From 7a343d4c46bc59fe617f968e996ce2fd67c5d179 Mon Sep 17 00:00:00 2001 From: Leonid Arsh Date: Thu, 23 Mar 2006 19:52:51 +0200 Subject: 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 Signed-off-by: Roland Dreier --- drivers/infiniband/ulp/ipoib/ipoib_ib.c | 42 +++++++++++++++++++++++---------- 1 file changed, 30 insertions(+), 12 deletions(-) (limited to 'drivers/infiniband/ulp/ipoib/ipoib_ib.c') diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c index f2be500f62c8..ed65202878d8 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c @@ -423,13 +423,33 @@ int ipoib_ib_dev_open(struct net_device *dev) 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 @@ int ipoib_ib_dev_stop(struct net_device *dev) 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 @@ void ipoib_ib_dev_flush(void *_dev) 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 @@ void ipoib_ib_dev_cleanup(struct net_device *dev) * 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; -- cgit v1.2.3