IPoIB: Add send gather support

[safe/jmp/linux-2.6] / drivers / infiniband / ulp / ipoib / ipoib_verbs.c

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
index 563aeac..a3aeb91 100644 (file)
--- a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
@@ -157,6 +157,7 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
        };
 
        int ret, size;
+       int i;
 
        priv->pd = ib_alloc_pd(priv->ca);
        if (IS_ERR(priv->pd)) {
@@ -172,8 +173,12 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
 
        size = ipoib_sendq_size + ipoib_recvq_size + 1;
        ret = ipoib_cm_dev_init(dev);
-       if (!ret)
-               size += ipoib_recvq_size + 1 /* 1 extra for rx_drain_qp */;
+       if (!ret) {
+               if (ipoib_cm_has_srq(dev))
+                       size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */
+               else
+                       size += ipoib_recvq_size * ipoib_max_conn_qp;
+       }
 
        priv->cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev, size, 0);
        if (IS_ERR(priv->cq)) {
@@ -185,7 +190,10 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
                goto out_free_cq;
 
        init_attr.send_cq = priv->cq;
-       init_attr.recv_cq = priv->cq,
+       init_attr.recv_cq = priv->cq;
+
+       if (dev->features & NETIF_F_SG)
+               init_attr.cap.max_send_sge = MAX_SKB_FRAGS + 1;
 
        priv->qp = ib_create_qp(priv->pd, &init_attr);
        if (IS_ERR(priv->qp)) {
@@ -197,12 +205,12 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
        priv->dev->dev_addr[2] = (priv->qp->qp_num >>  8) & 0xff;
        priv->dev->dev_addr[3] = (priv->qp->qp_num      ) & 0xff;
 
-       priv->tx_sge.lkey       = priv->mr->lkey;
+       for (i = 0; i < MAX_SKB_FRAGS + 1; ++i)
+               priv->tx_sge[i].lkey = priv->mr->lkey;
 
-       priv->tx_wr.opcode      = IB_WR_SEND;
-       priv->tx_wr.sg_list     = &priv->tx_sge;
-       priv->tx_wr.num_sge     = 1;
-       priv->tx_wr.send_flags  = IB_SEND_SIGNALED;
+       priv->tx_wr.opcode      = IB_WR_SEND;
+       priv->tx_wr.sg_list     = priv->tx_sge;
+       priv->tx_wr.send_flags  = IB_SEND_SIGNALED;
 
        return 0;