IPoIB: P_Key change event handling
This patch causes the network interface to respond to P_Key change
events correctly. As a result, you'll see a child interface in the
"RUNNING" state (netif_carrier_on()) only when the corresponding P_Key
is configured by the SM. When SM removes a P_Key, the "RUNNING" state
will be disabled for the corresponding network interface. To
implement this, I added IB_EVENT_PKEY_CHANGE event handling. To
prevent flushing the device before the device is open by the "delay
open" mechanism, I added an additional device flag called
IPOIB_FLAG_INITIALIZED.
This also prevents the child network interface from trying to join to
multicast groups until the PKEY is configured. We used to get error
messages like:
ib0.f2f2: couldn't attach QP to multicast group ff12:401b:f2f2:0:0:0:ffff:ffff
in this case. To fix this, I just check IPOIB_FLAG_OPER_UP flag in
ipoib_set_mcast_list().
Signed-off-by: Leonid Arsh <leonida@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index 1251f86..b640107 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -72,13 +72,14 @@
IPOIB_MAX_MCAST_QUEUE = 3,
IPOIB_FLAG_OPER_UP = 0,
- IPOIB_FLAG_ADMIN_UP = 1,
- IPOIB_PKEY_ASSIGNED = 2,
- IPOIB_PKEY_STOP = 3,
- IPOIB_FLAG_SUBINTERFACE = 4,
- IPOIB_MCAST_RUN = 5,
- IPOIB_STOP_REAPER = 6,
- IPOIB_MCAST_STARTED = 7,
+ IPOIB_FLAG_INITIALIZED = 1,
+ IPOIB_FLAG_ADMIN_UP = 2,
+ IPOIB_PKEY_ASSIGNED = 3,
+ IPOIB_PKEY_STOP = 4,
+ IPOIB_FLAG_SUBINTERFACE = 5,
+ IPOIB_MCAST_RUN = 6,
+ IPOIB_STOP_REAPER = 7,
+ IPOIB_MCAST_STARTED = 8,
IPOIB_MAX_BACKOFF_SECONDS = 16,
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
index f2be500..ed65202 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -423,13 +423,33 @@
clear_bit(IPOIB_STOP_REAPER, &priv->flags);
queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task, HZ);
+ set_bit(IPOIB_FLAG_INITIALIZED, &priv->flags);
+
return 0;
}
+static void ipoib_pkey_dev_check_presence(struct net_device *dev)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(dev);
+ u16 pkey_index = 0;
+
+ if (ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index))
+ clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
+ else
+ set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
+}
+
int ipoib_ib_dev_up(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
+ ipoib_pkey_dev_check_presence(dev);
+
+ if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) {
+ ipoib_dbg(priv, "PKEY is not assigned.\n");
+ return 0;
+ }
+
set_bit(IPOIB_FLAG_OPER_UP, &priv->flags);
return ipoib_mcast_start_thread(dev);
@@ -483,6 +503,8 @@
struct ipoib_tx_buf *tx_req;
int i;
+ clear_bit(IPOIB_FLAG_INITIALIZED, &priv->flags);
+
/*
* Move our QP to the error state and then reinitialize in
* when all work requests have completed or have been flushed.
@@ -587,8 +609,15 @@
struct net_device *dev = (struct net_device *)_dev;
struct ipoib_dev_priv *priv = netdev_priv(dev), *cpriv;
- if (!test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
+ if (!test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags) ) {
+ ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_INITIALIZED not set.\n");
return;
+ }
+
+ if (!test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) {
+ ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_ADMIN_UP not set.\n");
+ return;
+ }
ipoib_dbg(priv, "flushing\n");
@@ -632,17 +661,6 @@
* change async notification is available.
*/
-static void ipoib_pkey_dev_check_presence(struct net_device *dev)
-{
- struct ipoib_dev_priv *priv = netdev_priv(dev);
- u16 pkey_index = 0;
-
- if (ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index))
- clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
- else
- set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
-}
-
void ipoib_pkey_poll(void *dev_ptr)
{
struct net_device *dev = dev_ptr;
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 37da8d3..53a32f6 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -736,6 +736,11 @@
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
+ if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) {
+ ipoib_dbg(priv, "IPOIB_FLAG_OPER_UP not set");
+ return;
+ }
+
queue_work(ipoib_workqueue, &priv->restart_task);
}
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
index a35b798..5f03880 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
@@ -252,6 +252,7 @@
container_of(handler, struct ipoib_dev_priv, event_handler);
if (record->event == IB_EVENT_PORT_ERR ||
+ record->event == IB_EVENT_PKEY_CHANGE ||
record->event == IB_EVENT_PORT_ACTIVE ||
record->event == IB_EVENT_LID_CHANGE ||
record->event == IB_EVENT_SM_CHANGE) {