f..6080b46 100644
+--- a/src/acme.c
++++ b/src/acme.c
+@@ -121,6 +121,13 @@ static void gen_opts_temp(FILE *f)
+ fprintf(f, "\n");
+ fprintf(f, "route_prot sa\n");
+ fprintf(f, "\n");
++ fprintf(f, "# disable_loopback:\n");
++ fprintf(f, "# If non-zero, the ACM will fail resolution requests for local destination\n");
++ fprintf(f, "# addresses. This works around issues with HCAs that do not copy\n");
++ fprintf(f, "# multicast traffic back to the QP that issues the send.\n");
++ fprintf(f, "\n");
++ fprintf(f, "disable_loopback 0\n");
++ fprintf(f, "\n");
+ fprintf(f, "# server_port:\n");
+ fprintf(f, "# TCP port number that the server listens on.\n");
+ fprintf(f, "# If this value is changed, then a corresponding change is required for\n");