[ofa-general] [PATCH v2] opensm: MFT tables are not set after non full member re-join

[Eli Dorfman (Voltaire)]

MFT tables are not set after non full member re-join

In case of non full member re-join MFT tables are not set.
No need to set or check non full member reference to mlid (port->mcm_list).
This list should be used only for full members for cleanup when port goes down.

A simple scenarion to reproduce this:
1. Full member creates group
2. Non-member join - MFT sent
3. Full member leave
	a. group is deleted but non member port has still reference to the MLID
4. Full member re-creates the group
5. Non member re-joins - MFT not sent to switches

Signed-off-by: Eli Dorfman <elid at voltaire.com>
---
 opensm/include/opensm/osm_sm.h         |    3 ++-
 opensm/opensm/osm_sa_mcmember_record.c |    6 +++---
 opensm/opensm/osm_sm.c                 |   22 +++++++++++++++++++++-
 3 files changed, 26 insertions(+), 5 deletions(-)

diff --git a/opensm/include/opensm/osm_sm.h b/opensm/include/opensm/osm_sm.h
index cc8321d..1a8a577 100644
--- a/opensm/include/opensm/osm_sm.h
+++ b/opensm/include/opensm/osm_sm.h
@@ -539,7 +539,8 @@ osm_resp_send(IN osm_sm_t * sm,
 ib_api_status_t
 osm_sm_mcgrp_join(IN osm_sm_t * const p_sm,
 		  IN const ib_net16_t mlid,
-		  IN const ib_net64_t port_guid);
+		  IN const ib_net64_t port_guid,
+				  IN uint8_t scope_state);
 /*
 * PARAMETERS
 *	p_sm
diff --git a/opensm/opensm/osm_sa_mcmember_record.c b/opensm/opensm/osm_sa_mcmember_record.c
index 5543221..fe29dd6 100644
--- a/opensm/opensm/osm_sa_mcmember_record.c
+++ b/opensm/opensm/osm_sa_mcmember_record.c
@@ -1039,7 +1039,7 @@ static void mcmr_rcv_leave_mgrp(IN osm_sa_t * sa, IN osm_madw_t * p_madw)
 	if (!p_mgrp) {
 		char gid_str[INET6_ADDRSTRLEN];
 		CL_PLOCK_RELEASE(sa->p_lock);
-		OSM_LOG(sa->p_log, OSM_LOG_DEBUG,
+		OSM_LOG(sa->p_log, OSM_LOG_INFO,
 			"Failed since multicast group %s not present\n",
 			inet_ntop(AF_INET6, p_recvd_mcmember_rec->mgid.raw,
 				  gid_str, sizeof gid_str));
@@ -1309,8 +1309,8 @@ static void mcmr_rcv_join_mgrp(IN osm_sa_t * sa, IN osm_madw_t * p_madw)
 
 	/* do the actual routing (actually schedule the update) */
 	status = osm_sm_mcgrp_join(sa->sm, mlid,
-				   p_recvd_mcmember_rec->port_gid.unicast.
-				   interface_id);
+							   p_recvd_mcmember_rec->port_gid.unicast.interface_id,
+							   p_recvd_mcmember_rec->scope_state);
 
 	if (status != IB_SUCCESS) {
 		OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 1B14: "
diff --git a/opensm/opensm/osm_sm.c b/opensm/opensm/osm_sm.c
index daa60ff..b334d39 100644
--- a/opensm/opensm/osm_sm.c
+++ b/opensm/opensm/osm_sm.c
@@ -468,7 +468,7 @@ static ib_api_status_t sm_mgrp_process(IN osm_sm_t * p_sm,
 /**********************************************************************
  **********************************************************************/
 ib_api_status_t osm_sm_mcgrp_join(IN osm_sm_t * p_sm, IN const ib_net16_t mlid,
-				  IN const ib_net64_t port_guid)
+				  IN const ib_net64_t port_guid, IN uint8_t scope_state)
 {
 	osm_mgrp_t *p_mgrp;
 	osm_port_t *p_port;
@@ -515,6 +515,26 @@ ib_api_status_t osm_sm_mcgrp_join(IN osm_sm_t * p_sm, IN const ib_net16_t mlid,
 		goto Exit;
 	}
 
+	/* if there was no change from the last time
+	 * we processed the group we can skip doing anything
+	 */
+	if (p_mgrp->last_change_id == p_mgrp->last_tree_id) {
+		CL_PLOCK_RELEASE(p_sm->p_lock);
+		OSM_LOG(p_sm->p_log, OSM_LOG_VERBOSE,
+			"Skip processing mgrp with lid:0x%X last change id:%u\n",
+			cl_ntoh16(mlid), p_mgrp->last_change_id);
+		goto Exit;
+	} else {
+		OSM_LOG(p_sm->p_log, OSM_LOG_DEBUG,
+			"processing mgrp with lid:0x%X port: 0x%016" PRIx64 " last change id:%u tree id:%u\n",
+			cl_ntoh16(mlid), cl_ntoh64(port_guid), 
+			p_mgrp->last_change_id, p_mgrp->last_tree_id);
+	}
+
+	/* add mgrp only to FULL member port. used for cleanup when port goes down */
+	if (!(scope_state & IB_JOIN_STATE_FULL))
+		goto MgrpProcess;
+
 	/*
 	 * Check if the object (according to mlid) already exists on this port.
 	 * If it does - then no need to update it again, and no need to
@@ -543,6 +563,7 @@ ib_api_status_t osm_sm_mcgrp_join(IN osm_sm_t * p_sm, IN const ib_net16_t mlid,
 		goto Exit;
 	}
 
+MgrpProcess:
 	status = sm_mgrp_process(p_sm, p_mgrp);
 	CL_PLOCK_RELEASE(p_sm->p_lock);
 
-- 
1.5.3.6