[openib-general] [PATCH] OpenSM: Support configurable SL per partition

[Hal Rosenstock]

OpenSM: Support configurable SL per partition

Signed-off-by: Sasha Khapyorsky <sashak at voltaire.com>
Signed-off-by: Hal Rosenstock <halr at voltaire.com>

Index: include/opensm/osm_partition.h
===================================================================
--- include/opensm/osm_partition.h	(revision 8470)
+++ include/opensm/osm_partition.h	(working copy)
@@ -102,6 +102,7 @@ typedef struct _osm_prtn
 {
 	cl_map_item_t	map_item;
 	uint16_t	pkey;
+	uint8_t		sl; 
 	cl_map_t	full_guid_tbl;
 	cl_map_t	part_guid_tbl;
 	char		name[32];
@@ -114,6 +115,9 @@ typedef struct _osm_prtn
 *	pkey
 *		The IBA defined P_KEY of this Partition.
 *
+*	sl
+*		The Service Level (SL) associated with this Partiton.
+*
 *	port_guid_tbl
 *		Container of pointers to all Port objects in the Partition,
 *		indexed by port GUID.
Index: opensm/osm_prtn.c
===================================================================
--- opensm/osm_prtn.c	(revision 8470)
+++ opensm/osm_prtn.c	(working copy)
@@ -79,6 +79,7 @@ osm_prtn_t* osm_prtn_new(
 
 	memset(p, 0, sizeof(*p));
 	p->pkey = pkey;
+	p->sl = OSM_DEFAULT_SL;
 	cl_map_construct(&p->full_guid_tbl);
 	cl_map_init(&p->full_guid_tbl, 32);
 	cl_map_construct(&p->part_guid_tbl);
@@ -220,7 +221,7 @@ ib_api_status_t osm_prtn_add_mcgroup(osm
 	mc_rec.pkey = pkey;
 	mc_rec.rate = rate ? rate : 0x3; /* 10Gb/sec */
 	mc_rec.pkt_life = OSM_DEFAULT_SUBNET_TIMEOUT;
-	mc_rec.sl_flow_hop = OSM_DEFAULT_SL << 28;
+	mc_rec.sl_flow_hop = ib_member_set_sl_flow_hop(p->sl, 0, 0);
 	/* Note: scope needs to be consistent with MGID */
 	mc_rec.scope_state = 0x21;
 
Index: opensm/osm_prtn_config.c
===================================================================
--- opensm/osm_prtn_config.c	(revision 8470)
+++ opensm/osm_prtn_config.c	(working copy)
@@ -54,6 +54,7 @@
 #include <ctype.h>
 
 #include <iba/ib_types.h>
+#include <opensm/osm_base.h>
 #include <opensm/osm_partition.h>
 #include <opensm/osm_subnet.h>
 #include <opensm/osm_log.h>
@@ -82,7 +83,7 @@ struct part_conf {
 	osm_log_t  *p_log;
 	osm_subn_t *p_subn;
 	osm_prtn_t *p_prtn;
-	unsigned    is_ipoib, mtu, rate;
+	unsigned    is_ipoib, mtu, rate, sl;
 };
 
 
@@ -122,6 +123,16 @@ static int partition_create(unsigned lin
 	if (!conf->p_prtn)
 		return -1;
 
+	if (conf->p_subn->opt.no_qos) {
+		if (conf->sl != OSM_DEFAULT_SL) {
+			osm_log(conf->p_log, OSM_LOG_ERROR,
+				"partition_create: Overriding SL %d to default SL %d on partition %s as QoS not enabled\n",
+				conf->sl, OSM_DEFAULT_SL, name);
+		  conf->sl = OSM_DEFAULT_SL;
+		}
+	}
+	conf->p_prtn->sl = conf->sl & 0xf;
+
 	if (conf->is_ipoib)
 		osm_prtn_add_mcgroup(conf->p_log, conf->p_subn, conf->p_prtn,
 			     conf->is_ipoib, conf->rate, conf->mtu);
@@ -145,6 +156,15 @@ static int partition_add_flag(unsigned l
 			PARSEWARN(conf->p_log, lineno,
 				"flag \'rate\' requires valid value"
 				" - skipped.\n");
+	} else if (!strncmp(flag, "sl", len)) {
+		unsigned sl;
+
+		if (!val || (sl = strtoul(val, NULL, 0)) == 0 || sl > 15)
+			PARSEWARN(conf->p_log, lineno,
+				"flag \'sl\' requires valid value"
+				" - skipped.\n");
+		else
+			conf->sl = sl;
 	} else {
 		PARSEWARN(conf->p_log, lineno,
 			"unrecognized partition flag \'%s\'"
@@ -254,6 +274,8 @@ static struct part_conf *new_part_conf(o
 	conf->p_log = p_log;
 	conf->p_subn = p_subn;
 	conf->p_prtn = NULL;
+	conf->is_ipoib = 0;
+	conf->sl = OSM_DEFAULT_SL;
 	return conf;
 }
 
Index: doc/partition-config.txt
===================================================================
--- doc/partition-config.txt	(revision 8470)
+++ doc/partition-config.txt	(working copy)
@@ -46,6 +46,7 @@ ipoib      - indicates that this partiti
              result IPoIB capable MC group will be created.
 rate=<val> - specifies rate for this IPoIB MC group (default is 3 (10GBps))
 mtu=<val>  - specifies MTU for this IPoIB MC group (default is 4 (2048))
+sl=<val>   - specifies SL for this IPoIB MC group (default is 0)
 
 Note that values for 'rate' and 'mtu' should be specified as defined in
 IBTA specification (for example mtu=4 for 2048).