IPoIB/cm: Factor out ipoib_cm_create_srq()

Factor out the code to create an SRQ and allocate the receive ring in
ipoib_cm_dev_init() into a new function ipoib_cm_create_srq().  This
will make the code neater when support for devices that don't implement
SRQs is added.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 30 insertions, 17 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index 388f0413fcb..9edc9fc9621 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -1271,7 +1271,7 @@ int ipoib_cm_add_mode_attr(struct net_device *dev)
         return device_create_file(&dev->dev, &dev_attr_mode);
 }
 
-int ipoib_cm_dev_init(struct net_device *dev)
+static int ipoib_cm_create_srq(struct net_device *dev)
 {
         struct ipoib_dev_priv *priv = netdev_priv(dev);
         struct ib_srq_init_attr srq_init_attr = {
@@ -1280,6 +1280,31 @@ int ipoib_cm_dev_init(struct net_device *dev)
                         .max_sge = IPOIB_CM_RX_SG
                 }
         };
+        int ret;
+
+        priv->cm.srq = ib_create_srq(priv->pd, &srq_init_attr);
+        if (IS_ERR(priv->cm.srq)) {
+                ret = PTR_ERR(priv->cm.srq);
+                priv->cm.srq = NULL;
+                return ret;
+        }
+
+        priv->cm.srq_ring = kzalloc(ipoib_recvq_size * sizeof *priv->cm.srq_ring,
+                                    GFP_KERNEL);
+        if (!priv->cm.srq_ring) {
+                printk(KERN_WARNING "%s: failed to allocate CM ring (%d entries)\n",
+                       priv->ca->name, ipoib_recvq_size);
+                ib_destroy_srq(priv->cm.srq);
+                priv->cm.srq = NULL;
+                return -ENOMEM;
+        }
+
+        return 0;
+}
+
+int ipoib_cm_dev_init(struct net_device *dev)
+{
+        struct ipoib_dev_priv *priv = netdev_priv(dev);
         int ret, i;
 
         INIT_LIST_HEAD(&priv->cm.passive_ids);
@@ -1297,22 +1322,6 @@ int ipoib_cm_dev_init(struct net_device *dev)
 
         skb_queue_head_init(&priv->cm.skb_queue);
 
-        priv->cm.srq = ib_create_srq(priv->pd, &srq_init_attr);
-        if (IS_ERR(priv->cm.srq)) {
-                ret = PTR_ERR(priv->cm.srq);
-                priv->cm.srq = NULL;
-                return ret;
-        }
-
-        priv->cm.srq_ring = kzalloc(ipoib_recvq_size * sizeof *priv->cm.srq_ring,
-                                    GFP_KERNEL);
-        if (!priv->cm.srq_ring) {
-                printk(KERN_WARNING "%s: failed to allocate CM ring (%d entries)\n",
-                       priv->ca->name, ipoib_recvq_size);
-                ipoib_cm_dev_cleanup(dev);
-                return -ENOMEM;
-        }
-
         for (i = 0; i < IPOIB_CM_RX_SG; ++i)
                 priv->cm.rx_sge[i].lkey = priv->mr->lkey;
 
@@ -1323,6 +1332,10 @@ int ipoib_cm_dev_init(struct net_device *dev)
         priv->cm.rx_wr.sg_list = priv->cm.rx_sge;
         priv->cm.rx_wr.num_sge = IPOIB_CM_RX_SG;
 
+        ret = ipoib_cm_create_srq(dev);
+        if (ret)
+                return ret;
+
         for (i = 0; i < ipoib_recvq_size; ++i) {
                 if (!ipoib_cm_alloc_rx_skb(dev, i, IPOIB_CM_RX_SG - 1,
                                            priv->cm.srq_ring[i].mapping)) {