Merge to Fedora kernel-2.6.18-1.2224_FC5 patched with stable patch-2.6.18.1-vs2.0...

[linux-2.6.git] / drivers / infiniband / hw / ipath / ipath_ud.c

diff --git a/drivers/infiniband/hw/ipath/ipath_ud.c b/drivers/infiniband/hw/ipath/ipath_ud.c
index e606daf..3466129 100644 (file)
--- a/drivers/infiniband/hw/ipath/ipath_ud.c
+++ b/drivers/infiniband/hw/ipath/ipath_ud.c
@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2006 QLogic, Inc. All rights reserved.
  * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
  *
  * This software is available to you under a choice of one of two
@@ -33,7 +34,7 @@
 #include <rdma/ib_smi.h>
 
 #include "ipath_verbs.h"
-#include "ips_common.h"
+#include "ipath_common.h"
 
 /**
  * ipath_ud_loopback - handle send on loopback QPs
@@ -274,6 +275,11 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr)
                len += wr->sg_list[i].length;
                ss.num_sge++;
        }
+       /* Check for invalid packet size. */
+       if (len > ipath_layer_get_ibmtu(dev->dd)) {
+               ret = -EINVAL;
+               goto bail;
+       }
        extra_bytes = (4 - len) & 3;
        nwords = (len + extra_bytes) >> 2;
 
@@ -283,8 +289,8 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr)
                ret = -EINVAL;
                goto bail;
        }
-       if (ah_attr->dlid >= IPS_MULTICAST_LID_BASE) {
-               if (ah_attr->dlid != IPS_PERMISSIVE_LID)
+       if (ah_attr->dlid >= IPATH_MULTICAST_LID_BASE) {
+               if (ah_attr->dlid != IPATH_PERMISSIVE_LID)
                        dev->n_multicast_xmit++;
                else
                        dev->n_unicast_xmit++;
@@ -304,7 +310,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr)
        if (ah_attr->ah_flags & IB_AH_GRH) {
                /* Header size in 32-bit words. */
                hwords = 17;
-               lrh0 = IPS_LRH_GRH;
+               lrh0 = IPATH_LRH_GRH;
                ohdr = &qp->s_hdr.u.l.oth;
                qp->s_hdr.u.l.grh.version_tclass_flow =
                        cpu_to_be32((6 << 28) |
@@ -330,7 +336,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr)
        } else {
                /* Header size in 32-bit words. */
                hwords = 7;
-               lrh0 = IPS_LRH_BTH;
+               lrh0 = IPATH_LRH_BTH;
                ohdr = &qp->s_hdr.u.oth;
        }
        if (wr->opcode == IB_WR_SEND_WITH_IMM) {
@@ -361,18 +367,18 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr)
        if (wr->send_flags & IB_SEND_SOLICITED)
                bth0 |= 1 << 23;
        bth0 |= extra_bytes << 20;
-       bth0 |= qp->ibqp.qp_type == IB_QPT_SMI ? IPS_DEFAULT_P_KEY :
+       bth0 |= qp->ibqp.qp_type == IB_QPT_SMI ? IPATH_DEFAULT_P_KEY :
                ipath_layer_get_pkey(dev->dd, qp->s_pkey_index);
        ohdr->bth[0] = cpu_to_be32(bth0);
        /*
         * Use the multicast QP if the destination LID is a multicast LID.
         */
-       ohdr->bth[1] = ah_attr->dlid >= IPS_MULTICAST_LID_BASE &&
-               ah_attr->dlid != IPS_PERMISSIVE_LID ?
-               __constant_cpu_to_be32(IPS_MULTICAST_QPN) :
+       ohdr->bth[1] = ah_attr->dlid >= IPATH_MULTICAST_LID_BASE &&
+               ah_attr->dlid != IPATH_PERMISSIVE_LID ?
+               __constant_cpu_to_be32(IPATH_MULTICAST_QPN) :
                cpu_to_be32(wr->wr.ud.remote_qpn);
        /* XXX Could lose a PSN count but not worth locking */
-       ohdr->bth[2] = cpu_to_be32(qp->s_next_psn++ & IPS_PSN_MASK);
+       ohdr->bth[2] = cpu_to_be32(qp->s_next_psn++ & IPATH_PSN_MASK);
        /*
         * Qkeys with the high order bit set mean use the
         * qkey from the QP context instead of the WR (see 10.2.5).
@@ -463,7 +469,7 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
                        src_qp = be32_to_cpu(ohdr->u.ud.deth[1]);
                }
        }
-       src_qp &= IPS_QPN_MASK;
+       src_qp &= IPATH_QPN_MASK;
 
        /*
         * Check that the permissive LID is only used on QP0
@@ -554,7 +560,16 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
        spin_lock_irqsave(&rq->lock, flags);
        if (rq->tail == rq->head) {
                spin_unlock_irqrestore(&rq->lock, flags);
-               dev->n_pkt_drops++;
+               /*
+                * Count VL15 packets dropped due to no receive buffer.
+                * Otherwise, count them as buffer overruns since usually,
+                * the HW will be able to receive packets even if there are
+                * no QPs with posted receive buffers.
+                */
+               if (qp->ibqp.qp_num == 0)
+                       dev->n_vl15_dropped++;
+               else
+                       dev->rcv_errors++;
                goto bail;
        }
        /* Silently drop packets which are too big. */
@@ -612,7 +627,7 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
        /*
         * Save the LMC lower bits if the destination LID is a unicast LID.
         */
-       wc.dlid_path_bits = dlid >= IPS_MULTICAST_LID_BASE ? 0 :
+       wc.dlid_path_bits = dlid >= IPATH_MULTICAST_LID_BASE ? 0 :
                dlid & ((1 << (dev->mkeyprot_resv_lmc & 7)) - 1);
        /* Signal completion event if the solicited bit is set. */
        ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc,