diff options
| -rw-r--r-- | drivers/infiniband/core/multicast.c | 55 |
1 files changed, 45 insertions, 10 deletions
diff --git a/drivers/infiniband/core/multicast.c b/drivers/infiniband/core/multicast.c index 1bc1fe605282..107f170c57cd 100644 --- a/drivers/infiniband/core/multicast.c +++ b/drivers/infiniband/core/multicast.c @@ -73,11 +73,20 @@ struct mcast_device { }; enum mcast_state { - MCAST_IDLE, MCAST_JOINING, MCAST_MEMBER, + MCAST_ERROR, +}; + +enum mcast_group_state { + MCAST_IDLE, MCAST_BUSY, - MCAST_ERROR + MCAST_GROUP_ERROR, + MCAST_PKEY_EVENT +}; + +enum { + MCAST_INVALID_PKEY_INDEX = 0xFFFF }; struct mcast_member; @@ -93,9 +102,10 @@ struct mcast_group { struct mcast_member *last_join; int members[3]; atomic_t refcount; - enum mcast_state state; + enum mcast_group_state state; struct ib_sa_query *query; int query_id; + u16 pkey_index; }; struct mcast_member { @@ -378,9 +388,19 @@ static int fail_join(struct mcast_group *group, struct mcast_member *member, static void process_group_error(struct mcast_group *group) { struct mcast_member *member; - int ret; + int ret = 0; + u16 pkey_index; + + if (group->state == MCAST_PKEY_EVENT) + ret = ib_find_pkey(group->port->dev->device, + group->port->port_num, + be16_to_cpu(group->rec.pkey), &pkey_index); spin_lock_irq(&group->lock); + if (group->state == MCAST_PKEY_EVENT && !ret && + group->pkey_index == pkey_index) + goto out; + while (!list_empty(&group->active_list)) { member = list_entry(group->active_list.next, struct mcast_member, list); @@ -399,6 +419,7 @@ static void process_group_error(struct mcast_group *group) } group->rec.join_state = 0; +out: group->state = MCAST_BUSY; spin_unlock_irq(&group->lock); } @@ -415,9 +436,9 @@ static void mcast_work_handler(struct work_struct *work) retest: spin_lock_irq(&group->lock); while (!list_empty(&group->pending_list) || - (group->state == MCAST_ERROR)) { + (group->state != MCAST_BUSY)) { - if (group->state == MCAST_ERROR) { + if (group->state != MCAST_BUSY) { spin_unlock_irq(&group->lock); process_group_error(group); goto retest; @@ -494,12 +515,19 @@ static void join_handler(int status, struct ib_sa_mcmember_rec *rec, void *context) { struct mcast_group *group = context; + u16 pkey_index = MCAST_INVALID_PKEY_INDEX; if (status) process_join_error(group, status); else { + ib_find_pkey(group->port->dev->device, group->port->port_num, + be16_to_cpu(rec->pkey), &pkey_index); + spin_lock_irq(&group->port->lock); group->rec = *rec; + if (group->state == MCAST_BUSY && + group->pkey_index == MCAST_INVALID_PKEY_INDEX) + group->pkey_index = pkey_index; if (!memcmp(&mgid0, &group->rec.mgid, sizeof mgid0)) { rb_erase(&group->node, &group->port->table); mcast_insert(group->port, group, 1); @@ -539,6 +567,7 @@ static struct mcast_group *acquire_group(struct mcast_port *port, group->port = port; group->rec.mgid = *mgid; + group->pkey_index = MCAST_INVALID_PKEY_INDEX; INIT_LIST_HEAD(&group->pending_list); INIT_LIST_HEAD(&group->active_list); INIT_WORK(&group->work, mcast_work_handler); @@ -707,7 +736,8 @@ int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num, } EXPORT_SYMBOL(ib_init_ah_from_mcmember); -static void mcast_groups_lost(struct mcast_port *port) +static void mcast_groups_event(struct mcast_port *port, + enum mcast_group_state state) { struct mcast_group *group; struct rb_node *node; @@ -721,7 +751,8 @@ static void mcast_groups_lost(struct mcast_port *port) atomic_inc(&group->refcount); queue_work(mcast_wq, &group->work); } - group->state = MCAST_ERROR; + if (group->state != MCAST_GROUP_ERROR) + group->state = state; spin_unlock(&group->lock); } spin_unlock_irqrestore(&port->lock, flags); @@ -731,16 +762,20 @@ static void mcast_event_handler(struct ib_event_handler *handler, struct ib_event *event) { struct mcast_device *dev; + int index; dev = container_of(handler, struct mcast_device, event_handler); + index = event->element.port_num - dev->start_port; switch (event->event) { case IB_EVENT_PORT_ERR: case IB_EVENT_LID_CHANGE: case IB_EVENT_SM_CHANGE: case IB_EVENT_CLIENT_REREGISTER: - mcast_groups_lost(&dev->port[event->element.port_num - - dev->start_port]); + mcast_groups_event(&dev->port[index], MCAST_GROUP_ERROR); + break; + case IB_EVENT_PKEY_CHANGE: + mcast_groups_event(&dev->port[index], MCAST_PKEY_EVENT); break; default: break; |