UD mode requires MTU <= broadcast group MTU, make sure MTU is valid
when switching back from connected mode.
Signed-off-by: Michael S. Tsirkin <[EMAIL PROTECTED]>
---
Incremental patch on top of the IPoIB CM.
Pls apply in for-mm.
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index bb6a9b1..43500fd 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -1127,6 +1127,7 @@ static ssize_t set_mode(struct class_device *cdev,
if (!strcmp(buf, "datagram\n")) {
clear_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
+ dev->mtu = min(priv->mcast_mtu, dev->mtu);
ipoib_flush_paths(dev);
return count;
}
--
MST
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